JPH0562854A - Method and apparatus for automatic taping for coil - Google Patents

Abstract

(57) [Abstract] [Purpose] An insulating tape, which is cut to a preset length in a state where a predetermined tension is always applied, is continuously attached around the coil without stopping halfway. [Structure] The starting end of the tape fed out from the tape roll is once held, and the starting end of the held tape is pulled, and after pulling out from the tape roll by the length necessary for winding around the coil, , The tape is cut in advance at the set length position, the tip of the cut tape piece is conveyed to the position on the side of the coil while tension is applied to the cut tape piece, and then the tip of the tape piece is cut. The tape is adhered to the side of the coil by pressing, and the tape is adhered to the periphery of the coil by rotating the coil while the tape is being pressed from the outside.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic taping device for a coil for interlayer insulation between a lower layer winding of a coil and an upper layer winding wound further on the coil.

[0002]

2. Description of the Related Art In a conventional automatic taping device for this type of coil, a bobbin is automatically mounted on a spindle, first a lower layer winding is applied, and then an insulating tape as interlayer insulation is wound on the lower layer winding. , Apply the upper layer winding on it,
It is designed to automatically wind coils such as transformers. At this time, the insulating tape is pulled out from the tape roll wound in a roll shape, the drawn tape start end is attached to the coil, and the spindle is rotated, whereby the insulating tape is wound around the coil, and this winding is performed. In the middle of the process, cut the insulating tape at the position of the predetermined winding length, and then rotate the spindle further, and wind the remaining part of the insulating tape that became the free end by cutting and stick it around the coil. It is designed to be worn.

[0003]

However, in the above-mentioned conventional type, once the starting end of the insulating tape is attached to the coil, the spindle is rotated while feeding out the insulating tape from the tape roll to attach the insulating tape around the coil. However, when the distance between the coil and the cutter reaches the set length, it is cut by the cutter, and then the remaining insulating tape after cutting is attached around the coil as the coil rotates. The remaining insulating tape after cutting at the end becomes a free end and is held around the coil without being guided and is wound around the coil without being guided. It may be misaligned without being wound properly. If the positional deviation occurs in this way, the lower layer winding and the upper layer winding may come into contact with each other and may not function as interlayer insulation. In particular, since the tape is applied with tension applied before cutting and suddenly without tension after cutting, it may cause the insulating tape to not be wrapped around the coil neatly. ing. In addition, since the rotation of the spindle is temporarily stopped due to the cutting of the insulating tape by the cutter during the application of the insulating tape around the coil, it is possible to wind it more neatly as compared to the case where it is applied continuously without stopping. Not to mention the cause of not being able to gain, the control of the spindle rotation and the control of the operation of the cutter, especially the control of the mutual connection when the winding length of the insulating tape around the coil is changed due to changes in specifications. There is a problem that it becomes complicated.

In view of the above circumstances, the present invention, therefore, continuously attaches an insulating tape, which is cut to a preset length in a state where a predetermined tension is always applied, around the coil without stopping halfway. It is an object of the present invention to provide an automatic coil taping method and apparatus for the coil, which solves the above conventional problems.

[0005]

The present invention has been accomplished to achieve the above object. In claim 1, the starting end of the tape fed from the tape roll is once held and the held tape is held. After pulling the starting end of the tape and pulling it out from the tape roll by the length required to wind it around the coil, the tape was cut beforehand at the position of the set length, and tension was applied to the cut tape piece. In this state, the tip of the cut tape piece is conveyed to a position on the side of the coil, and then the starting end of the tape piece is pressed against the side of the coil to be stuck, and the tape piece is pressed from the outside. The present invention is characterized by an automatic taping method for a coil, in which the coil is rotated as it is and a tape piece is attached around the coil.
In claim 2, a holding chuck that holds the tape starting end fed from the tape roll in a non-falling manner, and the tape starting end held by the holding chuck is sandwiched to pull out to a set length to be cut and cut the tape. A pull-out chuck for transporting the starting end of the subsequent tape piece to the side of the coil to be attached, a cutter for cutting the tape pulled out to the set length by the pull-out chuck, and a cutter after cutting with the cutter. A tensioning chuck that moves as the tape piece is conveyed by the pulling chuck while holding the rear end of the tape piece, a sticking tool that presses the tape piece around the coil, and a tape piece that is pasted with the coil. It features an automatic tape taping device for the coil, which comprises a rotating spindle for this purpose.

An embodiment of the automatic coil taping method and apparatus according to the present invention will be described below with reference to the drawings. First, an apparatus for carrying out the automatic coil taping method will be described. In FIG. 1, reference numeral 1 is an index table. The index table 1 has a spindle box 2 mounted thereon, a winding portion for winding the bobbin from a mounting portion of the bobbin on the spindle of the spindle box 2, and a winding layer before the upper layer winding such as a secondary winding. An automatic taping section for applying an insulating tape for interlayer insulation at a stage, and a carry-out section for carrying out the spindle box 2 toward another processing device for applying an upper layer winding such as a secondary winding on the interlayer insulating tape. To be able to move.
When the spindle box 2 is placed on the index table 1, it is automatically connected to a power mechanism attached to the index table 1 so that the spindle 3 as shown in FIGS. 1 and 2 can be rotated and controlled. Is becoming The spindle 3 is automatically loaded with a bobbin, and after the primary winding, that is, the lower winding is applied in the winding portion, the index table 1 moves to position the spindle box 2 in the automatic taping portion. ing.

As shown in FIGS. 3 and 4, the automatic taping section is provided with a plurality of tape rolls 4 each having an adhesive tape wound around it under the spindle box 2. The tape roll 4 is rotatably mounted on the stand 4a of the base 5. As shown in FIG. 3, the tape roll 4 is mounted in the thickness direction (roll radial direction) in parallel with the surface of the base 5 as well as in the thickness direction (roll It can also be mounted in a direction (radial direction) orthogonal to the surface of the base 5. Further, the stand 4a to be mounted may be of a type in which it is rotatably inserted into a pin, in addition to the type of being sandwiched by three receiving rolls as shown in FIGS. The insulating tape 6 pulled out from each tape roll 4 is carried into the positioning guide member 8 via the guide roll 7. The positioning guide member 8 is disposed on the surface of the base 5 above the tape roll 4, and is composed of a fixed member 8a and a movable member 8b, which are united by the elastic biasing force of the spring 9.
The movable member 8b can be swung against the elastic biasing force of the spring 9 to be separated from the fixed member 8a.
As shown in FIG. 10, the fixing member 8a has the insertion groove 10 through which the insulating tape 6 is inserted and which has a width corresponding to the width of the insulating tape 6. On the other hand, a pressing roll 11 for pressing the insulating tape 6 in the fitting groove 10 is rotatably supported at the upper and lower ends of the movable member 8b. As the insulating tape 6, only one surface is used as an adhesive surface, and the adhesive surface is pressed by the pressing roll 11. A holding chuck 12 is arranged above each of the positioning guide members 8. The holding chuck 12, as shown in FIGS. 3 and 5,
The operating levers 15 and 16 which reciprocate by the air cylinders 13 and 14 perform an opening / closing operation, that is, a clamping operation. It is also possible to adopt a type in which an air cylinder is directly connected to each of the holding chucks 12 to perform a holding operation. A cutter 17 is arranged at a close position on each holding chuck 12. Each cutter 17 cuts the insulating tape 6 extending upward from the holding chuck 12 by the reciprocating operation of the operating lever 19 by the air cylinder 18. A tension chuck 20 is arranged above each cutter 17 so as to be vertically movable. As shown in FIGS. 4, 5, 7, and 9, each tension chuck 20 is directly connected to an air cylinder 21 so that the tension chuck 20 can be independently opened / closed, that is, pinched. Frame 2 on which the cylinder 21 is fixed
2 is a linear motion bearing 23a and a rail 23
It is adapted to be vertically movable by the sliding mechanism 24 composed of b, respectively. Base 5
Is movable in the left-right direction by a power source such as an air cylinder due to the tension chuck 20 via a sliding mechanism 68. Each tension chuck 20 has a weight attached to the pedestal 22 so that the tension applied to the insulating tape piece described later can be set at any time. Further, the base 5 has a movable table 43 which moves to the left and right on the back surface thereof, and a pedestal 27 is movably mounted on the movable table 43 via a sliding mechanism 26 composed of a linear motion bearing 25a and a rail 25b. .. The moving table 43 can be moved left and right by an air cylinder 44 via a sliding mechanism 45. A nut member 28 is fixed to the pedestal 27, and a screw rod 29 screwed with the nut member 28 is rotated to move the pedestal 27 up and down together with the nut member 28.
The screw rod 29 is connected to a drive motor 34 via a power transmission mechanism 33 including timing pulleys 30 and 31 and a timing belt 32 as shown in FIGS. 7 and 8. The drive motor 34 and the screw rod 29 are provided on the moving table 43. The drive motor 34 is numerically controlled. As shown in FIGS. 5 to 7 and 9, an L-shaped arm 36 is attached to the frame 27 via an air cylinder 35. Arm 36 and pedestal 2
A sliding mechanism 37 composed of a concave portion and a convex portion fitted into the concave portion is provided between the two and 7, and guides the movement of the arm 36 in the front-back direction due to the operation of the air cylinder 35. Air cylinders 38, 3 on the arm 36
A pull-out chuck 42 that is opened / closed by the operating levers 40 and 41 that are reciprocally moved by 9 is attached. The pull-out chucks 42 are provided by the number corresponding to the tape roll 4. Above the spindle box 2, as shown in FIGS. 1 and 2, a holding lever 46 as a sticking tool that moves up and down and reciprocates in the left and right directions is provided. When arranging the presser lever 46, first, as shown in FIG. 1, an up-and-down moving table 50 which is moved up and down by an air cylinder 48 via a connecting lever 49 is attached to a base 47. The vertically movable table 50 is guided by a guide rod 51 when vertically moved by the air cylinder 48. A reciprocating table 53 is mounted on the up-and-down moving table 50 so as to be movable left and right via a sliding mechanism 52 including a concave portion and a convex portion fitted into the concave portion. The reciprocating table 53 is the vertical table 50
It is connected to the air cylinder 54 installed in the above and reciprocates in the left-right direction by the air cylinder 54. A receiving cylinder 55 is fixed to the reciprocating table 53, and the pressing lever 46 is swingably supported on the receiving cylinder 55. At one end of the presser lever 46, there is provided a presser portion 46a for pressing the insulating tape piece 6a cut into a set length to the coil 56 as described later. The other end of the presser lever 46 can come into contact with the stopper 57. The stopper 57 is screwed into a U-shaped restriction piece 58 so that the protruding length can be adjusted. The restriction piece 58 is screwed to the reciprocating table 53,
In addition, the other end of the pressing lever 46 is made to face the U-shaped recess, so that the stopper 57 and the restricting piece 58 restrict the swing range of the pressing lever 46. A return spring 59 for elastically urging the pressing lever 46 toward the stopper 57 is hooked between the other end of the pressing lever 46 and the reciprocating table 53. A rotary shaft 60 is rotatably fitted in the receiving cylinder 55. One end of the rotating shaft 60 is made to project from the inside of the receiving cylinder 55, and this protruding portion is provided with
Further, as shown in FIG. 11, a tension lever 62 is attached via a bracket 61. The other end of the rotating shaft 60 is also projected from the inside of the receiving cylinder 55, and the engaging lever 63 is fixedly installed. The engaging lever 63 has a split groove 63a, and the engagement pin 64 is fitted and engaged in the split groove 63a. The engagement pin 64 is erected on an operating lever 65 mounted on the back surface of the reciprocating table 53 so as to be movable in the left-right direction. Operating lever 65
Is connected to an air cylinder 66 installed on the reciprocating table 53, and is moved in the left-right direction by the operation of the air cylinder 66.

Instead of the tension lever 62, a tension roll 67 as shown in FIGS. 2, 12 and 13 may be used. The tension roll 67 is rotatably supported by the bracket 62. Further, it is also possible to adopt a type in which the tension lever 62 and the tension roll 67 are not provided. In this case, by controlling the rotation angle and the rotation direction of the spindle 3 as will be described later, the pressure lever is replaced by the tension lever 62 or the tension roll 67. The lever 46 also has that function.

Next, an automatic coil taping method based on the above coil automatic taping device will be described.
First, the operator mounts the tape roll 4 on the stand 4a, pulls out the insulating tape 6 from the tape roll 4, and attaches the starting end of the insulating tape 6 with the holding chuck 12, and then starts the automatic taping operation. The lower layer winding is applied to the coil 56 of each spindle 3 of the spindle box 2 in the winding portion, and at the stage when this work is completed, the index table 1 moves to move the spindle box 2
Is placed on the automatic taping section as shown in FIG. Next, the drive motor 34 is driven to lower the pull-out chuck 42 via the gantry 27 and the arm 36. At this time, the air cylinder 35 is operated so that the arm 36, that is, the pull-out chuck 42 is pulled out to the front side so that it does not collide with other members such as the holding chuck 12, the cutter 17 and the tension chuck 20 when descending. .. When the pull-out chuck 42 descends below the holding chuck 12, the air cylinder 35 operates to pull out the pull-out chuck 4.
2 is retracted toward the insulating tape 6 to hold the chuck 1
When it is located directly below 2, the pull-out chuck 42 is closed via the operating levers 40 and 41 by the operation of the air cylinders 38 and 39, and the insulating tape 6 is sandwiched. After that, the holding chuck 12 is opened by operating the air cylinders 13 and 14 via the operating levers 15 and 16, and the holding of the starting end of the insulating tape 6 is released. When the holding chuck 12 is opened, the pull-out chuck 42 can pass through the opened gap, so that the driving motor 34 drives the screw rod 29 to rotate the power transmission mechanism 33, the pedestal 27, and the arm 36. Through, the pull-out chuck 42 rises while holding the starting end of the insulating tape 6. Drawing chuck 42
Passes through the open gap of the holding chuck 12, the side of the cutter 17, and the open gap of the tension chuck 20 which has already been opened, and temporarily stops at a position of a preset length from the cutter 17. Next, after the tension chuck 20 holds the insulating tape 6 by the operation of the air cylinder 21, the operation lever 1 is operated by the operation of the air cylinder 18.
The cutter 17 is moved via 9 to cut the insulating tape 6. The cut length of the insulating tape 6 is set to an optimum length for winding and adhering it around the coil 56, and this set length can be arbitrarily changed by changing the rising height of the pull-out chuck 42. obtain. Therefore, the tension chuck 20
The rear end of the insulating tape piece 6a cut into the set length is clamped. After that, the pull-out chuck 42 moves up again,
The starting end (upper end) of the insulating tape piece 6a is positioned on the side of the coil 56. Insulating tape piece 6 by pull-out chuck 42
At the time of ascending, the tension chuck 20 holds the rear end (lower end) of the insulating tape piece 6a while holding the insulating tape piece 6a.
Along with this, tension is applied to the insulating tape piece 6a by the weight of the tension chuck 20 itself. Then
The moving table 43 is moved to the right side in FIG. 2 by the air cylinder 44, whereby the pull-out chuck 42 is moved toward the coil 56 side via the pedestal 27 and the arm 36, and the starting end of the insulating tape piece 6a is coiled. 56, that is, it is attached on the lower layer winding. At this time, the base 5 is moved by a power source such as an air cylinder, and the tension chuck 20 as well as the pull-out chuck 42 and the insulating tape piece 6a are moved.
By moving the whole, the starting end of the insulating tape piece 6a is moved to the coil
It can also be attached to 6. Thereafter, the reciprocating carriage 53 is moved to some extent even after the pressing lever 46 comes into contact with the insulating tape piece 6a attached to the side surface of the coil 56 by the operation of the air cylinder 54. Therefore, the presser lever 4
The elastic biasing force of the return spring 59 pushes and holds the starting end of the insulating tape piece 6 a toward the coil 56. On the other hand, the insulating tape piece 6a by the pull-out chuck 42
The clamping of the start end of the drawing is released, and the pull-out chuck 42 is moved to the front side by the operation of the air cylinder 35. As shown in FIG. 11, the starting end portion of the insulating tape piece 6a which is not adhered to the peripheral surface of the coil 56 and rises further upward is operated by the air cylinder 66 to actuate the tension lever 63 or the tension lever 63 through the actuation lever 65. The roll 67 is swung to attach the insulating tape piece 6a while bending the leading end portion of the insulating tape piece 6a toward the upper surface of the coil 56. Then
While the spindle 3 is rotated and the pressing lever 46 presses the insulating tape piece 6a against the coil 56, the insulating tape piece 6a is wound around the coil 56 and attached. At this time,
The tension chuck 20 holds the rear end of the insulating tape piece 6a and rises together with the insulating tape piece 6a as it is wound around the coil 56. Therefore, even when the insulating tape piece 6a is attached to the coil 56, insulation is obtained. Tension is applied to the non-adhered portion of the tape piece 6a by the weight of the tension chuck 20 so as to prevent the uneven winding and sticking of the insulating tape piece 6a due to slack or the like. As the insulating tape piece 6a is attached to the coil 56,
Although the tension chuck 20 moves up, the tension chuck 20 is actuated by the air cylinder 21 immediately before the tension chuck 20 comes into contact with the coil 56, that is, when the unattached portion of the insulating tape piece 6a is reduced. The holding of the rear end of the insulating tape piece 6a by 20 is released. By this release, the tension chuck 20 falls to a predetermined position just above the cutter 17 by its own weight. On the other hand, the rear end of the insulating tape piece 6a is firmly attached to the end of the coil 56 while being pressed by the pressing lever 46 by the rotation of the spindle 3. After the work of attaching the insulating tape piece 6a is completed, the spindle box 2 is conveyed toward the automatic winding portion by the movement of the index table 1 in order to further apply the upper layer winding on the insulating tape piece 6a. When the next spindle box 2 to be processed is sent to the automatic taping unit, the pull-out chuck 42 descends to clamp the insulating tape 6 below the holding chuck 12, and the above operation is repeated thereafter.

The tension lever 62 and the tension roll 6
In a device which does not have 7, after attaching one end of the insulating tape piece 6a to the side surface of the coil 56, the spindle 3 is once rotated about 90 degrees clockwise in FIG. Using the insulating tape piece 6a
After sticking the rising start end portion of the coil around the coil 56, the spindle 3 is rotated in the reverse direction, that is, rotated in the counterclockwise direction as described above, and the remaining insulating tape piece 6a is stuck around the coil 56. Further, the present invention can be directly used not only for interlayer insulation but also for other taping such as exterior taping.

As described above, according to the automatic coil taping method and its apparatus of the present invention, since the insulating tape piece is always attached to the periphery of the coil with a predetermined tension applied, the insulating tape piece is positioned around the coil. Without shifting
In addition, it can be applied cleanly with a specified tension at all times, and there is no need to stop for a day to cut the insulating tape with a specified winding length during the application of the insulating tape to the coil. It is possible to provide an automatic taping method for a coil and an apparatus therefor, which can solve the conventional problem that the coil cannot be neatly wound and adhered to the coil due to a change in tension or a positional shift caused by a temporary stop on the way.

[Brief description of drawings]

FIG. 1 is a side view of essential parts showing a spindle box and a pressing lever of an automatic coil taping device according to the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a front view showing the vicinity of a tape roll stand, a holding chuck, and a drawing chuck.

FIG. 4 is a left side view of FIG.

5 is a rear view of the main part of FIG.

FIG. 6 is a right side view of FIG.

FIG. 7 is a side view showing the main structure of FIG.

FIG. 8 is a structural view of a main part showing a mechanism for vertically moving a drawing chuck.

FIG. 9 is a plan view of FIG.

FIG. 10 is a sectional view of a main part of a positioning guide member.

FIG. 11 is an explanatory diagram showing the operation of the presser lever.

FIG. 12 is a front view showing a sticking roll.

FIG. 13 is an explanatory diagram showing a structure of a sticking roll.

[Explanation of symbols]

 1 Index Table 2 Spindle Box 3 Spindle 4 Tape Roll 6a Insulating Tape Piece 8 Positioning Guide Member 12 Holding Chuck 17 Cutter 20 Tension Chuck 42 Pullout Chuck 56 Coil

Claims (2)

[Claims] 1. A starting end of a tape fed from a tape roll is once held, and the starting end of the held tape is pulled, and the tape is pulled out from the tape roll by a length necessary for winding around the coil. After that, the tape is cut in advance at the position of the set length, and the starting end of the cut tape piece is conveyed to the position on the side of the coil with tension applied to the cut tape piece, and then the tape piece is cut. The coil is characterized in that the tip of the tape is pressed against the side of the coil to be attached, and the coil is rotated while the tape piece is being pressed from the outside so that the tape piece is attached around the coil. Automatic taping method. 2. A holding chuck that holds a tape start end fed from a tape roll in a non-falling manner, and a tape start end held by the holding chuck is sandwiched to pull out to a set length to be cut and cut the tape. A pull-out chuck that conveys the starting end of the subsequent tape piece to the side of the coil to be attached, a cutter that cuts the tape that is pulled out to the set length by the pull-out chuck, and a cutter after cutting with the cutter. A chuck for tension that moves with the transport of the tape piece by the pull-out chuck while holding the rear end of the tape piece, a sticking tool that presses the tape piece around the coil, and a tape piece with the coil attached. An automatic taping device for coils, characterized in that it comprises a spindle that rotates in a horizontal direction.