DE1763434C3 - Process for the production of pre-formed coils for armature windings of electrical machines, in particular starting motors and device for carrying out the process - Google Patents

Description

4. Apparatus according to claim 2 or 3, there- fore windings are wound and waste-free from one another characterized in that a separating device can be separated.

is provided, the one parallel to the axis of rotation 45. This object is achieved according to the invention Stencil (10) arranged whose winding loosens that the full length of the stencil on the stencil surface (13) to a certain extent at a distance overlapping wire ends lying next to one another in the axial direction Thumb (24) and also a device twists during the wrapping through a fore (30 to 37) to axially reciprocate the thrust device in the direction of the axis of rotation of the thumb, which moved the thumb each 50 template and before sliding off because according to one of the number of turns of the template to be wound by a separating device in Einkelnen Coils corresponding number of core coils with the desired number of turns the stencil so far axially displaced, are separated.

that the thumb grasps the inlet branch (48).

and the detected wire section can be wound continuously after at least 55 blone approximately one turn to the circumference and that the turns over their entire length in a pinch wheel (26). lie next to each other in the axial direction.

5. Device according to one of claims 2, a particularly simple and useful Aufbis4, characterized in that the inlet structure of a device for carrying out the invention (48) between 60 according to the invention that can be moved relative to one another arises when the Knives (61, 62) is passed through, the template thus formed a radially beyond the winding surface and with the drive of the stencil protruding side cheek, on which along the inlet (10) are coupled that they the coil ends strand of the coil wire on the winding surface (80 ") forming sections (80 ') of the coil wire runs, and the feed device at least one Strip the insulation. 65 axially displaceable in the side cheek

6. The device according to claim 5, characterized in that the plunger is supported, one end of which is axially indicates that the mechanism for actuating presses against the wire windings and the other the knife (61, 62) with the mechanism res front end move relative to the template-

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3 f 4

the control IS, which moves the plunger, to a ring segment-shaped cam track 16 of a funds cooperate. fixed cam 17 are pressed.

In a further embodiment of the device, the cam track 16 is concentric with the shaft 11 Separating device provided, which is arranged parallel to and extends over slightly more than Axis of rotation of the template arranged, the Wik- ί half of a circumference. It rises in the clock face a piece far with a distance overlapping clockwise direction and reaches at the point 18 (F ι g. 3) and also means for axial its greatest axial height, which is the same as Has to and fro movement of the thumb, which is the diameter of the coil edge to be processed Thumbs for one of the we, boys number tes. The plungers 14 are dimensioned so that their of the the number of cam tracks facing away from the end face with the wik changeover corresponding to the coil to be wound the template axially displaced so far, kelfläche 13 facing end face of the side wall that the thumb grasps the supply line and closes it off smoothly when the impact! not on that grasped wire section after at least approximately the cam track 16 covered area of the Nokeiner Rotation on the circumference of a squeeze disk 17 rests.

that brings us. The detected by the thumb Drahtab- i ₅ A to the shaft 11 coaxial with second shaft 20 is formed in ichnitt after separation by the two waste tight in the frame bearing bushes 21 and crushing wheel, the two terminal ends of the coil. The 22 rotatably and displaceably mounted and is thumb can easily be brought so close to the rotary drive means, not shown, simultaneously with the axis of the template that the shaft 11 and at the same speed as these viewers have exactly the length that she driven so late. She carries a crank web 23 with ter for Jen connection to a collector need. a winding thumb 24 at its outer end, which works The coil wire can therefore practically without waste and protrude in the axial direction beyond the template 10! so that material and a further one is provided with a cutting edge 25, the working of which ground the outer surface of a machined rotatable in the frame for the adaptation of the coil ends. _a5 mounted pinch wheel 26 is tangent. Between

For stripping the two facing end faces of the cure sections that form the coil ends of the coil wire is the supply strand belwange 23 and the template 10 is a free one between! mutually movable knives towards space 27, in which a gripper, not shown performs, which are designed in such a way and intervene periodically with the, while the finished wound Spu-Driv the template are coupled, that it detects the 30 len and transports them on. Remove insulation from the coil ends. This on the white 20 is a wheel disk 30 is attached,

The process takes place during the winding of the spool which carries a bearing block 31 in which a radial len off. so that it is not rotatably mounted on the roller 32 standing against the shaft 20 for any additional working time. says. The roller 32 lies on a concentric to the shaft

The mechanism for dewing the knives is 35 a circular cam track 34 extending expediently with the mechanism for the axial back looseness on the shaft 20 seated gear 35, and moving the thumb coupled. via an intermediate gear 36, which is only partially shown

In the drawing, an embodiment is one with the shaft 20 and in the same direction of rotation, each device to carry out the invention but only at half the speed as this ßen method shown, it shows 40 is driven. Between the wheel disk 30 and

F i g. 1 in a three-dimensional representation and the bearing bushing 22 is a helical spring 37 flared a winding device for two-wind form, which the roller 32 to the cam track 34 coils for armature windings of starting motors, presses. The helical spring 37 is supported here

F i g. 2 shows the view of the device according to the bearing bush 22 and the gear 35 aD of FIG Fig. 1, 45 bearing bush 21 from.

Fig. 3 is a sectional view along the line IH-III in the cam track 34 has a flat section

the Fig. 2, 41 (Fig.4) whose height is dimensioned so that the

4 shows a sectional view along the line IV-IV in the free end face 42 of the winding thumb 24 in FIG the fig. 2, plane of the side surface 43 of the pinch wheel 26

F i g. 5 on a larger scale and spatially a 50 is when the roller 32 runs over the section 41. Part of the device, a section connects to section 41

F i g. 6 and 7 are sectional views along the line that rises steadily and into a second plane VI-VI in FIG. 2 passes over at different winding section 45. This is dimensioned so that hung, the end face 42 of the winding thumb 24 at corresponding

Fig. 8 shows a section along the line VIII-VIII in 55 corresponding position of the roller 32 in the plane of the Seider Fi g. 2 in a further winding position, the surface 46 of the side cheek 12 is located. The distance F i g. 9 a removed from the template between the side surfaces 43 and 46 is larger than Coil with stripped wire ends. the diameter of the coil wire to be processed

The device has a winding template 10 th.

whose cross-sectional profile (FIGS. 6 to 8) of the shape 60. Finally, the cam track 34 also has one corresponds to the coils to be wound. The template fourth section 47, which like the section 44 a 10 is firmly connected to a shaft 11, which is rotatably mounted in the steady transition between the two flat shelves of the device and forms 41 and 45 with a section. With a full Drive motor is coupled. The template 10 has rotation of the wheel disk 30 relative to the a side cheek 12, which radially over the winding surface 65 gear 35 is thus the winding thumb 24 from 13 of the template protrudes. In the side cheek i2 of the position shown up to level 46 four plungers 14 axially displaceably mounted, which pushed and then back into the starting position returned by springs supported on the side cheek. Since the gear 35 with the hai-

ben speed of the shaft 20 rotates, the winding thumb 24 is at every second revolution of the Shafts 11 and 20 briefly advanced to the level 46, where he the inlet leg 48 of the coil wire recorded.

The coil wire runs from a supply carrier, not shown, over a pulley 50, which is loose rotatably seated on a shaft Sl. It is fully wrapped around the pulley once so that it unable to slide on the circumference of her coat. A helical spring 52 acts on the pulley, which is supported on a collar 53 of the axis 51 and the deflection roller against a fixed to the axis S1 connected brake disc 54 presses. Therefore, a certain torque is required to move the deflection roller 50 required, which keeps the Zulautstrang 48 under tension during winding. The pulley 50 is arranged opposite the template 10 so that the inlet line 48 on the side surface 46 of the side wall 12 runs along the winding surface 13.

Between the pulley 50 and the scraper; one 10 a device 60 is arranged for local stripping of the enamelled coil wire. This facility has two measuring points 61 and 62, between the semicircular cutting edges 63 (Fig. 5) of the Coil wire runs through it. The knives 61 and 62 sit on bases 64 and 65 on the frame of the device are mounted displaceably transversely to the coil wire. A working cylinder 66 contains two of one Pistons controlled by pressure medium, which are connected to the sockets 64 and 65 via double-armed levers 67 and 68 are connected. The pistons push the knives 61 and 62 together until their end faces 69 touch one another issue. The opening remaining between the cutting edges 63 corresponds to the line cross section of the coil wire to be processed.

The pressure medium is fed to the working cylinder 66 via lines 70 and 71 and a valve 72, which is electrically controlled by a switch 73. The switch 73 has a switch plunger 74, which with a cam 75 cooperates, which is fixedly connected to the gear 35 on the circumference Ring disk 76 is seated When the cam 75 hits the switch plunger 74, the valve 72 is opened, see above that pressure medium reaches the working cylinder 66, the piston of which presses the knives 61 and 62 against one another As soon as the cam 75 has passed the switch plunger 74, the valve 72 is back in its Initial position reset. The pistons also move under the influence of return means back to their original position and push the knives 61 and 62 apart again.

The device works in the following way:

At the start of work, the coil wire to be processed is approximately once around the template by hand 10 to loop. This causes the wire to become permanently twisted at the six corners of the template a positive connection between it and the stencil is established After switching on the The drive pulls the rotating template down the coil wire from the supply carrier. As a result of Braking effect of the deflection roller 50, the feed line 48 is stretched taut and runs on the side surface 46 along the side cheek 12 onto the winding surface 13 of the template. In the course of the winding rotation the coil wire resting on the winding surface 13 is moved axially through the plunger 14 Direction shifted steadily, so that it is unhindered in adjacent turns on the template run up and one turn after the other on the winding surface without interrupting the drive 13 of the stencil can be wound.

With the shaft 11, the shaft 20 is in drchung offset. The winding thumb 24 runs in the same direction of rotation and at the same speed like the stencil 10 um. At the latest during the second rotation, the winding thumb 24 in the axial direction under the feed line 48 advanced in such a way (FIG. 6) that the winding thumb detected wire section 80 and the two inclined sections 81 and 82 after a further rotation around 90 (Fig.7) an isosceles Form a triangle, the one above the outline of the rest

ao turns of the coil wire protrudes when the winding thumb 24 is in the position shown in FIG has reached, it is moved by the spring 37 into the position shown in FIG. 2 position shown pushed back, and the detected wire section 80 between the

ϊ5 cutting edge 25 of the winding thumb 24 and the pinch wheel 26 is pinched off. As the winding continues, the winding thumb 24 moves axially again out front so that it is again advanced under the coil wire.

When winding the gear 35 and the attached cam 75 at half the speed the template 10 rotated. The cam 75 switches here via the switch 73 and the valve 72 Means 60 for stripping the wire with every second revolution of the template 10. the Inlet strand 48 of the coil wire therefore has regularly recurring stripped wire sections 80 '(F i g- 8), the distance between which equals the sum of a normal winding length and the length of a is the winding leading over the winding thumb. The distance of the knives 61 and 62 from the axis of rotation the template 10 and the position of the cam 75 relative to the cam track 34 are chosen so that the stripped wire sections 80 'exactly at the points

of the wire sections 80 detected by the winding thumb lie.

In this way, individual coils consisting of two turns are created in an uninterrupted sequence 90 (F i g. 9), one behind the other in the axial direction

sit on the template and their connecting ends from the sections 81 and 82 and one each Half 80 "of the bare portions 80 'are formed. It should be noted that the portion 81 of each Single coil is connected to section 82 of the previously wound coil prior to disconnection, that is, two turn widths in front of each section 82 of the same individual coil

The plunger 14 move the individual coils 90 continuously in the axial direction of the template, so that a

Single coil after the other slides off the template and is gripped by a gripper that transports them on. The individual coils come on this way to the next workstation, where the connection ends 81 and 82 in the prescribed

Shape while they are already cut to the prescribed length.

1 sheet of drawings

Claims (3)

for axially reciprocating the thumb. Claims: (24) is coupled. 1. Process for the production of preformed coils for armature windings of electrical machinery 5 nen, in particular of starting motors, in wel- The invention relates to a method for chem the coil wire under the influence of a hemming of Fonnspulen for armature windings Retention force from a supply carrier withdrawn from electrical machines, in particular from Angen and to a rotary motor corresponding to the coil shape, in which the coil wire is below circumferentially driven template in side by side io the influence of a retaining force from one lying in front of one another Windings wound up and the data carrier withdrawn and placed on one of the coil forms if there is a permanent jam in several places, insert the corresponding rotating stencil in daduich marked that the wound on adjacent turns of the stencil in its full length in the axial direction and permanently deformed in several places Direction of adjacent wire windings 15 is. gene during winding by a feed such a method and a device for device in the direction of the axis of rotation of the Scha- Implementation of this procedure is from the USA.-blone moved and known from the patent 1,995,916 before it slipped. With this well-known template A separating device in the single winding machine turns coils from two wires individual coils with the desired number of turns are separated on a rotating template will. celt and with complicated stencils in a special 2. Device for carrying out the process brought into being. The windings are only on Rens according to claim 1, characterized in that the longitudinal side of the barrel coil is next to one another. Dardaß the template (10) one radially over the wik- over is the fastening of the wire ends in front kelfläche (13) protruding side cheek (12) 25 cumbersome to wind a new bobbin, because zuhat, must be bent along the supply line (48) of the next hook, with their Coil wire runs onto the winding surface, and with the help of the bobbin winder it is held on the form that the feed device at least one in The separation of the individual bobbins does not take place Side cheek (12) in the axial direction without slippage and the contact ends must be designed in one has mounted plunger (14), one of which 30 whose operation is stripped. Front end presses axially against the wire windings. Furthermore, US Pat. No. 3,346,021 and the other end of which is known relative to a winding machine, with which also Template (10) moving and here the Stö pre-formed coils are wound from two wires. the However, there are no turns of these preformed coils cooperates. 35 side by side. The preformed coils must therefore be in 3. Device according to claim 2, thereby being tied in an additional operation, indicates that the plunger (14) under the one The invention is based on the object a The flow of a spring (15) is a forehead process for the production of preformed coils for end against a concentric to the axis of rotation of the core windings of electrical machines, Template (10) arranged cam track (16) 40 with the preformed coils made of a wire, also with thick in the axial direction of different cam diameters, z. B. for armature windings from height presses. Starting motors, continuously in side by side