JPH0751331B2 - Method of manufacturing polyurethane injection molded shoes - Google Patents

Method of manufacturing polyurethane injection molded shoes

Info

Publication number
JPH0751331B2
JPH0751331B2 JP61259348A JP25934886A JPH0751331B2 JP H0751331 B2 JPH0751331 B2 JP H0751331B2 JP 61259348 A JP61259348 A JP 61259348A JP 25934886 A JP25934886 A JP 25934886A JP H0751331 B2 JPH0751331 B2 JP H0751331B2
Authority
JP
Japan
Prior art keywords
polyurethane
mold
gate
molding
injection
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
JP61259348A
Other languages
Japanese (ja)
Other versions
JPS63111803A (en
Inventor
幸男 菊地
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.)
Achilles Corp
Original Assignee
Achilles 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 Achilles Corp filed Critical Achilles Corp
Priority to JP61259348A priority Critical patent/JPH0751331B2/en
Publication of JPS63111803A publication Critical patent/JPS63111803A/en
Publication of JPH0751331B2 publication Critical patent/JPH0751331B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【発明の詳細な説明】 (イ) 産業上の利用分野 この発明は、ポリウレタン本底を有する射出成形靴、い
わゆるポリウレタン射出成形靴の製造方法に関する。
TECHNICAL FIELD The present invention relates to an injection-molded shoe having a polyurethane outsole, a so-called polyurethane injection-molded shoe.

(ロ) 従来の技術 従来のポリウレタン本底を有する射出成形靴の製造方法
は、第5図、第6図に示すように一般的にまず甲材
(1)と中底(2)を縫着して成る甲被(3)を金型の
ラストモールド(4)に吊り込ませる。次に、金型のラ
ストモールド(4)、サイドモールド(5)、ボトムモ
ールド(6)を組み合わせることにより形成される成形
空隙部(7)にポリウレタン原液(14)を射出する。ポ
リウレタン原液(14)は、サイドモールド(5)を貫通
し成形空隙部(7)に開口する一つのゲート(15)より
射出され、ボトムモールド(6)上に落下する。ポリウ
レタン原液(14)がボトムモールド(6)に落下すると
ボトムモールド(6)は上昇し、本底形状と同様の狭い
成形空隙部と成り、(第6図)、それと同時にポリウレ
タン原液(14)は発泡、硬化して本底(16)を形成す
る。ポリウレタン原液の射出量は通常、約発泡時空隙部
容積の約50%程度である。
(B) Conventional Technology In the conventional method for manufacturing an injection-molded shoe having a polyurethane outsole, generally, as shown in FIGS. 5 and 6, first, an upper material (1) and an insole (2) are sewn together. The instep cover (3) thus formed is suspended in the last mold (4) of the mold. Next, the polyurethane stock solution (14) is injected into the molding cavity (7) formed by combining the last mold (4), the side mold (5) and the bottom mold (6) of the mold. The undiluted polyurethane solution (14) is injected from one gate (15) penetrating the side mold (5) and opening in the molding cavity (7), and falls onto the bottom mold (6). When the polyurethane stock solution (14) falls into the bottom mold (6), the bottom mold (6) rises to form a narrow molding void similar to the bottom shape (Fig. 6), and at the same time, the polyurethane stock solution (14) Foam and cure to form the outsole (16). The injection amount of the undiluted polyurethane solution is usually about 50% of the volume of the void portion at the time of foaming.

また、ポリウレタン原液の射出力は単位時間当たりの原
液量を変えて行っていた。
Further, the spray output of the polyurethane undiluted solution was performed by changing the undiluted solution amount per unit time.

(ハ) 発明が解決しようとする問題点 金型の成形空隙部に射出されるポリウレタン原液は、射
出後、発泡しつつ硬化して本底を形成する。しかし、ポ
リウレタン原液は、本底成形空隙部の容積の約50%であ
り、ボトムモールドの一部の上に落下して発泡し始め、
発泡開始時の粘度が数万CPU単位の高粘度であるため、
成形硬化時に細い意匠や鋭角な意匠の形成が出来ず、い
わゆる「カケ」(17)のある本底ができ易いという問題
点があった。
(C) Problems to be Solved by the Invention The polyurethane undiluted solution injected into the molding cavity of the mold is cured while foaming after injection to form the outsole. However, the polyurethane undiluted solution is about 50% of the volume of the bottom molding void, and falls onto a part of the bottom mold to start foaming,
Since the viscosity at the start of foaming is a high viscosity of tens of thousands of CPU units,
There was a problem that a thin design or a sharp design could not be formed at the time of molding and curing, and a sosole with a so-called "chip" (17) was easily formed.

また、ポリウレタン原液(14)が一つのゲート(15)か
らの射出であり、本底のつま先部や踵部の位置への量の
分配調整がモールド形状やサイズによって難しい為、薄
いつま先部の比重が大きくなってしまうという問題点が
あった。
In addition, the polyurethane undiluted solution (14) is injected from one gate (15), and it is difficult to adjust the distribution of the amount to the toes and heels of the outsole depending on the shape and size of the mold. However, there was a problem that the

(ニ) 問題点を解決するための手段 この発明はポリウレタン射出成形靴の製造方法におい
て、成形空隙部とランナーとを連通するゲートを上下に
複数本形成するとともに、上方のゲートの成形空隙部開
口面積が下方のゲートの成形空隙部開口面積より小に形
成するサイドモールドのランナーからゲートを介して形
成空隙部内にポリウレタン原液を注入し、成形空隙部内
で発泡することで本底を形成することを特徴とするポリ
ウレタン射出成形靴の製造方法を提案することで上述の
問題点を解決する。
(D) Means for Solving the Problems In the method for manufacturing a polyurethane injection-molded shoe according to the present invention, a plurality of gates that communicate the molding void portion and the runner are formed vertically and the molding void portion opening of the upper gate is formed. The area is smaller than the opening area of the molding cavity of the lower gate.The side of the runner of the side mold is used to inject the polyurethane stock solution into the cavity through the gate, and the bottom is formed by foaming in the molding cavity. The above problems are solved by proposing a method for producing a characteristic polyurethane injection-molded shoe.

(ホ) 作用 成形空隙部に開口し、ランナーに連通するゲートを複数
とし、かつ上方のゲートの成形空隙部開口面積を下方の
ゲートの形成空隙部開口面積より小とし、ランナーより
注入されるポリウレタン原液の射出力は単位時間あたり
の吐出量で決まるため、上方の方が強くなり、下方のゲ
ートより遠方位置まで飛び落下する。複数のゲートか
ら、異なった射出力で射出されるポリウレタン原液は、
ボトムモールドのほぼ全表面を濡らすことができ、一ケ
所からの発泡、硬化とならない。
(E) Action Polyurethane injected from the runner, with a plurality of gates that open into the molding cavity and communicate with the runner, and the molding area of the upper gate is smaller than that of the lower gate. Since the spray output of the undiluted solution is determined by the discharge amount per unit time, it becomes stronger in the upper part and jumps and falls from the lower gate to a far position. Polyurethane stock solution injected from different gates with different injection power,
Can wet almost the entire surface of the bottom mold and does not foam or cure from one place.

(ヘ) 実施例 この発明を実施例図面に基づいて説明する。(F) Embodiments The present invention will be described with reference to the drawings.

ポリウレタン本底を有する射出成形靴の製造方法は、ま
ず甲材(1)と中底(2)をおがみ縫いをして甲被
(3)を形成し、次に甲被(3)を金型のラストモール
ド(4)に吊り込む。
The method of manufacturing an injection-molded shoe having a polyurethane outsole is as follows. First, the instep material (1) and the insole (2) are sewn with a stitch to form the instep cover (3), and then the instep cover (3) is molded into a mold. It is suspended in the last mold (4).

金型はラストモールド(4)の他サイドモールド
(5)、ボトムモールド(6)から成り、これらを組み
合わせて形成空隙部(7)を形成する。サイドモールド
(5)(一般的に靴の踵部側のサイドモールド)にラン
ナー(8)を設け、ランナー(8)と成形空隙部(7)
を連通するゲート(9)、(10)を上下に複数本、この
実施例では2本設ける。ゲート(9)、(10)は上方の
ゲート(9)の成形空隙部開口面積が下方のゲート(1
0)の成形空隙部開口面積より小である。この実施例で
は、上方のゲート(9)は直径2.6mmの円形開口部であ
り、その開口面積は5.3mm2、下方のゲート(10)は直径
4.6mmの円形開口部であり、その開口面積は16..6mm2
ある。通常上方のゲート(9)は、開口部が円形の場
合、その直径は1.5〜5.0mm、開口面積は1.8〜19.6mm2
下方のゲート(10)は、開口部が円形の場合、直径は3.
0〜6.0mm、開口面積は7.1〜28.3mm2程度である。各ゲー
ト(9)、(10)の成形空隙部への開口部の形状は円
形、楕円形、多角形等、その靴の大きさ、形状あるいは
ポリウレタン原液の粘度、量等に合わせて選択する。こ
の実施例の下方のゲート(10)は、成形空隙部開口面積
の孔下面をより下方へ広げた路漏斗状に形成している。
この形成により、下方のゲート(10)からのポリウレタ
ン原液は、より近くのボトムモールド(6)上に射出さ
れる。上方のゲート(9)はこの実施例においてはほぼ
ボトムモールド面に対して平行であるが、やや上方へ向
けてもよい。
The mold comprises a side mold (5) and a bottom mold (6) in addition to the last mold (4), and these are combined to form a forming void (7). The runner (8) is provided on the side mold (5) (generally the side mold on the heel side of the shoe), and the runner (8) and the molding void (7) are provided.
A plurality of gates (9) and (10) communicating with each other are provided above and below, in this embodiment, two gates are provided. The gates (9) and (10) have upper openings (9) whose opening area is smaller than that of the gate (1).
It is smaller than the opening area of the molding void of (0). In this example, the upper gate (9) is a circular opening with a diameter of 2.6 mm, its opening area is 5.3 mm 2 , and the lower gate (10) has a diameter of
It is a circular opening of 4.6 mm and its opening area is 16..6 mm 2 . Normally, the upper gate (9) has a circular opening with a diameter of 1.5 to 5.0 mm and an opening area of 1.8 to 19.6 mm 2 ,
The lower gate (10) has a diameter of 3.
The opening area is 0 to 6.0 mm and the opening area is about 7.1 to 28.3 mm 2 . The shape of the opening of each gate (9), (10) to the molding cavity is selected according to the size and shape of the shoe or the viscosity and amount of the polyurethane stock solution, such as a circle, an ellipse, or a polygon. The lower gate (10) of this embodiment is formed in the shape of a passage funnel in which the lower surface of the hole having the opening area of the molding void portion is expanded further downward.
Due to this formation, the undiluted polyurethane solution from the lower gate (10) is injected onto the closer bottom mold (6). The upper gate (9) is approximately parallel to the bottom mold surface in this embodiment, but may be slightly raised.

次にこの金型のランナー(8)よりポリウレタン原液を
ゲート(9)、(10)を通して成形空隙部(7)に射出
する。このとき、上方のゲート(9)より射出するポリ
ウレタン原液(11)は、下方のゲート(10)より射出さ
れるポリウレタン原液(12)より遠方へ飛ぶ。ボトムモ
ールド(6)上の2ケ所にポリウレタン原液(11)、
(12)が位置すると、ボトムモールド(6)は上昇し、
成形空隙部(7)の空隙を狭め本底形状に該当する本底
成形空隙部を形成するとともに、ポリウレタン原液(1
1)、(12)は2ケ所で発泡しつつ硬化していき本底(1
3)を形成する。
Next, the polyurethane stock solution is injected from the mold runner (8) through the gates (9) and (10) into the molding cavity (7). At this time, the undiluted polyurethane solution (11) ejected from the upper gate (9) flies further than the undiluted polyurethane solution (12) ejected from the lower gate (10). Polyurethane stock solution (11) at two locations on the bottom mold (6),
When the (12) is located, the bottom mold (6) rises,
Forming the bottom molding void corresponding to the bottom shape by narrowing the molding void (7), the polyurethane stock solution (1
(1) and (12) are hardened while foaming in two places and the bottom (1
3) to form.

(ト) 発明の効果 したがって、この発明によれば、ポリウレタン本底を有
する射出形成靴の本底の細かい意匠や鋭角の意匠が確実
に形成でき、いわゆるカケ等が発生し難いという効果が
ある。
(G) Effect of the Invention Therefore, according to the present invention, it is possible to reliably form a fine design or an acute-angled design of the outsole of an injection-molded shoe having a polyurethane outsole, and to prevent so-called chipping.

また、2ケ所以上でポリウレタン原液を発泡硬化させる
ため、その2ケ所のポリウレタン原液量を調節でき、踵
部、つま先部等の部位による比重の調整が簡単にでき
る。
Further, since the polyurethane undiluted solution is foamed and cured in two or more places, the amount of the undiluted polyurethane undiluted solution in the two places can be adjusted, and the specific gravity can be easily adjusted by the parts such as the heel and the toes.

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

第1図乃至第4図は、この発明の実施例図面であり、第
1図はポリウレタン射出成形用金型の説明図、第2図は
金型の成形空隙部にポリウレタン原液を射出した工程の
説明図、第3図は金型のボトムフレームを上昇させポリ
ウレタンが発泡硬化する工程の説明図、第4図はゲート
の一部拡大断面図であり、第5図、第6図は従来例であ
り、第5図は金型の成形空隙部にポリウレタン原液を射
出した工程の説明図、第6図は金型のボトムフレームを
上昇させポリウレタンが発泡硬化する工程の説明図であ
る。 (1)……甲材、(2)……中底、(3)……甲被、
(4)……ラストモールド、(5)……サイドモール
ド、(6)……ボトムモールド、(7)……成形空隙
部、(8)……ランナー、(9)……上方のゲート、
(10)……下方のゲート、(11)……上方のゲートより
射出されたポリウレタン原液、(12)……下方のゲート
より射出されたポリウレタン原液。
1 to 4 are drawings of an embodiment of the present invention. FIG. 1 is an explanatory view of a polyurethane injection molding die, and FIG. 2 is a process of injecting a polyurethane stock solution into a molding cavity of the die. Explanatory drawing, FIG. 3 is an explanatory drawing of a process in which polyurethane is foamed and cured by raising the bottom frame of the mold, FIG. 4 is a partially enlarged sectional view of the gate, and FIG. 5 and FIG. 6 are conventional examples. FIG. 5 is an explanatory view of the step of injecting the polyurethane stock solution into the molding cavity of the mold, and FIG. 6 is an explanatory view of the step of raising the bottom frame of the mold to foam and cure the polyurethane. (1) …… Instep material, (2) …… Insole, (3) …… Instep,
(4) …… last mold, (5) …… side mold, (6) …… bottom mold, (7) …… molding void, (8) …… runner, (9) …… upper gate,
(10) …… Lower gate, (11) …… Polyurethane stock solution injected from the upper gate, (12) …… Polyurethane stock solution injected from the lower gate.

───────────────────────────────────────────────────── 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 B29K 105:04 B29L 31:50 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location B29K 105: 04 B29L 31:50

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】ポリウレタン射出成形靴の製造方法におい
て、成形空隙部とランナーとを連通するゲートを上下に
複数本形成するとともに、上方のゲートの形成空隙部開
口面積が下方のゲートの成形空隙部開口面積より小に形
成するサイドモールドのランナーからゲートを介して成
形空隙部内にポリウレタン原液を注入し、成形空隙部内
で発泡することで本底を形成することを特徴とするポリ
ウレタン射出成形靴の製造方法。
1. A method for manufacturing a polyurethane injection-molded shoe, wherein a plurality of gates for communicating a molding void portion and a runner are formed in the upper and lower directions, and an opening area of the upper gate forming void portion is a molding void portion of a lower gate. Manufacture of polyurethane injection-molded shoes characterized by forming a bottom by injecting polyurethane undiluted solution into the molding cavity through a gate from a side mold runner that is smaller than the opening area and foaming in the molding cavity. Method.
JP61259348A 1986-10-30 1986-10-30 Method of manufacturing polyurethane injection molded shoes Expired - Lifetime JPH0751331B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61259348A JPH0751331B2 (en) 1986-10-30 1986-10-30 Method of manufacturing polyurethane injection molded shoes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61259348A JPH0751331B2 (en) 1986-10-30 1986-10-30 Method of manufacturing polyurethane injection molded shoes

Publications (2)

Publication Number Publication Date
JPS63111803A JPS63111803A (en) 1988-05-17
JPH0751331B2 true JPH0751331B2 (en) 1995-06-05

Family

ID=17332860

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61259348A Expired - Lifetime JPH0751331B2 (en) 1986-10-30 1986-10-30 Method of manufacturing polyurethane injection molded shoes

Country Status (1)

Country Link
JP (1) JPH0751331B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2560888B (en) 2017-03-22 2020-04-08 Dyson Technology Ltd Support for a hair care appliance
GB2560889B (en) 2017-03-22 2020-09-23 Dyson Technology Ltd Support for a hair care appliance
US10973283B2 (en) * 2017-06-06 2021-04-13 Puma SE Method for producing a shoe
CN110893692B (en) * 2018-09-13 2022-05-24 德斯马制鞋设备有限公司 Injection molding system with pressure dependent valve
EP3835046A1 (en) 2019-12-13 2021-06-16 DESMA Schuhmaschinen GmbH Method and injection molding system for the direct soling of a multilayered shoe sole

Also Published As

Publication number Publication date
JPS63111803A (en) 1988-05-17

Similar Documents

Publication Publication Date Title
US5667738A (en) Methods for the production of resilient molded heels for boots and shoes
ES8607708A1 (en) Sole construction for footwear.
US5727271A (en) Method for obtaining a shoe
JPH0751331B2 (en) Method of manufacturing polyurethane injection molded shoes
US4198769A (en) Boots of injection molded plastic
US3626611A (en) Cleat plate for golf shoes
US3510968A (en) Shoes and shoemaking methods
US3178496A (en) Injection process
US4255825A (en) Boots of injection molded plastic and process therefor
KR100593415B1 (en) Shoe sole formed from multiple injections and its manufacturing method
KR101909221B1 (en) Manufacture method insole for shoes
US3510912A (en) Mold assemblies for shoe soles
US3452378A (en) Process of making a golf shoe
KR100560372B1 (en) Manufacturing method and shoe sole with functional insert
JPH09109292A (en) Molding die for shoe sole
GB1092136A (en) Improvements in articles of footwear with injection-moulded outsoles of resilient material, and the manufacture thereof
US20240034018A1 (en) Manufacturing process for molded footwear
GB2061172A (en) Process for the production of high-heeled synthetic resin footwear
JPH07507936A (en) Molded footwear with a predetermined shape and its manufacturing method
KR19990062037A (en) Sneaker sole
JPH0130081Y2 (en)
GB1357963A (en) Methods of manufacturing footwear
JPH02136506U (en)
CN114228032A (en) Method for manufacturing multi-component polymer footwear
JPH0724605B2 (en) Injection molding shoe manufacturing method