JPH0722061B2 - Bobbinless coil winding machine - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bobbinless coil winding machine, and more particularly to a bobbinless coil winding machine having an improved wire winding frame.

[Prior Art] This type of winding machine is arranged by forming a gap between the first flange member and the first flange member, which is related to the winding width of the obtained bobbinless coil, and arranging the wire. It is provided with a hollow second flange member having a peripheral groove and an end surface groove for guiding, and a core member which penetrates the first flange member and is engaged with the second flange member.

The winding holds the end of the wire by a second flange member and a retaining member on the outside of the winding, mates the core member with the first flange member, and joins both the flange member and the core member together. While rotating, the nozzle for guiding the wire is moved to guide the wire between the flange members, and the coil is wound around the core member to form a coil on the core member. By pulling the coil out of the core member, moving one of the flange members to widen the gap between the flange members, and dropping the coil.

[Problems to be Solved by the Invention] In such a winding machine, it is difficult to obtain a coil without disturbance. This will be described with reference to FIG. The second flange member A is provided with a groove on the peripheral surface for guiding the wire between the flange members, and has a groove B for connecting the peripheral surface groove and the recess in which the core member C engages with the end surface. It is provided in. The wire is guided between the flange members by the circumferential groove, is pushed into the end groove B, and is then wound around the core member C. In order to obtain a winding without disturbance, the end portion of the end surface groove B on the core member side pushes the wire toward the core member C, and the pushed portion W and each layer of the wound coil interfere with each other. It must have a shape that does not prevent it. Since the shape of the groove must be determined in consideration of the material, shape, size, etc. of the wire, considerable experience and hard technology are required for groove processing. Actually, the process is actually performed by repeating trial and error for each wire in the field where the winding is formed.

SUMMARY OF THE INVENTION The present invention provides an improved bobbinless coil winding machine that can perform winding without disturbance without requiring on-site processing of the end surface groove of the flange member.

[Means for Solving the Problems] In the winding machine of the present invention, a second flange member is formed between the first flange member and the first flange member so as to form a gap related to the winding width of the obtained bobbinless coil. And a core member that penetrates the first flange member and is engaged with the second flange member, and forms an end portion in which the core member is engaged with the second flange member in a fork shape. Is
When engaged with the second flange member, the winding start end of the wire is held by the groove between the arms forming the fork and the second flange member.

[Operation] In the coil winding, the wire is fixed to the second flange member, the core member is engaged with the second flange member, and the core member and the two flange members are rotated together to core the wire. After passing through the groove between the arms forming the fork in the member and positioning the winding start of the wire by the core member and the second flange member, wind the wire around the core member, and when the coil is formed, remove the core member. This is done by moving to the third position and pulling the coil out of the core member.

At the start of winding, the wire introduced between the flange members is inserted into the groove between the arms forming the forks in the core member, and the core member is engaged with the second flange member by While passing through the groove between the arms, the passed portion is clamped by the groove between the arms and the second flange member, and the winding is started from the clamped portion. For this reason, the first turn is wound around the core member along the end surface of the second flange member, and the second and subsequent layers of the coil are not similarly interfered with, so that a coil without disturbance can be obtained.
In addition, by making the distance between the end faces of both flange members correspond to the winding width of the coil to be obtained, it is possible to form the coils of the aligned winding between the flange members.
Then, at the start of winding of the first turn, the end face groove in the second flange member needs only the function of passing the wire from the peripheral surface of the flange member to the end face. It is possible to eliminate the problem of groove processing in.

In the winding machine according to the present invention, along with this, the winding of the bobbinless coil by the ribbon wire, for example, the winding for the field coil of the direct drive motor in the audio equipment, also has the second ribbon wire when starting the winding. Straightly pass through the groove between the end face groove of the flange member and the arm that forms the fork, and when it passes through the groove, it is sandwiched by the groove between the arm that forms the fork of the core member and the second flange member. Since the winding can be performed by bending the formed portion only in the thickness direction to form the coil, the winding can be performed without causing any disturbance.

[Examples] Examples of the winding machine of the present invention will be described below with reference to the accompanying drawings.

This winding machine, as shown in FIG. 1, has a flange member 11,
A winding frame including a flange member 12 and a core member 13 is provided.

The flange member 11 has a flat end surface 14 facing the flange member 12, is provided with a groove 16 on the peripheral surface, a recess 17 on the end surface 14 and a groove 18 connecting the recess 17 and the peripheral surface groove 16. In addition, it is supported by a winding machine main body (not shown) through a bearing.

The flange member 12 is hollow, and the end surface 15 facing the flange member 12 is formed flat, and the end surface 15 and the flange member 12 are
Is formed coaxially with the flange member 11 by forming a gap between the end face 14 and the hollow hole and facing the hollow 17 and is capable of rotating and moving in the longitudinal central axis direction. Built into.

The core member 13 has a fork-shaped tip portion facing the flange member 11, for example, two arms.
With 19, 20 and the groove 21 formed between them,
The arm 19 is formed into a forked fork that is shorter than the arm 20. The core member 13 is loosely fitted in the hollow hole of the flange member 12, and only the tip portion of the arm 20 engages with the recess 17 of the flange member 11 and forms a gap between the end surface 14 and the core member 13. Move the position of and the bottom wall of the groove 21
22 and the end face 14 of the flange member 11 to form a gap related to the diameter of the wire to move the second position to engage the tip portion of the arm 19 with the recess 17
It can be carried out together with 12, and only the core member 13 can be moved into a third position where it is drawn into the inside of the flange member 12. And, the portion forming the tip of the core member 13 has a trapezoidal cross section as a whole, and even if only the tip of the arm 20 is engaged with the recess 17, the core member 13 is in the first position. Even at this time, by rotating only the flange member 11, all the members 11, 12 and 13 are allowed to rotate integrally.

In this winding machine, the winding uses the wire 23 as a flange member.
Fixed to 11, the core member 13 is moved to the first position, the core member 13 and the flange members 11, 12 are rotated together,
Connect the wire 23 to the grooves 16 and 18 of the flange member 11 and the core member 13
After passing through the groove 18 of the core member 13, the core member 13 is moved to the second position, the winding start of the wire 23 is sandwiched between the core member 13 and the flange member 11, and then the core member 13 is wound around the coil member 13 to form a coil. After the formation, the core member 13 is moved to the third position and the coil is extracted from the core member 13.

At the start of winding, the wire 23 is fixed by being sandwiched between the flange member 11 and the pressing member 24 attached to the flange member 11, and is composed of the movement of the nozzle for guiding the wire and the flange members 11 and 12 and the core member 13. It is hooked in the circumferential groove 16 by the rotation of the winding frame, introduced between the flange members 11 and 12, and slips into the groove 18. However, when the wire 23 enters the groove 21 of the core member 13, the core member 13 is moved to the second position, and the arms 19 and 20 are engaged with the recesses 17. As a result, the wire 23 passes straight through the groove 18 of the flange member 11 and the groove 21 of the core member 13, as well as the bottom wall 22 of the groove 21 and the end surface of the flange member 11, as shown in FIGS. It is sandwiched by 14, and more specifically, it is sandwiched by the edge of the bottom wall 22 of the groove 21 on the outlet side and the edge of the recess 17 of the flange member 11 corresponding to this edge. Also at this time, since the flange members 11 and 12 and the core member 13 continue to rotate, the wire 23 is bent from the sandwiching portion and wound around the peripheral surface of the core member 13 while being in contact with the end surface 14 of the flange member 11. To be

In the winding machine according to the present invention, the portion of the wire 23 extruded into the space where the coil is formed, that is, the portion protruding from the end surface 14 of the flange member 11 is the core member.
Inside the groove 21 of the groove 13, the first turn of the coil can be formed on the core member 13 regardless of the shape of the groove 18, and the portion that pushes out the winding start end in the conventional winding machine is the end surface groove 18 Since the winding can be performed without the need for the end surface of the flange member 11 regardless of the wire diameter.
It is possible to obtain a coil which is aligned and wound with the winding width of the coil which is intended to obtain the distance between 14 and the end surface 15 of the flange member 12.

Furthermore, according to the present invention, a bobbinless coil wound by a ribbon wire, for example, as shown in FIG.
Even if the coil is made of ribbon wire having a very small thickness and a small width, winding can be performed without disturbance.

In this winding machine, as shown in FIGS. 5 and 6, the flange members 111 and 112 are arranged so as to form a gap corresponding to the width of the wire, and the end surface groove 18 is formed at a depth related to the width of the wire. The core member 13 is formed in the form of a fork having, at its tip, arms 119, 120 and a groove 121 between these arms.

The winding secures the wire 123 to the flange member 111, moves the core member 113 to the first position and the flange members 111, 112.
The wire 123 is passed through the circumferential groove 116 and the end surface groove 118 of the flange member 111 and the groove 121 of the core member 113 by rotating together with the wire member 123, and the core member 113 is moved to the second position when the wire 123 passes. After the winding start end of 123 is sandwiched between the core member 123 and the flange member 11, the ribbon wire is concentrically wound around the core member 113, and when the coil is formed, the core member 13 is moved to the third position, This is done by extracting the coil from the core member 13.

Also in this case, at the start of winding, the ribbon wire is inserted into the groove on the peripheral surface of the flange member 11 and the end surface groove 118, and then the arm 119 and the arm 120 forming the fork.
Go straight through the groove 121 between the
The groove 12 is sandwiched between the outlet side edge of the groove 122 and the edge of the recess 117 of the flange member 111 corresponding to this edge.
Since the coil is formed in the core member 113 by bending only in the thickness direction from the position where the winding start is made and the bent portion is used as the winding start end, the winding can be performed without pushing out the winding start end. Similar to the winding machine described with reference to FIG. 4, a coil without disturbance can be obtained.

In winding with a ribbon wire, the wire 123 obliquely passes through the end surface groove 118 of the flange member 111 and the groove 121 of the fork portion of the core member 113, and the flange member 111 and the flange member 111
Since it is guided to the gap between 112, the winding start end causes a bulge a with the peripheral surface of the core member 113.
The bulge a is brought into close contact with the surface of the core member 113 by the ribbon wire forming the second layer and is crushed, but in the winding machine according to the present invention, the ribbon wire 123 is moved to the end face groove 118 of the flange member 111 at this time. Since it can be released into the groove 121 in the fork portion of the core member 113, the bulge a can be eliminated without causing the ribbon wire 123 to be twisted. When the ribbon wire is wide, the portion of the core member 113 where the ribbon wire is bent, for example, the bottom wall 119a of the arm 119 is formed into an inclined surface that follows the bulge a of the ribbon wire.
The coil can be wound without causing the bulge a.

Further, this winding machine can also wind a coil in which two coils made of ribbon wire are coaxially arranged. As shown in FIG. 8, this coil has two coil portions C ₁ and C ₂ that are coaxially arranged. The coil portions C ₁ and C ₂ are wound in opposite directions to each other, and The ends on the center side are connected.

The winding machine will be described with reference to FIGS. 5 and 6.
After the flange member 112 has moved a distance related to the width W ₁ of the coil portion C ₁ , it can be moved a distance related to W ₂ of the coil portion C ₂ , and the flange member 112 can be moved after the latter movement. The flange member 111 and the core member 113 can be reversed together.

The winding of the coil C ₁ will be described with reference to FIGS. 5 and 6. The wire 123 is sandwiched between the flange member 111 and the core member 113, and the flange members 111 and 112 and the core member 113 are rotated to form a ribbon. This is done by concentrically winding the wire 123 around the core member 113. However, at the start of winding, the ribbon wire 123 has a length of a portion 123a between a portion sandwiched by the flange member 111 and the pressing member and a portion sandwiched by the flange member 111 and the core member 113, and winds the coil C ₂ . They are given the necessary length of space.

The winding of the coil C ₂ is such that the flange member 112 forms a gap G between the coil C ₁ and the flange member 111, which is related to the width of the coil C ₂ , after the winding of the coil C ₁ has been traversed. As described above, the flange members 111 and 112 and the core member 113 are moved to the coil C _{1 in} this state.
It is made by rotating in the opposite direction from when it was wound. When reversed, the above-mentioned margin length portion 123a of the ribbon wire is pushed out through the end surface groove 118 of the flange portion 111 and the groove 121 in the fork portion of the core member 113, and the coil C ₁ and the flange member 111 are removed. Between the core members 1
Wound around 13, coil C ₂ is formed on the core member coaxial with coil C ₁ . The wound coil has a core member 11
By pulling 3 inside the flange member 112, it is extracted from the core member 113.

Also in this case, when the coil C ₁ is wound, the ribbon wire 123 can be released to the end surface groove 118 of the flange portion 111 and the groove 118 of the core member 113, and not only the bulge a can be removed, Since no twist or the like is generated in the portion indicated by the symbol D in FIG. 8 connecting the coils of the wire 123, a coil without disturbance can be obtained.

[Advantages of the Invention] In the bobbinless coil winding machine of the present invention, as described above, the core member is formed in a fork shape, and when the core member is engaged with the second flange member, the fork is formed between the arms. Groove on the end face of the second flange member so that the winding start end of the wire is positioned by the groove of the second flange member so that the first turn is formed immediately from the portion of the wire that exits the groove. Since the winding can be performed regardless of the shape, it is possible not only to eliminate the processing work for the groove on the end face of the flange member in the conventional winding machine, but also to perform the winding of the bobbinless coil by the ribbon wire.

[Brief description of drawings]

1 to 4 show an embodiment of a bobbinless coil winding machine according to the present invention. FIG. 1 is a perspective view showing the structure around the bobbin, and FIG. 2 is FIG. A sectional view taken along line II, FIG. 3 is a sectional view taken along line III-III in FIG. 2, and FIG. 4 is a sectional view taken along line IV-IV in FIG. 5 to 8
The drawing shows another embodiment of the winding machine of the present invention. Fig. 5 is a sectional view taken along a line corresponding to Fig. 2, and Fig. 6 is an enlarged view taken along line VI-VI in Fig. 5. Sectional drawing, FIG. 7 is a perspective view of a bobbinless coil that can be wound, and FIG. 8 is a perspective view of another bobbinless coil that can be wound.
FIG. 9 is an explanatory view showing a winding state in a conventional winding machine. 11,111 ... Flange member, 12,112 ... Flange member, 13,113
… Core member, 17,117… Dent, 23,123… Wire, 19,20,
119,120 ... arms, 21,121 ... grooves.

Claims (1)

[Claims] 1. A second flange member for forming a gap between the first flange member and the first flange member, the gap being related to the winding width of the obtained bobbinless coil, and the first flange member. And a core member that is fitted to the second flange member, and the core member is formed into a fork-like end portion that is fitted to the second flange member, and is fitted to the second flange member. The bobbinless coil winding machine is characterized in that the winding start end of the wire is sandwiched by the groove between the arms forming the fork and the second flange member.