JP5930301B2 - Finger-shaped yarn guide - Google Patents

Description

  The present invention is a finger-shaped yarn guide used in a yarn traversing device provided in a working unit of a textile machine for manufacturing a traversed package, the finger-shaped yarn guide having an elongated base body, The base body is connectable to a reversible drive device through a mounting opening, and has a wear-resistant yarn guide element at a free end of the base body. The present invention relates to a finger-shaped yarn guide that reciprocates a yarn traveling toward the surface of a traverse package during a take-up operation.

  Finger-shaped yarn guides used in a yarn traversing device provided in a working unit of a textile machine for manufacturing a traverse package are known, for example, International Publication No. 00/24663, German Patent Application Publication No. 102005059028. Or German Patent Application Publication No. 102008053261.

  International Patent Publication No. WO 00/24663 describes a yarn guide formed in a finger shape, for example. The yarn guide has an overall relatively small thickness and is thereby formed with as low a mass as possible. The yarn guide has, at its free end, a yarn guide fork for receiving and guiding the supplied yarn. In this known example, the yarn guide fork is additionally machined with rounds and interrupted edges to reduce the friction that occurs between the yarn and the finger yarn guide during the winding process. Furthermore, the yarn guide fork has a surface coating. The coating material of this surface coating is excellent in terms of high wear resistance as well as relatively little friction.

  However, in the case of this known finger-shaped yarn guide, in part, it takes a lot of effort on the legs of the yarn guide fork to reliably prevent wear on the finger-shaped yarn guide or guided yarn. Another disadvantage is that one of the fingers of the finger-shaped yarn guide is at risk of being caught by a loop created when the yarn is unwound from the cup. As a result, the finger-shaped yarn guide, which is usually easily damaged, is immediately plastically deformed and thus cannot be used.

  A corresponding finger yarn guide is also known from DE 102005059028. The finger-shaped yarn guide described in this specification has two yarn guide elements formed as a cylindrical hollow body made of ceramics at the free end of its base. Both yarn guide elements are fitted into the base body in a shape connection and / or a friction connection to form a yarn guide fork. Between the yarn guide forks, the yarn traveling towards the traverse package is guided during the winding process. Forming the yarn guide element from ceramic has the advantage that this material is very wear resistant and thus can minimize the wear phenomenon on the yarn guide element.

  However, in the case of this known finger-shaped yarn guide, the hollow ceramic guide element directly bonded to the yarn guide substrate does indeed suffer from significant wear, even in the case of a biased yarn. However, based on the relatively low breaking elongation of the ceramics and the high-frequency supply of the yarn, for example, as a result of the bending moment generated in the base body, there is always a risk that the yarn guide element will break easily or light weight In the case of a yarn guide element in which a ceramic sleeve is arranged on a rod made of a high-strength material, it has been found that it is disadvantageous that the ceramic is peeled off from the rod.

  Furthermore, a finger-shaped yarn guide is known from DE 102008053261. This known finger-shaped yarn guide has a base formed by a magnesium die cast member. A ceramic yarn guide element is connected to the free end of the base body via a bending elastic rod. That is, the carbon fiber rod is fixed by adhesive bonding in the corresponding hole of the magnesium base. The carbon fiber rods are each fixed with a ceramic yarn guide element, preferably also by adhesive bonding. By supporting this ceramic yarn guide element on a bending elastic rod, the bending moment generated during the supply of the yarn is absorbed by the bending elastic rod and is thus avoided from the ceramic yarn guide element. Is being achieved.

  The configuration of the finger-shaped yarn guide known from German Offenlegungsschrift DE 102008053261 does indeed significantly improve the finger-shaped yarn guide known prior to the present specification, but the finger-shaped yarn guide of the same specification. Yarn guides also have different disadvantages. The adhesive joint in the range of the carbon fiber rod forms a mechanical weakening point, for example. Furthermore, a further drawback of this known finger yarn guide is that the elastic strength of the magnesium substrate in the direction transverse to the direction of movement of the finger yarn guide is relatively low. That is, the magnesium substrate is arbitrarily deformed by a slight lateral force.

  It has been found that the mechanical processing that is required in connection with the joining of different components or that is required during assembly is relatively expensive. In order to ensure an orderly assembly of such finger-shaped yarn guides, for example, each finger-shaped yarn guide must first be individually adapted to its drive unit. In that case, the magnesium substrate is plastically deformed by manual adjustment.

International Publication No. 00/24663 German Patent Application Publication No. 102005059028 German Patent Application No. 102008053261

  Starting from the finger-shaped yarn guide described above, it is an object of the present invention to provide a finger-shaped yarn guide that does not have the disadvantages of the known finger-shaped yarn guides and can be manufactured at low cost. .

  In order to solve this problem, according to the finger-shaped yarn guide according to the present invention, the finger-shaped yarn guide is formed as a component member composed of a plurality of components, and has a base body made of plastic. A carbon fiber rod extending beyond the length of the base body and a fixing / restraining element are embedded in the base body by injection molding of the plastic.

  According to an advantageous embodiment of the finger-shaped yarn guide according to the invention, the carbon fiber rod is formed as a solid rod.

  According to an advantageous embodiment of the finger-shaped yarn guide according to the invention, the carbon fiber rod is formed as a hollow rod.

  According to an advantageous embodiment of the finger-shaped yarn guide according to the invention, the carbon fiber rod has a circular cross section.

  According to an advantageous embodiment of the finger-shaped yarn guide according to the invention, the carbon fiber rod has an elliptical cross section.

  According to an advantageous embodiment of the finger-shaped yarn guide according to the invention, the carbon fiber rods are each provided with wear-resistant protective means in the section protruding beyond the base body.

  According to an advantageous embodiment of the finger-shaped yarn guide according to the invention, the wear-resistant protective means is a tube made of oxide ceramics, which tube is partly in the base body by injection molding of the plastic. Embedded together.

  According to an advantageous embodiment of the finger-shaped yarn guide according to the invention, the wear-resistant protective means is a chrome-plated steel pipe, which is joined together in the base body by injection molding of said plastic. Embedded in.

  According to an advantageous embodiment of the finger-shaped yarn guide according to the invention, the wear-resistant protective means are additionally positioned by means of an abutment support member formed in the semicircular shape of the base body.

  According to an advantageous aspect of the finger-shaped yarn guide according to the present invention, the fixing / restraining element comprises a central support sleeve for the motor shaft of the drive device, and a plurality of sleeve-like attachments for positioning the fixing means, It has a plurality of stoppers and stoppers.

  According to an advantageous aspect of the finger-shaped yarn guide according to the invention, the at least one sleeve-like attachment has a female thread and the abutment means can be positioned by the female thread.

  According to an advantageous embodiment of the finger-shaped yarn guide according to the invention, the base body comprises a sliding element, which corresponds to a sliding guide arranged, for example, in the drive, during the winding process. doing.

  According to an advantageous embodiment of the finger-shaped yarn guide according to the invention, the sliding element is exchangeably fixed to the base body of the finger-shaped yarn guide.

  In the finger-shaped yarn guide according to the invention formed as a composite component, i.e. a component consisting of a plurality of components, it is advantageous to optimally combine different materials, each having very unique material properties. The production method “plastic injection molding” is used. That is, the finger-shaped yarn guide according to the present invention has a base body made of plastic. In the base body, a carbon fiber rod extending beyond the length of the base body and a fixing / restraining element are embedded by plastic injection molding, that is, insert molding is performed.

  Since the specific gravity of the base body as a plastic member formed at the time of manufacturing the finger-shaped yarn guide according to the present invention is significantly lower than the specific gravity of the magnesium base used in the conventional finger-shaped yarn guide, the finger according to the present invention When manufacturing the yarn guide, the length of the carbon fiber rod used is relatively freely selected. That is, even when the carbon fiber rod is extended beyond the range of the finger-shaped yarn guide base body for strength reasons, there is never an increase in the total moment of inertia compared to known finger-shaped yarn guides. There is no such thing. The finger-shaped yarn guides formed in this way are based on carbon fiber rods embedded by plastic injection molding and are extremely flexible in both the direction of movement of the finger-shaped yarn guide and in the direction transverse to this direction of movement. And shape stability at the same time. That is, in such a finger-shaped yarn guide, plastic deformation does not actually occur.

  Furthermore, the finger-shaped yarn guide according to the present invention can be manufactured at low cost. This is because, during manufacture, mechanical processing of the joint surface is not required, and any adhesive joint portion that generally has to be manufactured with relatively much effort is not formed.

  As described in claim 2 or claim 3, the carbon fiber rod constituting the basis for stabilizing the finger-shaped yarn guide according to the present invention is formed as a solid rod or a hollow rod. In particular, carbon fiber rods formed as hollow rods can produce finger yarn guides of extremely low mass despite being extremely rigid, whereas carbons formed as solid rods A finger-shaped yarn guide with a fiber rod can be manufactured relatively inexpensively.

  Different possibilities have also been proposed for the cross section of the carbon fiber rod of the finger-shaped yarn guide. According to claim 4, the carbon fiber rod may have, for example, a circular cross section. This constitutes one aspect that is relatively inexpensive. However, it is also possible to use a finger-shaped yarn guide whose carbon fiber rod used has, for example, an elliptical cross section (claim 5). The use of carbon fiber rods with an elliptical cross section makes it possible to easily further increase the bending stiffness of, for example, finger-shaped yarn guides. At this time, the mass of the finger-shaped yarn guide and thus the total moment of inertia is not increased. Depending on the positioning of the axis of the ellipse, it is possible to improve the bending rigidity in the direction of movement of the finger-shaped yarn guide or to improve the bending rigidity in the direction transverse to the direction of movement of the finger-shaped yarn guide.

  Furthermore, in an advantageous aspect, as described in claim 6, the carbon fiber rod embedded in the base body by plastic injection molding is provided with a wear-resistant protective means in each section protruding beyond the base body. It is proposed to have.

  As a means for protecting against wear, for example, an oxide ceramic tube partially embedded together in a plastic base body during the manufacture of a finger-shaped yarn guide can be used as described in claim 7. This eliminates the need for an adhesive bond.

  However, instead of such a high wear-resistant oxide ceramic tube, a chromium-plated steel tube may be used as described in claim 8. Such chrome-plated steel pipes, which are relatively resistant to impact, are also embedded at least partially together in the base body, preferably by plastic injection molding.

  Furthermore, in an advantageous manner, according to claim 9, it is proposed that the wear-resistant protective means is additionally positioned by means of a plastic contact support member formed in a semicircular shape. This abutment support member is formed together during the plastic injection molding process. In other words, the abutting support member is a component of the base body and forms an additional fixing means for the wear-resistant protection means for the carbon fiber rod.

  The fixing / restraining element embedded in the base body by plastic injection molding as defined in claims 10 and 11 comprises a central bearing sleeve for the motor shaft of the drive device and a plurality of positioning means for positioning the fixing means. It has a sleeve-like attachment portion, and a plurality of stoppers and detents. One of the sleeve-like attachment portions has an internal thread. This female thread allows the contact means to be positioned precisely. This abutment means makes it easy to accurately position the finger-shaped yarn guide with respect to the motor shaft, while the retaining and detent prevents the fixing and restraining element from being inserted into the base of the finger-shaped yarn guide by plastic injection molding. It is ensured that the position is securely fixed in the body.

  Furthermore, as set forth in claim 12, the base body of the finger-shaped yarn guide comprises a sliding element. This sliding element preferably corresponds to a sliding guide arranged in the drive during the winding process. That is, when the finger-shaped yarn guide is vibrated during the winding process, the sliding element is applied to the corresponding sliding guide. This instantly stabilizes the finger yarn guide.

  In an advantageous manner, as claimed in claim 13, the sliding element is replaceably fixed to the base body of the finger-shaped yarn guide. That is, if necessary, the sliding element can be replaced with a new sliding element without problems.

  Further details of the invention can be seen from the embodiments described below with reference to the drawings.

FIG. 4 is a side view of one working unit of a textile machine for manufacturing a traverse winding package including a yarn traverse device having a finger-shaped yarn guide according to the present invention. 1 is a perspective front view of a yarn traverse device provided with a finger-shaped yarn guide according to the present invention. It is a front view of the finger-like yarn guide in the known prior art. It is a front view of the finger-shaped yarn guide which concerns on this invention. FIG. 4 is a plan view of a fixing / restraining element fixed in a finger-shaped yarn guide according to the present invention by plastic injection molding. It is a figure which shows the cross section VV of FIG. 5A. FIG. 5 is a plan view of a finger-shaped yarn guide according to the present invention in section VI-VI in FIG. 4.

  In the following, embodiments for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 1 schematically shows a side view of a textile machine 1 for manufacturing a traverse winding package, in this embodiment, one working unit 2 of a so-called “automatic winding winder”. As is well known, the automatic traverse winder 1 has a large number of work units 2 each having the same structure between both end frames (not shown). Since these work units 2 are also well-known and will not be described in detail, the spinning cup 3 manufactured in the ring spinning machine is rewound to form a large twill winding package 5. After completion of the traversing package 5, it is delivered to a machine-length traversing package transport device 7 by a service unit (not shown), for example, a traversing package changer, and then placed on the machine end side. Or they are transported to something similar.

  Furthermore, the automatic winding winder 1 often has a logistic device in the form of a bobbin / winding tube conveying system 6. In the bobbin / winding tube transfer system 6, the spinning cup 3 or the empty tube circulates on the transfer disk 11. Of the bobbin / winding tube transport system 6, FIG. 1 shows only a cup supply section 24, a storage section 25 that can be driven in reverse, a lateral transport section 26 that leads to the winding unit 2, and a winding pipe return section 27. .

  Furthermore, each winding unit 2 has various devices. These devices guarantee an orderly operation of the work unit 2. One of the different devices is, for example, a winding device indicated by reference numeral 4. The winding device 4 includes a package frame 8 that is movably supported around a turning shaft 12. In the present embodiment, the winding package 5 is placed on the surface of the package driving roller 9 during the winding process, and is interlocked by the package driving roller 9 via a frictional connection.

  However, in an alternative embodiment, the drive of the traversed package 5 is arranged directly in the package frame 8 or is incorporated in the package frame 8 and can be adjusted with a speed-adjustable drive device, preferably electronic Alternatively, it may be performed via a direct current commutable DC motor.

  The yarn 16 traversing the traversing package 5 during the winding process is traversed by the yarn traversing device 10. A yarn traversing device 10, which is only schematically shown in FIG. 1, has a finger-shaped yarn guide 13. The finger-shaped yarn guide 13 is driven by an electric motor type driving device 14 to reciprocate the yarn 16 between the both end faces of the traverse winding package 5, as is apparent from FIG. Further, as shown in FIG. 2, the driving device 14 has a motor shaft 33. A yarn guide 13 formed in a finger shape is disposed on the motor shaft 33 so as not to be relatively rotatable. The drive device 14 itself is connected via a control line 15 to a control device 28 specific to the work unit.

  Further, the work unit 2 includes a lower yarn sensor 40, a yarn clearer 22, a yarn cutting device (yarn cutter) 23 disposed in the range of the yarn clearer 22, and a yarn tension sensor 20. These constituent members 40, 22, 23, 20 are connected to the control unit 28 unique to the work unit via signal lines or control lines 41, 29, 30, 21. Each work unit 2 includes a suction nozzle 35, a so-called “gripper pipe 37”, and a pneumatic yarn splicing device 36 as usual.

  FIG. 2 is a perspective front view of the yarn traversing device 10 arranged in the work unit 2 of the textile machine 1 for manufacturing the traverse package. As illustrated, the work unit 2 includes a winding unit housing 31 having an input device 32. The take-up unit housing 31 contains a control unit 28 specific to the work unit. Further, the winding device 4 is positioned in the winding unit housing 31. The winding device 4 mainly includes a package frame 8 for holding the traverse package winding tube 18, a package driving roller 9, and a yarn traverse for reciprocating the yarn 16 traveling toward the traverse package 5. It consists of a swing device 10. This yarn traverse device 10 has a finger-shaped yarn guide 13 according to the present invention. As described above, the reversible drive device 14 for the finger-shaped yarn guide 13 is connected to the control device 28 unique to the work unit via the control line 15. The finger-shaped yarn guide 13 can be strictly controlled via the control device 28, so that, in particular, the yarn feed speed can be precisely adjusted during the winding process.

  FIG. 3 shows a yarn guide as known from the prior art. The known yarn guide 13 has a base body 17 formed in a finger shape or a pointer shape. The base body 17 is made of a magnesium die cast member. As can be seen, the base body 17 is tapered towards its free end, while the wide end of the finger-shaped yarn guide 13 has one mounting hole. Through this mounting hole, the finger-shaped yarn guide 13 can be connected to the motor shaft of an individual motor type driving device not shown in FIG. The base body 17 has two attachment holes at its free end on the narrow side. In each of the mounting holes, one bending elastic rod 38; 39 is fixed in position. The rods 38; 39 themselves are provided with ceramic yarn guide elements 42; 43, respectively. Advantageously, the bending elastic rods 38, 39 made of carbon fiber composite material, for example carbon, and the guide elements 42; 43 formed as a cylindrical hollow body made of ceramics are fixed via an adhesive joint. ing.

  FIG. 4 shows a finger-shaped yarn guide 13 according to the present invention, that is, a yarn guide provided with a base body 17 made of plastic. Carbon fiber rods 44 and 45 and fixing / restraining elements 19 are embedded in the base body 17 by injection molding of the material, that is, plastic. The carbon fiber rods 44 and 45 are formed to be significantly longer than the plastic base body 17 that accommodates the carbon fiber rods 44 and 45. That is, the carbon fiber rods 44 and 45 protrude beyond the base body 17 in the range of the free end on the narrow side of the base body 17 and the range in which the motor shaft is attached. The carbon fiber rods 44 and 45 are provided with wear-resistant protective means, for example, oxide ceramic tubes 42 and 43 or chrome-plated steel tubes, respectively, in the range (narrow side) extending beyond the base body 17. doing. This protective means is also embedded at least partly together in the base body 17, also by plastic injection molding, and is therefore securely fixed to the carbon fiber rods 44, 45. In combination with this, the abutting support members 46, 47 formed in a semicircular shape are particularly advantageous. The abutting support members 46 and 47 position, for example, oxide ceramic tubes 42 and 43 at their lower ends. The fixing / restraining element 19, which is also embedded in the base body 17 by injection molding of plastic, as is apparent from FIG. 5A in particular, is a central bearing sleeve 48 for the motor shaft 33 of the drive device 14 and fixing means (FIG. (Not shown) includes a plurality of sleeve-like attachment portions 49A, 49B, and 49C, and a plurality of retaining and rotation stoppers 50. The sleeve-like attachment portion 49 </ b> A has a female thread 54. The contact means 51 can be positioned by the female thread 54. Through this contact means 51, accurate positioning of the finger-shaped yarn guide 13 with respect to the motor shaft 33 can be realized. That is, the sliding element 52 arranged in the base body 17 is arranged at a slight distance in front of the sliding guide 53 fixed to the driving device 14 and cooperates (interacts) with the sliding guide 53. The finger-shaped yarn guide 13 can be positioned by the abutment means 51 so as to attenuate vibrations that occur in some cases.

DESCRIPTION OF SYMBOLS 1 Automatic traverse winder 2 Winding unit 3 Spinning cup 4 Winding device 5 Traverse winding package 6 Bobbin and winding tube conveyance system 7 Traverse winding package conveyance device 8 Package frame 9 Package drive roller 10 Yarn traverse device 11 Conveying disk 12 Rotating shaft 13 Finger-shaped yarn guide 14 Drive unit 15 Control line 16 Yarn 17 Base body 18 Twill winding package 19 Fixed / restraint element 20 Yarn tension sensor 21 Control line 22 Yarn clearer 23 Yarn cutting device 24 Cup supply section 25 Storage section 26 Transverse conveying section 27 Winding pipe return section 28 Control device 29 Control line 30 Control line 31 Winding unit housing 32 Input device 33 Motor shaft 35 Suction nozzle 36 Yarn splicing device 37 Gripper tube 38 Rod 39 B 40 Lower thread sensor 41 Control line 42 Yarn guide element 43 Yarn guide element 44 Carbon fiber rod 45 Carbon fiber rod 46 Abutting support member 47 Abutting support member 48 Bearing sleeve 49A, 49B, 49C Attached portion 50 Retaining and rotating Stop 51 Contact means 52 Sliding element 53 Sliding guide 54 Female thread

Claims (13)

A finger-shaped yarn guide used in a yarn traversing device provided in a work unit of a textile machine for manufacturing a traversing package, wherein the finger-shaped yarn guide has an elongated base body, and the base body is The base body has a wear-resistant yarn guide element that is connectable to a reversible drive device through the mounting opening, and the yarn guide element is used during winding operation. A finger-shaped yarn guide (13) in which a yarn traveling toward the surface of a twill-wound package is reciprocated, and the finger-shaped yarn guide (13) is formed as a composite component, and is a base body (17 ), said finger-like yarn guide (13) is embedded in the base body (17) within the And Subodi (17) Carbon Fiber Rod (44, 45) extending beyond the length of the further and a fixed-restraining element (19),
A finger-shaped yarn guide for use in a yarn traversing device provided in a working unit of a textile machine for manufacturing a traverse winding package. The finger-shaped yarn guide according to claim 1, wherein the carbon fiber rod (44, 45) is formed as a solid rod. The finger-shaped yarn guide according to claim 1, wherein the carbon fiber rod (44, 45) is formed as a hollow rod. Finger-shaped yarn guide according to any one of the preceding claims, wherein the carbon fiber rod (44, 45) has a circular cross section. Finger-shaped yarn guide according to any one of the preceding claims, wherein the carbon fiber rod (44, 45) has an elliptical cross section. The carbon fiber rods (44, 45) comprises a base body and a respective wear resistance of the protective means to segment protruding beyond the (17) (42, 43) of claim 1, wherein the finger-like yarn guide . The abrasion resistance of the protective means (42, 43) comprises a base body (17) is a tube of oxide ceramics that are embedded in partially together in a finger-like yarn guide according to claim 6, wherein. The abrasion resistance of the protective means (42, 43) comprises a base body (17) is chromium-plated steel tube is partially embedded together in a finger-like yarn guide according to claim 6, wherein. The abrasion resistance of the protective means (42, 43) is adapted to be additionally positioned by abutting support member formed in a semi-circular of the base body (17) (46, 47), wherein Item 9. The finger-shaped yarn guide according to any one of Items 1 to 8. The fixing / restraining element (19) includes a central support sleeve (48) with respect to the motor shaft (33) of the driving device (14) and a plurality of sleeve-like attachment portions (49A, 49B, 49.) The finger-shaped yarn guide according to claim 1, comprising 49C) and a plurality of retaining and detents (50).   The finger-like shape according to claim 10, wherein the at least one sleeve-like attachment (49A) has a female thread (54) by which the contact means (51) can be positioned. Yarn guide. Said base body (17) is provided with a sliding element (52),該滑Ri element during the winding process, and corresponds to the sliding guide (53) disposed in the drive device (14) The finger-shaped yarn guide according to claim 1. It said sliding element (52) comprises finger-like yarn guide (13) is replaceably fixed position to the base body (17) of claim 12 finger-shaped yarn guide according.

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