JP5267658B2 - Winding device - Google Patents

Description

  The present invention relates to a winding device for winding a wire around an electronic component such as a chip coil.

  Conventionally, as a winding device for winding a wire around a bobbin, there is one described in Patent Document 1. The winding device includes a wire rod supply unit that supplies a wire rod and a wire rod winding unit around which the wire rod is wound. The wire rod supply unit includes a nozzle that regulates a supply position of the wire rod, and the wire rod winding unit is a wire rod. A winding device comprising a spindle on which a bobbin around which a bobbin is wound is mounted, a rotating mechanism for rotating the spindle, and a moving mechanism for moving the spindle in a three-dimensional direction, facing a conveying mechanism for conveying the bobbin. is there. The wire supply unit is provided with a moving mechanism for moving the nozzle in a three-dimensional direction.

  Patent Document 1 describes that the nozzle is moved when the start and end portions of the wire (wire) are wound around the terminals of the pobbins. However, since the nozzle only guides the wire, the terminal portion of the wire cannot be wound around the terminal with tension, and an automatic auxiliary mechanism for assisting winding is separately required. In addition, when the terminal position is changed due to change of product type, or when terminal processing is performed on parts that do not protrude such as chip coils, it is also necessary to change the automatic auxiliary mechanism, which requires significant design changes. And Furthermore, since the spindle connected to the rotational drive system is moved in a three-dimensional direction, there is a disadvantage that the equipment becomes large and complicated.

  In Patent Document 2, a winding is inserted between chuck claws for chucking a core, and a cutter blade is moved with respect to the chuck claw so that the end of the winding is inserted into the axis of the chuck claw. A winding machine is disclosed in which a cutter mechanism for cutting with an edge and a cutter blade is provided.

  In the case of Patent Document 2, a drive device for moving the cutting blade is required, and a space for incorporating this drive device is required. Therefore, it is necessary to perform a cutting operation on a stage different from the winding stage using an index table or the like, and there is a problem that the apparatus becomes complicated and large. Moreover, since the cutting blade is moved, there is a possibility that the cutting position is shifted from the core.

JP-A-10-335166 JP-A-6-132152

An object of the present invention is to provide a winding device that can position a wire with high accuracy and can flexibly cope with a change in product type.
Another object of the present invention is to provide a winding device that can be cut with a simple mechanism without causing a shift in the cut position of the start and end portions of the wire.

The winding device according to the present invention has a flange portion at both ends of the core , and has a winding drum portion between both flange portions, winds a wire around the winding drum portion, and both ends of the wire. Is arranged on the outer surface of the one collar portion, the spindle chuck for chucking the one collar portion of the core in a direction perpendicular to the axis of the core, and the spindle chuck at a fixed position. A rotation drive mechanism for rotating around the axis of the wire, a wire nozzle for supplying the wire while guiding the wire, a wire chuck for chucking / releasing the wire, and a first operating mechanism for moving the wire nozzle in three axial directions; A second actuating mechanism for moving the wire chuck in three axial directions and positioning a wire stretched between the wire nozzle and the wire chuck to a predetermined position of the core. , The spindle chuck has a support surface for clamping between the outer surface of the one flange portion of said wire core and cutting blade secured adjacent to the support surface, the said core With the wire positioned on the outer surface of one collar portion , the wire is sandwiched between the support surface of the spindle chuck and the outer surface of the one collar portion of the core. In this state, the wire chuck is attached to the spindle chuck. By moving in the direction, the wire is pressed against the cutting blade and cut.

  In the winding device of the present invention, the wire is wound around the core by rotating the spindle chuck at a fixed position and moving the wire nozzle for supplying the wire. Since the spindle chuck only rotates at a fixed position around the axis of the core, there is no need for a mechanism for moving the spindle chuck rotation drive mechanism in the three-axis direction, so the rotation drive mechanism is simplified and high-precision rotation is achieved. And downsizing of the apparatus can be realized. By the way, when processing the start line part and the end line part of the wire, it is necessary to accurately position the wire at a predetermined position of the core (for example, an electrode part at one end). In the present invention, a wire chuck is used in addition to the wire nozzle, and the wire nozzle and the wire chuck are respectively moved in three axial directions by the operation mechanism. Since the wire is stretched between the wire nozzle and the wire chuck, the wire can be accurately positioned at a predetermined position of the core while maintaining a predetermined tension. Even if there is a change in the core type, etc., it is not necessary to change the combination of the wire nozzle and wire chuck, and it is only necessary to change the position and amount of movement of those operating mechanisms. it can.

  In processing the wire start line, the wire chuck is used to chuck the wire tip, and the wire nozzle and wire chuck are moved so that the wire start line is positioned at one end of the core. When winding, the wire nozzle is reciprocated in the axial direction of the core while rotating the core at a fixed position by the spindle chuck, and the wire nozzle after the winding is finished by the wire chuck is processed when the wire end line is processed. The wire between the core and the core may be chucked, and the wire chuck may be moved to position the end of the wire at one end of the core. By operating in this way, the start and end portions of the wire can be accurately positioned with respect to the core without causing the wire to sag, and the wire can be accurately wound around the winding body of the core. I can make a line.

The spindle chuck has a support surface for sandwiching the wire between one end side surface of the core and a cutting blade fixed adjacent to the support surface, and the wire is positioned on the one end side surface of the core. It is desirable to hold the wire between the support surface of the spindle chuck and the side surface of the one end of the core, and move the wire chuck in the spindle chuck direction in this state to press the wire against the cutting blade and cut it. In this case, since the cutting blade for cutting the wire is fixed to the spindle chuck, a drive mechanism for driving the cutting blade is not necessary, and the positional relationship between the cutting blade and the core is fixed, and the cutting position is fixed. No deviation occurs. Since the wire is sandwiched between the spindle chuck and the core, the wire after cutting does not loosen.

Effects of preferred embodiments of the invention

  As described above, according to the present invention, with respect to the spindle chuck that rotates at a fixed position, the wire nozzle and the wire chuck are moved in the three axial directions to perform the wire winding process, the start line portion, and the end line portion. Since terminal processing can be performed, all winding processes can be performed in one stage, and it is possible to respond flexibly to changes in product type. In addition, the spindle rotation drive mechanism can be simplified and high-precision rotation can be realized.

It is sectional drawing of an example of the winding apparatus which concerns on this invention. It is a perspective view of the principal part of the winding apparatus shown in FIG. It is a perspective view of the fixed claw of a spindle chuck. It is a perspective view of the chip coil after the end of winding. It is explanatory drawing which shows the wire cutting operation | movement by a cutting blade and a wire chuck. It is operation | movement explanatory drawing of the winding method which concerns on this invention. It is a perspective view which shows a mode that the starting line part of the wire was positioned to the core. It is a perspective view which shows a mode that the end line part of the wire was positioned to the core.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  1 to 3 show an example of a winding device according to the present invention. As shown in FIG. 2, the core 1 has square flange portions 2 and 3 at both ends, a winding drum portion 4 between both ends, and a wire 5 is wound around the winding drum portion 4. Thus, the chip coil C as shown in FIG. 4 is manufactured. Here, the axis of the core 1 is the X axis, the vertical axis is the Z axis, and the axis orthogonal to the X axis and the Z axis is the Y axis. As shown in FIG. 4, both end portions 5a and 5b of the wire 5 are pulled out to the back side of one collar portion 3 and soldered to an electrode (not shown).

  The winding device generally includes a core chuck 10, a spindle chuck 20, a rotary drive mechanism 26 that rotates the spindle chuck 20 around the X axis, a linear drive mechanism 31 that moves the spindle chuck 20 in the X axis direction, and a wire 5. It is comprised with the wire supply mechanism 40 to supply.

  The core chuck 10 includes a pair of chuck claws 11 and 12 that chuck the collar portion 2 of the core 1 in the Z-axis direction. In this embodiment, one chuck claw 11 is a fixed claw, and the other chuck claw 12 is a movable claw that moves in a direction opposite to the fixed claw, but may be configured by a pair of movable claws. The inner surface 11a of the chuck claw 11 is a reference surface in the Z direction. The chuck nail 11 on the fixed side is provided with a support portion 11b that supports the bottom surface of the collar portion 2 of the core 1, and a suction hole 13 for air suction of the core 1 is formed in the support portion 11b. As shown in FIG. 1, the chuck claw 11 is attached to the supply member 16 via a bearing 15, so that the chuck claw 11 is rotatable about the X axis. The movable chuck claw 12 is attached to the supply member 16 so as to be rotatable about a shaft 12a and to be opened and closed in the Z direction by an opening / closing mechanism (not shown). The supply member 16 is moved to convey the core 1 between the core supply / removal position and the winding position shown in FIG. In this embodiment, the movable side chuck claw 12 is attached to the supply member 16, and the chuck claw 12 does not rotate integrally with the fixed side chuck claw 11, but the chuck claw 12 rotates integrally with the chuck claw 11. 11 may be attached.

  The spindle chuck 20 is disposed so as to face the core chuck 10, and the spindle chuck 20 and the core chuck 10 are adjusted in advance so that their rotation centers coincide with each other according to mechanical accuracy. As shown in FIG. 2, the spindle chuck 20 includes a pair of chuck claws 21 and 22 that chuck the collar portion 3 of the core 1 in the Y-axis direction. In this embodiment, one chuck claw 21 is a fixed claw, and the other chuck claw 22 is a movable claw that moves in a direction opposite to the fixed claw, but may be constituted by a pair of movable claws. The inner surface 21 a of the chuck claw 21 is a reference surface in the Y direction, and the bottom surface 21 b of the chuck claw 21 is a support surface that supports the bottom surface of the collar portion 3 of the core 1. The movable chuck claw 22 is attached to the fixed claw 21 together with an opening / closing mechanism (not shown). On the lower edge side (Z direction) of the support surface 21b of the chuck claw 21, as shown in FIG. 3, an inclined surface 21c or a step surface which is recessed from the support surface 21b is formed, and the cutting blade 23 is fixed to the inclined surface 21c. . The cutting blade 23 has a function of cutting the wire 5 in cooperation with a wire chuck 42 described later. In addition, when the wire 5 is clamped between the support surface 21b and the flange portion 3, the support surface 21b and the tip position of the cut blade 23 are aligned at substantially the same height so that the tip of the cut blade 23 can come into contact with the wire 5. It is good.

  As shown in FIG. 1, a rotation shaft 24 extending in the X-axis direction is connected to the chuck claw 21, and this rotation shaft 24 is connected to a drive shaft 26 a of a motor (rotation drive mechanism) 26 via a coupling 25. Yes. The coupling 25 transmits rotational force between both shafts, but is slidable in the axial direction. An intermediate portion of the rotating shaft 24 is rotatably supported by a bearing holder 28 provided with a bearing 27, and the bearing holder 28 is supported by a slider 29 so as to be slidable in the X-axis direction. The bearing holder 28 is connected to a cylinder (linear drive mechanism) 31, and by driving the cylinder 31, the bearing holder 28 and the rotary shaft 24 can be reciprocated integrally in the X-axis direction. A compression spring 32 is inserted around the rotary shaft 24, and this spring 32 is disposed between the spindle chuck 20 and the bearing holder 28, and biases the spindle chuck 20 in a direction facing the core chuck 10. doing. A stopper 33 is fixed to the rear side of the bearing holder 28 of the rotary shaft 24, and the amount of protrusion of the spindle chuck 20 from the bearing holder 28 is defined by the stopper 33 coming into contact with the bearing holder 28.

  As shown in FIG. 2, the wire supply mechanism 40 includes a wire nozzle 41 that guides the wire 5 and a wire chuck 42 that chucks / opens the wire 5. A wire 5 is continuously supplied to the wire nozzle 41 from a wire supply source (not shown). Actuating mechanisms 43 and 44 are connected to the wire nozzle 41 and the wire chuck 42, respectively, to move in three axial directions. When chucking the collar portion 3 of the core 1 with the spindle chuck 20, as shown in FIG. 5A, the wire chuck 42 chucks the start end portion of the wire 5, and between the wire nozzle 41 and the wire chuck 42. The stretched wire 5 is positioned in advance on the back surface side of the flange portion 3 of the core 1, and the wire 5 is sandwiched between the support surface 21 b of the spindle chuck 20 and the flange portion 3 of the core 1. In this state, the wire 5 can be broken by the cutting blade 23 by moving the wire chuck 42 in the X-axis direction as shown in FIGS. At this time, the wire chuck side portion of the wire 5 enters the inclined surface 21c of the spindle chuck 20, so that the wire 5 is strongly pressed against the cutting blade 23 and the wire 5 is easily cut. Since the cutting blade 23 is fixed, no deviation of the cutting position with respect to the core 1 occurs, and the tension of the wire 5 is not applied to the wire nozzle 41, so that the wire 5 does not stretch or slack. Even when the end portion of the wire 5 is processed after the wire 5 is wound around the core 1, the wire 5 is sandwiched between the support surface 21 b of the spindle chuck 20 and the collar portion 3 of the core 1, and the wire chuck 42. Is moved in the X axis direction, the wire 5 can be torn off by the cutting blade 23.

  Here, an operation procedure by the winding apparatus having the above-described configuration will be described with reference to FIG. In FIG. 6, for ease of explanation, the chucking direction of the core chuck 10 and the chucking direction of the spindle chuck 20 are the same direction (Z direction), but are actually orthogonal.

  First, the core 1 is supplied to a position facing the spindle chuck 20 in a state where the collar portion 2 of the core 1 is chucked in the Z direction by the core chuck 10 as shown in FIG. At this time, the core chuck 10 may hold the core 1 by air suction. At this time, the wire chuck 42 is located above the core chuck 10 and chucks the starting end of the wire 5.

  Next, as shown in (b), the wire chuck 42 that has chucked the wire 5 is moved downward from the core chuck 10, and the wire 5 is pulled out from the wire nozzle 41. Then, the wire nozzle 41 and the wire chuck 42 are moved in the X direction, and the starting line portion of the wire 5 is positioned at a predetermined position on the back surface of the collar portion 3 of the core 1 as indicated by a broken line. FIG. 7 shows a state in which the starting line portion of the wire 5 is positioned at a predetermined position of the core 1.

  Next, as shown in (c), the spindle chuck 20 is advanced, and the wire 5 is sandwiched between the support surface 21 b of the spindle chuck 20 and the flange portion 3 of the core 1. At this time, it is desirable that the wire 5 is sandwiched between the cutting blade 23 built in the spindle chuck 20 and the collar portion 3.

  Next, as shown in (d), the core chuck 10 is opened, and the core 1 is chucked in the Y direction by the spindle chuck 20 to perform positioning in the Y direction. At this time, air suction of the core chuck 10 is continued, and it is preferable that the core 1 is not displaced while the core 1 is gripped from the core chuck 10 to the spindle chuck 20. Since the core 1 is first positioned in the Z direction by the core chuck 10 and then positioned in the Y direction by the spindle chuck 20, the core 1 is accurately positioned so that the axis of the core 1 is coaxial with the X axis. From this state, the wire chuck 42 is moved in the X direction in the direction of the cutting blade 23 built in the spindle chuck 20, and the wire 5 is cut so as to tear.

  Next, as shown in (e), the spindle chuck 20 is rotationally driven at a fixed position, and the wire 5 is wound around the core 1 while the wire nozzle 41 is reciprocated in the X direction. At that time, the core chuck 10 rotates following the rotational driving force of the spindle chuck 20. Since the core 1 is held by air suction of the core chuck 10 and is pressed in the X direction by the pressing force of the spindle chuck 20, the core 1 is wound in a state where both ends are supported. Therefore, even if the tension of the wire 5 acts, the inclination of the core 1 with respect to the rotation axis can be suppressed, and the shake of the core 1 can be suppressed. Note that the wire chuck 42 moves upward from the spindle chuck 20 after completion of the wire start line cutting, and stands by at a position that does not interfere with the winding operation.

  After the winding of the core 1 is completed, as shown in (f), the core 1 is chucked by the core chuck 10 while the spindle chuck 20 is opened, and the spindle chuck 20 is moved backward.

  Next, as shown in (g), the wire chuck 42 moves in the lateral direction to chuck the wire 5 between the core 1 and the wire nozzle 41.

  Next, as shown in (h), the wire chuck 42 moves downward from the core chuck 10 and moves in the XY direction, and the end portion of the wire 5 wound around the core 1 is replaced with the back surface of the collar portion 3 of the core 1. Is positioned at a predetermined position. At this time, the wire nozzle 41 similarly moves in the three-axis directions so that the wire 5 between the wire nozzle 41 and the wire chuck 42 does not interfere with the spindle chuck 20. FIG. 8 shows a state in which the end portion of the wire 5 is positioned at a predetermined position on the back surface of the collar portion 3 of the core 1.

  Next, as shown in (i), the spindle chuck 20 is advanced again, the core 1 is chucked by the spindle chuck 20, and the end portion of the wire 5 is sandwiched between the support surface 21b and the collar portion 3 of the core 1. In this state, the wire chuck 42 is moved in the X-axis direction, and the end portion of the wire 5 is cut by the cutting blade 23.

  Finally, as shown in (j), the spindle chuck 20 is opened and retracted, and the wound core 1 (chip coil C) chucked by the core chuck 10 is conveyed to another take-out position.

  In the above-described embodiment, an example in which the starting and ending portions of the wire are positioned on the back surface of one collar portion as in the case of a chip coil has been explained. The winding device of the invention can be applied. In particular, since the tip of the wire can be moved in a three-dimensional direction by the wire chuck, the wire can be wound around the terminal without causing slack in the wire.

  In the above embodiment, both ends of the core are supported by the spindle chuck and the core chuck at the time of winding. However, at the time of winding, the core chuck may be separated from the core and only one end of the core may be chucked by only the spindle chuck.

  In the above embodiment, the cutting blade is built in the spindle chuck, but a movable cutting blade may be provided separately from the spindle chuck. In that case, it is not necessary to move the wire chuck and press the wire against the cutting blade and tear it off, and the wire stretched between the wire nozzle and the wire chuck can be cut with the cutting blade.

  In the above embodiment, an example is shown in which after one end of the core is chucked in the Z direction with a core chuck and supplied, the other end of the core is gripped in the Y direction with a spindle chuck to perform winding. If the center hole is provided in the spindle chuck, a shaft portion inserted into the center hole of the core may be provided on the spindle chuck, and the winding may be performed in a state where the core is inserted and supported by the shaft portion of the spindle chuck.

1 Core 2, 3 collar part (both ends)
4 Winding body 5 Wire 10 Core chuck 13 Suction hole 20 Spindle chuck 21 Chuck claw (fixed side)
21b Support surface 22 Chuck claw (movable side)
23 Cutting blade 24 Rotating shaft 26 Motor (Rotation drive mechanism)
31 cylinder (linear drive mechanism)
32 Spring 40 Wire supply mechanism 41 Wire nozzle 42 Wire chuck 43 Wire nozzle operating mechanism 44 Wire chuck operating mechanism

Claims (2)

It has a collar part at both ends of the core , has a winding drum part between the two collar parts, winds a wire around this winding drum part, and connects both ends of the wire to the outer surface of the one collar part. In the winding device arranged in
A spindle chuck for chucking the one collar portion of the core in a direction orthogonal to the axis of the core ;
A rotation drive mechanism for rotating the spindle chuck at a fixed position around the axis of the core;
A wire nozzle for feeding while guiding the wire;
A wire chuck for chucking / releasing the wire;
A first operating mechanism for moving the wire nozzle in three axial directions;
A second actuating mechanism for moving the wire chuck in three axial directions and positioning a wire stretched between the wire nozzle and the wire chuck to a predetermined position of the core;
The spindle chuck has a support surface for sandwiching the wire with the outer surface of the one brim portion of the core, and a cutting blade fixed adjacent to the support surface,
With the wire positioned on the outer surface of the one collar portion of the core, the wire is sandwiched between the support surface of the spindle chuck and the outer surface of the one collar portion of the core, and in this state, the wire A winding apparatus, wherein the wire is pressed against a cutting blade to be cut by moving the chuck in a spindle chuck direction. In processing the starting wire portion of the wire, the wire nozzle is chucked with the wire chuck, and the wire nozzle and the wire are positioned so as to position the starting wire portion on the outer surface of the one collar portion of the core. Move the chuck and
In winding the wire around the core, the wire nozzle is reciprocated in the axial direction of the core while rotating the core at a fixed position by the spindle chuck,
In processing the end portion of the wire, the wire chuck chucks the wire between the wire nozzle after the end of winding and the core, and moves the wire chuck so that the end portion of the wire is the one of the cores. The winding device according to claim 1, wherein the winding device operates so as to be positioned on an outer surface of the flange portion of the flange portion .

Images