KR19980023413A - Changeable winding mold of deflection coil opening in cathode ray tube - Google Patents

Abstract

The present invention provides a winding mold whose position of the opening of the deflection coil of the cathode ray tube can be changed.

The winding mold of the upper winding mold and the lower winding mold for producing the saddle-shaped deflection coil is moved into the winding space part in one of the upper winding mold and the lower winding mold to form the predetermined opening. Reversing slide pins; A long hole in which a long side is formed in a direction in which a position of the opening is changeable in a mold of a position at which the slide pin is to be installed; And, it is inserted into the short side of the long hole, it is fixed to be movable in the long side direction, characterized in that it comprises a bushing for guiding the slide pin.

Accordingly, the structure of the deflection coil of the cathode ray tube can be changed by easily changing the position of the opening slide pins before and after the heat treatment by a simple structure and a simple position adjustment operation. Productivity, maintenance, and maintenance can be made easy.

Description

Changeable winding mold of deflection coil opening in cathode ray tube

The present invention relates to a winding mold of which the opening position of the deflection coil of the cathode ray tube can be changed. More particularly, the opening position of the deflection coil of the cathode ray tube capable of adjusting the opening position of the saddle type deflection coil for deflecting the electron beam of the cathode ray tube is changed. It relates to a possible winding mold.

In FIG. 1, a panel 12 having a fluorescent screen 20 formed on a rear surface of a face plate 18 and an electron gun 11 for forming electron beams 19a and 19b and emitting them toward the screen 20 are provided. The color cathode ray tube 10 includes a neck 14, a funnel 13 connecting the neck 14 and the panel 12, and a deflection yoke assembly 17 mounted to the neck-funnel connection portion. Shown.

The funnel 13 is formed with an inner conductive layer (not shown) in contact with the anode terminal 15. A shadow mask 16 having a plurality of apertures or slits 16a formed in a predetermined arrangement is detachably mounted to the panel 12 at a predetermined distance from the screen 20.

The deflection yoke assembly 17 typically has a horizontal deflection coil and a vertical deflection coil. The horizontal deflection coil forms a horizontal deflection magnetic field to horizontally deflect the motion paths of the electron beams 19a and 19b when a horizontal deflection current is applied, while the vertical deflection coil is applied when the vertical deflection coil is applied. A vertical deflection magnetic field is formed to vertically deflect the motion of the electron beams 19a and 19b.

By changing the deflection magnetic field by changing the current flowing through each deflection coil, electron beams 19a and 19b are scanned over the entire surface of the screen 22 to form a two-dimensional image on the cathode ray tube panel 12.

The winding methods of the horizontal and vertical deflection coils include a toroidal type winding method and a saddle type winding method. A saddle type coil is mainly used for a horizontal deflection coil, and a saddle type coil is also used for a vertical deflection coil. Toroidal type coils are also used.

FIG. 2 is a perspective view showing an example of a saddle-shaped horizontal deflection coil 33 of a pair of cathode ray tubes, in which the upper saddle-shaped horizontal deflection coil 33 is wound as shown in FIG. 33b allows current to flow in opposite directions, and similarly, the lower saddle-type horizontal deflection coils can also flow in opposite directions to the left and right coils, and the pair of saddle-type horizontal deflection coils When assembled up and down, the current flows to the left coil and the right coil in reverse, so that a predetermined unbiased magnetic field can be obtained.

In FIG. 2, the saddle-type horizontal deflection coil 33 is a form in which at least one strand of coils are wound in a continuous manner to form an end turn in addition to the side windings 33a and 33b that form a horizontal deflection magnetic field. It has a 33c and a rear winding part 33d, and the front opening part 33f and the rear opening part 33e are formed for predetermined | prescribed convergence characteristic.

3 is a cross-sectional view of the slide pin portion of the winding mold of the winding device for winding the saddle-shaped horizontal deflection coil 33 while forming these front and rear openings 33f and 33e. In FIG. 3, a plurality of coils are drawn out from a plurality of bobbins, and are supplied to a predetermined position by passing through a nozzle (not shown) through a guide roller and a tension roller. When the nozzle is moved to the left and right and up and down to wind the coil, one end of the coil is first fixed to the pin, and when the nozzle is moved to the coil supply position, the upper and lower winding molds 31 and 32 engaged by the coupling part 33 are moved. By rotating, the coil is wound along the coil inlet 34 to the winding space 40 having a predetermined shape between the molds. In this way, when the winding is completed, the other end of the coil is cut by the connection end forming means (not shown) and the coating layer is removed to form the predetermined first and second connection ends together with one end of the coil described above. By passing a current through the coated first and second connection ends to maintain the wound shape, the bond layer, which is the outermost layer of the coil, is melted, bonded and cooled by resistance heat. After cooling in this way, the manufacture of the deflection coil is completed by unloading the winding deflection coil by releasing the coupling of the upper and lower winding molds 31 and 32.

As described above, the horizontal deflection coil 30 in which the winding is performed is provided with movable slide pins in the winding mold to form front and rear openings 33f and 33e for satisfying convergence. In FIG. 3, the slide pin 41 is in the state of being retracted by the return cylinder 46 and the return guide 47 at the beginning of the winding, and then the forward air cylinder 43 in the middle of the winding stage. And the coil that is wound by advancing by the piston rod 44 and inserted into the pinhole 48 is no longer wound inside the position of the slide pin 41 shown by the dashed line of the winding space portion 40. Thus, the above-described openings 30f and 30e are formed.

However, in this winding method, since the length of the winding is different depending on the constant circumferential angle and the axial direction, it is difficult to obtain the coil density according to the predetermined design value only by the mold rotating at a constant rotational speed, and the uniformity of the winding is ensured. Furthermore, the product characteristics of the saddle-type horizontal deflection coil 30 are also uneven due to the change of the winding according to the temperature, the slip property of the coil, and the uneven tension applied to the coil during winding. There is such a problem. The positions of the openings 30f and 30e of the saddle-shaped horizontal deflection coil 30 not only need to be changed in position as expected in the design, but also are not easy to manufacture according to a predetermined design value during manufacturing. It is even more difficult when the mold is heat treated.

As described above, the bushing 42 is press-fitted into the lower winding mold 32 so that the position of the slide pin 41 can be changed, and the position is changed to the position of the slide pin 41 'shown by the double-dotted line. In this case, the bushings 42 are removed and the new bushings 42 'whose position is changed are press-fitted and fixed. However, this method also requires not only reworking the new bushings, but also after the heat treatment of the mold. There is a problem that is difficult.

Therefore, the present invention, the present invention for solving the above-described problems, by changing the position of the opening of the deflection coil of the cathode ray tube by easily changing the position of the opening slide pins before and after heat treatment in a simple structure and simple operation. The object is to provide a winding mold that can be used.

1 is an axial partial cross-sectional plan view showing a schematic structure of a color cathode ray tube;

2 is a perspective view showing an example of a saddle type deflection coil of a cathode ray tube;

3 is a cross-sectional view schematically showing the configuration of the slide pin portion of the winding mold of the saddle-shaped deflection coil of the conventional cathode ray tube;

4 is a partial view seen from the direction of the arrow 4 in FIG.

Figure 5 is a cross-sectional view schematically showing the configuration of the slide pin portion of the device of the winding mold in the present invention,

FIG. 6 is a partial view in the direction of arrow 6 in FIG. 5;

* Description of the symbols for the main parts of the drawings *

10 cathode ray tube 11 electron gun

12 Panel 13 Funnel

14: neck 15: positive terminal

16: shadow mask 17: deflection yoke assembly

18: face plate 19a, 19b: electron beam

20 screen 30 saddle type deflection coil

31: upper winding mold 32: lower winding mold

33: coupling portion 34: coil inlet

40: winding space portion 41, 51: slide pin

42, 52: bushing 43, 53: air cylinder (for advance)

44, 54: piston rod 45, 55: return spring

46, 56: return cylinder 47, 57: return guide

48, 58: pinhole 50: long hole

50 ': head seat 51': pin head

52 ': bushing head 52: set screw

54 ': load head

The present invention for achieving the above object, the winding mold of the upper winding mold and the lower winding mold for manufacturing the saddle-shaped deflection coil of the cathode ray tube having an opening for deflecting the electron beam over the horizontal axis or vertical axis of the screen A slide pin comprising: a slide pin for advancing and reversing into a winding space portion in one of an upper winding mold and a lower winding mold to form the predetermined opening; A long hole in which a long side is formed in a direction in which a position of the opening is changeable in a mold of a position at which the slide pin is to be installed; And, it is inserted into the short side of the long hole, is fixed to be movable in the long side direction, and provides a winding mold for changing the opening position of the deflection coil of the cathode ray tube, characterized in that it comprises a bushing for guiding the slide pin.

A head sheet may be formed at the rear of the long hole so that the bushing is stably fixed to the rear of the long hole, and a bushing head seated on the head sheet may be formed at the bushing, and the advance of the slide pin may be performed even when the position of the slide pin is changed. It is preferable that an enlarged head is formed at the contact portion of the slide pin and / or the piston rod so that the slide can move forward without changing the position of the air slender.

Hereinafter, an embodiment (s) according to the present invention will be described with reference to the accompanying drawings.

In FIG. 5, the winding mold of which the opening position of the deflection coil of the cathode ray tube according to the present invention is changeable is composed of upper and lower winding molds 31 and 32 engaged in the coupling part 33, as shown in FIG. 3. A slide pin 51 for forming 33e) is provided. In FIG. 5, one slide pin 51 is shown, but a plurality or slide blocks may be installed as necessary. As shown in FIG. 3, a plurality of coils are drawn out from the plurality of bobbins, and the coil is supplied to a predetermined position through the nozzle (not shown) through the guide roller and the tension roller. When the nozzle is moved to the left and right and up and down to wind the coil, one end of the coil is first fixed to the pin, and when the nozzle is moved to the coil supply position, the upper and lower winding molds 31 and 32 engaged by the coupling part 33 are moved. By rotating, the coil is wound along the coil inlet 34 to the winding space 40 having a predetermined shape between the molds. In this way, when the winding is completed, the other end of the coil is cut by the connection end forming means (not shown) and the coating layer is removed to form the predetermined first and second connection ends together with one end of the coil described above. By passing a current through the coated first and second connection ends to maintain the wound shape, the bond layer, which is the outermost layer of the coil, is melted, bonded and cooled by resistance heat. After cooling in this way, the manufacture of the deflection coil is completed by unloading the winding deflection coil by releasing the coupling of the upper and lower winding molds 31 and 32.

As described above, in order to change the position of the movable slide pin 51 forming the openings 33f and 33e while the winding of the saddle-type horizontal deflection coil 30 is performed, the slide in FIGS. It is inserted into the long hole 50 in which the long side is formed in the direction which can change the position of the said opening part 30f, 30e in the metal mold | die of the position part in which the pin 51 is installed, and the short side of the long hole 50, and in the long side direction It is fixed to the movable, the bushing 52 for guiding the slide pin 51 is installed on any one of the upper winding mold (31).

5 and 6 in the initial setting is inserted into the bushing 52 at a predetermined position of the long hole 51 and assembled by fixing the fixing screw 52 through the head sheet 40 '.

As described above, the slide pin 51 assembled as described above is also in the initial state of the winding by the return spring 55 or the return cylinder 56 and the return guide 57, and then moves forward in the middle of the winding stage. The coil that is advanced by being advanced by the air cylinder 53 and the piston rod 54 and inserted into the pinhole 58 is no longer inside the position of the slide pin 51 shown by the dashed line of the winding space portion 40. The furnace is not wound so that the above-described openings 30f and 30e are formed.

After that, when the position of the slide pin 51 is to be changed, the fixing screw 52 fixed at the initial setting in FIG. 6 is released, and the bushing 52 is detached, and then the change of the long hole 50 is performed again. The bushing 52 can be easily moved by inserting the bushing 52 at the position and assembling the fixing screw 52 via the head sheet 50 '.

On the other hand, when the pinhole 58 is formed in the opposing mold, the shape of the pinhole 58 also corresponds to the long hole 50 so that the slide pin 51 is changed without any other change when the slide pin 51 is changed in position. ) Can be accommodated. In addition, the pinhole is also omitted in order to easily change its position. However, when the position of the slide pin 51 is changed, a pin is formed with a pinhole 58 which is inserted into an opposing mold when the slide pin 51 is moved forward. It is also possible to provide the hole bushing and the pinhole long hole on which the pinhole bushing is moved and fixed so as to change the position of the pinhole in response to the positional change of the slide pin 51 on the opposite mold side.

5 and 6, as an example of the fixing method of the bushing 52, a head sheet 50 'is formed at the rear of the long hole 50, and the head sheet 50 is formed at the bushing 52. By forming the bushing head 52 'seated at 50', the bushing 52 may be further stably and simply fixed to the rear of the long hole 50.

5 and 6, the slide pin 51 or the piston rod 54 is formed with a head, i.e., a pin head 51 'or a rod head 54', which is enlarged at the contact portion thereof. . Thus, the pin head 51 'or the rod head 54' is formed so that even when the position of the slide pin 51 is changed, the position of the air cylinder 53 for advancing the slide pin 51 is not changed. It becomes usable. In the case of using the return cylinder 56 and the return guide 57, the position of the return cylinder 56 itself is changed by adjusting the position by making the hand part of the return guide 57 U-shaped or having a separate structure. Without this, it is possible to correspond to the changed position of the slide pin (51).

According to the circumferential multilayer split winding deflection coil and the winding method and apparatus thereof of the cathode ray tube according to the embodiments of the present invention as described above, by a simple structure and a simple position adjustment operation by the long hole 50 and the bushing 52 It is possible to easily change the position of the opening of the deflection coil of the cathode ray tube by changing the position of the opening slide pins before and after the heat treatment to improve the characteristics of the deflection coil and to facilitate the productivity, maintenance and repair of the mold. There is an effect such as.

Claims (4)

In a winding mold of an upper winding mold 31 and a lower winding mold 32 for producing a saddle-shaped deflection coil of a cathode ray tube having an opening for deflecting an electron beam over a horizontal or vertical axis of the screen: A slide pin (51) for advancing and reversing into the winding space (40) in one of the upper winding mold (31) and the lower winding mold (32) to form the predetermined opening; A long hole 50 in which a long side is formed in a position changeable direction of the openings 30f and 30e in a mold at a position where the slide pin 51 is to be installed; And The opening position of the deflection coil of the cathode ray tube, characterized in that it is inserted into the short side of the long hole 50, is fixed to be movable in the long side direction, the bushing 52 for guiding the slide pin (51) Possible winding molds. The head sheet 50 'is formed at the rear of the long hole 50 so that the bushing 52 is stably fixed to the rear of the long hole 50, and the head sheet 50 is formed at the bushing 52. And a bushing head 52 'seated at'), wherein the opening mold of the deflection coil of the cathode ray tube is changeable. The slide pin according to claim 1 or 2, wherein the slide pin 51 can be moved forward without changing the position of the air cylinder 53 for moving the slide pin 51 even when the position of the slide pin 51 is changed. 51) to the piston rod (54), wherein the enlarged head is formed in the winding mold of the opening position of the deflection coil of the cathode ray tube, characterized in that formed. The pinhole bushing according to claim 1 or 2, wherein a pinhole (58) is formed to be inserted into an opposing mold when the slide pin (51) moves forward when the position of the slide pin (41) is changed, and the slide pin (51). Pin hole long hole in which the pinhole bushing is moved and fixed so as to change the position of the pinhole so as to change the position of the pinhole is installed on the opposite mold side. .