JP2549941B2 - Hollow molded body manufacturing method - Google Patents

Hollow molded body manufacturing method

Info

Publication number
JP2549941B2
JP2549941B2 JP24523990A JP24523990A JP2549941B2 JP 2549941 B2 JP2549941 B2 JP 2549941B2 JP 24523990 A JP24523990 A JP 24523990A JP 24523990 A JP24523990 A JP 24523990A JP 2549941 B2 JP2549941 B2 JP 2549941B2
Authority
JP
Japan
Prior art keywords
mold
tube
core
base cloth
synthetic 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 - Lifetime
Application number
JP24523990A
Other languages
Japanese (ja)
Other versions
JPH04125124A (en
Inventor
宗弘 伊達
敦則 杉山
和弘 粂
隆夫 関
重明 栗原
正之 富樫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mizuno Corp
Inoac Corp
Original Assignee
Mizuno Corp
Inoac Corp
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 Mizuno Corp, Inoac Corp filed Critical Mizuno Corp
Priority to JP24523990A priority Critical patent/JP2549941B2/en
Publication of JPH04125124A publication Critical patent/JPH04125124A/en
Application granted granted Critical
Publication of JP2549941B2 publication Critical patent/JP2549941B2/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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C49/4802—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C49/4802—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity
    • B29C2049/4805—Moulds with means for locally compressing part(s) of the parison in the main blowing cavity by closing the mould halves
    • 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
    • B29L2031/00—Other particular articles
    • B29L2031/48—Wearing apparel
    • B29L2031/4842—Outerwear
    • B29L2031/4864—Gloves

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming 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、中空成形体や中空成形の野球グラブ、ミッ
ト類の製造方法の改良に係るものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a method for producing a hollow molded article, a hollow molded baseball glove, and a mitt.

（従来の技術） 従来より、合成樹脂を使用した中空成形体の製造方法
としては、色々な方法が発明されている。(Prior Art) Conventionally, various methods have been invented as a method for producing a hollow molded article using a synthetic resin.

即ち、回転成形、スラッシュ成形、ブロー成形、射出
成形、流動浸漬成形等が公知となっている。That is, rotational molding, slush molding, blow molding, injection molding, fluid immersion molding and the like are known.

これらの成形法では、硬質や軟質を問わず合成樹脂製
の成形品の成形が可能であるが、これら従来の成形法で
は、単一材料の成形に限られていた。With these molding methods, molded articles made of synthetic resin can be molded regardless of whether they are hard or soft, but these conventional molding methods are limited to molding of a single material.

（発明が解決しようとする課題） これら、従来より公知の成形方法では、前述のごとく
単一材料を用いた成形方法に限定されるため、以下のよ
うな問題点を有していた。(Problems to be Solved by the Invention) These conventionally known molding methods have the following problems because they are limited to molding methods using a single material as described above.

即ち、回転成形、スラッシュ成形、ブロー成形等の方
法を用いて、軟質材料を使用し、人工皮革、合成皮革に
匹敵する柔らかさや風合いや可撓性のある複雑な形状の
中空成形体を得ることが出来るが、その反面、得られた
中空成形体の強度、特に引張強度や引裂強度は、人工皮
革や合成皮革には、到底及ばないものであった。一方、
基布をインサートした射出成形や基布を被覆した形態で
の流動浸漬成形では、引張強度や引裂強度はある程度向
上さすことは可能であるが、回転成形、スラッシュ成
形、ブロー成形等の方法に比較して、逆に複雑な形状の
中空成形体は、出来ないと言った問題点を有していた。That is, by using a method such as rotational molding, slush molding, blow molding, etc., using a soft material, to obtain a hollow molded article having a complex shape with softness, texture and flexibility comparable to artificial leather and synthetic leather. However, on the other hand, the strength, especially the tensile strength and the tear strength of the obtained hollow molded article were far below those of artificial leather and synthetic leather. on the other hand,
It is possible to improve the tensile strength and tear strength to some extent in injection molding with a base cloth inserted and flow immersion molding with a base cloth covered, but compared with methods such as rotational molding, slush molding and blow molding. On the contrary, there is a problem that a hollow molded article having a complicated shape cannot be formed.

又、人工皮革や合成皮革を使用し、真空成形や圧空成
形や熱プレス成形等の熱成形により、形成することも可
能であるが、これらのものは、ある程度のアンダーカッ
ト形状の成形は可能であるものの、中空成形体の成形
は、不可能であった。It is also possible to form artificial leather or synthetic leather by thermoforming such as vacuum forming, pressure forming, hot press forming, etc., but these can be formed to some extent undercut shape. However, it was impossible to mold a hollow molded body.

なお、ウエルダー加工により袋物の形態に溶着加工す
ることは可能であるが、三次元的な立体感のある中空成
形体を形成することは、出来なかった。Although it is possible to perform welding processing in the form of a bag by welding, it was not possible to form a hollow molded article having a three-dimensional three-dimensional effect.

（課題を解決するための手段） 本発明は、これら従来の欠点に鑑み引張強度や引裂強
度を向上させると共に、複雑な三次元的形状の中空成形
物を製造する方法を提供することを目的になされたもの
である。(Means for Solving the Problem) The present invention aims to provide a method for producing a hollow molded article having a complicated three-dimensional shape while improving tensile strength and tear strength in view of these conventional drawbacks. It was made.

即ち、任意形状の加工を施した凹部を有し且つ、複数
個の割型よりなる金型と、該金型を組み合せて形成する
空隙部の形状に略相似させ、且つ空気排出孔を設けた中
子を端部を担う金型である割型に着脱自在に装着し、該
中子にチューブを被覆すると共に、該チューブを被覆し
た中子を金型より離脱し、該チューブの端部を前記金型
の端部に形成したチューブ固定部に固定しておき、（例
えば、チューブの端部を割金型で挟持するように固定す
ることが可能である。）次に、該チューブに伸縮自在の
基布を被覆した後、該基布を被覆した中子を金型より離
脱し、前記基布の端部を前記金型乃至はチューブ固定部
に形成した基布固定部に固定し、（例えば、ピンを適宜
数突出しておき該ピンに基布を突き刺すようにして固定
することも可能である。）更に、前記チューブ及び基布
を被覆した前記中子を、金型より離脱して合成樹脂にデ
ィピングするか、乃至は金型に装着したままで、スプレ
ー塗布、刷毛塗り等の任意手段で合成樹脂を含浸させる
と共に、前記複数個の割型よりなる金型すべてを圧締し
前記中子に空気を注入して、前記中子に被覆したチュー
ブを膨脹せしめ、前記伸縮自在の基布を前記金型の壁面
に押圧し硬化させて中空成形体を製造することを特徴と
する中空成形体の製造方法である。That is, a mold having a concave portion having an arbitrary shape and having a plurality of split molds, and a cavity formed by combining the molds are formed substantially similar to each other, and an air discharge hole is provided. The core is detachably attached to a split mold that is a mold that bears the end, the core is covered with a tube, the core covered with the tube is removed from the mold, and the end of the tube is removed. The tube is fixed to the tube fixing portion formed at the end of the mold (for example, the end of the tube can be fixed so as to be sandwiched by a split mold). Then, the tube is expanded and contracted. After coating a flexible base cloth, the core covered with the base cloth is released from the mold, and the end portion of the base cloth is fixed to the base cloth fixing portion formed in the mold or the tube fixing portion, (For example, it is also possible to project an appropriate number of pins and fix the base fabric by piercing the pins. .) Further, the core coated with the tube and the base cloth is detached from the mold and dipped in the synthetic resin, or by being attached to the mold by an arbitrary means such as spray coating or brush coating. Along with impregnating with a synthetic resin, all the molds made of the plurality of split molds are pressed to inject air into the core to expand the tube covered with the core, and to expand and contract the base fabric. The method for producing a hollow molded article is characterized in that the hollow molded article is produced by pressing against the wall surface of the mold to cure the hollow molded article.

更に、他の形態として、一例を挙げると野球グラブの
形状を有し且つ、複数個の割型よりなる金型と、該金型
を組み合わせて形成する空隙部の手形形状に略相似し、
空気排出孔を設けた中子を端部を担う金型である割型に
着脱自在に装着し、該中子にチューブを被覆すると共
に、該チューブを被覆した中子を金型より離脱し、該チ
ューブの端部を前記金型の端部に形成したチューブ固定
部に固定しておき、（例えば、前述の割金型で挟持した
り、固定用ベルトで巻着圧締して固定することも可能で
ある。）次に、該チューブに伸縮自在の基布を被覆した
後、該基布を被覆した中子を金型より離脱し、前記基布
の端部を前記金型に形成した基布固定部に固定し、（例
えば、前述のピン方式以外に固定用ベルトを巻着圧締し
て固定することも可能である。）更に、前記チューブ及
び基布を被覆した前記中子を、金型より離脱して合成樹
脂にディピングするか、乃至は金型に装着したままで、
スプレー塗布、刷毛塗り等の任意手段で合成樹脂を含浸
させると共に、前記複数個の割型よりなる金型すべてを
圧締し、前記中子に空気を注入して、前記中子に被覆し
たチューブを膨脹せしめ、前記伸縮自在の基布を前記金
型の壁面に押圧し、硬化させて中空成形の野球グラブを
製造することを特徴とする中空成形の野球グラブの製造
方法である。Furthermore, as another form, for example, it has a shape of a baseball glove, and is substantially similar to a die formed of a plurality of split dies and a hand shape of a void formed by combining the dies,
A core provided with an air discharge hole is detachably attached to a split mold that is a mold that bears an end, and while the core is covered with a tube, the core covered with the tube is separated from the mold, The end portion of the tube is fixed to the tube fixing portion formed on the end portion of the mold (for example, it is clamped by the above-mentioned split mold, or fixed by winding and tightening with a fixing belt). Next, after covering the tube with a stretchable base cloth, the core covered with the base cloth is removed from the mold, and the end portion of the base cloth is formed in the mold. The core and the core covered with the tube and the base cloth are fixed to the base cloth fixing portion (for example, it is possible to fix the fixing belt by winding and pressing other than the pin method described above). , Detach from the mold and dip it into the synthetic resin, or leave it attached to the mold,
A tube in which the synthetic resin is impregnated by any means such as spray coating or brush coating, and at the same time, all the molds made of the plurality of split molds are pressed, air is injected into the core, and the core is covered. Is expanded, and the stretchable base cloth is pressed against the wall surface of the mold to be cured to produce a hollow-molded baseball glove, which is a method for manufacturing a hollow-molded baseball glove.

なお、本発明に係る中空成形体の製造方法において
は、チューブとしては、クロロプレン系やその他の耐熱
性と伸縮性の良好なラバーやポリアミドやポリエステル
その他の耐熱性合成樹脂を適宜選択して使用することが
可能である。In the method for producing a hollow molded article according to the present invention, as the tube, a chloroprene-based or other rubber having good heat resistance and elasticity and polyamide, polyester, or other heat resistant synthetic resin is appropriately selected and used. It is possible.

又、伸縮自在の基布としては、ゴム編み、ニット、ニ
ードルフェルト、不織布、その他の伸縮性が良好な基布
を使用することが出来るほか、伸縮自在の糸を使用した
織物を使用することも可能である。Further, as the stretchable base fabric, rubber knitting, knit, needle felt, non-woven fabric, or other stretchable base fabric can be used, and woven fabric using stretchable yarn can also be used. It is possible.

その他、本発明に使用する合成樹脂としては、硬化し
ても可撓性があり、且つ基布との接着性が良好な合成樹
脂を使用することにより、基布を積層接着することも可
能となる。例えば、塩化ビニルペーストゾル溶液や２液
タイプのポリウレタン樹脂等を使用することが望まし
い。In addition, as the synthetic resin used in the present invention, it is possible to laminate and bond the base cloth by using a synthetic resin that is flexible even when cured and has good adhesiveness to the base cloth. Become. For example, it is desirable to use a vinyl chloride paste sol solution, a two-component polyurethane resin, or the like.

なお、本発明の中空成形の野球グラブにおいては、ウ
ェブを同時に成形することも可能であるが、ウェブを別
途成形しておき、後で野球グラブの本体に任意手段で装
着する方がよりウェブの形状や強度やデザイン上からも
設計の自由度が向上し、バラェティーに富んだ野球グラ
ブを供給出来るものである。In the blow molding baseball glove of the present invention, it is possible to form the web at the same time, but it is better to form the web separately and then attach the web to the baseball glove body by any means later. The degree of freedom in design is improved in terms of shape, strength, and design, and a variety of baseball gloves can be supplied.

（作 用） 本発明は以上のような構成であるため、以下のような
作用を奏するものである。(Operation) Since the present invention is configured as described above, it has the following effects.

即ち、金型が形成する空隙部の形状に略相似する中子
を使用し、更に該中子には、空気排出孔が形成されてい
ることから、該中子にチューブを被覆し、且つプリプレ
グ化した基布乃至は、伸縮自在の基布を被覆した後、合
成樹脂を適宜含浸した上で、該中子に空気を注入すれ
ば、中子に形成した空気排出孔からチューブ内に空気が
流入し、チューブは容易に金型形状に沿って膨脹し、中
子に被覆した基布は金型形状によく合致した複雑な形状
に押圧されて、中空成形体や中空成形の野球グラブを極
めて容易に成形することが出来るものである。That is, since a core having a shape substantially similar to the shape of the cavity formed by the mold is used and the core has an air discharge hole, the core is covered with a tube and the prepreg is used. The coated base fabric or the stretchable base fabric is coated, and then synthetic resin is appropriately impregnated, and then air is injected into the core, whereby air is introduced into the tube through the air discharge hole formed in the core. Inflow, the tube easily expands along the mold shape, and the base cloth coated on the core is pressed into a complicated shape that conforms well to the mold shape, making the hollow molded body and the baseball glove of the hollow molded extremely. It can be easily molded.

又、本発明に係る中空成形体や中空成形の野球グラブ
の製造方法においては、従来の成形方法では不可能であ
った薄肉の中空成形体や中空成形の野球グラブを成形す
ることが、伸縮自在の基布とチューブを膨脹させる方法
を用いることにより可能となるため、基布の厚みを適宜
変えることにより、強度を自由に設定することが出来る
ものである。Further, in the method of manufacturing a hollow molded article or a hollow molded baseball glove according to the present invention, it is possible to expand and contract by molding a thin hollow molded article or a hollow molded baseball glove, which is impossible by the conventional molding method. Since this can be achieved by using the method of expanding the base cloth and the tube, the strength can be freely set by appropriately changing the thickness of the base cloth.

更に、本発明の中空成形体の製造方法では、前記の基
布の特性値を適宜選択することにより、引張強度や引裂
強度を向上さすことが可能であるほか、基布の縦横の伸
縮度を変化さすことも出来るため、中空成形体自体の伸
縮度も変えることが出来るものである。Furthermore, in the method for producing a hollow molded article of the present invention, tensile strength and tear strength can be improved by appropriately selecting the characteristic values of the above-mentioned base cloth, and the vertical and horizontal stretchability of the base cloth can be increased. Since it can be changed, the degree of expansion and contraction of the hollow molded article itself can also be changed.

又、成形の際に金型に凹部を形成しておき、該凹部に
別パーツをインサートして成形することにより、例えば
各種の色調のパーツ部分を有する中空成形体や中空成形
の野球クラブを供給することが出来るものである。Further, by forming a concave portion in the mold during molding and inserting another part into the concave portion and molding, for example, a hollow molded body having a part portion of various color tones or a hollow molded baseball club is supplied. It is something you can do.

又、金型の内面にゲルコートを塗布した後、本発明に
係る中空成形体の製造方法に則り製造すれば、ゲルコー
トの色調を種々変化させることにより、各種の色合いの
中空成形体や中空成形の野球グラブを供給すると共に、
表面状態の良好なものも合わせて供給出来るものであ
る。Further, after applying a gel coat to the inner surface of the mold, if manufactured according to the method for producing a hollow molded article according to the present invention, by varying the color tone of the gel coat, it is possible to obtain a hollow molded article or a hollow molded article of various shades. While supplying baseball glove,
It is also possible to supply products with good surface condition.

更に、本発明においては、中子の上に被覆するチュー
ブの膨脹係数を中空成形体の前面側と後面側で変化さす
ことにより、チューブの膨脹の仕方が変化し、中空成形
する際に、例えば突出の度合が大きい方は、チューブの
膨脹係数を大きくすれば、うまく金型形状に沿うことに
なるものである。その他、本発明においては、基布の形
状をシームレスにすることにより、より引張強度や引張
強度を向上さすことが出来るものである。Further, in the present invention, by changing the expansion coefficient of the tube coated on the core on the front surface side and the rear surface side of the hollow molded body, the manner of expansion of the tube changes, and when the hollow molding is performed, for example, If the degree of protrusion is large, the expansion coefficient of the tube can be made large so that the shape of the mold will be well followed. In addition, in the present invention, the tensile strength and the tensile strength can be further improved by making the shape of the base cloth seamless.

なお、本発明においては、使用する合成樹脂に接着性
の良好なものを使用すれば、基布の積層が可能となり、
より強度を向上さすことが出来るものである。In the present invention, if a synthetic resin having good adhesiveness is used, the base cloth can be laminated,
The strength can be further improved.

更に、ウェブを別途成形して野球グラブの本体に装着
することにより、設計の自由度の大きい野球グラブを提
供することが出来ると言った効果を奏するものである。Further, by separately molding the web and mounting it on the baseball glove body, it is possible to provide a baseball glove having a high degree of freedom in design.

（実施例） 本発明の実施例を図面に基づいて説明すれば、即ち、
第１図乃至第４図に示すように、任意形状の加工を施し
た凹部1aを有し且つ、複数個の割型よりなる金型１と、
該金型１を組み合せて形成する空隙部２の形成に略相似
し、空気排出孔3aを設けた中子３を端部を担う金型であ
る割型に着脱自在に装着し、該中子３にチューブ４を被
覆すると共に、該チューブ４を被覆した中子３を金型１
より離脱し、該チューブ４の端部4aを前記金型１の端部
1bに形成したチューブ固定部1cに固定し、次に該チュー
ブ４に伸縮自在の基布５を被覆した後、該基布５を被覆
した中子３を金型１より離脱し、前記基布５の端部5aを
前記金型１に形成した基布固定部1dに固定し、更に前記
チューブ４及び基布５を被覆した前記中子３を、金型１
より離脱して合成樹脂６にディピングするか、乃至は金
型１に装着したままで、スプレー塗布、刷毛塗り等の任
意手段で合成樹脂６を含浸させると共に、前記複数個の
割型よりなる金型１すべてを圧締し、前記中子３に空気
を注入して、前記中子３に被覆したチューブ４を膨脹せ
しめ、前記伸縮自在の基布５を前記金型１の壁面に押圧
し硬化させることにより、中空成形体７を製造すること
を特徴とする中空成形体の製造方法である。(Example) An example of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 4, a mold 1 including a plurality of split molds, which has a recess 1a processed to have an arbitrary shape,
Almost similar to the formation of the void 2 formed by combining the molds 1, the core 3 provided with the air discharge hole 3a is detachably attached to the split mold which is the mold that bears the end. 3 is coated with the tube 4, and the core 3 coated with the tube 4 is attached to the mold 1
And remove the end 4a of the tube 4 from the end of the mold 1.
After fixing to the tube fixing portion 1c formed in 1b and then covering the tube 4 with the stretchable base cloth 5, the core 3 covered with the base cloth 5 is removed from the mold 1, 5 is fixed to the base cloth fixing portion 1d formed on the mold 1, and the core 3 covered with the tube 4 and the base cloth 5 is fixed to the mold 1
The resin is further separated and dipped in the synthetic resin 6, or the synthetic resin 6 is impregnated by an arbitrary means such as spray coating, brush coating, etc., while being attached to the mold 1, and a metal formed by the plurality of split molds. All the mold 1 is clamped, air is injected into the core 3, the tube 4 covering the core 3 is expanded, and the stretchable base cloth 5 is pressed against the wall surface of the mold 1 to cure. This is a method for manufacturing a hollow molded body, which comprises manufacturing the hollow molded body 7.

又、本発明のその他の形態として、第５図乃至第９図
に示すように、野球グラブの形状を有し且つ、複数個の
割型よりなる金型１と、該金型１を組み合せて形成する
空隙部２の形状に略相似し、且つ空気排出孔3aを設けた
中子３を端部を担う金型である割型に着脱自在に装着
し、該中子３には、金型で形成する空隙部２の形状に略
相似のチューブ４を被覆すると共に、該チューブ４を被
覆した中子３を金型１より離脱し、該チューブ４の端部
4aを前記金型１の端部1bに形成したチューブ固定部1cに
固定しておき、次に、該チューブ４に伸縮自在の基布５
を被覆した後、該基布５を被覆した中子３を金型１より
離脱し、前記基布５の端部5aを前記金型１に形成した基
布固定部1dに固定し、更に前記チューブ４及び基布５を
被覆した前記中子３を、金型１より離脱して合成樹脂６
にディピングするか、乃至は金型１に装着したままで、
スプレー塗布、刷毛塗り等の任意手段で合成樹脂６を含
浸させると共に、前記複数個の割型よりなる金型１すべ
てを圧締し、前記中子３の下端に設けたノズル3bから前
記中子３に空気を注入して、前記チューブ４を膨脹させ
て、前記伸縮自在の基布５を前記金型１の壁面に押圧し
硬化させて中空成形の野球グラブ7Aを製造することを特
徴とする中空成形の野球グラブの製造方法である。As another embodiment of the present invention, as shown in FIGS. 5 to 9, a mold 1 having a shape of a baseball glove and comprising a plurality of split molds, and the mold 1 are combined. A core 3 having a shape substantially similar to that of the void 2 to be formed and provided with an air discharge hole 3a is detachably attached to a split mold which is a mold that bears an end, and the core 3 has a mold. The tube 4 having a shape substantially similar to the shape of the void 2 formed in step 1 is covered, and the core 3 covering the tube 4 is removed from the mold 1 to form an end part of the tube 4.
4a is fixed to the tube fixing portion 1c formed on the end 1b of the mold 1, and then the base cloth 5 is stretchable on the tube 4.
, The core 3 coated with the base cloth 5 is separated from the mold 1, and the end 5a of the base cloth 5 is fixed to the base cloth fixing portion 1d formed on the mold 1, and The core 3 coated with the tube 4 and the base cloth 5 is separated from the mold 1 and the synthetic resin 6 is removed.
To the mold 1 or with the mold 1 still attached,
The synthetic resin 6 is impregnated by an arbitrary means such as spray coating or brush coating, and all the molds 1 made up of the plurality of split molds are clamped, and the core 3 is provided from the nozzle 3b provided at the lower end of the core 3. 3 is inflated by inflating the tube 4, and the stretchable base fabric 5 is pressed against the wall surface of the mold 1 to be cured to produce a hollow-molded baseball glove 7A. It is a method of manufacturing a hollow baseball glove.

なお、本発明に係る中空成形体等の製造に使用する金
型においては、通気孔1eを適宜数形成しておくことによ
り、金型内の空気を排出し、成形時の中空成形体の成形
性が良好となるものである。In the mold used for manufacturing the hollow molded body or the like according to the present invention, by appropriately forming the ventilation holes 1e, the air in the mold is discharged, and the hollow molded body is molded at the time of molding. The property is good.

なお、本発明に係る中空成形の野球クラブの製造方法
においては、中子に被覆するチューブの形状は中子の形
状及び金型の空隙形状に略相似した形状のものを使用す
ることにより、成形性がより向上するものである。In the method for producing a hollow-molded baseball club according to the present invention, the shape of the tube covering the core is a shape that is substantially similar to the shape of the core and the void shape of the mold. This improves the sex.

又、第５図乃至第６図に示す野球クラブはウェブが形
成されていないが、この点に関しては、図示はしなかっ
たが、ウェブを同時一体成形することも可能であるし、
好ましくはウェブを別途成形して、後で野球クラブ本体
に装着することも可能である。Further, the baseball club shown in FIGS. 5 to 6 has no web formed, but in this respect, although not shown, it is possible to integrally form the web,
It is also possible to separately mold the web and attach it later to the baseball club body.

なお、図面は省略したが、野球ミット類の製造方法も
同じである。Although illustration is omitted, the manufacturing method of baseball mitts is the same.

（発明の効果） 本発明は以上のような構成であるため、以下のような
効果を奏するものである。(Effects of the Invention) Since the present invention is configured as described above, it has the following effects.

即ち、本発明の中空成形体及び中空成形の野球グラブ
の製造方法においては、中子及びチューブの形状を金型
が形成する空隙部の形状に略相似させておくことによ
り、中子に空気を注入すれば金型形状に沿ってチューブ
が膨脹するため、伸縮自在の基布は金型の壁面に押圧さ
れるから、金型形状によく合致した複雑な形状の中空成
形体や中空成形の野球グラブを極めて容易に成形するこ
とが出来ると言った効果が生じるものである。That is, in the method of manufacturing a hollow molded body and a baseball glove of the hollow molding of the present invention, by making the shapes of the core and the tube substantially similar to the shape of the void formed by the mold, air is introduced into the core. Since the tube expands along the shape of the mold when injected, the stretchable base cloth is pressed against the wall surface of the mold, so a hollow molded body with a complicated shape that conforms well to the mold shape or a hollow molded baseball The effect that the grab can be formed extremely easily occurs.

又、本発明に係る中空成形体や中空成形の野球グラブ
の製造方法においては、従来の成形方法では不可能であ
った薄肉に成形することが、伸縮自在の基布とチューブ
を膨脹させる方法を用いることにより可能となり、又、
基布の厚みや伸縮性を適宜変えることにより、引張強度
や引裂強度を向上さすことが可能となるため種々の特性
値を有する中空成形体や中空成形の野球グラブを製造す
ることが出来るものである。Further, in the method for manufacturing a hollow molded article or a hollow molded baseball glove according to the present invention, it is possible to mold a stretchable base cloth and a tube by molding into a thin wall, which is impossible by the conventional molding method. It becomes possible by using, and
By appropriately changing the thickness and stretchability of the base fabric, it becomes possible to improve the tensile strength and tear strength, so that it is possible to manufacture hollow molded articles and hollow molded baseball glove having various characteristic values. is there.

又、成形の際に金型に種々な形状の凹部を形成してお
けば、該凹部に別パーツをインサートして成形すること
により、例えば各種の色調の異なるパーツ部分や物性の
異なるパーツ部分を配置した中空成形体や中空成形の野
球クラブを供給することが出来るものである。In addition, if recesses of various shapes are formed in the mold during molding, by inserting different parts into the recesses and molding, for example, parts having different color tones or parts having different physical properties can be formed. It is possible to supply hollow molded bodies and hollow molded baseball clubs arranged.

又、金型の内面にゲルコートを塗布した後、本発明に
係る中空成形体の製造方法に則り製造すれば、ゲルコー
トの色調を種々変化させることにより、各種の色合いの
中空成形体や中空成形の野球グラブを供給出来ると共
に、表面状態の良好なものも合わせて供給出来ると言っ
た効果も奏するものである。Further, after applying a gel coat to the inner surface of the mold, if manufactured according to the method for producing a hollow molded article according to the present invention, by varying the color tone of the gel coat, it is possible to obtain a hollow molded article or a hollow molded article of various shades. In addition to being able to supply the baseball glove, it also has the effect of being able to supply the one with a good surface condition.

その他、野球グラブにおいてはウェブを同時一体成形
することも出来るほか、ウェブを別途成形して野球グラ
ブ本体に装着することにより、設計の自由度の大きい野
球グラブを供給出来ると言った効果も奏するものであ
る。In addition, in the baseball glove, the web can be integrally molded at the same time, and by separately molding the web and mounting it on the baseball glove body, it is possible to supply a baseball glove with a large degree of freedom in design. Is.

更に、本発明においては、中子の上に被覆するチュー
ブの膨脹係数を所望部位で変化さすことにより、チュー
ブの膨脹の仕方が変化し、成形する際に、例えば突出の
度合が大きい複雑な形状の方は、チューブの膨脹係数を
大きくすれば、うまく金型形状に沿いやすくなり、成形
性がより向上するものである。Further, in the present invention, the expansion coefficient of the tube to be coated on the core is changed at a desired portion to change the expansion method of the tube, and when molding, for example, a complicated shape with a large degree of protrusion is formed. In the case of (1), if the expansion coefficient of the tube is increased, it becomes easier to follow the shape of the mold, and the moldability is further improved.

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

第１図乃至第２図は、本発明に係る中空成形体の製造工
程を示す断面図、第３図は、本発明に係る中空成形体の
製造方法に使用する中子を示す平面図、第３図は、本発
明に係る中子を示す平面図、第４図は、本発明に係る中
空成形体の製造工程を示す要部拡大断面図、第５図乃至
第６図は、本発明の他の実施例に係る中空成形による野
球グラブの正面及び背面を示す斜視図、第７図は、本発
明の他の実施例である中空成形の野球グラブの製造方法
の一工程を示す斜視図、第８図は、本発明の他の実施例
である中空成形の野球グラブの製造に使用する中子を示
す平面図、第９図は、本発明の他の実施例である中空成
形の野球グラブの製造工程を示す要部断面図。 1:金型、1a:凹部、1b:端部、1c:チューブ固定部、1d:基
布固定部、1e:通気孔、2:空隙部、3:中子、3a:空気排出
孔、3b:ノズル、4:チューブ、4a:チューブ端部、5:基
布、5a:端部,6:合成樹脂、7:中空成形体、7A:中空成形
野球グラブ。1 to 2 are cross-sectional views showing a process for producing a hollow molded body according to the present invention, and FIG. 3 is a plan view showing a core used in the method for producing a hollow molded body according to the present invention. FIG. 3 is a plan view showing a core according to the present invention, FIG. 4 is an enlarged cross-sectional view of an essential part showing a manufacturing process of a hollow molded body according to the present invention, and FIGS. The perspective view which shows the front and back of the baseball glove by the hollow molding which concerns on another Example, FIG. 7 is a perspective view which shows 1 process of the manufacturing method of the baseball glove of the hollow molding which is another Example of this invention, FIG. 8 is a plan view showing a core used for manufacturing a blow molded baseball glove which is another embodiment of the present invention, and FIG. 9 is a blow molded baseball glove which is another embodiment of the present invention. FIG. 4 is a cross-sectional view of a main part showing the manufacturing process of. 1: mold, 1a: concave part, 1b: end part, 1c: tube fixing part, 1d: base cloth fixing part, 1e: vent hole, 2: void part, 3: core, 3a: air discharge hole, 3b: Nozzle, 4: Tube, 4a: Tube end, 5: Base cloth, 5a: End, 6: Synthetic resin, 7: Hollow molded body, 7A: Hollow molded baseball glove.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 関 隆夫 岐阜県養老郡養老町高田3877―８ 美津 濃株式会社養老工場内 (72)発明者 栗原 重明 愛知県安城市今池町３丁目１番36号 株 式会社イノアックコーポレーション安城 事業所内 (72)発明者 富樫 正之 愛知県安城市今池町３丁目１番36号 株 式会社イノアックコーポレーション安城 事業所内 審査官 寺本 光生 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Takao Seki, Takao Seki 3877-8, Yoro-cho, Yoro-gun, Gifu Mitsuno Co., Ltd., Yoro Plant (72) Inventor Shigeaki Kurihara 3-36 Imaike-cho, Anjo City, Aichi Prefecture Inoac Corporation Anjo Office (72) Inventor Masayuki Togashi No. 1-36 Imaikecho, Anjo City, Aichi Prefecture Inoac Corporation Anjo Office Inspector Mitsuo Teramoto

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】任意形状の加工を施した凹部を有し且つ、
複数個の割型よりなる金型と、該金型を組み合せて形成
する空隙部の形状に略相似し、空気排出孔を設けた中子
を端部を担う金型である割型に着脱自在に装着し、該中
子にチューブを被覆すると共に、該チューブを被覆した
中子を金型より離脱し、該チューブの端部を前記金型の
端部に形成したチューブ固定部に固定し、次に該チュー
ブに伸縮自在の基布を被覆した後、該基布を被覆した中
子を金型より離脱し、前記基布の端部を前記金型に形成
した基布固定部に固定し、更に前記チューブ及び基布を
被覆した前記中子を、金型より離脱して合成樹脂にディ
ピングするか、乃至は金型に装着したままで、スプレー
塗布、刷毛塗り等の任意手段で合成樹脂を含浸させると
共に、前記複数個の割型よりなる金型すべてを圧締し、
前記中子に空気を注入して、前記中子に被覆したチュー
ブを膨脹せしめ、前記伸縮自在の基布を前記金型の壁面
に押圧し硬化させることにより、中空成形体を製造する
ことを特徴とする中空成形体の製造方法。1. A recess having a shape of arbitrary shape, and
A mold consisting of a plurality of split molds, and the shape of the void formed by combining the molds is approximately similar, and the core provided with air discharge holes can be attached to and detached from the split mold that is the mold that bears the end. Mounted on, the core is coated with a tube, the core coated with the tube is removed from the mold, the end of the tube is fixed to the tube fixing portion formed at the end of the mold, Next, after covering the tube with a stretchable base cloth, the core covered with the base cloth is separated from the mold, and the end portion of the base cloth is fixed to the base cloth fixing portion formed in the mold. Further, the core coated with the tube and the base cloth is detached from the mold to dip it into the synthetic resin, or the synthetic resin is applied to the synthetic resin by an arbitrary means such as spray coating or brush coating while being mounted on the mold. And impregnate all the molds consisting of the plurality of split molds,
A hollow molded body is manufactured by injecting air into the core to expand the tube covered with the core and pressing the stretchable base cloth against the wall surface of the mold to cure it. And a method for producing a hollow molded article. 【請求項２】野球クラブ、ミット類の形状を有し且つ、
複数個の割型よりなる金型と、該金型を組み合わせて形
成する空隙部の形状に略相似し、空気排出孔を設けた中
子を端部を担う金型である割型に着脱自在に装着し、該
中子にチューブを被覆すると共に、該チューブを被覆し
た中子を金型より離脱し、該チューブの端部を前記金型
の端部に形成したチューブ固定部に固定し、次に該チュ
ーブに伸縮自在の基布を被覆した後、該基布を被覆した
中子を金型より離脱し、前記基布の端部を前記金型に形
成した基布固定部に固定し、更に前記チューブ及び基布
を被覆した前記中子を、金型より離脱して合成樹脂にデ
ィピングするか、乃至は金型に装着したままで、スプレ
ー塗布、刷毛塗り等の任意手段で合成樹脂を含浸させる
と共に、前記複数個の割型よりなる金型すべてを圧締
し、前記中子に空気を注入して、前記中子に被覆したチ
ューブを膨脹せしめ、前記伸縮自在の基布を前記金型の
壁面に押圧し硬化させて中空成形の野球グラブ、ミット
類を製造することを特徴とする中空成形体の野球グラ
ブ、ミット類の製造方法。2. A baseball club, having the shape of a mitt, and
A mold consisting of a plurality of split molds and the shape of the void formed by combining the molds are approximately similar, and the core provided with air discharge holes can be detachably attached to the split mold that is the mold that bears the end Mounted on, the core is coated with a tube, the core coated with the tube is removed from the mold, the end of the tube is fixed to the tube fixing portion formed at the end of the mold, Next, after covering the tube with a stretchable base cloth, the core covered with the base cloth is separated from the mold, and the end portion of the base cloth is fixed to the base cloth fixing portion formed in the mold. Further, the core coated with the tube and the base cloth is detached from the mold to dip it into the synthetic resin, or the synthetic resin is applied to the synthetic resin by an arbitrary means such as spray coating or brush coating while being mounted on the mold. Impregnated with, and press all the molds consisting of the above-mentioned split molds, Injecting, the tube covered with the core is expanded, and the expandable base cloth is pressed against the wall surface of the mold to be hardened to produce a hollow-molded baseball glove, a hollow. A method for manufacturing a molded baseball glove and mitt.
JP24523990A 1990-09-14 1990-09-14 Hollow molded body manufacturing method Expired - Lifetime JP2549941B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24523990A JP2549941B2 (en) 1990-09-14 1990-09-14 Hollow molded body manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24523990A JP2549941B2 (en) 1990-09-14 1990-09-14 Hollow molded body manufacturing method

Publications (2)

Publication Number Publication Date
JPH04125124A JPH04125124A (en) 1992-04-24
JP2549941B2 true JP2549941B2 (en) 1996-10-30

Family

ID=17130732

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Application Number Title Priority Date Filing Date
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Country Link
JP (1) JP2549941B2 (en)

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Publication number Priority date Publication date Assignee Title
JP5346716B2 (en) * 2009-07-06 2013-11-20 株式会社アイテック Manufacturing method of vent pipe

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