JPH04273414A - Method and apparatus for winding formation on inside of cylinder - Google Patents

Abstract

PURPOSE:To execute a winding operation whose accuracy is good by a method wherein, while a strand is being fed to the inner wall of a cylinder and is being pressed and bonded to the inner wall of said cylinder by means of the elasticity of the bent strand, the strand is raised while a strand drum and a bending device are being turned around a support and the strand is piled up. CONSTITUTION:A strand 1 is bent and worked once by using a bender 6; after that, it is taken out from the bender 6 by using a delivery roller 9. The strand which has been taken out from the bender 6 is attached to tips of a plurality of support arms 13a which have been extended from a support drum 16 to its radial direction; it is piled up sequentially by using a coil pressure roller 13 arranged so as to be close to the inner wall of a cylinder 25 by keeping a prescribed gap. The coil pressure roller 13 is constituted of the following: a radial-direction retainer 11 provided with a roller 11a having a function to push a bent coil 26 to the inner wall of the cylinder 25; and an axial-direction retainer 12 provided with a roller 12a having a function to restrain the jump of the coil 26 from its upper part.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for winding a cylindrical inner coil used in a superconducting coil used in a particle accelerator.

0002

[Prior art] In the conventional method of winding the cylindrical inner coil of a superconducting coil, an example of using an automatic winding machine is to bend the wires at the top of the cylinder while sequentially dropping them into the cylinder and stacking them up. Edgewise winding method, or inner winding in which the wire is temporarily wound around the winding frame in advance, the winding frame is inserted into the outer cylinder, and then the wire is unwound from the winding frame and wound around the inside of the cylinder. There were line methods, etc.

0003

[Problems to be Solved by the Invention] However, in the conventional edgewise winding method, the main body of the wire bending device is located outside the cylinder, which increases the size of the entire winding device, which requires space for installing the cylinder. This required extra space for the bending equipment. In addition, a certain amount of clearance is required to drop the bent wire into the cylinder from the top, which results in poor dimensional accuracy of the coil.
In addition, a step of pressing the coil upward or in the radial direction of the cylinder was required.

Furthermore, in the inside winding method, the wire is temporarily wound around a winding frame smaller than the size of the inside of the cylinder, and then the wire is wound back to the size of the inside of the cylinder to match the size. Therefore, it is extremely difficult to achieve dimensional accuracy of the coil due to spring back and plastic deformation, and
There were large errors in both the height and radial direction of the coil after it was wound inside the cylinder, and a process of pressing the coil was required.

[0005] In all of these conventional wire winding methods, it is extremely difficult to expect sufficient dimensional accuracy for the inner surface of the cylinder, and the required dimensional accuracy cannot be obtained, and a process of pressing the coil is required. It is said that

The present invention has been made to solve the above-mentioned problems, and provides a cylindrical inner winding forming method that does not require a step of pressing the coil and can perform winding with high precision, and the same. The purpose is to provide equipment.

[0007]

[Means for Solving the Problems and Effects] The present invention provides for drawing out strands from a strand drum that is rotatably and movably supported by a column erected in the center of a cylinder, and rotating the strands with respect to the column. The wire drawn out by the bending device, which is supported in a vertically movable manner, is bent into a curvature greater than that of the cylinder, and the bent wire is subjected to a predetermined downward pressure in the axial direction of the wire drum. While supplying the strands to the inner wall of the cylinder while applying pressure, the elasticity of the bent strands causes the strands to be crimped against the inner wall of the cylinder, while the strand drum and bending device are raised while rotating around the support to stack the strands. The present invention relates to a cylindrical inner winding forming method and an apparatus for forming a coil.

[0008]

Embodiments An embodiment of the cylindrical inner winding forming method and apparatus of the present invention will be described with reference to FIGS. 1 to 3.

As shown in FIGS. 1 to 3, the device for winding a wire around the inner surface of a cylinder allows a support drum 16 and an elevating guide 17, which constitute a double concentric cylinder, to be raised and lowered and rotated around an upright column 18. It was freely supported. This support drum 16 has a strand drum 2 on which the strand 1 is wound and a brake (not shown) for its support part in the upper part, and an inner strand bending machine that constitutes a bending device for the strand 1. A bender 6 consisting of a roller 4, an outer strand bending roller 5' and a bender section 10, a guide roller 7 located before and after the bender 6, a guide roller 3, and a feed-out roller 9 rotated by a feed-out motor 14 are mounted on a support drum 16. radially spaced apart from and circumferentially extending from a lower portion thereof. Further, the axis of the strand drum 2 is arranged parallel to the support drum 16 and the support column 18.

The support drum 16 is supported concentrically with respect to the lifting guide 17, and includes a rotating gear mechanism 23 provided on the lifting guide 17 side, a rotating motor 21 provided on the supporting drum 16 side, and a rotating gear mechanism 23 provided on the lifting guide 17 side. The elevating guide 17 and the support column 1 are
It is now possible to rotate 360 degrees around 8. The elevating guide 17 is installed so as not to rotate relative to the support column 18, and is movable up and down by a chain 24 connected to the elevating guide 17, a chain gear 27 meshing with the chain gear 27, and an elevating motor 19.

That is, the elevating section of the elevating guide 17 is operated by an electric motor 19 attached to a column 18, a speed reducer 20 thereof,
It consists of a chain 24 connected to the lifting guide 17 via the inside and outside of the support column 18, and a chain gear 27 that meshes with the chain 24. Each time these rotating parts rotate once, the lifting guide 17 is raised by a predetermined amount corresponding to the thickness of the strand 1. Furthermore, pillar 1
8 is arranged perpendicularly to the center of the cylinder 25, and the column 18 and the cylinder 25 are fixed to each other by a support frame (not shown).

[0012] Instead of providing the chain 24, the support drum 16 and the elevating guide 17 can also be raised via a coil presser roller 13 consisting of a radial presser roller 11 and an axial presser roller 12. In this case, the weight of the entire internal device acts as a force pressing down on the coil 26.

In order to wind a coil using the cylindrical inner winding device of the present invention constructed as described above, first, the strand 1 wound around the strand drum 2 passes through the guide roller 3 and is placed in a bender. sent to 6. At this time, depending on the size of the drum 2, in addition to the guide roller 3, it is necessary to provide a guide roller 7 immediately before the guide roller 3. At this time, it is desirable to brake the strand drum 2 with a separately provided brake (not shown) so that it does not unravel too much due to the tensile force of the guide roller 3.

[0014] Then, the wire 1 is
Curved to form a dimensional curve. That is, as shown in FIGS. 4(a) and 4(b), the bender 6 of the winding device of the present invention has a plurality of wire bending machines rotating in the same direction (feeding direction) in the path of the wire 1. Rollers 4 and 5 are provided, and the strand 1
It is designed to be inserted from both sides. That is, two of the three outer strand bending rollers 5 on both sides are shown in FIG.
As shown in (b), the strand 1 can be curved into a quadratic curve having a desired curvature simply by moving and adjusting in the direction of the arrow. Note that the center bending roller 5 of the bending rollers 5
is adjusted to fit the quadratic curve. Basically, if there is one inner wire bending roller 4 and two outer wire bending rollers 5, the wire 1 can be bent into a quadratic curve having a predetermined curvature. The curvature of the wire 1 created by this bender 6 is made larger than the curvature of the inner wall of the cylinder 25, and after passing through the bender 6, the wire 1 is crimped to the inner wall of the cylinder 25 by itself within the range of elastic deformation. be accommodated.

After the wire 1 is bent only once by the bender 6, it is taken out from the bender 6 by a delivery roller 9. The strands 1 taken out from the bender 6 are attached to the tips of a plurality of support arms 13a extending in the radial direction from the support drum 16, as shown in FIGS. 2 and 3.
The coil pressing rollers 13 are arranged close to the inner wall of the cylinder 25 with a predetermined gap, and the coils are successively stacked as shown in FIGS. 1 and 3. As shown in FIG. 5, the coil pressing roller 13 is a roller 11 that has the function of pressing the bent coil 26 against the inner wall of the cylinder 25.
It is composed of a radial presser 11 having a diameter of 1.a and an axial presser 12 having a roller 12a which functions to suppress the springing up of the coil 26 from above. The axes of roller 11a and roller 12a are arranged perpendicular to each other. Further, the coil pressing roller 13 is configured such that no force that would deform the wire 1 is applied thereto.

Further, the rotation and lifting of the support drum 16 are performed in synchronization with the amount of feed of the wire 1 from the bender section 6. The rotating part of the support drum 16 is
It consists of a double cylinder consisting of an elevating guide 17 and a support drum 16, and the rotation of the electric motor 21 is controlled by the elevating guide 1 by an electric motor 21 attached to the supporting drum 16 and a gear 22 with a speed reducer.
The signal is transmitted to a rotating gear mechanism 23 provided on the outer periphery of 7. This causes the rotating part to rise each time it rotates once.

FIGS. 6 and 7 show another embodiment of the cylindrical inner winding forming method and apparatus of the present invention. 6 is a perspective view of a winding device according to another embodiment of the present invention, and FIG. 7 is a side view of the winding device of FIG. 6 in which the guide rollers and guide rollers are omitted. The only difference from the embodiments shown in FIGS. 1 to 3 is that the axis of the winding drum 2 on which the wire 1 is wound is inclined at a predetermined angle with respect to the axis of the support 18, and other configurations are not included. are the same.

By adopting such a configuration, the strand 1
It becomes extremely easy to unwind the wire from the wire drum 1.

[0019]

[Effects of the Invention] According to the winding method and device of the present invention,
The strands are bent to the desired curvature using a bender under constant tension, and are wound sequentially around the inner surface of the cylinder, creating a cylindrical inner coil with very little error in the height and radial directions of the coil. It becomes possible to form.

Further, according to the winding method and device of the present invention, it is possible to wind the strands as described above, and the work can be performed inside a cylinder, so it is faster than conventional winding devices. Therefore, the device can be configured to be extremely compact, and the winding work is also extremely simplified.

The winding method and device of the present invention can be applied to other circular coils such as superconducting toroidal coils for nuclear fusion cores and short saddle-shaped coils by finely controlling the rotation system and lifting system of the support drum. It can also be applied to the production of etc.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of a winding device used in the winding method of the present invention, showing a state in which a wire is wound around the inner surface of a cylinder.

FIG. 2 is a partial sectional view taken along the line II-II in FIG. 1 showing details of the bender portion.

FIG. 3 is a side view of the winding device of FIG. 1 with the guide rollers and guide rollers omitted;

FIG. 4 is an explanatory diagram of the wire bending method of the present invention.

FIG. 5 is an enlarged perspective view of the coil pressing roller.

FIG. 6 is a perspective view of another embodiment of the winding device of the present invention.

[Figure 7
] A side view of the winding device of FIG. 6 with the guide roller and the guide roller omitted.

[Explanation of symbols]

1 Element wire 2. Bare wire drum 3 Guide roller 4 Inner wire bending roller 5 Outer wire bending roller 6 Vendor 7 Guide roller 9. Feeding roller 10 Vendor Department 11 Radial presser 12 Axial presser 13 Coil holder 14　Feeding motor 16 Support drum 17 Lifting guide 18 Post 19 Lifting motor 20　Elevating decelerator 21 Rotation motor 22 Rotation reducer 23 Rotating gear mechanism 24 Chain 25 Cylinder 26 Coil 27 Chain gear

Claims (2)

[Claims] [Claim 1] A bending device that draws out strands from a strand drum that is rotatably and movably supported by a pillar installed in the center of a cylinder, and that is rotatably and movably supported by the pillar. The drawn wire is bent into a curvature larger than that of the cylinder, and the wire is bent into the cylinder while applying a predetermined pressure downward in the axial direction of the wire drum. A coil is formed by stacking the wires by raising the wire drum and bending device while rotating around the support column while the wires are being bent and pressed against the inner wall of the cylinder due to their elasticity. A cylindrical inner winding forming method characterized by: 2. A strand drum around which a strand of wire is rotatably and movably supported on a column erected in the center of a cylinder, and a strand drum that is rotatably and movably supported with respect to the column. A cylindrical inner winding forming device comprising a bending device that bends a strand drawn from the strand into a curvature larger than the curvature of the cylinder.