DE1539712A1 - Color television deflection coil winding machine - Google Patents

Description

Description With color television picture tubes are to the electron beam to deflect horizontally or vertically, self-supporting preformed coils around the neck of the picture tube arranged.

So far, two methods are known by which such coils are produced will.

Both methods use a two-part mold in which the Wire is wound.

In one method, a wire guide moves horizontally, while the form stands still. Then the mold rotates 180 degrees. The wire guide then moves in the opposite direction in the horizontal, and the shape makes another 180 degree movement. If doing the necessary turns in this way are wrapped in the mold, the mold is removed from the machine and put the bobbin in a press.

The wire used for such coils is always thermoplastic Coating and is powered by a surge, i. H. by short circuit, heated. Simultaneously the coil is pressed into its final shape while tolerating the edges and be made plan.

After cooling down, the individual turns are glued together, so that the coil has become stable.

The process of wire heating and pressing is also called '' baking '' designated.

In another method, the mold rotates while the wire guide stands still.

At the ends of the mold halves, which are offset by 180 degrees to each other are arranged, there are guide surfaces that guide the wire into the mold.

The further steps are the same as in the first described Procedure.

The manufacture of a coil by either of these methods is extremely difficult Time expenditure connected.

The function of the color television deflection coil winder described below is explained on the basis of the drawing using an exemplary embodiment.

Figure 1 shows the arrangement of three sets of molds 1 in the positions A, B and C on a star turret 2. In picture 2 the three shapes 1 are in position A to C shown in viewing direction D in the plane.

A form 1 wound in position A is moved in direction E to position B pivoted.

At the beginning of the pivoting process, the wire guide 3 is in position F brought. The wire 4 slides between the clamping disks 5 of the wire clamping and contact device 6 where it is resiliently retained. At the end of the swiveling process an empty form 1 has reached position A.

The wire guide 3 is now brought into position G. The glides Wire 4 into the wire clamping and cutting device 7 and through the slot 8 in the Plate 9, which carries a half-shape.

The wire clamping and cutting device 7 is in position in Figure 3 "Open" and shown in the "closed" position in Figure 4, it is always on plate 9 attached and consists mainly of a guide piece 10 in which a clamping and cutting piece 11 and a locking piece 12 slide.

When the wire 4 slides into the wire clamping and cutting device 7, A lever 13 mounted in the guide piece 10 holds the clamping and cutting piece 11 via two pins 14 in the "open" position.

Another lever arm 15, which is mounted at point 16 in the star turret 2 is, holds the plate 9, which carry the molds 1, locked in the locking point 17.

This locking is released via the control cam 18, so that the winding process can begin.

The mold 1 is now driven in position A and rotates at the point 19 towards H.

When the rotary movement begins, the wire clamping and cutting device occurs immediately 7 in function.

As the wire clamping and cutting device 7 moves in direction H, the lever 13 is pivoted by the fixed bolt 20 in the pivot point 21.

The lever 13 overcomes the resilient locking piece 12 and is at the same time the clamping and cutting piece 11 free, which the wire 4 is now with the clamping surface 22 is clamped and severed by the cutting edges 23.

Now the required number of turns is wound into shape 1, with the wire 4 slides over the guide surfaces 24 of the mold halves.

After completion of the winding process, the form 1 is again on the Lever arm 15 locked.

The star turret 2 is now moved 120 degrees in direction E, and the wrapped shape 1 is in position B.

During the pivoting movement, the wire end that is now free is how described above, between the clamping disks 5 of the wire clamping and contact device 6 arrives.

The other end of the wire is in the wire clamping and cutting device 7 on earth.

Over the wire end in the clamping disks 5, which are guided on the insulated Axis 25 are attached, the coil lying in the form 1 now receives a current surge for baking.

Now a pressing tool 26 is guided into the mold 1 so far that the Coil is tolerated.

After pressing, the coil is cooled by a stream of air that dies The finished bobbin in position B is now brought into position C. Here is a half of the mold extended in the axial direction and at the same time the wire ends in the wire clamping and Cutting device 7 and released in the clamping disks 5 via control cams, so that the finished coil fails.

Analogously, as described above, the color television deflection coil winding machine can also be carried out so that only two shapes are arranged on the star turret 2 are.

In this embodiment, the star turret 2 makes two rotary movements 180 degrees after two positions, with a mold 1 winding in one position is, during all other operations, the baking, pressing, cooling and ejecting of the finished coil from the second form 1, go ahead in the second position.

Furthermore, by arranging several sets of clamping disks 5 of the Wire clamping and contact device 6 and corresponding design of the wire guide 3 can be achieved that several, z. B. processed four wires simultaneously into a coil can be.

In the previously known methods, after winding the preformed coil the two-part mold removed from the machine. The operations that follow the winding are required, thereby taking long set-up times that are far lie above the pure winding time.

In our method, the arrangement of essentially two or three forms of the work flow on the preformed coil controlled so that the wire clamping, Wire cutting, baking, pressing> cooling and ejection in the winding time of the Form coil falls.

Since hardly any working time can be saved when winding preformed bobbins are, our process offers the greatest economic efficiency in the production of such Wash.

This is the main advantage of our method over previously known method.

Claims (4)

Claims 1. Color television deflection coil winding machine for fully automatic Manufacture of preformed coils for picture tubes, or similar coils without bobbins, characterized in that essentially two sets of molds (1) are arranged in relation to one another are that one or more wires are wrapped in a mold, whereby the mold rotates and the wire guide (3) remains stationary while in the second mold the wrapped turns are baked, pressed and cooled, and the finished Coil is ejected from the mold. 2. color television - deflection coils - winding machine according to claim 1, characterized characterized in that the operations of baking; Pressing, cooling and ejection are divided into two forms (1). 3. color television - deflection coils - winding machine according to claim 1, and 2, characterized in that wire clamping and cutting devices (7) to the circumferential forms (1) are arranged. 4. FarbferrLseh deflection coil winding machine according to claim 1 and a, characterized in that wire clamping and contact devices (6) wire ends clamp and make electrical contacts.