JP7035822B2 - Winding device - Google Patents

Description

The present invention relates to a winding device capable of continuously forming two rectangular coils that are spirally stacked while alternately sending out and bending flat conductors.

Conventionally, there has been known a winding device that forms a rectangular coil by alternately sending out flat conductors and bending them while stacking them in a spiral shape.

In such a winding device, when the winding speed of the rectangular coil is increased, the rectangular coil being formed vibrates greatly due to inertia, and as a result, the surface of the rectangular coil is scratched or the finished rectangular coil is deformed. Dimensional accuracy may deteriorate.

In order to suppress the vibration of the rectangular coil during such formation, for example, in Patent Document 1, a coil winding device in which a steady rest plate is arranged above the rectangular coil with a gap in the forming process is provided. It has been disclosed.

By the way, a rectangular coil often forms one winding coil (product) by itself, but sometimes two rectangular coils connected by a flat conductor form one winding coil. In this case, the first winding coil is formed. After forming the rectangular coil, the second rectangular coil is continuously formed.

Specifically, for example, a winding device including a steady rest plate and a work chuck having a expandable chuck portion provided with a claw at the tip is prepared, and the steady rest plate is arranged above the first steady rest. After winding up the rectangular coil, the steady rest plate is removed, and the chuck portion is inserted inside the first rectangular coil after the formation is completed. Next, for example, the chuck portion inserted inside the first rectangular coil is expanded by the urging force of the spring, and the claw is hooked on the lower end of the first rectangular coil to grip the first rectangular coil with the work chuck. Then, by moving and rotating the work chuck holding the first rectangular coil in accordance with the machining operation of the second rectangular coil, the second rectangular coil is maintained while maintaining the relative positional relationship with the first rectangular coil. The coil is wound up to form a winding coil in which the first rectangular coil and the second rectangular coil are connected by a flat lead wire.

Japanese Unexamined Patent Publication No. 2013-106402

However, the winding device provided with the steady rest plate and the work chuck described above has the following problems.

First, regarding the steady rest plate, when the first rectangular coil is processed (wound) at high speed, the first rectangular coil being formed vibrates greatly due to inertia, so that the surface of the first rectangular coil is rubbed by the steady rest plate. There is a risk of being hurt.

Therefore, in order to suppress the vibration of the first rectangular coil, it is conceivable to strongly press the first rectangular coil being formed from above with a steady rest plate, but this puts an extra burden on the equipment, and the equipment strength. If the material is changed in order to increase the weight, the work chuck or the like becomes heavy, and there is a problem that high-speed machining operation becomes difficult.

Next, regarding the work chuck, when the processing of the second rectangular coil is performed at high speed, the first rectangular coil gripped by the work chuck that moves at high speed shakes greatly, so that the first rectangular coil falls from the work chuck. There is a risk that it will end up.

Therefore, for example, it is conceivable to increase the load of the spring used to expand the chuck portion to grip the first rectangular coil more firmly. However, in this case, when the chuck portion is inserted inside the first rectangular coil. In addition, it is necessary to increase the capacity of the actuator or the like used to close the chuck portion against the urging force of the spring, which causes a problem that the equipment cost increases.

It is also conceivable to increase the claw at the tip of the chuck portion to increase the hooking allowance on the lower end of the first rectangular coil, but in this case, the clearance between the inner peripheral surface of the first rectangular coil and the chuck portion is increased. There is a problem that the size becomes small and the first rectangular coil is damaged by interfering with the claw when the chuck portion is inserted inside the first rectangular coil.

The present invention has been made in view of this point, and an object of the present invention is to form a second rectangular coil while gripping the first rectangular coil in a winding device with a simple configuration. The purpose of the present invention is to provide a technique for preventing the first rectangular coil from being damaged or dropped.

In order to achieve the above object, in the winding device according to the present invention, the steady rest plate is removed and the work chuck is formed to be spirally stacked between the chuck portion and the support column provided on the outside thereof. The first rectangular coil is accommodated.

Specifically, the present invention comprises a first rectangular coil that is spirally stacked while alternately sending and bending flat conductors, and sending and bending a flat conductor connected to the first rectangular coil. The target is a winding device capable of continuously forming a second rectangular coil that is spirally stacked while alternately performing.

The winding device has a chuck portion that can be expanded and contracted, and a plurality of downwardly extending guide columns arranged around the chuck portion, and the chuck portion is expanded inside the first rectangular coil. A work chuck capable of gripping the first rectangular coil between the chuck portion and the guide strut, and a control device for controlling the movement and rotation of the work chuck around a vertical axis are provided. When forming the first rectangular coil, the flat-angle conducting wire is sent out so that the first rectangular coil being formed, which is stacked in a spiral shape, is accommodated between the chuck portion and the guide strut. While controlling the work chuck according to the bending and bending operation, when the second rectangular coil is formed, the first rectangular coil is gripped by the work chuck by expanding the chuck portion. It is characterized in that the work chuck is controlled according to the feeding and bending operation of the flat lead wire so that the relative positional relationship between the coil and the second rectangular coil being formed is maintained. be.

According to this configuration, when forming the first rectangular coil, the flat conductor is sent out so that the first rectangular coil being formed, which is spirally stacked, is accommodated between the chuck portion and the guide support. Since the work chuck is controlled according to the bending and bending operation, the first rectangular coil being formed can be sequentially accommodated between the chuck portion and the guide column. In this way, since the first rectangular coil being formed is accommodated between the chuck portion and the guide column, the first rectangular coil being formed vibrates significantly even when the machining operation is performed at high speed. Can be suppressed. Therefore, according to the present invention, it is possible to reliably suppress the surface of the first rectangular coil from being scratched by a simple configuration in which the guide column is arranged around the chuck portion.

On the other hand, when forming the second rectangular coil, the chuck portion and the guide strut can be connected by simply expanding the chuck portion in a state where the first rectangular coil after the formation is completed is accommodated between the chuck portion and the guide strut. The first rectangular coil can be firmly gripped between them. As a result, even when the processing operation of the second rectangular coil is performed at high speed, it is possible to suppress the large shaking of the first rectangular coil gripped by the work chuck. Therefore, it is possible to prevent the first rectangular coil from falling from the work chuck without increasing the load of the spring used to expand the chuck portion or increasing the claw at the tip of the chuck portion.

Further, in order to maintain the relative positional relationship between the first rectangular coil held by the work chuck after the formation is completed and the second rectangular coil being formed, the flat conductor is sent out and bent according to the operation. Since the work chuck is controlled, it is possible to prevent the first and second rectangular coils from being deformed and the dimensional accuracy from being deteriorated during the formation of the second rectangular coil.

As described above, according to the winding device according to the present invention, even when the second rectangular coil is formed while gripping the first rectangular coil, the first rectangular coil may be damaged or damaged by a simple configuration. It is possible to prevent it from falling.

It is a perspective view which shows typically an example of the winding coil which concerns on embodiment of this invention. It is a figure which shows an example of a winding device schematically. It is a perspective view schematically explaining the formation work of the 2nd rectangular coil. It is a top view schematically explaining the edgewise bending process of a flat conductor. It is a figure which schematically explains the formation process of the 1st rectangular coil. It is a figure which schematically explains the formation process of the 1st rectangular coil. It is a figure which schematically explains the process of shifting to the formation of the 2nd rectangular coil after the formation of the 1st rectangular coil is completed. It is a figure which schematically explains the formation process of the 2nd rectangular coil. It is a perspective view which shows typically the work chuck. It is a figure which shows typically the positional relationship between a chuck part and a guide column, and a 1st rectangular coil. It is a figure which shows typically the relationship between a work chuck and a 1st rectangular coil. It is a figure which shows the 1st operation locus schematically. It is a figure which shows the 2nd motion locus schematically. It is a figure which shows the operation flow of a winding apparatus, FIG. 3A shows the operation flow of this invention, and FIG. 2B shows the conventional operation flow. It is a figure which schematically explains the formation process of the conventional 1st rectangular coil using a steady rest plate. It is a figure which schematically explains the formation work of the conventional 2nd rectangular coil.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

-Winding coil-
FIG. 1 is a perspective view schematically showing a winding coil 10 according to the present embodiment. As shown in FIG. 1, the winding coil 10 is composed of a first rectangular coil 11 and a second rectangular coil 12 connected to the first rectangular coil 11 by a flat conductor wire 13. The winding coil 10 is formed by continuously winding the second rectangular coil 12 after the winding of the first rectangular coil 11 is completed. The first rectangular coil 11 has two long sides 11a, two short sides 11b, and four corner portions 11c, and the second rectangular coil 12 has two long sides 12a and two. It has a short side 12b and four corners 12c.

-Overall configuration of winding device-
FIG. 2 is a diagram schematically showing an example of the winding device 1, and FIG. 3 is a perspective view schematically explaining the forming work of the second rectangular coil 12. In the winding device 1, the first rectangular coil 11 is spirally stacked while alternately sending and bending the flat conductor wire 13, and the flat conductor wire 13 connected to the first rectangular coil 11 is sent out and bent. The second rectangular coil 12 and the second rectangular coil 12, which are stacked in a spiral shape while alternately performing the above steps, are continuously formed. As shown in FIG. 2, the winding device 1 winds up a material supply unit 2 that sends a flat conductor wire 13 to a coil winding unit 3 and a flat conductor wire 13 sent by the material supply unit 2, and winds up the first and second rectangular conductors. The coil winding unit 3 forming the coils 11 and 12 and the coil gripping unit 4 that grips the first rectangular coil 11 around the second rectangular coil 12 during the formation of the second rectangular coil 12, as shown in FIG. And have.

<Material supply unit>
The material supply unit 2 includes a wire rod feeding portion 21, a first clamp 22, and a second clamp 23. The wire rod feeding unit 21 has a rotary shaft 21a rotated by a drive source (not shown) such as a motor, and a rotary table 21b attached to the upper end of the rotary shaft 21a. The first clamp 22 moves up and down as shown by an arrow B in FIG. 2 to press the flat conductor 13 against the rotary table 21b and release the pressing of the flat conductor 13 against the rotary table 21b. The second clamp 23 has an upper clamp portion 23a and a lower clamp portion 23b, and as shown by an arrow C in FIG. 2, the upper clamp portion 23a moves up and down to form a lower clamp portion 23b. The flat lead wire 13 is fixed between the two, and the flat lead wire 13 is released from the fixing.

In the material supply unit 2 configured in this way, when the "flat conductor wire 13 is sent out", the first clamp 22 is lowered to the rotary table 21b with the upper clamp portion 23a raised. Press the flat lead wire 13. As a result, the rotational force of the rotary table 21b is converted into a linear propulsive force, and the flat conductor wire 13 is supplied to the coil winding unit 3 side as shown by the arrow A in FIG.

On the other hand, when "bending the flat conductor wire 13" is performed, the first clamp 22 is raised to release the pressing of the flat conductor wire 13 against the rotary table 21b, so that the flat angle to the coil winding unit 3 side is released. Stop the supply of the conductor 13. At this time, by lowering the upper clamp portion 23a and fixing the flat conductor 13 between the upper clamp portion 23a and the lower clamp portion 23b, an extra flat angle is obtained when the flat conductor 13 is edgewise bent. It prevents the conducting wire 13 from being drawn toward the coil winding unit 3.

<Coil winding unit>
As shown in FIG. 2, the coil winding unit 3 includes a coil retainer 31, a bending piece 32, a stage 33, a first motor 34, and a second motor 35. The coil retainer 31 has a flange portion 31a at the upper end portion thereof. When the first motor 34 is combined with a cam (not shown), the coil retainer 31 is moved up and down as shown by the arrow D in FIG. 2, and the flange portion 31a is pressed against the flat conductor 13 on the stage 33. The pressing of the flange portion 31a against the flat conductor wire 13 on the stage 33 is released. The second motor 35 rotates the bending piece 32 in contact with the flat conductor wire 13 by a predetermined angle, and returns the bending piece 32 to the initial position.

FIG. 4 is a plan view schematically illustrating the edgewise bending process of the flat conductor wire 13. In the coil winding unit 3 configured as described above, when "bending the flat conductor wire 13" is performed, the coil retainer 31 is lowered and the flat angle on the stage 33 is shown in FIG. 4A. The flange portion 31a is pressed against the conducting wire 13. In this way, from the state where the flat conductor wire 13 is sandwiched between the flange portion 31a and the stage 33, the bending piece 32 in contact with the flat conductor wire 13 is rotated as shown in FIG. 4 (b). At this time, since the flat conductor 13 is prevented from being pulled toward the coil winding unit 3 by the second clamp 23, it is possible to prevent the flat conductor 13 from bulging outward during the edgewise bending process. Then, by rotating the bending top 32 by a predetermined angle, right-angled corner portions 11c and 12c are formed as shown in FIG. 4C.

On the other hand, when "delivery of the flat conductor wire 13" is performed, the coil retainer 31 is raised to release the pressing of the flange portion 31a against the flat conductor wire 13 on the stage 33, and the bending piece 32 is set to the initial position. Return to (position in FIG. 4A).

<Coil gripping unit>
The coil gripping unit 4 includes a work chuck 50 that grips the first rectangular coil 11 after completion of formation by using the urging force of the spring 52 (see FIG. 11), and a Z-direction moving mechanism 41 that moves the work chuck 50 in the X direction. The moving mechanism 42 and the Y-direction moving mechanism 43, the servomotor 44 that rotates the work chuck 50 around the vertical axis, and the control device 60 that controls the movement of the work chuck 50 and the rotation (rotation) around the vertical axis through these controls. And have.

The Z-direction moving mechanism 41 moves the X-direction moving mechanism 42, the Y-direction moving mechanism 43, the servomotor 44, and the work chuck 50 in the vertical direction (Z-direction) according to the command of the control device 60, as shown by the arrow E in FIG. ). The X-direction moving mechanism 42 moves the Y-direction moving mechanism 43, the servomotor 44, and the work chuck 50 in the supply direction (X direction) of the flat lead wire 13 according to the command of the control device 60, as shown by the arrow F in FIG. Move. The Y-direction moving mechanism 43 moves the servomotor 44 and the work chuck 50 in the direction orthogonal to the paper surface (Y direction) as shown by G in FIG. 2 according to the command of the control device 60. The servomotor 44 rotates the work chuck 50 around the vertical axis according to the command of the control device 60, as shown by the arrow H in FIG.

In the coil gripping unit 4 configured in this way, as shown in FIG. 3, when the second rectangular coil 12 is continuously formed after the formation of the first rectangular coil 11 is completed, the second rectangular coil is gripped by the work chuck 50. The movement and rotation of the work chuck 50 are controlled according to the feeding and bending operations of the flat conductor 13 so that the relative positional relationship between the 1 rectangular coil 11 and the 2nd rectangular coil 12 being formed is maintained. Rectangle.

Specifically, when performing "delivery of the flat conductor wire 13," the control device 60 drives the X-direction moving mechanism 42, and as shown by the black-painted arrow in FIG. 3, the work chuck 50 and the work chuck 50 thereof. The first rectangular coil 11 gripped in the above is moved in the delivery direction of the flat conductor wire 13 by the amount of the flat conductor wire 13 to be sent out.

On the other hand, when performing the "bending process of the flat lead wire 13," the control device 60 drives the X-direction moving mechanism 42 and the Y-direction moving mechanism 43, and as shown by the hatching arrow in FIG. 3, the work. The chuck 50 and the first rectangular coil 11 are moved in a curved orbit. At this time, the control device 60 moves the work chuck 50 and the first rectangular coil 11 in a curved trajectory so that the orientation of the first rectangular coil 11 and the orientation of the second rectangular coil 12 do not change, and the servomotor 44 Is driven to rotate the work chuck 50 as shown by the white arrow in FIG.

Further, the control device 60 drives the Z-direction moving mechanism 41 to raise the work chuck 50 and the first rectangular coil 11 in response to a change in the height of the second rectangular coils 12 that are spirally stacked.

-Procedure for forming a winding coil-
5 and 6 are diagrams schematically illustrating the formation process of the first rectangular coil 11. In addition, in FIGS. 5 and 6, the bending piece 32 is not shown in order to make the figure easier to see. When forming the first rectangular coil 11, first, as shown by the white arrow in FIG. 5A, the flat conducting wire 13 is sent out and the flat conducting wire 13 shown by the solid line is moved to the position indicated by the alternate long and short dash line. Let me. Next, as shown by the white arrow in FIG. 5B, the flat conductor wire 13 shown by the solid line is edgewise bent along the coil retainer 31 in the direction indicated by the alternate long and short dash line to form the square portion 11c. Next, as shown by the white arrow in FIG. 5C, the flat conductor 13 is sent out by the length corresponding to the long side 11a, and the flat conductor 13 shown by the solid line is moved to the position indicated by the alternate long and short dash line. Next, as shown by the white arrow in FIG. 5D, the flat conductor wire 13 shown by the solid line is edgewise bent along the coil retainer 31 in the direction indicated by the alternate long and short dash line to form the square portion 11c. Next, as shown by the white arrow in FIG. 5 (e), the flat conductor 13 is sent out by the length corresponding to the short side 11b, and the flat conductor 13 shown by the solid line is moved to the position indicated by the alternate long and short dash line.

Then, by performing the procedure of FIG. 5 (b) → FIG. 5 (c) → FIG. 5 (d) → FIG. 5 (e) again, the two long sides 11a, the two short sides 11b, and 4 One stage of the first rectangular coil 11 having the two corners 11c is formed. In this way, every time the procedure of FIG. 5 (b) → FIG. 5 (c) → FIG. 5 (d) → FIG. 5 (e) is repeated twice, the first rectangular coil 11 is formed one step at a time, forming a spiral shape. It will be piled up in. The formation of one stage of the first rectangular coil 11 is performed in about 1 second.

Even in the process of stacking in a spiral shape, the flat conductors 13 are sent out and bent alternately in the same manner as in FIG. Specifically, as shown by the white arrow in FIG. 6A, the flat conductor 13 is sent out by the length corresponding to the short side 11b, and a new short side is sent as shown in FIG. 6B. Secure 11b. Next, as shown by the white arrow in FIG. 6 (b), the flat conductor wire 13 is edgewise bent along the coil retainer 31 to form a new corner portion 11c as shown in FIG. 6 (c). do. Next, as shown by the white arrow in FIG. 6 (c), the flat conducting wire 13 is sent out by the length corresponding to the long side 11a, and a new long side 11a is secured as shown in FIG. 6 (d). do. Next, as shown by the white arrow in FIG. 6 (d), when the flat conductor wire 13 is edgewise bent along the coil retainer 31, the state is the same as in FIG. 6 (a). → The winding (formation) of the first rectangular coil 11 is completed by performing the procedure of FIG. 6 (b) → FIG. 6 (c) → FIG. 6 (d) a predetermined number of times.

FIG. 7 is a diagram schematically illustrating the process of shifting to the formation of the second rectangular coil 12 after the formation of the first rectangular coil 11 is completed, and FIG. 8 is a diagram schematically explaining the process of forming the second rectangular coil 12. It is a figure explaining to. In FIGS. 7 and 8, the bending piece 32 and the work chuck 50 are not shown for the sake of easy viewing. When the formation of the first rectangular coil 11 is completed, the first rectangular coil 11 is gripped by the work chuck 50. Then, as shown by the white arrow in FIG. 7 (a), after the flat conductor 13 is sent out longer than the length corresponding to the long side 11a, as shown by the black arrow in FIG. 7 (a), as shown by the black arrow in FIG. 7 (a). The flat conductor wire 13 is edgewise bent along the coil retainer 31 to form a corner portion 12c as shown in FIG. 7B. Next, as shown by the white arrow in FIG. 7 (b), the flat lead wire 13 is sent out by the length corresponding to the long side 12a, and then the flat lead wire 13 is sent out as shown by the black arrow in FIG. 7 (b). Is edgewise bent along the coil retainer 31 to secure a long side 12a and form a corner portion 12c as shown in FIG. 7C. Next, as shown by the white arrow in FIG. 7 (c), the flat lead wire 13 is sent out by the length corresponding to the short side 12b, and then the flat lead wire 13 is sent out as shown by the black arrow in FIG. 7 (c). Is edgewise bent along the coil retainer 31 to secure a short side 12b and form a corner portion 12c as shown in FIG. 7D. As a result, the first stage of the second rectangular coil 12 is formed at a position that does not overlap with the first rectangular coil 11 in a plan view.

Then, in the second rectangular coil 12, as in the case of the first rectangular coil 11, the flat conducting wire 13 is sent out and bent alternately. Specifically, as shown by the white arrow in FIG. 8 (a), the flat conductor wire 13 is edgewise bent along the coil retainer 31, and as shown by the black arrow in FIG. 8 (a). The work chuck 50 gripping the first rectangular coil 11 is rotated while being moved in a curved trajectory. Next, as shown by the white arrow in FIG. 8 (b), the flat conductor 13 is sent out by the length corresponding to the short side 12b, and the first rectangle is shown by the black arrow in FIG. 8 (b). The work chuck 50 gripping the coil 11 is moved in the delivery direction of the flat conductor wire 13 by the amount of the flat conductor wire 13 to be fed out. Next, the flat conductor 13 is edgewise bent along the coil retainer 31 as shown by the white arrow in FIG. 8 (c), and the first rectangle is shown by the black arrow in FIG. 8 (c). The work chuck 50 gripping the coil 11 is rotated while being moved in a curved trajectory. Next, as shown by the white arrow in FIG. 8 (d), the flat conducting wire 13 is sent out by the length corresponding to the long side 12a, and the first rectangle is shown by the black arrow in FIG. 8 (d). The work chuck 50 gripping the coil 11 is moved in the delivery direction of the flat conductor wire 13 by the amount of the flat conductor wire 13 to be fed out.

Every time the procedure of FIG. 8 (a) → FIG. 8 (b) → FIG. 8 (c) → FIG. 8 (d) is repeated twice, the second rectangular coil 12 is formed one step at a time to form a spiral shape. It will be piled up in. Then, by performing the procedure of FIG. 8 (a) → FIG. 8 (b) → FIG. 8 (c) → FIG. 8 (d) a predetermined number of times, the winding of the second rectangular coil 12 is completed, and FIG. 1 shows. The winding coil 10 as shown is formed. The formation of one stage of the second rectangular coil 12 is also performed in about 1 second.

-Work chuck-
Next, the work chuck 50 will be described, but in order to make the present invention easier to understand, a conventional winding device will be described prior to this.

As described above, the formation of one stage of the first and second rectangular coils 11 and 12 is performed in about 1 second, but when the winding is performed at such a high speed, the rectangular coil being formed vibrates greatly due to inertia. As a result, the surface of the rectangular coil may be scratched, or the finished rectangular coil may be deformed and the dimensional accuracy may be deteriorated.

Therefore, in the conventional winding device, in order to suppress the runout of the first rectangular coil 111 in the forming process, as shown in FIG. 15, the steady rest plate 170 is separated above the first rectangular coil 111 being formed with a gap. Is often placed. More specifically, in the conventional winding device, as shown in FIG. 15A, the steady rest plate 170 is arranged above the first rectangular coil 111 being formed with a gap between them, and the first steady rest plate 170 is being formed. As the first rectangular coil 111 being formed is spirally stacked while suppressing the large vibration of the rectangular coil 111, the steady rest plate 170 is raised as shown by the white arrow in FIG. 15 (b). In many cases, the gap between the first rectangular coil 111 and the steady rest plate 170 is maintained.

Further, in the conventional winding device, as shown in FIG. 16, a work chuck 150 having a expandable chuck portion 151 which is urged by a spring 152 so as to be constantly expanded and has a claw 151b at the tip thereof is used. Therefore, the first rectangular coil 111 is often gripped during the formation of the second rectangular coil 112. More specifically, in the conventional winding device, after the steady rest plate 170 is arranged above and the first rectangular coil 111 is wound up, the steady rest plate 170 is removed and the spring 152 is operated by an actuator or the like (not shown). The chuck portion 151 is closed (contracted) against the urging force, and the closed chuck portion 151 is inserted inside the first rectangular coil 111. Next, the inserted chuck portion 151 is expanded inside the first rectangular coil 111 by the urging force of the spring 152, and the claw 151b is hooked on the lower end of the first rectangular coil 111 to mount the first rectangular coil 111 on the work chuck 150. The work chuck 150 gripping the first rectangular coil 111 is moved and rotated in accordance with the machining operation of the second rectangular coil 112.

However, the conventional winding device using the steady rest plate 170 and the work chuck 150 has the following problems.

First, regarding the steady rest plate 170, when the first rectangular coil 111 is processed at high speed, the first rectangular coil 111 being formed vibrates greatly due to inertia, and the surface of the first rectangular coil 111 is formed by the steady rest plate 170. There is a risk of rubbing and scratching. Therefore, in order to suppress the vibration of the first rectangular coil 111 being formed, it is conceivable to strongly press the first rectangular coil 111 being formed from above with the steady rest plate 170, but this imposes an extra burden on the equipment. However, if the material is changed in order to increase the strength of the equipment, the work chuck 150 or the like becomes heavy, and it may be difficult to perform machining at high speed.

Further, regarding the work chuck 150, when the processing of the second rectangular coil 112 is performed at high speed, the first rectangular coil 111 gripped by the work chuck 150 that moves at high speed in accordance with the processing is greatly shaken, and the first rectangular coil 111 is moved. It may fall off the work chuck 150. Therefore, for example, it is conceivable to increase the load of the spring 152 used to expand the chuck portion 151 to grip the first rectangular coil 111 more firmly. In this case, the chuck portion is inside the first rectangular coil 111. When inserting the 151, it is necessary to increase the capacity of the actuator or the like used to close the chuck portion 151 against the urging force of the spring 152, which causes a problem that the equipment cost increases. Further, it is conceivable to increase the claw 151b at the tip of the chuck portion 151 to increase the hooking allowance on the lower end of the first rectangular coil 111, but in this case, the inner peripheral surface of the first rectangular coil 111 and the chuck portion may be increased. There is a problem that the clearance with 151 becomes small, and when the chuck portion 151 is inserted inside the first rectangular coil 111, the first rectangular coil 111 is damaged by interfering with the claw 151b.

Therefore, in the present embodiment, the steady rest plate 170 is removed, and the first rectangular coil being formed is spirally stacked between the chuck portion 51 of the work chuck 50 and the guide column 53 provided on the outside thereof. It is designed to accommodate 11.

9 is a perspective view schematically showing the work chuck 50, FIG. 10 is a view schematically showing the positional relationship between the chuck portion 51 and the guide column 53 and the first rectangular coil 11, and FIG. 11 is a diagram schematically showing the positional relationship. , Is a diagram schematically showing the relationship between the work chuck 50 and the first rectangular coil 11. As shown in FIG. 9, the work chuck 50 includes a gantry 54 connected to the servomotor 44, four expandable and contractible chuck portions 51 supported by the gantry 54, and four work chucks 50 attached to the gantry 54 and extending downward. It has a guide support column 53 and an air cylinder 55 (see FIG. 11).

As shown in FIG. 11A, each chuck portion 51 is rotatably supported by the gantry 54 around the shaft portion 51a via the shaft portion 51a, and a claw 51b extending outward is provided at the lower end portion. It is provided. The chuck portion 51 is constantly urged by the spring 52 in the direction in which the lower end expands. An air cylinder 55 is attached to the upper end of the chuck portion 51, and by expanding the upper end of the chuck portion 51 by the air cylinder 55, the lower end of the chuck portion 51 closes (shrinks) against the urging force of the spring 52. It has become like. The expansion and contraction of the chuck portion 51, in other words, the drive of the air cylinder 55 is controlled by the control device 60.

The four guide columns 53 attached to the gantry 54 and extending downward are arranged around the chuck portion 51. More specifically, as shown in FIG. 10, the four guide columns 53 are arranged around the chuck portion 51 so that a space capable of accommodating the first rectangular coil 11 is formed between the four guide columns 53 and the chuck portion 51. Has been done.

Therefore, as shown in FIG. 11C, in the work chuck 50, the chuck portion 51 expands inside the first rectangular coil 11 due to the urging force of the spring 52, and the claw 51b is caught on the lower end of the first rectangular coil 11. This makes it possible to grip the first rectangular coil 11 between the chuck portion 51 and the guide support column 53.

<Control during formation of the first rectangular coil>
When forming the first rectangular coil 11, the control device 60 has a flat angle so that the first rectangular coil 11 being formed, which is spirally stacked, is accommodated between the chuck portion 51 and the guide support column 53. The work chuck 50 is configured to move and rotate (rotate) around a vertical axis according to the feeding and bending operation of the lead wire 13. Specifically, the control device 60 moves the work chuck 50 so as to draw the first motion locus T1 shown in FIG. 12, and at the time of movement in the white arrow II and the black-painted arrow IV of the first motion locus T1. The work chuck 50 is configured to rotate on its axis.

More specifically, the control device 60 will drive the Z-direction moving mechanism 41 to lower the work chuck 50 to the vicinity of the coil winding unit 3 to form the work chuck 50 as shown in FIG. 11 (a). It is arranged above the first rectangular coil 11 of the above. At this time, the plane position and the longitudinal direction of the first rectangular coil 11 to be formed are aligned with the plane position and the longitudinal direction of the work chuck 50 (vertical direction in FIG. 10). Further, by driving the air cylinder 55, the lower end of the chuck portion 51 is closed (shrinked) against the urging force of the spring 52.

Then, the flat conductor 13 is sent out from the state A in FIG. 12 by the length corresponding to the short side 11b, and when the state B in FIG. 12 is reached, the control device 60 moves in the X direction. 42 is driven to move the work chuck 50 in the delivery direction (X direction) of the flat conductor wire 13 as shown by the white arrow I in the first operation locus T1. Next, by performing edgewise bending from the state B in FIG. 12, the control device 60 reaches the state D through the state C in FIG. 12, and the control device 60 moves the X-direction moving mechanism 42 and the Y-direction moving mechanism 43. Drives the servomotor 44 while moving the work chuck 50 in a curved trajectory as shown by the white arrow II in the first operation locus T1 to drive the work chuck 50 90 ° clockwise in FIG. Rotate. Next, the flat conductor 13 is sent out from the state D in FIG. 12 by the length corresponding to the long side 11a, and when the state E in FIG. 12 is reached, the control device 60 sets the X-direction moving mechanism 42. It is driven to move the work chuck 50 in the X direction as shown by the black-painted arrow III in the first operation locus T1. Next, by performing edgewise bending from the state E in FIG. 12, when returning to the state A through the state F in FIG. 12, the control device 60 moves the X-direction moving mechanism 42 and the Y-direction moving mechanism 43. Drives the servomotor 44 while moving the work chuck 50 in a curved trajectory as shown by the black arrow IV in the first operation locus T1 to drive the work chuck 50 90 ° clockwise in FIG. Rotate. In addition, in order to form the first rectangular coil 11 in one stage, the first operation locus T1 shown in FIG. 12 is drawn twice.

In this way, the operation of moving and rotating the work chuck 50 so as to draw the first operation locus T1 is repeated until the formation of the first rectangular coil 11 is completed, so that the operation is above the first rectangular coil 11 being formed. The work chuck 50 is always positioned in the same posture as the first rectangular coil 11 being formed.

Therefore, in the process in which the first rectangular coil 11 is formed one step at a time and stacked in a spiral shape, as shown in FIG. 11B, the first rectangular coil 11 being formed is guided to the chuck portion 51. It will be sequentially accommodated between the support and the support 53. Then, when the formation of the first rectangular coil 11 is completed, the control device 60 stops driving the air cylinder 55, and as shown in FIG. 11C, attaches a claw 51b to the lower end of the first rectangular coil 11. By hooking, the first rectangular coil 11 is gripped between the chuck portion 51 and the guide support column 53.

14 is a diagram showing an operation flow of a winding device, FIG. 14A shows an operation flow of the present invention, and FIG. 14B shows a conventional operation flow. In the conventional winding device, when the cycle is started in step SB1, the steady rest plate 170 is first lowered in step SB2, whereas in the winding device 1 of the present embodiment, the cycle is started in step SA1. Then, first, the work chuck 50 is lowered in step SA2.

Next, in the conventional winding device, the work chuck 150 is not operated even if the winding of the first rectangular coil 111 is started in step SB3, but in the winding device 1 of the present embodiment, the first rectangular coil is not operated in step SA3. When the winding of 11 is started, in step SA4, the work chuck 50 is controlled to move and rotate so as to draw the first operation locus T1.

Next, in the conventional winding device, when the winding of the first rectangular coil 111 is completed in step SB4, the steady rest plate 170 is raised in step SB5, and then the work chuck 150 is lowered (operated) for the first time in step SB6. In step SB7, the work chuck 150 grips the first rectangular coil 111, and in step SB8, the process proceeds to the formation of the second rectangular coil 112. On the other hand, in the winding device 1 of the present embodiment, when the winding of the first rectangular coil 11 is completed in step SA5, the first rectangular coil 11 is gripped by the work chuck 150 as it is in step SA6, and the first rectangular coil 11 is held in step SA7. 2 Shift to the formation of the rectangular coil 12.

As described above, according to the present embodiment, since the first rectangular coil 11 being formed is sandwiched between the chuck portion 51 and the guide support column 53, it is being formed even when the machining operation is performed at high speed. It is possible to suppress the large vibration of the first rectangular coil 11. Moreover, since the work chuck 50 moves and rotates according to the feeding and bending operation of the flat conductor wire 13, in other words, it moves in the same manner as the first rectangular coil 11 being formed, which is spirally stacked. It is possible to reliably prevent the surface of the first rectangular coil 11 from being scratched by rubbing against the chuck portion 51 and the guide column 53.

<Control during formation of the second rectangular coil>
When forming the second rectangular coil 12, the control device 60 has a relative positional relationship between the first rectangular coil 11 after completion of formation held by the work chuck 50 and the second rectangular coil 12 being formed. The work chuck 50 is configured to move and rotate (rotate) around the vertical axis according to the feeding and bending operation of the rectangular lead wire 13 so as to maintain the above position. Specifically, the control device 60 moves the work chuck 50 so as to draw the second operation locus T2 shown in FIG. 13, and also moves the second motion locus T2 in the II, IV, VI, and VIII parts. Occasionally, the work chuck 50 is configured to rotate.

More specifically, the control device 60 drives the X-direction moving mechanism 42 when the flat conductor wire 13 is delivered by the length corresponding to the long side 12a, and the I portion and the V portion in the second operation locus T2. As described above, the work chuck 50 and the first rectangular coil 11 gripped by the work chuck 50 are moved in the delivery direction (X direction) of the flat conductor wire 13. Further, the control device 60 drives the X-direction moving mechanism 42 when the flat conductor wire 13 is sent out by the length corresponding to the short side 12b, and is like the parts III and VII in the second operation locus T2. The work chuck 50 and the first rectangular coil 11 are moved in the X direction. Further, the control device 60 drives the X-direction moving mechanism 42 and the Y-direction moving mechanism 43 when performing edgewise bending, and the II, IV, VI, and VIII parts in the second operation locus T2. As described above, while moving the work chuck 50 and the first rectangular coil 11 in a curved trajectory, the servomotor 44 is driven to rotate the work chuck 50 clockwise by 90 ° in FIG.

In this way, according to the machining operation of the second rectangular coil 12, part I (long side feed) → part II (bending) → part III (short side feed) → part IV (bending) in the second operation locus T2. ) → V part (long side feed) → VI part (bending) → VII part (short side feed) → VIII part (bending) By repeating the movement and rotation of the work chuck 50, the first rectangular coil It is possible to form the second rectangular coil 12 while maintaining the relative positional relationship between the 11 and the second rectangular coil 12.

Further, when the second operation locus T2 is drawn once, the second rectangular coil 12 is formed one step at a time and is piled up in a spiral shape. Therefore, the control device 60 controls the height of the second rectangular coil 12 being formed. It is configured to drive the Z-direction moving mechanism 41 to raise the work chuck 50 and the first rectangular coil 11 in response to the change in the spiral.

As described above, in the present embodiment, since the first rectangular coil 11 is gripped between the chuck portion 51 and the guide support column 53, the load of the spring 52 used to expand the chuck portion 51 can be increased or the chuck can be chucked. The first rectangular coil 11 after the formation is completed can be firmly gripped between the chuck portion 51 and the guide support column 53 without increasing the size of the claw 51b at the tip of the portion 51. Therefore, even if the processing operation of the second rectangular coil 12 is performed at high speed, the first rectangular coil 11 gripped by the work chuck 50 moving at high speed does not shake significantly, and therefore the first rectangular coil 11 works. It is possible to prevent the chuck 50 from falling off. Further, since the claw 51b is not enlarged, it is possible to prevent the first rectangular coil 11 from being damaged by interfering with the claw 51b when the chuck portion 51 is pulled out from the first rectangular coil 11.

Further, by moving and rotating the work chuck 50 according to the delivery and bending operation of the flat conductor wire 13, the first rectangular coil 11 after the formation is completed and the second rectangular coil being formed are gripped by the work chuck 50. Since the relative positional relationship with the 12 is maintained, it is possible to prevent the first and second rectangular coils 11 and 12 from being deformed and the dimensional accuracy from being deteriorated.

Moreover, in the present embodiment, by devising the control of the work chuck 50, the guide column 53 is arranged around the chuck portion 51, and the first rectangular coil 11 can be damaged or the first rectangular coil can be damaged. The first rectangular coil 11 and the second rectangular coil 12 connected by the flat conductor wire 13 can be continuously formed without dropping the 11.

(Other embodiments)
The present invention is not limited to embodiments and can be practiced in various other forms without departing from its spirit or key features.

In the above embodiment, the chuck portion 51 is provided with the spring 52 and the air cylinder 55 as shown in FIG. 11, but the chuck portion 51 is not limited to this as long as it is configured to be expandable and contractible, for example, the spring 52 and The arrangement of the air cylinder 55 may be changed, or an actuator or the like may be used instead of the spring 52 and the air cylinder 55.

Thus, the above embodiments are merely exemplary in all respects and should not be construed in a limited way. Further, all modifications and modifications that fall within the equivalent scope of the claims are within the scope of the present invention.

According to the present invention, even when the second rectangular coil is formed while gripping the first rectangular coil, it is possible to prevent the first rectangular coil from being damaged or dropped by a simple configuration. It is extremely useful when applied to winding devices.

1 Winding device 11 1st rectangular coil 12 2nd rectangular coil 13 Flat conductor wire 50 Work chuck 51 Chuck part 53 Guide strut 60 Control device

Claims (1)

The first rectangular coil that is stacked spirally while alternately sending out and bending the flat conductor, and the first rectangular coil that is connected to the first rectangular coil are alternately sent out and bent while being stacked spirally. It is a winding device capable of continuously forming a second rectangular coil to be formed.
The chuck portion and the guide are provided by having a chuck portion that can be expanded and contracted and a plurality of downwardly extending guide columns arranged around the chuck portion, and by expanding the chuck portion inside the first rectangular coil. A work chuck capable of gripping the first rectangular coil between the columns and the support.
A control device that controls the movement and rotation of the work chuck around the vertical axis is provided.
The above control device
When forming the first rectangular coil, the flat conductor is sent out and the flat conductor is sent so that the first rectangular coil being formed spirally stacked is accommodated between the chuck portion and the guide support. While controlling the work chuck according to the bending operation,
When forming the second rectangular coil, the relative of the first rectangular coil after the formation is completed held by the work chuck by expanding the chuck portion and the second rectangular coil being formed. A winding device characterized in that the work chuck is controlled according to a feeding and bending operation of a rectangular lead wire so that a positional relationship is maintained.

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