DE2115579C3 - Winding device - Google Patents

Description

The invention relates to a winding device for winding coils with a polygonal cross-section onto a core, with a wire or thread guide revolving on a circular path relative to the core.

Coils with a round cross-section are now wound at a very high rotational speed, with a wire or thread guide rotates coaxially to the main axis of the bobbin on a circular path. trouble however, if it applies, out-of-round coils result

to wrap at great speed. In this case too, the core or coil is taken from the wire guide circulate on a circular path, the result is a non-uniform withdrawal speed of the wire, which leads to strong inhibition forces. In order to these do not reach an impermissible value at which wire breaks are to be expected. must the Winding speed can be kept much lower than when winding round bobbins, depending on the shape of the bobbin Wash.

öo The irregularities during one revolution When winding non-circular coils, the wire is also guided inaccurately. To this To remedy deficiencies at least in individual cases, it is known from the German application document 1 514 553, a bobbin deviating from the cylindrical shape, which is finite along the entire circumference Radius of curvature has a uniform sign, with a corresponding concentric To give away guidance along which rollers run, which rotate the bobbin and align at any time with respect to the thread guide so that both the atiflaufwinkel of the wire on the bobbin as well as the distance between the contact point and the thread guide are kept essentially constant.

This known winding method firstly does not allow a high wind speed and is suitable generally not for winding bobbins with poly-

2 I 15579

cross-section. With these, the conditions are even more unfavorable than, for example, with elliptical-shaped bobbins, since the wire is not only exposed to particularly strong acceleration forces, but also hits violently on the flat cables of the polygonal cross-section, bounces back and thereby, as well as due to the cyclically non-uniform withdrawal speed between the thread guide and the bobbin get into transverse oscillation, which prevent one turn of the coil from being neatly placed next to the other. If this requirement is made, z. B. long when winding of relatively flat rectangular coils are beitet only half or third rotational speed gea ^r as during winding of round coils.

According to the invention, in order to solve the problem, reels with a polygonal cross section are now carried out at high speed suggested to wrap the circular Main circulation a cyclical, the Circular tap at least opposite the longest side booth the flattening of the core and / or the relative angular velocity between the wire guide and the wire guide at least in the angles in which the wire rests against the longest sides of the core Come! to superimpose a reducing additional movement.

With such a winding device, the extreme voltage peaks in the wire are eliminated and the wire becomes also not hit so hard against the flat sides of the core or coil. This in turn comes it does not belong to the "feared transverse oscillation" of the Wire, which now lies precisely with the predetermined helical pitch on the core. The rocking speed can be several times that on winding devices with rotating wire guides or coils can be achieved.

The invention is illustrated below with reference to diagrams and several in the drawing. Exemplary embodiments explained in more detail. Fs indicates

Fig. I is a schematic representation of the winding cycle when winding a flat rectangular coil with a wire guide rotating around a circular path.

F i y. 2 shows a representation of the wire withdrawal speed and axial acceleration as a function of the angle of rotation of the wire guide * rotating on the circular path according to FIG.

3 shows a schematic representation of the movement path of the wire guide when winding the same coil 'as shown in FIG. 1; in this case it is the Bewemingsbahn an ellipse,

Fig. 4 shows the speed control associated with Fig. 3 »Inij acceleration diagram according to FIG. 2,

Fig. 5 shows the trajectory of the wire guide a Winding-up winder when winding a core with a square cross-section,

Fig. 6 to 9 four different filing.shc.j- «, Piele of winding devices working according to the invention with a wire guide in axial section,

f ^r ig. 10 shows a winding device according to the invention with two wire guides operating at the same time.

Before going to the concrete implementation examples 6 to IO is entered into, let us first consider theirs Mode of action in comparison to the previously known rocking devices with a circumferential belt guide generally referring to FIGS. 1 to 5. Reference is first made to FIGS. 1 and 3 taken, a rectangular one should be in both fills elongated core 10 are wound. According to FIG. This is in a conventional manner from the thread guide circled. According to FIG. 3, however, the company moves

the guide on an elliptical orbit around the core. Ii two drawing figures are several successively with konstan tem time interval traversed one another's corresponding path points Al, Bl, Cl, Pl, Fl El unc or Al, Bl, Cl, Dl, El and Fl of Drahtfüh

«° rers stated. As specific positions of the last rcn also path points 51 and 71 or 52 and Tl are located. When the wire guide passes through the last mentioned Bahri points, the winding wire comes on the shorter or longer side of the

• 5 core 10 to the plant.

Already from a comparison of the wire lengths between the core IO and the wire guide in the various positions A 1 to ^F \ and.-12 to Fl of Fig. I hzw. 3 it can be seen that

the increase in length of the wire between A \ and Bl, Bl and Cl, Cl and Dl u ^ w., i.e. the change in length per unit of time compared to the change in length between positions Al and Bl, Bl and Cl, Cl and Dl etc. according to Fig .3 is very much uneven .Moderate. This is due, on the one hand, to the fact that the curve shape here is a circle, there an ellipse - even with a constant path speed, also in the case of an ellipse, the speed component of the thread guide in the direction of the normal to the longitudinal axis of the core 10 in the circular path at point 7Ί is much greater than at the point Tl of the ellipse of FIG. 3. While, for example, the Ahzugsgeschwindigkeit of the wire to the value approaches short of the point 71 is zero, it is approximated immediately after the installation of the wire on the longitudinal side of the core 10, that is behind the point Tl equal to the Line speed of the wire guide. From Fig. 3 b! on the other hand, it can be seen that the speed component in the direction of the longitudinal axis of the core 10 at point Tl is still quite considerable, which means that the wire speed immediately before the wire rests on the long side of the core, so that the plant of the wire on the core is not as suddenly noticeable as in the case of the circular path according to FIG. 1.

There is another one. The technical realization of the elliptical path by means of superimposed circular Movements, as shown in Fig. 6 to 10 on the basis of several specific examples, leads

in addition that with the ellipse according to FIG. 3 and also with the approximately square trajectory according to F> g. 5 the tangentially measured path speed in the more strongly curved path areas is very much smaller than in the flattened areas, which essentially against the longitudinal sides of the core 10 against ühcrlicgcn. This comes Talsache figuratively in ilen different Bahnabstiindcn / 42bis Bl, Bl to Cl, Cl to Dl etc. expressed. This is the case with the winding device proposed according to the invention

Accordingly, not only the Gesrhwindigkeilskomponente in the direction normal to the longitudinal axis of the core f0 proportionally smaller in Bahnpunkl Tl than that of the circular path, but also the absolute value of the speed is at Tl, despite the same number of revolutions smaller than TX.

The speed and acceleration ratiosc of the two opposite winding

VorrichltlüCn mil Icrrkörmiii.'r m. "I« Hi « '■' ■ - '

S '

Orbits of the filamentous animal are in Ii μ. 2 and 4 also shown. The diagrams speak for themselves. What is crucial in the invention is that the sudden jump in acceleration at 7Ί according to FIG. 2 is reduced. In the ellipse spell according to FIG. 4, the acceleration jump at .V2 is greater than at point .Vl of the circular path, but the sudden changes in acceleration are reduced to approximately _{Vj to V 4 of} the maximum value at T1 of the circular path. Since the acceleration forces are so much smaller in the motion path proposed here, winding can be carried out at a correspondingly higher number of revolutions.

By Fig. 5 it should be shown that the Apply the idea of the invention to the winding of cores with a square cross-section IaIlI. The devices according to FIGS. 6 to 10 described below are suitable for both production an elliptical, triangular, square, pentagonal or hexagonal trajectory of the Wire guide. Which path is created is only determined by the speed ratio of the superimposed Speeds and the eccentric lengths. A comparison of FIGS. 3 and 5 shows, however, that the The most unfavorable winding ratios are present with long, flat coils. Coils with a hexagonal cross-section For example, for the sake of simplicity, one will use circular wire guides again wind, although in this case too, in principle, the winding is done with a cocking valve that is approximated to one another Wire guides guided with rounded corners allow more favorable acceleration ratios.

As FIG. 5 also shows, it can be useful to define the main axes of the movement path of the thread guide to lay slightly rotated at an angle to the corresponding main axes of the winding core, so that the longitudinal ropes of the railway are not parallel to the longitudinal ropes of the core. It should be the railway point T3 or S3 in the most favorable area of the movement tap the wire guide must be jerked.

A first concrete exemplary embodiment of a winding device according to the invention is shown in FIG. 6 shown. A shaft 14 is connected by any type of rotary drive (not shown) constant speed driven. The core 10 is rotationally fixed at the front end of the shaft 14 or 12 attached. The shaft 14 is mounted on a housing 20 by means of bearing bushes 16 and 18, in which Another shaft 26 is mounted in parallel in bearing bushes 22 and 24.

The shaft 26 carries at the front end non-rotatably and eccentrically a wire guide 28, to which the Winding wire 30 is passed through the hollow shaft 26. The wire inlet and outlet of the shaft 26 is protected by hard inserts 32 and 34. The same applies to the wire outlet opening of the Drahtf Its 28, on which a hardened insert 36 is also provided. The wire wrapping between the Shaft 26 and the wire guide 28 take place via a roller 38 mounted on the latter.

The drive of the shaft 26 with the wire guide 28 takes place from the shaft 14 via gears 40 and 40 42 and a toothed belt connecting them 44. To with reference to a flat, elongated coil core To generate an elliptical orbit of the wire guide 28, the number of teeth behaves Gears 40 and 42 like 2: 1. The relative angle of rotation of the Shafts 14 and 26 is chosen so that the wire guide 28 is each in the highest Position if the longitudinal axis of the core 10 stands vertically. Has tier plunger core triangular oilci square cross-section, the speed ratio of shafts 14 and 26 must be I: 3 or I: 4.

The winding foreshoe takes place in the case of the

for example according to FIG. (■> by axial displacement of the shaft 14 with your gear 40 permitting the axial displacement by a spring-Niilvcr

ίο binding drchfesi is connected. During the Wik kelns of a coil are normally applied to the core lOlv.w. 12 several layers of wire applied, including the shaft 14 is shifted back and forth several times.

In the exemplary embodiment according to FIG. 7 are those Individual parts, which match the exemplary embodiment according to FIG. (1, with the same Provided with reference numerals. The rotary drive comes from a suitable drive motor on a shaft 46, which by means of a bearing bush 48 in a (ie house 50 is stored. Rotary connected sits at the front end of the shaft 46 an arm 52, the one further shaft 54 carries. The wire guide 28 is attached to this in a rotationally fixed manner.

The rotary drive of the shaft 54 about its central axis

»5 is by means of two gears 56 and 58 as well as one the toothed belt 60 connecting them causes the gear 56 to be non-rotatable by means of screws 62 on the housing 50 is attached and the gear 58 is seated non-rotatably on the shaft 54. The winding wire is going through the hollow shaft 46. a passage opening 64 in the boom 52, via a roller 66, through the hollow shaft 54 and fed via the roller 38 to the outlet opening 36 of the wire guide 28. The winding advance takes place by axial displacement of the core 10 or 12 carried on an arm 67, for which either the Arm 67 can be slid along one or more guide rods 68, or arm 67 mil the guide rods 68 is axially fixed and the latter are displaced.

For the choice of the gear ratio between the gears 56 and 58 and the definition What has been said above in connection with FIG. 6 applies to the angle of rotation position. Between the gear 56 and a further bearing bush 70 can be provided for the shaft 46.

The embodiment of FIG. 8 works in principle in the same way as that of FIG. 7. A means Bearing bushes 72 and 74 in a housing "'fi mounted shaft 78 is driven to rotate. At the front end it carries a boom 80 in a rotationally fixed manner, in which a shaft 84 is rotatably mounted in a bearing bush 82. The latter sits non-rotatably a gear 86, on which the wire guide is eccentric 28 starts. When the shaft 78 rotates, the gear 86 rolls on internal teeth 88 on the housing 76 from. whereby the shaft 84 is set in rotation about its longitudinal axis. The wire feed takes place again through shafts 78 and 84, this time via a roller 90 mounted in the latter. The boom 80 is balanced by a counterweight 92.

As in the embodiments described above, the shape of the path of movement of the wire guide 28 depends on the ratio of Numbers of teeth of the internal toothing 88 and of the gear wheel 86. An ellipse results from a ratio from 2: 1.

The winding advance is the same as in the execution according to FIG. 7 accomplished.

With animal winding device according to Hg. 9 a, 9 b is for a rotary drive, not shown, cine by means of Bearing bushes 94 and 96 gelatertc in a housing 98 Shaft 100 driven. On the IUuIe there is an eccentric disk 102 with fin mit • dimerstifl 104, which in an elongated hole 106 one #ei, coil core 10 or 12 supporting slide 108 fingertips. The slide 108 slides through the drive Liber ile driver lift 104 in a guide 110 of the housing 98 cyclically up and down.

The rotary movement of the shaft 100 is spanned by the gears 40 and 42 and between them Toothed belt 44 on a shaft 116 mounted in housing 98 by means of bearing bushes 112 and 114 transfer. The wire guide 28 is rotatably located on the front linden tree. The wire feed runs only through the shaft 116 and over a roller 118 mounted at its front end. The shaft 116 is axially in the bearing bushes for the winding advance 112, 114 and the gear 42 shifted. Between the latter and the shaft 116 exists a tongue and groove connection.

With the winding device according to Fig. 9a, 9b can the wire guide 28 can only be guided on an elliptical cock, not also on a z. B. triangular or square. The transmission ratio between the gears 40 and 42 is 1: 1. The angle of rotation is set so that the wire guide 28 is in its uppermost position when the slide 108 with the core 10 is at the very bottom.

Q: Sometimes there should also be coils with two single windings next to each other, with - 5 the connection ends of the wire are each outside should. The winding device shown in FIG. 10 is used to produce such coils.

In principle, it corresponds exactly to the design according to FIG. 6, with the difference that two shafts 26a and 26 /) driven by the same toothed belt 44 are provided and the winding feed is not provided by the shaft 14 carrying the core 10 or 12, but by the shafts 26o and 28 carrying the thread guides 26 / j is executed. Through the wire guides 28, two coils are wound simultaneously but independently of one another in two chambers 122 and 124 on the core 10 and 12, respectively, next to one another by two separate winding wires. The shafts 26a and 26Λ are thereby opposite ao moved in the axial direction, for which is used in the example case about a fixed pivot point 126 mechanically back and forth pivotably driven two-armed lever 128, which at the rear end of the shafts 26a, 26b disposed dogs 130, "130 / ) gripped like pliers.
In detail, differing from Fig. 6, the gear 40 is axially fixed on the shaft 14, while between the gear wheels 42a and 42 /) and the shafts 26a and 26fc there is a tongue-and-groove connection which permits the axial displacement of the shafts.

For this purpose 10 sheets of drawings

409 642/151

Claims (11)

Claims: . I. Winding device for winding bobbins with a polygonal cross-section on a core, with a wire or thread guide revolving on a circular path relative to the core, characterized in that the main circular motion is a cyclical, the circular path at least opposite the longest side edges of the core (10, 42 ) flattening and / or the relative angular speed between core and wire guide (28,36) is superimposed at least in the angular ranges in which the wire comes to rest on the longest sides of the core, reducing additional movement. 2. Apparatus according to claim 1, characterized in that the additional movement consists of a rectilinear back and forth movement of the core (10) and / or the bearing (bearing bushes 112, 114, shaft 116) of the rotating wire guide (28). 3. Apparatus according to claim 1, characterized in that when the wire guide is rotating (28) the additional movement from a reciprocating rotating or pivoting movement of the Core (10, 12). 4. Apparatus according to claim 1, characterized in that with the rotating core (10. 12) the additional movement from an eccentric, crooked movement of the to its axis of rotation Wire guide (28) looked at: the speed of rotation of the the latter is an integer multiple of the speed of the core. 5. Apparatus according to claim 1, characterized in that that with the core (10, 12) at a standstill, the wire guide (28) about a first axis (Axis of shaft 54) rotates, which in turn rotates around a second axis (axis of shaft 46), wherein the speed of the first rotary movement is an integer multiple of the speed of the second Rotational movement. 6. Apparatus according to claim 5, characterized in that for generating the first Rotary movement a non-rotatably with the wire guide (28) rotating to the first axis (shaft 54) coaxial gear (58) is used, which via toothed belt (60), chain or the like. with a standing still to the second axis (shaft 46) coaxial gear (56) is connected. 7. Apparatus according to claim 5, characterized in that for generating the first Rotary movement is used by a gearwheel (86) which is non-rotatably connected to the wire guide (28) and which with meshes with a stationary internal toothing (88). 8. The device according to claim 4, characterized in that several simultaneously to be bewikkclnde cores (10, 12) or core chambers (122, 124) rotate together and a wire guide (28) is provided for each core or each core chamber, the wire guides one have a common rotary and feed drive (toothed belt 44 or lever 128) . 9. Apparatus according to claim 8, characterized in that for winding a core with two chambers (122, 124), the coil ends of which should each be axially outside, the wire guides (2K) are simultaneously moved in opposite directions by a common feed drive (lever 128). H). Device according to one or more of the preceding claims, characterized in that daü with a narrow rectangular core 110) the movement path of the wire guide (28) is an ellipse relative to the core, the longer major axis of which is essentially on the longitudinal axis of the core cross section. 11. Device according to one or more of the preceding claims 1 to 9, characterized in that when triangular in cross-section or square core, the path of movement of the wire guide (28) relative to the core (12) substantially is a triangle or a square with rounded corners. with the Hnrintarhsen im essentially lie on the main axes of the core cross-section. i 2. Device according to claim K) or 1!, characterized characterized in that the associated main axes of the core cross-section and that of the wire guide's path of movement (28) enclosed geometric shape include an acute angle.