JPS5867427A - Formation of pad with multiple different hardness - Google Patents
Formation of pad with multiple different hardnessInfo
- Publication number
- JPS5867427A JPS5867427A JP56166582A JP16658281A JPS5867427A JP S5867427 A JPS5867427 A JP S5867427A JP 56166582 A JP56166582 A JP 56166582A JP 16658281 A JP16658281 A JP 16658281A JP S5867427 A JPS5867427 A JP S5867427A
- Authority
- JP
- Japan
- Prior art keywords
- atmospheric pressure
- pad
- pressure
- force
- 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.)
- Granted
Links
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
- B29C44/0415—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 regulating the pressure of the material during or after filling of the mould, e.g. by local venting
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】
本発明は座席等に用いられるパッドの成形方法に関し、
更に詳細に説明する′と、発泡合成樹脂を発泡成形し、
パッドの一部に異硬度部を形成する異硬度パッドの成形
方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of forming a pad used for seats etc.
To explain in more detail, foamed synthetic resin is foam-molded,
The present invention relates to a method for forming a pad with different hardness, which forms a portion with different hardness in a part of the pad.
従来より自動車等の座席のパッドに異硬度部を形成し、
座席のホールド感番向１−させ、或いは感触の優れた座
席ケ得るようになされている。このパッドに異゛硬度部
を形成する方法としては、基本配合の異なる２種類以１
ユの発泡合成樹脂の原液を用い、この異なる発泡合成樹
脂の原液を発泡成形型に別々注入する・１ｆにより部分
的に硬度の異なる異硬度パッドを形成するもの、或いは
別途形成されたインサート材を発泡成形型に挿入し、こ
の状態で発泡合成樹脂の原液を注入し、発泡成形する事
により異硬度パッドを形成−「るもの等が存在する。Conventionally, different hardness parts have been formed on the pads of automobile seats, etc.
It is designed to improve the hold sensitivity of the seat or to provide a seat with an excellent feel. As a method of forming different hardness parts on this pad, there are two types or one with different basic compositions.
Using the foamed synthetic resin stock solution of Yu, separately inject these different foamed synthetic resin stock solutions into foam molds. 1f to form pads with different hardness that partially differ in hardness, or separately formed insert material. There are pads with different hardness that are formed by inserting the pad into a foaming mold, injecting the stock solution of foamed synthetic resin in this state, and foaming it.
然し乍ら、従来の異硬度パッドの成形方法において、前
者は基本配合の異なる少なくとも２種類の発泡合成樹脂
な用いるので、これらの保管設備や制御設備等を心安と
し、作業能率の向上及び件数を四焙小腑羊Ｊ、鞘中１−
１．−
材を別途形成する必要があり、またインサート材をパッ
ド材の所定の位置に配置する作業が煩雑で作業能率を向
上させる事が出来ない欠点を有していた。However, in the conventional molding method for pads with different hardness, the former uses at least two types of foamed synthetic resins with different basic compositions, so it is possible to improve work efficiency and reduce the number of cases by ensuring safe storage and control equipment. Small sheep J, Sayachu 1-
1. - It is necessary to separately form the insert material, and the work of arranging the insert material at a predetermined position on the pad material is complicated, which has the disadvantage that work efficiency cannot be improved.
本発明の目的は同一基本配合の１種類の発泡合成樹脂を
用い、且つインサート材を用いる事なく２種類風りの硬
度を有する異硬度パッドを簡単な装置により簡易迅速に
得る１■が出来、作業能率の向上及び作業環境を改良す
る事が出来る経済性に優れた異硬度パッドの成形方法を
提供するもので、以下図面を参照して詳述する所より明
らかとなるであろう。The purpose of the present invention is to make it possible to easily and quickly obtain pads of different hardness with two types of wind hardness using one type of foamed synthetic resin having the same basic composition and without using insert materials, using a simple device; This invention provides an economical method for molding pads of different hardness that can improve work efficiency and work environment, and will become clear from the detailed description below with reference to the drawings.
第１図には本発明に係る異硬度パッドの成形方法を実施
するための発泡成形型の１実施例の概略が示されており
、この成形型１は座席のクッションパッドを成形する場
合として示されているが、座席等のクッションパッドの
成形に限定されるものではない。FIG. 1 shows an outline of one embodiment of a foaming mold for carrying out the method for molding pads of different hardness according to the present invention, and this mold 1 is shown for molding cushion pads for seats. However, it is not limited to the molding of cushion pads for seats and the like.
成形型１は下型２と中型３とにより成形すべき異硬度パ
ッドの外形に対応する成形室４が形成されており、下型
２の一ヒ端縁はクランク状に外方に延設された固定部５
が形成され、下型２の左右には一対の凹部２ａが形成さ
れている。前記固定部５の下部側の一部（（ゴム材等よ
り形成されたシール材６が設けられ、このシール材６Ｌ
部に中型３が開閉自在に載置さ些ている。中型３には小
孔３ａが穿設されている。In the mold 1, a lower mold 2 and a middle mold 3 form a molding chamber 4 corresponding to the outer shape of a pad of different hardness to be molded, and one edge of the lower mold 2 is extended outward in a crank shape. fixed part 5
A pair of recesses 2a are formed on the left and right sides of the lower mold 2. A part of the lower side of the fixing part 5 (a sealing material 6 formed of a rubber material or the like is provided, and this sealing material 6L
A medium size 3 is placed in the section so that it can be opened and closed. The medium size 3 has a small hole 3a formed therein.
前記中型３の）一部には適宜の空間を保って上型７が開
閉自在に載置され、この上型７と中型３とにより気圧調
整室９が形成されるようになされている。上型７の下部
には外方に延設された固定部１０が形成され、固定部１
０の内側部がゴム材等により形成されたシール材１１を
介して前記中型３の端部に載置され、また固定部１０の
外側部が前記下型２の固定部５の外側部と共に固着部材
１３により開閉自在に取付けられている。An upper mold 7 is placed in a part of the middle mold 3 so as to be openable and closable with an appropriate space, and the upper mold 7 and the middle mold 3 form an air pressure adjustment chamber 9. A fixing part 10 extending outward is formed at the lower part of the upper mold 7, and the fixing part 1
The inner part of the mold 0 is placed on the end of the medium mold 3 via a sealing material 11 made of a rubber material or the like, and the outer part of the fixing part 10 is fixed together with the outer part of the fixing part 5 of the lower mold 2. It is attached by a member 13 so as to be openable and closable.
前記り型７Ｖｃは気圧調整室９内の気圧を減圧及びまた
は増圧調整し得る気圧調整装置２１が連結パイプ２３を
介して連結されている。気圧調整装置２１は真空ポンプ
または圧縮ポンプ等により形成され、気圧調整室９内の
気圧を減圧したい場合には真空ポンプを作動させて気圧
調整室９内のエアを排出し、増圧したい場合には圧縮ポ
ンプを作動させて気圧調整室９内にエアその他のガスを
注入して夫々気圧調整が行なわれる。尚、符号２２は圧
力調整弁であり、２４は電磁弁である。The above-mentioned type 7Vc is connected to an air pressure adjusting device 21 via a connecting pipe 23, which can reduce and/or increase the air pressure in the air pressure adjusting chamber 9. The air pressure adjustment device 21 is formed by a vacuum pump, a compression pump, etc., and when it is desired to reduce the air pressure in the air pressure adjustment chamber 9, the vacuum pump is operated to discharge the air inside the air pressure adjustment chamber 9, and when it is desired to increase the pressure, it is operated. The pressure is adjusted by operating a compression pump to inject air or other gas into the pressure adjustment chamber 9. In addition, the code|symbol 22 is a pressure regulating valve, and 24 is a solenoid valve.
尚、上記実施例においては中型３と上型７とを別個形成
し、シール材１１を介して着脱状態としたものが示され
ているが、中型３を上型７に溶接その他の手段により固
着させたものであってもよい。In the above embodiment, the middle mold 3 and the upper mold 7 are formed separately and are attached and detached via the sealing material 11, but the middle mold 3 may be fixed to the upper mold 7 by welding or other means. It may also be something that has been done.
次に本発明の成形方法を第２図乃至第３図に基づき説明
する。Next, the molding method of the present invention will be explained based on FIGS. 2 and 3.
第２図に示す如く、成形型１の上型７及び中型３を開い
た状態で所定の基本配合からなる発泡合成樹脂の原液３
１′を下型２に注入する。次に第３図に示す如く、下型
２に中型３及び上型７を載置し、下型２と上型７の固定
部５及び１０を夫々同圧を設定した第１の気圧下に保持
し、前記原液３１′を発泡させ、前記原液３１′の発泡
キュアが完了する前に前記成形型１内の気圧を前記第１
の気圧より高い第２の気圧、及び第２の気圧より低い第
３の気圧に保持する。As shown in FIG. 2, with the upper mold 7 and middle mold 3 of the mold 1 open, a foamed synthetic resin stock solution 3 having a predetermined basic composition is shown.
1' is injected into the lower mold 2. Next, as shown in FIG. 3, the middle mold 3 and the upper mold 7 are placed on the lower mold 2, and the fixed parts 5 and 10 of the lower mold 2 and the upper mold 7 are respectively placed under a first atmospheric pressure set to the same pressure. the stock solution 31' is foamed, and before the foaming and curing of the stock solution 31' is completed, the air pressure inside the mold 1 is reduced to the first
The second atmospheric pressure is higher than the atmospheric pressure, and the third atmospheric pressure is lower than the second atmospheric pressure.
前記第１の気圧Ｆにおいて発泡合成樹脂の原液３１′が
発泡を開始し、原液３１′の内側においては発泡熱によ
り温度が高く、発泡キュアが進行するも、成形型１に当
接する原液３１′の外側は成形型１に発泡熱が吸収され
、温度が低く発泡キュアが内側に比較して遅れ、独立気
泡が多くなっている。At the first atmospheric pressure F, the stock solution 31' of the foamed synthetic resin starts foaming, and the temperature inside the stock solution 31' is high due to the heat of foaming, and the foaming cure progresses. The foaming heat is absorbed by the mold 1 on the outside of the mold, the temperature is low, the foaming cure is delayed compared to the inside, and there are many closed cells.
この状態において、成形型１内の気圧を第１の気圧より
高い第２の気圧に保持すると、発泡の進んだ発泡合成樹
脂の発泡体は加圧されて潰され、この発泡体が潰された
まま内側は発泡キュアが進み、比較的硬質の内側パッド
３１Ａが形成される。In this state, when the air pressure inside the mold 1 is maintained at a second air pressure higher than the first air pressure, the foamed synthetic resin foam that has progressed to foaming is pressurized and crushed, and this foam is crushed. Foaming and curing progresses on the inner side, forming a relatively hard inner pad 31A.
尚、前記第１の気圧及びまたは第２の気圧に保持してい
る状態において、成形型１の外側を適宜る事が出来る。Note that while the pressure is maintained at the first atmospheric pressure and/or the second atmospheric pressure, the outside of the mold 1 can be adjusted as appropriate.
次に前記第２の気圧より低い第３の気圧に保持すると、
内側パッド３１Ａは反応が進行しているので復元が少な
く、また発泡合成樹脂の外側の発泡体は反応進行が遅く
、発泡が低い気圧で進行し、且つ独立気泡のものが多い
ので、発泡倍率の高い、即ち軟質の外側パッド３１Ｂが
成形され、異硬度パッド３１が得られる。Next, when the pressure is maintained at a third atmospheric pressure lower than the second atmospheric pressure,
The reaction of the inner pad 31A is progressing, so there is little recovery, and the foam on the outside of the foamed synthetic resin has a slow reaction progress, foaming proceeds at low pressure, and has many closed cells, so the foaming ratio is low. A high or soft outer pad 31B is molded to obtain a pad 31 of different hardness.
尚、前記第１及び第３の気圧を大気圧とし、第２の気圧
を大気圧より高い気圧に保持すれば、気圧調整装置２１
の作動を第２の気圧の場合にのみ作動すればよく、作業
能率を向上させる事が出来る。Note that if the first and third pressures are atmospheric pressure and the second pressure is maintained at a pressure higher than atmospheric pressure, the pressure adjustment device 21
It is only necessary to operate at the second atmospheric pressure, and work efficiency can be improved.
以上が本発明に係る異硬度パッドの成形方法の一実施例
の概略であるが、斯る方法に依れば、同一基本配合の１
種類の発泡合成樹脂を用い、且つインサート材を用いる
事なく２種類以上の硬度を有する異硬度パッドを簡易な
装置及び作業により極めて容易に得る事が出来、更に第
１．第２及び第３の気圧を種々調整する事により小ロッ
トで多品種の、即ち内側パッドと外側パッドの大小及び
硬度の異なる種々の異硬度パッドを得る事が出来、また
１種類の発泡合成樹脂を用いるだけであるので作業環境
を改善する事が出来る経済性に優れた異硬度パッドの成
形方法を得る事が出来る。The above is an outline of one embodiment of the method for forming pads of different hardness according to the present invention.
Pads with different hardnesses having two or more types of hardness can be obtained extremely easily using different types of foamed synthetic resins and without using insert materials, using simple equipment and operations. By adjusting the second and third air pressures in various ways, it is possible to obtain a wide variety of pads in small lots, that is, pads with different sizes and hardnesses for the inner and outer pads, and also to produce one type of foamed synthetic resin. Since only the above method is used, it is possible to obtain an economical method for forming pads of different hardness that can improve the working environment.
尚、上述においては本発明の一実施例を示したに留まり
、成形型１はＬ述の形状のものに限らず、気圧を調整し
得る雰囲気中で発泡合成樹脂の原液を発泡成形し得るも
のであれば、通常の下型と上型とからなる成形型であっ
てもよく、その他車発明の精神を脱する事なしに種々の
変形変更をなし得る事明らかであろう。The above description merely shows one embodiment of the present invention, and the mold 1 is not limited to the shape described in L, but may be any mold that can foam-mold the stock solution of foamed synthetic resin in an atmosphere where the atmospheric pressure can be adjusted. If so, it is obvious that the mold may be a mold consisting of a normal lower mold and an upper mold, and that various other modifications can be made without departing from the spirit of the invention of the vehicle.
第１図は本発明に係る異硬度パッドの成形方法の実施に
用いられる成形型の一実施例の概略を示す断面説明図、
第２図及び第３図は本発明に依る成形方法の各工程を夫
々示すもので、第２図は発泡合成樹脂の原液を注入して
いる状態を示す断面説明図、第３図は気圧を調整して異
硬度パッドを成形した状態を示す断面説明図である。
図中、１・・・成形型、２・・・丁型、３・・・中型、
４・・・成形室、７・・・上型、９・・・気圧調整室、
２１・・・気圧調整装置、３１′・・・発泡合成樹脂の
原液、３１Ａ・・・内側パッド、３１Ｂ・・・外側パッ
ド、３１・・・異硬度パッド。
第２１１FIG. 1 is an explanatory cross-sectional view schematically showing an embodiment of a mold used for carrying out the method for molding pads of different hardness according to the present invention;
Figures 2 and 3 show each step of the molding method according to the present invention. Figure 2 is a cross-sectional explanatory diagram showing a state in which the stock solution of foamed synthetic resin is being injected, and Figure 3 is an explanatory cross-sectional view showing the state in which the foamed synthetic resin stock solution is being poured. FIG. 3 is an explanatory cross-sectional view showing a state in which a pad with different hardness is adjusted and molded. In the figure, 1...Molding mold, 2...Choice type, 3...Medium type,
4... Molding chamber, 7... Upper mold, 9... Air pressure adjustment chamber,
21... Air pressure adjustment device, 31'... Stock solution of foamed synthetic resin, 31A... Inner pad, 31B... Outer pad, 31... Different hardness pad. 211th
Claims (2)
原、液を注入し、前記原液が発泡キュアする時間内に、
前記成形型内の気・圧な第嗜１の”気圧に所定時間保持
し、次に前記第１の気圧より高い第２の気圧に保持した
後、前記第２の気圧より低い第３の気圧に保持する事に
′よりパッドの内部が硬質で外部が比較的軟質の異硬度
パッドを得る事を特徴とする異硬度パッドの成形方法。(1) Inject the foamed synthetic resin raw material and liquid into a mold that can adjust the air pressure inside the mold, and within the time for the raw liquid to foam and cure,
The air/pressure in the mold is maintained at a first atmospheric pressure for a predetermined period of time, then maintained at a second atmospheric pressure higher than the first atmospheric pressure, and then maintained at a third atmospheric pressure lower than the second atmospheric pressure. A method for forming a pad of different hardness, which is characterized in that a pad of different hardness is obtained by holding the pad at a hardness on the inside and relatively soft on the outside.
の気圧に保持している状態において、前記成形型を冷却
させて成形型に当接する発泡合成樹脂の原液の発泡キュ
アを遅らせる事を特徴とする特許請求の範囲第１項記載
の異硬度パッドの成形方法。(2) The atmospheric pressure inside the mold is set to the first atmospheric pressure and/or the second atmospheric pressure.
The pad of different hardness according to claim 1, wherein the mold is cooled while the pressure is maintained at an atmospheric pressure of Molding method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56166582A JPS5867427A (en) | 1981-10-19 | 1981-10-19 | Formation of pad with multiple different hardness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56166582A JPS5867427A (en) | 1981-10-19 | 1981-10-19 | Formation of pad with multiple different hardness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5867427A true JPS5867427A (en) | 1983-04-22 |
| JPH0414046B2 JPH0414046B2 (en) | 1992-03-11 |
Family
ID=15833943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56166582A Granted JPS5867427A (en) | 1981-10-19 | 1981-10-19 | Formation of pad with multiple different hardness |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5867427A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2634157A1 (en) * | 1988-07-15 | 1990-01-19 | Casati Francois | Method and device for manufacturing padded articles by moulding |
| US5202069A (en) * | 1991-04-23 | 1993-04-13 | Astro-Valcour, Inc. | Method for producing foamed, molded thermoplastic articles |
| US5246976A (en) * | 1991-04-23 | 1993-09-21 | Astro-Valcour, Inc. | Apparatus for producing foamed, molded thermoplastic articles and articles produced thereby |
| EP0756923A1 (en) * | 1995-08-01 | 1997-02-05 | Bridgestone Corporation | Apparatus and methods for molding expanded synthetic resin |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4859164A (en) * | 1971-11-29 | 1973-08-18 | ||
| JPS5340626A (en) * | 1976-09-27 | 1978-04-13 | Toyota Motor Co Ltd | Injection sleeve for die caster |
| JPS5341187A (en) * | 1976-09-28 | 1978-04-14 | Toshiba Corp | Thyristor |
| JPS53132065A (en) * | 1977-04-22 | 1978-11-17 | Mtp Kasei Kk | Production of foamed synthetic resin with improved physical property |
-
1981
- 1981-10-19 JP JP56166582A patent/JPS5867427A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4859164A (en) * | 1971-11-29 | 1973-08-18 | ||
| JPS5340626A (en) * | 1976-09-27 | 1978-04-13 | Toyota Motor Co Ltd | Injection sleeve for die caster |
| JPS5341187A (en) * | 1976-09-28 | 1978-04-14 | Toshiba Corp | Thyristor |
| JPS53132065A (en) * | 1977-04-22 | 1978-11-17 | Mtp Kasei Kk | Production of foamed synthetic resin with improved physical property |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2634157A1 (en) * | 1988-07-15 | 1990-01-19 | Casati Francois | Method and device for manufacturing padded articles by moulding |
| US5202069A (en) * | 1991-04-23 | 1993-04-13 | Astro-Valcour, Inc. | Method for producing foamed, molded thermoplastic articles |
| US5246976A (en) * | 1991-04-23 | 1993-09-21 | Astro-Valcour, Inc. | Apparatus for producing foamed, molded thermoplastic articles and articles produced thereby |
| US5348458A (en) * | 1991-04-23 | 1994-09-20 | Astro-Valcour, Inc. | Apparatus for producing foamed, molded thermoplastic articles and articles produced thereby |
| EP0756923A1 (en) * | 1995-08-01 | 1997-02-05 | Bridgestone Corporation | Apparatus and methods for molding expanded synthetic resin |
| US5723152A (en) * | 1995-08-01 | 1998-03-03 | Bridgestone Corporation | Apparatus for vacuum molding expanded synthetic resin parts |
| US5895615A (en) * | 1995-08-01 | 1999-04-20 | Bridgestone Corporation | Method for molding expanded synthetic resin |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0414046B2 (en) | 1992-03-11 |
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