JP6012374B2 - Comb strip for suction nozzle of each working part of textile machine that manufactures twill winding package - Google Patents

Description

  The present invention relates to a comb strip for a suction nozzle of each working part of a textile machine for producing a traversing package, which is described in the premise of claim 1.

  With regard to the operation of textile machines that produce traversed packages, especially automatic traversing machines, for many years when rewinding is interrupted, for example during thread breaks, controlled cutting by clearers or changing transport packages, the working unit calculator Therefore, it is common to operate an automatic yarn coupling device unique to the working unit.

  As described in German Patent Application Publication No. 4005752, for example, the working unit computer is a first type of winding package that slowly rotates a suction opening of a so-called suction nozzle in a direction opposite to the winding direction. A negative pressure is applied to the surface. At this time, the suction nozzle attempts to receive the yarn end portion of the upper yarn from the surface of the winding package formed as a traverse winding package in an aerodynamic manner by the suction opening. After gripping the upper thread end, the suction nozzle pivots back to its starting position where the suction opening of the suction nozzle is positioned below the yarn splicing device. At that time, the yarn strand extending between the traverse package and the suction nozzle is connected to the electronic yarn clearer arranged above the yarn coupling device, to the yarn clamping device positioned in the region of the yarn coupling device, and to the yarn guide plate. And through the corresponding guide contours of the yarn guide bending member, into which the thread of the yarn cutting device located below the splicing device enters.

  At the same time as the suction nozzle, the gripper pipe positioned at the lower starting position pivots to the upper working part, and at that time, for example, the lower thread fed from the transport package held by the thread tension device up to that point is used. Take me with you. When the gripper tube turns in the upper working part, the lower thread similarly guided by the corresponding thread guide contour moves to the attached open thread clamping device and also the open thread cutting device. The lower thread and the upper thread are then cut to a precise length, prepared in a so-called holding and defibrating tube, and joined together in a yarn twisting device. In short, the working section of the automatic traverse winding machine always needs not only the upper thread brought back from the traverse package but also the lower thread coming from the conveying bobbin in order to continue operation automatically after the yarn breakage, for example. It is said.

  The above-described yarn binding devices and the accompanying suction nozzles and gripper tubes have been demonstrated and have been used extensively in the textile industry for some time.

  Of course, with known suction nozzles, problems may arise in some cases when receiving the yarn ends that wrap around the surface of the twill package. Such problems are particularly pronounced when the yarn ends that wrap around a twill package are relatively strongly kneaded and / or when there are, for example, some difficult, for example, particularly fuzzy (polychassy, tangled) yarns. Arise.

  In order to assist the suction nozzle in receiving yarn ends that are somewhat difficult to handle, it has already been proposed to place a comb strip in the region of the suction opening of the suction nozzle. The sucked yarn is captured by the comb strip.

  Such comb strips arranged in the area of the suction opening of the suction nozzle are known and are described in greater detail, for example, in DE 102006039735 or EP 0398415. .

  For example, German Offenlegungsschrift DE 102006039735 describes a suction nozzle, which has a particularly suitable suction characteristic, based on the particular configuration of the suction head. A preferred suction nozzle is additionally provided with a comb strip in the region of the suction opening, the comb strip being arranged on the cover element of the suction nozzle head and having teeth of the same length arranged side by side. Has a column.

  Similarly, EP 0 398 415 discloses a comb strip which is arranged in the region of the suction opening of the suction nozzle. Furthermore, EP 0 398 415 describes how such a comb strip can be produced. In other words, according to the above-mentioned patent document, such a comb strip is manufactured by a laser cutting device, in which a stack of base plates is first separated, and a plurality of teeth of the same size are formed in the region of the cutting edge each time. Is done.

  Further, in U.S. Pat. No. 2,857,113, a suction nozzle is known which has a needle comb in the area of the suction opening or is sanded in the area of one of the suction nozzle walls. It is formed in a rough shape.

  Furthermore, for example, Austrian Patent 368106 describes a suction nozzle, which is provided with a special thread lifting device in the region of the suction opening. The yarn lifting device includes a roller that rotates together with the winding package, and a contact roller configured as a multi-row worm. In practice, the relatively cumbersome and sensitive devices known from Austrian Patent 368106 have not been established.

  A suction nozzle with a comb strip as described above has a much higher success rate in receiving the yarn end pneumatically than a suction nozzle that does not already have a comb strip. Further improvements are possible with respect to the configuration of the comb strip.

German Patent Application Publication No. 102006039735 European Patent Publication No. 0398415 US Pat. No. 2,857,113 Austrian Patent No. 368106

  Starting from the background art, the object of the present invention is not only to restrain the yarn end sucked into the suction nozzle, but also to release the yarn end wound around the surface of the traverse package from the surface of the traverse package. It is to provide an inexpensive comb strip for a suction nozzle that is shaped to facilitate.

  In order to solve this problem, according to the present invention, there is provided a comb strip for a suction nozzle of each working part of a textile machine that manufactures a spiral wound package, wherein the suction nozzle is used for yarn breakage or controlled yarn cutting. A suction opening that receives the yarn end wound around the surface of the twill winding package in an aerodynamic manner is provided, and a comb strip disposed in the region of the suction opening restrains the bent portion and the sucked yarn end. In this case, the comb strip is provided with at least one structured surface, that is, a surface having irregularities, produced by a photochemical etching method in the region of the bent portion.

  Preferably, the two structured surfaces are provided in the area of the fold, so that a smooth comb strip region is formed between the two structured surfaces. The planes are spaced from each other.

  Preferably, a contour edge having an undercut is provided in the area of the structured surface.

  Preferably, the structured surface is spaced above the dentition of the comb strip, the dentition comprising a plurality of large teeth and a plurality of small teeth, between the two large teeth. One small tooth is arranged for each.

  According to the advantages of the manufacture and construction of the suction nozzle comb strip according to the invention, a comb strip with at least one structured surface is formed in the region of the folding portion of the comb strip, in particular simple and inexpensive. The structured surface can have a surface that facilitates the release of the yarn end from the surface of the twill package. In other words, the structured surface of the comb strip produced by photochemical etching significantly improves the release of the yarn end, especially in the case of troublesome yarns, which are often characterized by large fuzzy properties.

  As claimed in claim 2, in a preferred embodiment, the comb strip comprises two structured surfaces between which a smooth comb strip region is formed. So that they are spaced apart from each other. With such a configuration, on the one hand, when receiving the yarn, one of the structured surfaces with a high probability acts on the yarn end, in which case the yarn end is released from the surface of the twill package. On the other hand, a smooth comb strip area arranged between the structured surfaces ensures that if necessary, a pre-set yarn length can be drawn without problems via the suction nozzle. Since the sucked yarn is always slid to the center of the suction nozzle, the yarn is not unwound in the region of the folded portion of the comb strip.

  In a preferred embodiment, the structured surface has a contoured edge with an undercut as claimed in claim 3. Such undercuts arranged in the area of the contour edge, for example, easily grip the protruding edge fibers, so that the yarn ends can be lifted off the surface of the twill package as desired, especially during fuzzy yarns. It is extremely effective.

  According to claim 4, the structured surface is spaced above the teeth of the comb strip. The dentition has a large number of large teeth for receiving the yarn ends and a number of small teeth for constraining the yarn ends. That is, one small tooth is positioned between each two large teeth. In the manufacturing method based on “photochemical etching”, both a structured surface and a dentition with a fine structure can be accurately and inexpensively manufactured in one operation process.

1 schematically shows one winding section of a textile machine, in the illustrated embodiment of an automatic traversing machine, having a suction nozzle with a comb strip according to the invention for producing a traversing package. 1 is a perspective view of a suction nozzle head of a suction nozzle with a comb strip according to the present invention. FIG. It is a front view of the comb strip by this invention.

  Next, the form for implementing this invention is explained in full detail using the aspect of illustration.

  FIG. 1 is a schematic side view of a textile machine for manufacturing a traverse winding package, that is, a rewinding working section 2 of a so-called automatic traverse winding machine 1 in the illustrated embodiment.

  Such an automatic traversing machine 1 is normally provided with the working part 2 as the same many rewinding parts arrange | positioned along with the row. Although not known in detail, the spinning cup 3 produced by the ring spinning machine is rewound onto the large capacity traverse package 5 in the working unit 2. After completion, the traverse package 5 is delivered to a traverse package transporting device 7 extending over the machine length by a service assembly that performs automatic work (not shown), preferably a traverse package changer. It is transported to a package loading station or the like arranged on the end side.

  As shown in the illustrated embodiment, the automatic traversing machine 1 is often provided with a logistic device configured as a bobbin / pipe transport system 6, in which a spinning cup 3 or an empty pipe is provided. Circulates on the transport tray 11. Of the bobbin / tube bobbin transport system 6, FIG. 1 shows only a cup supply section 24, a reversibly drivable storage section 25, a lateral transport section 26 leading to the rewinding unit 2, and a pipe return guide section 27. Yes.

  Furthermore, each working part 2 of the automatic traversing machine 1 is equipped with various other devices which are necessary for regular operation of the working part 2, which are known and therefore not described in detail. Each working unit 2 includes, for example, a working unit computer 28, and the working unit computer 28 is connected to the central control unit 30 of the automatic traverse winding machine 1 through a bus connection unit 29, and each working unit 2. Is provided with a winding device 4, and the winding device 4 is provided with a package holding frame 8 that is movably supported around a turning shaft 12.

  As can be seen from FIG. 1, during winding operation, the traverse package 5 held in the package holding frame 8 so as to be freely rotatable is placed on the surface of the support / drive roller 9 for support / drive. An electric motor 33 acts on the roller 9. The electric motor 33 is connected to the working unit computer 28 via the control line 35.

  In order to traverse the wound yarn 16 during the winding process, a yarn traversing device 10 is provided, which comprises, for example, a yarn guide finger 13, and the yarn guide finger 13 is electrically driven. The motor-type driving device 14 acts to traverse the yarn 16 wound around the traverse package 5 between the end faces of the traverse package 5. The yarn guide driving device 14 is operatively connected to the working unit computer 28 via the control line 15.

  Furthermore, such a working part 2 comprises a yarn coupling device 42, preferably an aerodynamic twisting device 42, a gripper tube 43 for manipulating the bobbin thread, and the suction nozzle 17, and the suction nozzle 17, the yarn end portion wound around the surface of the traverse package 5 after interruption of winding is received and can be introduced into the yarn coupling device 42. As can be seen from FIG. 2, for example, the suction nozzle 17 is provided with a suction opening 23 in the part of the suction nozzle head 18, which is provided with a comb strip 19 according to the invention.

  In this case, the comb strip 19 is structured (having irregularities) in the region of the dentition 22 provided with the large teeth 20 and the small teeth 21 and the bent portion 31, as can be seen well from FIG. A surface 32 is provided.

  In addition, a smooth comb strip region 34 is provided between both structured surfaces 32 which are arranged, for example, above the tooth row 22 with a spacing a. The smooth comb strip region 34 ensures that the sucked yarn that is to be guided to the center of the suction nozzle can enter the suction nozzle 17 relatively smoothly if necessary.

  The comb strip 19 according to the invention is preferably made from a spring steel plate having a thickness of 0.2 mm to 0.5 mm.

  As described above, a photochemical etching method is a preferred method for manufacturing the comb strip according to the present invention. Such manufacturing methods in which short-wave radiation is used to perform photochemical processes (very precise material delamination occurs in exposed areas of thin spring steel in the photochemical process) enables both structured surfaces and fine tooth geometry It can be manufactured at low cost.

  DESCRIPTION OF SYMBOLS 1 Automatic traverse winding machine, 2 Working part, 3 Spinning cup, 4 Winding device, 5 Traverse winding package, 6 Bobbin / pipe transport system, 7 Traverse package transport device, 8 Package holding frame, 9 Support / drive roller, 10 Traverse device, 11 Conveying plate, 12 Rotating shaft, 13 Thread guide finger, 14 Drive device, 15 Control line, 16 Thread, 17 Suction nozzle, 18 Suction nozzle head, 19 Comb strip, 20 Large teeth, 21 Small teeth, 22 Dentition, 23 suction opening, 24 cup supply section, 25 storage section, 26 lateral transport section, 27 pipe return guide section, 28 working section calculator, 29 bus connection section, 30 central control unit, 31 bent section, 32 structured Surface, 33 electric motor, 34 combs Lip region, 35 control lines 42 yarn binding apparatus 43 gripper tube

Claims (5)

A comb strip for a suction nozzle of each working part of a textile machine for manufacturing a twill package,
The suction nozzle has a suction opening that pneumatically receives the yarn end that wraps around the surface of the twill package after thread breakage or controlled yarn cutting, and a comb strip arranged in the area of the suction opening is folded. In what has a bending part and a tooth row for constraining the sucked yarn end,
The comb strip (19) has at least one structured surface having a surface in the region of the fold (31) that promotes the release of the yarn end from the surface of the traverse package (5). A comb strip comprising (32).   Two structured surfaces (32A, 32B) are provided in the region of the fold (31), and a smooth comb strip region (34) between the two structured surfaces (32A, 32B). The comb strip according to claim 1, wherein the two structured surfaces (32A, 32B) are spaced apart from each other such that is formed.   Comb strip according to claim 1 or 2, wherein a contour edge with an undercut is provided in the region of the structured surface (32; 32A, 32B).   The structured surface (32; 32A, 32B) is spaced apart above the dentition (22) of the comb strip (19), the dentition (22) comprising a plurality of large teeth (20) and Comb strip according to claim 1, comprising a plurality of small teeth (21), each having a small tooth (21) arranged between two large teeth (20). The comb strip according to any one of claims 1 to 4, wherein the structured surface (32; 32A, 32B) is an uneven surface.

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