JP2001358029A - Coil winding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coil winding machine which can reduce its manufacturing cost by shortening the manufacturing time of a bobbin-less coil. SOLUTION: A first guide 2 is put in a core 13 in an axially movable state and the core 13 is energized by a spring in the protruding direction. A second guide 3 approaches the first guide 2 and core 13 and decides the winding width of a wire in a state where the core 13 is slightly pushed back. The first guide 2 has a clamp and a cutter for the wire and the start line of the wire enters the parallel groove 2a of the guide 2 and is controlled in position. While the core 13 and guides 2 and 3 are integrally rotated, the wire is wound in the space of the winding width.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a winding machine for winding a wire and manufacturing a bobbinless coil.

[0002]

2. Description of the Related Art Conventionally, a winding machine has been widely used for winding a wire for a bobbinless coil. By arranging the coils wound by this winding machine diagonally or radially, a coil portion such as a motor is formed. In order to improve the performance with a limited size of a motor or the like, it is required for a winding machine how many windings can be formed in a limited winding space. To do so, so-called aligned winding, in which adjacent wires are aligned and wound without gaps, is effective.

For this reason, conventionally, as shown in FIG. 9, a winding portion 90 of a winding machine is provided with a winding core 51, a guide 52 and a guide 53 for guiding a wire W (see FIG. 10). Guide 52
The guide 53 and the guide 53 are fixed to rotating shafts 54 and 55, respectively, and are rotated in the same direction at the same rotational speed by a rotating means (not shown). The guide 52 includes a start line storage 52a. The guide 53 is fitted on the outer periphery of the core 51. The core 51 is provided so as to be able to advance and retreat with respect to the guide 53 in the rotation axis direction. The respective rotating shafts 54, 55 are rotatably supported by bearings 57, 58. The guide 53 includes a moving unit (not shown) so that the guide 53 can approach the guide 52. The wire can be held and cut by the wire clamp mechanism 56 attached to the guide 52 side.

FIG. 10 is a view showing a winding process of this winding machine. First, the guide 53 is moved by the moving means.
Approach 2 Then, the core 51 contacts the guide 52. Then, the guide 53 is adjusted in the direction of the rotation shaft 55 to determine the winding width of the core 51. A wire guide mechanism (not shown) feeds the wire W to the winding core 51 while moving in a direction parallel to the rotating shafts 54 and 55 so as to perform aligned winding. At the start of winding, the wire W is stored in the start wire storage portion 52a of the guide 52, so that the start wire S is fixed at an accurate position and can be wound more neatly.

FIG. 11 is a view showing a winding step of the winding machine continued from FIG. When the winding is completed, the wire clamping mechanism 56
Cuts the finish line F. Thereafter, the guide 53 moves in a direction away from the guide 52 together with the coil C. Then, when the core 51 is retracted into the guide 53, the coil C is separated from the guide 53, and the coil C is recovered and the production of one coil C is completed.

[0006]

However, after the winding is completed, the core 51 is moved to the guide 5 in order to remove the coil C.
Since the coil C is moved at the same time as the moving means 3, the coil C is removed and the winding of the next coil C cannot be started until the core 51 returns to the guide 52 side. In addition, the guide 52 having the start wire storage portion 52a and the guide 53 having the fitting portion to the winding core 51 are required to have extremely high positional accuracy and coaxiality in the rotational direction. You. That is,
If the positions of the guides 52 and 53 are incorrect, the start line S and the finish line F of the coil C are unlikely to be in the designed positions. If this is not the case, it takes time to process parts and adjust the assembly of the winding machine, and the winding machine tends to be expensive.

An object of the present invention is to provide a winding machine capable of reducing the manufacturing time of a bobbinless coil and reducing the manufacturing cost of the winding machine itself.

[0008]

In order to solve the above problems, a first configuration of a winding machine according to the present invention is to rotate a wire for forming a coil guided by a wire guide mechanism. A winding machine for winding around a core, wherein a first guide for defining one winding end position in the axial direction of the core and a second guide for defining the other winding end position in the axial direction of the core. The first guide is fitted to the winding core so as to be movable in the axial direction of the winding core, and has a holding portion for holding the terminal wire of the wire. A terminal wire portion defining portion for defining the position of the terminal wire portion of the wire with respect to the core is formed, and the second guide is provided so as to be relatively close to and away from the first guide, and the first guide is moved by the approach movement.
A predetermined winding width based on the distance between the one winding end position and the other winding end position is given to the winding core in cooperation with the guide of the second winding guide. Are relatively separated from the first guide, and the first guide relatively moves in the axial direction with respect to the core, so that the wound coil-forming wire is separated from the core. It is characterized by the following.

Thus, the coil is detached from the core by moving the first guide in the second guide direction. For this reason, the coil can be removed from the winding core at the same time as cutting the finish wire side of the terminal wire, thereby reducing the time. Since the start wire side of the terminal wire is arranged at a fixed position of the winding core and the winding core is provided so as to be fitted to the first guide, the rotation of the first guide stops at any position. However, the start line of the coil can be set at a position as designed.

Further, it is sufficient that the second guide is in contact with the winding core after the start of winding and before the winding of the first layer ends. That is, since the winding core is provided on the first guide side, the second
Winding can be started even if the guide is not in contact with the winding core. Therefore, the time of the winding cycle can be reduced.

The core is urged toward the second guide by an elastic member, and the second guide is elastically pressed against the leading end of the core by the approach movement of the second guide. Alternatively, a predetermined winding width can be formed between the first guide and the first guide which is located in close proximity to the winding core. For example, the second guide contacts the core, and the core is retracted by compressing and contracting the core, and the winding width is determined. That is, the winding width of the winding core is automatically adjusted by the contact of the second guide, and an adjusting mechanism for determining the winding width other than the moving mechanism of the second guide is unnecessary.

The winding machine having such a configuration includes a winding core, a terminal wire holding section, a start wire storing section, and a coil removing means on the first guide side. After removing the coil, the second guide may be moved until the first layer of the next winding ends to determine the winding width. As a result, as described above, the time required to manufacture one coil can be reduced, and the structure for simplifying the structure is reduced because the number of mechanisms for determining the winding width is reduced.

Also, the second guide may be inexpensive and simple in shape, without having to worry about the accuracy of the mating surface between the first guide and the second guide. This eliminates the need for skilled techniques during assembly adjustment and reduces the manufacturing cost of the winding machine.

[0014]

Embodiments of the present invention will be described below with reference to the embodiments shown in the drawings. FIG. 1 is an overall view of a winding machine 100 for a bobbinless coil C of the present invention. The winding machine 100 includes a winding unit 4 including a base 1, a guide 2 as a first guide, and a guide 3 as a second guide, a wire guide mechanism 5, a coil removing unit 6, a winding unit rotating unit 7, It is mainly composed of guide moving means 8. The base 1 supports the winding part 4, wire guide mechanism 5, coil removing means 6, winding part rotating means 7, and moving means 8 for the guide 3.

FIGS. 2 and 3 are enlarged views of the winding section 4. FIG. FIG.
Is an enlarged view of the guide 2 side. Guide 2 is Guide 2
, The wire clamp mechanism 9, the spindle shaft 10, and the core 1
3 mainly. The guide 2 includes a start line storage section 2a which is a terminal line section defining section. The guide 2 is fixed to a guide fixing member 12 via a plurality of shafts 11. The core 13 fitted with the guide 2 is pushed out toward the guide 3 by a spring 14 attached to the guide fixing member 12 together with the slide portion 13 a of the core 13. The cross section of the core 13 may be, for example, a triangle, a circle, an ellipse, or the like in order to match a required product shape. The pushing amount of the core 13 is regulated by the guide supporting member 15.

The guide 2 is provided movably with respect to the guide support member 15. The guide support member 15 is fixed to the spindle shaft 10 with a bolt or the like. Spindle shaft 10
Is rotatably attached to the base 1 via a bearing 16. A push rod 17 as a guide moving member (extruding member) is mounted in the spindle shaft 10 so as to be movable in the axial direction, and can push the guide fixing member 12.
When the push rod 17 is pushed, the guide 2 is pushed out, and the core 13 is covered with the guide 2. In addition, push rod 1
7 is provided with a rotation preventing means such as a key 17a so that it cannot rotate relative to the spindle shaft 10 and can move relatively in the axial direction.

On the outer periphery of the guide support member 15,
A line clamp mechanism 9 is provided. The wire clamp mechanism 9 includes a wire holding clamp 18 and a wire cutting cutter 19. The clamp 18 and the cutter 19 are provided at two places on the clamp support member 20, respectively, so that they can cope with either forward or reverse rotation. Further, the position of the clamp 18 is disposed on the delay side in the rotation direction with respect to the cutter 19, and the housing 2a (the wire W1
The wire W (see FIG. 4) caught by the clamp 18 is disposed at a position where the wire W (see FIG. 4) is disposed in a radial groove or the like into which the main body can be dropped. The clamp support member 20 is pushed out in the guide 3 direction by a spring 21 attached to the guide support member 15, and the movement of the clamp support member 20 in the direction of the spindle shaft 10 is performed by a line clamp moving means (not shown).

As shown in FIG. 3, the guide 3 side is the guide 3
And a spindle shaft 22. The guide 3 is fixed to the spindle shaft 22 with bolts or the like. The spindle shaft 22 is rotatably mounted on a guide base 46 described later via a bearing 23.

Returning to FIG. 1, the wire guide mechanism 5 includes a wire guide motor 24, a ball screw 25, and a wire guide arm 26.
It is mainly composed of The wire guide motor 24 is fixed to the base 1 and a ball screw shaft 25
Rotate a. A wire guide arm 2 is attached to the ball screw nut 25b attached to the ball screw shaft 25a.
6 are attached and provided so that they can move together. The rotation of the wire guide motor 24 allows the wire guide arm 26 to move in a direction parallel to the rotation axes of the guides 2 and 3 via the ball screw nut 25b.

The coil removing means 6 includes a pneumatic cylinder 28
And a push rod (extrusion member) 17. The pneumatic cylinder 28 is fixed to the base 1 and a pneumatic cylinder shaft 28a
The arm 30 is fixed over both so as to connect the push rod fixing member 29 with the arm 30. As the pneumatic cylinder shaft 28a moves forward and backward, the push rod fixing member 29 is connected to the push rod 17 via the bearing 31 so that the guide 2 can move in the direction of the spindle shaft 10 of the guide 2. The push rod 17 is provided so as to push the guide 2 through the arm 30 by the pneumatic cylinder 28.

The winding section rotating means 7 includes a spindle shaft rotating motor 32, timing belts 33 and 34, a pulley 3
5, 36, 37, 38 and a transmission shaft 39. The spindle shaft rotation motor 32 is fixed to the base 1, and rotates the transmission shaft 39 via a shaft coupling (coupling) 40. The transmission shaft 39 is rotatably attached to the base 1 via a bearing 41, and two pulleys 35 and 37 are attached. Two pulleys 3
5 and 37 rotate the pulleys 36 and 38 attached to the spindle shafts 10 and 22 of the guides 2 and 3 via the timing belts 33 and 34, and rotate the guides 2 and 3 in the same direction at the same rotation speed. Rotate.

The moving means 8 of the guide 3 mainly includes a guide moving motor 42, a ball screw 43, and a linear guide 44. The guide moving motor 42 rotates the ball screw shaft 43a via the shaft coupling 45. Ball screw nut 43b attached to ball screw shaft 43a
A guide base 46 is provided to support the spindle shaft 22 to which the guide 3 is attached, and a linear guide 44 is attached below the guide base 46. The linear guide 44 is provided movably on the linear rail 47. The ball screw shaft 43 is driven by the guide moving motor 42.
a rotates, the linear guide 44 and the guide base 46 are connected to the spindle shaft 22 via the ball screw nut 43b.
The guide 3 moves in a direction parallel to the direction of the arrow.

Although not shown, the guide 2 and the guide 3
Between them, a coil discharging mechanism is provided. In the coil discharging mechanism, a contact plate for contacting the coil C and a felt on which the guides 2 and 3 are cleaned and a release agent is applied are attached to the side surfaces. When the winding is completed, the contact plate of the coil discharging mechanism comes into contact with the coil C, removes the coil C from the guide 2, and the felt attached to the side surface applies the release agent while cleaning the guide 2 and the guide 3. Then, return to the home position by reciprocating motion.

Although not shown, a hot air introduction mechanism is provided between the guide 2 and the guide 3 toward the winding position of the guide 2. In the warm air introduction mechanism, warm air is blown toward the coil C during winding. Since the wire W is coated with a hot-melt type adhesive, the adhesive is melted by the hot air, and the coils C are formed while the wires W are bonded to each other.

FIG. 4 is a view showing a winding process of the winding machine 100 according to the present invention. The start line S is a clamp 18 (see FIG. 2).
Is held in. The wire W fed out from the wire guide arm 26 (see FIG. 1) is rotated by the rotation of the guide 2.
The start line S is the storage section 2a (groove) of the start line of the guide 2.
And the wire guide arm 26 (see FIG. 1) is
1 (see FIG. 3), the first layer of the coil C is wound.

FIG. 5 is a view showing the winding process of the winding machine 100 following FIG. The guide 3 is a moving means 8 for the guide 3.
By referring to FIG. 1, the winding width H is determined by contacting the winding core 13 until the winding of the first layer is completed. At this time, the core 13
Is compressed by the guide 3, the gap with the guide 3 is eliminated, and the winding width H can be changed by the contraction.

FIG. 6 is a view showing a winding step of the winding machine 100 following FIG. The guide 3 is separated from the core 13 to some extent by the moving means 8 of the guide 3. At the same time when the cutter 19 cuts the finish line F (see FIG. 7) of the coil C (coil forming wire), the clamp 18 holds the next start line S (see FIG. 4). Thereafter, the guide 2 is pushed out of the pneumatic cylinder 28 in the direction of the guide 3 via the push rod 17. At this time, the projecting amount of the core 13 is limited by the guide support member 15. As a result, the guide 2 is
Extruded from. Then, the coil C (see FIG. 7) is stored in a storage device through a shooter (not shown).

Here, the coil C does not separate from the guide 2,
Even if it is stuck to the guide 2, the contact plate of the coil discharging mechanism (not shown) contacts the coil C,
From the coil C. Thereafter, a felt attached to a side surface of the coil discharging mechanism applies a release agent while cleaning the guides 2 and 3.

FIG. 7 is a diagram showing a completed coil C.
The coil C is a coil C having a triangular center, and the coil C serves as a coil portion of a motor or the like by arranging six coils C in a radial pattern. The start line S of the coil C extends from the center side, and the finish line F extends from the outer periphery.
The positional relationship between the start line S and the finish line F with respect to the center of the coil C is important. However, since the position of the start line S is fixed by the housing 2a of the guide 2 for the start line S, Since the start line S is provided on the guide, the start line S always extends from a fixed position, regardless of the position where the rotation of the guide is stopped.

FIG. 8 shows the present invention (FIGS. 1 to 7) and the prior art.
It is a flowchart which compares the winding process of (FIGS. 9-11). Conventionally, the winding starts (S1), and when the winding ends (S2), the guide 53 separates from the winding core 51 and moves backward (S3). Further, a coil removing operation is performed (S4), and thereafter, the guide 53 moves forward to approach the core 51 (S4).
5) The winding for manufacturing the next coil C is started.

In the present invention, the guide 3 may be brought into contact with the winding core 13 after the start of winding (S11) and before the winding of the first layer is completed (S13). When the winding is completed (S14),
The guide 3 separates from the core 13 and retreats (S15). Thereafter, a coil removing operation is performed (S16). When the coil removing operation is completed, the winding starts, and the guide 3 contacts the winding core 13 until the first layer winding is completed.

That is, while the winding is started only when the coil C is removed and the guide 53 comes into contact with the core in the related art, the winding can be started as soon as the coil C is removed in the present invention. Guide 3 by the end of the winding of the layer
Only needs to contact the core 13, so that the time can be shortened. Further, in order to determine the winding width H of the coil C, the winding width H is determined by moving the guide 53 after the winding core 51 comes into contact with the guide in the related art.
Since the winding width H is determined only by the amount of movement of the guide 3 by expanding and contracting the spring 3 by the spring 14, the time corresponding thereto can be reduced.

The embodiment of the present invention has been described above.
The present invention is not limited to this, and improvements based on the knowledge of those skilled in the art can be appropriately added without departing from the scope described in each claim.

[Brief description of the drawings]

FIG. 1 is an overall view of a winding machine as an embodiment of the present invention.

FIG. 2 is a side view of a winding unit of the winding machine.

FIG. 3 is a side view of the winding part of the winding machine continued from FIG. 2;

FIG. 4 is a diagram illustrating a winding process of the winding machine.

FIG. 5 is a diagram illustrating a winding process of the winding machine continued from FIG. 4;

FIG. 6 is a diagram illustrating a winding process of the winding machine continued from FIG. 5;

FIG. 7 is a plan view and a side view of a coil manufactured by the winding machine.

FIG. 8 is a flowchart comparing a winding process of the present invention and a conventional winding process.

FIG. 9 is a side view of a winding part of a conventional winding machine.

FIG. 10 is a diagram illustrating a winding process of a conventional winding machine.

FIG. 11 is a diagram illustrating a winding step of the conventional winding machine continued from FIG. 10;

[Explanation of symbols]

 2 Guide 2a Storage section of start line S 3 Guide 4 Winding section 10 Spindle shaft 13 Core 14 Spring 17 Push rod 18 Clamp 19 Cutter 22 Spindle shaft 100 Winding machine C Coil H Winding width W Wire rod

Claims (2)

[Claims] 1. A winding machine for winding a wire for coil formation guided by a wire guide mechanism around a rotating winding core, wherein a first winding end position in the axial direction of the winding core is defined. And a second guide that defines the position of the other winding end in the axial direction of the core, wherein the first guide is fitted to the core so as to be movable in the axial direction of the core. While having a holding portion for holding the terminal wire of the wire, further the first guide is formed with a terminal wire portion defining portion for defining the position of the terminal wire portion of the wire with respect to the winding core, The second guide is provided so as to be relatively close to and away from the first guide, and the first guide is moved by the approach movement.
In cooperation with the above guide, a predetermined winding width is given to the winding core based on the distance between the one winding end position and the other winding end position. The guide is relatively separated from the first guide, and the first guide relatively moves in the axial direction with respect to the core, so that the wound coil-forming wire is separated from the core. A winding machine. 2. The core is urged by an elastic member toward the second guide, and is elastically moved so that the second guide pushes the core back to the tip of the core when the second guide approaches. 2. The winding machine according to claim 1, wherein the predetermined winding width is formed between the first guide and the first guide that is pressed against or very close to the winding core. 3.