JPH0471355A - Automatic taping device for stator coil - Google Patents

Abstract

PURPOSE:To improve the taping states of each corner section by determining the center of turning of a movable table so that the turning radius of the center of rotation of a taping head installed to the movable table is equalized to the bend radius of each corner section of a stator coil conducting taping. CONSTITUTION:A movable table 13 is mounted to a movable base 3 rotatably in a rectilinear movement manner. A taping head H is fitted to the upper section of a frame 18 set up to guide rails 17 installed to the movable table 13. When the taping head H reaches the corner section of a stator coil C and the corner section of the stator coil C is taped while rotating the taping head H, the center of turning S of the movable table 13 intrudes to the inside only by (e) from the center of the stator coil C in consideration of the state in which the stator coil C is set. The quantity of displacement (e) equalizes to the bend radius R of the corner section of the stator coil C. The taping head H is turned accurately along the corner section of the stator coil C, thus improving the taping state of the corner section.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an automatic stator coil taping device that is capable of automatically taping an insulating tape to a stator coil used in a large rotating electric machine. More specifically, the present invention relates to an automatic taping device that improves the taping condition of each corner of a stator coil and enables highly accurate and highly efficient taping.

[Conventional technology]

Taping the stator coils of large rotating electric machines with insulating tape is the most man-hour-intensive task in coil manufacturing, and although there have been devices that automatically do this, they are difficult to achieve in terms of taping accuracy and efficiency. was not satisfactory.

FIGS. 8 and 9 show schematic diagrams of conventional automatic taping devices. In this device, a taping head 52 is placed on a base 51.
The insulating tape 53 attached in a wound state is rotated by a motor 54. On the other hand, on the back side of the J base 51, a pinion 55 and a guide roller 56 are provided.
The pinion 55 meshes with a rack 57a formed on the outer peripheral surface of the guide rail 57, which has the same shape as the stator coil C, so that both sides of the guide rail 57 are mounted facing each other. The pinion 55 is sandwiched between the pinion 55 and the guide roller 56, and the pinion 55 is driven by a motor 58 to move the base 51 along the guide rail 57, thereby taping the stator coil C.

For this reason, the above-described taping apparatus has the following problems.

(1) Guide rails must be manufactured and prepared in accordance with the number of large and small stator coils, and
The guide rail must be replaced every time the type of stator coil to be taped changes. As a result,
It takes a lot of time to change setups.

(2) Although the overall shape of the guide rail is the same as that of the stator coil, it is difficult to match the radius of curvature of both corners, so the taping condition of the corners of the stator coil is particularly poor. There is a problem.

(3) The rank provided on the guide rail and the pinion attached to the device are engaged, and the entire device is moved only by the drive of this pinion, so the device cannot be moved quickly and the speed of movement of the device is slow. . For this reason, work efficiency is low.

(4) In addition, the bent portions at both ends of the stator coil bent into a tortoiseshell shape and the portions close to these are taped manually, and the other portions are taped using a device, so the insulating tape is applied by the device. When taping in several layers, a predetermined step is provided for each layer at the start and end points of the taping, thereby preventing faults from forming at the connection between the taped part by the device and the taped part by hand. . In this way, when taping in several layers, the process of taping by creating steps in the tape at the start and end points of the taping is called "paragraph control," but in conventional equipment, this "paragraph control" ” was awkward.

[Problem to be solved by the invention]

In view of the problems of the conventional taping devices as described above, the present invention improves the taping condition of each corner, and also improves the taping condition of several types of stator coils with different sizes and shapes using a single device. The objective is to enable taping of stator coils with high accuracy and efficiency.

[Means to solve the problem]

In order to solve this problem, the means adopted in the present invention is such that a movable table is movable on the base, linearly movable by the first linear moving means, and centered around its own longitudinal center part by the turning means. a stator that is rotatably mounted, and a taping head is mounted on the movable table so as to be linearly movable by a second linear moving means, and a turning radius of the center of rotation of the taping head mounted on the movable table performs taping; The turning center of the movable table is determined to be equal to the bending radius of each corner of the coil.

[Action of the invention]

First, the movable table that moves linearly on the base is positioned at one end of this linear movement, and the moving direction of the taping head with respect to the movable table is set to be parallel to the end of the stator coil. Then, in this state, the taping head is moved linearly on the movable table by the second linear moving means to tape the end portion of the stator coil.

Immediately before the taping head enters the corner of the stator coil, the linear movement of the taping head is decelerated, and at the same time the movable chill pull starts to rotate by the rotating means, thereby rotating the taping head and moving the corner of the stator coil. Once a portion of the taping is performed and the moving direction of the taping head mounted on the movable table becomes parallel to the straight part of the stator coil, the rotation of the movable table is stopped. Here, when the movable table rotates, the position of the taping head with respect to the movable table is fixed, and the turning radius of the rotation center of the taping head is determined to be equal to the bending radius of a part of each corner of the stator coil. ing. Therefore, the taping head turns correctly along the corner portion of the stator coil, and the taping condition of the corner portion of the coil is improved.

After taping the corners of the stator coil,
The taping head does not move relative to the movable table, but the movable table itself moves linearly by the first linear moving means to tape the linear portion of the stator coil. By moving the movable table in a straight line, taping and
Immediately before the Rad enters the other corner of the stator coil, the linear movement of the movable table is decelerated, and at the same time the movable table starts to rotate by the rotating means, thereby causing the taping head to rotate in the same manner as above. , Tape the other corners of the stator coil. When the moving direction of the taping head with respect to the movable table becomes parallel to the other end of the stator coil due to the rotation of the movable table, the rotation of the movable table is stopped, and in this state, the second linear movement means Tape the other end of the stator coil by moving the taping head in a straight line.

Nao, just before each corner, the speed of linear movement of the taping head or movable table is reduced, and this is combined with the rotation of the movable table to perform taping at each corner. When it enters, the linear movement of the taping head or movable table is stopped.

In this way, by combining the linear movement of the taping head on the movable table, the rotation of the movable table, and the linear movement of the movable table itself, the taping condition of the corner parts is improved and the taping of the stator coil is automatically performed. It can be carried out.

〔Example〕

Hereinafter, the present invention will be explained in more detail with reference to Examples.

FIG. 1 is a front view of an automatic taping device according to the present invention, FIG. 2 is a right side view, and FIG.
FIG. 4 is an enlarged view of the taping head I in FIG. 2, and FIG. 4 is a plan view of the automatic taping device.

1 to 4, two guide rails 2 are attached to the base 1 at a predetermined interval in the length direction of the base 1, and a movable base 3 is linearly moved on the guide rails 2. Possibly installed. A ball screw 5 is supported on the base 1 in the longitudinal direction of the base 1 via a bearing 4, and the ball screw 5 is screwed into a ball nut 6 attached to the lower surface of the movable base 3. . A chain (not shown) is hung between a chain gear 8 attached to the drive shaft 7a of the motor 7 and a chain gear 9 attached to one end of the ball screw 5. The ball screw 5 rotates in forward and reverse directions when driven. A movable table 13, which will be described later, is attached to the movable base 3, and this movable table 13 linearly moves by rotation of the ball screw 5. In this example,
The pole screw 5, the ball nut 6, and the motor 7 constitute a first linear movement means for linearly moving the movable table 13.

A movable table 13 is rotatably mounted on a frame 11 attached to a movable base 3 via a bearing 12.

That is, a reducer 14 is attached to the movable heir 3, and a drive shaft 14a of the reducer 14 is connected to a boss 15 attached to the lower surface of the movable table 13. The speed reducer 14 is driven by a turning motor 16 attached to the movable base 3.

Two guide rails 17 are attached to the movable table 13 at a predetermined interval, and a taping head H is attached to the upper part of a frame 18 attached to the guide rails 17. The taping head H rotates the rotating body 19 by rewinding the insulating tape 22 wound around the tape reel 21 attached to the rotating body 19 via the tension roller 23 and the guide roller 24. This configuration is such that the stator coil C disposed at the center of rotation of the body 19 is taped. The rotating body 19 has teeth formed on its outer peripheral surface and has a gear shape.
The teeth on the outer peripheral surface of this rotating body 19 and the two pinions 25 a
, 25b are in mesh with each other, and each pinion 25a,
The rotating body 19 is rotated by the driving rotation of the rotating member 25b. The driving force of the taping motor 26 is transmitted to the clutch 27,
The driving force transmitted to the clutch 27 is transmitted to the pinion 25a, and the driving force transmitted to the pinion 25a is transmitted to the pinion 25b, so that the rotating body 19 rotates.

Here, as shown in FIG. 2, the movable table 13
The rotation center S of is shifted by (e) from the rotation center 0 of the taping head H along the direction orthogonal to the moving direction A of the movable table 13. When looking at the state in which the stator coil C is pushed back, the center of rotation S of the movable table 13 is
It extends inward from the center of the stator coil C by (e).

The amount of deviation (e) is equal to the bending radius R of the corner portion of the stator coil C (see FIG. 6).

Further, a ball screw 28 is supported on the upper surface of the movable table 13 in the longitudinal direction of the movable table 13 via a bearing 20, and a frame 18 on which the ball screw 28 and the taping head H are attached. The taping head H is screwed together with a ball nut 29 attached to the lower surface of the taping head H, so that the taping head H is moved linearly by forward and reverse rotation of the ball screw 28. A motor 30 is attached to the lower surface of the movable table 13, and a chain 33 is hooked between a chain gear 31 attached to a drive shaft 30a of the motor 30 and a chain gear 32 attached to one end of the ball screw 28. installed, motor 3
The pol screw 28 rotates by the forward and reverse rotation of 0. In this embodiment, the ball screw 28, the ball nut 29, and the motor 30 constitute a second linear moving means for linearly moving the taping head H with respect to the movable table 13.

Further, two other guide rails 34 are attached to the rear of the guide rail 2 on the base 1, and coil stands 36 are vertically attached to two movable bases 35 that are movably attached to the guide rails 34. A gripping tool 3 is fixedly installed and is used to grip both end portions of the stator coil C.
7 are attached to each coil stand 36, respectively. Each movable base 35 on which a coil stand 36 is fixedly installed
A nand (not shown) is attached to the bottom surface of the nut, and a screw shaft (not shown) with a reverse thread formed from the center to both ends is screwed into each nut. A handle 40 attached to one end of the shaft
The distance between the two coil stands 36 can be adjusted by rotating the coil stand 36. In addition, 38.39.41 in the figure
detects the respective rotational speeds of the ball screws 5, 28, and the drive shaft 14a of the reducer 14, and determines the amount of movement of the movable table 13, the amount of movement of the taping head H relative to the movable table 13, and the amount of movement of the reduction gear 14, respectively. An encoder for reading the rotation angle of the drive shaft 14a is shown.

Next, a taping operation using the above-described taping device will be explained with reference to FIGS. 4, 5, and 7.

As shown in FIGS. 4 and 5, the bent portions at both ends of the stator coil C bent into a hexagonal shape are held by respective gripping tools 37 attached to the coil stand 36, and thereby the stator coil C is Coil C is set almost horizontally. In addition, in FIG. 7, Xl, X2, and X indicate the lengths of the left end portion, straight portion, and right end portion of the stator coil C, respectively, and θ0. θ2 represents the center angle of the left corner portion and the right corner portion of the stator coil C, respectively.

First, as shown by the solid line in FIG. 5, the movable table 13 that moves linearly on the base 1 is positioned at the left moving end, and the axis of the ball screw 28 attached to the movable table 13 and the stator coil are aligned. In this state, start the motor 30 and move the tabbing head H on the movable table 13 from the position shown by the two-dot chain line in the figure. When the point is moved linearly at a predetermined speed, the left end portion of the stator coil C is taped by the rotation of the taping head H (the taped portion is indicated by T).

When the encoder 39 detects the rotational speed of the ball screw 28 and reads that the taping head H has reached just in front of the left corner of the stator coil C, the motor 30 decelerates and moves the taping head H relative to the movable table 13. At the same time as the moving speed of the movable table 13 decreases, the turning motor 16 is started and the movable table 13 starts turning, and as a result, the taping head H taps the left corner of the stator coil C while turning.
The taping part is indicated by T2). Note that when the taping head H enters the left corner, the motor 30 stops and the taping head H relative to the movable table 13
The linear movement of stops.

The rotation angle of the drive shaft 14a of the reducer 14 is detected by the encoder 41, and as shown by the dashed line in FIG. When it is detected that the movable table 13 is parallel to the movable table 13, the swing motor 16 stops, and the swing of the movable table 13 is stopped. When the movable table 13 rotates, the radius of rotation of the taping head H at the rotation center 0 is set equal to the bending radius R of each corner of the stator coil C. Turn correctly along the corner. As a result, the taping condition of the corner portion becomes good.

When the axis of the ball screw 28 attached to the movable table 13 becomes parallel to the straight part of the stator coil C and the taping of the left corner of the stator coil C is completed, the taping head H is attached to the movable table 13. The motor 7 is activated and the movable table 13 itself moves linearly without moving, thereby taping the linear portion of the stator coil C (the taping portion is indicated by T3). When the encoder 38 detects the rotation speed of the ball screw 5 and reads that the taping head I has reached just in front of the right corner of the stator coil C, the motor 7 is decelerated by 5 to move the movable table 13. At the same time as the speed decreases, the turning motor 16 is restarted and the movable table 13 starts turning. As a result, the taping head H rotates while taping the right corner portion of the stator coil C (the taping portion is indicated by T4). Note that when the taping head H enters a part of the right corner, the motor 7 stops and the linear movement of the movable table 13 itself stops.

By rotating the movable table 13, this movable table 13
The axis of the ball screw 28 attached to the stator coil C
When the turning motor 16 stops and at the same time the motor 30 starts, the taping head H moves relative to the movable table 13, and the taping of the right end of the stator coil C is completed. (The taping portion is indicated by T5).

Furthermore, since the amount of linear movement of the taping head H on the movable table 13, the amount of rotation of the movable table 13, and the amount of linear movement of the movable table 13 itself can all be changed, the size and shape of the stator coil can be changed. If the changes,
By changing the capacitance described above in accordance with the corresponding portion of the stator coil to be taped, it is possible to tap several types of stator coils having different sizes and shapes with one device.

Furthermore, since the taping start point and end point can be easily set by detecting the rotation speed of the ball screw 28 using the encoder 39, the "parallel control" described in the "prior art" section can be performed extremely easily. be able to.

〔Effect of the invention〕

As described above, the automatic taping device according to the present invention adjusts the taping state of each corner of the stator coil by a combination of linear movement of the taping head on the movable table, rotation of the movable table, and linear movement of the movable table itself. This makes it possible to perform stator coil taping with high accuracy and efficiency.

In addition, by changing the amount of linear movement of the taping head on the movable table, the amount of rotation of the movable table, and the amount of linear movement of the movable table itself, each can be changed to correspond to the corresponding part of the stator coil to be taped. difference,
Taping of several types of stator coils with different shapes can be performed with one device.

[Brief explanation of drawings]

1 to 7 are diagrams for explaining the present invention, in which FIG. 1 is a front view of an automatic tebbing device according to the present invention, FIG. 2 is a right side view, and FIG. Figure 3 is an enlarged view of the taping head H portion in Figure 2;
The figure is a plan view of the automatic taping device, and FIG. 5 is a plan view of the automatic taping device for explaining the movement of the movable table 13 and the taping head H when taping the end and corner portions of the stator coil C. , Figure 6 is
FIG. 7, an enlarged view of the corner portion of the stator coil C, is a diagram for explaining taping of each part of the stator coil C. 8 and 9 are diagrams for explaining the prior art, and FIG. 8 is a schematic perspective view of a conventional taping device;
The ninth part is an explanation of the driving part. The explanations of the symbols of the main parts constituting the present invention are as follows. C: Stator coil H: Taping head 0: Center of rotation of the taping head R: Bending radius of the corner of the stator coil S: Center of rotation of the movable table 1: Base 5: Pole screw (first linear movement means) 6: Ball nut (first linear movement means) 7: Motor (first linear movement means)

Claims (1)

[Claims] A movable table is attached to the base so as to be movable in a straight line by a first linear moving means, and to be pivotable about its longitudinal center by a turning means, and a taping head is attached to the movable table. The taping head mounted on the movable table so as to be linearly movable by the second linear moving means is arranged such that the radius of rotation of the taping head is equal to the bending radius of each corner of the stator coil to be taped. The center of rotation of the movable table is determined, and the taping of the stator coil is automatically performed by a combination of linear movement of the taping head on the movable table, rotation of the movable table, and linear movement of the movable table itself. An automatic taping device for stator coils, characterized in that: