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JPH0669722B2 - Method for manufacturing tire tube - Google Patents

Method for manufacturing tire tube

Info

Publication number
JPH0669722B2
JPH0669722B2 JP61103367A JP10336786A JPH0669722B2 JP H0669722 B2 JPH0669722 B2 JP H0669722B2 JP 61103367 A JP61103367 A JP 61103367A JP 10336786 A JP10336786 A JP 10336786A JP H0669722 B2 JPH0669722 B2 JP H0669722B2
Authority
JP
Japan
Prior art keywords
tube
separator
tube body
valve
heat
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 - Lifetime
Application number
JP61103367A
Other languages
Japanese (ja)
Other versions
JPS62257830A (en
Inventor
基司 大西
真一 村上
Original Assignee
ナシヨナルタイヤ株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ナシヨナルタイヤ株式会社 filed Critical ナシヨナルタイヤ株式会社
Priority to JP61103367A priority Critical patent/JPH0669722B2/en
Publication of JPS62257830A publication Critical patent/JPS62257830A/en
Publication of JPH0669722B2 publication Critical patent/JPH0669722B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/63—Internally supporting the article during joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/24—Endless tubes, e.g. inner tubes for pneumatic tyres
    • B29L2023/245—Inner tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、タイヤ用チューブ、特に自転車タイヤ用のチ
ューブ本体へバルブを溶着する方法に関するもので、熱
可塑性樹脂からなるチューブの工業的製造を可能にする
ものである。Description: FIELD OF THE INVENTION The present invention relates to a method for welding a valve to a tube for a tire, particularly a tube body for a bicycle tire, and enables industrial production of a tube made of a thermoplastic resin. To do.

従来の技術 自転車タイヤ用チューブは、チューブ本体へバルブを接
着し、チューブ本体の両側をジョイント接合しただけ
の、単純な構成である。バルブは第４図に示すように、
弁構造を有した金属からなるバルブ本体１と、チューブ
本体と同じ材質からなるバルブベース２から構成された
一部品である。チューブ製造に際し、チューブ本体とバ
ルブベースの接着をもって、チューブ本体とバルブ本体
を一体化させることにより、空気保持・内圧調整という
機能をチューブにもたせている。2. Description of the Related Art A bicycle tire tube has a simple structure in which a valve is bonded to a tube body and both sides of the tube body are joint-joined. As shown in Fig. 4, the valve is
It is one component composed of a valve body 1 made of a metal having a valve structure and a valve base 2 made of the same material as the tube body. When manufacturing a tube, the tube body and valve base are bonded together, and the tube body and valve body are integrated, giving the tube the functions of air retention and internal pressure adjustment.

チューブ本体の材質は、一般に天然系あるいは合成系の
ゴムも用いられているが、熱可塑性樹脂の進歩により、
チューブにより適当な材質が特公昭56−39805号公報に
おいて報告され、今後新たな材質が見いだされる可能性
も大きい。しかし、熱可塑性樹脂からなるチューブを実
用化した例は、未だ見当たらない。チューブ本体とバル
ブベースの接着方法は、熱可塑性樹脂からなるチューブ
の場合、接着剤による接着方法と、高周波・超音波によ
る熱溶着方法が考えられるが、以下に示す欠点により工
業的製造を阻む大きな理由の一つであった。Generally, natural or synthetic rubber is used for the material of the tube body, but due to the progress of thermoplastic resins,
A suitable material for the tube was reported in Japanese Examined Patent Publication No. 56-39805, and there is a high possibility that new materials will be found in the future. However, an example of practical application of a tube made of a thermoplastic resin has not been found yet. In the case of a tube made of a thermoplastic resin, the method of bonding the tube body and the valve base may be a method of bonding with an adhesive or a method of heat welding with high frequency / ultrasonic waves. That was one of the reasons.

発明が解決しようとする問題点 接着剤による接着方法は、有機溶剤を使用するため非常
に有害な作業環境となり、かつ乾燥時間や接着剤の有効
時間などの作業時間的に非常な不便さを有している。Problems to be Solved by the Invention The bonding method using an adhesive has a very harmful working environment because it uses an organic solvent, and has a great inconvenience in working time such as drying time and effective time of the adhesive. is doing.

一方、高周波または超音波による一般的な熱溶着方法で
は、目的とするチューブ本体の上部とバルブベースの溶
着だけでなく、同時にチューブ本体の上部と下部までも
溶着し、チューブの中がふさがってしまう。そして、こ
の問題を解決し、かつ、適切な作業内容と時間で行なう
ことのできる方法も見当たらなかった。On the other hand, in a general heat welding method using high frequency or ultrasonic waves, not only the target upper part of the tube body and the valve base are welded, but also the upper and lower parts of the tube body are simultaneously welded, and the inside of the tube is blocked. . And I couldn't find any way to solve this problem and to do it with proper contents and time.

熱可塑性樹脂の高周波や超音波による熱溶着方法を、チ
ューブの工業的製造方法として具体的に検討を加えた例
はない。There is no example in which the method of heat-welding a thermoplastic resin by high frequency or ultrasonic waves has been specifically examined as an industrial tube manufacturing method.

本発明は、高周波もしくは超音波によりバルブをチュー
ブ本体へ容易にかつ安全に溶着する方法を提供するもの
である。The present invention provides a method for easily and safely welding a valve to a tube body by high frequency or ultrasonic waves.

問題点を解決するための手段 本発明は、チューブ内部へチューブに熱溶着しない材料
からなるセパレータを挿入して、チューブ本体とバルブ
の樹脂ベースとを高周波もしくは熱超音波により熱溶着
するものである。Means for Solving the Problems The present invention is to insert a separator made of a material that is not heat-welded into a tube into the tube, and heat-bond the tube body and the resin base of the valve by high frequency or thermal ultrasonic waves. .

作 用 チューブ内部へ挿入したセパレータが、相対向するチュ
ーブ内壁面同志の溶着を防止する。セパレータとして
は、熱溶着しない絶縁材の使用も可能であるが、後述の
ように金属材料を使用するのが好ましい。The separator inserted inside the working tube prevents welding of the opposing inner wall surfaces of the tube. As the separator, an insulating material that is not heat-welded can be used, but it is preferable to use a metal material as described later.

実施例 以下に本発明の実施例を図にもとづいて説明する。この
実施例では、特公昭56−3805号公報に記載された熱可塑
性ポリウレタン樹脂を使用し、高周波溶着法にてバルブ
を熱溶着する例を説明する。Example An example of the present invention will be described below with reference to the drawings. In this embodiment, an example in which a thermoplastic polyurethane resin described in Japanese Patent Publication No. 56-3805 is used and a valve is heat-welded by a high frequency welding method will be described.

３はチューブ本体であり、第３図のように、熱可塑性ポ
リウレタン樹脂を折幅27mmのチューブ状に押出し、定尺
裁断後、端末近くの上部にバルブ穴４を設けたものであ
る。Reference numeral 3 denotes a tube body, and as shown in FIG. 3, a thermoplastic polyurethane resin is extruded into a tube shape having a folding width of 27 mm, cut into a fixed length, and a valve hole 4 is provided in the upper portion near the end.

バルブは第４図のように、バルブベース２をチューブ本
体３と同じ熱可塑性樹脂を用い、インジェクション成型
にてバルブ本体１と一体成型する。バルブは通常品を使
用し、バルブベース２の寸法・形状も通常品と同じ長円
形又は円形として、バルブベース２の厚みに関しては、
チューブ本体３との相溶性をよくするために、縁にした
がってなだらかに薄くする。As for the valve, as shown in FIG. 4, the valve base 2 is made of the same thermoplastic resin as the tube body 3 and is integrally molded with the valve body 1 by injection molding. For the valve, a normal product is used, and the size and shape of the valve base 2 is the same oval or circular shape as the normal product. Regarding the thickness of the valve base 2,
In order to improve the compatibility with the tube body 3, the thickness is gently reduced along the edges.

次にチューブ本体３の上部のバルブ穴４の位置へ、バル
ブベース２の穴を合わせ、上下の電極5,6間にはさみ、
加圧状態で高周波を数秒間通電することにより、バルブ
ベース２をチューブ本体３の上面へ熱溶着する。この際
に、チューブ本体３の上部とバルブベース２の溶着だけ
でなく、チューブ本体３の上部と下部までもが溶着が起
こり、チューブ本体がふさがる問題が発生する。Next, align the hole of the valve base 2 with the position of the valve hole 4 on the upper part of the tube body 3, and sandwich it between the upper and lower electrodes 5 and 6,
The valve base 2 is heat-welded to the upper surface of the tube body 3 by applying a high frequency current for several seconds in a pressurized state. At this time, not only the upper part of the tube body 3 and the valve base 2 are welded, but also the upper part and the lower part of the tube body 3 are welded, which causes a problem of blocking the tube body.

そこで、この問題を解消するために本発明では、第１〜
第２図に示すように、チューブ本体３の上部と下部の
間、すなわちチューブ本体の内側へセパレータ７を挿入
する。これは熱溶融しないものを間に介在させることに
より不必要な溶着を防止するためである。Therefore, in order to solve this problem, in the present invention,
As shown in FIG. 2, the separator 7 is inserted between the upper part and the lower part of the tube body 3, that is, inside the tube body. This is to prevent unnecessary welding by interposing a material that does not heat-melt.

セパレータ７の材質は、熱溶融しない絶縁材でも、使用
することができるが、この場合は、同時にセパレータ自
体も発熱が起き、又、溶着に関係のないチューブ本体の
下部の部分も発熱溶融が起きる。As the material of the separator 7, an insulating material that does not melt by heat can be used, but in this case, the separator itself also generates heat, and also the lower part of the tube body, which is not related to welding, also generates heat and melts. .

従って、金属のような高周波特性の良い材質を使用する
ことにより、セパレータ自体が下部電極６と同じ下部電
極としての機能をもつこととなり、セパレータ自体の無
意味な発熱も起こさず、又、セパレータと下部電極の間
のチューブ本体の下部には、高周波による悪影響を全く
与えなくする効果をセパレータ７に付与できる。なお、
セパレータ７は、下部電極６と短絡させなくとも上記の
効果を与えることができるが、セパレータ７のチューブ
への挿入長さや電極間の位置などの作業のバラツキによ
り、セパレータの下部電極としての機能にバラツキが生
じる。従って、セパレータ７は、下部電極６と短絡させ
ることにより、確実にセパレータ７を下部電極としての
機能を持たせることができる。さらに、セパレータ７
は、金属を材質とすることにより、上下の電極間の加圧
による溶着部分の変形を防止し、溶融部分の冷却時の放
熱をよくすることができる。また、形状を細長いへら状
とすることにより、チューブ本体への抜き差しを簡単に
すばやく行なえるという作業性改善の効果を持たせるこ
とができる。Therefore, by using a material having good high frequency characteristics such as metal, the separator itself has the same function as the lower electrode 6 as the lower electrode 6, meaningless heating of the separator itself does not occur, and At the lower part of the tube body between the lower electrodes, the separator 7 can be provided with an effect of not giving any adverse effect due to high frequency. In addition,
The separator 7 can provide the above effect without being short-circuited with the lower electrode 6, but due to variations in work such as the insertion length of the separator 7 into the tube and the position between the electrodes, the separator 7 functions as the lower electrode of the separator. Variation occurs. Therefore, the separator 7 can surely have the function as the lower electrode by short-circuiting with the lower electrode 6. Furthermore, the separator 7
By using a metal as a material, it is possible to prevent deformation of the welded part due to pressure between the upper and lower electrodes, and improve heat dissipation during cooling of the melted part. In addition, by making the shape a slender spatula, it is possible to provide an effect of improving workability in that the tube can be easily inserted and removed.

セパレータの具体的な材質として、一般的な工業的金属
材料である鉄，銅，真鍮を用いても同様に熱溶着を行な
うことはできる。しかし、手作業で行なう作業内容から
セパレータ７の重量を軽くすることのできるアルミニウ
ムが最適である。この例で用いたセパレータの形状は厚
さ２〜2.5mmで、チューブ本体３の内側へフィットする
ように23mmの幅をもったへら状のものとした。Heat welding can be similarly performed by using iron, copper, or brass, which is a general industrial metal material, as a specific material of the separator. However, aluminum is most suitable because the weight of the separator 7 can be reduced from the content of the manual work. The separator used in this example had a thickness of 2 to 2.5 mm, and had a spatula shape with a width of 23 mm so as to fit inside the tube body 3.

電極は真鍮からなり、プレスの上下にそれぞれ取付け
る。特に上部電極５は、バルブベース２に合う長円形又
は円形とし、バルブベース２の上面にフィットするよう
な凹形で、かつ中心にはバルブ本体１の入る穴を明け
る。この時バルブ本体１と上部電極５とは、完全に絶縁
されていなければならない。下部電極６は、フラットな
平面でセパレータ７より幅を5mm以上広くするのがよ
い。The electrodes are made of brass and are installed above and below the press. In particular, the upper electrode 5 has an oval shape or a circular shape that fits the valve base 2, has a concave shape that fits the upper surface of the valve base 2, and has a hole into which the valve body 1 is inserted in the center. At this time, the valve body 1 and the upper electrode 5 must be completely insulated. The lower electrode 6 is preferably flat and has a width wider than that of the separator 7 by 5 mm or more.

高周波の通電後、数秒間加圧状態で放冷し、プレスを開
いてチューブを電極から取り出し、セパレータ７を抜き
取る。そしてチューブ本体３の両端をジョイント接合す
ることにより、チューブとして完成する。After energizing with a high frequency, the mixture is allowed to cool under a pressure for several seconds, the press is opened, the tube is taken out from the electrode, and the separator 7 is taken out. Then, both ends of the tube body 3 are joint-joined to complete the tube.

なお、各種肉厚・サイズのチューブに対して、又、各種
タイプのバルブに対しても同様に行なうことができる。
超音波による熱溶着の場合も、上記電極と同じ形状の超
音波溶着用治具の使用により、同様に行なうことができ
る。It should be noted that the same can be applied to tubes of various wall thicknesses and sizes, and also to various types of valves.
The thermal welding by ultrasonic waves can be similarly performed by using an ultrasonic welding jig having the same shape as that of the above electrodes.

発明の効果 以上のように本発明は、作業環境面で問題もなく、簡単
な作業内容で迅速にチューブ本体へのバルブの接合を行
なうことができ、熱可塑性樹脂からなるチューブの工業
的製造が可能となり、実用化に向けて大きく前進させる
ものである。EFFECTS OF THE INVENTION As described above, the present invention has no problem in terms of working environment, can quickly join a valve to a tube body with a simple work content, and can industrially manufacture a tube made of a thermoplastic resin. It will be possible and will make a big step toward practical application.

【図面の簡単な説明】[Brief description of drawings]

第１図は本発明の実施例におけるバルブ溶着時のチュー
ブ方向の断面図、第２図はチューブ裁断方向の断面図、
第３図はチューブ本体の斜視図、第４図はバルブの一部
を断面にした側面図、第５図はチューブにセパレータを
挿入した時の外観図、第６図はセパレータの外観図であ
る。 １……バルブ本体、２……バルブベース、３……チュー
ブ本体、４……バルブ穴、５……上部電極、６……下部
電極、７……セパレータ。FIG. 1 is a sectional view in the tube direction when welding a valve in an embodiment of the present invention, and FIG. 2 is a sectional view in the tube cutting direction,
FIG. 3 is a perspective view of the tube body, FIG. 4 is a side view in which a part of the valve is shown in cross section, FIG. 5 is an external view when a separator is inserted in the tube, and FIG. 6 is an external view of the separator. . 1 ... Valve body, 2 ... Valve base, 3 ... Tube body, 4 ... Valve hole, 5 ... Upper electrode, 6 ... Lower electrode, 7 ... Separator.

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】熱可塑性樹脂からなるチューブ本体とバル
ブベースとを当接するとともに、チューブ内部へ熱溶着
しない材料からなるセパレータを挿入し、高周波もしく
は超音波により前記チューブ本体とバルブベースを熱溶
着させることを特徴としたタイヤ用チューブの製造方
法。1. A tube body made of a thermoplastic resin and a valve base are brought into contact with each other, a separator made of a material which is not heat-welded is inserted into the tube, and the tube body and the valve base are heat-welded by high frequency or ultrasonic waves. A method for manufacturing a tire tube, which is characterized by the above. 【請求項２】前記セパレータが金属からなる特許請求の
範囲第１項記載のタイヤ用チューブの製造方法。2. The method for manufacturing a tire tube according to claim 1, wherein the separator is made of metal. 【請求項３】前記セパレータを前記溶着部と反対側に配
した電極と短絡された特許請求の範囲第２項記載のタイ
ヤ用チューブの製造方法。3. The method for manufacturing a tire tube according to claim 2, wherein the separator is short-circuited to an electrode arranged on the side opposite to the welded portion.
JP61103367A 1986-05-06 1986-05-06 Method for manufacturing tire tube Expired - Lifetime JPH0669722B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61103367A JPH0669722B2 (en) 1986-05-06 1986-05-06 Method for manufacturing tire tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61103367A JPH0669722B2 (en) 1986-05-06 1986-05-06 Method for manufacturing tire tube

Publications (2)

Publication Number Publication Date
JPS62257830A JPS62257830A (en) 1987-11-10
JPH0669722B2 true JPH0669722B2 (en) 1994-09-07

Family

ID=14352144

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61103367A Expired - Lifetime JPH0669722B2 (en) 1986-05-06 1986-05-06 Method for manufacturing tire tube

Country Status (1)

Country Link
JP (1) JPH0669722B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1167211B1 (en) 2000-05-23 2004-08-11 Société des Produits Nestlé S.A. An assembly with a pouch and a fitment and a process for its manufacture
GB0228651D0 (en) * 2002-12-09 2003-01-15 Elopak Systems Improvements in or relating to laminates, methods and products
WO2014150550A1 (en) 2013-03-15 2014-09-25 Bridgestone Americas Tire Operations, Llc Light-weight inner tube and related methods
CN108527903A (en) * 2018-05-24 2018-09-14 中策橡胶集团有限公司 A kind of inner tube of a tyre ultrasonic wave automatic valve-sticking device

Also Published As

Publication number Publication date
JPS62257830A (en) 1987-11-10

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