JPH0448037B2 - - Google Patents
Info
- Publication number
- JPH0448037B2 JPH0448037B2 JP11179983A JP11179983A JPH0448037B2 JP H0448037 B2 JPH0448037 B2 JP H0448037B2 JP 11179983 A JP11179983 A JP 11179983A JP 11179983 A JP11179983 A JP 11179983A JP H0448037 B2 JPH0448037 B2 JP H0448037B2
- Authority
- JP
- Japan
- Prior art keywords
- hydrophone
- cable
- manufacturing
- main body
- thermoplastic resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 9
- 229920005992 thermoplastic resin Polymers 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 claims description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 2
- 230000004927 fusion Effects 0.000 claims description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 description 9
- 238000000465 moulding Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 239000012778 molding material Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
【発明の詳細な説明】
（技術分野）
本発明はハイドロホンの製造方法に関するもの
で、特に高水密被覆体を有するハイドロホンの製
造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a method for manufacturing a hydrophone, and particularly to a method for manufacturing a hydrophone having a highly watertight covering.
（従来技術）
従来、水中音響探信機に用いられるハイドロホ
ンは高水圧等によつてその機能を損うことのない
水密構造とするため、ハイドロホン本体ならびに
該本体から導出されるケーブルの外周に注型によ
つて被覆体が形成されていた。この成形法におい
ては、成形材料としてハイドロホン本体には音響
性能上ウレタン等の熱硬化性樹脂が用いられ、ケ
ーブルの被覆材には同種のポリウレタン材が用い
られていた。しかしながらこのような成形法では
成形作業あるいは成形材の硬化に長時間を要する
ため生産能率が極めて悪くかつ不連続作業とな
り、生産の自動化への障害となつていた。またケ
ーブル被覆材と成形材との接着性が悪く水密の点
でも信頼性に乏しい等種々の問題を有していた。(Prior art) Conventionally, hydrophones used in underwater acoustic detectors have a watertight structure that does not impair their functionality due to high water pressure, etc., so that the outer periphery of the hydrophone body and the cable led out from the body are A coating was formed by casting. In this molding method, a thermosetting resin such as urethane is used as a molding material for the hydrophone body in terms of acoustic performance, and the same type of polyurethane material is used for the cable sheathing material. However, such a molding method requires a long time for the molding operation or the curing of the molding material, resulting in extremely poor production efficiency and discontinuous operation, which has been an obstacle to automation of production. Furthermore, there were various problems such as poor adhesion between the cable sheathing material and the molding material, and poor reliability in terms of watertightness.
（発明の目的）
本発明はこれらの問題点を解決するために、音
響特性のよい熱可塑性樹脂を成形材料に用い射出
成形を行なうことにより、生産性がよく水密性に
優れかつケーブル導出部での屈曲障害の少ない高
水密性ハイドロホンの新規な製造方法を提供する
ことを目的とするものである。(Purpose of the Invention) In order to solve these problems, the present invention uses a thermoplastic resin with good acoustic properties as a molding material and performs injection molding. The object of the present invention is to provide a new method for producing a highly watertight hydrophone with less bending trouble.
（発明の構成）
熱可塑性樹脂の射出成形により、ハイドロホン
本体と該本体から導出されたケーブルをセツトし
た金型の空洞部の間隙に該樹脂を充填してハイド
ロホン本体とケーブル導出部外周に被覆体を形成
するようにしたハイドロホンの製造方法である。(Structure of the Invention) By injection molding a thermoplastic resin, the resin is filled into the gap in the cavity of a mold in which the hydrophone main body and the cable led out from the main body are set, and the resin is applied to the outer periphery of the hydrophone main body and the cable lead-out part. This is a method for manufacturing a hydrophone in which a covering is formed.
（実施例）
第１図は本発明の実施により得られたハイドロ
ホンを示す一部切断側面図、第２図はケーブル導
出部の拡大図、第３図は本発明の実施の要部を示
す射出成形の型部分の一部切断説明図である。第
１図において１は振動体保持材、２は振動体、３
は振動体２から導出されたケーブル、４はケーブ
ル導出部、５は被覆体、６はケーブル３の引き出
し部である。ケーブル３の被覆材および被覆体５
は、ポリエチレン等の熱可塑性樹脂よりなり融着
性のよい音響特性，電気的特性に優れたものを被
覆体として射出成形により形成したものである。
第２図に示すようにケーブル導出部の形状はテー
パー形となつている。第３図において、射出を行
なう射出成形機は公知のものが用いられている
が、射出成形機の全体の構成は省略し、本発明の
実施の要部を示す型の部分が一部切断して図示さ
れている。図において７は図示してないプランジ
ヤー，スクリユー，加熱ヒーター等を内蔵してい
るシリンダー、８はシリンダ７のノズル、８−１
はノズル８の射出孔、９は上部金型、１０は固定
板、上部金型９は固定板１０に取りつけられてい
る。１１は下部金型、１２は移動板、下部金型１
１は移動板１２に取りつけられている。１３は移
動板１２の駆動体である。１４は上部金型９と下
部金型１１と振動体保持材１と振動体２とケーブ
ル３により形成された空洞部を示す。射出成形に
際しては、先に下部金型１１の空洞部１４−１に
振動体保持材１およびケーブル３が半田で固定さ
れている振動体２（以下ハイドロホン本体とい
う）をセツトする。次に下部金型１１を移動させ
て上部金型９の下面に重ね合せて型締めし空洞部
１４−２とともに空洞部１４を形成する。次にシ
リンダ７を移動して射出孔８−１を上部金型９の
射入孔９−１に合致させ、溶融状態の熱可塑性樹
脂、例えばウレタン，ポリエチレン，エチレン酢
酸ビニール系樹脂を射出することにより空洞部１
４にセツトしたハイドロホン本体とケーブル導出
部４の外周に熱可塑性樹脂を融着成形せしめて被
覆体５を形成する。この場合シリンダー７の温度
は180〜240℃、射出圧力は50〜150Kg／cm2とし、
１サイクル約60秒で成形することができる。(Example) Fig. 1 is a partially cutaway side view showing a hydrophone obtained by implementing the present invention, Fig. 2 is an enlarged view of the cable lead-out part, and Fig. 3 is a main part of implementing the present invention. It is a partially cutaway explanatory view of a mold part for injection molding. In Fig. 1, 1 is a vibrating body holding material, 2 is a vibrating body, and 3
4 is a cable led out from the vibrating body 2, 4 is a cable lead-out part, 5 is a covering body, and 6 is a lead-out part of the cable 3. Cable 3 sheathing material and sheathing body 5
The cover is made of a thermoplastic resin such as polyethylene, which has good fusion properties and excellent acoustic and electrical properties, and is formed by injection molding.
As shown in FIG. 2, the cable lead-out portion has a tapered shape. In Fig. 3, a publicly known injection molding machine is used to carry out the injection, but the entire structure of the injection molding machine is omitted, and a portion of the mold showing the main part of the present invention is partially cut away. It is illustrated. In the figure, 7 is a cylinder containing a plunger, screw, heater, etc. (not shown), 8 is a nozzle of cylinder 7, and 8-1
is an injection hole of a nozzle 8, 9 is an upper mold, 10 is a fixed plate, and the upper mold 9 is attached to the fixed plate 10. 11 is a lower mold, 12 is a moving plate, lower mold 1
1 is attached to a moving plate 12. 13 is a driving body for the moving plate 12. Reference numeral 14 indicates a cavity formed by the upper mold 9, the lower mold 11, the vibrating body holder 1, the vibrating body 2, and the cable 3. In injection molding, first the vibrating body 2 (hereinafter referred to as the hydrophone body) to which the vibrating body holder 1 and the cable 3 are fixed by soldering is set in the cavity 14-1 of the lower mold 11. Next, the lower mold 11 is moved and placed on the lower surface of the upper mold 9 and clamped to form the cavity 14 together with the cavity 14-2. Next, move the cylinder 7 to align the injection hole 8-1 with the injection hole 9-1 of the upper mold 9, and inject the molten thermoplastic resin, such as urethane, polyethylene, or ethylene vinyl acetate resin. Hollow part 1
A thermoplastic resin is fused and molded around the outer periphery of the hydrophone main body set at 4 and the cable lead-out portion 4 to form a covering 5. In this case, the temperature of the cylinder 7 is 180~240℃, the injection pressure is 50~150Kg/ cm2 ,
One cycle can be molded in about 60 seconds.
（発明の効果）
以上説明したように本発明の実施に係る高水密
性のハイドロホンの製造方法は射出成形によるも
のであるから、短時間にしかも連続して成形する
ことができる。しかして量産化も容易であり従来
に比して生産能率を著しく向上させることがで
き、また従来の不連続成形から連続成形となり自
動化が容易であること、ケーブル被覆材として成
形材と融着性のよい熱可塑性樹脂が用いられるの
でその間の接着性が極めてよくなると共にケーブ
ル導出部にテーパー構造を持たせたことにより水
密性かつケーブル屈曲性の点で信頼性の向上を図
かることはもちろん、音響特性，電気特性の点で
も優れた高水密性ハイドロホンを得ることができ
る製造方法であるという効果がある。(Effects of the Invention) As explained above, since the method for manufacturing a highly watertight hydrophone according to the present invention is based on injection molding, molding can be performed continuously in a short period of time. Therefore, mass production is easy and production efficiency can be significantly improved compared to conventional methods.In addition, conventional discontinuous molding can be changed to continuous molding, making automation easy. Since a thermoplastic resin with good properties is used, the adhesion between them is extremely good, and the tapered structure of the cable lead-out part not only improves reliability in terms of watertightness and cable flexibility, but also improves acoustics. This manufacturing method has the advantage of producing a highly watertight hydrophone with excellent properties and electrical properties.
第１図は本発明の実施により得られたハイドロ
ホンの一部切断側面図。第２図はケーブル導出部
の拡大図。第３図は本発明の実施の要部を示す射
出成形の型部分の一部切断説明図である。
１：振動体保持材、２：振動体、３：ケーブ
ル、４：ケーブル導出部、５：被覆体、６：ケー
ブル引出部、７：シリンダー、８：ノズル、９：
上部金型、１０：固定板、１１：下部金型、１
２：移動板、１３：駆動体、１４：空洞部。
FIG. 1 is a partially cutaway side view of a hydrophone obtained by implementing the present invention. Figure 2 is an enlarged view of the cable lead-out section. FIG. 3 is a partially cutaway explanatory view of an injection molding die showing the main part of the embodiment of the present invention. 1: Vibrating body holding material, 2: Vibrating body, 3: Cable, 4: Cable lead-out part, 5: Covering body, 6: Cable lead-out part, 7: Cylinder, 8: Nozzle, 9:
Upper mold, 10: Fixed plate, 11: Lower mold, 1
2: moving plate, 13: driver, 14: cavity.
Claims (1)
導出されたケーブルとを金型内の空洞部に所要の
間〓を有する様にセツトし、該間〓内に音響性能
および電気性能に優れかつ、ケーブル被覆材と融
着性のよい熱可塑性樹脂を射出し充填することに
よりハイドロホン本体およびケーブル導出部の外
周に被覆体を形成せしめることを特徴とする高水
密性ハイドロホンの製造方法。 ２ ケーブル導出部にテーパー構造の被覆体を形
成したことを特徴とする特許請求の範囲第１項記
載の高水密性ハイドロホンの製造方法。 ３ 熱可塑性樹脂としてウレタン，ポリエチレン
もしくはエチレン酢酸ビニール系樹脂を射出し充
填することを特徴とする特許請求の範囲第１項記
載の高水密ハイドロホンの製造方法。[Scope of Claims] 1. A hydrophone main body and a cable led out from the hydrophone main body are set in a cavity in a mold with a required distance between them, and acoustic performance and electrical performance are maintained within the space. Manufacturing a highly watertight hydrophone characterized by forming a coating around the hydrophone main body and the cable lead-out part by injection-filling a thermoplastic resin that is excellent in water resistance and has good fusion properties with the cable coating material. Method. 2. The method for manufacturing a highly watertight hydrophone according to claim 1, wherein a tapered covering is formed on the cable lead-out portion. 3. A method for manufacturing a highly watertight hydrophone according to claim 1, characterized in that urethane, polyethylene, or ethylene vinyl acetate resin is injected and filled as the thermoplastic resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11179983A JPS604400A (en) | 1983-06-23 | 1983-06-23 | Manufacture of highly watertight hydrophone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11179983A JPS604400A (en) | 1983-06-23 | 1983-06-23 | Manufacture of highly watertight hydrophone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS604400A JPS604400A (en) | 1985-01-10 |
| JPH0448037B2 true JPH0448037B2 (en) | 1992-08-05 |
Family
ID=14570443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11179983A Granted JPS604400A (en) | 1983-06-23 | 1983-06-23 | Manufacture of highly watertight hydrophone |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS604400A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6384584U (en) * | 1986-11-25 | 1988-06-02 | ||
| JP5546978B2 (en) * | 2010-07-16 | 2014-07-09 | Ｎｅｃトーキン株式会社 | Underwater transducer and method for manufacturing the same |
-
1983
- 1983-06-23 JP JP11179983A patent/JPS604400A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS604400A (en) | 1985-01-10 |
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