• 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 method of registering the advancement of a fiber veil operated by the feeding cylinder (12) on the edge of the pincer (4) of a combing machine envisages replacing the main wheel (14 ') applied to the feeding cylinder (12) with a a further wheel having a different number of teeth and the same pitch as the previous one, without changing the configuration of the caliper.
    公开号:CH708536B1
    申请号:CH02025/14
    申请日:2013-07-23
    公开日:2017-06-30
    发明作者:Girolamo Prandini；Soliani C/O Marzoli S P A Luca
    申请人:Marzoli Machines Textile Srl；
    IPC主号:
    专利说明:

    Description [0001] The subject of the present invention is a method of recording, in a combing machine, the advancement of a fiber web with tear-off roller cylinders.
    [0002] In a preparation line for spinning, after the initial steps of opening and cleaning the fiber, carding is performed by carding machines, following which the fiber is in the form of a veil.
    [0003] After a possible working on a stirrup adjuster, in which several separate webs are joined to obtain a web, the web or web is combed by a combing machine, in order to obtain a web in which the fibers are highly parallelized and clean.
    [0004] The combing machine comprises a gripper assembly, comprising a lower jaw, an upper jaw and a feeding cylinder, supported by a lower frame, and at least a pair of detaching cylinders, downstream of the gripper assembly.
    [0005] The veil entering the combing machine is brought to the feeding cylinder, which has an intermittent motion and, keeping the veil stapled, makes only one lock come out; the strand, combed at the head by the circular comb, is torn by the tearing cylinders, to then be combed in the tail by the rectilinear comb and join the previous lock.
    [0006] The length of the lock fed by the feeding cylinder is of particular importance for the quality of the veil; in general, the shorter the lock, the higher the quality; however, the shorter the hair length, the lower the productivity of the plant.
    [0007] According to the type of fiber being processed and the quality of the veil to be obtained, it is necessary to perform adjustment operations on the clamp unit, in order to vary the size of the intermittent rotation of the feeding cylinder and therefore the length of the lock.
    [0008] The need to perform such recording operations must also be taken into account during the design of the combing machine. This necessity makes the design, and in particular the definition of the laws of motion that govern the alternating movement of the jaws, which is particularly difficult.
    [0009] Furthermore, such recording interventions involve long machine stopping intervals and verification procedures before recovery, with consequent loss of plant productivity.
    [0010] The object of the present invention is to provide a method for recording the intermittent movement of the feeding cylinder of a combing machine that satisfies the aforementioned requirements and overcomes the aforementioned drawbacks with reference to the known art.
    [0011] This object is achieved by a recording method performed in accordance with claim 1.
    [0012] The characteristics and advantages of the recording method 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 shows a gripper assembly of a combing machine, suitable for carrying out the registration method according to the present invention; fig. 2 shows a schematic side view of the gripper assembly of fig. 1; and fig. 3a, 3b and 3c represent the gripper assembly of Fig. 1 provided respectively with a different main wheel.
    [0013] A combing machine according to the invention comprises a gripper assembly 1 and a circular comb operable in rotation, arranged below the gripper assembly.
    [0014] The gripper assembly 1 comprising a gripper 4. The gripper 4 comprises a lower jaw 6, supported by a lower frame 7, an upper jaw 8, supported by an upper frame 9 and hinged in a hinging axis 10 to the lower jaw 6, and a rectilinear comb, integral with the lower jaw, in the front area of the same.
    [0015] Furthermore, the clamp unit 1 comprises a feeding cylinder 12, which can be rotated on command, supported by the lower frame 7. The feed cylinder 12 is therefore on the edge of the clamp 4.
    [0016] Downstream of the gripper assembly 1, pairs of detaching cylinders are provided, which can be rotated on command with alternating rotary motion.
    [0017] The pincer 4 is equipped with reciprocating forward and backward motion; in an advanced position, the jaws 6, 8 are proximal to the tearing and open cylinders, so as to allow combing of the tail of the lock by the straight comb; in a retracted position of the gripper, the jaws 6, 8 are distal to the detaching cylinders and closed in clamping, so as to allow combing of the head by the circular comb.
    [0018] During the advancement phase of the gripper, i.e. when the gripper moves from the retracted position to the forward position, or during the return phase, i.e. when it moves from the advanced position to the retracted position, the feeding cylinder makes an intermittent rotation, according to a direction of advancement A, so as to advance a portion of the veil, to form a new lock to be combed.
    [0019] For this purpose, the gripper assembly comprises a main wheel 14, integral in rotation with the feed cylinder 12; for example, the main wheel 14 is fixed, in a removable manner, to the axial end of the feed cylinder 12, coaxially thereto.
    [0020] The main wheel 14 is provided with a plurality of teeth 16, which follow one another circumferentially, between which slots 18 are formed.
    [0021] The gripper assembly 1 also comprises means for intermittently moving the main wheel 14, synchronized with the gripper 4.
    [0022] For example, the intermittent movement means comprise a lever 20, hinged to the upper frame 9, adapted to engage with the main wheel 14 to force it in rotation in the direction of advancement A.
    [0023] Preferably, the lever 20 comprises a termination 22 adapted to be inserted in the cavities 18 between the teeth 16 of the main wheel 14.
    [0024] The lever 20 can be rotated in a synchronized manner with the pincer 4, so that the rotation of the lever 20 occurs when the lower jaw 6 is in a predefined position with respect to the detaching cylinders.
    [0025] For the main wheel 14, having a characteristic diameter "D", a pitch "p" and a number of teeth "Z" are defined. The diameter D, the pitch for the number of teeth Z are linked by the formula p * Z = π * ϋ.
    [0026] At each combing cycle, the lever imposes a controlled rotation on the wheel 20 corresponding to a step; in other words, the termination 22 of the lever disengages from a slot 18 and goes to engage the adjacent slot.
    [0027] Let us assume that the clamp unit 1 is provided with a first main wheel 14 'having a diameter D1, a number of teeth Z1 and a step p1.
    [0028] At each stroke of the combing machine, the feeding cylinder will undergo a rotation, to which corresponds a predetermined advancement of the veil.
    [0029] In order to obtain a variation of the advancement of the web, the recording method envisages replacing the first main wheel 14 'with a second main wheel 14 "having a pitch p2 substantially equal to the pitch p1 of the first main wheel 14' , a number of teeth Z2 different from the number of teeth Z1 of the first main wheel 14 'and a diameter D2 different from the diameter D1 of the first main wheel 14'.
    [0030] Once the replacement has been carried out, the second main wheel 14 "is already arranged in the angular position which allows engagement with the intermittent advancing means, ie with the termination 22 of the lever 20, which can be introduced into the cavity between two teeth of the second main wheel 14 ".
    [0031] The pitch p2 of the second main wheel 14 "is" substantially "equal to the pitch p1 of the first main wheel 14 'in the sense that slight deviations between the two steps are possible, in order to recover any play or dimensional variations.
    [0032] However, according to the recording method, after replacing the first wheel 14 with the second wheel 14 ", the step of engaging the advancing means with the second main wheel 14" follows without modifying the configuration of the pincer, that is, without changing the mutual distance between the jaws.
    [0033] The recording method envisages using a kit of main wheels having substantially the same pitch p, but different number of teeth Z and therefore different diameter D.
    [0034] Moreover, when it is necessary to replace one main wheel with another having a different number of teeth, the recording method allows this replacement in any configuration of the caliper; in other words, contrary to what happens with the prior art combing machines, it is not necessary to bring the caliper assembly into a specific recording configuration defined by a caliper.
    [0035] Preferably, instead, the recording method according to the invention provides for bringing the gripper into a predefined recording configuration, in which the lower jaw 6 and the upper jaw 8 are arranged in a predefined reciprocal position, only for the first registration, ie for registration carried out by specialized technicians at the end of the assembly of the combing machine in the spinning.
    [0036] Innovatively, the recording method according to the present invention satisfies the recording requirements and overcomes the drawbacks mentioned with reference to the known art.
    [0037] Advantageously, in fact, the recording method makes it possible to modify the advancement of the web quickly, by replacing one main wheel with another, without changing the reciprocal position between the jaws of the caliper in the configuration assumed during the recording.
    [0038] According to a further advantageous aspect, the recording method makes it possible to simplify the design phase, and in particular allows to optimally define the laws of the motion of the jaws, since the relative positioning between the jaws is not modified during the recording.
    权利要求:
    Claims (2)
    [1]
    [0039] It is clear that a person skilled in the art, in order to satisfy contingent needs, could make changes to the recording method described above, all contained within the scope of protection as defined by the following claims. claims
    1. Method of recording, in a combing machine, a line for preparing the spinning, of the intermittent advancement of a fiber veil operated by a feeding cylinder (12) arranged on a gripper (4) and movable by advancement means , said advancing means comprising a lever (20) rotatable in a synchronized manner with the pincer (4) and adapted to engage with a main wheel (14 ', 14 ", 14"') fixed to the feeding cylinder (12) to force it rotating in a direction of advance (A), comprising, in a configuration of the gripper, the step of replacing a first main wheel (14 ') applied to the feeding cylinder (12), having a first diameter (D1), a first number of teeth (Z1) and a first step (p1), with a second main wheel (14 ") having a second pitch (p2) substantially equal to the first step (p1) and a second diameter (D2) different from the first diameter ( D1) of the first main wheel (14 '), and the phase of engaging i advancement means, or the lever (20), with the second main wheel (14 ") without modifying the configuration of the caliper.
    [2]
    2. Kit for carrying out a method of recording, in a combing machine, a line for preparing the spinning, of the intermittent feeding of a fiber veil operated by a feeding cylinder (12) on a gripper (4) , comprising a plurality of main wheels (14 ', 14 ", 14'") having substantially equal pitch (p1, p2, p3), different diameters (D1, D2, D3) and number of teeth (Z1, Z2, Z3) differently, the fiber web being movable by means of advancement comprising a lever (20) rotatable in a synchronized manner with the pincer (4) and suitable for engaging with one of the main wheels (14 ', 14 ", 14'") fixed to the feeding cylinder (12) to force it in rotation in a forward direction (A).
    类似技术:
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    同族专利:
    公开号 | 公开日
    DE112013003704T5|2015-04-09|
    CN104520479A|2015-04-15|
    JP2015526606A|2015-09-10|
    BR112015000720A2|2017-06-27|
    DE112013003704B4|2019-10-10|
    IN2015DN00479A|2015-06-26|
    JP6333247B2|2018-05-30|
    ITBS20120123A1|2014-01-28|
    WO2014016769A1|2014-01-30|
    CN104520479B|2018-01-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    LU54537A1|1967-09-26|1969-06-24|
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    IN172069B|1987-12-24|1993-03-27|Rieter Ag Maschf|
    JP2642201B2|1989-09-08|1997-08-20|株式会社原織機製作所|Driving device for detaching roller in comber|
    IT1317208B1|2000-04-11|2003-05-27|Vouk S P A Officine Meccanotes|CONTROL UNIT FOR STEPPING THE PILGRIM OF THE RIPPING CYLINDERS IN A COMBINING MACHINE|
    EP1449944B1|2003-02-21|2008-04-02|Maschinenfabrik Rieter Ag|Nipper mechanism for a combing machine|
    WO2012035543A1|2010-09-14|2012-03-22|Lakshmi Machine Works Ltd.|A nipper gauge setting apparatus|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT000123A|ITBS20120123A1|2012-07-27|2012-07-27|METHOD OF RECORDING THE ADVANCEMENT OF A FIBER SAIL TO THE ROLLER CYLINDERS OF A COMBING MACHINE AND ITS KIT|
    PCT/IB2013/056034|WO2014016769A1|2012-07-27|2013-07-23|Method for adjusting the advancement of a fiber web to the detaching cylinders of a combing machine and kit therefor|
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