DE2739046A1 - DEVICE AND METHOD FOR WINDING A STRING OF STRAND ON A SPOOL HEAD - Google Patents

Description

DR.-ING. OIPL.-ΙΝβ.Μ. SC OIPl.-PHYS OR. OIPL.-PHYS. HÖGER - LEGAL RIGHTS -GRiRSSBACH - HAECKER PATENT LAWYERS IN SLUTTGHBT

A 42 415 m Applicant: Owens-Corning Fiberglas

u-163 Corporation

August 17, 1977 Toledo, Ohio 43659 DSA

description

Device and method for winding a strand of thread onto a winding head

The invention relates to a method for winding a strand of thread onto a winding head, in which the strand is in front the winding head with a transverse guide and in front of the transverse guide with a guide element such that the paths of the Strand between the guide element and the transverse guide on the one hand and the transverse guide and the winding head on the other Include an angle between you on the transverse guide.

The invention also relates to a device for carrying out the method with a winding head on which the strand is wound up in the form of a bobbin, with a transverse guide in front of the winding head and with a guide element in front of this transverse guide, which are arranged in such a way that the strand from the guide element to the transverse guide has a first and from the transverse guide to the winding head a second path section runs through, the two path sections on the transverse guide one Include angles between you.

In particular, the invention relates to the formation of a wrap package made of strands wound onto a rotating drum. The strands can consist of glass threads or contain threads of other materials, such as other minerals or synthetic resins.

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When collecting strands, it is common to use rotating drums or spooling heads on which the strands are shaped be wound up by packs. It has been found to be beneficial to use a transverse guide to pull the strands parallel to the axis of rotation of the winding head back and forth, so that they lie on the winding head in the form of a helix and not in the form of circular positions perpendicular to the axis of rotation. The helical winding prevents Glue adjacent layers of the wound strand together if the strand is still wet due to the application of a protective coating. That disclosed in U.S. Patent 2,391,870 (Beach) has been found to be very effective. With it, strands with high Speeds are wound up.

Sometimes it is desirable to divide a strand into a plurality of thread bundles and to divide the strand in this Wind the form onto the winding head to prevent adjacent bundles of threads from sticking together. From one Winding package of a strand divided in this way, one strand can be removed from a number of not together glued bundles of threads. A pack with a divided strand is advantageous, for example, when shredding the strand, because there you need a thread bundle with a certain diameter or with a number of threads that is less is than the number of threads in the total strand.

As a result, strands usually become bundles of threads during winding divided into a comb-like strand divider

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used to keep the different bundles apart, by it provides a separate guide path for each bundle. In some strand splitting processes, two or more strand dividers are used used to divide the continuous strand into bundles. For example, in a line with 200 Threads two 5-strand dividers are used, which divide the strand into ten bundles, each of which has about ten threads includes. The strand is usually divided into bundles by separating the thread groups from one another by hand Introduces guide ways of the strand divider. The distance of the strand divider from the strand transverse guide is, for example by the speed of the cross movement of the strand> the construction of the spiral wire on the cross guide and determined by the number of bundles into which the strand is divided is.

For winding strands, transverse guides are known which be moved back and forth parallel to the axis of rotation of the bobbin. This oscillating movement allows the recording longer and larger wrap packs. A transverse guide of the usual type can, for example, have an oscillation period of 10 seconds. Operated continuously.

It has also already been envisaged to move the guide element back and forth in phase with the transverse guide. When winding up of a divided strand, the guide element can be a strand divider. Other strand guides can also be used. For example, it is possible to use a funnel-shaped guide element.

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One designed as a strand divider, in phase with the transverse guide reciprocating guide member is described, for example, in U.S. Patent 2,901,455 (Carlisle). at In this device, the guide element does not move in a straight line, but along an arc. Through this there are different distances between the guide element and the transverse guide, which are along a straight line is moved back and forth.

A guide element moved in phase with the transverse guide is also described in U.S. Patent 3,041,664 (Green). Included however, no strand divider is used as the guide element, as is used to produce a package from divided strands is needed. In this device, there is also no provision for moving the guide element away from the bobbin, as a result of which a more effective interaction of the strand and the guide element would be achievable.

When a reciprocating guide member is used in winding strands to guide the divided strand to feed a reciprocating transverse guide, then the guide element, transverse guide and winding head are usually of this type arranged that the strand path changes its direction on the transverse guide. Guide element, transverse guide and the winding point in other words, on the pack are not in a straight line. The sections of the path traversed by the strand follow the lateral guide at an angle. This angle on the cross guide is desirable because it creates a good contact between strand and cross guide, which for a

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good management of the strand is necessary.

However, the contact between the strand and the transverse guide must not lead to excessive tensile forces or arbitrarily variable tensile forces acting on the strand. Irregularities in the strand tension namely lead to a puckering of the threads or to a so-called "bird's nest effect ¹¹ " when the strand is removed from the pack again.

So far, when winding strands with the aid of a transverse guide and a guide element oscillating in phase therewith, difficulties arose due to different tensions during winding. As the strand is wound onto the pack, the diameter of the pack increases. This changes the angle of the path sections traversed by the strand in front of and behind the transverse guide. As a result of this angular change in the path sections, the strand wraps around the transverse guide over a different angular range. As a result, the tensile forces exerted on the strand change. Different tensile forces result in different strand tensions and the problems described when removing the strand from the pack.

The invention is based on the object of the occurrence of different Avoid tension forces and thus the occurrence of different tensions and a method and specify a device with which the magnitude of these voltages can be adjusted.

This object is achieved according to the invention in a method of

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The type described at the outset is solved by moving the guide element during the winding process in such a way that that the projection angle of the angle between the strand paths in front of the transverse guide and behind it on a perpendicular is controllable on the axis of rotation of the winding head plane.

As a result of the controllable change in the projection angle, the wrapping of the strand around the transverse guide can also be controlled; As a result, the tension of the wound thread can be adjusted by adjusting the guide element.

It is advantageous if the guide element is moved in such a way that the projection angle during the entire winding process in remains essentially constant.

In a device of the type described at the outset, the object is achieved according to the invention in that a drive is provided for the guide element, which moves it in such a way that the projection angle of the angle between the two pieces of travel can be controlled on a plane perpendicular to the axis of rotation of the winding head.

Further advantageous refinements of the invention are the subject matter the subclaims and laid down in these.

The following description of preferred embodiments of the invention is used in conjunction with the drawing of FIG further explanation. Show it:

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Fig. 1 is a schematic front view of a Glasfadenauf winding device;

Fig. 2 is a plan view of a strand divider;

Fig. 3 is a schematic side view of the winding device of FIG. 1 at the beginning of the winding process and

FIG. 4 is a view similar to FIG. 3 at the end of the winding process.

In the following the inventive method and the device according to the invention explained on a device for producing and for winding up glass fibers. Of the The fiberglass strand is divided into a large number of thread bundles. However, the invention is not to use in the case of glass fibers, but can also be used with other winding devices.

1 shows a glass melter or forehearth 1 which contains a supply of molten glass 12. The bottom part of the forehearth is designed as a nozzle 16 with a plurality of Nozzle openings 20 are formed, through which glass streams exit, from which a strand of thread 24 is drawn. the The nozzle can have any number of nozzle openings. Before the threads of the strand are wound onto a winding head they can walk past a sizing applicator 40 which applies a protective sizing to them.

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The strand is drawn off the nozzle and wound onto a winding head 28 driven by a drive motor 32. At the A winding package 36 is formed when the strand is wound onto the winding head. The strand can pass through a first strand divider 44 are separated into thread bundles 48. The strand essentially remains during the entire winding process divided into the thread bundles 48.

Before reaching the winding head, the strand runs past a traversing arrangement or a transverse guide 52, which pushes the strand back and forth in the direction of the longitudinal axis of the winding head and thereby creating a helical winding pattern on the winding package. The cross guide 52 is on a cross guide shaft 56 attached, which is driven by a motor 60. The motor 60 also moves the traverse guide in horizontal direction, as indicated by the double arrow in FIG. The transverse guide is therefore parallel to the axis of rotation of the winding head moved back and forth. This back and forth movement allows you to open longer and larger packages the winding head. '.

A second strand divider 64 is arranged next to the transverse guide, so that the transverse guide between the winding head on the one hand and the second splitter on the other hand. The second strand divider acts as an additional strand division and as a guide. It maintains the division of the bundle, which is necessary for winding the bundle onto the winding head in a split state is necessary. The shape of a preferred embodiment of this second strand divider is shown in FIG. in the

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However, other configurations of strand dividers can also be used within the scope of the invention.

The second strand divider is held on a shaft 68 and can with it parallel to the direction of movement of the transverse guide be moved back and forth. A dual purpose or dual motor 72 provides the drive for reciprocating the second Strand divider and the associated shaft. A control circuit 76 supplies the motors 60 and 72 with identical signals, so that the reciprocation of the cross guide and the reciprocation of the second splitter are in phase.

The motor 72 and the second strand divider mounted on it are mounted on rollers 78 and thereby along the displacement path 82 displaceable (Figs. 3 and 4). In response to a signal from the control circuit 76, the motor moves the rollers and thereby shifts itself and the second strand divider along the displacement path.

In another embodiment, it can be provided that the motor has a (not shown in the drawing) Drives the cam disk, which in turn moves the second strand divider back and forth. The motor 72 can be a (in the drawing not shown) have clutch which is actuated in response to the corresponding signal from the control circuit and a Allows the rollers to be driven. The control circuit may include a timer and may be programmed to do the Clutch supplies signals at predetermined time intervals, the time intervals of a certain increase in the winding

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the packing diameter. By indenting the Coupling, the double motor and the attached second strand splitter are driven so that the angle cc, the meaning of which is explained below changes.

As can be seen from FIGS. 3 and 4, the second strand divider, the transverse guide and the entry point of the strand on the winding package are not on a straight line, so that the Strand path on the transverse guide is deflected by an angle oC learns. If in the following the angle © c is mentioned, then the projection angle of the angle between the Strand path from the strand guide to the transverse guide and the strand path from the transverse guide to the lap package in the vertical Understood on the axis of rotation of the coil head standing plane. If neither the strand transverse guide nor move the second splitter, then the angle ος in the smaller the mass, in which the diameter of the winding package increases. This change in the angle oc becomes the angular Wrap around the transverse guide changed by the strand, so that the tension of the strand also changes, under which of these is wound onto the wrapping package. By changing the position of the dual motor and thus the angle oc of the second strand divider can be regulated will. This provides a way of controlling the tension of the strand when it is applied to the winding package.

The control circuit can be programmed in such a way that it operates the twin motor and the associated second strand splitter just moved enough that the angle <x, when winding remains constant. But you can also use the control circuit like this

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program that the angle pL assumes several discrete values during winding.

In the embodiment described, this is the angle the strand path determining leadership a strand divider. It goes without saying, however, that instead of the strand divider another guide can also be used.

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Claims (8)

DR.-ING. OIPL.-ΙΝβ. M. SC. DIPU-PHYS. DR. OIPI PMYS. HÖGER - LEGAL RIGHT - GRESSBACH - HAECKER PATE NTtNW Ϊ LTE IN STIITTQaRT A 42 415 m Applicant: Owens-Corning Fiberglas u - 163 - Corporation August 17, 1977 Toledo, Ohio 43659 USA Patent claims: 1. Method for winding a strand of thread onto one Spool head, in which the strand in front of the spool head with a cross guide and in front of the cross guide with a Guide element leads in such a way that the paths of the strand between the guide element and the transverse guide on the one hand and the transverse guide and the winding head on the other hand at the transverse guide an angle between them include, characterized in that the guide element during the winding process in such a way moved that the projection angle of the angle between the strand paths in front of the transverse guide and behind it can be controlled on a plane perpendicular to the axis of rotation of the winding head. 2. The method according to claim 1, characterized in that a strand divider is used as a guide element. 3. The method according to any one of claims 1 or 2, characterized in that the guide element is in such a way moves that the projection angle remains essentially constant during the entire winding process. 4. The method according to any one of the preceding claims, characterized in that the transverse guide and moves the guide element back and forth parallel to the winding head axis of rotation. 809812/0653 A 42 415 m u - 163 Aug. 17, 1977 - 2 - 2739045 5. Apparatus for performing the method of claims 1 to 4 with a winding head on which the strand is wound up in the form of a bobbin, with a transverse guide in front of the winding head and with a guide element in front of this transverse guide, which are arranged in such a way that the strand from the guide element to the transverse guide a first and a second path section from the transverse guide to the winding head runs through, the two path sections Include an angle between them on the transverse guide, characterized in that a drive (72) is provided for the guide element (64), which moves it in such a way that the projection angle (oO of the angle between the two pieces of travel to a perpendicular to the axis of rotation of the winding head (28) Level is controllable. 6. Apparatus according to claim 5, characterized in that the guide element is a strand divider (64). 7. Device according to one of claims 5 or 6, characterized in that the guide element (64) and the The transverse guide (52) can be pushed back and forth parallel to the axis of rotation of the coil head (28). 8. Device according to one of claims 5 to 7, characterized in that the drive (72) of the guide element (64) is designed such that it is the Keeps the projection angle («.) Constant during the entire winding process. 809812/0653