• 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 an automatic sheeter (10), comprising: a bearing structure (11), two opposite lamination conveyors (12, 13) arranged aligned along the same lamination direction (X), configured to alternately drag and support a sheet of dough being processed, a central rolling group (14), comprising in turn: a small frame (15) with an opening (15a) for the introduction of a dough to be laminated, a pair of facing rolling rollers, means ( 18) for the variation of the center distance between the lamination rollers, means for the motorization of at least one of the lamination rollers, means for the motorization of the lamination conveyors (12, 13). The means for the motorization of the lamination conveyors (12, 13) comprise: first motor means configured for the actuation of a first lamination conveyor (12), second motor means configured for the actuation of the second lamination conveyor (13) , coordination means (23) configured to coordinate the operation of the first motor means and of the second motor means
    公开号:CH717354A2
    申请号:CH00290/21
    申请日:2021-03-18
    公开日:2021-10-29
    发明作者:Lobbia Corrado；Baron Andrea
    申请人:Rollmatic S R L；
    IPC主号:
    专利说明:

    [0001] The invention relates to an automatic dough sheeter.
    [0002] Motorized dough sheeters, of the automatic or semi-automatic type, are nowadays known and increasingly widespread in the food sector.
    [0003] In general, automatic dough sheeters are configured for the lamination processing of any type of pasta, such as puff pastry, pizza dough, fresh pasta, sugar paste, pastry dough and other similar pasta.
    [0004] A sheeter is configured to create sheets of a dough of the desired thickness, starting from a predefined dough introduced from the top.
    [0005] Generally an automatic dough sheeter comprises:a supporting structure,two opposite rolling conveyors arranged aligned along the same direction, configured to alternately drag and support a sheet of dough being processed,a central rolling unit, comprising in turn a hopper for introducing a dough to be rolled and a pair of facing rolling rollers, means for varying the distance between the axes between said rolling rollers, means for the motorization of at least one of said laminating rollers,motorization means for the rolling conveyors.
    [0006] Normally the rolling conveyors are of the belt type, and therefore each comprise a fixed frame, two end cylinders and a conveyor belt which extends between the two end cylinders and surrounds them defining a closed annular belt.
    [0007] These automatic dough sheeters are particularly used in small pasta factories, agritourisms, delicatessens and restaurants, where it replaces manual systems to produce large quantities of pasta sheets, which are then useful for producing tagliatelle or for feeding machines for ravioli, cappelletti and agnolotti, or in pastry shops for the production of pastry sheets.
    [0008] Currently known automatic sheeters generally provide for the presence of an electric motor for the rotation and movement of the lamination rollers, and of another electric motor dedicated to the coordinated actuation of the two belt conveyors.
    [0009] This single electric motor acts simultaneously, by means of corresponding reduction gears and transmission chains, on the drive rollers of both belt conveyors.
    [0010] The operation of the automatic sheeter machines provides that the lamination rollers and the belt conveyors operate alternately in a first direction and in a second opposite direction. Thus a dough to be laminated:in a first phase it receives a first squeezing, with a first reduction in thickness, by the lamination rollers, and the same dough squeezed a first time is simultaneously translated on a first belt conveyor in a first direction of a movement direction,in a subsequent second phase, the motion of the belt conveyors and the lamination rollers is reversed; in this way the semi-finished dough receives a second squeezing, with a second reduction in thickness, by the rolling rollers, and the same dough squeezed a second time, is simultaneously translated from one belt conveyor to the other, so that the entire semi-finished dough passes between the lamination rollers again.
    [0011] These two phases are repeated until the dough is reduced to a desired thickness.
    [0012] Said automatic sheeters of known type, although widespread and appreciated, have an important limitation consisting in the fact that the speed ratio between the belt conveyors is constant.
    [0013] When the sheet of dough being processed passes between the laminating rollers to be crushed, it temporarily comprises a first part, upstream of the laminating rollers, having a greater thickness, and a second part, downstream of the laminating rolls, having a smaller thickness.
    [0014] The second part, having a smaller thickness, comes out of the lamination with a greater width and also with a greater length.
    [0015] To date, to prevent creases or wrinkles from forming on the downstream sheet of dough, since the speeds of the belt conveyors are the same, the rolling steps that a dough undergoes are carried out with successive, modest and consequently they are very numerous, precisely to avoid that the second part of a sheet being processed is too elongated, a situation that would determine, at the same speed of the two belt conveyors, the formation on it of folds, wrinkles or wrinkles, undesirable events that could compromise the quality of the final product.
    [0016] The aim of the present invention is to provide a motorized dough sheeter capable of overcoming the aforementioned drawbacks and limitations of the known art.
    [0017] In particular, an object of the invention is to develop a motorized sheeter capable of operating more rapidly while ensuring an optimal quality of the sheet of pasta at the end of the sheeting operations.
    [0018] Another object of the invention is to provide a more versatile motorized dough sheeter than the known types of dough sheeters.
    [0019] The aim and the objects mentioned above are achieved by a motorized dough sheeter according to claim 1.
    [0020] Further characteristics of the motorized dough sheeter according to claim 1 are described in the dependent claims.
    [0021] The above aim and objects, together with the advantages that will be mentioned below, are highlighted by the description of an embodiment of the invention, which is given, as an indication but not of limitation, with reference to the attached drawing tables, where is it:Figure 1 represents a perspective view of an automatic dough sheeter according to the invention;figure 1A represents a detail of figure 1;figure 2 represents another perspective view of the automatic dough sheeter of figure 1;figure 3 represents a detail of figure 2;figure 4 is a perspective section of a portion of the automatic dough sheeter according to the invention;figure 5 represents a further perspective view of the automatic dough sheeter according to the invention;figure 6 is a cross-sectional view of the laminating rollers of the automatic sheeter according to the invention;figure 7 represents a perspective view of an embodiment variant of an automatic dough sheeter according to the invention;figure 8 represents a detail of figure 7;figure 9 represents a detail of figure 5.
    [0022] With reference to the cited figures, an automatic dough sheeter according to the invention is indicated as a whole with the number 10.
    [0023] This automatic dough sheeter 10 comprises:a supporting structure11,two opposite rolling conveyors 12 and 13 arranged aligned along the same rolling direction X, configured to alternately drag and support a sheet of dough being processed,a central rolling unit 14, in turn comprising:a small castle15 with an opening15 for the introduction of a dough to be laminated; in the figures this opening is closed by a lid;a pair of facing rolling rolls 16 and 17, clearly visible in the section of figure 6,means 18 for varying the center distance between the rolling rolls 16 and 17, clearly visible in figures 5 and 6,means 19 for the motorization of at least one of the lamination rollers 16 and 17, for example of both the lamination rollers 16 and 17,means20 for the motorization of the rolling conveyors 12,13.
    [0024] The peculiarity of the invention lies in the fact that the means 20 for the motorization of the rolling conveyors 12 and 13 comprise:first motor means21 configured to drive a first rolling conveyor12,second motor means22 configured to drive the second rolling conveyor13,coordination means 23 configured to coordinate the operation of said first motor means 21 and of said second motor means 22.
    [0025] The first motor means 21 comprise a first electric motor 24. Similarly, the second motor means 22 comprise a second electric motor 25.
    [0026] In the present non-limiting embodiment of the invention, the coordination means 23 comprise:a first inverter26 connected to the first electric motor24,a second inverter27 connected to the second electric motor25,an electronic control unit28 connected to the first inverter26 and to the second inverter27.
    [0027] In a variant embodiment of the invention not illustrated for simplicity, the coordination means 23 comprise a control unit 28 configured to directly govern the first electric motor 24 and the second electric motor 25; the coordination means 23 are therefore intended to be able to operate even in the absence of inverters dedicated to the electric motors.
    [0028] The coordination means 23 are configured to coordinate the operation of said first motor means 21, of said second motor means 22 and also of the means 19 for the motorization of at least one of said rolling rolls 16 and 17.
    The coordination means 23 are configured to regulate the operation of the first motor means 21 and the second motor means 22 so that the speed of advancement of a first lamination conveyor 12o13 is greater or less than or equal to the speed of advancement of the second lamination conveyor 12o13.
    [0030] In the present embodiment, the coordination means 23 are configured to also regulate the operation of the motorization means 19 of at least one of the lamination rollers, in coordination with the operation of the first motor means 21 and of the second motor means 22.
    [0031] The electronic control unit 28 is arranged inside a lateral casing 70, and is connected to a control screen71, for example of the 'touch screen' type.
    [0032] The electronic control unit 28 is also connected to two control knobs 72 and 73, each dedicated to regulating the operating speed of a respective lamination conveyor 12 and 13. The operating mode of the lamination conveyors 12 and 13 can therefore be pre-established and governed by the electronic control unit 18, suitably programmed, or it can be determined directly by a user on the spot, according to immediate needs, by means of the control knobs 72 and 73.
    [0033] The side casing 70 is configured in such a way as to also cover and protect the motors 24 and 25 and the underlying containment compartment of the inverters 26 and 27.
    [0034] The lateral casing 70 therefore develops so as to cover an entire side of the supporting structure 11.
    [0035] The means 19 for the motorization of at least one of the lamination rolls 16 and 17 comprise a motor 31 configured to drive both the lamination rolls 16 and 17 through a transmission 32; these means are clearly visible in figure 9.
    [0036] The means 18 for varying the center distance between the rolling rolls 16 and 17 comprise a gearmotor29, visible in Figures 2 and 3, connected to a kinematic mechanism30, which kinematic mechanism30, visible in Figures 3 and 5, is configured for varying the distance of distance between the rolling rolls 16 and 17.
    [0037] In particular, the kinematic mechanism 30 is configured to move an upper rolling roll 16, movable, with respect to a lower rolling roll 17, fixed.
    [0038] In the present embodiment, obviously not limiting of the invention, the rolling conveyors 12 and 13 are of the belt type.
    [0039] Each of the rolling conveyors 12 and 13, of the belt type, comprises:a fixed frame 33 and 34 respectively,a driving roller 35 and 36 respectively, placed in proximity to the lamination rollers 16,17,an opposite deflection roller 37,38, dotted lines in figures 2 and 5,and a conveyor belt, or belt 39,40, which develops between the driving and return rollers, and surrounds them defining a closed annular belt.
    [0040] In the present embodiment of the invention, the first electric motor 24 is fixed to a first side of the supporting structure 11, in such a way as to directly drive a first drive roller 35.
    [0041] A torque reducer 24a is interposed between the first electric motor 24 and the first drive roller 35.
    [0042] The second electric motor 25 is also fixed to the first side of the supporting structure 11, in such a way as to directly drive a second drive roller 36.
    [0043] A torque reducer 25a is interposed between the second electric motor 25 and the second drive roller 36.
    [0044] The axis X1 of the first motor 24 and the rotation axis X2 of the first drive roller 35, as shown in Figure 3, are orthogonal. Similarly, the axis X3 of the second motor 25 and the rotation axis X4 of the second drive roller 36 are orthogonal.
    [0045] The motorization means 19 for at least one lamination roller 16 and 17 comprise, as clearly visible in Figures 6 and 9:the engine31,a first transmission between the motor 31 and the second lamination roller 17,a second transmission between the second laminating roller 17 and the first laminating roller 16.
    [0046] In particular, the first transmission is for example constituted by a belt transmission, comprising a first coaxial pulley41 integral with the motor shaft31, a second pulley42, coaxial and integral with the rotation shaft of the second lamination roller17, lower, and a belt 43 for the transmission of motion and torque between the two pulleys 41 and 42.
    [0047] In the figures, the second pulley 42 is only partially illustrated to allow the visibility of the components otherwise not visible.
    [0048] The second transmission comprises, again for example and not exclusively, a chain transmission, for transmitting the torque from the rotation shaft of the second laminating roller 17 to the rotation shaft of the first laminating roller 16.
    [0049] This chain transmission comprises:a first toothed wheel, not visible in the figures, coaxial to the second rolling roller 17 and fixed to the rotation shaft of the same second rolling roller 17,a second toothed wheel45, pivoted to the supporting structure11,a third toothed wheel46, coaxial to the first laminating roller 16 and fixed to the rotation shaft of the same first laminating roller 16,a chain47, positioned so as to surround the first toothed wheel and the second toothed wheel45, while the third toothed wheel46 is positioned so as to intercept and mesh with one of the two chain sections between said two first and second toothed wheels45.
    [0050] The first lamination roller 16 and the third toothed wheel 46 are carried by the means 18 for varying the distance between the centers of the lamination rollers 16 and 17.
    [0051] In particular, in the present embodiment, the kinematic mechanism 30, which is configured to move the upper rolling roller 16, comprises an articulated quadrilateral 50.
    [0052] As can be clearly seen in Figure 9, this articulated quadrilateral 50 comprises a driving bar51, a yielding bar52, and an intermediate bar53.
    [0053] The driving bar 51 is fixed for one of its ends to the motor-reducer 29 and is rotatably constrained for the opposite end to the intermediate bar53.
    [0054] The intermediate bar 53 is hinged for a first end to the moving bar 51 and at the second end to the following bar52.
    [0055] The follower bar52 is hinged for a first end thereof to one side of the supporting structure 11 and for the opposite end to the intermediate bar53.
    [0056] The kinematics30 obviously comprises two equal articulated quadrilateral 50 and 50a, symmetrically placed on each of the two opposite sides of the supporting structure 11, respectively a first articulated quadrilateral 50, posterior, visible in figure 9, and a second articulated quadrilateral 50a, anterior, visible in figures 2 and 3 The first rolling roller 16 and the third toothed wheel 46 are rotatably constrained to the two opposite transferring bars52.
    [0057] A rotation shaft 16 of the first lamination roller 16, schematized in the section of figure 6, crosses the two sides of the supporting structure 11 through two opposing symmetrical guide slots55, configured to accompany the movement of the rotation shaft 16a, and therefore of the first lamination16, when this is moved by the kinematics30.
    [0058] Thanks to this kinematic mechanism30, the operation of the motor-reducer 29 determines, by means of the articulated quadrilaterals 50 and 50a, the displacement of the first rolling roll 16 towards the second rolling roll 17, and away from it.
    [0059] The rotary motion of the first rolling roller 16 is ensured by the meshing of the third toothed wheel46 with the chain47. As mentioned above, the coordination means 23 are configured to coordinate the operation of the first motor means 21, of the second motor means 22 and also of the means 19 for the motorization of the rolling rolls 16 and 17.
    [0060] In particular, these coordination means 23 are configured to regulate the operation of the first motor means 21 and the second motor means 22 so that the speed of advancement of a first rolling conveyor 12o13 is greater or less than or equal to the speed of advancement of the second rolling conveyor 12o13.
    [0061] The electronic control unit 28 is configured to operate the inverters 26 and 27, if present, of the two electric motors 24 and 25, or directly the two electric motors 24 and 25, of the rolling conveyors 12 and 13 so that, when the two electric motors 24 and 25 are called upon to operate the conveyors 12 and 13 in the same direction A, or B, as shown in figure 4, of the same direction of advancement X, the electric motor of the upstream lamination conveyor 12o13, i.e. the conveyor on which the material being processed is located, and the electric motor of the lamination conveyor, 13o12, of downstream, i.e. the conveyor on which the material being processed is to be transferred, operate in such a way that the advancement made by the upstream rolling conveyor is slower than the advancement made by the downstream rolling conveyor. The electronic control unit 28 is configured in such a way that the difference in speed between the two rolling conveyors 12 and 13, and vice versa, is such that the material being processed which is thinned by the passage between the rolling rolls 16 and 17 is carried forward by the rolling conveyor downstream with a speed such as to prevent the formation of undulations and wrinkles on the material being processed, and obviously with a speed such as not to cause stretching or tearing on the material being processed.
    [0062] The difference in speed between the rolling conveyors 12 and 13 can be finely adjusted thanks to the adoption of two separate electric motors 24 and 25 and the corresponding inverters 26 and 27.
    [0063] The automatic sheeter 10 according to the invention is equipped with a system of photocells for detecting the presence of the product between the laminating rollers 16 and 17; for example, the automatic sheeter 10 comprises a first photocell 60, which operates as an emitting device, positioned in correspondence with a first drive roller 35, exemplified in Figures 2 and 3, and a second photocell 61, which operates as a receiver device, positioned in correspondence with the second dragging36, exemplified in Figures 4 and 9.
    [0064] A variant embodiment of the automatic dough sheeter according to the invention is represented in figures 7 and 8, and therein indicated with the number 110.
    [0065] In this variant embodiment, the first electric motor 124 is fixed in an internal compartment 180 of the bearing structure 11 and is positioned with its motor axis Y1 lying on a plane parallel to the axis Y2 of the first drive roller 35 and is connected to this first drive roller 35 by means belt or chain transmission. In particular, the Y1 axis of the first electric motor 124 is parallel to the Y2 axis of the first drive roller 35.
    [0066] A torque reducer 124a is interposed between the first electric motor 124 and the first drive roller 35.
    [0067] The second electric motor 125 is also fixed in the internal compartment 180 of the supporting structure 11 and is positioned with its motor axis Y3 lying on a plane parallel to the axis Y4 of the second driving roller 36 and is connected to this first driving roller 36 by means of belt or chain transmission. In particular, the Y3 axis of the second electric motor 125 is parallel to the Y4 axis of the second drive roller36.
    [0068] A torque reducer 125a is interposed between the second electric motor 125 and the second drive roller 36.
    [0069] This embodiment variant allows to realize an automatic sheeter 110 which is particularly compact in terms of transverse dimensions with respect to the operating direction of X.
    [0070] Figures 7 and 8 exemplify belt transmission means 181 and 182 respectively.
    [0071] In practice it has been found that the invention achieves the intended aim and objects.
    [0072] In particular, the invention has developed a motorized sheeter capable of operating more rapidly while ensuring an optimal quality of the sheet of dough at the end of the sheeting operations.
    [0073] Furthermore, with the invention a motorized dough sheeter has been developed which is more versatile than the sheeters of the known type.
    [0074] The automatic sheeter 10 and 110 according to the invention, thanks to the two electric motors coordinated by the electronic control unit, suitably programmed, is able to operate very quickly thanks to a difference between the speed of the upstream lamination conveyor and the speed of the downstream rolling conveyor, with respect to the rolling rolls, which is proportional to the crushing imposed by the latter on the material being processed.
    [0075] The difference in operating speed of the rolling conveyors is such that the elongation of the material being processed, caused by the crushing, is accompanied by the downstream conveyor without it on the material, which is progressively arranged on the downstream conveyor, wrinkles, undulations, or, conversely, strains or tears are formed.
    [0076] The invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the inventive concept; moreover, all the details can be replaced by other technically equivalent elements.
    [0077] In practice, the components and materials employed, so long as they are compatible with the specific use, as well as the contingent shapes and dimensions, may be any according to requirements and to the state of the art.
    [0078] Where the characteristics and techniques mentioned in any claim are followed by reference signs, these reference signs are to be understood as affixed for the sole purpose of increasing the intelligibility of the claims and consequently these reference signs have no limiting effect on the interpretation of each element identified by way of example by those reference signs.
    权利要求:
    Claims (10)
    [1]
    1. Automatic dough sheeter (10), comprising:- a supporting structure (11),- two opposite rolling conveyors (12, 13) arranged aligned along the same rolling direction (X), configured to alternately drag and support a sheet of dough being processed,- a central rolling unit (14), in turn comprising:- a castelletto (15) with an opening (15a) for the introduction of a dough to be laminated,- a pair of facing rolling rolls (16, 17),- means (18) for varying the center distance between said rolling rolls (16, 17),- means (19) for the motorization of at least one of said lamination rollers (16, 17),- means (20) for the motorization of said rolling conveyors (12, 13),characterized by the fact thatsaid means (20) for the motorization of said rolling conveyors (12, 13) comprise:- first motor means (21) configured for driving a first rolling conveyor (12),- second motor means (22) configured to drive the second rolling conveyor (13),- coordination means (23) configured to coordinate the operation of said first motor means (21) and of said second motor means (22).
    [2]
    2. Automatic sheeter according to claim 1, characterized in that said first motor means (21) comprise a first electric motor (24).
    [3]
    3. Automatic sheeter according to one or more of the preceding claims, characterized in that said second motor means (22) comprise a second electric motor (25).
    [4]
    4. Automatic sheeter according to one or more of the preceding claims, characterized in that said coordination means (23) comprise:- a first inverter (26) connected to said first electric motor (24),- a second inverter (27) connected to said second electric motor (25),- an electronic control unit (28) connected to said first inverter (26) and to said second inverter (27).
    [5]
    5. Automatic sheeter according to one or more of the preceding claims, characterized in that said coordination means (23) are configured to coordinate the operation of said first motor means (21), of said second motor means (22) and also of said means (19) for the motorization of at least one of said lamination rollers (16, 17).
    [6]
    6. Automatic sheeter according to one or more of the preceding claims, characterized in that said means (18) for varying the center distance between said rolling rolls (16, 17), comprise a gearmotor (29) connected to a kinematic mechanism (30 ), said kinematic mechanism (30) being configured for the variation of the center distance between said rolling rolls (16, 17).
    [7]
    7. Automatic sheeter according to claim 6, characterized in that said kinematic mechanism (30) is configured to move an upper laminating roller (16), movable, with respect to a lower laminating roller (17), fixed.
    [8]
    8. Automatic sheeter according to one or more of the preceding claims, characterized in that said means (19) for the motorization of at least one of said lamination rollers (16, 17) comprise a motor (31) configured to operate by means of a transmission (32 ) both laminating rollers (16, 17).
    [9]
    9. Automatic sheeter according to one or more of the preceding claims, characterized in that said rolling conveyors (12, 13) are of the belt type.
    [10]
    10. Automatic sheeter according to claim 9, characterized in that each of said rolling conveyors (12, 13), of the belt type, comprises:- a fixed frame (33, 34),- a drive roller (35, 36) placed in proximity to the lamination rollers (16, 17),- an opposite deflection roller (37, 38),- and a conveyor belt (39, 40), which develops between said driving and return rollers, and surrounds them defining a closed annular belt
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT202000008182|2020-04-17|
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