JPS5189413

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DESCRIPTION JPS5189413
Agent Saka Speaker's diaphragm paper making apparatus 2, inventor Osaka Saka 7 Neyaga Nishi
Nishi eyes Address, Osaka Prefecture Neyagawa City Nisshincho 2 No. 1 3, patent applicant
Osaka 7 Neyaga Nishi Nitsu Shincho, place? -572 Osaka Prefecture Hibiyakawa City Nisshincho
2-1 Name (0273 Onkyo Co., Ltd. Representative Director Takeshi Goshiro 4, Agent Onkyo Co.,
Ltd. "[Phase] Japan Patent Office ■ JPA 51-894130 published Japan Japan 51. (1976) 8.5
Japanese Patent Application No. 50- / 4561 Application No. 64-6555 Specification 1 Title of the
Invention
Speaker diaphragm manufacturing device
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the improvement
of a paper making apparatus for a speaker-moving plate. In general, the diaphragm (cone sheet)
of a cone type speaker is required to have physical properties such as rigidity or large viewed
from the driving point, compliance on the outer peripheral portion, large, and light weight. As the
shape of the diaphragm satisfying the above-mentioned physical properties-quality, the central
part of cone paper is thickened, or the fiber density is made large to give rigidity, and as it gets
closer to the outer peripheral part it becomes thinner gradually or the fiber density is made
smaller. It was thought that the shape to make compliance large. In the diaphragm having such a
shape, the cross-sectional thickness or the central portion is thickened and becomes thinner
toward the outer periphery, so that it is lightweight at a ratio where the rigidity viewed from the
driving point is large. Because the compliance of the outer peripheral part is large, mechanical
impedance manding with the edge part acting as a vibrational energy absorber is good, and as a
result, it is lightweight and can be used as Hyphen Bryans. □ ') The acoustic characteristics of
the speaker using the above-mentioned diaphragm (1) The weight reduction of the whole
vibration system is measured, and the sound transmission efficiency is improved. (2) By using the
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hyphen Bryant edge, it is possible to lower the lowest limit frequency (fo) and reproduce the bass
without difficulty. (3) The generation of standing waves is small, so high frequency peaks and
dips due to divided vibration can be suppressed, transient characteristics are good, and nonlinear distortion can be suppressed. EndPage: 1 straight and clear It is possible to play middle to
high tone. , Etc. have excellent advantages. It is difficult, and there is no such a papermaking
apparatus for supplying flowers, and any apparatus similar to that, for example, is Japanese
Patent Publication No. 26-1134 (Patent No. 180755) or Japanese Patent Publication No. 25-449.
The boundary between the thickness of the cone paper or the steps can be clearly identified to
suppress the occurrence of standing waves, and the above-mentioned excellent effects can not be
obtained. The papermaking apparatus of the present invention is an apparatus capable of
papermaking by continuously changing the thickness of corn paper, unlike the papermaking
apparatus of the prior art. The paper making apparatus of the present invention will be described
with reference to FIG. 1. The paper making apparatus of the present invention has a tank 4
having a nozzle 6 at its lower end with slits 1 or small holes 2 and There is a denier 5 arranged
parallel to each other, a drive 6 for rotating the denier 5 with respect to its center, and a diluted
raw material valve 6 for reducing the pressure inside the denier, at the lower end of the tank It
drains naturally from the nozzle 6 by gravity.
The inclined surface of the web 5 is disposed parallel to the nozzle 3 surface with a minute gap,
and the mixed solution drained from the nozzle opening 1 falls vertically to the inclined surface
of the web 5. The inside of the net 5 is constantly depressurized by a pressure reducing device
(not shown), and the mixed water dropped on the slope is sucked and deposited on the net 5 as
the raw material valve and the remaining? Turbid water is drained through the inside of the
rotating shaft 8. The papermaking net is rotated at a relatively slow speed about a rotating shaft
8 by a drive source 6 such as a motor and a transmission device 9 such as a belt, and
papermaking is sequentially performed in the rotational direction. When the material valve is
deposited to the required thickness, the rotation is stopped, the web 5 is removed and the paper
making is completed. The shape of the nozzle is shown in Figs. 3'-1, c, d. B Figs. 3-a and b have
slit-like openings, and Fig. 6-the width of the slit changes continuously. Because of this, when
papermaking is performed using this nozzle, the thickness of the cone paper can be thicker
toward the central portion and closer to the outer periphery. It is also possible to change the
thickness in the circumferential direction and control the discharge by temporally controlling the
discharge amount from the nozzle. Further, FIGS. 3c and 3d are nozzles having an opening in
which a large number of small holes are arranged, and the nozzle of FIG. 3d can obtain the same
effect as the nozzle of FIG. 3b. As described above, according to the apparatus of the present
invention, the amount of deposition of the raw material valve can be freely adjusted along the
axial direction of the net, so that the required portion in the radial direction of the cone paper is
formed into a required thickness. It has many practical advantages such as being able to change
its thickness and changing its thickness continuously.
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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a papermaking
apparatus according to the present invention, FIG. 2 is a sectional view of the same, and 3-a, b, c
and d are shapes of slits. 1 is a slit, 2 is a small hole, 3 is a nozzle, 4 is a papermaking chunk, 5 is
a paper mesh, and 6 is a driving device. EndPage: 26, other than the above invention invention
two-character agent removal (1) invention well two-character deletion address WV Takeshima
f17 along 741 Sakai City No. 1 Onkyo Co., Ltd. Name a, 7 o'clock. Taira 1) EndPage: ３
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