JPH07283066A - Automatic wiring machine and wire holding part thereof - Google Patents

Abstract

PURPOSE:To prevent disconnection of wire by feeding the wire, at the part connected with a terminal, constantly from the root of the terminal to the bobbin side thereby winding the wire tightly around the terminal. CONSTITUTION:The automatic winding machine comprises a nozzle 6 having a hole for feeding a wire 5, and a part 8 for holding the wire 5 passed through the hole of the nozzle 6 at the end thereof and the wire 5 is wound around a work 10 having a bobbin 16 and a terminal 12. The wire holding part 8 is turned around a first terminal 12 in order to wind the wire 5 on the start-of- winding side of coil and then the nozzle 6 is turned around a second terminal 12 in order to wind the wire 5 on the end-of-winding side of coil.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic winding machine used in a winding process of a high frequency coil or the like, and more particularly to an improvement of a wire holding portion which holds one end of a wire.

[0002]

2. Description of the Related Art FIG. 7 shows a wire holding portion 1 which has been conventionally used, in which a tubular body 2 and a shaft portion 3a are composed of a pusher 3 movable in the tubular body 2, This is a structure in which a wire is sandwiched between the pressing elements 3. FIG. 8 shows the wire holding unit 1.
Shows the state immediately before the start of winding on the work 10 using. The work 10 is an example of a high-frequency coil, and includes a base 14 having a plurality of terminals 12 implanted therein, and a bobbin 16 fixed to the base 14. Now, the work 10 is held by the rotatable chuck 4 with the tip of the bobbin 16 sandwiched. The wire 5 unwound from a winding frame (not shown) passes through the through hole of the nozzle 6 and is held at its end by the wire holding portion 1. In this state, the nozzle 6 is rotated several times around the terminal 12 to wind the wire 5 around the terminal 12, and the wire holding portion 1
When the wire is pulled away from the work 10, the end of the wire 5 is separated from the root of the terminal 12, and the winding on the terminal 12 at the winding start side end is completed. Then, when the nozzle 6 is moved onto the bobbin 16 to rotate the chuck 4 and the coil 18 is wound around the bobbin 16, the winding state of the wire 5 on the winding start side of the coil is as shown in FIG. After that, the end portion of the coil 18 on the winding end side is wound by rotating the nozzle 6 around another terminal 12 in the same manner.

[0003]

The wire 5 at the portion connected to the terminal 12 is preferably drawn out from the root of the terminal 12 to the bobbin 16 along the surface of the base 14 as shown in FIG. According to the conventional winding method described above, the end of the wire 5 on the winding end side is pulled out from the coil 18 and wound from the root of the terminal 12, so that the wire is wound in the state as shown in FIG. However, since the end of the wire 5 on the winding start side is wound around the terminal 12 and then led out to the bobbin 16 side, the bobbin 16 is moved from the position away from the base 14 as shown in FIG. It will be pulled out to the side. When the wire 5 in the portion connected to the terminal 12 floats from the base 14 in this way, the wire 5 in the portion wound around the terminal 12 easily loosens, and when soldered, so-called solder erosion occurs and the wire floats. There is also a problem that the wire 5 becomes thin and easily breaks. Further, there is a drawback that the holding force of the wire 5 is weak because the portions of the wire holding portion 1 between the tubular body 2 and the pressing element 3 that sandwich the wire 5 are flat.

[0004]

It is an object of the present invention to provide an automatic winding machine in which the wire 5 at the portion connected to the terminal 12 is always pulled out from the root of the terminal 12 to the bobbin 16 along the surface of the base 14 as shown in FIG. The first purpose is to do so. A second object of the present invention is to provide a wire holding portion of an automatic winding machine having a large holding force for the wire 5.

[0005]

According to the present invention, in an automatic winding machine having a nozzle and a wire holding portion, the wire holding portion is rotated around a first terminal of a work,
Wind the wire at the end on the winding start side of the coil,
It is characterized in that the wire is wound at the end portion on the winding end side of the coil by rotating the nozzle around the second terminal of the work. Further, the present invention provides a holder having a first through hole penetrating in the longitudinal direction, a sleeve having a second through hole which is movable within a predetermined range within the first hole, and a second through hole. , A first spring that urges the sleeve rearward with respect to the holder, and a second spring that is mounted between the clamper pin and the sleeve and that is stronger than the first spring. The wire holding portion is characterized by including a spring and capable of holding the wire between the front surface of the sleeve and the pressing element.

[0006]

FIG. 1 shows an embodiment of the present invention.
The flat plate 7 is connected to a motor (not shown), and is orthogonal to three axial directions, that is, the X axis (for example, the horizontal direction in the drawing), the Y axis (the same vertical direction), and the X axis and the Y axis. It is movable in the Z-axis direction. The plate 7 includes a tapered cylindrical nozzle 6 and a wire holding portion 8.
Are mounted in parallel with each other so as to project in the front (downward in the figure) of the plate 7 along the Y-axis direction. The wire holding part 8 includes a holder 20 fixed to the plate 7 and a holder 20.
A substantially cylindrical sleeve 30 movable in a through hole 22 penetrating longitudinally through 20 and a clamper inserted into the through hole 22 of the holder 20 and the front portion of which is inserted into the through hole of the sleeve 30. It has a pin 40. A cylindrical stopper 50 is fixed in the through hole 22 at the rear part of the holder 20, and a step portion 24 is formed in the through hole 22. The collar 32 provided at the rear portion of the sleeve 30 abuts against the stopper 50 or the step portion 24, so that the movable range of the sleeve 30 is limited. The clamper pin 40 has a pusher 42 having a larger diameter than the through hole of the sleeve 30 at the front end, and a guide portion 44 having a diameter slightly smaller than the inner diameter of the stopper 50 at the rear end.
It is equipped with A ring-shaped collar 46 that serves as a stopper when the clamper pin 40 advances is fixed to the rear end of the guide portion 44.

The sleeve 30 is biased rearward with respect to the holder 20 by a spring 60 mounted between the sleeve 30 and the holder 20. Further, a spring 70 is attached between the guide portion 44 of the clamper pin 40 and the sleeve 30, and both are urged so that the pressing element 42 and the front surface 35 of the sleeve 30 are closed. As shown in an enlarged view in FIG. 2, a taper portion 42a that becomes thinner toward the rear is provided at the rear portion of the pusher 42, and a front surface 35 of the sleeve 30 facing the pusher 42 has a slope 34 along the taper portion 42a. The depression is formed. After passing through the hole of the nozzle 6, the wire 5 unwound from a winding frame (not shown) is sandwiched between the pressing element 42 and the front surface 35 of the sleeve 30 and held by the force of the spring 70. As the spring 70, a strong spring 70 is selected so as not to come off even if the pinched wire 5 is pulled. On the other hand, the spring 60 has a much smaller elastic force than the spring 70, and contracts with a force smaller than the tensile strength of the wire 5 held between the pressing element 42 and the sleeve front surface 35. Therefore, the sandwiched wire 5
When tension is applied to the spring 60, the spring 60 contracts but the spring 70 does not deform, so that the sleeve 30 and the clamper pin 40 both stay in the through hole 22 of the holder 20 while the space between the pressing element 42 and the sleeve front surface 35 remains closed. You will move forward.

Next, the operation will be described by taking as an example the case where the wire holding portion 8 is used to wind the work 10 of the high frequency coil. First, the plate 7 to which the nozzle 6 and the wire holding portion 8 are fixed is moved, and the wire 5 in the portion stretched between the nozzle 6 and the wire holding portion 8 is moved to the bobbin 16 of the work 10 as shown in FIG. Go under. Then, as shown in FIG. 4, the wire holding part 8 is rotated around the terminal 12 together with the plate 7. Then, the wire 5 is wound around the terminal 12 and at the same time, the sleeve 30 and the clamper pin 40 are compressed by the tensioned wire 5 to compress the spring 60, and the front surface 35 of the sleeve 30 and the pressing element 42 are closed. Leave, holder
It advances in the through hole 22 of 20. Then, as shown in FIG. 5, when the collar 32 hits the step 24, the sleeve 30
Clamper pin 40 stops and wire 5 breaks at terminal 12. By forming a roundness at the tip of the wire holding portion 8 so that the wire 5 can be bent in a gentler curve than the terminal 12 side, the wire 5 can be reliably cut on the terminal 12 side. The unnecessary wire 5 remaining in the wire holding portion 8 is pushed by pressing the collar 46 or the clamper pin 40 from the rear side, and as shown in FIG.
The space between 42 and is removed. In this way, the winding on the terminal 12 at the winding start side end is completed.

The coil 18 may be wound around the bobbin 16 by moving the nozzle 6 onto the bobbin 16 and rotating a chuck (not shown) holding the end of the bobbin 16 as in the conventional case. The terminal connection of the wire 5 at the end on the winding end side of the coil 18 is also performed by rotating the nozzle 6 around another terminal 12 as in the conventional case. Then, before cutting the wire 5, the wire 5 is taken by the wire holding portion 8 as shown in FIG. 6, and the wire 5 is sandwiched between the front surface 35 of the sleeve 30 and the pressing element 42 and then strongly squeezed in the lateral direction. The wire 5 is cut at the portion of the terminal 12 by pulling. Then, the nozzle 6 and the wire holding portion 8
And the wire 5 returns to the state of FIG. After that, the above operation may be repeated.

[0010]

In the automatic winding machine of the present invention, the wire at the winding start side end of the coil is wound by the wire holding portion, and the winding end side wire is wound by the nozzle. Therefore, the wire of the portion connected to the terminal is always pulled out from the root of the terminal to the bobbin side along the surface of the base as shown in FIG. Therefore, the wire wound around the terminal does not loosen, and disconnection failure can be prevented. Further, since the front surface of the sleeve and the rear portion of the pusher are engaged with each other, there is an effect that a wire holding portion having a large wire holding force can be obtained without using a strong spring 70.

[Brief description of drawings]

FIG. 1 is a partial sectional front view showing an embodiment of the present invention.

FIG. 2 is a partially sectional front view showing an enlarged tip of a wire holding portion in an opened state.

FIG. 3 is an explanatory diagram of a winding process

FIG. 4 is an explanatory diagram of a winding process

FIG. 5 is an explanatory diagram of a winding process

FIG. 6 is an explanatory diagram of a winding process

FIG. 7 is a front view of a conventional wire holding portion.

FIG. 8 is an explanatory diagram of a conventional winding process.

FIG. 9 is a partial front view of a high-frequency coil showing a first example of a wire winding state.

FIG. 10 is a partial front view of a high frequency coil showing a second example of a wire winding state.

[Explanation of symbols]

 5 wire 6 nozzle 8 wire holding part 20 holder 30 sleeve 40 clamper pin 42 pusher

Claims (4)

[Claims] 1. A work having a nozzle having a wire supply hole and a wire holding portion for holding an end portion of the wire passing through the hole of the nozzle, and having a bobbin and first and second terminals. In an automatic winding machine that winds a coil around a bobbin and winds wires at both ends of the coil around the first and second terminals, by rotating the wire holding portion around the first terminal, The automatic winding is characterized in that the wire at the end on the winding start side is wound, and the wire at the end on the winding end side of the coil is wound by rotating the nozzle around the second terminal. Machine. 2. A holder having a first through hole penetrating in the longitudinal direction, a sleeve having a second through hole which is movable within a predetermined range within the first hole, and a second through hole. A clamper pin that is movable and has a presser at the front end,
A first spring for biasing the sleeve rearward with respect to the holder, and a second spring mounted between the clamper pin and the sleeve and stronger than the first spring, and between the front surface of the sleeve and the presser. A wire holding part of an automatic winding machine configured to be able to hold a wire. 3. The wire holding portion of the automatic winding machine according to claim 2, wherein a taper portion that becomes thinner toward the rear is provided at the rear portion of the pressing element, and a recess having an inclined surface along the taper portion is formed on the front surface of the sleeve. 4. A stepped portion is formed on the inner wall of the holder, and a collar that engages with the stepped portion is provided on the rear portion of the sleeve, and when the clamper pin is pushed forward from the rear side, the collar portion abuts on the stepped portion. The first spring contracts, the clamper pin and the sleeve move forward together with the front surface of the sleeve and the presser element closed, and the second spring contracts after the collar hits the step. The wire holding part of the automatic winding machine according to claim 2 or 3, wherein only the pin is moved forward.