JPS6225868Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a wire feeding device from a nozzle, and an object of the present invention is to provide a wire feeding device that can reliably feed the tip of the wire into a clamp device.

For example, in an automatic wire winding device, in order to manufacture a horizontal coil of a deflection yoke, a predetermined self-fusing wire is made to protrude by a predetermined distance from a predetermined nozzle in advance, and the tip of the wire is held by a clamp member of the wire winding device. After clamping, the wire is wound up as it is fed out, and the beginning and end of the winding of the wire are heated with electricity using electrical electrodes to fuse themselves and form the desired coil. Repeatedly and automatically. A wire feeding device used in this type of automatic wire winding device will be explained.

In Figures 1 and 2, the nozzle 1 is the nozzle body 2.
and a pedestal 3, and the nozzle body 2 has a guide hole 2a.
It has a nozzle tip 4 at its tip and is inserted into and fixed to the base 3. Note that the nozzle 1 is capable of reciprocating in the directions of arrows A and B. Reference numeral 5 denotes a wire having one or more self-bonding coatings (only one is shown for convenience in FIG. 2), which is guided into the guide hole 2a and moved in advance to the front of the nozzle body 2 for a length required for the clamp described later. It is prominent. 6 is the clamp part of the wire winding device;
It has a pair of claws 7 that are close to each other and spaced apart from each other. In the above configuration, the nozzle 1 in FIG. 1 starts to slide in the direction of arrow A, and the tip of the protruding wire 5 is inserted between the claws 7 of the clamp part 6, and then the claws 7 approach each other to grip the wire 5. Clamp the wire rod 5
As the wire is fed out, the wire 5 is wound to form a coil (not shown).

Although the clamp part 6 is shown in a simplified manner in the drawing, it has the function of an electrode for passing current through the wire 5 itself in order to self-fuse the coating of the wire 5, and a function of clamping the wire 5. In reality, the structure is complicated. On the other hand, since the wire rod 5 is a weak and easily bendable magnet wire or the like, the protruding portion of the wire rod 5 is easily bent and deformed as shown in FIG. In this case, together with the complicated structure of the clamp section 6, the tip of the wire 5 may not be inserted smoothly into the clamp section 6 near the entrance of the clamp section 6, making it impossible to clamp it. It had the drawback of causing accidents. If such an accident occurs, the work must be temporarily stopped and the wire rods 5 must be straightened, so the wire rods 5 often bend in different directions, especially when there are two or three wire rods. This has the disadvantage that it becomes even more difficult to feed the coil, reducing work efficiency and making it impossible to repeat the winding operation fully automatically without interrupting the operation.

Moreover, even if only a small number of wire rods 5 are clamped and winding can be performed, leaving some of the wire rods 5 that are not clamped by the claws 7,
The unclamped wire 5 has the disadvantage that no current flows and it is not heated, so it does not self-fuse and cannot be formed.

The present invention eliminates the above-mentioned drawbacks, and an embodiment thereof will be described below with reference to the drawings.

Figures 3A and 3B show schematic diagrams before and after operation of one embodiment of the wire feeding device from the nozzle according to the present invention, respectively, and the same parts as in Figures 1 and 2 are given the same reference numerals. vinegar. Reference numeral 11 denotes a nozzle, which, as shown in FIG. 4, consists of a nozzle body 12 forming an inner cylinder, a cylindrical nozzle case 13 forming an outer cylinder, and a pedestal 3. The nozzle body 12 has a guide hole 12a and a stepped portion 12b, and is inserted into and fixed to the base 3.

The nozzle case 13 has a tapered convex portion 13a at the tip,
It has a guide hole 13b and a nozzle tip 4, and is fitted to the outer periphery of the nozzle body 12 so as to be slidable in the directions of arrows A and B in the figure. At this time, the flanged ring 14 screwed and fixed to the lower end of the case 13 is attached to the nozzle body 12.
A coil spring 15 is fitted between the ring 14 and the pedestal 3. Therefore, the case 13 normally has a ring 14 pressed in the direction of arrow A by a spring 15, and the ring 14 is in contact with the stepped portion 12b with the tip of the case 13 protruding the most from the nozzle body 12.

Although only one wire 5 is shown for convenience in FIG. 4, a very small amount (for example, 2 to 3
mm) protruding. Therefore, even though the wire 5 itself is weak and bends easily, most of the tip of the wire 5 is guided along the nozzle axis by the guide hole 13b.

A receiver 16 having a tapered recess 16a is fixed to the clamp portion 6 at the feeding hole portion of the wire rod 5 in FIG. 3A.

Next, the operation of the above device will be explained. Figure 3A
When the nozzle 11 is moved in the direction of the arrow A, the tapered convex portion 13a at the tip of the nozzle case 13 first fits into the tapered concave portion 16a of the receiver 16. At this time, the tip of the wire 5 is tapered by the small amount described above into the concave part 1.
It is inserted into the vicinity of the entrance of the clamp part 6 through the bottom hole of the clamp part 6a.

Next, the nozzle body 12 (wire rod 5) continues to move by a predetermined distance in the direction of arrow A while compressing the spring 15, and is stopped at the position shown in FIG. 3B. During this time, the case 13 is stopped in contact with the clamp part 6 as described above, so as the nozzle body 12 moves in the direction of arrow A, the tip of the wire 5 is relatively attached to the nozzle 1.
1 and is further fed into the clamping part 6 by a predetermined distance as shown in FIG.

As mentioned above, the wire rod 5 is projected out of the nozzle 11 by the required amount only after the case 13 comes into contact with the clamp part 6, so it is reliably inserted between the claws 7 and securely clamped, and various wire rods can be smoothly connected. Moreover, winding can be performed continuously.

Note that even if the slightly protruding portion of the wire 5 from the case 13 is slightly bent and deformed during the above operation,
Since the tip of the wire 5 comes into contact with the tapered recess 16a of the receiver 16 and is corrected and deformed to the nozzle axis position, the wire 5 can be fed even better.

As described above, according to the wire rod feeding device from a nozzle according to the present invention, in the wire rod feeding device that feeds the wire from the nozzle that guides the wire into the wire rod tip gripping device, the nozzle is connected to the nozzle body and the nozzle body in a reciprocating manner in the nozzle axial direction. It consists of a nozzle tip that is slidably assembled, and after the nozzle moves forward in the axial direction and the nozzle tip comes into contact with the gripping device, the nozzle body and wire continue to move forward. By doing this, the tip of the wire is relatively fed out by a predetermined distance from the tip of the nozzle, so the wire does not protrude much beyond the nozzle when it is not being fed out, thereby preventing unnecessary bending and deformation of the protruding portion. Moreover, only after the nozzle tip comes into contact with the clamp part, the wire rod is relatively protruded and fed out by the required amount for clamping, so feeding the wire to the clamp part and clamping operation are reliable, making it suitable for automatic wire winding devices. In this case, various wire rods can be wound smoothly and continuously, and work efficiency can be improved.

[Brief explanation of the drawing]

1 and 2 are a schematic diagram of a conventional example of a wire rod feeding device from a nozzle and a vertical sectional view of the nozzle, respectively, and FIGS. 3A and 3B are respectively one implementation of the wire rod feeding device from a nozzle according to the present invention. Schematic diagrams before and after operation of the example, and FIG. 4 is a longitudinal sectional view of the nozzle. 1, 11... Nozzle, 2, 12... Nozzle body, 5... Wire rod, 6... Clamp part, 7... Claw,
13...Nozzle case, 13a...Tapered convex portion,
16...Receiver, 16a...Tapered recess.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A wire feeding device that feeds a wire from a nozzle that guides the wire into a wire tip gripping device, the nozzle comprising a nozzle body and a nozzle that is assembled to the nozzle body so as to be slidable back and forth in the nozzle axial direction. After the nozzle moves forward in the axial direction and the nozzle tip abuts the gripping device, the nozzle body and the wire continue to move forward, so that the tip of the wire relatively A wire feeding device from a nozzle configured to feed a predetermined amount of wire from the tip of the nozzle. 2. From the nozzle according to claim 1 of the utility model registration claim, characterized in that the nozzle tip and the abutment part of the gripping device are provided with convex and concave fitting parts that can abut and fit with each other, respectively. wire feeding device.