JP6745382B1 - End face alignment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an end face aligning device for aligning end faces of a wound body of metal bands rapidly and effectively. SOLUTION: An end face aligning device 90 for aligning the end faces of a great circle winding iron core 52 in which a metal band is wound in a tubular shape is provided with a pressing portion 70 for pressing one end face of the great circle winding iron core 52 in the axial direction. The pressure portion 70 is characterized by having an upper resin plate 72 that is in contact with the one end face of the great circular winding iron core 52. [Selection diagram] Fig. 7

Description

The present invention relates to an end face aligning device that aligns end faces of a wound body formed by winding a metal band in a tubular shape.

2. Description of the Related Art Conventionally, in the manufacture of a transformer, a step of winding a metal band of a winding core into a great circle on a winding frame of a coil and then winding the metal band of the winding core onto the winding frame of the coil is performed.

In Patent Document 1, a pair of rollers whose axial direction is parallel to the axial direction of the winding core, a belt stretched around the pair of rollers, and the belt run in a direction that matches the winding direction of the winding core. And a drive unit for driving the pair of rollers so that the pair of rollers can move in a perspective direction with respect to the winding core, so that the winding core can be rotated by using the belt and the winding core can be appropriately wound. Is disclosed.

Japanese Patent No. 6416346

However, as described above, in the step of winding the metal strip around the winding frame of the coil, due to the difference in centrifugal force received by the metal strip when the winding iron core is rotated, the winding body is midway in the process. There was a problem that the end face of the was uneven. Further, such a problem of unevenness of the end face of the wound body is dealt with manually by an operator, which causes a problem of reduction in productivity.

The present invention has been made in view of such circumstances, and an object thereof is to provide an end face aligning device that can quickly and effectively align the end faces of a wound body of a metal strip. ..

An end face aligning device according to the present invention is an end face aligning device for aligning end faces of a wound body in which a metal band is wound in a tubular shape, including a pressurizing portion for pressing one end face in the axial direction of the wound body, The pressurizing unit has a first resin plate that is in contact with the one end surface of the wound body.

In the present invention, the pressing portion pushes the one end surface of the winding body in a state where the first resin plate is in contact with the one end surface of the winding body in the axial direction of the winding body. Align the end faces.

The end face aligning device according to the present invention includes a support base that supports the other end face of the winding body in the axial direction, and the support base has a second resin plate that is in contact with the other end face of the winding body. Characterize.

In the present invention, the support base supports the other end surface of the wound body in a state where the second resin plate is in contact with the other end surface in the axial direction of the wound body.

The end face aligning device according to the present invention is characterized in that the pressing portion pushes the one end face of the wound body while vibrating.

In the present invention, when pressing the one end surface of the wound body, the pressurizing portion presses the one end surface of the wound body while vibrating.

The end face aligning device according to the present invention is characterized in that the pressing portion strikes the one end face of the wound body.

In the present invention, the pressurizing unit strikes the one end surface of the wound body to align the end surfaces of the wound body.

The end surface aligning device according to the present invention is characterized in that the first resin plate and the second resin plate have a hardness of less than 188 Hv.

In the present invention, the hardness of the first resin plate and the second resin plate is less than 188 Hv, and when the first resin plate or the second resin plate is rubbed, The end surface or the other end surface is prevented from being damaged.

The end surface aligning device according to the present invention is characterized in that the first resin plate and the second resin plate are made of fluororesin, polyimide resin, 6-nylon, polyethylene, polycarbonate, or polyacetal.

In the present invention, the first resin plate and the second resin plate are excellent in wear resistance and slidability like fluororesin, polyimide resin, 6 nylon, polyethylene, polycarbonate, or polyacetal. Made of resin.

According to the present invention, it is possible to provide an end face aligning device that can quickly and effectively align the end faces of a wound body of metal strips.

It is a side view which shows schematically the principal part of the winding device which concerns on this Embodiment. It is a perspective view which shows schematically the principal part of the winding device which concerns on this Embodiment. It is explanatory drawing explaining the winding process in the winding device which concerns on this Embodiment. It is explanatory drawing explaining the winding process in the winding device which concerns on this Embodiment. It is explanatory drawing which shows the state in which the metal band (winding iron core) was wound around the leg after the winding process. FIG. 3B is a side view of the winding device for explaining the position of the pressing unit in the state of FIG. 3A. It is a side view of a winding device explaining the position of a pressurizing part in the state of Drawing 3C.

Hereinafter, a winding device that winds a metal band from a core in which a band-shaped metal band is wound in a tubular shape to a coil bobbin has a facet alignment device according to an embodiment of the present invention as an example, and will be described in detail with reference to the drawings. I will describe.

FIG. 1 is a side view schematically showing a main part of a winding device 100 according to this embodiment. The winding device 100 includes an end face aligning device 90, an inner roller 11 and an outer roller 12 that rotate a cylindrical winding iron core 50 (winding body) described later, and a coil bobbin 55 around which a metal band of the winding iron core 50 is wound. ..

The end face aligning device 90 includes a pressurizing unit 70 that presses an upper end face (one end face) of the wound iron core 50 in the axial direction, an operating mechanism 80 that moves the pressurizing unit 70 in a vertical direction (arrow direction in FIG. 1 ), At least the support base 10 that supports the wound iron core 50 is provided.

The wound core 50 is formed by winding a strip-shaped metal band into a cylindrical shape, and the support 10 supports the lower end surface (the other end surface) of the wound core 50 in the axial direction. In other words, the wound iron core 50 is placed on the support base 10 so that the axial length direction is the vertical direction. The metal strip of the wound core 50 is made of, for example, a silicon steel plate. In the winding device 100 according to the present embodiment, the metal band of the winding iron core 50 is wound around the coil bobbin 55. Hereinafter, such a process is referred to as a winding process.

FIG. 2 is a perspective view schematically showing a main part of the winding device 100 according to the present embodiment. For convenience of description, FIG. 2 shows the pressing unit 70 by a chain double-dashed line, and shows a state in which the wound core 50 is placed on the support 10.

The support base 10 is formed with a through hole 10a penetrating the support base 10 in the thickness direction. The through hole 10a has a slightly larger diameter than the inner roller 11, and the inner roller 11 can move up and down the support base 10 through the through hole 10a. The inner roller 11 and the through hole 10a are arranged coaxially in the vertical direction.

The support 10 has a lower resin plate 10b (second resin plate) in contact with the lower end surface of the wound iron core 50 at the top. The lower resin plate 10b has a flat plate shape and is made of a resin having a hardness lower than that of at least the wound core 50.

Specifically, considering that the hardness (Vickers hardness) of the silicon steel plate is generally 188-204 Hv, the lower resin plate 10b may have a hardness of less than 188 Hv. For example, the hardness of the lower resin plate 10b is preferably 30 Hv to less than 188 Hv.
Thereby, in the winding step, it is possible to prevent the lower end surface of the winding iron core 50 from being worn or broken due to the winding iron core 50 rubbing against the support 10 (lower resin plate 10b).

Further, the lower resin plate 10b is made of a resin having excellent wear resistance and slidability. Specifically, the lower resin plate 10b includes, for example, a fluororesin (for example, polytetrafluoroethylene), a polyimide resin (for example, Sepra (registered trademark)), 6 nylon (for example, MC nylon), or polyethylene (for example, , Ultra high molecular weight polyethylene). More preferably, in terms of cost efficiency, the lower resin plate 10b is made of ultra high molecular weight polyethylene.
The lower resin plate 10b is not limited to this, and may be formed of polycarbonate or polyacetal.

As described above, the inner roller 11 and the outer roller 12 are arranged on the support base 10. The inner roller 11 and the outer roller 12 are substantially parallel to each other, and each has a columnar shape extending in the vertical direction.

The inner roller 11 has a diameter smaller than the inner diameter of the wound iron core 50, and a first rotating shaft 11a that rotates around the axis is arranged at the center of the inner roller 11 in the radial direction. The inner roller 11 contacts the inner wall of the winding core 50 inside the winding core 50 during the winding process. During the winding process, the inner roller 11 and the winding core 50 are coaxially arranged in the vertical direction. That is, the through hole 10a, the first rotating shaft 11a, the inner roller 11 and the wound core 50 are arranged coaxially.

The outer roller 12 has the same diameter as the inner roller 11, and the second rotating shaft 12a that rotates around the axis is arranged at the radial center of the outer roller 12. The outer roller 12 is disposed outside the winding core 50 and contacts the outer wall of the winding core 50 during the winding process. Although not shown, the outer roller 12 is configured to be movable in a direction in which the outer roller 12 approaches and approaches the inner roller 11.

A coil bobbin 55 is provided on the opposite side of the outer roller 12 with the inner roller 11 interposed therebetween. The coil bobbin 55 has a square annular shape and has an opening 56 formed inside. The coil bobbin 55 is erected so that the axial direction is substantially orthogonal to the axial direction of the inner roller 11.
Hereinafter, of the four sides of the coil bobbin 55, the two sides that are substantially parallel to the axial direction of the inner roller 11 (first rotation shaft 11a) are referred to as legs 55a. Of the two legs 55a, the metal strip is wound around the leg 55a located nearer to the inner roller 11. The lower side of the coil bobbin 55 out of the two sides orthogonal to the leg 55 a is housed in the cutout portion provided in the support 10.

When the winding iron core 50 is arranged on the support base 10 during the winding process, the inner roller 11 is located inside the winding iron core 50 and the outer roller 12 and the coil bobbin 55 are outside the winding iron core 50 as described above. To position. In other words, the wound iron core 50 is interposed between the inner roller 11 and the outer roller 12, and the wound iron core 50 is interposed between the inner roller 11 and the coil bobbin 55 (leg 55a).

The end face aligning device 90 is provided above the inner roller 11. The pressing portion 70 of the end face aligning device 90 presses the upper end face of the wound iron core 50 arranged on the support base 10 and aligns the upper end face during the winding process. An operating mechanism 80 is provided above the pressing unit 70, and the operating unit 80 moves the pressing unit 70 in the vertical direction or vibrates. The driving mechanism 80 uses, for example, air pressure.

The pressure unit 70 has a substantially rectangular plate shape, and is composed of two upper and lower plate members. Specifically, the pressurizing section 70 has an upper resin plate 72 (first resin plate) in contact with the upper end surface of the wound iron core 50 in the lower portion, and transmits a force from the operating mechanism 80 to the upper resin plate 72. Are provided on the upper resin plate 72. The medium metal plate 71 and the upper resin plate 72 have the same shape, and both are flat plate shapes. Further, the medium metal plate 71 and the upper resin plate 72 are formed with notches corresponding to the coil bobbins 55 (legs 55a).

Similar to the lower resin plate 10b, the upper resin plate 72 may have a hardness of less than 188Hv, considering that the hardness of the silicon steel plate is 188-204Hv. For example, the hardness of the upper resin plate 72 is preferably 30 Hv to less than 188 Hv. As a result, it is possible to prevent the upper end surface of the wound iron core 50 from being worn or broken due to the wound iron core 50 rubbing against the pressing portion 70 (the upper resin plate 72).

Further, the upper resin plate 72 is made of a resin having excellent wear resistance and slidability. Specifically, the upper resin plate 72 is, for example, a fluororesin (for example, polytetrafluoroethylene), a polyimide resin (for example, Sepra (registered trademark)), 6 nylon (for example, MC nylon), or polyethylene (for example, Ultra high molecular weight polyethylene). More preferably, in terms of cost efficiency, the upper resin plate 72 is made of ultra high molecular weight polyethylene.
The upper resin plate 72 is not limited to this, and may be formed of polycarbonate or polyacetal.

3 and 4 are explanatory views for explaining a winding step in the winding device 100 according to the present embodiment, and FIG. 5 shows a metal band (winding iron core 50) wound around the leg 55a after the winding step. It is explanatory drawing which shows a state. 3 and 4, for convenience of description, a main part of the winding device 100 according to the present embodiment is shown in a plan view, and the pressurizing unit 70 is shown by a chain double-dashed line.

The winding process of the metal band in the winding device 100 is a process of winding the metal band of the winding iron core 50 onto the coil bobbin 55. In other words, in the winding step, the metal strip is wound and the wound iron core 50 is formed again on the coil bobbin 55.

In the winding process of the metal strip, first, the winding iron core 50 is placed on the support 10 so that the winding iron core 50 surrounds the inner roller 11. Next, the outer roller 12 is brought closer to the inner roller 11 side, and the wound iron core 50 is sandwiched between the inner roller 11 and the outer roller 12. Then, the outermost metal strip 51 of the wound iron core 50 is extended, and the end 51a of the outermost metal strip 51 is inserted into the central opening 56 of the coil bobbin 55 (see FIG. 3A).

FIG. 6 is a side view of the winding device 100 for explaining the position of the pressing unit 70 in the state of FIG. 3A.
In the state of FIG. 3A, that is, at the start of the winding process, the pressing unit 70 descends to a position where it is substantially in contact with the upper end surface of the wound core 50. This is because when the winding iron core 50 is rotated as will be described later in the winding step, the centrifugal force applied to the metal strip due to the difference in radius (position) is different, so that This is to prevent the positions of the metal strips in the direction from becoming uneven.

As described above, the upper resin plate 72 in contact with the upper end surface of the wound iron core 50 has a hardness smaller than that of the metal strip, and is excellent in wear resistance and slidability, so that it may be damaged by friction with the metal strip. While suppressing, it is possible to prevent the metal strips from being damaged and prevent the metal strips from being misaligned in the vertical direction.

The lower resin plate 10b of the support base 10 also has hardness lower than that of the metal strip, and is excellent in wear resistance and slidability, so that the metal strip can be prevented from being damaged by friction with the metal strip. It is possible to support the winding core 50, that is, a great circle winding iron core 52 (winding body), which will be described later, during the winding process without causing damage.

Then, the end portion 51a of the outermost metal strip 51 is inserted between the inner roller 11 and the outer roller 12, and the end portion 51a and the inner metal strip of the wound iron core 50 located inside the end portion 51a are Connect with tape 60 (see FIG. 3B). At this time, the outermost metal strip 51 forms a circle having a diameter larger than that of the wound iron core 50 (hereinafter, referred to as a large circle wound iron core 52). Next, by rotating the inner roller 11 in the direction opposite to the winding direction of the winding core 50 and applying a centrifugal force to the metal band of the winding core 50, the metal band is gradually released from the winding core 50, and the metal band is gradually released. Spreads along the large-circle iron core 52. As a result, all of the metal strips forming the wound iron core 50 form the great circle wound iron core 52 (see FIG. 3C).

FIG. 7 is a side view of the winding device 100 for explaining the position of the pressing unit 70 in the state of FIG. 3C.
As described above, when the large-circle iron core 52 of the metal band is formed, the driving mechanism 80 applies a downward force to the pressing unit 70. That is, the operating mechanism 80 biases the pressurizing unit 70 toward the large-circle winding iron core 52 side, and the pressing unit 70 (upper resin plate 72) presses the upper end surface of the large-circle winding iron core 52. At this time, the pressing unit 70 vibrates. That is, the pressing portion 70 vibrates and presses the upper end surface of the great-circle wound iron core 52.

By this, that is, the unevenness of the positions of the metal strips in the vertical direction, that is, the unevenness of the upper end surface and the lower end surface of the great circular winding iron core 52, which occurred in FIG. 3A to FIG. Can be arranged. In the winding device 100 according to the present embodiment, when the pressing portion 70 pushes the upper end surface of the great circle winding iron core 52, the pressing portion 70 vibrates, so that the upper end surface of the large circle winding iron core 52 is more effectively. Also, the lower end face can be aligned.

The winding device 100 according to the present embodiment is not limited to the above description. The pressurizing unit 70 may be configured to press the upper end surface of the great circular winding iron core 52 at regular or irregular intervals. In other words, the pressurizing unit 70 may be configured to hit the upper end surface of the great circular winding iron core 52 at regular or irregular intervals.

Next, the tape removing tool 1 is brought close to the outer peripheral surface of the large-circle winding iron core 52, and the tape 60 is removed from the large-circle winding iron core 52 by the tape removing tool 1 (see FIG. 4D). After removing the tape 60, the first rotating shaft 11a and the inner roller 11 are pulled out from the great circular winding iron core 52 through the through hole 10a of the support 10. At this time, the large circular wound iron core 52 contracts in the radial direction by its elastic restoring force and winds around the leg 55a of the coil bobbin 55. Therefore, the wound iron core 50 is formed on the leg 55a of the coil bobbin 55 (see FIGS. 4E and 5).

In the above, in the winding step, when all of the metal strips of the winding core 50 form the great circle winding core 52 (see FIG. 3C), the pressing portion 70 vibrates and presses the upper end surface of the great circle winding core 52 to make it large. Although it has been described that the upper end surface and the lower end surface of the circular core 52 are aligned, the winding device 100 according to the present embodiment is not limited to this.

For example, when the tape 60 on the outer peripheral surface of the great circular wound iron core 52 is removed (see FIG. 4D) or when the wound iron core 50 is formed on the leg 55a of the coil bobbin 55 (see FIG. 4E), the pressing unit 70 is It may be configured to push the upper end surface of the large-circle iron core 52 while vibrating.

In the winding device 100 according to the present embodiment, since the upper end surface (and the lower end surface) of the winding iron core 50 is aligned by using the end surface aligning device 90 as described above, the worker manually winds the winding iron core 50. The productivity can be improved as compared with the case where the upper end faces of the (great circle wound iron core 52) are aligned.
Further, in the winding device 100 according to the present embodiment, as described above, the pressing portion 70 vibrates and presses the upper end surface of the winding core 50, so that the upper end surface and the lower side of the winding core 50 are more effectively. The end faces can be aligned.

Further, in the winding device 100 according to the present embodiment, as described above, the upper resin plate 72 in contact with the upper end surface of the winding iron core 50 has a hardness smaller than that of the metal strip, and has excellent wear resistance and slidability. Since it is excellent, it prevents damage to the metal strip while suppressing the upper resin plate 72 from being damaged by friction with the metal strip. In addition, centrifugal force quickly spreads from the winding iron core 50 to the large-circle winding iron core 52, and quickly reduces from the large-circle winding iron core 52 to form the winding iron core 50 on the coil bobbin 55. Therefore, productivity is further enhanced.

In the winding device 100 according to the present embodiment, as described above, the lower resin plate 10b in contact with the lower end surface of the winding core 50 also has hardness lower than that of the metal strip, wear resistance and sliding. Since it has excellent properties, it does not damage the metal strip while suppressing the lower resin plate 10b from being damaged by friction with the metal strip. In addition, centrifugal force quickly spreads from the winding iron core 50 to the large-circle winding iron core 52, and quickly reduces from the large-circle winding iron core 52 to form the winding iron core 50 on the coil bobbin 55.

10 Support base 10b Lower resin plate (second resin plate)
50 wound iron core (wound body)
52 Oenmaki iron core (wound body)
70 Pressure Unit 72 Upper Resin Plate (First Resin Plate)
90 end face aligning device 100 winding device

Claims (4)

In an end face aligning device for aligning end faces of a wound body in which a metal band is wound in a tubular shape,
A pressurizing unit for pressing one end surface of the wound body in the axial direction,
The pressing is to have a first resin plate in contact with the end face of the winding body,
The end face aligning device, wherein the pressing unit pushes the one end face of the wound body while vibrating . A support base that supports the other end face of the winding body in the axial direction,
The end surface aligning device according to claim 1, wherein the support base has a second resin plate that is in contact with the other end surface of the wound body. The end face alignment device according to claim 2, wherein the first resin plate and the second resin plate have a hardness of less than 188 Hv. The end face aligning device according to claim 2, wherein the first resin plate and the second resin plate are made of fluororesin, polyimide resin, 6 nylon, polyethylene, polycarbonate, or polyacetal.

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