JPH0355965B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lead winding device for winding a capacitor lead around a terminal installed in the base of a coil.

For example, in a coil component such as an intermediate frequency transformer, as shown in Fig. 1, a recess 2a is provided on the bottom surface of a base 2 to which a bobbin 1 is fixed, and a capacitor 3 is installed in this recess 2a. There is something. The winding work in such a coil is
Although it is automated as seen in Japanese Patent Publication No. 47-32255, the terminal of the lead of capacitor 3 is processed manually. This is because the leads of the capacitor 3 are thicker and shorter than the wire of the coil, and the work is complicated, as the leads must be passed through the hole at the bottom of the base 2 and pulled out through the groove on the side of the base 2. be.

That is, the two leads 4 of the capacitor 3 are
After being inserted into the through hole formed at the bottom of the recess 2a and guided to the upper surface of the base 2, they are bent, and then implanted in the base 2 through the groove 2b provided on the side surface of the base 2, for example, as shown in FIG. terminal 5
It is brought out in contact with the root of. Thereafter, the lead 4 is wound around the terminal 5 and the excess portion is cut off. Conventionally, this series of operations was performed manually using tweezers or the like, but this required skill and was inefficient, as well as resulting in uneven finish.

The present invention attempts to eliminate the conventional drawbacks by mechanizing this work. In particular, the lead 4 that penetrates the base 2 and protrudes from the upper surface thereof is bent, and the second lead 4 is passed through the groove 2b on the side surface of the base 2. It is an object of the present invention to provide a lead winding device that can mechanize the process of winding the lead 4 around the base 2 and the terminal 5 until the state shown in the figure is achieved.

The lead wrapping device of the present invention has a holder that holds a base and can freely rotate, an arm that reciprocates around the base by approximately half a turn, and a chuck attached to the arm. After holding one of the leads of the circuit element with the chuck, by rotating the arm and holder almost alternately, this lead is introduced into the groove on the side of the base, and then pulled out to the base of the specified terminal. , the chuck is opened while the arm is returning to its initial position.

Hereinafter, regarding one embodiment of the present invention, the lead 4 of the capacitor 3 will be connected to the base 2 of the above-mentioned intermediate frequency transformer.
An example of winding the wire will be explained with reference to the drawings.

FIG. 3 is a perspective view showing an outline of a lead winding device according to the present invention. Reference numeral 6 represents an index table that rotates intermittently at predetermined angles, and reference numeral 7 represents a holder rotatably attached to the index table 6. The holder 7 is intermittently rotated by a pulse motor 8 via a clutch mechanism. The clutch mechanism is for separating the holder 7 and the pulse motor 8 when the index table is rotated, and the clutch mechanism is for separating the holder 7 and the pulse motor 8 when the index table is rotated. Swing lever 1 that moves up and down in the direction
It is composed of 2. When the driver 11 is raised by the swing lever 12 and engaged with the lower end of the holder 7, the rotation of the pulse motor 8 is caused by the rotation of the holder 7.
transmitted to. 13 is a ball bearing attached to the swing lever 12.

The base 2 of the intermediate frequency transformer is fitted and attached to the upper part of the holder 7. The two leads 4 of the capacitor 3 mounted on the base 2 are separated by a separator 14 fixed to the holder 7 and led out in a predetermined direction. 15 is base 2
An arm that reciprocates approximately half a rotation around the
is a rotating shaft to which the arm 15 is fixed. A chuck 19 for holding the lead 4 is slidably attached to a column 18 which connects and fixes the arm 15 and the rear plate 17, and is biased in one direction by a spring 20. The chuck 19 has a base 19a
and a movable part 19b, which is always urged by a spring 21 in the direction of closing the chuck 19. A ball bearing 22 is attached to the rear end of the movable portion 19b. Check 1
9 is opened and closed by rotating a cam 23 that is in contact with a ball bearing 22, and is held in an open or closed state as required by the interaction between the cam 23 and the spring 21. It is done like this. 23a is a lever provided on the cam 23. 24 rotates the cam 23 to open the chuck 19 when the arm 15 is at the lower limit position.
The lever 25 for closing the lever 24 is an air cylinder that rotates the lever 24. 26 is check 1
Press the pin 27 fixed to the chuck 19
This is an air cylinder for raising the 3rd
The figure shows the chuck 19 in a raised state. Although not shown in FIG. 3, this device is provided with a separate chuck release mechanism.

Next, the operation of this lead winding device is
This will be explained with reference to the drawings and FIGS. 4 to 11. In the figure, the white arrow indicates the movement of the chuck 19, that is, the direction of rotation of the arm 15.

Now, as shown in Fig. 3, the arm 15 is stopped at the lower limit position, and the chuck 19 is opened at the raised position.
One of the leads 4 of the capacitor 3 is inserted into the holder 7, and a driver 11 is engaged with the lower end of the holder 7. From this state, first the air cylinder 25
When the lever 24 is driven to rotate the cam 23 and close the chuck 19, the chuck 19 is closed as shown in FIG.
holds one lead 4 between them. Then, when the piston 26a of the air cylinder 26 is lowered, the chuck 19 does not descend because it is holding the reed 4, and the chuck 19 is suspended from the reed 4. Next, as shown in FIG. 5, the arm 15 is rotated until the clamped lead 4 becomes almost horizontal and stopped, and then the holder 7 is rotated until the groove 2b through which the lead 4 is passed is located at the position of the lead 4. (Figure 6). Then, as shown in FIG. 7, the arm 15 is further rotated to the upper limit position to move the lead 4 into the groove 2b.
At the same time, the holder 7 is rotated as shown in FIG. The chuck 19, which was initially suspended from the reed 4, is pushed up and held by the spring 20 in this state where the arm 15 is reversed. Next, when the arm 15 is reversely rotated and the holder 7 is simultaneously rotated until the clamped lead 4 becomes almost horizontal, the state shown in FIG. 9 is changed to the state shown in FIG. 10. Immediately after this, the chuck 19 is opened by a chuck opening mechanism which will be described later. With the lead 4 released, the chuck 19 is pressed by the spring 20 and retreats along the column 18, moving away from the base 2 as shown in FIG. Then, the chuck 19 returns to the lower limit position together with the arm 15 in an open state, and the holder 7 also rotates to its initial state and stops. After this, the driver 11 is separated from the holder 7, and the index table 6 is rotated.
This base 2 is moved to the next station together with the holder 7, and replaced with the holder 7 holding a new base 2. Then, if the piston 26a of the air cylinder 26 and the driver 11 of the clutch mechanism are raised, the state shown in FIG. 3 will be achieved again. After that, repeat the above operation. Note that the other lead 4 that was not wound in this step is processed by a similar winding device at the next station.

Here, the chuck release mechanism will be explained.
Figure 12 shows the check 1 during the return process of the arm 15.
9 is a perspective view showing a state immediately before opening. In this figure, the reference numeral 28 designates an engagement element rotatably attached to the base 29 about a shaft 30, and the reference numeral 31 designates a stopper pin fixed to the base 29. The engaging element 28 is
A rotational force is applied in one direction by a torsion spring 32, and the pin 28a fixedly provided to the engaging element 28 hits the stopper pin 31, thereby stopping the engaging element 28. That is, the engager 28 in the state shown in FIG. 12 is rotatable in only one direction. The position of the engager 28 is such that when the chuck 19 descends while rotating together with the arm 15 and comes almost in front of the base 2, the lever 23a of the cam 23 moves toward the engager 28.
It is placed so that it hits the Therefore, as the chuck 19 descends, the cam 23 is rotated by the engaging element 28 which has stopped against the stopper pin 31 as shown in FIG. 13A, and the chuck 19 is opened. On the other hand, check 1
9 rises, the engager 28 pushed up by the lever 23a of the cam 23 rotates as shown in FIG. 13B against the torsion spring 32.
The movement of the chuck 19 when rising is not impeded by this chuck release mechanism.

Although an example of winding a capacitor lead around the base of an intermediate frequency transformer has been described above, the present invention is not limited to this, and the present invention may also include winding a lead of another circuit element around the base of another electronic component. It can also be applied to processes. In addition, the chuck structure and clutch mechanism can be modified in various ways, such as using a solenoid or cam instead of an air cylinder, or using a regular motor and cam instead of a pulse motor to drive the holder. It's okay.

As is clear from the above description, the present invention provides an apparatus for winding the leads of a circuit element attached to an electronic component around a terminal of the electronic component. A rotatable holder, an arm that is rotatable about an axis substantially perpendicular to the rotational axis of the holder and that reciprocates between a first position and a second position by making approximately half a turn around the electronic component; The arm is equipped with a chuck that can be opened and closed and is attached to the chuck so as to be slidably biased by a spring, a means for closing the chuck, and a means for opening the chuck. When in the first position, the chuck is closed and clamped, and the arm and holder are rotated to wrap the lead around a predetermined terminal, and in the process of the arm returning from the second position to the first position. It is characterized by a structure in which the chuck can be opened.

As described above, according to the present invention, the troublesome work of winding a lead can be automated and performed continuously, and productivity can be significantly improved. In addition, by combining the rotation of the arm and the rotation of the holder, it is possible to wind the lead through any groove and onto any terminal, so it can be used with various intermediate frequency transformers etc. where the terminals to which the leads are connected are located in different positions. , which has the advantage of being easily adaptable.

[Brief explanation of drawings]

Figure 1 is an exploded perspective view of an inverted intermediate frequency transformer, Figure 2 is an enlarged bottom view of the transformer in the assembly process,
Figures 3 to 13 show an embodiment of the present invention, with Figure 3 being a perspective view showing an overview of the device, Figures 4 to 11 being explanatory diagrams of operation, and Figure 12 being in operation. FIG. 13A and FIG. 13B are operation explanatory diagrams of the main parts. 2...Base, 4...Lead, 5...Terminal, 7
...Holder, 15...Arm, 19...Chuck, 23...Cam, 28...Engager.

Claims (1)

[Claims] 1. A device for winding the lead of a capacitor attached to the base of a coil around a terminal of the coil, comprising: a holder that holds the coil and is rotatable about an axis parallel to the longitudinal direction of the terminal; and a holder. an arm that is rotatable around an axis substantially perpendicular to the rotational axis of the coil and reciprocates between a first position and a second position by making approximately half a turn around the coil; a chuck that is energized and attached to the chuck, means for closing the chuck, and means for opening the chuck, the chuck for connecting one of the leads of the capacitor attached to the coil with the chuck when the arm is in the first position; By holding the lead and rotating the arm and holder, the lead is guided into the groove on the side of the base, pulled out to the base of the specified terminal, and wrapped around the terminal, and the arm moves from the second position to the first position. A lead wrapping device characterized by opening the chuck during the process of returning to the position. 2. The means for opening the chuck consists of an engager that is rotatable in only one direction, and in the process of the arm returning from the second position to the first position, the engager opens the opening/closing cam attached to the chuck. A lead winding device according to claim 1, which rotates to open the chuck.