JPH07256790A - Injection molding of shoes - Google Patents
Injection molding of shoesInfo
- Publication number
- JPH07256790A JPH07256790A JP6074443A JP7444394A JPH07256790A JP H07256790 A JPH07256790 A JP H07256790A JP 6074443 A JP6074443 A JP 6074443A JP 7444394 A JP7444394 A JP 7444394A JP H07256790 A JPH07256790 A JP H07256790A
- Authority
- JP
- Japan
- Prior art keywords
- shoe
- mold
- instep
- insole
- shoe sole
- 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.)
- Granted
Links
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は靴の射出成形法に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe injection molding method.
【０００２】[0002]
【従来の技術】従来、特公平５−３６０４３号によっ
て、胛被と踵部に切欠部を設けた中底を袋状に縫着した
胛部、いわゆるカルフォルニア胛を、踵成形部の底面に
凸部を形成した靴型に中底の切欠部に凸部を挿入して吊
込み、これにサイドモ−ルドとボトムモ−ルドを組合
せ、常法によって靴底を射出成形するとともに、靴底の
踵部の内側にクッション材挿入用の凹部を形成する、射
出成形靴の製造方法が提案されている。しかしながらこ
の方法による場合、カルフォルニア胛の中底の踵部に切
欠部が設けられているため、胛被と中底との縫着作業を
踵部で中断しなければならず縫着作業が阻害され縫着作
業の能率低下が著しく、しかも胛部を靴型に吊込む際、
踵部において胛被の下周辺部が引き伸ばされて胛部の踵
部を靴型に正確に密着させることができず、胛被の踵部
に皺が発生したり、靴底を成形し、完成された靴を脱型
した後、靴の踵部が変形したりする欠点があった。この
ため発明者は、胛被と切欠部を設けていない中底を袋状
に縫着した従来の胛部を、底部外周辺に段差部を残して
突出部を形成した靴型に吊込み、常法によって靴底を胛
部下面に一体に成形するとともに、靴型の底部に形成さ
れた突起によって、靴内にクッション材挿入用の凹部を
有する靴の射出成形法について種々検討したが、靴型の
外周下面に突起によって形成された段差部に、胛被の下
周縁から中底の外周辺にかけて胛部を靴型に密着させる
ことができず、靴内にラストの底面に形成された突起に
正確に対応した形状のクッション材挿入用の凹部を形成
することができず、靴成形後、クッション材挿入段階で
クッション材の形状を修正する必要があり、修正作業が
煩雑でありコスト高になる欠点があった。2. Description of the Related Art Conventionally, according to Japanese Examined Patent Publication No. Hei 5-36043, a so-called calf, which is a bag-like sewn insole and a midsole having a notch in the heel, is formed on the bottom of the heel-forming part. Insert the convex part in the notch part of the insole and hang it in the shoe mold that formed the part, combine this with side mold and bottom mold, injection mold the shoe sole by the usual method, and also heel part of the sole A method of manufacturing an injection-molded shoe has been proposed in which a recess for inserting a cushion material is formed inside the shoe. However, in the case of this method, since the notch is provided in the heel part of the insole of the California crepe, the sewing work between the hem cover and the insole must be interrupted at the heel part, and the sewing work is hindered. The efficiency of the sewing work is remarkably reduced, and when suspending the crepe part in the shoe mold,
The lower peripheral part of the heel cover is stretched in the heel part, and the heel part of the heel part cannot be brought into close contact with the shoe mold accurately, and wrinkles occur on the heel part of the heel cover and the sole is molded to complete. There is a defect that the heel of the shoe is deformed after the released shoe is released from the mold. For this reason, the inventor hangs a conventional lace part, which is a bag-shaped sewn insole that is not provided with a cover and a notch part, and is hung in a shoe mold in which a protruding portion is formed leaving a step around the outside of the bottom, We have variously studied injection molding methods for shoes that have a shoe bottom integrally formed on the lower surface of the sulcus by a conventional method, and a projection formed on the bottom of the shoe mold has a recess for inserting a cushion material in the shoe. The step formed on the bottom surface of the outer periphery of the mold by the protrusion cannot be brought into close contact with the shoe mold from the lower peripheral edge of the cover to the outer periphery of the insole, and the protrusion formed on the bottom surface of the last in the shoe. Since it is not possible to form a recess for inserting the cushioning material in a shape that accurately corresponds to the above, it is necessary to correct the shape of the cushioning material at the cushioning material insertion stage after the shoe is molded, and the correction work is complicated and costly. There was a drawback.
【０００３】[0003]
【発明が解決しようとする課題】この発明は、従来のカ
ルフォルニアタイプの胛部を使用することによって、胛
被と中底の縫着作業を能率的に行うことができ、靴型に
対する胛被の吊込みが簡単で、靴内に靴型の底部に形成
された突部形状に正確に対応したクッション材挿入用の
凹部を簡単に成形するとともに、靴成形後の踵部の変形
がなく、外観良好で耐久性に優れた靴を提供しようとす
るものである。SUMMARY OF THE INVENTION According to the present invention, by using a conventional California type crepe part, the sewing work of the crepe cover and the insole can be efficiently performed, and the crepe cover of the shoe mold is Easy to hang, the recess for cushion material insertion that corresponds exactly to the shape of the protrusion formed on the bottom of the shoe mold in the shoe is easily molded, and the heel part does not deform after molding the shoe It is intended to provide shoes which are good and have excellent durability.
【０００４】[0004]
【課題を解決するための手段】以下、この発明の実施状
態を示す図面によって説明すれば、この発明は胛被１１
と中底１２とを袋状に縫着１０し、しかも胛被１１の下
周辺から中底１２の外周辺にかけて投錨孔１０１．１０
１…を形成した胛部１を、底部外周辺に段差部２１を残
して凸部２２を形成した靴型２に、胛部１に形成された
前記の投錨孔１０１．１０１…を靴型の段差部２１に対
応させて吊込み、この胛部１を吊込んだ靴型２とサイド
モ−ルド３，３とボトムモ−ルド４とを組み合わせて、
胛部１の下面に形成された靴底成形キャビティ０に靴底
成形材を射出導入して、靴底５を胛部１の底面に一体に
成形するとともに、靴底成形材の一部を前記の投錨孔１
０１．１０１…を通して靴底の段差部２１に充填して、
靴の内周下縁部に前記の縫着１０部を被覆して、靴底５
と一体な補強梁６と該補強梁６によって取りまかれ、し
かも靴型２の底部に形成された凸部２２の形状に対応し
たクッション材挿入用の凹部７とを靴内に形成すること
を特徴とする靴の射出成形法を発明の要旨とするもので
ある。The present invention will now be described with reference to the drawings showing the embodiment of the present invention.
And the insole 12 are sewn in a bag shape 10, and the anchor holes 101.10 extend from the lower periphery of the cover 11 to the outer periphery of the insole 12.
1 is formed in the shoe part 2 in which a convex portion 22 is formed while leaving a step portion 21 around the outer periphery of the bottom, and the anchor holes 101.101 formed in the crease part 1 are formed in the shoe mold 2 It is hung in correspondence with the step portion 21, and the shoe mold 2 in which the bulging portion 1 is hung, the side molds 3, 3 and the bottom mold 4 are combined,
The shoe sole molding material is injected and introduced into the shoe sole molding cavity 0 formed on the lower surface of the sac part 1 to integrally mold the shoe sole 5 on the bottom surface of the sac part 1, and a part of the shoe sole molding material is Anchorage hole 1
01.101 ... through the step 21 of the shoe sole,
The bottom edge of the inner circumference of the shoe is covered with 10 parts of the sewing, and
The reinforcement beam 6 integrated with the reinforcement beam 6 and the concave portion 7 for cushion material insertion corresponding to the shape of the convex portion 22 formed by the reinforcement beam 6 and formed on the bottom of the shoe mold 2 are formed in the shoe. The gist of the invention is the injection molding method of a characteristic shoe.
【０００５】この発明において胛被１１と中底１２と
は、天然乃至合成繊維、皮革、ゴム、合成樹脂シ−トま
たはこれらの貼り合せ材で裁断構成され、常法によって
裁断され、袋状に縫着１０して胛部１として準備される
ものである。そして胛被１１の下周辺から中底１２の外
周辺にかけて形成される投錨孔１０１．１０１…は、胛
被１１または中底１２を裁断する工程で打ち抜き形成し
ておけば便利である。この投錨孔１０１．１０１…は、
胛部１を靴型２に吊込んだ際、靴型２の底部外周辺に形
成された段差部２１に対応した位置に合せて、胛被１１
の下周辺または中底の外周辺、あるいはそれらの双方に
一定の間隔をおいて形成されている。具体的にこの投錨
孔１０１．１０１…は、射出成形される靴底の材料、射
出温度、射出圧、靴底成形キャビティ０に対する射出ゲ
−ト０１の位置によっても相違が、射出ゲ−ト０１．０
１…がボトムモ−ルドの中央部に設けられ、靴底成形材
料が塩化ビニルのような熱可塑性の合成樹脂、熱可塑性
ゴムであり、射出ノズルの温度が１５０℃〜１９０℃で
射出圧が１０kg／cm2〜３０kg／cm2である場合、直径２
mm〜１０mmの円形の孔を２．５mm〜３０mm間隔で中底の
外周辺部に設けておけば充分である。またこの発明にお
いて、上記と同様な射出条件で射出ゲ−ト０１．０１…
がボトムモ−ルド４とサイドモ−ルド３．３との摺り合
わせ面に形成されている場合は、胛被１１の下周辺に直
径１mm〜５mmの円形の孔を２．５mm〜３０mm間隔で設け
ておけば充分である。In the present invention, the cover 11 and the insole 12 are made of natural or synthetic fibers, leather, rubber, synthetic resin sheet or a laminated material thereof, and are cut by a conventional method to form a bag. It is to be sewn 10 and is prepared as the crepe part 1. It is convenient if the anchor holes 101.101 formed from the lower periphery of the cover 11 to the outer periphery of the insole 12 are punched and formed in the step of cutting the cover 11 or the insole 12. These anchor holes 101.101 ...
When the hem part 1 is suspended in the shoe mold 2, the hem cover 11 is aligned with the position corresponding to the step portion 21 formed around the bottom of the shoe mold 2.
It is formed at a constant interval on the lower periphery, the outer periphery of the insole, or both of them. Specifically, the anchor holes 101.101 ... Are different depending on the material of the shoe sole to be injection molded, the injection temperature, the injection pressure, and the position of the injection gate 01 with respect to the shoe sole molding cavity 0. .0
1 ... is provided in the center of the bottom mold, and the sole molding material is a thermoplastic synthetic resin such as vinyl chloride or thermoplastic rubber, the injection nozzle temperature is 150 ° C to 190 ° C, and the injection pressure is 10 kg. / Cm 2 to 30 kg / cm 2 diameter 2
It is sufficient to provide circular holes of mm to 10 mm at intervals of 2.5 mm to 30 mm on the outer peripheral portion of the insole. In the present invention, the injection gate 01.01 ...
Is formed on the sliding surface of the bottom mold 4 and the side mold 3.3, circular holes with a diameter of 1 mm to 5 mm are provided at 2.5 mm to 30 mm intervals around the bottom of the cover 11. It's enough.
【０００６】この発明において靴型２の底部に形成され
る凸部２２は、踵部から爪先部にかけて同一の高さで、
その側壁（段差部の側壁）２１１を靴型の底面（段差部
の上壁）２０に対してほぼ垂直に突出させておけば、凸
部２２に対応して靴内に踵部から爪先部にかけて一定深
さの凹部７を形成出来るので、凹部７に挿入するクッシ
ョン材８として一定の厚みを有する発泡シ−ト、フェル
等を打ち抜き裁断等で簡単に大量に低コストで準備でき
るので便利である。In the present invention, the convex portion 22 formed on the bottom of the shoe last 2 has the same height from the heel portion to the toe portion,
If the side wall (side wall of the stepped portion) 211 is projected substantially perpendicularly to the bottom surface (top wall of the stepped portion) 20 of the shoe mold, the side wall (the upper wall of the stepped portion) 20 can be protruded into the shoe from the heel to the toe. Since the concave portion 7 having a constant depth can be formed, it is convenient that a cushion sheet 8 having a constant thickness can be prepared as a cushion material 8 to be inserted into the concave portion 7 by punching and cutting in a large amount at a low cost. .
【０００７】この発明において靴底成形材としたは、塩
化ビニル、熱可塑性のゴム、液ポリウレタン、通常の天
然乃至合成ゴム等通常の充実性乃至発泡性靴底の射出成
形に使用されているものが使用される。In the present invention, the shoe sole molding material includes vinyl chloride, thermoplastic rubber, liquid polyurethane, ordinary natural or synthetic rubber and the like which is used for injection molding of ordinary solid or foamable shoe soles. Is used.
【０００８】以上によって準備された材料を使用し、ま
ず胛部１を常法によって靴型２に吊込み、胛被１１の下
周辺から中底１２の外周辺にかけて形成された投錨孔１
０１．１０１…を靴型２の段差部２１に対応させて、常
法によって胛部１を吊込んだ靴型２とサイドモ−ルド
３，３とボトムモ−ルド４とを組み合わせ、胛部１の下
面に形成された靴底成形キャビティ０に靴底成形材を射
出導入すれば、靴底成形キャビティ０に導入された靴底
成形材の一部が射出圧によって胛部１に形成された投錨
孔１０１．１０１…を投錨して段差部２１に充填され
て、靴底５と一体な補強梁６が靴内に形成される。靴底
成形キャビティ０に靴底成形材を射出導入する際、靴底
成形キャビティ０に開口する射出ゲ−ト０１をボトムモ
−ルドとサイドモ−ルドとの摺り合わせ面またはボトム
モ−ルドの外周上面等、段差部２１と対応する位置に開
口させておけば、靴底成形材を投錨孔１０１．１０１…
を介して段差部２１によりスム−ズに投錨充填できるの
で便利である。Using the materials prepared as described above, first, the limb part 1 is hung in the shoe mold 2 by a conventional method, and the anchor hole 1 is formed from the lower periphery of the crevice 11 to the outer periphery of the insole 12.
01.101 ... is made to correspond to the step portion 21 of the shoe mold 2, and the shoe mold 2 in which the limb part 1 is hung by a conventional method is combined with the side molds 3, 3 and the bottom mold 4 to By injecting the shoe sole molding material into the shoe sole molding cavity 0 formed on the lower surface, a part of the shoe sole molding material introduced into the shoe sole molding cavity 0 is an anchor hole formed in the scabbard portion 1 by injection pressure. 101.101 are anchored and filled in the step portion 21, and the reinforcing beam 6 integral with the shoe sole 5 is formed in the shoe. When injecting the shoe sole molding material into the shoe sole molding cavity 0, the injection gate 01 opening to the shoe sole molding cavity 0 is fitted to the sliding surface of the bottom mold and the side mold or the outer peripheral upper surface of the bottom mold, etc. , If it is opened at a position corresponding to the step portion 21, the shoe sole molding material is anchored into the anchor holes 101.101 ...
It is convenient because the step portion 21 can be used for anchoring and filling in the smooths via the.
【０００９】[0009]
【発明の作用効果】この発明は以上のように、胛被１１
と中底１２とを袋状に縫着１０した胛部１を靴型２に吊
込むため、段差部２１以外では胛部１を靴型２に正確に
密着でき、靴底成形後靴が変形したり、胛被１１の踵部
下周辺に皺が発生したりして外観が低下することがな
い。また靴型２の下周辺に形成された段差部２１には、
靴底５成形時に靴底成形材の一部を胛被１１の下周辺か
ら中底１２の外周辺にかけて形成された投錨孔１０１．
１０１…を投錨させて、胛被１１と中底１２との縫着１
０部を被覆して補強梁６を形成するので、縫着１０部が
著しく強化され、しかも靴底５と補強梁６とが胛部１に
形成された投錨孔１０１．１０１…を介して投錨一本化
されているので、胛部１と靴底５との接合強度に優れ耐
久性に優れた靴を提供できる。また靴内に補強梁６に取
り囲まれ、しかも凸部２２の形状に正確に合致した凹部
７を成形できるので、クッション材８の準備がコスト安
でこれを使用時に凹部７に簡単に挿入して完成された靴
を使用することができる。そして胛被１１と中底１２と
は踵部で中断することなく、従来同様連続して袋状に縫
着１０できるので縫製作業が能率的である。As described above, the present invention has the following advantages.
Since the hem part 1 in which the bag and the insole 12 are sewn in a bag shape 10 is hung on the shoe mold 2, the hem part 1 can be accurately adhered to the shoe mold 2 except for the step portion 21, and the shoe is deformed after the sole molding. The outer appearance does not deteriorate due to the occurrence of wrinkles or wrinkles around the bottom of the heel of the scabbard 11. Further, in the step portion 21 formed around the bottom of the shoe mold 2,
Anchor holes 101 formed at the time of molding the shoe sole 5 by forming a part of the shoe sole molding material from the lower periphery of the cover 11 to the outer periphery of the insole 11.
Anchor 101 ... and sew on the cover 11 and insole 12 1
Since the reinforcing beam 6 is formed by covering 0 part, the sewn part 10 is remarkably strengthened, and the shoe sole 5 and the reinforcing beam 6 are anchored through the anchor holes 101.101 ... Formed in the crease part 1. Since it is unified, it is possible to provide a shoe that has excellent joint strength between the hem 1 and the shoe sole 5 and excellent durability. In addition, since the recess 7 surrounded by the reinforcing beam 6 can be formed in the shoe and the shape of the projection 22 can be accurately matched, the cushion material 8 can be easily prepared by inserting it into the recess 7 at a low cost. Completed shoes can be used. Further, the covering 11 and the insole 12 can be continuously sewn in the shape of a bag 10 without interruption at the heel portion, so that the sewing operation is efficient.
【図１】この発明の靴の射出状態を示す短手方向におけ
る要部断面図である。FIG. 1 is a cross-sectional view of main parts in a lateral direction showing an injection state of a shoe of the present invention.
【図２】この発明によって成形された靴の短手方向にお
ける要部断面図である。FIG. 2 is a sectional view of a main part in the lateral direction of a shoe molded according to the present invention.
１．胛部 １０…縫着 １０１…投錨孔 １１…胛被 １２…中底 ２．靴型 ２１…段差部 ２２…凸部 ３．サイドモ−ルド ４．ボトムモ−ルド ５．靴底 ６．補強梁 ７．凹部 ８．クッション材 ０．靴底成形キャビティ 1.胛 部 10… Sewn cloth 101… Anchoring hole 11… Violet cover 12… Insole 2. Shoe type 21 ... step 22 ... convex 3. Side mold 4. Bottom mold 5. Sole 6. Reinforcement beam 7. Recessed portion 8. Cushion material 0. Shoe sole molding cavity
Claims (1)
し、しかも胛被１１の下周辺から中底１２の外周辺にか
けて投錨孔１０１．１０１…を形成した胛部１を、底部
外周辺に段差部２１を残して凸部２２を形成した靴型２
に、胛部１に形成された前記の投錨孔１０１．１０１…
を靴型の段差部２１に対応させて吊込み、この胛部１を
吊込んだ靴型２とサイドモ−ルド３，３とボトムモ−ル
ド４とを組み合わせて、胛部１の下面に形成された靴底
成形キャビティ０に靴底成形材を射出導入して、靴底５
を胛部１の底面に一体に成形するとともに、靴底成形材
の一部を前記の投錨孔１０１．１０１…を通して靴底の
段差部２１に充填して、靴の内周下縁部に前記の縫着１
０部を被覆して、靴底５と一体な補強梁６と該補強梁６
によって取りまかれ、しかも靴型２の底部に形成された
凸部２２の形状に対応したクッション材挿入用の凹部７
とを靴内に形成することを特徴とする靴の射出成形法。1. A sewn bag-like sewn cover 11 and insole 12 in a bag shape.
Further, the shoe mold 2 in which the crease 1 having the anchor holes 101.101 ... Formed from the lower periphery of the hood 11 to the outer periphery of the insole 12 is formed, and the convex portion 22 is formed leaving the step portion 21 around the outer periphery of the bottom.
In addition, the anchor holes 101.101 formed in the rear part 1 ...
Is formed corresponding to the stepped portion 21 of the shoe mold, and the shoe mold 2 in which the skirt portion 1 is hung, the side molds 3, 3 and the bottom mold 4 are combined to form a lower surface of the skirt part 1. Injecting the shoe sole molding material into the shoe sole molding cavity 0, the shoe sole 5
Is integrally formed on the bottom surface of the bottom part 1, and a part of the shoe sole molding material is filled into the step portion 21 of the shoe sole through the anchor holes 101.101 ... Sewing 1
Reinforcing beam 6 which covers 0 part and is integrated with the sole 5 and the reinforcing beam 6
The concave portion 7 for inserting the cushion material corresponding to the shape of the convex portion 22 formed on the bottom of the shoe last 2
An injection molding method for shoes, characterized in that and are formed in the shoes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6074443A JP2759750B2 (en) | 1994-03-18 | 1994-03-18 | Injection molding method for shoes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6074443A JP2759750B2 (en) | 1994-03-18 | 1994-03-18 | Injection molding method for shoes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07256790A true JPH07256790A (en) | 1995-10-09 |
| JP2759750B2 JP2759750B2 (en) | 1998-05-28 |
Family
ID=13547387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6074443A Expired - Lifetime JP2759750B2 (en) | 1994-03-18 | 1994-03-18 | Injection molding method for shoes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2759750B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114571768A (en) * | 2020-12-02 | 2022-06-03 | 伊科斯克有限公司 | Footwear molding system for direct injection production of footwear |
-
1994
- 1994-03-18 JP JP6074443A patent/JP2759750B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114571768A (en) * | 2020-12-02 | 2022-06-03 | 伊科斯克有限公司 | Footwear molding system for direct injection production of footwear |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2759750B2 (en) | 1998-05-28 |
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