• 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:
    The invention relates to a cheese mold (1) comprising at least one piece (10) of thermoplastic material, the piece having two opposite parallel main faces, called the inner face (11) and outer face (12) respectively, and comprising a multiplicity of through perforations (2) according to the thickness of the part from one face to the other, characterized in that each perforation (2) is in two parts of distinct geometry, a first part (3) forming a cavity of imprint opening onto the inner face (11), and a second part (4) of longitudinal shape constituting a through duct which communicates at the inlet centrally with said cavity and opens at the outlet on the outer face (12).
    公开号:CH716752A2
    申请号:CH01356/20
    申请日:2020-10-22
    公开日:2021-04-30
    发明作者:Bidault Pascal
    申请人:Servi Doryl；
    IPC主号:
    专利说明:

    The invention relates to a cheese mold, made of thermoplastic material, and the method of manufacturing such a mold, in particular for hard cheese.
    In the remainder of the description, “mold” is understood to mean the whole of the mold intended to contain the cheese and the part used for pressing (the foncet), or at least one part of the mold.
    Pressed cheese molds are provided, over their entire surface, with a multitude of micro-perforations allowing the whey to be removed during molding and pressing.
    A known method of manufacturing a perforated plastic mold consists in providing a solid plastic part, and subsequently making through perforations according to the thickness of the wall, via mechanical means of the needle or nail type .
    [0005] Furthermore, for certain types of cheese, such as Comté, the surface of the mold must be designed to provide on the external face (future rind) of the cheese a frame having alternating reliefs / bosses distributed regularly. This frame results from the imprint left by the wall of the mold which has on its interior face regularly distributed, hollow shapes over a certain thickness / depth of the wall, in order to form said reliefs on the exterior face of the cheese.
    However, when it comes to designing a mold having an imprint formed by a multitude of hollows, and both through perforations in the entire thickness, the process consists in making a plastic part with hollows on its inner face which were obtained during plastic injection molding or else subsequently by stamping, then in mechanically perforating the plastic part using needles. However, the mechanical perforation certainly provides a regular perforation over the whole of the part, but it is carried out in a second step after the marking of the hollows, which leads to a random distribution of the perforations with respect to said hollows. Some hollows are not perforated and the dimensions of the perforations are irregular. In the end, the whey may not be evacuated homogeneously and optimally.
    [0007] The aim of the invention is therefore to alleviate the aforementioned drawbacks by proposing a new mold and its manufacturing process, the mold being designed to have an imprint formed by a multitude of hollows while making it possible to ensure optimal evacuation. whey.
    [0008] According to the invention, the cheese mold comprises at least one piece of thermoplastic material (one face of which is intended to serve as a molding surface for the cheese), the piece having two opposite main parallel faces, respectively called the inner face and outer face, and comprising a multiplicity of through perforations according to the thickness of the part from one face to the other, characterized in that each perforation is in two parts of distinct geometry, a first part forming a cavity (as a function of (imprint after molding of the cheese) opening onto the inner face, and a second portion of longitudinal shape constituting a through duct which communicates at the inlet centrally with said cavity, and opens at the outlet on the outer face.
    The cavity of each perforation constitutes an imprint in the mold to form a relief on the surface of the cheese during and after use of the mold. The through duct constitutes a means of evacuating the whey outside the mold when the mold is in use, the whey first flowing through the cavity.
    [0010] Thus, the perforations of the mold of the invention provide both an imprint intended for the frame to be drawn on the cheese, and means for evacuating the whey. In addition, the through duct, being systematically arranged as an extension of the cavity, and centrally with respect to said cavity, allows homogeneous evacuation of the whey.
    [0011] According to one characteristic, the mold or the part of the mold has its inner face which is solid (smooth surface with no difference in level) in the zones separating the perforations (and therefore in the zones separating the impression cavities). Thus, the part on its inner face is devoid of any other hollow shape apart from the perforations (and therefore cavities). The whey will only be able to escape through the impression cavities without following other paths, which will provide a perfectly homogeneous rind on the cheese.
    [0012] According to another characteristic, the cavity of each perforation has, in a plane parallel to the faces, a section which is greater than the section of the through duct, at the level of the interior face of the part.
    According to another characteristic, the cavity of each perforation has a profile with an angular break, preferably curved.
    Preferably, the cavity of each perforation has a cylindrical peripheral wall extending substantially perpendicular to the inner face, and preferably of circular base, and a bottom wall forming an angular rupture, preferably curved, with the wall peripheral, the bottom wall joining the through evacuation duct. The cylindrical section of the peripheral wall of the cavity may have a circular base or the like.
    Preferably, the cavity of each perforation has a bottom wall which joins the through duct (the entrance to said duct), this bottom wall having a concave edge (the concavity of which is turned towards the cavity). This concavity promotes the evacuation of the whey into the duct.
    In a preferred embodiment, the duct of each perforation is cylindrical (that is to say of identical section over the entire length), preferably circular.
    The perforations can be distributed evenly over the part.
    [0018] According to yet another characteristic, the cavity and the duct of each perforation result from a single forming operation (in particular drilling) during the manufacture of the part of the mold using a single tool. perforation mechanics.
    The invention also relates to a method of manufacturing the aforementioned mold of the invention, comprising a step of manufacturing a solid part of thermoplastic material (according to a full thickness and with flat and solid outer and inner surfaces without recesses blinds and / or through perforations), and a step of drilling through the thickness of the part via drilling means, characterized in that the drilling of each perforation is carried out from the inner face, that is to say say from the surface intended to constitute the molding surface of the cheese, and with the aid of a unitary drilling tool which produces the through duct and the cavity (with imprint function) immediately following.
    Preferably, it is the unitary drilling tool for each perforation which is movable relative to the part, between an initial position and an end-of-travel position. The unitary drilling tool for each perforation is mobile, and the cavity (with imprint function) is produced when the tool reaches its end of stroke. The movement of the tool is dynamic throughout its stroke without static maintenance in compression of the tool at the end of the stroke (as during stamping).
    [0021] According to one characteristic, the unitary drilling tool for each perforation has an end which corresponds to the last re-entrant part of the tool in the thickness of the part when the tool is at the end of its travel, this end having a geometry of male shape corresponding to the female geometry of the cavity.
    The method may include a step of heating the part prior to drilling, at least at its inner face, by heating means. This heating step can be implemented depending on the plastic material used and its thickness.
    Advantageously, the drilling means comprise a multiplicity of unitary drilling tools which are capable of drilling (concomitantly or not) the part in order to produce the multiplicity of perforations.
    The present invention is now described with the aid of examples which are only illustrative and in no way limitative of the scope of the invention, and from the accompanying illustrations, in which:
    [0025] [fig. 1] or Figure 1 shows a perspective view from above of a part of a cheese mold according to the invention.
    [0026] [Fig.2] or Figure 2 shows a sectional view of the part of Figure 1 according to the thickness;
    [0027] [Fig.3] or Figure 3 schematically illustrates the steps according to the invention of the mold manufacturing process, with sectional views of an exemplary embodiment of the implementation device.
    [0028] [Fig.4] or Figure 4 is a schematic view of an example of a unitary tool for making a perforation according to the invention.
    The mold 1 of the invention illustrated in Figure 1 is intended for molding cheese, in particular hard cheese, such as Comté. The mold 1 comprises at least one piece 10 of thermoplastic material, here in the form of a plate, which has two opposite main faces 11 and 12, called the inner face and the outer face, respectively, and a peripheral edge 13 of thickness e.
    The part 10 comprises a multiplicity of through perforations 2 which extend from the inner face 11 to the outer face 12. The perforations 2 are in the example illustrated distributed evenly over the entire surface of the mold. Depending on the pattern to be drawn on the surface of the cheese, the perforations may be unevenly distributed.
    According to the invention, each perforation 2 comprises two parts 3 and 4 of distinct geometry.
    In the embodiment illustrated in Figure 1, the rest of the inner face 11, that is to say between the perforation zones 2, is full and devoid of any other marking, recess or the like; the surface between the perforations is smooth.
    The second part 4 is arranged as an extension of the first part 3, centrally.
    The first part 3 of each perforation 2 has a top view of a section larger than the section of the second part 4 (Figures 1 and 2). Likewise, the inner end of the first part 3 (referred to below as the bottom 32), at the limit of the second part 4, has a section that is larger than the section of the second part 4.
    The first part 3 forms a cavity whose function is to obtain an imprint on the outer surface of the cheese once it has been molded. The cavity 3 extends in depth over a limited thickness e1 of the part. The second part 4 forms a longitudinal duct / well which communicates with the cavity 3 and opens onto the outer face 12 of the mold. The cavity 3 is reduced in depth, while the duct 4 extends longitudinally and oblong.
    Each so-called cavity 3 cavity is intended to be a molding / marking element for the cheese rind. The set of cavities 3 of the perforations 2 constitutes a negative impression which is intended to draw a frame provided with a multiplicity of reliefs, on the external surface of the cheese which will be molded and pressed against said internal face 11 of the mold.
    The set of conduits 4 constitutes means for discharging the whey to the outside of the mold.
    According to the invention, the presence of an evacuation duct 4 systematically extending and in the center of each molding / marking cavity 3 guarantees a homogeneous and optimal evacuation of the whey, which will provide a cheese with a rind particularly homogeneous.
    Each cavity 3 has an inlet 30 coplanar with the inner face 11 of the part of the mold, a peripheral wall 31 preferably cylindrical, and a bottom wall 32 provided with a discharge orifice 33 communicating directly with the duct 4, in particular constituting the entrance to duct 4.
    The cavity 3 is preferably cylindrical with a circular section.
    The bottom wall 32 preferably has with the peripheral wall 31, a concave edge 34, this concavity ending at the discharge orifice 33.
    The cavity 3 has a curved profile as shown here, or else a broken line profile. Thus the peripheral wall 31 is not continuous straight up to the discharge orifice 33 but presents an angular rupture (here curved) to be extended by the bottom wall 32. The peripheral wall 31 extends in the direction of the thickness of the part 10, that is to say perpendicular or substantially perpendicular to the inner face 11. The bottom wall 32 is inclined converging towards the discharge orifice 33 and / or (substantially) parallel with respect to the inner face 11. The internal angle α of inclination between the peripheral wall 31 and the bottom wall 32 forms an obtuse angle.
    The geometry of each cavity 3, in size and shape, is adapted to the geometry of the reliefs to be obtained on the surface of the cheese. In the example shown, each recess has a circular shape in top view and is of cylindrical section with a bottom with a concave edge to provide a round and convex relief. In addition, the concavity of the edge 34 up to the discharge orifice 33 promotes the discharge of the whey into the duct 4.
    According to the invention, the discharge orifice 33 of the cavity 3 is arranged in the center of the bottom wall 32. The conduit 4 of each perforation 2 is therefore arranged centrally with respect to the bottom wall 32 of each cavity 3.
    Each discharge duct 4 is preferably cylindrical with a circular section.
    By way of example only illustrative and in no way limiting, the dimensions of each perforation 2 are as follows:width (here diameter) of each cavity 3 along a plane parallel to the inner face 11: of the order of 1 to 2 mm;width (here diameter) of each duct 4 along a plane parallel to the inner face 11: of the order of 0.2 to 0.7 mm;depth / thickness e1 of each cavity 3: of the order of 0.5 to 3 mm, in particular 1 mm;length of each duct 4: corresponds to the rest of the thickness of the part 10, for example between 4 mm and 10 mm.
    The invention also relates to the method of manufacturing a mold 1 of the invention.
    With reference to Figure 3, the manufacturing process comprises the following steps: a) Step a: production of a solid part 10, in particular of a plate, of thermoplastic material, such as by injection molding, or extrusion, or by pressing, the part being full without the presence of blind recesses or through perforations; b) Step b: optionally heating the part 10 by heating means 5, facing the interior face 11 or the two opposite faces, interior 11 and exterior 12. This step is optional, depending on the nature of the material and of the thickness of the part 10; c) Step c: placing the part 10 opposite the drilling means 6 provided with a multiplicity of unitary drilling tools 60; d) Step d: drilling in the thickness of the part 10 from a single face, the inner face 11, the drilling of each perforation 2 being done using a single tool 60 producing for each perforation the combination of a duct 4 and the associated cavity 3. The unitary tools 60 are, in the implementation device illustrated schematically in FIG. 3, integral with a movable plate 61. As a variant, the unitary tools 60 can be independent of each other. others. The cavity 3 of each perforation is obtained at the end of travel of the plate. The drilling tool is always in a dynamic position, and does not need to be placed in a static compression position at the end of the stroke. e) Step e: removal of the drilling means, the part is finished.
    When a heating step is implemented, the heating of the piece of thermoplastic material is adapted to facilitate drilling through the entire thickness of the piece, and allow forming of the cavities, and this in a clean and flawless.
    The installation for implementing the method therefore comprises the heating means 5 which are optional, and the drilling / forming means 6.
    Preferably, the heating means 5 are arranged at a distance and opposite each of the inner 11 and outer 12 faces of the part 10. The heating means 5 are for example heating resistors. The part 10 can be movable in translation between the top and bottom heating means 5 to optimize the heating time. The distance between the part and the heating means, possibly the speed of advance of the part relative to said heating means, and the heating power of the heating means will be adapted according to the temperature to be reached at the surface of the part. .
    The temperature to be reached at the surface of the faces 11 and 12 of the part 10 will also depend on the nature of the thermoplastic material, and on the thickness of the part. A temperature is for example of the order of 50 ° C. for PP (polypropylene).
    The drilling / forming means 6 comprise a multiplicity of unit tools 60 which are able to be introduced into the thickness of the part. In the example illustrated, the unitary tools 60 are introduced concomitantly into the thickness of the part. The unitary tools 60 are for example integral with the movable plate 61 and distributed in number and in spacing according to the destination of the mold / according to the nature of the cheese to be molded and pressed.
    In a preferred embodiment, each unitary tool 60 is in the form of a needle (FIG. 4), which comprises a point 62 suitable for drilling, a cylindrical body 63 for drawing the conduit 4, and a termination 64 of geometry appropriate to the geometry of a cavity 3 to be formed.
    The shape of each needle 60 is adapted to the geometries of the duct 4 and of the cavity 3 of each perforation 2.
    The needle 60 is inserted from the inner face 11 and beyond the outer face 12, the termination 63 being inserted to the desired depth to correspond to the thickness e1 of the cavity 3.
    The part 10 of a mold once manufactured according to the method of the invention can constitute a base or a pressing foncet of a mold. It will have an outline of geometry adapted to the shape of the cheese, for example circular for the county. The disc geometry is for example obtained by circular cutting of a parallelepipedal plate which has been drilled beforehand according to the method of the invention, or else obtained directly during the manufacture of the solid thermoplastic part.
    The part 10 can constitute a ferrule of a mold. It is in the form of a solid parallelepipedal plate / strip which is then drilled according to the method of the invention, and finally wound up and heat-welded at its two ends. The shell will then be heat-welded to a mold base.
    Consequently, the method of manufacturing the mold of the invention provides by drilling from a single face of the part 10 and with a single tool for each perforation 2, a drilling and at the same time a forming in two distinct geometries for constitute the combination of the through longitudinal duct 4 and of the impression cavity 3. The method of the invention guarantees the manufacture of a mold according to the invention, which comprises the arrangement of a duct for evacuating the whey systematically facing / extending from each impression cavity and in a centralized manner, thus generating a homogeneous evacuation of the whey.
    权利要求:
    Claims (11)
    [1]
    1. Cheese mold (1) comprising at least one piece (10) of thermoplastic material, the piece having two opposite parallel main faces, called the inner face (11) and outer face (12) respectively, and comprising a multiplicity of through perforations (2) according to the thickness of the part from one face to the other, characterized in that each perforation (2) is in two parts of distinct geometry, a first part (3) forming a cavity opening onto the inner face (11), and a second portion (4) of longitudinal shape constituting a through duct which communicates at the inlet centrally with said cavity, and opens at the outlet on the outer face (12).
    [2]
    2. Mold according to claim 1, characterized in that the cavity (3) of each perforation (2) has in a plane parallel to the faces, a section which is greater than the section of the through duct (4), at the level of the inner face (11) of the part.
    [3]
    3. Mold according to any one of the preceding claims, characterized in that the cavity (3) of each perforation (2) has a peripheral wall (31) cylindrical extending substantially perpendicular to the inner face (11), and of preferably circular base, and a bottom wall (32) forming an angular break, preferably curved, with the peripheral wall (31), the bottom wall (32) joining the through duct (4).
    [4]
    4. Mold according to any one of the preceding claims, characterized in that the cavity (3) of each perforation (2) has a bottom wall (32) which joins the through duct (4), this bottom wall being at concave edge (34).
    [5]
    5. Mold according to any one of the preceding claims, characterized in that the perforations (2) are distributed regularly over the part.
    [6]
    6. Mold according to any one of the preceding claims, characterized in that the cavity (3) and the duct (4) of each perforation (2) result from a single forming operation during the manufacture of the part of the mold using a single mechanical punching tool.
    [7]
    7. A method of manufacturing a mold (1) according to any one of the preceding claims, comprising a step of manufacturing a part (10) full of thermoplastic material and a step of drilling through the thickness of the part. via piercing means, characterized in that the piercing of each perforation is carried out from the inner face (11), that is to say from the surface intended to constitute the molding surface of the cheese, and at the using a unitary drilling tool (60) which makes the through duct (4) and the cavity (3) immediately following.
    [8]
    8. A method of manufacturing a mold according to the preceding claim, characterized in that the unitary drilling tool (60) for each perforation (2) is movable between an initial position and an end-of-travel position, and the cavity (3) is carried out when the tool (60) reaches its end of stroke.
    [9]
    9. A method of manufacturing a mold according to the preceding claim, characterized in that the unitary drilling tool (60) for each perforation (2) has an end (64) which corresponds to the last re-entrant part of the tool. in the thickness of the part when the tool is at the end of its stroke, this termination having a geometry of male form corresponding to the female geometry of the cavity (3).
    [10]
    10. A method of manufacturing a mold according to any one of claims 7 to 9, characterized in that the drilling means (6) comprise a multiplicity of single drilling tools (60) which are suitable for drilling the part. (10) to achieve the multiplicity of perforations (2).
    [11]
    11. A method of manufacturing a mold according to any one of claims 7 to 10, characterized in that it comprises a step of heating the part prior to drilling, at least at its inner face (11). , by heating means (5).
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    同族专利:
    公开号 | 公开日
    FR3102338A1|2021-04-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE3134607A1|1981-08-12|1983-03-03|Milchtechnik AG, 9000 St. Gallen|Device for producing cheese|
    NL8801381A|1988-05-30|1989-12-18|Arend Bv|CHEESE FORM.|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR1911916A|FR3102338A1|2019-10-24|2019-10-24|Cheese mold, in particular for cheese of the county type, and method of making such a mold|
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