JPH0426767B2 - - Google Patents

Description

[Detailed Description of the Invention] A. Purpose of the Invention (1) Industrial Application Field The present invention relates to a core winding device for winding a coil.
In particular, the present invention relates to a coil winding device for winding a core formed by spirally winding a steel strip around a leg portion of a coil in the same wound state.

(2) Prior Art Conventionally, such a wound core winding device is already known, as disclosed in Japanese Patent Publication No. 14063/1983, for example.

(3) Problems to be Solved by the Invention However, with conventional core winding devices, it is possible to mechanically rewind the core along a large circle surrounding the legs of the coil. , when winding the re-wound core around the legs of the coil,
It is necessary to manually compress the wound core from the outer periphery.

Therefore, the present applicant re-wound the core portion pulled out from the wound core along a virtual circle surrounding one leg of the coil, and pressed the outer surface of the re-wound core portion with a belt to form the leg. A core winding device that automatically and forcibly winds the core has already been proposed (Japanese Patent Application No. 59-194501).

The present invention is a further improvement of such a core winding device, and is a method for winding a core around a coil, which enables automatic winding of the core around the coil legs more reliably and improves work efficiency. The purpose is to provide a mounting device.

B. Structure of the Invention (1) Means for Solving the Problems In order to achieve the above object, according to the present invention, a coil mounting part for removably fixing a coil having legs on a base is provided. A wound core arrangement section for rotatably arranging the wound iron core is provided at one of the coils in the coil mounting section.
The core portion drawn out from the coiled core of the wound core arrangement portion is provided in an imaginary circle surrounding the two legs, and on the side opposite to the coil mounting portion with respect to the wound core arrangement portion, the core portion drawn out from the coiled core of the wound core arrangement portion is provided along the imaginary circle. An endless feeding belt forming an arcuate guiding feeding surface for feeding is arranged, and the feeding belt includes a drive pulley arranged at one end of the guiding feeding surface and driven by a motor;
A drive roller that can sandwich the core portion between the guide and feed surface in the middle of the guide and feed surface, and that can move toward and away from the wound core arrangement portion and can be attached and removed; A plurality of guide rollers are arranged around a belt moving pulley disposed at the end and another guide pulley, and a plurality of guide rollers are arranged in the remaining part of the virtual circle excluding the guide feeding surface, and the belt moving pulley is wound around the other guide pulley. The belt is supported by the base so as to be movable in the forward and backward direction with respect to the coil mounting portion, and a first driving means for forcibly moving the belt moving pulley in the forward and backward directions is disposed between the base and the belt moving pulley. , first and second guides that can rotate to come into sliding contact with the outermost surface of the iron core portion from the time when the iron core portion is located at a position along the virtual circle until the time when the winding around the one leg portion is completed; members are disposed with their proximal ends pivoted at fixed positions on both sides of the one leg, and the first guide member has a first guide member such that the first guide member rotates following the belt moving pulley. A spring is connected to press the guide member in a slidable manner toward the belt moving pulley, and a second drive means is connected to the second guide member for forcibly rotating the guide member.

(2) Function The outermost peripheral end of the core placed in the core placement section is sandwiched between the drive roller and the guiding and feeding surface of the feed belt, and is pulled out by each guide roller so as to form a circular shape along an imaginary circle. and is temporarily fixed to the outer peripheral layer of the wound core. In this state, by operating the drive roller and drive pulley,
The wound core is unwound into a large circle surrounding the legs to the coil. Then, by removing the drive roller and moving the belt moving pulley toward the coil mounting section, the wound core is compressed on the guide and feeding surface and wound so as to wrap around the legs of the coil. Furthermore, at this time, the first guide member is rotated by being pressed by the belt moving pulley, and the second guide member is also rotated by activating the second drive means. Therefore, the wound core is further compressed by both guide members, and the wound core is tightly wound around the legs of the coil.

(3) Embodiment Hereinafter, an embodiment of the present invention will be explained with reference to the drawings. First, in FIGS. 1 and 2, the coil 1 has three-phase windings 2, 3, and 4 having an equilateral triangular cross section. The windings 2, 3, and 4 are primary coils 2a, 3a, 4a and secondary coils 2b, 3b, 4b, which are formed by winding strands of wire in a rectangular shape. It is composed by polymerizing.
In this coil 1, leg portions 5, 6, 7 are provided at the abutting portions of the phase windings 2, 3, 4, and a winding device according to the present invention is attached to these leg portions 5, 6, 7. 8
The wound core 9 is wound by.

The winding device 8 includes a base 10, on which a coil mounting part 11 for removably fixing the coil 1 is provided, and a wound core 9 is rotatably mounted on the base 10. A wound core arrangement section 12 for arrangement is provided.

In FIG. 3, the coil device section 11 is connected to the base 10.
A notch 15 is provided at the end of the base 10 and is provided by cutting out the end of the base 10 so as to have a pair of contact surfaces 13 and 14 corresponding to the two sides of the coil 1.
A mounting plate 16 for placing the coil 1, which is fixed to the base 10 so as to be located below the notch 15, and a mounting plate 16 for placing the coil 1 on the mounting plate 16. Press one side and press the remaining two sides on contact surface 1
3 and 14.

When the coil 1 is placed on the mounting plate 16, the wound core 9 is placed on each leg 5, 6, 7.
Set the distance between the base 10 and the base 10 so that the part to be wrapped is located above the top surface of the base 10.
Fixed to 0. Further, the pressing plate 17 has leg portions 5 to 7.
With the wound cores 9 wound around the wound cores 9,
It is formed in a rectangular shape so that it can come into contact with the side surface of the coil 1 while avoiding. Moreover, one end of the pressing plate 17 is rotatably supported on the base 10 by a hinge pin 18. Also, corresponding to the other end of the pressing plate 17,
A pressing means 19 for pressing the pressing plate 17 toward the coil 1 is arranged.

In such a coil mounting part 11, the leg part 5, on which the wound core 9 is to be wound, is connected to both contact surfaces 13, 1.
4, and place it at the position corresponding to the intersection of coil 1.
can be fixed in a removable manner.

The wound core arrangement section 12 is disposed on a virtual straight line 20 that passes through the leg section 5 and is perpendicular to the straight line connecting the remaining leg sections 6 and 7 in the coil 1 mounted on the coil mounting section 11 . Moreover, the winding core arrangement part 12
is arranged within a relatively large virtual circle 21 that is centered on the virtual straight line 20 and surrounds the leg portion 5 of the coil 1 in the coil mounting portion 11 .

This winding core arrangement section 12 includes a shaft 23 removably fixed to the center of the upper surface of a turntable 22 which is rotatably supported on a base 10. When winding the wound core 9 around each of the legs 5 to 7 of the coil 1, the wound core 9 made of a spirally wound steel strip is placed on the turntable 22 while passing through the shaft 23. be placed.

An endless feeding belt 24 is mounted on the base 10 on the side opposite to the coil mounting part 11 with respect to the wound core arrangement part 12.
is placed. This feed belt 24 is a pair of toothed belts arranged at the top and bottom, and has a driving pulley 25 and a pair of toothed belts.
The belt is wound around two guide pulleys 26 and 27, a belt moving pulley 28, and a drive roller 29. Moreover, along the running direction 30 of the feed belt 24, the outer surface of the feed belt 24 from the belt moving pulley 28 to the drive pulley 25 forms a guide feed surface 31, and a drive roller 29 is placed in the middle of this guide feed surface 31.
is brought into contact.

In FIG. 4, the drive pulley 25 has a pair of upper and lower meshing portions 3 that mesh with a pair of upper and lower feed belts 24.
2, and this rotating shaft 33 is rotatably supported by a support cylinder 34 fixed to the lower surface of the base 10 via bearings 35 and 36. A bevel gear 37 is fixed to the lower end of the rotating shaft 33 that protrudes downward from the support tube 34 .

On the other hand, a pair of support members 39 and 40 are fixed on a support stand 38 fixedly arranged below the base 10, and a horizontal drive shaft 41 is attached to these support members 39 and 40 with bearings 42 and 40, respectively. It is rotatably supported via 43. A bevel gear 44 is fixed in the middle of the drive shaft 41, and the bevel gear 44 meshes with the bevel gear 37.

The guide pulley 26 is connected to a pair of upper and lower feed belts 2.
The rotating shaft 45 is rotatably supported by the base 10 via bearings 46 and 47. Another guide pulley 27
It is also formed in a cylindrical shape and is rotatably supported by the base 10.

The rotating shaft 45 of the guide pulley 26 passes through the base 10 and projects downward, and a support cylinder 48 is fixed to the lower surface of the base 10 so as to cover the protruding end of the rotating shaft 45. . A rotating shaft 49 having the same axis as the rotating shaft 45 is attached to the bearing 5 in the support cylinder 48.
0 and 51, and a bevel gear 52 is fixed to the lower end of this rotating shaft 49. Also, in the middle of the drive shaft 41, the bevel gear 5
A bevel gear 53 that meshes with 2 is fixed.

An output shaft 56 of a motor 55 is connected to the end of the drive shaft 41 via a shaft coupling 54. By operating the motor 55, the drive pulley 25 is connected to the end of the drive shaft 41 via the drive shaft 41 and bevel gears 44, 37. is driven to rotate. Furthermore, due to the rotational operation of the drive shaft 41,
A rotating shaft 49 is rotationally driven via bevel gears 53 and 52, and a pulley 57 is fixed to this rotating shaft 49, and a drive roller 29 is attached to this pulley 57.
A toothed belt 58 is wound to transmit power to.

The drive roller 29 is at an angle α with the virtual straight line 20.
The turntable 22 is arranged so as to be movable along another imaginary straight line 59 extending in the radial direction of the turntable 22.
That is, as shown in FIG. 5, a pair of support members 60 and 61 are fixed to the lower surface of the base 10 at spaced apart positions along the virtual straight line 59, and there is a gap between the support members 60 and 61. A pair of upper and lower guide rods 62 and 63 are installed along the watatsu. These guide rods 6
2 and 63, a pair of supports 64 and 65 are supported movably in the direction along the virtual straight line 59. Also, one support member 60 has one support member 6
An air cylinder 66 is disposed to move the support member 4 along the guide rods 62 and 63, and the other support member 61
An air cylinder 67 is disposed in order to move the other support 65 along the guide rods 62 and 63.

One support body 64 has a rotating shaft 6 extending vertically.
8 is rotatably supported via bearings 69 and 70, and the lower end of the rotating shaft 68 projects downward from the support 64. Furthermore, a toothed pulley 71 is fixed to the lower end of the rotating shaft 68, and a toothed belt 58 for transmitting the driving force from the motor 55 is wound around the toothed pulley 71.

A long hole 72 extending along the virtual straight line 59 is bored in the base 10 , and the upper end of the rotating shaft 68 is inserted into the long hole 72 . A fitting hole 73 that opens upward is bored at the upper end of the rotating shaft 68, and the fitting hole 73 is formed so that its diameter becomes smaller toward the bottom thereof.

A rotating shaft 74 is integrally provided on the drive roller 29 , and the outer surface of the rotating shaft 74 is tapered to fit into the fitting hole 73 . Therefore, the rotating shaft 7
4 into the fitting hole 73 of the rotating shaft 64, the drive roller 29 is integrated with the rotating shaft 64. In addition, the drive roller 29 and the rotating shaft 74 include
An insertion hole 75 is bored along its entire length, and a female thread 76 is formed at the lower end of the insertion hole 75. To remove the drive roller 29 from the rotating shaft 64, a rod-shaped removal tool 77 having a male thread at its end that is screwed into the female thread 76 is prepared.
This removal tool 77 is inserted into the insertion hole 75, rotated to engage the female thread 76, and screwed in.
Then, the end of the removal tool 77 will fit into the fitting hole 73.
The rotating shaft 74 of the driving roller 29 is floated and the rotating shaft 74, that is, the driving roller 29 is brought into the air from the fitting hole 73.
can be removed.

A pulley 78 is disposed on the opposite side of the drive roller 29 with respect to the feed belt 24 so as to be movable along the virtual straight line 59. That is, a long hole 79 extending along a virtual straight line 59 is bored in the base 10, and a rotating shaft 80 provided integrally with the pulley 78 is inserted through the long hole 79.
It is rotatably supported by a support body 65.

6 and 7, a belt moving pulley 28 having a pair of upper and lower engaging portions 28a is arranged so as to be able to approach and move away from the coil mounting portion 11 along a direction parallel to the imaginary straight line 20. That is,
A long hole 81 extending in a direction parallel to the virtual straight line 20 is bored in the base 10.
Support members 82 and 83 are fixed to the lower surface of the base 10 at positions corresponding to both ends of the base 10. On the other hand, the rotation shaft 84 of the belt moving pulley 28 passes through the elongated hole 81,
It is rotatably supported by a support body 87 by bearings 85 and 86. A pair of upper and lower horizontal guide rods 88 and 89 pass through this support body 87, and these guide rods 88 and 89 are installed across both support members 82 and 83. Furthermore, one support member 82
An air cylinder 90 is provided as a first driving means for moving the support body 87 along the guide rods 88 and 89. Therefore, by expanding and contracting the air cylinder 90, the belt moving pulley 28 moves along the elongated hole 81.

Referring again to FIGS. 1 and 2, the feed belt 24 is wound around a tensioner 96 between the guide pulleys 26 and 27 in order to adjust its tension.

Also, along the remaining part of the virtual circle 21 excluding the part corresponding to the guide and feeding surface 31, on the base 10,
A plurality of guide rollers, for example three guide rollers 91, 92, 9
3 is rotatably disposed, and a guide roller 94 is also rotatably disposed on the mounting plate 16 of the coil mounting portion 11.

The guide rollers 91 and 93 are disposed on both sides of one leg 5 of the coil 1 disposed in the coil mounting section 11, and the base end of the first guide member 97 is rotatably attached to one guide roller 91. The base end of the second guide member 98 is rotatably supported by the other guide roller 93 . These guide members 97 and 98 are formed by, for example, bending a metal rod into an arc shape along the imaginary circle 21, and the positions along the imaginary circle 21 and the wound core 9 wound around the leg portion 5 are aligned. It is rotatable between a position where it contacts the outermost surface.

Moreover, the first guide member 97
4 between the belt moving pulley 28 and the winding core arrangement portion 12
It comes into sliding contact with the side outer surface, and is biased in the direction of sliding contact with the belt moving pulley 28 by a spring 100 stretched between it and a support member 99 fixed to the base 10. Therefore, the first guide member 97 is rotationally driven in accordance with the movement of the belt moving pulley 28.

The second guide member 98 is arranged symmetrically with the first guide member 97 with respect to the virtual straight line 20, and a second drive means 101 is connected to the second guide member 98. The second driving means 101 is composed of an air cylinder 102 and a spring 103, and the air cylinder 102 is arranged at a base so that a pressing piece 105 provided at the tip of the piston rod 104 comes into contact with the second guide member 98 from the outside. It is fixedly arranged near the drive pulley 25 on the stand 10. Moreover, the spring 103 is
The spring 1 is stretched between the support member 106 fixed on the base 10 and the second guide member 98.
The second guide member 98 is urged to rotate in the direction of opening outward by the spring force of 03.

Next, to explain the operation of this embodiment, when winding the wound core 9 around the coil 1, the leg part 5, for example, around which the wound core 9 is to be wound, is connected to the wound core arrangement part 1.
2 side, and the coil 1 is fixedly arranged on the coil mounting part 11. Further, on the turntable 22, a wound core 9 formed by winding a steel strip into a spiral shape is placed.

At this time, the belt moving pulley 28 is located at the farthest position from the coil mounting portion 11. Further, the drive roller 29 is located at the farthest position from the turntable 22, and the pulley 78 is located at a position where the feed belt 24 is sandwiched between the drive roller 29 and the drive roller 29. In this state, the guide feeding surface 31 of the feeding belt 24 is curved in an arc shape along a part of the virtual circle 21. Further, the air cylinder 102 of the second drive means 101 is contracted, and both guide members 97, 9
8 is opened outward by the spring force of springs 100 and 103 and is located along the virtual circle 21.

Next, the outermost peripheral end 9a of the wound core 9 is pulled out onto the turntable 22, and while passing between the drive roller 29 and the guide feeding surface 31, the virtual circle 21
Make a full circle along the Moreover, once it has gone around,
The outermost peripheral end 9a is temporarily fixed to the outer peripheral layer of the wound core 9 with an adhesive tape 95 or the like.

When the temporary fixing is completed, the motor 55 starts operating. As a result, the drive roller 29 and the drive pulley 25 are rotationally driven. Therefore, the feed belt 24 starts running, and the outer peripheral layer of the wound core 9 in the wound core arrangement portion 11
It is driven by being brought into contact with the guide feeding surface 31 of No. 4 over a wide range. As a result, the wound core 9 is pulled out between the drive roller 29 and the guide and feed surface 31 while rotating smoothly with a large torque, and is finally re-wound into a large circle corresponding to the virtual circle 21.

During the process of rewinding the wound core 9,
The layer thickness of the iron core portion along the virtual circle 21 gradually increases, and the drive roller 29 is moved to correspond to the increase in layer thickness.

In this way, the wound core 9 is re-wound into a large circular shape that surrounds the leg portion 5.

Next, after removing the shaft 23 of the turntable 22 and further removing the drive roller 29 from the rotating shaft 64, the belt moving pulley 28 is moved along the elongated hole 81 toward the coil mounting portion 11. As a result, the guide and feed surface 31 of the feed belt 24 rotates toward the coil mounting portion 11 using the drive pulley 25 as a fulcrum, and the wound core 9, which had a large circular shape, is compressed and compressed to reduce its diameter. It will be done.

Moreover, at this time, by operating the air cylinder 102 of the rotation driving means 101 to extend, the second guide member 98 rotates against the spring force of the spring 103, and compresses the wound core 9 toward the leg portion 5 side. . Also the first
The guide member 97 side also rotates with the movement of the belt moving pulley 28 and compresses the wound core 9 toward the leg portion 5 side. Therefore, the wound core 9 is strongly compressed,
Finally, it is wrapped around the leg portion 5.

Regarding the remaining legs 6 and 7 of the coil 1, the same procedure as for the leg 5 described above is repeated to wind the wound core 9, respectively.

C. Effects of the Invention As described above, according to the present invention, a coil mounting portion for removably fixing a coil having legs is provided on a base, and a wound iron core can be freely rotated. The winding core placement section for placement is
Provided in a virtual circle surrounding one leg of the coil in the coil mounting section, and on the opposite side of the coil mounting section with respect to the wound core arrangement section, an iron core portion drawn out from the wound core of the wound core arrangement section. An endless feeding belt forming an arc-shaped guiding feeding surface for feeding along the virtual circle is disposed, and the feeding belt includes a driving pulley disposed at one end of the guiding feeding surface and driven by a motor, and a drive pulley driven by a motor; a drive roller which is capable of sandwiching the core part between the guide and feed surface in the middle of the feed surface, and which can move toward and away from the wound core arrangement section, and which is detachable; and the other end of the guide and feed surface. A plurality of guide rollers are arranged in the remaining part of the virtual circle excluding the guide feeding surface, and the belt moving pulley is wound around a belt moving pulley disposed in the coil mounting part and another guide pulley. A first driving means is disposed between the base and the belt moving pulley to forcibly move the belt moving pulley in the advancing and retreating direction, and the iron core first and second guide members that can rotate to come into sliding contact with the outermost surface of the iron core portion from the time when the portion is located at a position along the virtual circle until the time when the portion has finished being wound around the one leg portion; The first guide member is arranged with its base end pivoted at fixed positions on both sides of the one leg, and the first guide member includes:
A spring is connected to the second guide member for forcing the first guide member to slide against the belt moving pulley so that it rotates following the belt moving pulley. Since the second driving means for moving the coiled iron core arranged in the coiled iron core arrangement section is connected, the coiled iron core arranged in the coiled iron core arrangement section is moved by the cooperation of the feeding belt and the drive roller to surround the coil leg part and to move the large diameter core along the virtual circle. It can be automatically rewound to make it circular. Moreover, after the rewinding is completed, the first drive means is operated with the drive roller removed to gradually move the belt moving pulley toward the coil attachment part and rotate the first guide member following the moving pulley. By simply moving the coil and rotating the second guide member by operating the second driving means, the large-diameter core in the rewound state can be actively compressed and wound tightly around the coil leg. As a result, the work of rewinding the core and tightening the winding around the legs of the coil can be performed mechanically and automatically, which greatly contributes to improving the efficiency of winding the core into the coil. can.

In particular, when winding the re-wound large-diameter core around the coil leg, the belt moving pulley, which gradually moves toward the coil mounting section, cooperates with the guiding and feeding surface of the feed belt, which moves to follow this. Accordingly, the large-diameter wound core can be forcefully compressed according to the amount of movement of the pulley, and in parallel, the large-diameter wound core can be compressed by the first and second guide members. Since the two legs can be forcibly compressed from both sides, sufficient winding force can be applied to the outermost surface of the large-diameter wound core over a wide range in the circumferential direction, ensuring reliable winding and tightening. This is advantageous especially when it is necessary to tighten the winding tightly. Furthermore, since the first driving means can be used as a common actuator for the second guide member and the belt moving pulley, the structure of the winding mechanism can be simplified and costs can be reduced. It is.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is an overall perspective view, FIG. 2 is an overall plan view, FIG. 3 is an enlarged view of FIG. of-
5 is an enlarged sectional view taken along the - line in FIG. 2; FIG. 6 is an enlarged sectional view taken along the - line in FIG. 2;
FIG. 7 is a sectional view taken along the line -- in FIG. 6. 1... Coil, 5, 6, 7... Leg, 8... Winding device, 9... Winding core, 10... Base, 11...
Coil mounting part, 12... Winding core arrangement part, 21...
Virtual circle, 24... feeding belt, 25... driving pulley, 26, 27... guide pulley, 29... driving roller, 31... guide feeding surface, 55... motor,
90...Air cylinder as first driving means, 9
1 to 94...Guide roller, 97...First guide member, 98...Second guide member, 101...Second
Drive means.

Claims (1)

[Claims] 1 Coil 1 having legs 5 to 7 on base 10
A coil mounting part 11 for removably fixing the coil 1 is provided, and a wound core arranging part 12 for rotatably arranging the wound core 9 is attached to one of the coils 1 in the coil mounting part 11. Leg 5
The core portion pulled out from the wound core 9 of the wound core arrangement section 12 is provided within a virtual circle 21 surrounding the wound core arrangement section 12, and on the opposite side of the coil mounting section 11 with respect to the wound core arrangement section 12. An endless feeding belt 24 forming an arcuate guide feeding surface 31 for feeding along the
The drive pulley 25 is disposed at one end of the guide and feed surface 31 and is driven by a motor 55, and the iron core part is connected to the guide and feed surface 3 in the middle of the guide and feed surface 31.
1 and the wound core arrangement portion 12.
The belt is wound around a drive roller 29 that can move toward and away from the belt and is detachable, a belt moving pulley 28 disposed at the other end of the guide feeding surface 31, and other guide pulleys 26 and 27. A plurality of guide rollers 91 to 94 are arranged in the remaining portion of the virtual circle 21 excluding the guide and feed surface 31, and the belt moving pulley 28 is movable in the forward and backward direction with respect to the coil mounting portion 11. A first driving means 90 is supported by a base 10 and is disposed between the base 10 and the belt moving pulley 28 for forcibly moving the belt moving pulley 28 in the advance/retreat direction. The first and second guide members 97, 98 are rotatable so as to be in sliding contact with the outermost surface of the iron core portion from the time when they are located at a position along the virtual circle 21 until the time when the winding into the one leg portion 5 is completed. are arranged with their proximal ends pivoted at fixed positions on both sides of the one leg 5, and the first guide member 97 includes:
A spring 1 that slideably presses the first guide member 97 toward the belt moving pulley 26 so that it rotates following the belt moving pulley 28.
00 is connected to the second guide member 98, and a second drive means 101 for forcibly rotating the second guide member 98 is connected.