• 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:
    A nozzle group (20) of a carding machine comprises a suction chamber (22) and adjustment means (50) with a shutter element (52) adjustable to choke the inlet opening (22a) of the suction chamber (22) . Furthermore, a further nozzle assembly (1020) of a carding machine comprises a suction chamber (1022) and a waste element (1070) upstream of the opening (1022a) of the suction chamber, adjustable to record the rejection with a drum (101) of the carding machine.
    公开号:CH707856B1
    申请号:CH01170/14
    申请日:2013-01-29
    公开日:2017-01-13
    发明作者:Mascheretti Mario
    申请人:Marzoli Machines Textile Srl；
    IPC主号:
    专利说明:

    [0001] The object of the present invention is a suction nozzle of a carding machine of a spinning preparation line.
    [0002] In a preparation line for spinning, the fiber, for example in flakes, is first picked up from the bales, subjected to cleaning and opening operations and sent to the carding.
    [0003] Carding, as is known, is an operation of primary importance, since the fiber fed in flakes is further cleaned and parallelized, coming out in the form of a tape to be sent for subsequent processing.
    [0004] Suction nozzles and fixed knives, sometimes integrated in a single component, as illustrated for example in US 6 726 027, which operate on the fiber dragged in rotation by the drum, have the specific function of separating dirt and impurities from the fibers .
    [0005] The selection and adjustment of these components is of considerable importance, since there is the risk of operating in an overly pushed manner, with the risk of sucking even fibers that are good for production or of operating too lightly, with the risk of getting a fiber coming out of the carding too dirty and full of impurities.
    [0006] The object of the present invention is to provide a nozzle assembly for a carding machine which allows an optimal adjustment of the cleaning and separation action of the impurities.
    [0007] This object is achieved by a nozzle assembly made in accordance with claim 1 and employees.
    [0008] The characteristics and advantages of the nozzle assembly according to the present invention will be evident from the description given below, given by way of non-limiting example, in accordance with the attached figures, in which:fig. 1 <SEP> represents a drum, an inlet cylinder and an outlet cylinder of a carding machine, provided with knife-nozzle units according to the present invention, in accordance with an embodiment;fig. 2 <SEP> represents the nozzle assembly of fig. 1, in an open limit configuration;fig. 3 <SEP> represents the nozzle assembly of fig. 1, in a closing limit configuration;the fig. 4a to 4d <SEP> illustrate embodiment variants of functional groups comprising at least one nozzle assembly according to the present invention;the fig. 5a, 5b and 6 <SEP> show further variants of the nozzle assembly according to the present invention.
    [0009] According to the invention, a carding machine comprises a drum 1 rotatable about a drum axis, provided at its surface with a gasket for dragging the fiber in flakes.
    [0010] Furthermore, the carding machine comprises an introduction cylinder 2 or briseur, which can be rotated on command and is surface-coated, counter-rotating with respect to the drum 1, operatively engaged upstream with a duct for feeding a silo for feeding the flake fiber to downstream with the drum 1, to which the fiber is transferred.
    [0011] Moreover, the carding machine comprises an extraction cylinder 4 or doffer, downstream of the drum 1. The doffer 4 is surface-trimmed, rotatable on command and counter-rotating with respect to the drum, and operatively engaged with the surface thereof, to take the fiber.
    [0012] Furthermore, the carding machine comprises a device with movable caps 6, comprising a plurality of hats 8, translating along a closed path, comprising a working section parallel to the surface of the drum 1.
    [0013] With respect to the drum 1, the working portion of the device with movable caps extends between a principle line 10, defined as a straight line passing through the center of the drum and for the point of the working circumference of the drum in which the caps translators 8 disengage from the drum, and an end line 12, defined as a straight line passing through the center of the drum and for the point of the working circumference of the drum in which the translating caps 8 start engagement with the drum. The area of the side surface of the drum between the principle line and the end line is called the main carding area.
    [0014] A straight line passing through the center of the drum and the center of the briseur defines a diametric transfer line briseur-drum 14, since, at the intersection of this with the outer working surface of the drum, an area is formed which the fiber migrates from the surface of the briseur to the surface of the drum.
    [0015] The area of the drum 1 comprised between the principle line 10 and the briseur-drum transfer line 14 defines a pre-carding zone.
    [0016] A straight line passing through the center of the drum and the center of the doffer defines a diametrical transfer line drum-doffer 16, since, at the intersection of this with the outer working surface of the drum, an area is formed in which the fiber migrates from the surface of the drum to the surface of the doffer.
    [0017] The area of the drum 1 comprised between the end line 12 of the main carding zone and the transfer line drum-doffer 16 defines a post-carding zone.
    [0018] The area of the drum 1 comprised between the transfer line drum-doffer 16 and the briseur-drum transfer line 14, in the sequence now called and in the direction of rotation of the drum, forms an under-drum area.
    [0019] The carding machine further comprises a support element 19, on one side and the other of the width of the drum, for supporting the components operating on the drum.
    [0020] The carding machine further comprises at least one mouth unit 20, superimposed on the lateral surface of the drum and adapted to cooperate with the drum for cleaning the fiber dragged therefrom.
    [0021] The nozzle assembly comprises an aspiration chamber 22 open towards the lateral surface of the drum 1 through an inlet opening 22a and connected to air suction means.
    [0022] According to a preferred embodiment, the group 20 comprises a section 24, having an axial extension parallel to the oil rotation axis of the drum, which defines and delimits at least partially said suction chamber 22.
    [0023] According to a preferred embodiment, the section bar 24 is fixed, for example by means of a structure to the support element 19, so as to maintain a fixed position in operation and not adjustable.
    [0024] The mouthpiece assembly 20 further comprises knife means 30 suitable for operating on the fiber dragged by the drum to separate from this dirt and impurities.
    [0025] The knife means 30 comprise a knife 32 provided with a sharp working edge 34, projecting towards the lateral surface of the drum, suitable for processing the fiber dragged by the drum interfering mechanically with the impurities present therein, to separate them.
    [0026] The knife 32 is adjacent to the suction chamber 22 so that the impurities separated from the fiber are sucked up, and in particular it delimits at least partially the opening 22a of the suction chamber 22.
    [0027] The knife 32 is adjustable, ie the position of said knife, and in particular of the working edge 34, can be modified and fixed to adjust the projection with respect to the lateral surface of the drum.
    [0028] In particular, the knife means 30 comprise a knife support 36 suitable for integrally supporting the knife 32 through fixing means 38, for example a screw.
    [0029] The knife means comprise knife adjustment means 40 suitable for being maneuvered to modify the position of the knife 32 with respect to the lateral surface of the drum, and in particular adapted to operate on the knife support 36.
    [0030] According to a preferred embodiment, the knife 32 is radially adjustable, by means of the knife-adjusting means 40 with screws, in turn engaged with the support element 19.
    [0031] The knife support 36 is sealingly engaged with the section 24, so as to maintain a good seal in the air of the intake chamber.
    [0032] In particular, between the section 24 and the knife support 36 there is an interspace 38 necessary to allow the reciprocal movement due to the adjustment of the knife, and a seal 39 to close said interspace 38 towards the outside.
    [0033] The nozzle assembly further comprises adjustment means 50 adapted to be maneuvered to adjust the opening 22a of the suction chamber 22.
    [0034] Said adjustment means 50 comprise a shutter element 52, which at least partially delimits the opening 22a, adapted to be moved to partialize said opening 22a.
    [0035] Preferably, the shuttering element 52 can be rotated between a closing limit position, in which the opening 22a is completely closed or reduced to the minimum extension (Fig. 2), and an opening limit position, in which the opening 22a is completely open (fig. 3).
    [0036] Preferably, the shuttering element 52 is operable by an operator, for example manually, from the axial ends of the drum, for example at the support element 19.
    [0037] According to a preferred embodiment, the shutter element 52 comprises a main body 54, for example delimited by an external surface 56 at least partially cylindrical, and a protuberance 58, which extends from the main body 56, for example along a tangential direction with respect to the external surface 56.
    [0038] In particular, the protuberance 58 extends towards the knife 32, so that the movement, and in particular the rotation of the shutter element 52, determines a variation of the opening 22a.
    [0039] According to a preferred embodiment, the shutter element 52 and the knife 32 define an inlet conduit 60 converging towards the suction chamber 22.
    [0040] In particular, the protuberance 58 of the shuttering element 52 has a functional surface 62 which in the limit closing position faces the side surface of the drum and is substantially flat.
    [0041] In the limit opening position, the functional surface 62 of the shutter element 52 and the back surface 32a of the knife 32 define said inlet duct 60.
    [0042] Furthermore, the protuberance 58 has a terminal surface 64, in succession to the functional surface 62, inclined with respect to the latter.
    [0043] In the closing limit position, the end surface 64 of the throttling element 52 and the back surface 32a of the knife 32 define said inlet conduit 60.
    [0044] Moreover, preferably, the shuttering element 52 comprises a guide branch 59a, protruding from the protuberance 58 and spaced from the main body 54, with the outer surface of which forms a guiding compartment 59b.
    [0045] The adjustment means 50 comprise an adjustment support 70 which supports the shutter element 52 so as to allow its movement.
    [0046] The adjustment support 70 is fixed to the ends, for example to the support element 19, for example by means of screws, and cooperates with the section 24 to delimit the suction chamber 22.
    [0047] Preferably, the adjustment support 70 is sealedly coupled with the section 24.
    [0048] The adjustment support 70 has towards the lateral surface of the drum 1 a base surface 70a, preferably flat, spaced by a predefined quantity from the lateral surface of the drum.
    [0049] According to a preferred embodiment, the adjustment support 70 comprises a seat 72, in which the main body 54 of the shutter element 52 is rotatably inserted.
    [0050] In particular, the surface of the seat 72 cooperates with the cylindrical portion of the outer surface 56 of the main body 54, to guide it in rotation.
    [0051] Preferably, moreover, the adjustment support 70 comprises a guide 80, which preferably delimits the seat 72, at least partially, suitable for driving the throttling element 52 in movement.
    [0052] For example, the guide 80 is slidable in the guide space 59b of the shutter element 52, between the limit opening position and the closing limit position, in contact with the guide branch 59a.
    [0053] For a given position of the knife 32, adjustable by means of the knife adjustment means 40, in the limit opening position of the shutter element 52 (Fig. 2), the aperture 22a has the maximum extension and between the limit edge lower part of the throttling element 52 (in the radial direction) and the base surface 70a of the adjustment support 70, there is a maximum height difference, for example equal to 0.5 mm.
    [0054] This configuration allows a considerable suction action, an incisive separation of dirt and impurities from the fiber, also depending on the adjustment of the knife.
    [0055] Furthermore, for a given position of the knife 32, in the closing limit position of the shutter element 52 (Fig. 3), the opening 22a has the minimum extension and between the lower limit edge of the shutter element 52 ( in the radial direction) and the base surface 70a of the adjustment support 70, there is a minimum height difference, for example equal to 0.2 mm.
    [0056] In particular, in this position, the lower limit edge of the shutter element 52 is defined by the functional surface 62 of the protuberance 58.
    [0057] This configuration allows a reduced suction action and a separation of less incisive dirt and impurities, however depending on the adjustment of the knife.
    [0058] In other words, the shuttering element 52 has an external cam surface, whose rotation affects the extension of the opening 22a of the suction chamber 22 and the difference in height of the lower limit edge of said cam surface with respect to the surface base 70a of the adjustment support 70.
    [0059] According to a variant embodiment, a mouthpiece assembly 120 according to the invention comprises a knife support 136 integrated with a covering segment 82 of the drum 1, arranged downstream of said knife support 136 with respect to the rotation of the drum (Fig. 5a ).
    [0060] According to a further variant embodiment, similar to the nozzle assembly 120, a mouthpiece assembly 220 according to the invention comprises an adjustment support 270 integrated with an adjacent covering segment 82 of the drum 1, arranged upstream of said adjustment support 270 with respect to the rotation of the drum (fig. 5b).
    [0061] According to a preferred embodiment, the nozzle assembly 120, 220 is arranged side-by-side circumferentially with the movable caps 6, at the inlet (Fig. 5a) or at the outlet (Fig. 5b) of these and has an opening 90 lateral, facing towards said movable hats, suitable for aspiration of the dust raised by said hats.
    [0062] For example, said lateral opening 90 is formed between the section 24 and the knife support 136 (Figure 5a) or between the section 24 and the adjustment support 270 (Fig. 5b).
    [0063] According to a further embodiment, a nozzle unit 320 is without the knife means or provides fixed knife means, for example consisting of a sharp edge 24a of the section 24, protruding towards the lateral surface of the drum 1.
    [0064] The carding machine also comprises functional groups 80, comprising at least one mouthpiece assembly 20, 120, 220, 320 and / or at least one covering segment 82 and / or at least one carding cap 84.
    [0065] According to a variant embodiment, the functional group provides the nozzle assembly at the end of the group, ie at the exit of the fiber.
    [0066] For example, the functional group 80 comprises, according to the direction of rotation of the drum, the covering segment 82, a plurality of carding caps 84, for example in number of eight, and the nozzle group 120 with segment downstream ( fig. 4a).
    [0067] According to a further embodiment, the functional group comprises at least one nozzle assembly in an intermediate position within the functional group.
    [0068] For example, carding caps 84 are provided, variously spaced apart by knife or knife cutter units adjustable or fixed.
    [0069] For example, the functional group 80 comprises, according to the direction of rotation of the drum, the covering segment 82, a pair of carding caps 84, the mouthpiece assembly 20, four carding caps 84, the mouthpiece assembly 220 with a segment of downstream cover (fig. 4b).
    [0070] According to a further embodiment variant, the functional group provides the nozzle assembly at the beginning of the group, ie at the entrance of the fiber.
    [0071] For example, the functional group comprises, according to the rotation direction of the drum, the mouth unit 220 with upstream covering segment, a pair of carding caps 84, the mouthpiece assembly 20, a further pair of carding caps 84 and the coverage segment 82.
    [0072] According to a further embodiment variant, the functional group provides the nozzle assembly at the entrance of the group, ie at the entrance of the fiber.
    [0073] For example, the functional group 80 comprises, according to the direction of rotation of the drum, the mouth unit 220 with upstream covering segment, a plurality of carding caps 84, for example in number of six, and the covering segment 82 (fig. 4d).
    [0074] Preferably, the nozzle assembly 20, 120, 220, 320 or the functional group 80 is arranged in the pre-carding area.
    [0075] According to a further embodiment, the nozzle assembly 20, 120, 220, 320 or the functional group 80 is arranged in the post-carding area.
    [0076] According to a still further embodiment, the nozzle assembly 20, 120, 220, 320 or the functional group 80 is arranged in the sub-drum area.
    [0077] Innovatively, the nozzle assembly according to the present invention allows to improve the productivity of the carding machine, since it allows to adjust the suction action on the fiber dragged by the drum according to need and opportunity, for example according to the type of fiber or the source of the same.
    [0078] Advantageously, moreover, the nozzle assembly makes it possible to regulate the action of extracting dirt or impurities as needed, and in particular independently of the suction action.
    [0079] According to a further advantageous aspect, the nozzle assembly is adjustable in a convenient and effective manner by the operator, without disassembly of parts or components to access the adjustment members.
    [0080] It is clear that a person skilled in the art, in order to satisfy contingent needs, could make changes to the nozzle group described above.
    [0081] For example, according to a variant embodiment, the partializing element is supported so as to perform an eccentric rotation, for example by virtue of the external surface of the main cam body.
    [0082] According to a further embodiment, the knife support is adjustable by rotation or even by rotation.
    [0083] According to a further embodiment variant, the adjustment support is adjustable, for example by radial translation, by rotation or by roto-translation.
    [0084] Furthermore, an object of the present invention is not a further suction mouth of a carding machine of a spinning preparation line.
    [0085] The characteristics and advantages of the further nozzle assembly will be evident from the description given below, given as an example and not a limitation, in accordance with the attached figures, in which:fig. 7 <SEP> represents a drum, an inlet cylinder and an exit cylinder of a carding machine, provided with knife-nozzle units according to a further embodiment;fig. 8 <SEP> represents the nozzle assembly of fig. 7, in a maximum reject configuration;fig. 9 <SEP> represents the nozzle assembly of fig. 7, in a minimum waste configuration;the fig. 10a to 10d <SEP> illustrate embodiment variants of functional groups comprising at least one nozzle assembly according to the variant of fig. 7;the fig. 11a, 11b and 12 <SEP> show further embodiments of the nozzle assembly according to the variant of fig. 7
    [0086] According to a variant, a carding machine comprises a drum 101 rotatable about a drum axis, provided at its surface with a gasket for dragging the fiber in flakes.
    [0087] Furthermore, the carding machine comprises an introduction cylinder 102 or briseur, which can be rotated by command and is surface-trimmed, counter-rotating with respect to the drum 101, operatively engaged upstream with a duct for feeding a silo for feeding the flake fiber to downstream with the drum 101, to which the fiber is transferred.
    [0088] Furthermore, the carding machine comprises an extraction cylinder 104 or doffer, downstream of the drum 101. The doffer 104 is surface-trimmed, rotatable on command and counter-rotating with respect to the drum, and operatively engaged with the surface thereof, to take the fiber.
    [0089] Furthermore, the carding machine comprises a device with movable caps 106, comprising a plurality of hats 108, translating along a closed path comprising a working portion parallel to the working surface of the drum 101.
    [0090] With respect to the drum 101, the working portion of the device with movable caps extends between a principle line 1010, defined as a straight line passing through the center of the drum and for the point of the working circumference of the drum in which the caps translators 108 disengage from the drum, and an end line 1012, defined as a straight line passing through the center of the drum and for the point of the working circumference of the drum in which the translating caps 108 start engagement with the drum. The area of the side surface of the drum between the principle line and the end line is called the main carding area.
    [0091] A straight line passing through the center of the drum and the center of the briseur defines a diametric briseur-drum transfer line 1014, since, at the intersection of this with the outer working surface of the drum, an area is formed in which the fiber migrates from the surface of the briseur to the surface of the drum.
    [0092] The area of the drum 101 between the principle line 1010 and the briseur-drum transfer line 1014 defines a pre-carding zone.
    [0093] A straight line passing through the center of the drum and the center of the doffer defines a diametrical transfer line drum-doffer 1016, since, at the intersection of this with the outer working surface of the drum, an area is formed in which the fiber migrates from the surface of the drum to the surface of the doffer.
    [0094] The area of the drum 101 lying between the end line 1012 of the main carding zone and the transfer line drum-doffer 1016 defines a post-carding zone.
    [0095] The area of the drum 101 included between the transfer line drum-doffer 1016 and the briseur-drum transfer line 1014, in the sequence now called and in the direction of rotation of the drum, forms an under-drum area.
    [0096] The carding machine further comprises a support element 1019, on one side and the other of the width of the drum, for supporting the components operating on the drum.
    [0097] The carding machine further comprises at least one nozzle assembly 1020, superimposed on the lateral surface of the drum and adapted to cooperate with the drum for cleaning the fiber dragged therefrom.
    [0098] The nozzle assembly comprises a suction chamber 1022 open towards the lateral surface of the drum 101 through an inlet opening 1022a and connected to air suction means.
    [0099] According to a preferred embodiment, the group 1020 comprises a profiled element 1024, having an axial extension parallel to the axis of rotation of the drum, which defines and delimits at least partially said suction chamber 1022.
    [0100] According to a preferred embodiment, the section 1024 is fixed, for example by means of a structure to the support element 1019, so as to maintain a fixed position in operation and not adjustable.
    [0101] The nozzle assembly 1020 further comprises knife means 1030 suitable for operating on the fiber dragged by the drum to separate from this dirt and impurities.
    [0102] The knife means 1030 comprise a knife 1032 provided with a sharp work edge 1034, projecting towards the lateral surface of the drum, suitable for processing the fiber dragged by the drum interfering mechanically with the impurities present therein, to separate them.
    [0103] The knife 1032 is adjacent to the suction chamber 1022 so that the impurities separated from the fiber are sucked up, and in particular it delimits at least partially the opening 1022a of the suction chamber 1022.
    [0104] The knife 1032 is adjustable, i.e. the position of said knife, and in particular of the working edge 1034, can be modified and fixed to adjust the projection with respect to the lateral surface of the drum.
    [0105] In particular, the knife means 1030 comprise a knife support 1036 suitable for integrally supporting the knife 1032 through fixing means 1037, for example a screw.
    [0106] The knife means comprise knife adjustment means 1040 suitable for being maneuvered to modify the position of the knife 1032 with respect to the lateral surface of the drum, and in particular adapted to operate on the knife support 1036.
    [0107] According to a preferred embodiment, the knife 1032 is radially adjustable, by means of the screw knife recording means 1040, in turn engaged with the support element 1019.
    [0108] The 1036 knife holder is tightly sealed with the 1024 profile, so as to maintain a good seal in the air of the suction chamber.
    [0109] In particular, between the section 1024, for example at one end thereof, and the knife support 1036 there is a gap 1038a necessary to allow the reciprocal movement due to the adjustment of the knife, and a seal 1039a when closing said interspace 1038a towards the outside.
    [0110] The nozzle assembly further comprises a reject element 1070, facing the knife 1032, which cooperates with the profiled element 1024 to delimit the suction chamber 1022 and delimits at least partially, through a portion thereof, the inlet opening 1022a.
    [0111] In particular, the reject element 1070 is arranged upstream of the inlet opening 1022a of the chamber 1022 with respect to the direction of rotation of the drum.
    [0112] Moreover, the reject element 1070 can be moved with respect to the section 1024 and, for example at the end of said section bar 1024, is separated from it by an interspace 1038b; a seal 1039b is also provided for sealing the air space 1038b towards the outside.
    [0113] The reject element 1070 has a base surface 1070a, preferably flat, towards the side surface of the drum 101.
    [0114] The nozzle assembly 1020 comprises reject adjustment means 1080 suitable for being maneuvered to record the gap between the reject element 1070 and the lateral surface of the drum, i.e. to record the radial distance between the base surface 1070a of the reject element and the base area 1070a.
    [0115] According to a preferred embodiment, the reject element 1070 is radially adjustable and the reject adjustment means 1080 are for example a screw, in turn engaged with the support element 1019.
    [0116] For a given position of the knife 1032, adjustable by means of the knife adjustment means 1040, in the maximum reject position (fig. 8), the base surface 1070a of the scrap element 1070 has maximum radial distance from the side surface of the drum , for example equal to 0.5 mm.
    [0117] This configuration allows a considerable suction action, an incisive separation of dirt and impurities from the fiber, also as a function of the adjustment of the knife, which is very exposed, that is invested by a considerable flow of fiber.
    [0118] Furthermore, for a given position of the knife 1032, in the offset position (Fig. 9), the base surface 1070a of the reject element 1070 has a minimum radial distance from the lateral surface of the drum, for example equal to 0, 2 mm.
    [0119] This configuration allows a limited suction, a separation of dirt and impurities from the less incisive fiber, also as a function of the adjustment of the knife, which is little discovered or invested by a limited flow of fiber.
    [0120] According to a variant embodiment, a nozzle assembly 1120 according to the invention comprises a knife support 1136 integrated with an adjacent covering segment 1082 of the drum 101, arranged downstream of said knife support 1136 with respect to the rotation of the drum (fig. 11a).
    [0121] According to a further variant embodiment, similar to the nozzle assembly 1120, a further nozzle assembly 1220 according to the invention comprises a scrap element 1270 integrated with an adjacent covering segment 1082 of the drum 101, arranged upstream of said element 1270 deviation from the drum rotation (fig. 11b).
    [0122] According to a preferred embodiment, the nozzle assembly 1120, 1220 is arranged side-by-side circumferentially with the movable caps 106, at the entrance (fig. 11a) or at the exit (fig. 11b) thereof and has an opening 1090 lateral, facing towards said movable hats, suitable for aspiration of the dust raised by said hats.
    [0123] For example, said lateral opening 1090 is formed between the section 1024 and the knife support 1136 (Fig. 11a) or between the section 1024 and the reject element 1270 (Fig. 11b).
    [0124] According to a further embodiment, a nozzle assembly 1320 is devoid of the knife means or provides fixed knife means, for example consisting of a sharp edge 1024a of the section 1024, projecting towards the lateral surface of the drum 101.
    [0125] The carding machine further comprises functional groups 1100, comprising at least one nozzle assembly 120, 1120, 1220, 1320 and / or at least one covering segment 1082 and / or at least one fixed carding cap 1084.
    [0126] According to a variant embodiment, the functional group provides the nozzle assembly at the end of the group, ie at the exit of the fiber, and is free of intermediate nozzle units.
    [0127] For example, the functional group 1100 comprises, according to the direction of rotation of the drum, the covering segment 1082, a plurality of carding caps 1084, for example eight in number, and the nozzle assembly 1120 with segment downstream ( fig. 10a).
    [0128] According to a further variant of embodiment, the functional group comprises at least one nozzle assembly in an intermediate position within the functional group.
    [0129] For example, carding hats 1084 are provided, variously spaced from knife or knife cutter units adjustable or fixed.
    [0130] For example, the functional group 1100 comprises, according to the direction of rotation of the drum, the covering segment 1082, a pair of carding caps 1084, the nozzle assembly 1020, four carding hats 1084, the nozzle assembly 1220 with segment of downstream cover (fig. 10b).
    [0131] According to a further variant of embodiment, the functional group provides the nozzle assembly at the beginning of the group, ie at the entrance of the fiber and at least one nozzle assembly in an intermediate position within the functional group.
    [0132] For example, the functional assembly comprises, according to the direction of rotation of the drum, the nozzle assembly 1220 with upstream covering segment, a pair of carding caps 1084, the nozzle assembly 1020, a further pair of carding caps 1084 and the cover segment 1082.
    [0133] According to a further embodiment variant, the functional group provides the nozzle assembly at the entrance of the group, ie at the entrance of the fiber, and without intermediate nozzle units.
    [0134] For example, the functional group 1080 comprises, according to the direction of rotation of the drum, the nozzle assembly 1220 with upstream covering segment, a plurality of carding caps 1084, for example in number of six, and the covering segment 1082 (fig. 10d).
    [0135] Preferably, the nozzle assembly 1020, 1120, 1220, 1320 or the functional group 1100 is arranged in the pre-carding area.
    [0136] According to a further embodiment, the nozzle assembly 1020, 1120, 1220, 1320 or the functional group 1100 is arranged in the post-carding area.
    [0137] According to a still further embodiment, the nozzle group 1020, 1120, 1220, 1320 or the functional group 1100 is arranged in the under-drum area.
    [0138] Innovatively, the nozzle assembly according to this variant allows to improve the productivity of the carding machine, since it allows to adjust the suction action on the fiber dragged by the drum according to need and opportunity, for example according to the type of fiber or origin of the same.
    [0139] Advantageously, moreover, the nozzle assembly makes it possible to regulate the action of extracting dirt or impurities as needed, and in particular independently of the suction action.
    [0140] According to a further advantageous aspect, the nozzle assembly is adjustable in a convenient and effective manner by the operator, without disassembly of parts or components to access the adjustment members.
    [0141] It is clear that a person skilled in the art, in order to satisfy contingent needs, could make changes to the nozzle group described above.
    [0142] For example, the knife holder can be adjusted by rotation or by roto-translation.
    [0143] According to a further embodiment variant, the reject element can be adjusted by rotation or by roto-translation.
    [0144] These variants are also contained within the scope of protection as defined by the following claims.
    权利要求:
    Claims (17)
    [1]
    1. Nozzle assembly (20, 120, 220, 320) for a carding machine of a spinning preparation line, comprising- an intake chamber (22) connectable to suction means, having an inlet opening (22a);- adjustment means (50) comprising a shutter element (52), which at least partially delimits the inlet opening (22a);in which the shutter element (22a) is adjustable to choke the inlet opening (22a) of the intake chamber (22).
    [2]
    2. Nozzle assembly according to claim 1, comprising:- knife means (30) adapted to operate on the fiber dragged by the drum to separate from this dirt and impurities, comprising a knife (32, 24a) which delimits at least partially said inlet opening (22a).
    [3]
    3. Nozzle assembly according to claim 2, wherein the knife means (30) are adjustable in position.
    [4]
    4. Nozzle assembly according to claim 3, wherein the knife means can be adjusted radially with reference to a lateral surface of the drum.
    [5]
    5. Nozzle assembly according to claims 3 or 4, wherein the knife means (30) comprise a knife support (36) which integrally supports the knife (32) through fixing means (38), said knife support (36) being adjustable in position to record the position of the knife means.
    [6]
    6. Nozzle assembly according to any one of the preceding claims, in which the shutter element (52) is rotatable on command between a limit position of closure, in which the opening (22a) is completely closed or reduced to the minimum extension, and a limit opening position, in which the opening (22a) is at maximum extension.
    [7]
    7. Nozzle assembly according to any one of Claims 2 to 6, in which the shutter element (52) and the knife (32) define an inlet conduit (60) converging towards the suction chamber (22).
    [8]
    8. Nozzle assembly according to any one of the preceding claims, in which the shutter element (52) comprises a main body (54) delimited by an outer surface (56), at least partially cylindrical, rotatably received in a seat (72), and a protuberance (58) extending from the main body (54).
    [9]
    9. Nozzle assembly according to any one of the preceding claims, in which:- the adjustment means (50) comprise an adjustment support (70) which supports the shutter element (52), having a base surface (70a), and in which- the throttling element (52) has an external cam surface, so that- in the limit opening position, between the lower limit edge of the throttling element 52 and the base surface (70a) of the adjustment support (70) there is a maximum height difference, and- there is a minimum height difference in the closing limit position between the lower limit edge of the restrictor element (52) and the base surface (70a) of the adjustment support (70).
    [10]
    10. Escutcheon assembly according to claim 9, wherein the adjustment support (70) comprises a guide (80) suitable for driving the throttling element (52) in movement.
    [11]
    11. Nozzle assembly according to Claim 2, in which the knife (32) is fixed.
    [12]
    12. Nozzle assembly according to claim 11, wherein the fixed knife is constituted by a sharp edge (24a) of a section bar (24) which delimits the suction chamber (22).
    [13]
    13. Functional unit (80) comprising- at least one nozzle assembly (20, 120, 220, 320) made according to any one of the previous claims; is- at least one fixed cover segment (82) integrated with the nozzle assembly and / or at least one fixed carding cap (84).
    [14]
    14. Carding machine comprising:- a nozzle assembly (20, 120, 220, 320) according to any one of claims 1 to 12;- a support element (19) arranged outside the width of the drum (1) and in correspondence with the lateral surface thereof, which supports the nozzle assembly,- an introduction cylinder (2) or briseur,- an extraction cylinder (4) or doffer ed- a device with movable caps (6).
    [15]
    15. Carding machine according to claim 14, wherein the shuttering element (52) can be maneuvered in correspondence with said support element (19).
    [16]
    16. Carding machine according to claim 14 or 15, wherein the knife (32) is adjustable in correspondence with said support element (19).
    [17]
    17. Carding machine according to any of the claims from 14 to 16, in which the nozzle assembly is arranged in the pre-carding area or in the post-carding area or in the under-drum area.
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    同族专利:
    公开号 | 公开日
    CN104204316B|2017-03-08|
    IN2014MN01445A|2015-04-03|
    DE112013000773T5|2014-10-30|
    CN104204316A|2014-12-10|
    WO2013114279A1|2013-08-08|
    BR112014018855B1|2021-03-16|
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    CN201250301Y|2008-09-10|2009-06-03|浙江锦峰纺织机械有限公司|Web purifier with an adjustable suction port|CH712531A1|2016-06-09|2017-12-15|Rieter Ag Maschf|Device for cleaning revolving lids.|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ITBS20120014|ITBS20120014A1|2012-01-31|2012-01-31|SUCTION NOZZLE OF A THROWING MACHINE|
    ITBS20120013|ITBS20120013A1|2012-01-31|2012-01-31|SUCTION NOZZLE OF A THROWING MACHINE|
    PCT/IB2013/050760|WO2013114279A1|2012-01-31|2013-01-29|Suction nozzle of a carding machine|
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