JPH04183401A - Injection molding for multicolor shoe sole - Google Patents
Injection molding for multicolor shoe soleInfo
- Publication number
- JPH04183401A JPH04183401A JP2315495A JP31549590A JPH04183401A JP H04183401 A JPH04183401 A JP H04183401A JP 2315495 A JP2315495 A JP 2315495A JP 31549590 A JP31549590 A JP 31549590A JP H04183401 A JPH04183401 A JP H04183401A
- Authority
- JP
- Japan
- Prior art keywords
- sole
- molding
- bottom mold
- mold
- ground
- 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
- 238000001746 injection moulding Methods 0.000 title claims abstract description 7
- 238000000465 moulding Methods 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims description 5
- 239000002893 slag Substances 0.000 abstract description 8
- 239000012778 molding material Substances 0.000 abstract description 7
- 238000001125 extrusion Methods 0.000 abstract 3
- 238000010276 construction Methods 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
- 241000237858 Gastropoda Species 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は多色靴底の射出成形法に関するものである。[Detailed description of the invention] (Industrial application field) This invention relates to a method for injection molding multicolored shoe soles.
（従来の技術）
近年多色靴底が賞月されているが、この多色靴底の成形
法において、まずダミーラストとボトムモールドを使用
して接地底を成形した後、ダミーラストを取りはずして
接地底を成形保持したボトムモールドに、サイドモール
ドと胛被を吊込んだラストをセットし、接地底の上面に
ミツドソールを重層成形する方法を採用していた。(Prior art) Multi-colored shoe soles have been gaining popularity in recent years, but in the molding method for this multi-colored shoe sole, first a dummy last and a bottom mold are used to form a ground-contact sole, and then the dummy last is removed. A bottom mold that holds the ground-contacting sole is set with a last that suspends the side molds and the cover, and a midsole is layered on top of the ground-contacting sole.
しかしながらこの方法による場合、接地底成形後、ボト
ムモールドからダミーラストを取り外す際、接地底がダ
ミーラストの底面に密着してボトムモールドの成形面か
ら浮き上がり、ボトムモールドに保持された接地底の上
面にミツドソールを成形する際、接地底とボトムモール
ドの成形面との密着性が不完全で、ミツドソール成形材
がボトムモールドの成形面に侵入し、接地底の側面乃至
下面にパリとして付着し、接地底とミツドソールの境界
が不鮮明で複雑に入り込んだものとなり、靴底の外観を
著しく低下させていた。However, with this method, when the dummy last is removed from the bottom mold after forming the ground bottom, the ground bottom sticks to the bottom of the dummy last and rises from the molding surface of the bottom mold, causing the top surface of the ground bottom held by the bottom mold to When molding the midsole, the adhesion between the ground sole and the molding surface of the bottom mold is incomplete, and the molding material of the midsole invades the molding surface of the bottom mold and adheres to the side or lower surface of the ground sole. The boundary between the midsole and the midsole became indistinct and complicated, significantly deteriorating the appearance of the sole.
（発明が解決しようとする課題）
接地底成形後、ボトムモールドからダミーラストを取り
外す際、接地底とボトムモールドの成形面との密着性を
改善することによって、接地底とミツドソールの境界が
鮮明で外観良好な靴底を提供しようとするものである。(Problem to be solved by the invention) When removing the dummy last from the bottom mold after forming the ground-contact sole, by improving the adhesion between the ground-contact sole and the molded surface of the bottom mold, the boundary between the ground-contact sole and the midsole is clear. The purpose is to provide a shoe sole with a good appearance.
（課題を解決するための手段）
以下この発明をその実施状態を示す図面によって説明す
れば、この発明はダミーラスト１とボトムモールド２と
を使用して接地底を成形した後、ミツドソールを成形す
る多色靴底の成形方法において、ボトムモールド２とし
てフランジ部２１にその上面２１１に開口されたはみ出
し溝２２と、該はみ出し溝２２から接地底成形キャビテ
ィｏ１の側面（接地底成形面の側部）に連通し、接地底
成形キャビティ０１の開口部で狭窄された流入孔２５と
を形成したものを使用することを特徴とする多色靴底の
射出成形法を発明の要旨とするものである。(Means for Solving the Problems) The present invention will be described below with reference to drawings showing its implementation state.The present invention uses a dummy last 1 and a bottom mold 2 to mold a ground-contact sole, and then molds a midsole. In the method of molding a multicolored shoe sole, the bottom mold 2 includes a protruding groove 22 opened on the upper surface 211 of the flange portion 21, and a side surface of the ground-contact sole molding cavity o1 from the protruding groove 22 (side part of the ground-contact sole molding surface). The gist of the invention is an injection molding method for a multi-colored shoe sole, which is characterized by using a molded shoe sole having an inlet hole 25 that communicates with the ground sole molding cavity 01 and is narrowed at the opening of the ground-contact sole molding cavity 01.
第１図に示すように、ボトムモールド２には凹状の接地
底成形面２０が形成され、その底部には、滑り止め意匠
形成用の凹凸意匠２０１．２０１・・・が、その外周に
は、フランジ部２１が形成され、このフランジ部２１は
ミツドソール成形時にサイドモールド３．３との嵌合部
を形成するよう設計されている。そしてフランジ部２１
には、その上面２１１に開口されたはみ出し溝２２が形
成されている。As shown in FIG. 1, a concave ground-contact bottom molding surface 20 is formed on the bottom mold 2, and on the bottom thereof, uneven designs 201, 201, etc. for forming an anti-slip design are formed, and on the outer periphery thereof, A flange portion 21 is formed, which is designed to form a fit with the side mold 3.3 during molding of the midsole. and flange part 21
A protruding groove 22 is formed in the upper surface 211 of the holder.
このはみ出し溝２２は、任意形状に形成されていてよい
が、その上面に向かって拡大された断面形状に形成して
おけば、靴底形成後、フランジ部上面２１１側から、は
み出し溝２２に形成されたスラグａを簡単に除去できる
ので便利である。このはみ出し溝２２は、フランジ部２
１に一連に周設されていてもよいし、一定の間隔をおい
て部分的に独立した複数の溝２２．２２’ ・・・とじ
て形成されていてもよい。そしてこの発明において、は
み出し溝２２から、接地底成形キャビティ０１の側面に
連通して設けられる流入孔２５は、第１図に示すように
フランジ部にトンネル状に設けられていてもよいし、第
４図に示すようにフランジ部上面に開口された溝として
形成されていてもよい。This protruding groove 22 may be formed in any shape, but if it is formed in a cross-sectional shape that is enlarged toward the upper surface, the protruding groove 22 can be formed from the flange portion upper surface 211 side after the sole is formed. This is convenient because the slag a can be easily removed. This protruding groove 22 is located at the flange portion 2.
1, or a plurality of partially independent grooves 22, 22'... may be formed at regular intervals. In this invention, the inflow hole 25 which is provided in communication with the side surface of the grounded bottom molding cavity 01 from the protruding groove 22 may be provided in a tunnel shape in the flange portion as shown in FIG. As shown in FIG. 4, it may be formed as a groove opened on the upper surface of the flange portion.
そしてこの流入孔２５は、はみ出し溝２２に向かって適
宜数設けられてよい。An appropriate number of inflow holes 25 may be provided toward the protruding groove 22.
この流入孔２５をはみ呂し溝２２に向かって拡大された
断面形状に形成しておけば、スラグａと一体に流入孔２
５中で形成されたスラグｂを、スラグａ除去時に同時に
簡単に引き抜き除去できるので便利である。If this inflow hole 25 is formed in a cross-sectional shape that is enlarged toward the groove 22, the inflow hole 25 can be integrated with the slag a.
This is convenient because the slag b formed in step 5 can be easily pulled out and removed at the same time as slag a is removed.
多色靴底の射出成形に当たっては、上記のボトムモール
ド２とダミーラスト１を嵌合し、ボトムモールド２とダ
ミーラスト１とによって区画形成された接地底成形キャ
ビティＯ１に接地底成形材を射出導入すれば、接地底成
形材の一部が流入孔２５を通して、はみ出し溝２２に充
填され、流入孔２５とはみ出し溝２２とによって、接地
底と一体にスラグｂとスラグａが形成され、接地底ｇが
スラブｂとスラグａによって、ボトムモールドの接地底
成形面２０に保持される。For injection molding of multi-colored shoe soles, the bottom mold 2 and the dummy last 1 are fitted together, and a ground sole molding material is injected into the ground sole molding cavity O1 defined by the bottom mold 2 and the dummy last 1. Then, a part of the grounding bottom forming material passes through the inflow hole 25 and fills the protruding groove 22, and the inflow hole 25 and the protruding groove 22 form slug b and slug a integrally with the grounding bottom g. is held on the grounded bottom molding surface 20 of the bottom mold by slab b and slug a.
従って、ダミーラスト１をボトムモールド２から取りは
ずす際、接地底ｇがボトムモールドの接地底成形面２０
から浮き上がったり、剥離されたりすることがない。Therefore, when removing the dummy last 1 from the bottom mold 2, the grounding bottom g is the bottom molding surface 20 of the bottom mold.
It will not lift up or peel off.
このようにして接地底ｇを成形保持したボトムモールド
２を、サイドモールド３と胛被Ｕを被せたラスト４とを
組み立て、接地底の上面にミツドソール成形キャビティ
０２を形成し、このミツドソール成形キャビティ０２に
ミツドソール成形材を射出導入して、ミツドソールｍを
成形するとともに、ミツドソールｍを介して胛被Ｕと接
地底ｇを積層一体化する。The bottom mold 2 with the grounding sole g molded and held in this manner is assembled with the side mold 3 and the last 4 covered with the cover U, and a midsole molding cavity 02 is formed on the upper surface of the grounding sole. A mid-sole molding material is injected into the mold to form a mid-sole m, and the shoe cover U and the ground sole g are laminated and integrated via the mid-sole m.
このようにして胛被Ｕに多色靴底を成形した後、常法に
よりボトムモールド２を降下させサイドモールド３．３
を開放し、ラスト４に被せられた胛被しに一体化された
多色靴底を有する靴を脱型する。このようにして本発明
による多色靴底を備えた靴が得られる。After forming the multicolored sole on the shoe cover U in this way, the bottom mold 2 is lowered by a conventional method and the side mold 3.3 is molded.
is opened, and the shoe having the multicolored sole integrated with the shoe cover placed on the last 4 is removed from the mold. A shoe with a multicolored sole according to the invention is thus obtained.
（発明の効果）
この発明は以上のように構成されているので、ダミーラ
スト１とボトムモールド２を使用して接地底ｇを射出成
形する際、流入孔２５とはみ出し溝２２に、接地底ｇと
一体に形成されるスラグｂとａによって、接地底ｇがボ
トムモールド２に保持されているため、ダミーラストｌ
をボトムモールドから取りはずすサイドモールＩ−’３
．３とラストと取り替える時、接地底ｇがボトムモール
ドの接地底成形面２０から浮き上がったり剥離されたり
することがなく、接地底ｇをボトムモールドの接地底成
形面２０に密着保持した状態でミツドソールを射出成形
できる。(Effects of the Invention) Since the present invention is configured as described above, when injection molding the grounding bottom g using the dummy last 1 and the bottom mold 2, the grounding bottom g Since the grounding bottom g is held on the bottom mold 2 by the slugs b and a formed integrally with the dummy last l
Remove the side molding I-'3 from the bottom molding.
．． 3. When replacing the last with the bottom mold, the grounding sole g is not lifted up or peeled off from the grounding sole molding surface 20 of the bottom mold, and the midsole is held in close contact with the grounding sole molding surface 20 of the bottom mold. Can be injection molded.
従って、ミツドソール成形時に、ミツドソール成形材が
接地底の側面乃至底面にはみ出してパリとして付着する
ことがなく、外観良好な多色靴底が得られる。Therefore, during midsole molding, the midsole molding material does not protrude to the side surface or bottom surface of the ground sole and adhere as flakes, and a multicolored shoe sole with a good appearance can be obtained.
また靴底成形後、ボトムモールド２を降下させ、サイド
モールド３を開放して成形された多色靴底をモールドか
ら脱型する際、流入孔２５がボトムモールドキャビティ
の開口部で狭窄されているため、スラグｂと接地底ｇと
の境界部が狭窄され形成され、この狭窄部よリスラグｂ
と接地底ｇとを簡単に引きちぎることができ、しかもス
ラグａとスラグｂをフランジ部上面２１１から簡単に引
き抜き除去できる。Further, after the sole is molded, when the bottom mold 2 is lowered and the side mold 3 is opened to remove the molded multicolored sole from the mold, the inlet hole 25 is narrowed at the opening of the bottom mold cavity. Therefore, the boundary between the slug b and the ground bottom g is narrowed, and the slag b
and the grounding bottom g can be easily torn off, and the slag a and the slug b can be easily pulled out and removed from the upper surface 211 of the flange portion.
図面は、この発明の実施状態を示すものであり、第１図
は、接地底の成形状態を示す要部断面図であり、第２図
は、ボトムモールドの平面図であり、第３図は、ミツド
ソール成形状態を示す要部断面図であり、第４図は、他
の実施例におけるボトムモールドの要部拡大断面図であ
る。
（符号の説明）
０１、接地底成形キャビティ
０２、ミツドソール成形キャビティ
１、ダミーラスト ２．ボトムモールド２０・
・・接地底成形面 ２０１・・・凹凸意匠２１・
・・フランジ部 ２１１・・・土面２２ （２
２’ ）・・・はみ出し溝
２５・・・流入孔 ３．サイドモールド４
、ラスト
ａ、スラグ ｂ、スラグｇ、接地底
ｍ、ミツドソール上。胛被The drawings show the state of implementation of the present invention; FIG. 1 is a cross-sectional view of essential parts showing the state of molding of the grounded bottom, FIG. 2 is a plan view of the bottom mold, and FIG. FIG. 4 is an enlarged cross-sectional view of a main part of a bottom mold in another embodiment. (Explanation of symbols) 01, ground sole molding cavity 02, midsole molding cavity 1, dummy last 2. Bottom mold 20・
・・Ground bottom molding surface 201 ・Uneven design 21・
...Flange part 211...Soil surface 22 (2
2')...Protruding groove 25...Inflow hole 3. side mold 4
, last a, slug b, slug g, ground bottom
m, on the midsole. parody
Claims (1)
を成形した後、ミッドソールを成形する多色靴底の成形
方法において、ボトムモールド２としてフランジ部２１
にその上面２１１に開口されたはみ出し溝２２と、該は
み出し溝２２から接地底成形キャビティ０１の側面に連
通し、接地底成形キャビティ０１の開口部で狭窄された
流入孔２５とを形成したものを使用することを特徴とす
る多色靴底の射出成形法。In a method for forming a multicolored shoe sole in which a midsole is formed after forming a ground sole using a dummy last 1 and a bottom mold 2, the flange portion 21 is used as the bottom mold 2.
A protruding groove 22 opened on the upper surface 211, and an inflow hole 25 communicating from the protruding groove 22 to the side surface of the grounded bottom molding cavity 01 and narrowed at the opening of the grounded bottom molding cavity 01. The injection molding method of multicolored shoe soles is characterized by using.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2315495A JPH0773894B2 (en) | 1990-11-19 | 1990-11-19 | Injection molding of multicolor soles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2315495A JPH0773894B2 (en) | 1990-11-19 | 1990-11-19 | Injection molding of multicolor soles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04183401A true JPH04183401A (en) | 1992-06-30 |
| JPH0773894B2 JPH0773894B2 (en) | 1995-08-09 |
Family
ID=18066061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2315495A Expired - Lifetime JPH0773894B2 (en) | 1990-11-19 | 1990-11-19 | Injection molding of multicolor soles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0773894B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9205615B2 (en) | 2013-03-01 | 2015-12-08 | Nike, Inc. | Method of forming midsole of two materials |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5530844A (en) * | 1978-08-28 | 1980-03-04 | Hitachi Ltd | Semiconductor device and its manufacturing method |
| JPS58185105A (en) * | 1982-04-23 | 1983-10-28 | アキレス株式会社 | Production of injection molded shoes |
| JPS5935601A (en) * | 1982-08-19 | 1984-02-27 | Kawasaki Steel Corp | Production of atomized steel powder having high compressibility |
| JPH01171503A (en) * | 1987-12-28 | 1989-07-06 | Achilles Corp | Manufacture of uneven design operated sole |
-
1990
- 1990-11-19 JP JP2315495A patent/JPH0773894B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5530844A (en) * | 1978-08-28 | 1980-03-04 | Hitachi Ltd | Semiconductor device and its manufacturing method |
| JPS58185105A (en) * | 1982-04-23 | 1983-10-28 | アキレス株式会社 | Production of injection molded shoes |
| JPS5935601A (en) * | 1982-08-19 | 1984-02-27 | Kawasaki Steel Corp | Production of atomized steel powder having high compressibility |
| JPH01171503A (en) * | 1987-12-28 | 1989-07-06 | Achilles Corp | Manufacture of uneven design operated sole |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9205615B2 (en) | 2013-03-01 | 2015-12-08 | Nike, Inc. | Method of forming midsole of two materials |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0773894B2 (en) | 1995-08-09 |
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