JPH08439B2 - Injection molding shoe manufacturing method - Google Patents
Injection molding shoe manufacturing methodInfo
- Publication number
- JPH08439B2 JPH08439B2 JP3277167A JP27716791A JPH08439B2 JP H08439 B2 JPH08439 B2 JP H08439B2 JP 3277167 A JP3277167 A JP 3277167A JP 27716791 A JP27716791 A JP 27716791A JP H08439 B2 JPH08439 B2 JP H08439B2
- Authority
- JP
- Japan
- Prior art keywords
- insole
- mold
- injection
- manufacturing
- molded
- 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 - Fee Related
Links
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- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、オープントウサンダル
等のように胛被の一部が切り欠かれている靴の本底を射
出成形により成形してなる射出成形靴を生産性良く製造
する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an injection-molded shoe, such as an open toe sandal, in which the outsole of a shoe having a cutaway portion is molded by injection molding with high productivity. Regarding
【０００２】[0002]
【従来の技術】上記のような胛被の一部が切り欠かれて
いる靴の本底を、該胛被を吊り込んだラストモールドか
らなる雄金型と、ボトムモールド単体あるいはボトムモ
ールド及びサイドモールドからなる雌金型とで構成され
るキャビティー内に、本底成形用樹脂を射出して成形す
る方法として、胛被の切り欠き部からの該樹脂の洩れ等
を防止するために、従来、例えば、次のような方法が提
案されている。 （１）一部が切り欠かれている胛被と、外周縁を延長さ
せた中底とを逢着した袋状体をラストモールドに吊り込
み、本底を射出成形した後に、該中底の外周縁の延長部
を切除する方法（特願昭６２−２８３１９０号，特願平
１−１２６９０２号明細書参照）、（２）雄金型と雌金
型との当接部分に硬度差を設けておき、雄金型に一部が
切り欠かれている胛被と中底とを逢着した袋状体を吊り
込んで、雌金型に適合させた際に、両金型の上記の当接
部分でキャビティーを密閉させて、本底を射出成形する
方法（特願昭６３−１１５０１号，特願平１−１８５２
０１明細書参照）、（３）一部が切り欠かれた胛被下周
縁端と中底外周縁との固定箇所に、胛被よりも硬質の補
強材を取り付け、本底を射出成形する方法（特願平２−
１６２０５９号明細書参照）、等が提案されている。2. Description of the Related Art A male mold made of a last mold in which the upper cover is hung, and a male mold made of a last mold in which the lower cover is suspended, and a bottom mold alone or a bottom mold and a side mold. As a method of injecting and molding a bottom molding resin into a cavity composed of a female mold made of a mold, in order to prevent the resin from leaking from the cutout portion of the cover, etc. For example, the following method has been proposed. (1) A bag-shaped body, in which a cover with a part cut away and an insole having an extended outer peripheral edge is fitted, is hung on the last mold, and the outsole is injection-molded, and then the outside of the insole A method of cutting off the extended portion of the peripheral edge (refer to Japanese Patent Application No. 62-283190 and Japanese Patent Application No. 1-126902), (2) Providing a hardness difference in the contact portion between the male mold and the female mold. When the bag-shaped body, in which a male cover and a midsole, which are partially cut out, are attached to each other, is hung and is fitted to a female mold, the above-mentioned contacting parts of both molds are suspended. Method for injection molding the outsole by sealing the cavity with (Japanese Patent Application No. 63-11501, Japanese Patent Application No. 1-1852).
01 specification), (3) A method of injection-molding the outsole by attaching a reinforcing material that is harder than the undercover to the fixing points of the lower peripheral edge of the undercover and the outer peripheral edge of the insole that are partially cut away. (Patent application 2-
No. 162059), etc. have been proposed.
【０００３】これらの先提案の方法によれば、いずれ
も、射出した本底成形用樹脂が上記の胛被の切り欠き部
から洩れたり、あるいは該切り欠き部にバリが成形され
る等の成形不良を生じることなく、従って本底成形用樹
脂のロス分を多くすることなく、本底を成形することが
できる。According to these previously proposed methods, in either case, the injected outsole molding resin leaks from the notch of the above-mentioned cover, or a burr is formed in the notch. It is possible to mold the outsole without causing defects and thus without increasing loss of the outsole molding resin.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記の
（１）〜（３）の先提案の方法においては、それぞれ次
のような問題がある。 （１）の方法の場合： 中底の延長部を本底の射出成形後に切除する工程を必
要とし、生産能率が低下する。 一部が切り欠かれている胛被と外周縁を延長させた中
底とを逢着した袋状体を吊り込んだラストモールドを、
ボトムモールド及びサイドモールドに適合させる際に、
中底の延長部が、弛んだり、キャビティー内に巻き込ま
れる等により、中底にシワが入ったり、あるいはキャビ
ティー内への本底成形用樹脂の射出洩れが生じることが
あり、生産歩留りを低下させることがある。 （２）の方法の場合： 金型を製造する上での手間が掛かる。 雄金型と雌金型とを適合させる際に、精度の微調整を
必要とし、作業能率が低下する。 金型の共用性がなく、設備上のロスがある。 （３）の方法の場合：一部が切り欠かれた胛被下周縁端
と中底外周縁との固定箇所に取り付けられる胛被よりも
硬質の補強材は、あくまでも、ラストモールド，ボトム
モールド，サイドモールドを適合させる際の補助材であ
り、胛被あるいは中底自体の基本部材にはなり得ず、従
ってこの補助材分の材料コストが掛かり、靴のコストア
ップを招く。However, the previously proposed methods (1) to (3) have the following problems, respectively. In the case of the method (1): The step of cutting the extension of the insole after the injection molding of the outsole is required, and the production efficiency is reduced. A last mold that hangs a bag-shaped body that is fitted with a cover that is partially cut out and an insole that extends the outer peripheral edge,
When adapting to the bottom mold and side mold,
If the extension of the insole loosens or gets caught in the cavity, wrinkles may form in the insole, or injection leakage of the resin for molding the outsole into the cavity may occur. It may decrease. In the case of the method (2): It takes time and effort to manufacture the mold. When the male mold and the female mold are fitted together, fine adjustment of accuracy is required and work efficiency is reduced. There is no sharing of molds and there is a loss in equipment. In the case of the method of (3): the reinforcing material which is harder than the armor cover, which is attached to the fixing portion between the lower peripheral edge of the armor cover and the outer peripheral edge of the insole which are partially cut out, is the last mold, the bottom mold, It is an auxiliary material when adapting the side mold, and cannot be a basic member of the cover or the insole itself, so that the material cost for this auxiliary material is increased and the cost of the shoe is increased.
【０００５】本発明は、以上のような問題を解決すると
共に、以上の先提案の方法が有している利点（本底の成
形不良がなく、本底成形用樹脂のロス分が少ない）が没
却されない、胛被の一部が切り欠かれている射出成形靴
の製造方法を提供することを目的とする。The present invention solves the above problems and has the advantages of the above-mentioned method proposed previously (there is no molding defect of the bottom and the loss of the resin for molding the bottom is small). An injection-molded shoe that is not sunk and has a cutaway part of the scabbard
It aims at providing the manufacturing method of .
【０００６】[0006]
【課題を解決するための手段】本発明者等は、上記目的
を達成するために、検討を重ねた結果、 中底を、ある程度の厚みのあるものとし、該中底の側
面にボトムモールド単体あるいはボトムモールド及びサ
イドモールドからなる雌金型を適合（嵌合）させて、中
底と雌金型とで構成されるキャビティー内に本底成形用
樹脂を射出すれば、前述した（１）〜（３）の方法の問
題が一切解消されること、 一方、最近、足の健康上の問題から、本底の接足面側
を人の足裏の形状に似せた言わゆるアナトミー構造とし
たものが市場に出回るようになって来ており、このアナ
トミー構造を本底の接足面側に設けるのではなく、上記
の厚みのある中底の接足面側に設ければ、オープント
ウサンダル等のように胛被の一部が切り欠かれている靴
であっても、アナトミー構造のものが容易に射出成形す
ることができること、等の知見を得た。Means for Solving the Problems As a result of repeated studies to achieve the above object, the inventors of the present invention have determined that the insole has a certain thickness, and the bottom mold alone is provided on the side surface of the insole. Alternatively, by fitting (fitting) a female mold composed of a bottom mold and a side mold and injecting the resin for molding the bottom into the cavity formed by the inner bottom and the female mold, the above-mentioned (1) ~ The problem of the method of (3) is solved at all. On the other hand, recently, from the problem of foot health, the foot contact side of the outsole has a so-called anatomical structure that resembles the shape of a person's sole. Things are now on the market, and if this anatomy structure is not provided on the foot contact surface side of the outsole, but rather on the foot contact surface side of the above-mentioned thick midsole, open toe sandals, etc. Even if the shoes have a cutaway part like That can be one of Anatomy structure is readily injection molded to obtain a knowledge of the equivalent.
【０００７】本発明は、上記の知見に基づいてなされた
もので、（１）胛被の一部が切り欠かれている靴の本底
が射出成形により成形されてなる射出成形靴の製造方法
であって、前記胛被をラストモールドからなる雄金型に
嵌装した後、該胛被に厚みのある中底を固定するか、あ
るいは前記胛被と前記中底とを固定したものを、ラスト
モールドからなる雄金型に嵌装するステップ、前記中底
の外周側面の適宜位置に、ボトムモールド単体又はボト
ムモールド及びサイドモールドからなる雌金型の外周の
上縁を適合させるステップ、前記中底及び雌金型から構
成されるキャビティー内に本底成形用樹脂を射出するス
テップ、からなることを特徴とする射出成形靴の製造方
法、を要旨とする。また、本発明の射出成形靴の製造方
法においては、（２）中底の底面（接足面側とは反対側
面）に中底より硬質の材料製の層を設けること、（３）
中底の接足面をアナトミー構造とすること、（４）中底
の外周側面の胛被との固定部に胛被の厚さに応じた凹部
を設けること、をも特徴とする。The present invention has been made based on the above findings. (1) A method for manufacturing an injection-molded shoe in which the outsole of a shoe with a part of the cover covered by a notch is molded by injection molding. That is, after fitting the armor cover to a male mold made of a last mold, a thick insole is fixed to the armor cover, or one in which the armor cover and the insole are fixed, The step of fitting into a male mold made of a last mold, the step of fitting the upper edge of the outer circumference of the bottom mold alone or the female mold composed of a bottom mold and a side mold to an appropriate position on the outer peripheral side surface of the insole, A method for manufacturing an injection-molded shoe, comprising the steps of injecting a resin for molding a bottom sole into a cavity formed of a sole and a female mold. Also, a method of manufacturing the injection-molded shoe of the present invention
In the method , (2) a layer made of a material harder than the insole is provided on the bottom surface of the insole (the side opposite to the foot contact side), (3)
To the contact foot surface of the insole and anatomy structure, and also characterized in that, to provide a recess corresponding to the thickness of the胛被the fixed part of the胛被the outer peripheral side surface of the insole (4).
【０００８】[0008]
【作用】本発明の製造方法では、オープントウサンダル
等のように胛被の一部が切り欠かれている靴の中底を厚
みのあるものとし、この厚みのある中底の外周側面の適
宜位置に、射出成形による本底の外周側面の上縁が位置
している射出成形靴を製造することができる。本発明の
製造方法では、本底を射出成形する際に、上記の厚みの
ある中底が、本底成形用樹脂の射出用のキャビティーを
構成する一要素となるため、胛被の一部が切り欠かれて
いても、該切り欠き部から、本底成形用樹脂が、中底の
接足面上に洩れ込んだり、また該切り欠き部に該樹脂の
バリカ成形される等の成形不良は生じない。In the manufacturing method of the present invention, an insole such as an open toe sandal, in which a part of the cover is notched, is made thick, and the outer periphery of the thick insole is appropriately positioned. In addition, it is possible to manufacture an injection-molded shoe in which the upper edge of the outer peripheral side surface of the outsole is located by injection molding . In the production method of the present invention, when injection molding the outsole, the insole with the above thickness, because it is one factor that constitutes the cavity for injection of the outsole molding resin, one胛被Even if the portion is notched, the resin for molding the bottom may leak from the notch onto the foot contact surface of the insole, or the resin may be molded in the notch by a breaker. No defects will occur.
【０００９】また、本発明の製造方法では、上記のよう
に、厚みのある中底がキャビティーの一構成要素となる
ため、中底の材質の特に柔軟度（弾力）、あるいは本底
成形用樹脂の射出圧によっては、中底のみで該射出圧に
耐え得ず、キャビティーの形状を変形させ、ときにはキ
ャビティーの密閉状態が不良となる場合もある。このよ
うな場合を考慮して、本発明の製造方法では、該中底の
底面に、該中底より硬質の材料製の層が取り付られる。
この層が、上記のような射出圧に充分に耐え得る強度を
発現し、キャビティーの形状安定化を図り、延いては上
記樹脂の射出洩れを防止する。Further, in the manufacturing method of the present invention, since the thick insole serves as a component of the cavity as described above, the flexibility of the material of the insole (elasticity), or for forming the outsole. Depending on the injection pressure of the resin, the injection pressure may not be able to withstand only the insole and the shape of the cavity may be deformed, and the sealed state of the cavity may sometimes become defective. In consideration of such a case, in the manufacturing method of the present invention, a layer made of a material harder than the insole is attached to the bottom surface of the insole.
This layer exerts sufficient strength to withstand the injection pressure as described above, stabilizes the shape of the cavity, and eventually prevents injection leakage of the resin.
【００１０】更に、本発明の製造方法では、上記のよう
に中底を厚みのあるものとするため、従来は本底の接足
面にしか成形することができなかったアナトミー構造
を、中底の接足面に成形することができる。このアナト
ミー構造を有する中底は、別途、例えば、射出成形ある
いはプレス成形等で成形することができるため、本発明
の製造方法では、オープントウサンダル等のように胛被
の一部が切り欠かれている靴であっても、アナトミー構
造が容易に実現可能となる。そして、本発明の製造方法
では、従来のようにラストモールドの底面形状をアナト
ミー構造にする必要が必ずしもなく、ラストモールドを
他の構造，デザイン等の射出成形靴のラストモールドと
の共用することが可能となる。Further, in the manufacturing method of the present invention, since the insole has a thickness as described above, the anatomical structure which could be formed only on the foot-contacting surface of the outsole in the related art has a middle bottom. Can be molded on the foot contact surface. Midsole having this anatomy structure, separately, for example, it is possible to mold by injection molding or press molding or the like, in the manufacturing method of the present invention, by cutting a part of胛被as such open-toe sandal An anatomical structure can be easily realized even with a pair of shoes. In the manufacturing method of the present invention, the bottom shape of the last mold does not necessarily have to be an anatomical structure as in the conventional case, and the last mold is different from the last mold of an injection-molded shoe having another structure, design, or the like. It becomes possible to share.
【００１１】しかも、本発明の製造方法では、厚みのあ
る中底の外周側面の胛被との固定部に、該胛被の厚さに
応じた凹部を設けておけば、該胛被を該凹部に固定する
ことで中底外周側面の段差を無くすことができる。以下
に、本発明の製造方法の作用を、詳細に説明する。Further, in the manufacturing method of the present invention, if a concave portion corresponding to the thickness of the cover is provided in the fixing portion of the outer peripheral side surface of the thick insole to the cover, the cover is covered with the recess. By fixing it in the recess, it is possible to eliminate the step on the outer peripheral side surface of the insole. The operation of the manufacturing method of the present invention will be described in detail below.
【００１２】本発明の製造方法では、良好な足当たりを
確保する上で本来的に適度な柔軟性（弾力性）を有して
いる中底をキャビティーの一構成要素とするため、キャ
ビティーの密閉状態が良好となり、本底成形用樹脂の中
底接足面上への洩れ込みや、該樹脂によるバリの成形等
の成形不良が生じ難い。In the manufacturing method of the present invention, the insole originally having a proper flexibility (elasticity) in order to secure a good foot contact is used as one component of the cavity. The sealing condition is good, and it is unlikely that molding defects such as leakage of the resin for molding the main bottom onto the inboard contact surface of the bottom and molding of burrs by the resin will occur.
【００１３】また、本発明の製造方法では、上述したよ
うに、中底より硬質の材料製の層が底面に取り付られた
中底を使用することにより、射出圧に充分に耐え得る強
度を中底に保持させることができる。Further, in the manufacturing method of the present invention, as described above, by using the insole in which the layer made of a material harder than the insole is attached to the bottom surface, the strength capable of sufficiently withstanding the injection pressure is obtained. Can be held on the insole.
【００１４】更に、接足面がアナトミー構造を有する中
底を使用することにより、アナトミー構造であってかつ
胛被の一部が切り欠かかれている靴の本底の射出成形が
容易となると共に、底面をアナトミー構造としたラスト
モールドの使用の必要性が必ずしもなくなり、雌金型は
勿論、ラストモールドをも他の射出成形靴のモールドと
共用することができる。Further, by using the insole having the anatomical structure on the foot contact surface, the injection molding of the outsole of the shoe having the anatomical structure and having a partly cut off the scabbard is facilitated. It is not always necessary to use the last mold having the anatomical structure on the bottom, and the last mold can be used not only with the female mold but also with the mold of other injection-molded shoes.
【００１５】加えて、本発明の製造方法において、上述
のように、中底の外周側面の胛被との固定部に、該胛被
の厚さに応じた凹部を設けておけば、中底と胛被との固
定部が無段差となり、中底と雌金型との接触（嵌合）が
良好になるため、上記した成形不良が一層生じ難くな
る。In addition, in the manufacturing method of the present invention, as described above, if the concave portion corresponding to the thickness of the cover is provided in the fixing portion of the outer peripheral side surface of the insole to the cover, Since there is no step in the fixing portion between the inner cover and the outer cover, and the contact (fitting) between the insole and the female mold is good, the above-mentioned molding failure is further unlikely to occur.
【００１６】[0016]
【実施例】図１は、本発明の製造方法により製造される
靴の一例を示す概略説明図である。図１において、１は
爪先部及び踵部において切り欠かれている言わゆるオー
プントウサンダルの胛被を示し、踵部はバックバンド胛
被１１として構成している。２は厚みのある中底で、該
中底２の外周側面の適宜位置（本例では、中央よりやや
下部）に、射出成形による本底３の上縁が位置してい
る。FIG. 1 is manufactured by the manufacturing method of the present invention.
It is a schematic explanatory drawing which shows an example of shoes . In FIG. 1, reference numeral 1 denotes a cover of a so-called open toe sandal which is cut out at a toe and a heel, and the heel is configured as a back band cover 11. Reference numeral 2 denotes a thick insole, and an upper edge of the insole 3 formed by injection molding is located at an appropriate position on the outer peripheral side surface of the insole 2 (in this example, slightly below the center).
【００１７】上記の中底２は、図２（Ａ）の概略平面
図、同図（Ｂ）の概略側面図、同図（Ｃ）の概略断面図
に示すように、接足面２１においてアナトミー構造をな
しており、外周側面２２の胛被１との固定部には胛被１
の厚さに応じた凹部２２１を有している。この凹部２２
１は、上記のように胛被１の厚さにより設定されるが、
通常は、１〜４．５ｍｍ程度の範囲内で選定される。ま
た、中底２の厚さＳは、本底３を射出成形する際の雌金
型の上縁（嵌合部）が当接され圧迫されるに充分な寸法
が必要であり、通常は、６〜１２ｍｍ程度の範囲内で選
定される。As shown in the schematic plan view of FIG. 2A, the schematic side view of FIG. 2B, and the schematic cross-sectional view of FIG. 2C, the insole 2 has an anatomy on the foot contact surface 21. It has a structure, and the outer cover 22 is fixed to the outer cover 1 with the cover 1
Has a concave portion 221 corresponding to the thickness of. This recess 22
1 is set by the thickness of the cover 1 as described above,
Usually, it is selected within the range of about 1 to 4.5 mm. Further, the thickness S of the insole 2 needs to have a dimension sufficient for the upper edge (fitting portion) of the female die in the injection molding of the outsole 3 to come into contact with and be pressed. It is selected within the range of 6 to 12 mm.
【００１８】更に、中底２の底面には、該中底２の材料
より硬質の材料（例えば、硬質ボール紙，プラスチッ
ク，グラスファイバー，合成皮革，天然皮革等で、本例
では、硬質ボール紙）製の層２３が（本例では接着剤に
より）一体に取り付けられている。中底２の材料として
は、ポリウレタン発泡体，ＥＶＡ（エチレン−ビニルア
セテート）発泡体，ポリエチレン発泡体，ゴムスポンジ
等のように、適度の柔軟性（弾力性）を有する発泡体材
質が用いられる。中底２の柔軟性（弾力性）は、本発明
の製造方法による靴の履用者層によって種々のものが適
宜選択できるが、通常は、ダロメータ（ＤＵＲＯＭＥＴ
ＥＲ Ｃタイプ）による硬度が４０〜１００°程度の範
囲内にあるものが好ましい（本例では、５０°のものを
使用した）。なお、上記の層２３の中底２底面への取り
付け手段は、本例の接着剤によるものに限らず、例え
ば、中底２の射出成形又はプレス成形の際に、成形型に
該層２３をセットしておき、中底２の成形と同時に中底
２底面に取り付ける手段等、適宜の手段が採用できる。Further, the bottom surface of the insole 2 is made of a material harder than the material of the insole 2 (for example, hard cardboard, plastic, glass fiber, synthetic leather, natural leather, etc., in this example, hard cardboard). ) Layer 23 is attached together (in this example with an adhesive). As a material for the insole 2, a foam material having appropriate flexibility (elasticity) such as polyurethane foam, EVA (ethylene-vinyl acetate) foam, polyethylene foam, and rubber sponge is used. The flexibility (elasticity) of the insole 2 can be appropriately selected from various ones depending on the wearer layer of the shoe according to the manufacturing method of the present invention, but is usually a durometer (DUROMET).
It is preferable that the hardness according to the ERC type) is within the range of about 40 to 100 ° (in this example, the hardness of 50 ° was used). The means for attaching the layer 23 to the bottom surface of the insole 2 is not limited to the adhesive of this example, and, for example, when the insole 2 is injection-molded or press-molded, the layer 23 is attached to a molding die. Appropriate means, such as a means for setting and setting and attaching to the bottom surface of the insole 2 simultaneously with the molding of the insole 2, can be adopted.
【００１９】そして、中底２の接足面側から外周側面２
２に亘って、中底布２４により接着被覆しており、中底
本体２の露出を避けて、足当たりを良好にすると共に、
中底本体２の欠損，摩耗による欠落等を防ぎ、かつ中底
本体２の強度の向上、及び外観上のデザイン向上を図っ
ている。中底布２４としては、布帛，メリヤス，パイル
布，合成皮革，合成レザー，天然皮革，天然レザー等が
用いられる。Then, from the foot contact side of the insole 2 to the outer peripheral side surface 2
2 is adhesively coated with the insole cloth 24 to avoid exposing the insole main body 2 to improve the foot contact,
The insole body 2 is prevented from being damaged or broken due to wear, and the strength of the insole body 2 is improved and the design of the appearance is improved. As the insole cloth 24, cloth, knit, pile cloth, synthetic leather, synthetic leather, natural leather, natural leather or the like is used.
【００２０】射出成形による本底３は、後述する本発明
の製造方法に沿って成形することができる。本底３の材
料としては、発泡又は非発泡のポリウレタン，ポリ塩化
ビニル，熱可塑性ゴム，ラバー等が使用できる。The outsole 3 formed by injection molding can be molded according to the manufacturing method of the present invention described later. As the material of the outsole 3, foamed or non-foamed polyurethane, polyvinyl chloride, thermoplastic rubber, rubber or the like can be used.
【００２１】次に、本発明の製造方法の一実施例を図３
にのっとり説明する。図３（Ａ）は概略側面図、同図
（Ｂ）は同図（Ａ）のＡ−Ａ′線の概略断面図である。
先ず、第１のステップにおいて、上述したバックバンド
１１付きの胛被１を、ラストモールド４に嵌装し、図２
（Ａ）〜（Ｃ）に示した中底布２４により被覆され硬質
材製層２３が一体に取り付けられた中底２を、該胛被
１，１１の下周縁内側と該硬質材製層２３の底面とを
（本例では接着剤により）固定する。この固定は、中底
２の外周側面２２に設けられた凹部２２１に、胛被１，
１１の内側を接触させて、該凹部２２１の底面にて行
う。これにより、中底２の外周側面２２と胛被１，１１
の下周側面とは、段差のない面一の連続面をなす。な
お、胛被１，１１と中底２とを固定した後、ラストモー
ルド４に嵌装させてもよい。また、胛被１，１１と中底
２との固定手段も、本例の接着剤に限らず、縫合，高周
波融着，その他適宜の手段が採用できる。Next, one embodiment of the manufacturing method of the present invention is shown in FIG.
I will explain to you. 3A is a schematic side view, and FIG. 3B is a schematic sectional view taken along the line AA ′ in FIG.
First, in the first step, the cover 1 with the back band 11 described above is fitted to the last mold 4,
The insole 2 covered with the insole cloth 24 shown in (A) to (C) and integrally attached with the hard material layer 23 is used as the inner bottom edge of the coverings 1 and 11 and the hard material layer 23. And the bottom surface (in this example, with an adhesive). This fixing is carried out in the concave portion 221 provided on the outer peripheral side surface 22 of the insole 2 by covering the cover 1,
The inside of 11 is brought into contact with the bottom surface of the concave portion 221. As a result, the outer peripheral side surface 22 of the insole 2 and the coverings 1, 11
The lower peripheral side surface forms a flush continuous surface without steps. In addition, after fixing the hoods 1 and 11 and the insole 2, the last mold 4 may be fitted. Further, the fixing means for fixing the coverings 1 and 11 and the insole 2 is not limited to the adhesive of this example, but suturing, high frequency fusion, and other appropriate means can be adopted.
【００２２】次いで、第２のステップにおいて、上記の
胛被１，１１及び中底２を嵌装したラストモールド４の
下方に、本例では、ボトムモールド５とサイドモールド
６とからなる雌金型をセットする。このとき、サイドモ
ールド６の外周の上縁６１を、本例では、中底２のほぼ
中凹部よりやや下部に適合させる。このようにして、本
底形成用樹脂の射出用キャビティー７が、中底２，ボト
ムモールド５，サイドモールド６により構成される。こ
のキャビティー７は、中底２の柔軟性（弾力性），中底
２の凹部２２１による胛被１，１１との固定部の面一な
連続面により良好な密閉状態となる。Then, in a second step, below the last mold 4 fitted with the above-mentioned cover 1 and 11 and the insole 2, in this example, a female mold comprising a bottom mold 5 and a side mold 6 is formed. Set. At this time, the upper edge 61 of the outer periphery of the side mold 6 is made to fit slightly below the approximately middle recess of the insole 2 in this example. In this way, the injection cavity 7 for the resin for forming the bottom is formed of the middle bottom 2, the bottom mold 5, and the side mold 6. The cavity 7 is in a good sealed state due to the flexibility (elasticity) of the insole 2 and the continuous surface flush with the fixing portion of the recess 221 of the insole 2 with the coverings 1 and 11.
【００２３】そして、第３のステップにおいて、上記の
良好な密閉状態のキャビティー７内に、上述した本底３
の材料（射出成形用の組成にしたもの）を射出口８から
射出する。このとき、キャビティー７の一構成要素であ
る柔軟な中底２の底面に取り付けられている硬質材料製
層２３が、射出圧による柔軟な中底２の変形を防止し
て、キャビティー７内の形状安定化と、本底材料の射出
洩れ防止とを図る。これにより、キャビティー７内に本
底３が成形され、この本底３は、射出成形と同時に、中
底２の外周側面２２のほぼ下半分部及び脚被１，１１と
一体に結合される。この後、ボトムモールド５，サイド
モールド６を外し、ラストモールド４から本底３が一体
に連結されている中底２及び胛被１，１１を外せば、図
１に示した靴が得られる。Then, in a third step, the above-mentioned outsole 3 is placed in the cavity 7 in the above-mentioned good sealed state.
The material (having the composition for injection molding) is injected from the injection port 8. At this time, the hard material layer 23 attached to the bottom surface of the flexible insole 2 which is one component of the cavity 7 prevents the flexible insole 2 from being deformed by the injection pressure, and the inside of the cavity 7 is prevented. To stabilize the shape of and to prevent injection leakage of outsole material. As a result, the outsole 3 is molded in the cavity 7, and at the same time as the injection molding, the outsole 3 is integrally coupled with the lower half portion of the outer peripheral side surface 22 of the insole 2 and the leg covers 1, 11. . After that, the bottom mold 5 and the side mold 6 are removed, and the insole 2 and the covers 1, 11 to which the outsole 3 is integrally connected are removed from the last mold 4 to obtain the shoe shown in FIG.
【００２４】なお、以上の実施例は、雌金型として、ボ
トムモールドとサイドモールドとが分かれているものを
使用したが、ボトムモールドとサイドモールドとが一体
となっているものを使用することもでき、この場合の操
作態様は以上の実施例と同様である。但し、脱型を容易
にするために、例えば、本底３の形状を接地面側を接足
面側（中底２側）に比してやや小さくする。In the above-mentioned embodiment, the female mold has the bottom mold and the side mold separated, but it is also possible to use the one in which the bottom mold and the side mold are integrated. However, the operation mode in this case is the same as that of the above embodiment. However, in order to facilitate mold release, for example, the shape of the outsole 3 is made slightly smaller on the ground contact surface side than on the foot contact surface side (the insole 2 side).
【００２５】[0025]
【発明の効果】以上詳述したように、本発明の製造方法
によれば、次のような効果を奏することができる。 （１）柔軟性（弾力性）のある中底をキャビティーの一
構成要素とするため、キャビティーの密閉状態が良好と
なり、胛被の切り欠き部からの本底成形用樹脂の洩れ込
みや、該部でのバリの成形等の成形不良が生じることは
なく、生産歩留りが向上する。 （２）柔軟性（弾力性）のある中底の底面に硬質材料製
の層を取り付けることにより、本底成形樹脂射出時のキ
ャビティーの形状を安定化させ、また密閉状態を良好に
保持することができ、（１）の効果を一層向上させる。 （３）中底の外周側面の胛被との固定部に胛被の厚さに
応じた凹部を設けることにより、中底外周側面が無段差
となって中底と雌金型との接触（嵌合）が良好になり、
（１）の効果をなお一層向上させる。 （４）中底の接足面をアナトミー構造とすることができ
るため、胛被の一部が切り欠かかれている靴であって
も、アナトミー構造のものを容易に射出成形することが
でき、かつラストモールドの底面形状をアナトミー構造
にする必要がなく、ボトムモールドやサイドモールドと
共に、ラストモールドをも他の構造，デザイン等の射出
成形靴のラストモールドと共用することができる。 （５） ラストモールドとボトムモールド，サイドモー
ルドの適合が容易で、作業能率が向上する。 （６）特別な材料が不要であり、コストダウンに繋が
る。As described in detail above, according to the manufacturing method of the present invention, the following effects can be obtained. (1) Since the insole having flexibility (elasticity) is used as one component of the cavity, the closed state of the cavity is good, and the resin for forming the bottom is not easily leaked from the notch of the cover. In addition, molding defects such as molding of burrs at this portion do not occur, and the production yield is improved. (2) By attaching a layer made of a hard material to the bottom surface of a flexible (elastic) insole, the shape of the cavity at the time of injection of the bottom molding resin is stabilized, and the sealed state is maintained well. It is possible to further improve the effect of (1). (3) By providing a concave portion on the outer peripheral side surface of the insole that is fixed to the cover, the outer peripheral side surface of the insole has no step and the contact between the insole and the female die ( Mating) is better,
The effect of (1) is further improved. (4) Since the foot contact surface of the insole can have an anatomy structure, even if the shoe has a part of the armor cover cut out, the anatomy structure can be easily injection-molded, In addition, the bottom shape of the last mold does not need to be an anatomy structure, and the last mold can be shared with the bottom mold and the side mold as well as the last mold of the injection-molded shoe having another structure or design. (5) It is easy to adapt the last mold, bottom mold, and side mold to improve work efficiency. (6) No special material is required, which leads to cost reduction.
【図１】本発明の製造方法により製造される射出成形靴
の一例を説明するための概略側面図である。FIG. 1 is an injection-molded shoe manufactured by the manufacturing method of the present invention.
It is a schematic side view for demonstrating an example .
【図２】図１に示す射出成形靴の中底を説明するための
図で、（Ａ）が概略平面図、（Ｂ）が概略側面図、
（Ｃ）が概略断面図である。2A and 2B are views for explaining the insole of the injection-molded shoe shown in FIG. 1, in which FIG. 2A is a schematic plan view, and FIG.
(C) is a schematic sectional drawing.
【図３】本発明の製造方法の一実施例を説明するための
図で、（Ａ）が概略断面図、（Ｂ）が（Ａ）のＡ−Ａ′
線の概略断面図である。3A and 3B are views for explaining one embodiment of the manufacturing method of the present invention, in which FIG. 3A is a schematic sectional view and FIG.
It is a schematic sectional drawing of a line.
１ 一部が切り欠かれている胛被 １１ バックバンド ２ 中底 ３ 本底 ２１ 中底の接足面 ２３ 中底の底面に取り付けられた中底より硬質な材
料製層 ２２１ 中底の外周側面に設けられた凹部 ４ ラストモールド ５ ボトムモールド ６ サイドモールド ７ キャビティー1 Partly cutaway 11 Back band 2 Insole 3 Inner sole 21 Foot contact surface of insole 23 Material layer harder than the insole attached to the bottom of the insole 221 Outer side of the insole Recesses 4 Last mold 5 Bottom mold 6 Side mold 7 Cavity
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ａ４３Ｂ 23/02 １０１ Ｚ Ａ４３Ｄ 25/06 86/00 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location A43B 23/02 101 Z A43D 25/06 86/00
Claims (4)
が射出成形により成形されてなる射出成形靴の製造方法
であって、 前記胛被をラストモールドからなる雄金型に嵌装した
後、該胛被に厚みのある中底を固定するか、あるいは前
記胛被と前記中底とを固定したものを、ラストモールド
からなる雄金型に嵌装するステップ、 前記中底の外周側面の適宜位置に、ボトムモールド単体
又はボトムモールド及びサイドモールドからなる雌金型
の外周の上縁を適合させるステップ、 前記中底及び雌金型から構成されるキャビティー内に本
底成形用樹脂を射出するステップ、 からなることを特徴とする射出成形靴の製造方法。1. A method of manufacturing an injection-molded shoe in which the outsole of a shoe in which a part of the cover is cut out is molded by injection molding, wherein the cover is a male mold made of a last mold. After fitting, a step of fixing a thick insole to the jacket or fixing the jacket and the insole to a male mold made of a last mold, the insole Adapting the upper edge of the outer periphery of the bottom mold alone or the female mold consisting of the bottom mold and the side mold to an appropriate position on the outer peripheral side surface of the bottom mold, the main bottom molding in the cavity composed of the insole and the female mold. A method for manufacturing an injection-molded shoe, comprising the step of injecting a resin for use.
取り付けた中底を使用することを特徴とする請求項１に
記載の射出成形靴の製造方法。2. The method of manufacturing an injection-molded shoe according to claim 1 , wherein an insole having a layer made of a material harder than the insole attached to the bottom is used.
使用することを特徴とする請求項１又は２に記載の射出
成形靴の製造方法。3. The method for manufacturing an injection-molded shoe according to claim 1 , wherein an insole having an anatomy structure on the foot contact surface is used.
厚さに応じた凹部を設けた中底を使用することを特徴と
する請求項１〜３のいずれかに記載の射出成形靴の製造
方法。The fixed portion of the胛被of wherein the outer peripheral side surface, according to claim 1, characterized in that the use of insole provided with recess in accordance with the該胛the thickness Method of manufacturing injection-molded shoes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3277167A JPH08439B2 (en) | 1991-09-28 | 1991-09-28 | Injection molding shoe manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3277167A JPH08439B2 (en) | 1991-09-28 | 1991-09-28 | Injection molding shoe manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0584101A JPH0584101A (en) | 1993-04-06 |
| JPH08439B2 true JPH08439B2 (en) | 1996-01-10 |
Family
ID=17579739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3277167A Expired - Fee Related JPH08439B2 (en) | 1991-09-28 | 1991-09-28 | Injection molding shoe manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08439B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2456250A (en) * | 2006-10-10 | 2009-07-15 | Chen Chuang-Chuan | Mold for making shoes |
| WO2019195912A1 (en) * | 2018-04-11 | 2019-10-17 | Sandra Tremblay | Supportive footwear with an adjustable medial arch support |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59211402A (en) * | 1983-05-16 | 1984-11-30 | モリト株式会社 | Method for forming recessed place for embedding end parts ofback band and upper band to insole and product |
| JP2864493B2 (en) * | 1987-03-31 | 1999-03-03 | 株式会社ブリヂストン | Insole for shoes |
-
1991
- 1991-09-28 JP JP3277167A patent/JPH08439B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0584101A (en) | 1993-04-06 |
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