JP2949687B2 - Coil and coil manufacturing apparatus and manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0101]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil manufacturing apparatus and method for winding a coil on a coil bobbin such as a choke coil and winding the wire end to a terminal after winding, and a coil.

[0092]

2. Description of the Related Art Conventionally, winding on a coil bobbin of this type is
This has been done by making some modifications to existing automatic winding machines. For example, the iron core combined with the coil bobbin and the terminal block are spatially fixed, and the coil bobbin is configured to be rotationally driven by a driving gear that meshes with a gear formed on the outer periphery of the coil bobbin. After hooking on the notch, the wire on the cut hold side is cut by a cutter, and the coil bobbin is rotated by a drive gear to perform winding. At this time, the winding start wire cut by the cutter is bent into an arc shape during winding by the iron core or the inner surface of the terminal block outside the coil bobbin and fits in the storage groove.

However, in this method, the wire end cannot be automatically tied to the terminal at the start of winding. Therefore, it is necessary to manually wind the wire end again after winding by an automatic winding machine. Has become.

Further, after winding, the coil bobbin must be removed from the winding machine and the coil wound must be left undisturbed until the lashing, so that the wound wire is loosened and the cost is reduced. A quality defect has arisen.

If the wire is thinner than the distance between the coil bobbin and the inner wall of the terminal block, the winding start wire (the end of the storage line) may protrude from the storage groove, and the wire is wound between the coil hobbin and the terminal block wall. There is a disadvantage that the end of the wire is pinched and forcibly bent, and thereafter the end of the wire cannot easily enter the empty nozzle and cannot be automated.

[0086]

SUMMARY OF THE INVENTION In view of the foregoing, the present invention provides a manufacturing apparatus and a method capable of automatically performing winding up to the end of the winding end without removing the coil from the winding machine after winding. The main purpose is to make proposals.

Another object of the present invention is to propose a coil in which the tip of the storage wire does not bend even when the winding wire is thin.

[0098]

According to the present invention, there is firstly provided a coil bobbin having a wire storage groove for accommodating a winding start wire end,
The wire end raising claw, which is in contact with the outer periphery of the coil bobbin, comprises an empty nozzle for accommodating the wire end, and coil bobbin rotating means, wherein the wire end raising claw has a groove formed at a position corresponding to the storage groove and the empty nozzle has a claw. The apparatus is characterized in that it is set at an initial position corresponding to the groove of the above, the wire end is inserted into the nozzle along the groove of the claw by the coil bobbin rotating means, and the nozzle is rotated to the terminal of the coil bobbin so as to be released. Secondly, the coil bobbin includes a coil bobbin in which a wire storage groove for storing a winding start wire end is formed, a wire end raising claw in contact with the outer periphery of the coil bobbin, an empty nozzle for storing the wire end, and coil bobbin rotating means. A groove is formed at the position corresponding to the wire storage groove on the wire end raising claw, and the empty nozzle is set at the initial position corresponding to the groove of the claw, and the wire end is set to the groove of the claw by the coil bobbin rotating means. In the manufacturing apparatus in which the wire is inserted into the nozzle and the nozzle is rotated to the terminal of the coil bobbin, the driving means for retracting the claw to a position where the rotation of the nozzle is not hindered when the wire end is inserted into the nozzle is provided. Thirdly, the manufacturing apparatus is characterized in that a winding start wire end is fixed, a wire is hung on a cutout of a coil bobbin having a gear formed on the outer periphery, and the coil bobbin is driven to rotate and wound, Manufacturing method characterized in that the winding start wire is cut to a length required for winding after winding, the wire end is guided to a nozzle, and the nozzle is rotated around the center of the terminal to wind the winding start wire. And
Fourthly, the winding start wire end is fixed, a wire is applied to the notch of the coil bobbin having a gear formed on the outer periphery, the coil bobbin is driven to rotate and wound, and the length required for winding the winding start wire after winding. Then, the wire end was guided between the nozzle and the coil bobbin, and was guided to the groove of the claw to guide the nozzle, and the nozzle was rotated around the center of the terminal to wind the winding start wire. Fifth, in a coil coil bobbin in which a storage groove is formed, a mounting terminal block, and a coil in which the wire is wound, a tip is formed when the wire is wound around the coil bobbin. In order to prevent the terminal block from being caught in the gap between the terminal block and the coil bobbin, a protrusion is formed on the terminal block at a position close to the wire storage groove so as to prevent bending of the tip.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an assembly diagram of a choke coil (hereinafter referred to as a work) to which the present invention is applied.
FIG. Cylindrical coil bobbin 1 (1
a, 1b), a winding groove 2 for winding a wire rod on the outer circumference;
A notch 3 for hooking the winding start of the wire, a wire storage groove 4 for storing the wire end of the hooked winding start wire, and a gear 5 for driving the coil bobbin 1 to rotate from outside are formed. As shown in FIG. 2, the coil bobbin is divided along its axial direction, and is assembled so as to sandwich the center foot 7 of a "-" shaped iron core (hereinafter referred to as an iron core) 6, and further, the assembled coil bobbin 1 is a terminal block 9 having terminals 8 for soldering and fixing to a printed circuit board (hereinafter referred to as terminals).
1 and 2 as shown in FIG.

The present invention is an apparatus for automatically shaping a terminal after winding a wire on such a work to the terminal 8.

FIG. 3 is a diagram showing an example of a winding method of the pre-rolling process. The iron core 6 combined with the coil bobbin 1 and the terminal block 9 are spatially held, and the coil bobbin 1 is rotationally driven by a driving gear 10 meshing with a gear 5 formed on the outer periphery of the coil bobbin 1, and a three-dimensional space is formed by a servo motor or the like. The wire rod 12 can be freely moved by the winding nozzle 11.
Is hooked on the Bohin notch 3 and then cut and hold 13
The wire on the side is cut by a cutter 14, and the coil bobbin 1 is rotated by the drive gear 10 to perform winding.

In this case, the winding start wire 15 cut by the cutter 14 is regulated by the iron core 6 and the inner surface of the terminal block 9 outside the coil bobbin 1 when it has an appropriate length, and is bent into an arc shape during winding. It fits in the storage wire groove 4.

However, when the wire 15 is long, as shown in FIG. 11, the wire 15 protrudes from the wire storing groove 4, and the end of the wire 15 is sandwiched between the terminal block 9 and the coil bobbin 1 and bent. Therefore, as shown in FIG. 12, a projection 31 is provided on the inner wall of the terminal block 9. Since the protrusion 31 only needs to be able to prevent the bending as shown in FIG. 11, the protrusion 31 has a structure in which it is adjacent to the gap between the terminal block 9 and the coil bobbin 1 and is larger than the gap dimension. The positional relationship between the heights of the protrusions 31 is formed above the terminal block 9. In this case, as shown in FIG. 13, there are two winding locations and two storage groove 4,
There are a total of four locations on each side.

FIG. 13 shows the coil and the storage groove of the coil bobbin.
The positional relationship is as follows.

Therefore, as shown in FIG.
When the tip is long and thin when it is wound into the storage groove 4 after cutting the terminal block 5, the terminal block 9 is bent as shown in FIG. 11.
Is located between the coil bobbin 1 and the coil bobbin 1. However, since the protrusion 31 is provided, the protrusion 31 prevents the protrusion from being inserted into the gap between the terminal block 9 and the coil bobbin 1.

FIG. 4 is a block diagram showing an embodiment of the present invention. Iron core 6 and terminal block 9 combined with coil bobbin 1
Are spatially held by other means (not shown) as shown in FIG. A driving gear 10 meshing with a gear 5 formed on the outer periphery of the hobbin 1 is driven to rotate by a servo motor 11.

On the other hand, the lead wire supply side is a Z-axis plate 1
8 is a base 61 by the motors 19a, 19b and 19c.
Are provided so as to be freely movable in three directions of X-axis, Y-axis, and Z-axis.
Cutter 14, claw which causes winding start line (hereinafter referred to as claw) 1
6, an empty nozzle 17 is provided. Z axis plate 18
Is controlled to be movable in three axial directions via ball screws and linear guides.

A vertical streak groove 20 is dug in the claw 16, and the claw 16 is provided so that the groove 20 is perpendicular to the axis (horizontal direction) of the coil bobbin 1. And claws 16
As shown in FIG. 5, is configured to be rotated from a vertical position to a horizontal position by a motor 23 together with a rotating rod 22.

Further, at the end (upper end in the figure) of the groove 20 of the claw 16, an empty nozzle 17 whose axis coincides with the groove 20 in the same direction is provided with a rod 6.
2 to extend therethrough. The winding nozzle 11 is attached to the Z-axis plate 18 in parallel with the extension direction (vertical direction) of the empty nozzle 17.

6 to 10 are explanatory diagrams of the operation of the present invention. FIG. 6 shows the time when the winding described in FIG. 3 is completed. The rotation of the coil bobbin 1 is stopped where the winding start wire end 21 faces upward. In this case, as described above, even if a wire having a diameter smaller than the gap between the terminal block 9 and the coil bobbin 1 is used, the tip 21 is not bent, so that the tip 21 can be easily inserted into the nozzle 17 without any adjustment. Become.

In this state, the nail 16 is moved as shown in FIG.
The Z-axis plate 18 is brought into contact with the outer periphery of the coil bobbin 1.
At this time, the positions of the groove 20 of the claw 16, the wire storage groove 4 of the coil bobbin 1, and the axial direction of the coil bobbin 1 are aligned.

In this state, the drive gear 10 is rotated in the direction opposite to the direction of winding (in the direction of the arrow in FIG. 6). Accordingly, the coil bobbin 1 also rotates, and the wire end 21 hits the groove 20 of the claw 16 as shown in FIG. When the rotation is further continued in the same direction, as shown in FIG. 8, the winding start wire end 21 expands in the middle, but hits the inner surface of the terminal block 9 and does not expand any more. Accordingly, it travels along the groove 20 and heads toward the upper nozzle 17.

As the rotation is further continued, the wire ends 21
0, and is led to the mouth of the empty nozzle 17 and the empty nozzle 17
And the state shown in FIG. 9 is obtained. At this point nail 16
At a position where it does not interfere with the coil bobbin 1 and the empty nozzle 17.
It is rotated by the motor 23 and moved, and as shown in FIG. To rotate the empty nozzle 17 around the terminal 8,
As described above, this is realized by the circular motion of the Z-axis plate 18 by the motors 19a and 19b.

At this time, in the embodiment, the wire end 20 is free and the back tension is not applied, but the wire is tangled by this method when the wire diameter is 0.3 mm or more (when the inner diameter of the nozzle is 1.0 mm). Below this, the wire may not be plastically deformed. In this case, the line end 2 coming out from above the empty nozzle 17
What is necessary is to hold | grip 1 with a chuck | zipper etc., and to perform a tangle with the back tension being applied upward.

[0025]

As described above, according to the present invention, there is provided a coil bobbin having a storage groove for accommodating a winding start wire end,
The wire end raising claw, which is in contact with the outer periphery of the coil bobbin, comprises an empty nozzle for accommodating the wire end, and coil bobbin rotating means, wherein the wire end raising claw has a groove formed at a position corresponding to the storage groove and the empty nozzle has a claw. It was set to the initial position corresponding to the groove of, the wire end was inserted into the nozzle along the groove of the claw by the coil bobbin rotating means, and the nozzle was rotated to the terminal of the coil bobbin,

When the rear end of the winding wire is to be twisted, only by rotating the coil bobbin, it is possible to complete the preparation for inserting the nozzle into the nozzle as the twisting means.

According to the present invention, a coil bobbin having a wire storage groove for accommodating a winding start wire end, a wire end raising claw in contact with the outer periphery of the coil bobbin, an empty nozzle for accommodating the wire end, and a coil bobbin rotating means A groove is formed at a position corresponding to the wire storage groove in the wire end raising claw, and the empty nozzle is set at an initial position corresponding to the groove of the claw, and the coil end is moved along the groove of the claw by the coil bobbin rotating means. In the manufacturing apparatus in which the nozzle is inserted into the nozzle and the nozzle is rotated to the terminal of the coil bobbin, the driving means is provided so that when the wire end is inserted into the nozzle, the claw is retracted to a position where the rotation of the nozzle is not hindered. So

It is particularly effective in a structure in which the nozzle and the claw are integrated with each other so that the lashing line does not come into contact with the claw during the rotation of the nozzle.

According to the present invention, the end of the winding start wire is fixed, a wire is applied to the notch of the coil bobbin having a gear formed on the outer periphery, the coil bobbin is driven to rotate, and the winding is started. Was cut to the length required for lashing, the end of the wire was guided to the nozzle, and the nozzle was rotated around the center of the terminal so that the wire started to wrap,

Since the winding start wire can be tied without removing the work after winding from the winding machine, there is no loosening, it can be easily automated, and it is effective in terms of both quality and cost. Law can be provided.

Further, according to the present invention, the end of the winding start wire is fixed, a wire is applied to the notch of the coil bobbin having a gear formed on the outer periphery, the coil bobbin is driven to rotate, and the winding is started. Cut the wire end to the required length, guide the wire end to the groove of the claw that is provided between the nozzle and the coil bobbin, guide it to the nozzle, rotate the nozzle around the center of the terminal and turn the winding start wire Because I made it go

It is easy to insert the wire necessary for the shaving into a thin nozzle, and since the winding wire can be shaved without removing the work after winding from the winding machine, there is no loosening of the winding. Can also be easily automated.

Further, according to the present invention, in the coil bobbin in which the storage groove is formed, the mounting terminal block, and the coil in which the wire is wound, when the wire is wound around the coil bobbin, the tip is formed by the terminal block and the coil bobbin. Since the terminal block at the position close to the storage groove is formed with a protrusion to prevent bending at the end, to prevent it from being caught in the gap between

Even if a wire having a small wire diameter and being easily bent is used,
This has the effect of preventing the tip from being bent by being caught in the gap between the terminal block and the terminal block when it cannot be stored in the wire storage groove.

[Brief description of the drawings]

FIG. 1 is a diagram showing one embodiment of a coil to which the present invention is applied;

FIG. 2 is an exploded perspective view,

FIG. 3 is a diagram showing an example of a winding method;

FIG. 4 is a view showing an embodiment of the apparatus of the present invention;

FIG. 5 is an explanatory view of a claw retreating means;

FIG. 6 to FIG. 10 are process diagrams showing an example of a ganging method;

FIG. 11 is a diagram for explaining a storage wire end;

FIG. 12 is a view showing one embodiment of a terminal block;

FIG. 13 is a plan view showing the relationship between the terminal block and the bobbin.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Coil bobbin, 3 ... Notch, 4 ... Storage groove, 8 ... Terminal, 10 ... Gear, 16 ... Claw, 17 ... Empty nozzle, 18 ... Z
Shaft plate, 19 ... motor, 20 ... groove, 21 ... wire end, 3
1 ... projection

Claims (5)

(57) [Claims] A coil bobbin having a storage groove for accommodating a winding start wire end; a wire end raising claw in contact with an outer periphery of the coil bobbin; an empty nozzle for accommodating the wire end; A groove is formed in the end raising claw at a position corresponding to the storage groove and the empty nozzle is set at an initial position corresponding to the groove of the claw, and the wire end is inserted into the nozzle along the groove of the claw by the coil bobbin rotating means. A coil manufacturing apparatus characterized in that the nozzle is rotated by rotating the nozzle to a terminal of the coil bobbin. 2. A coil bobbin having a wire storage groove for accommodating a winding start wire end, a wire end raising claw in contact with an outer periphery of the coil bobbin, an empty nozzle for accommodating the wire end, and coil bobbin rotating means. A groove is formed in the end raising claw at a position corresponding to the storage groove and the empty nozzle is set at an initial position corresponding to the groove of the claw, and the wire end is inserted into the nozzle along the groove of the claw by the coil bobbin rotating means. In the manufacturing apparatus, the nozzle is rotated to the terminal of the coil bobbin, and the driving means is provided for retracting the claw to a position where the rotation of the nozzle is not hindered when the wire end is inserted into the nozzle. An apparatus for manufacturing a coil. 3. The winding start wire end is fixed, a wire is applied to a notch of a coil bobbin having a gear formed on the outer periphery, the coil bobbin is driven to rotate and wound, and the winding start wire is necessary for winding. A method for manufacturing a coil, comprising cutting the wire into a length, guiding the wire end to a nozzle, and rotating the nozzle around the center of the terminal to wind the wire at the beginning of winding. 4. A winding start wire end is fixed, a wire is applied to a notch of a coil bobbin having a gear formed on an outer periphery, the coil bobbin is driven to rotate and wound, and a winding start wire necessary for winding is wound after winding. Cut to length, raise the wire end provided between the nozzle and the coil bobbin, guide it to the groove of the claw, guide it to the nozzle,
A method for manufacturing a coil, characterized in that a nozzle is rotated about the center of a terminal to wind a winding start wire. 5. A coil bobbin in which a wire storage groove is formed, a mounting terminal block, and a coil in which a wire is wound, a tip of which is sandwiched in a gap between the terminal block and the coil bobbin when the wire is wound around the coil bobbin. A coil, wherein a protrusion for preventing bending of a tip is formed on a terminal block at a position close to a storage wire groove in order to prevent the coil from being bent.