JPH02122905A - Mold for molding - Google Patents
Mold for moldingInfo
- Publication number
- JPH02122905A JPH02122905A JP63276931A JP27693188A JPH02122905A JP H02122905 A JPH02122905 A JP H02122905A JP 63276931 A JP63276931 A JP 63276931A JP 27693188 A JP27693188 A JP 27693188A JP H02122905 A JPH02122905 A JP H02122905A
- Authority
- JP
- Japan
- Prior art keywords
- molding
- thickness
- foamed
- height
- mold
- 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.)
- Pending
Links
- 238000000465 moulding Methods 0.000 title claims abstract description 36
- 239000006260 foam Substances 0.000 claims description 33
- 239000011550 stock solution Substances 0.000 description 10
- 238000005187 foaming Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 230000002902 bimodal effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
- B29C44/0461—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities by having different chemical compositions in different places, e.g. having different concentrations of foaming agent, feeding one composition after the other
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/08—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles using several expanding or moulding steps
- B29C44/083—Increasing the size of the cavity after a first part has foamed, e.g. substituting one mould part with another
- B29C44/086—Increasing the size of the cavity after a first part has foamed, e.g. substituting one mould part with another and feeding more material into the enlarged cavity
-
- 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
- B29L2031/58—Upholstery or cushions, e.g. vehicle upholstery or interior padding
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression 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〕
本発明は２ノ一異硬度発泡体製品を形成するためのモー
ルド用型罠関し、特に車両シート用クツションに有用な
製品の製造に適したものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application] The present invention relates to mold traps for molds for forming bimodal hardness foam products, and is particularly suitable for manufacturing products useful in vehicle seat cushions. It is something.
従来、自動車のような車両の搭乗者又は重産業機械の可
動部用の安全な支承手段と柔軟、快適なシートを与える
発泡体クツションを製造するのに、捌々の方法が用いら
れてきた。ところで、大部分のこのようなりノション表
造法は、異なるタイプの複数の発泡体および／または異
なる硬度の複数の発泡体を一緒に結合して所望の積層ク
ツシ冒ンを得ることであった。従来、例えば２層の異硬
度の発泡部分からなる発泡体クック！Ｉ／は、高弾性を
有する硬いまたは半可撓性発泡体になる第１組成物で部
分的に満たし、この組成物をクリーム状とし、発泡させ
、脹れ上がらせた後、低弾性を有する柔軟な発泡体にな
る第２組成物を型に加えることにより、製造していた（
ｔ￥ｆ公昭６２−３７９９８号公報）。In the past, sophisticated methods have been used to produce foam cushions that provide a safe support and flexible, comfortable seat for occupants of vehicles such as automobiles or moving parts of heavy industrial machinery. However, most such lining methods have involved bonding together foams of different types and/or foams of different hardness to obtain the desired laminated shoe foam. Conventionally, for example, foam cook! consists of two layers of foamed parts with different hardness. I/ is partially filled with a first composition which becomes a rigid or semi-flexible foam with high elasticity and which, after creaming, foaming and swelling, has a low elasticity. It was manufactured by adding to the mold a second composition that resulted in a flexible foam (
t￥f Publication No. 62-37998).
しかしながら、従来技術によれば、２層の異硬度の発泡
部分からなる発泡体クツシロンを製造するに際して、発
泡原料、温度２発泡時間等により高弾性を有する硬いま
たは半可撓性発泡体低弾性を有する発泡体、及び柔軟な
発泡体の夫々の厚みが左右され、希望通りの厚みのクッ
シｖｒ７体を製造することが困難である。However, according to the prior art, when manufacturing a foamed product consisting of two layers of foamed parts with different hardness, it is difficult to create a hard or semi-flexible foam with high elasticity and low elasticity by changing the foaming raw material, temperature, foaming time, etc. It is difficult to manufacture a cushion VR7 body with a desired thickness because the thicknesses of the foam and the flexible foam vary.
また、従来、■異硬度の発泡部分に対する各原液が比較
的混合しにくいものを使ったシ、■比重差のある原料を
使ったシ、■原料注型のタイミングをずらしたシ、ある
いは■スラブ材の副資材を用いる等の方法によシ発泡体
クツションを形成していた。しかしながら、上記■の場
合は原液が混合しＫくい、■、■の場合は使用できる原
液が限定される、即ち相溶性のないもの、比重が明確に
・ 争。In addition, in the past, there were three methods: (1) using materials that are relatively difficult to mix in each stock solution for foamed parts with different hardness, (2) using raw materials with different specific gravities, (2) shifting the timing of raw material casting, or (2) creating slabs. Foam cushions have been formed by methods such as using secondary materials such as wood. However, in the case of ■ above, the stock solutions are difficult to mix, and in the cases of ■ and ■, the stock solutions that can be used are limited, i.e., there is no compatibility, or the specific gravity is clearly disputed.
異なるもの、発泡速度や架橋速度に差のあるものを用い
るなど、■の場合副資材に発泡原液が含浸を起こし底が
硬くなり異物感を与え更に作業工程が増えコスト高の要
因になる等の不具合があった。For example, using different materials or materials with different foaming speeds and crosslinking speeds may cause the foaming stock solution to impregnate the auxiliary materials, making the bottom hard and giving a foreign body feeling, further increasing the number of work steps, and increasing costs. There was a problem.
本発明は上記事情に鑑みてなされたもので、従来と比べ
２層の異硬度の夫々の発泡部分の厚みを正確に規定し得
るとともに、原液の混合が完全に自由で原液の混合不具
合による不安定性さかなく、しかも副資材も不要で異物
感の発生もないモールド用型を提供することを目的とす
る。The present invention has been made in view of the above circumstances, and it is possible to accurately define the thickness of the foamed portions of the two layers of different hardness compared to the conventional method, and the mixing of the stock solutions is completely free, making it possible to avoid problems caused by mixing problems of the stock solutions. To provide a molding die that has good quality, does not require auxiliary materials, and does not give a foreign body feeling.
〔課題を解決するための手段〕
本発明は、上型、下型からなり、夫々異硬度の層をもつ
２層の発泡体を成形するモールド用型において、前記上
型の上面、下面に夫々成形部を有し、一方の成形部の突
出高さが他方の成形部の突出高さよりも高いことを要旨
とする。[Means for Solving the Problems] The present invention provides a molding die for molding a two-layer foam, which includes an upper mold and a lower mold, each having layers of different hardness, and includes a mold on the upper surface and the lower surface of the upper mold, respectively. The gist is to have molded parts, and the protrusion height of one molded part is higher than the protrusion height of the other molded part.
本発明において、硬い発泡体部分の厚みは上型の一方の
成形部の成形面により発泡高さが制限されることにより
規制され、かつ柔軟な発泡体部分の厚みは上型の他方の
成形部の成形面により発泡高さが制限されることにより
規制され、硬い発泡体部分及び柔軟な発泡体部分からな
る発泡体クツシランが容易に得られる。In the present invention, the thickness of the hard foam portion is regulated by limiting the foaming height by the molding surface of one molding section of the upper mold, and the thickness of the flexible foam portion is regulated by the molding surface of one molding section of the upper mold. The foaming height is regulated by the molding surface, and a foamed cutsilan consisting of a hard foam part and a flexible foam part can be easily obtained.
以下、本発明の一実施例を第１図を参照して説明する。 An embodiment of the present invention will be described below with reference to FIG.
図中の１は、下型２と一体的に用いられる上型である。1 in the figure is an upper mold that is used integrally with the lower mold 2.
ここで、前記上型Ｊの上面、下面には夫夫成形部１ｍ、
１ｂが有シ、一方の成形部１ｍの突出高さ（Ｈｌ）が他
方の成形部１ｂの突出高さ（Ｈ２）よりも高くなってい
る。また、前記上型１は中心線３を軸として３６０°回
転するようになっている。Here, on the upper surface and the lower surface of the upper mold J, a husband molding part 1m,
1b is present, and the protrusion height (Hl) of one molded part 1m is higher than the protrusion height (H2) of the other molded part 1b. Further, the upper mold 1 is configured to rotate 360 degrees around the center line 3.
こうした構造のモールド用型を用いて、第２図に示す如
く下層が硬い発泡体部分４＆で、かつ上層が柔軟な発泡
体部分４ｂからなる発泡体クツシ！＋７４を製造するに
は、第３図（Ａ） 、 （Ｂ）に示す如く行う。即ち、
まず突出高さの大きい成形部１ｂを下側にして上型１を
下型２上にセットした後、型内に柔軟な発泡体になる第
１組成物を充填して発泡を行い柔軟な発泡体部分４ｂを
形成する（第３図（４）図示）。次に、上型Ｊを上方に
移動した後、中心線３を軸にして１８０°回動させて上
型１の突出高さの小さい成形部１ａを下側に向け、この
後上型Ｉを下型２に合せる。次いで、型内に硬い発泡体
になる第２組成物を充填して発泡を行い硬い発泡体部分
４１を形成し、発泡体クツシランを製造する（第３図（
Ｂ）図示）。By using a molding die having such a structure, a foam shoe is made which has a hard foam portion 4& as a lower layer and a flexible foam portion 4b as an upper layer, as shown in Fig. 2! +74 is manufactured as shown in FIGS. 3(A) and 3(B). That is,
First, the upper mold 1 is set on the lower mold 2 with the molding part 1b having a large protruding height facing downward, and then the first composition that becomes a flexible foam is filled into the mold and foamed to form a flexible foam. A body portion 4b is formed (as shown in FIG. 3(4)). Next, after moving the upper mold J upward, it is rotated by 180 degrees around the center line 3 to direct the molding part 1a of the upper mold 1 with a small protruding height downward, and then the upper mold I is moved. Align with lower mold 2. Next, a second composition that becomes a hard foam is filled into the mold and foamed to form a hard foam portion 41 to produce a foamed cutusilan (see Fig. 3).
B) As shown).
しかして、上記実施例に係るモールド用型によれば、上
型１の上面、下面には夫々成形部１１１ｂを設け、一方
の成形部１ａの突出高さ（Ｈｌ）を他方の成形部１ｂの
突出高さ（Ｈ２）よりも高くするとともに、前記上型ノ
が中心線３を軸として３６０°回転するように構成され
ているため、硬い発泡体部分４ａの厚みは上型Ｊの成形
部１ａの成形面によシ発泡高さが制限されてその厚みが
規制され、かつ柔軟な発泡体部分４ｂの厚みは上型の成
形部１ｂの成形面により発泡高さが制限されてその厚み
が規制され、下層が所定の厚みの硬い発泡体部分４ａで
、上層が所定の厚みの柔軟な発泡体部分４ｂからなる発
泡体クンジョン４を容易に製造できる。また、従来と比
べ原液の混合が完全に自由で原液の混合不具合による不
安定性さかないとともに、副資材も不要で異物感の発生
もないという利点を有する。According to the mold according to the above embodiment, the molding portions 111b are provided on the upper surface and the lower surface of the upper mold 1, respectively, and the protruding height (Hl) of one molding portion 1a is set to the height (Hl) of the other molding portion 1b. The thickness of the hard foam portion 4a is set higher than the protrusion height (H2) and the upper die is configured to rotate 360 degrees around the center line 3, so the thickness of the hard foam portion 4a is equal to the thickness of the molded portion 1a of the upper die J. The foaming height is limited and its thickness is regulated by the molding surface of the upper mold, and the thickness of the flexible foam portion 4b is regulated by the molding surface of the molding part 1b of the upper mold. By doing so, it is possible to easily manufacture a foam kungjon 4 whose lower layer is a hard foam portion 4a with a predetermined thickness and whose upper layer is a flexible foam portion 4b with a predetermined thickness. In addition, compared to the conventional method, it has the advantage that the stock solutions can be mixed completely freely, there is no instability due to mixing problems of the stock solutions, and there is no need for auxiliary materials and there is no foreign body sensation.
なお、上記実施例では、上型の画成形部が互いに突出し
ている場合について述べたが、これに限らず、例えば第
４図に示す如く一方の成形部５ａがフラットで他方の成
形部５ｂが第１図の場合と同様な突出高さ（Ｈ２）を有
している構造の上型５を用いてもよい。In the above embodiment, the case where the image forming parts of the upper mold protrude from each other has been described, but the invention is not limited to this. For example, as shown in FIG. 4, one forming part 5a is flat and the other forming part 5b is flat. An upper mold 5 having a structure having a protrusion height (H2) similar to that shown in FIG. 1 may be used.
以上詳述した如く本発明によれば、従来と比べ２層の異
硬度の発泡部分の厚みを正確に規定し得るとともに、原
液の混合が完全に自由で原液の混合不具合による不安定
性さかなく、しかも副資材も不要で異物感の発生もない
モールド用型を提供できる。As described in detail above, according to the present invention, it is possible to accurately define the thickness of the two layers of foamed parts with different hardness compared to the conventional method, and the stock solutions can be mixed completely freely, and there is no instability due to mixing problems of the stock solutions. In addition, it is possible to provide a molding die that does not require any auxiliary materials and does not give a foreign body sensation.
第１図は本発明の一実施例に係るモールド用型の断面図
、第２図は発泡体クツションの断面図、第３図は本発明
に係るモールド用型による作用の説明図、第４図は本発
明の他の実施例に係るモールド用型の断面図である。
Ｊ・・・上型、Ｊ＊、ｌｂ・・・成形部、２・・・下型
、３・・・中心線、４・・・発泡体クツション。
出願人代理人 弁理士 鈴 江 武 彦第
図FIG. 1 is a cross-sectional view of a mold according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of a foam cushion, FIG. 3 is an explanatory diagram of the action of the mold according to the present invention, and FIG. FIG. 3 is a sectional view of a molding die according to another embodiment of the present invention. J... Upper mold, J*, lb... Molding part, 2... Lower mold, 3... Center line, 4... Foam cushion. Applicant's Representative Patent Attorney Takehiko Suzue
Claims (1)
体を成形するモールド用型において、前記上型の上面、
下面に夫々成形部を有し、一方の成形部の突出高さが他
方の成形部の突出高さよりも高いことを特徴とするモー
ルド用型。In a molding die for molding a two-layer foam body, each of which includes an upper die and a lower die, each having layers of different hardness, the upper surface of the upper die;
A molding die characterized in that each molding part is formed on the lower surface, and the protruding height of one molding part is higher than the protruding height of the other molding part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63276931A JPH02122905A (en) | 1988-11-01 | 1988-11-01 | Mold for molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63276931A JPH02122905A (en) | 1988-11-01 | 1988-11-01 | Mold for molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02122905A true JPH02122905A (en) | 1990-05-10 |
Family
ID=17576400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63276931A Pending JPH02122905A (en) | 1988-11-01 | 1988-11-01 | Mold for molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02122905A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11745400B2 (en) * | 2015-08-31 | 2023-09-05 | Proprietect L.P. | Vented mold |
-
1988
- 1988-11-01 JP JP63276931A patent/JPH02122905A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11745400B2 (en) * | 2015-08-31 | 2023-09-05 | Proprietect L.P. | Vented mold |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4405681A (en) | Foam article and method of preparation | |
| US4190697A (en) | Multidensity foam article and method of preparation | |
| US4762654A (en) | Method for making foamed articles having a laminated structure | |
| JPS63172614A (en) | Manufacture of molded part, particularly, cushion, from fluid reaction mixture forming at least two kind of foam material having different elasticity or hardness, particularly, polyurethane foam material, and usage of said method for manufacturing automobile seat cushion with side section frame | |
| GB2157559A (en) | Seat pads | |
| JPH02122905A (en) | Mold for molding | |
| JPS58203027A (en) | Manufacture of cushion body of varied hardness and force therefor | |
| JPS63222813A (en) | Manufacture of cushion, particularly, seat cushion for automobile | |
| JPS6317011A (en) | Manufacture of seat pad with different hardness at softened front edge part | |
| JPH02276606A (en) | Manufacture and mold of different hardness cushioning body | |
| JPH0318567B2 (en) | ||
| US4927694A (en) | Method of producing skin-covered pad for seat | |
| JPH0233495B2 (en) | ||
| JPS63218316A (en) | Manufacture of seat cushion with different hardnesses locally | |
| JP2002096341A (en) | Integrated foamed article having different hardness parts and method for manufacturing the same | |
| GB2213094A (en) | Method for making foamed articles having a laminated structure | |
| JPH0369287B2 (en) | ||
| JPS61290013A (en) | Preparation of sheet cushion pad having layers of different hardness | |
| JPS6341963Y2 (en) | ||
| JPS6030254B2 (en) | Manufacturing method of composite cushion bodies for seats etc. | |
| JPH0334954B2 (en) | ||
| JPH01163022A (en) | Manufactore of foam material cushion from different reaction mixture forming at least two kind of foam material having different elasticity or hardness, particularly, polyurethane foam material, and having different fluidity | |
| JPS5881012A (en) | Production of headrest for automobile | |
| JPS6266911A (en) | Manufacture of double layer foamed molded article | |
| JPH03231813A (en) | Manufacture of multi-layer different hardness foamed body |