JPH01152017A - Manufacture of cushion - Google Patents
Manufacture of cushionInfo
- Publication number
- JPH01152017A JPH01152017A JP62289999A JP28999987A JPH01152017A JP H01152017 A JPH01152017 A JP H01152017A JP 62289999 A JP62289999 A JP 62289999A JP 28999987 A JP28999987 A JP 28999987A JP H01152017 A JPH01152017 A JP H01152017A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- reinforcing cloth
- undercut
- magnetic material
- cushion body
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000004744 fabric Substances 0.000 claims abstract description 63
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 60
- 239000000696 magnetic material Substances 0.000 claims abstract description 17
- 238000005187 foaming Methods 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000011888 foil Substances 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 4
- 229920005830 Polyurethane Foam Polymers 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000011496 polyurethane foam Substances 0.000 abstract description 2
- 239000008258 liquid foam Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 206010017472 Fumbling Diseases 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010097 foam moulding Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 239000002759 woven fabric 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
- B29C44/34—Auxiliary operations
- B29C44/58—Moulds
- B29C44/582—Moulds for making undercut articles
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、アンダーカットを有する型に補強布を張設
し、その後型内に液状発泡原料を注入して発泡すること
により、補強布を成形品の裏面に埋設するクッション体
の製造方法に関する。Detailed Description of the Invention (Industrial Field of Application) This invention provides a method for forming a reinforcing cloth by stretching a reinforcing cloth in a mold having an undercut, and then injecting a liquid foaming raw material into the mold and foaming the reinforcing cloth. The present invention relates to a method of manufacturing a cushion body embedded in the back surface of a molded product.
（従来の技術）
自動車の前部座席用背もたれは、クッション体を表皮で
覆ってなるが、後部座席の乗員を不慮の事故から守るた
め、第７図の部分斜視図に示すようにクッション体１０
の上部を比較的大なる袋状１２とするとともに、下部を
背面に折り返した形状１４とされる。クッション体の上
部の袋部１２は後部乗員の頭部を、また下部の折り返し
部１４は後部乗員のずねを保護するためのものである。(Prior Art) The backrest for a front seat of an automobile is made up of a cushion body covered with an outer skin.
The upper part is shaped like a relatively large bag 12, and the lower part is folded back to form a shape 14. The bag part 12 at the upper part of the cushion body is for protecting the head of the rear passenger, and the folded part 14 at the lower part is for protecting the shins of the rear passenger.
このようなりッション体ｌＯは、通常所定の型によりポ
リウレタン等の液状原料から成形されるが、クッション
体１０を補強するため、その裏面に寒冷紗等の補強布１
６が一体成形される。Such a cushion body 10 is usually molded from a liquid raw material such as polyurethane using a predetermined mold, but in order to reinforce the cushion body 10, a reinforcing cloth 1 such as cheesecloth is placed on the back side of the cushion body 10.
6 is integrally molded.
ところでその成形に際し、補強布１６はクッション体に
おいて裏面となる型面にセットされるが、前述の如くク
ッション体１０に袋部１２と折り返し部１４を有する場
合は、成形型がアンダーカットを有することとなり、成
形後クッション体の脱型が困難な場合が多いため、袋部
１２または折り返し部１４の一方を展開した形状とし、
寒冷紗等にて接続した構造とすることによりその成形性
を良好にすることが行われている（実公昭５８−６７３
４）。By the way, during molding, the reinforcing cloth 16 is set on the mold surface which becomes the back surface of the cushion body, but when the cushion body 10 has the bag portion 12 and the folded portion 14 as described above, the mold has an undercut. Therefore, it is often difficult to demold the cushion body after molding, so either the bag portion 12 or the folded portion 14 is made in an expanded shape,
It has been attempted to improve the formability of the structure by connecting it with cheesecloth, etc.
4).
しかし寒冷紗等で接続した構造にあっては、シートフレ
ームにクッション体を、更にはクッション体に表皮を組
み付ける際に、前記展開部をシートフレーム等へ固着す
ることが必要となる欠点を有し、また展開部の接続部が
寒冷紗等のみであるため、その強度が不十分であるきら
いを免れ得なかった。However, the structure in which the connection is made with cheesecloth or the like has the disadvantage that it is necessary to fix the expanded portion to the seat frame, etc. when assembling the cushion body to the seat frame, and furthermore, the skin to the cushion body. Furthermore, since the connecting portion of the unfolding portion is made only of cheesecloth or the like, its strength is inevitably insufficient.
（発明が解決しようとする問題点）
本発明者は上記の欠点を排除するため、成形品がアンダ
ーカットとなるのを承知の上で展開部のないクッション
体を得ようとして、第８図の断面図に示すように型１８
のアンダーカット部にピン２０を立てて、そのピン２０
に寒冷紗等からなる補強布の一端を係止することにより
補強布の型内張設を試みた。(Problems to be Solved by the Invention) In order to eliminate the above-mentioned drawbacks, the present inventor tried to obtain a cushion body without a developed part, knowing that the molded product would have an undercut, as shown in Fig. 8. Mold 18 as shown in the cross-sectional view
Place the pin 20 in the undercut part of the
An attempt was made to line the inside of the mold with reinforcing cloth by locking one end of reinforcing cloth made of cheesecloth or the like.
しかしながら上記の場合、補強布を型に張設する際ピン
２０が型の後ろ側になって作業者からはピン２０が見え
ないので、手探りで張設作業をしなければならず作業が
容易でないばかりか、張設不良による補強布のねじれ及
びはずれを生じやすい問題がある。更に、成形後のクッ
ション体の脱型時にピン２０が邪魔して脱型が難しく、
強引に脱型を行うとクッション体の一部が破れることも
ある。However, in the above case, when stretching the reinforcing fabric on the mold, the pin 20 is on the back side of the mold and the pin 20 is not visible to the worker, so the worker must feel for the tensioning work and the work is not easy. Furthermore, there is a problem in that the reinforcing fabric is likely to twist or come off due to poor tensioning. Furthermore, the pin 20 gets in the way when demolding the cushion body after molding, making demolding difficult.
If the mold is forcibly removed, part of the cushion body may be torn.
そこでこの発明は、上部に袋部、下部に折り返し部を有
し、裏面に補強布が埋設されたクッション体の製造に際
し、補強布の型内張設が容易でしかもクッション体の脱
型も簡単な製造方法を提供しようとするものである。Therefore, when manufacturing a cushion body that has a bag part on the upper part, a folded part on the lower part, and a reinforcing cloth embedded in the back surface, it is easy to line the inside of the mold with the reinforcing cloth, and it is also easy to demold the cushion body. The aim is to provide a manufacturing method that is easy to use.
（問題点を解決するための手段）
この発明は、アンダーカットを有する型に補強布を張設
し、その後液状発泡原料を注入発泡することにより補強
布を成形品の裏面に埋設するクッション体の製造方法に
おいて、型のアンダーカット部に位置することとなる補
強布の所定部にあらかじめ磁性体からなる片または箔を
取り付けておき、その補強布の張設時、型のアンダーカ
ット部に設けた磁石に前記磁性体を吸着させることによ
り、補強布を所望の形状に張設することを特徴とするも
のである。(Means for Solving the Problems) This invention provides a cushion body in which a reinforcing cloth is stretched over a mold having an undercut, and then a liquid foaming raw material is injected and foamed to embed the reinforcing cloth in the back surface of a molded product. In the manufacturing method, a piece or foil made of magnetic material is attached in advance to a predetermined part of the reinforcing cloth that will be located in the undercut part of the mold, and when the reinforcing cloth is stretched, This method is characterized in that the reinforcing cloth is stretched in a desired shape by attracting the magnetic material to a magnet.
（作 用）
補強布を型内に張設する際、目の届かない型の後ろ側に
なるアンダーカット部については、型のアンダーカット
部に埋設された磁石に、補強布のアンダーカット部に設
けた磁性体を吸着させることにより、補強布が型に固定
される。そのため手探り作業となるアンダーカット部に
ついては、作業者は単に補強布を型のアンダーカット部
表面に接触させるだけでよく、従来のように型に設けた
ピンに補強布を突き刺すことも不要なため、補強布の張
設作業が極めて容易になる。(Function) When stretching the reinforcing fabric inside the mold, for the undercut part on the back side of the mold that cannot be seen, a magnet embedded in the undercut part of the mold is placed in the undercut part of the reinforcing cloth. The reinforcing cloth is fixed to the mold by attracting the provided magnetic material. Therefore, when it comes to the undercut part, which requires some fumbling work, the worker only needs to touch the reinforcing cloth to the surface of the undercut part of the mold, and there is no need to pierce the reinforcing cloth through the pins provided in the mold as in the conventional method. , the work of tensioning the reinforcing cloth becomes extremely easy.
また、補強布の型内張設後における液状発泡原料の注入
発泡により補強布を裏面に埋設して形成されたクッショ
ン体の脱型に際し、特に作業のしずらいアンダーカット
部について、クッション体と一体になった補強布を型表
面から引きはがすだけで補強布の磁性体と型の磁石との
吸引を解除できるため、極めて脱型作業がしやすい。し
かも、補強布が型のピンに引っ掛かってクッション体の
脱型ができなかったり、あるいはクッション体が破れた
りすることがない。In addition, when demolding a cushion body formed by embedding reinforcing fabric on the back side by injecting and foaming a liquid foaming raw material after the reinforcing fabric has been placed inside the mold, we have removed the undercuts, which are particularly difficult to work with. The attraction between the magnetic material of the reinforcing cloth and the magnet of the mold can be released by simply peeling off the integrated reinforcing cloth from the mold surface, making demolding work extremely easy. Moreover, the reinforcing cloth will not get caught on the pins of the mold, making it impossible to remove the cushion from the mold, or causing the cushion to be torn.
（実施例） 以下図面を用い実施例に基づきこの発明を説明する。(Example) The present invention will be explained below based on examples using the drawings.
第１図はこの発明の実施時に用いる型２２の断面図、第
２図は中型２４のＡ−Ａ線断面図、第３図は補強布２５
の展開図、第４図は補強布２５の斜視図である。まずそ
の型２２について、次に補強布２５について説明する。FIG. 1 is a sectional view of the mold 22 used in carrying out the present invention, FIG. 2 is a sectional view taken along line A-A of the middle mold 24, and FIG. 3 is a reinforcing cloth 25.
FIG. 4 is a perspective view of the reinforcing cloth 25. First, the mold 22 will be explained, and then the reinforcing cloth 25 will be explained.
型２２は下型２６、中型２４、上型２８からなり、中型
２４と上型２８が下型２６に回動可能に軸支されており
、閉型時に製品形状となるキャビティ３０を有するもの
である。勿論型構造は図示したものに限らない。The mold 22 consists of a lower mold 26, a middle mold 24, and an upper mold 28. The middle mold 24 and the upper mold 28 are rotatably supported by the lower mold 26, and have a cavity 30 that assumes the product shape when the mold is closed. be. Of course, the mold structure is not limited to what is illustrated.
中型２４は、第６図に示したクッション体の袋部１２と
折り返し部１４を形成するためのもので、背面のアンダ
ーカット部３２に磁石３４が埋設されている。The middle mold 24 is used to form the bag portion 12 and the folded portion 14 of the cushion body shown in FIG. 6, and a magnet 34 is embedded in an undercut portion 32 on the back surface.
磁石３４の数及び間隔は、中型２４の大きさ等により適
宜決定される。なお、磁石３４の位置についてはなるべ
くキャビテイ外となるようにするのが好ましく、その−
手段として第６図のように中型２４の磁石３４埋設部表
面と上型２８とが、後記する型２２の開型時に補強布２
５を介して圧着するような型構造とし、発泡原料の注入
発泡時その発泡原料が前記圧着部に侵入しないようにし
ても良い。The number and spacing of the magnets 34 are appropriately determined depending on the size of the medium 24 and the like. Note that it is preferable to position the magnet 34 outside the cavity as much as possible;
As a means, as shown in FIG.
The mold structure may be such that the mold is crimped through the crimping portion 5, so that the foaming material does not enter the crimping portion when the foaming material is injected and foamed.
補強布２５は、織布、不織布等からなるが、中でも寒冷
紗からなるものが好適なものとして用いられる。その？
＋Ｉｉ強布２５は、寒冷紗等を所定形状に裁断して縫い
合わせ等により前記中型２４に被せられるように、およ
び後記するクッション体の袋部の裏面を構成するように
上部が袋形状３５とされるが、中型のアンダーカット部
の磁石３４と接触する部分すなわち補強布のアンダーカ
ット部３３には、鉄またはその他の金属等の磁性体３６
からなる片若しくは箔が、タッカ−止め等により固定さ
れる。なおその磁性体３６は、前記の磁石３４と同様に
、キャビテイ外になるようにするのが好ましい。The reinforcing cloth 25 is made of woven fabric, non-woven fabric, etc., and among them, cheesecloth is preferably used. the?
+Ii The strong cloth 25 has a bag-shaped upper part 35 so that it can be placed over the medium size 24 by cutting cheesecloth or the like into a predetermined shape and sewing it together, and so as to form the back side of the bag portion of the cushion body to be described later. However, a magnetic material 36 made of iron or other metal is attached to the part of the medium-sized undercut part that contacts the magnet 34, that is, the undercut part 33 of the reinforcing cloth.
A piece or foil consisting of is fixed with a tacker or the like. Note that the magnetic body 36 is preferably located outside the cavity, similarly to the magnet 34 described above.
このようにしてなる型２２および補強布２５を用いてク
ッション体が次ぎのようにして発泡成形される。Using the mold 22 and reinforcing cloth 25 thus formed, a cushion body is foam-molded in the following manner.
まず型２２を開いた状態で、型内に補強布２５を張設す
る。その張設は、上部に袋形状３５を形成した補強布２
５を中型２４に被せ、磁性体３６の取り付けられた部分
の補強布２５を中型２４の背面、すなわち中型のアンダ
ーカット部３２側へ折り返して補強布の磁性体３６を中
型の磁石３４に吸着させて行う。First, with the mold 22 open, the reinforcing cloth 25 is stretched inside the mold. The tension is carried out by reinforcing cloth 2 with a bag shape 35 formed on the upper part.
5 over the medium size 24, and fold back the reinforcing cloth 25 at the part where the magnetic body 36 is attached to the back side of the medium size 24, that is, toward the undercut portion 32 side of the medium size, so that the magnetic body 36 of the reinforcing cloth is attracted to the medium size magnet 34. I will do it.
次に下型のキャビティ３０に、ポリウレタンフォーム原
料等の液状発泡原料を注入して、中型２４および上型２
８を下型２６に合わせ型２２を閉じる。Next, a liquid foaming raw material such as a polyurethane foam raw material is injected into the cavity 30 of the lower mold, and the middle mold 24 and the upper mold 2
8 to the lower mold 26 and close the mold 22.
キャビティに注入された液状発泡原料は、第５図の断面
図のようにキャビティ形状に発泡して、上部に袋部３８
、下部に折り返し部４０を有する形状になるとともに、
裏面において補強布２５と接着してその補強布２５が埋
設されたクッション体４２になる。The liquid foaming raw material injected into the cavity is foamed into a cavity shape as shown in the cross-sectional view of FIG.
, has a shape with a folded part 40 at the bottom, and
The reinforcing cloth 25 is bonded to the back surface to form a cushion body 42 in which the reinforcing cloth 25 is embedded.
その後型２２を開けて、中型２４背面側のアンダーカッ
ト部３２に手をやり、クッション体の折り返し部４０を
引っ張って補強布の磁性体３６を中型の磁石３４から引
き離し、磁性体３６と磁石３４との吸引を解除してクッ
ション体の折り返し部４０を中型２４から無理抜きし、
そのクッション体を袋状部３８の方向に引っ張り、クッ
ション体４２を型２２から取り出す。After that, open the mold 22, put your hand on the undercut part 32 on the back side of the medium mold 24, pull the folded part 40 of the cushion body, and separate the magnetic material 36 of the reinforcing cloth from the medium magnet 34. Release the suction and forcefully pull out the folded part 40 of the cushion body from the middle mold 24,
The cushion body is pulled in the direction of the bag-shaped portion 38 and the cushion body 42 is taken out from the mold 22.
その後磁性体の取り付けられた部分を必要に応じて切除
し、製品とする。Thereafter, the part to which the magnetic material is attached is cut off as necessary to produce a product.
（効 果）
この発明は、補強布のアンダーカット部に磁性体を取り
付けて、型のアンダーカット部に設けた磁石に補強布の
磁性体を吸着させることにより補強布を型内に張設して
クッション体を発泡成形するため、作業のしずらいアン
ダーカット部における補強布の張設作業を容易に行うこ
とができ、またクッション体の脱型作業も簡単に行うこ
とができる。(Effects) This invention stretches the reinforcing cloth inside the mold by attaching a magnetic material to the undercut portion of the reinforcing cloth and causing the magnetic material of the reinforcing cloth to be attracted to the magnet provided in the undercut portion of the mold. Since the cushion body is foam-molded, it is easy to stretch the reinforcing fabric in the undercut portion, which is difficult to do, and it is also easy to demold the cushion body.
更に、脱型時にクッション体のアンダーカット部が、従
来のように補強布の張設用として型のアンダーカット部
に設けたビンに引っ掛かって破れることもなく、品質の
良い製品が得られる利点もある。Furthermore, when demolding, the undercut part of the cushion body does not get caught and torn by the bottle provided in the undercut part of the mold for tensioning reinforcing fabric, unlike in the past, and a high-quality product can be obtained. be.
第１図ないし第６図はこの発明の実施例を示すもので、
第１図は型の断面図、第２図は中型のＡ−Ａ線断面図、
第３図は補強布の展開図、第４図は９１１強布の斜視図
、第５図は発泡成形時の型の断面図、第６図は他の型の
部分断面図である。また第７図はクッション体の一部を
切断して示す斜視図、第８図は従来の製造方法に用いら
れる型の一例を示す断面図である。
２２：型、３３：補強布のアンダーカット部、３４：磁
石、３６：磁性体
特許出願人 井上エムチーピー株式会社第４因
第５図
第７図
第８図1 to 6 show embodiments of this invention,
Figure 1 is a cross-sectional view of the mold, Figure 2 is a cross-sectional view of the medium size along line A-A,
FIG. 3 is a developed view of the reinforcing cloth, FIG. 4 is a perspective view of 911 strong cloth, FIG. 5 is a sectional view of a mold during foam molding, and FIG. 6 is a partial sectional view of another mold. Further, FIG. 7 is a perspective view showing a part of the cushion body cut away, and FIG. 8 is a sectional view showing an example of a mold used in the conventional manufacturing method. 22: Mold, 33: Undercut portion of reinforcing cloth, 34: Magnet, 36: Magnetic material Patent applicant Inoue MCHIP Co., Ltd. 4th cause 5 Figure 7 Figure 8
Claims (1)
状発泡原料を注入発泡することにより、補強布を成形品
の裏面に埋設するクッション体の製造方法において、型
のアンダーカット部に位置することとなる補強布の所定
部に、あらかじめ磁性体からなる片または箔を取り付け
ておき、その補強布の張設時、型のアンダーカット部に
設けた磁石に前記磁性体を吸着させることにより、補強
布を所望の形状に張設することを特徴とするクッション
体の製造方法。In a method for manufacturing a cushion body in which a reinforcing cloth is stretched over a mold having an undercut, and then a liquid foaming raw material is injected and foamed to embed the reinforcing cloth in the back surface of a molded product, the reinforcing cloth is placed in an undercut part of the mold. A piece or foil made of magnetic material is attached in advance to a predetermined part of the reinforcing cloth, and when the reinforcing cloth is stretched, the magnetic material is attracted to the magnet provided in the undercut part of the mold, thereby reinforcing the material. A method for manufacturing a cushion body, which comprises stretching cloth into a desired shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62289999A JPH01152017A (en) | 1987-11-17 | 1987-11-17 | Manufacture of cushion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62289999A JPH01152017A (en) | 1987-11-17 | 1987-11-17 | Manufacture of cushion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01152017A true JPH01152017A (en) | 1989-06-14 |
Family
ID=17750473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62289999A Pending JPH01152017A (en) | 1987-11-17 | 1987-11-17 | Manufacture of cushion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01152017A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6986822B1 (en) * | 1999-01-11 | 2006-01-17 | Gottlieb Binder Gmbh & Co. | Method for producing a foam element, especially a foam padding element for a plane or vehicle seat |
| JP2007289372A (en) * | 2006-04-25 | 2007-11-08 | Toyo Tire & Rubber Co Ltd | Seat back pad, and its manufacturing method |
| JP2007290211A (en) * | 2006-04-24 | 2007-11-08 | Toyo Tire & Rubber Co Ltd | Method for producing cushioning pad |
-
1987
- 1987-11-17 JP JP62289999A patent/JPH01152017A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6986822B1 (en) * | 1999-01-11 | 2006-01-17 | Gottlieb Binder Gmbh & Co. | Method for producing a foam element, especially a foam padding element for a plane or vehicle seat |
| JP2007290211A (en) * | 2006-04-24 | 2007-11-08 | Toyo Tire & Rubber Co Ltd | Method for producing cushioning pad |
| JP2007289372A (en) * | 2006-04-25 | 2007-11-08 | Toyo Tire & Rubber Co Ltd | Seat back pad, and its manufacturing method |
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