JPH04189263A - Winding molding method of spherical body - Google Patents

Abstract

PURPOSE:To uniform the fiber strength on a spherical body by feeding and winding a fiber on a core ball by a horizontal rotating port horizontally rotated at a high speed around the core ball by a main shaft, and making the revolution angle satisfy a specified condition. CONSTITUTION:A winding is applied to a core ball 1 to form a spherical body, in which a middle speed rotation is given to the core ball 1 by an upward open-sided shaft 3 within a vertical surface extending through a spherical center 2, and the angle formed by the open-sided shaft 3 to the crossing line between a horizontal surface extending through the spherical center 2 the vertical surface is a revolution angle Q. A low speed revolution is given to the core ball 1 so that the revolution angle Q is changed by 0-90 deg. 1 by a revolution shaft 5. A fiber 8 is fed and wound on the core ball 1 by a horizontal rotating port 7 horizontally rotated at a high speed by a main shaft 6 around the core ball 1 within the horizontal surface, so that the scheme N=k sin A is satisfied, when the integrated number of winding of the fiber 8 is N and the proportional constant is k at the time of increasing the revolution angle Q by 0-A deg.. Thus, the fiber strength on the core ball 1 can be uniformed.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a winding molding method for a spherical body. [Prior Art] In the conventional winding molding method for a spherical body, the fiber density on the core sphere is kept constant. (Refer to Publication No. 41!! Publication No. 1973-, No. 2192)
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[Problem to be solved by the invention]

In the conventional winding molding method of a spherical body, the fiber density on the core sphere could not be made constant, so there was a problem that the strength on the core sphere could not be made uniform.

An object of the present invention is to provide a winding molding method that can solve this problem and make the fiber strength on the core sphere uniform.

[Means to solve the problem]

In order to achieve the above object, in the method of winding a spherical body according to the present invention, a core sphere, which is to be the core of a spherical body, is given medium-speed rotation by a cantilever shaft extending upward in a vertical plane passing through the spherical center, The angle that the cantilever axis makes with the intersection line of the horizontal plane passing through the spherical center and the vertical plane is the revolution angle Q, and the revolution angle Q around the spherical center with respect to the core ball is from near zero to 90 degrees by the revolution axis. The core sphere is rotated at a low speed so as to change, and the core sphere is rotated horizontally at high speed by the main axis in the horizontal plane, and the fiber is sent out and wound around the core sphere, and the revolution angle Q changes from near zero to A'. ! When the cumulative number of turns of the fiber until it increases is iN and the proportionality constant ik, the following relationship is established: Nw - m k 5inA.

[Effect]

The circumferential length on the core sphere 1 corresponding to the revolution angle A, the radius f of the core sphere 1
:r, then 2fr 5inA is 0 Therefore, the fiber density f on this circumference is: f - N/2 It becomes constant.

〔Example〕

The embodiment will be described with reference to all the drawings.A core sphere 1 is widened to form a spherical body.

A cantilever shaft 3 passing through the ball center 2 and pointing upward in a vertical plane gives the core ball 1 medium-speed rotation, for example, 10 to 12 rpm. The cantilever shaft 3 is rotated by a flexible shaft 10 which is rotated by a motor 9.

The angle that the cantilever shaft 3 makes with respect to the intersection m4 between the horizontal plane passing through the spherical center 2 and the vertical plane is defined as the revolution angle Q.

With respect to the core sphere 1, by the revolution axis 5 supporting the cantilever axis 3,
A low speed rotation, for example, 2 rpm, is applied so that the revolution angle Q increases from near zero, for example, 10 degrees to 90 degrees. The revolution axis 5 is given stepping by a stepping motor system 11 .

The fibers 8 are fed and wound onto the core sphere 1 by a horizontal rotating lower which is horizontally rotated at high speed, for example, 6 Orpm, around the core sphere 1 by the main shaft 6 in the horizontal plane. The main shaft 6 is rotated by a motor 9. The fibers 13 impregnated with the resin 12 are passed through the main shaft 6 and sent out as fibers 8 from the horizontal rotating lower. At the revolution angle Q, the fiber 8 is wound within the range of BCDE.

The core sphere 1 is sys-chipped and oscillated by the revolution axis 5.

Due to this rocking, the revolution angle Q performs a revolution cycle. The revolution cycle consists of an increasing half cycle in which the revolution angle Q increases from near zero, for example 10 degrees, and reaches 90 degrees, and a decreasing angle inverse cycle, in which the revolution angle Q reverses from 90 degrees and decreases to near zero. This one revolution cycle is repeated.

A disc-shaped control plate 14f rotates in synchronization with the main shaft 6.

Be prepared. The control plate 14 rotates, for example, in a clockwise manner when viewed from below, and one revolution corresponds to one revolution cycle. On the lower surface of the control board 14, signals are marked along the circumference. The angle symbol of this signal is, for example, as shown in FIG. A sensor 15 for sensing signals is provided, and this sensor 15 is connected to the stepping motor system 11. As the control board 14 rotates, a signal passes through the sensor 15, and the sensor 15 detects the signal and operates the stepping motor system 11, thereby causing the revolution axis 5f to tip. Signal GIO
The stepping motor system 11 is adjusted so that the revolution angle Q becomes 10 degrees when the rotation angle Q passes the sensor 15.

Since the control plate 14 is synchronized with the main shaft 6, the cumulative number of turns of the fiber 8 is proportional to the rotation angle of the control plate 14.

The clockwise rotation of the control board 14 progresses, and the digit # of the signal 20 is set so that the cumulative number of turns becomes ksinjQ degrees until the signal 4-20 passes the sensor 15. When the signal 20 passes through the sensor 15, the signal gives stepping to the system chipping motor system 11, making the revolution angle Q 30[.

Until the signal 30 passes through the sensor 15, the cumulative number of turns is k s i
Set the position of the signal 30 so that n2QliI. When the signal 30 passes through the sensor 15, the stepping motor system 11 steps according to the signal, and the revolution angle Q
is 40 degrees.

As the control plate 14 rotates, the process proceeds in a similar manner.

The cumulative number of turns until the signal F90 passes through the sensor 15 is ksin
The signals F90 and G9 are adjusted so that the cumulative number of turns until the signal G90 passes through all the sensors 15 is ksin90 degrees.
Set the 0 position.

Up to this point, the angle increasing half cycle has ended and the cumulative number of turns is k.

The signal G90 outputs a reversal signal to the sensor 15, and the stepping motor system 11 reverses its stepping, steps to a revolution angle of 80 degrees, starts a decrementing angle half cycle, and newly accumulates the number of turns.

The cumulative number of turns until the signal 80 passes the sensor 15 is k (sin
90 degrees - 5 in 80 degrees), and the signal 80 is the sensor 15
When passing through, it steps to a revolution angle of 70M. signal 70
The cumulative number of turns until it passes the sensor 15 is k (sin90 degrees -
5 inches 70 degrees), and when the sensor 15 signal 70 passes, the revolution angle is stepped to 60 degrees.

In this way, the angle reduction half cycle progresses.

The cumulative number of turns until the signal 20 passes the sensor 15 is k (sin
9Q degrees - 5 in 20 degrees), stepping to a revolution angle of 10 degrees when signal 20 of sensor 15 passes. The cumulative number of turns until the signal F10 passes is k (sin 90 degrees - 5 in 10 degrees), and the cumulative number of turns until the signal G10 passes is k (sin 90 degrees - 5 in
degree).

At this point, the angle reduction half cycle ends. The cumulative number of turns in a half cycle of decreasing angle is k.

When the signal G10 passes, the sensor 15 issues a reversal signal, and the stepping motor system 11 starts rotating forward, and the angle increase half cycle begins again, stepping to a revolution angle of 20 degrees.

In this way, the revolution cycle is repeated and N-ksinQ
winemaking that satisfies the conditions;

In the description above, I explained in 10 degree steps for convenience, but 1
It can be carried out in the same way with a degree step or even a finer step.Since the roving of the fiber 8 is quite thick, by making the step finer, it is the same as changing the revolution angle Q almost continuously. The result is obtained.

In this embodiment, the revolution angle Qt is reversed from 90 degrees, but it is also possible to proceed to 100 degrees without reversing and then reverse in steps of 170 degrees.

In principle, the interlocking between the motor 9, the main shaft 6, the control plate 14, etc. is shown as a gear, but the structure may be any suitable and may not be based on a gear.

Since the x7 topping motor system 11 is well known, its explanation will be omitted.

〔Effect of the invention〕

This method provides a winding molding method in which the fiber density on the spherical body is constant, and therefore has the effect of obtaining a spherical body with uniform strength on the spherical body.

[Brief explanation of the drawing]

FIG. 1 is a front view with a part cut away, and FIG. 2 is a side view. Figure 3 is a bottom view of the control board. In the figure, 1 is the core ball, 2 is the ball center, 3 is the cantilever axis, 4 is the intersection line, 5 is the revolution axis, 6 is the main axis, and 7 is the horizontal rotation port. , 8 is fiber 0

Claims (1)

[Scope of Claims] 1. A core sphere (1) that is to be the core of a spherical body has its center (2
) The cantilever shaft (3) points upward in the vertical plane, giving medium-speed rotation, and the cantilever shaft (3) passes through the center of the ball (2) at the intersection line (4) of the horizontal plane passing through the vertical plane and said vertical plane. ) is the revolution angle Q, and the revolution axis (5) makes the center of the ball (1) the center of the ball (2).
A horizontal rotation port (7) is provided with a low-speed revolution so that the revolution angle Q changes from near zero to 90 degrees, and is caused to rotate at high speed horizontally around the core sphere (1) in the horizontal plane by the main axis (6). ),
The fiber (8) is sent out and wound around the core ball (1) until the revolution angle Q increases from near zero to A.
A winding forming method for a spherical body characterized by having the following relationship: N=ksinA, where the cumulative number of turns is N and the constant of proportionality is k.