JPH0314329Y2 - - Google Patents
Info
- Publication number
- JPH0314329Y2 JPH0314329Y2 JP13728686U JP13728686U JPH0314329Y2 JP H0314329 Y2 JPH0314329 Y2 JP H0314329Y2 JP 13728686 U JP13728686 U JP 13728686U JP 13728686 U JP13728686 U JP 13728686U JP H0314329 Y2 JPH0314329 Y2 JP H0314329Y2
- Authority
- JP
- Japan
- Prior art keywords
- mixing chamber
- component supply
- foaming
- stock solution
- component
- 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.)
- Expired
Links
- 238000005187 foaming Methods 0.000 claims description 51
- 239000002994 raw material Substances 0.000 claims description 26
- 239000011550 stock solution Substances 0.000 claims description 25
- 238000007599 discharging Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 2
- 239000006260 foam Substances 0.000 description 16
- 229920005830 Polyurethane Foam Polymers 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 239000012948 isocyanate Substances 0.000 description 5
- 150000002513 isocyanates Chemical class 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 229920005862 polyol Polymers 0.000 description 5
- 150000003077 polyols Chemical class 0.000 description 5
- 239000011496 polyurethane foam Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000013518 molded foam Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案はポリウレタン発泡体のモールド成形に
用いるミキシングヘツドに関し、特に、異硬度モ
ールド発泡製品の製造に有用なミキシングヘツド
に係る。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a mixing head for use in molding polyurethane foam, and more particularly to a mixing head useful in producing molded foam products of different hardness.
ポリウレタンの発泡モールド成形体は、発泡機
を用いてモールド型内に発泡原液を注入散布した
後、閉型して発泡膨張させ、成形室内に充満させ
ることによりモールド成形して製造される。その
際、発泡機には発泡原液の調整のためにミキシン
グヘツドが用いられる。即ち、原料であるイソシ
アネート成分およびポリオール成分は、所定の配
合比で夫々独立してミキシングヘツドに供給さ
れ、高速混合された後、ここで調整された発泡原
液がモールド型内に吐出されるようになつてい
る。
A polyurethane foam molded product is produced by injecting and dispersing a foaming stock solution into a mold using a foaming machine, then closing the mold, allowing the foam to expand and filling the molding chamber. At this time, a mixing head is used in the foaming machine to adjust the foaming stock solution. That is, the isocyanate component and the polyol component, which are raw materials, are each independently supplied to a mixing head at a predetermined mixing ratio, and after being mixed at high speed, the foaming stock solution prepared here is discharged into the mold. It's summery.
ところで、ポリウレタン発泡体のモールド製品
として、各部毎に硬さを変えた所謂「異硬度モー
ルドフオーム」が製造されるようになつた。例え
ば自動車のシートクツシヨンでは、通常座部を柔
らかくし、側部をこれよりも硬くしてホールド感
の向上が図られている。 By the way, so-called "different hardness mold foams" in which each part has different hardness have come to be manufactured as molded products of polyurethane foam. For example, in the case of automobile seat cushions, the seat portion is usually made soft and the side portions are made harder to improve the holding feeling.
上記のような異硬度モールドフオームの製造に
際し、従来は二台の発泡機が用いられている。即
ち、一台の発泡機から柔らかいフオーム用の発泡
原液をモールド型の一部内に吐出し、次いで他の
発泡機から硬いフオーム用の発泡原液をモールド
型の別の部分に吐出する。 Conventionally, two foaming machines are used to manufacture mold forms of different hardness as described above. That is, one foaming machine discharges a foaming stock solution for soft foam into a part of the mold, and then another foaming machine discharges a foaming stock solution for hard foam into another part of the mold.
上記のように、従来の発泡機のミキシングヘツ
ドは一種類の発泡原液しか調整できないため、異
硬度モールドフオームを製造するためには発泡機
が二台必要であつた。従つて、個々の発泡機の稼
働率が低下することとなり、また作業者も二台の
発泡機を操作しなければならないために作業性が
悪いという問題があつた。
As mentioned above, since the mixing head of a conventional foaming machine can only prepare one type of foaming stock solution, two foaming machines are required to manufacture mold foams of different hardness. Therefore, the operating rate of each foaming machine decreases, and the operator also has to operate two foaming machines, resulting in a problem of poor workability.
上記事情に鑑み、本考案は一台の発泡機で異硬
度モールドフオームの製造に必要な二種類の発泡
原液を調整、吐出することを可能としたモールド
発泡機用ミキシングヘツドを提供しようとするも
のである。 In view of the above circumstances, the present invention seeks to provide a mixing head for a mold foaming machine that is capable of adjusting and discharging two types of foaming stock solutions necessary for manufacturing mold foams of different hardness using a single foaming machine. It is.
本考案によるモールド発泡機用ミキシングヘツ
ドは、混合されて発泡原液となる第一成分および
第二成分の二種類の液状原料が射出供給される混
合室と、該混合室で混合調整された発泡原液をモ
ールド型内に吐出するために混合室に設けられた
発泡原液吐出口と、前記混合室に導通して設けら
れた二つの第一成分供給路と、前記混合室に導通
し、且つ前記二つの第一成分供給路の何れかに対
向して設けられた二つの第二成分供給路と、これ
ら第一成分供給路および第二成分供給路の前記混
合室側出口に夫々設けられた電磁弁とを具備し、
前記第一成分供給路の一方及びこれに対向する前
記第二成分供給路の一方かの原料供給と、他方の
第一成分供給路およびこれに対向する第二成分供
給路からの原料供給とを任意に切替えられるよう
に、前記電磁弁の開閉を制御するようにしたこと
を特徴とするものである。
The mixing head for a mold foaming machine according to the present invention includes a mixing chamber into which two types of liquid raw materials, a first component and a second component, which are mixed to form a foaming stock solution, are injected and supplied, and a foaming stock solution that is mixed and adjusted in the mixing chamber. a foaming stock solution discharge port provided in the mixing chamber for discharging the foamed stock solution into the mold; two first component supply channels connected to the mixing chamber and provided in communication with the mixing chamber; two second component supply passages provided opposite to either of the first component supply passages; and a solenoid valve provided at the mixing chamber side outlet of the first component supply passage and the second component supply passage. and
Raw material supply from one of the first component supply paths and the second component supply path opposite thereto, and raw material supply from the other first component supply path and the second component supply path opposite thereto. The present invention is characterized in that the opening and closing of the electromagnetic valve is controlled so as to be switched arbitrarily.
上記本考案の要点は、ミキシングヘツドの混合
室に発泡原料である第一成分および第二成分を供
給する供給路を二対設け、一方からの供給と他方
からの供給とを任意に切替えられるようにしたこ
とである。 The main point of the present invention is that two pairs of supply channels are provided in the mixing chamber of the mixing head for supplying the first and second components, which are foaming raw materials, so that the supply from one side and the other can be switched at will. This is what I did.
本考案のミツキシングヘツドは、二対の原料供
給路のうちの一方を軟質ポリウレタンフオーム原
料の供給に用い、他方を硬質ポリウレタンフオー
ム原料の供給に用いることができる。従つて、こ
れら別々の組成の原料を任意に切替えて使用する
ことにより、一台の発泡機で異硬度モールドフオ
ームを製造することができる。
In the mixing head of the present invention, one of the two pairs of raw material supply paths can be used for supplying a soft polyurethane foam raw material, and the other can be used for supplying a hard polyurethane foam raw material. Therefore, by arbitrarily switching and using raw materials having different compositions, mold foams of different hardness can be manufactured with one foaming machine.
第１図は、本考案の一実施例になるモールド発
泡機用ミキシングヘツドの縦断面図であり、第２
図は第１図−線に沿う横断面図である。
FIG. 1 is a vertical sectional view of a mixing head for a mold foaming machine which is an embodiment of the present invention, and FIG.
The figure is a cross-sectional view along the line of FIG.
これらの図において、１は原料供給路部材、２
は混合室ハウジング、３は吐出ノズル、４は空気
圧入装置である。混合室ハウジング２の内部には
略円筒状の混合室２１が形成されており、該混合
室の内壁には内側に向けた突縁２２が途中に設け
られた内壁部材２３が貼られている。凸縁２２の
間隙を介して、混合室２１は吐出ノズル３の内部
排出路に通じている。吐出ノズル３の排出口は、
整流用の孔あき網３１で覆われている。 In these figures, 1 is a raw material supply path member, 2
3 is a mixing chamber housing, 3 is a discharge nozzle, and 4 is an air injection device. A substantially cylindrical mixing chamber 21 is formed inside the mixing chamber housing 2, and an inner wall member 23 having an inwardly directed protrusion 22 in the middle is attached to the inner wall of the mixing chamber. Via the gap between the convex edges 22, the mixing chamber 21 communicates with the internal discharge channel of the discharge nozzle 3. The discharge port of the discharge nozzle 3 is
It is covered with a perforated net 31 for rectification.
第２図に明瞭に図示したように、原料供給路部
材１には４つの原料供給路１１〜１４が設けられ
ている。供給路１１と１２、供給路１３と１４は
夫々混合室２１の両側に対向して設けられてい
る。供給路１１からは硬質用イソシアネート原料
成分I1、供給路１２からは硬質用ポリオール原料
成分P1、供給路１３からは軟質用イソシアネー
ト原料成分、供給路１４からは軟質要ポリオール
原料成分P2が夫々圧入されるようになつている。
また、これら供給路１１〜１４の混合室２１側出
口には、電磁弁１５〜１８が夫々設けられてお
り、供給路１１，１２からの硬質用原料成分の圧
入と、供給路１３，１４から軟質用原料成分の圧
入とが任意に切替えられるようになつている。 As clearly illustrated in FIG. 2, the raw material supply passage member 1 is provided with four raw material supply passages 11 to 14. The supply channels 11 and 12 and the supply channels 13 and 14 are provided on opposite sides of the mixing chamber 21, respectively. From the supply path 11, the hard isocyanate raw material component I 1 , from the supply path 12 the hard polyol raw material component P 1 , from the supply path 13 the soft isocyanate raw material component, and from the supply path 14 the soft polyol raw material component P 2 They are designed to be press-fitted respectively.
In addition, solenoid valves 15 to 18 are provided at the exits of these supply channels 11 to 14 on the side of the mixing chamber 21, respectively. Press-fitting of raw material components for soft material can be switched arbitrarily.
原料供給路部材１の上に配置された空気圧入装
置４のチヤンバー内は、オリフイス孔４１を介し
て前記混合室２１と導通している。また、チヤン
バー内にはニードル弁４２が設けられている。該
ニードル弁は円盤状のピストン部４３がチヤンバ
ーを上下に二分し、且つ円盤部の下方に設けたニ
ードル部４４の先端が前記オリフイス孔４１を塞
ぐ状態で配置されている。空気圧入装置のハウジ
ング頂面にはエア導入路４５が設けられ、またニ
ードル弁円盤部４３の下方に位置するハウジング
側壁にもエア導入路４６とエア抜き孔４７が設け
られている。エア導入路４５から空気を圧入する
と、ニードル弁４２は下方に押し下げられ、ニー
ドル部の先端がオリフイス孔４１を塞ぐ。また、
エア導入路４６から空気を圧入すると、ニードル
弁４２は上方に押し上げられてオリフイス孔４１
が開くようになつている。 The inside of the chamber of the air injection device 4 disposed above the raw material supply path member 1 communicates with the mixing chamber 21 through an orifice hole 41. Further, a needle valve 42 is provided within the chamber. The needle valve is arranged such that a disk-shaped piston portion 43 divides the chamber into upper and lower halves, and the tip of a needle portion 44 provided below the disk portion closes the orifice hole 41. An air introduction passage 45 is provided on the top surface of the housing of the air injection device, and an air introduction passage 46 and an air vent hole 47 are also provided on the side wall of the housing located below the needle valve disc portion 43. When air is forced in through the air introduction path 45, the needle valve 42 is pushed downward, and the tip of the needle portion closes the orifice hole 41. Also,
When air is pressurized from the air introduction path 46, the needle valve 42 is pushed upward and the orifice hole 41
is starting to open.
上記構成からなるモールド発泡機用ミキシング
ヘツドを、異硬度モールドフオームの製造に使用
する場合の作用を説明すれば次の通りである。 The operation when the mixing head for a mold foaming machine having the above structure is used for manufacturing mold foams of different hardness will be explained as follows.
まず、エア導入路４５から空気を圧入してニー
ドル弁４２を下降させる。この状態で電磁弁１
５，１６を開き、原料供給炉１１，１２から硬質
フオーム用のイソシアネート成分I1およびポリオ
ール成分P1を混合室２１内に噴出供給する。両
成分は対向噴射されて混合され、硬質用の発泡原
液となつて流下し、吐出ノズル３からモールド型
内の所定部位に吐出される。その際、凸縁２２に
よつて発泡原液の流下路の径が途中で絞られてい
るため、ここを通過する際に混合混合効率が高め
られる。また、吐出ノズルの開放端を覆つて整流
用の孔あき網３１が設けられているため、発泡原
液はスムースに吐出される。 First, air is pressurized through the air introduction path 45 to lower the needle valve 42. In this state, solenoid valve 1
5 and 16 are opened, and the isocyanate component I 1 and polyol component P 1 for hard foam are jetted into the mixing chamber 21 from the raw material supply furnaces 11 and 12 . Both components are injected in opposite directions and mixed, flow down as a foaming stock solution for hard materials, and are discharged from the discharge nozzle 3 to a predetermined portion within the mold. At this time, since the diameter of the flow path of the foaming stock solution is narrowed in the middle by the convex edge 22, the mixing efficiency is increased when passing through this. Moreover, since the perforated net 31 for rectification is provided to cover the open end of the discharge nozzle, the foaming stock solution is smoothly discharged.
こうして所定量の硬質フオーム用発泡原液が吐
出されたら、電磁弁１５，１６を閉じ、エア導入
路４６から空気を圧入する。これによりニードル
弁４２が押し上げられてオリフイス孔４１が開
き、空気がオリフイス孔を通つて混合室２１内に
圧入されるため、混合室２１内に残留している硬
質フオーム用発泡原液が一挙に排出される。 When a predetermined amount of the foaming solution for hard foam is discharged in this manner, the solenoid valves 15 and 16 are closed, and air is forced in from the air introduction path 46. As a result, the needle valve 42 is pushed up, the orifice hole 41 is opened, and air is forced into the mixing chamber 21 through the orifice hole, so that the foaming stock solution for hard foam remaining in the mixing chamber 21 is discharged all at once. be done.
次に、再度空気の圧入をエア導入路４５に切替
え、ニードル弁４２を押し下げてオリフイス孔４
１を塞ぐ。この状態で電磁弁１７，１８を開き、
原料供給炉１３，１４から軟質フオーム用のイソ
シアネート成分I2およびポリオール成分P2を混合
室２１内に噴出供給する。両成分は対向噴射され
て混合され、軟質用の発泡原液となる。この軟質
フオーム用発泡原液は混合室２１から流下し、吐
出ノズル３からモールド型内の所定部位に吐出さ
れる。その際の凸縁２２および整流網３１の作用
は上記の通りである。所定量の軟質フオーム用発
泡原液が吐出されたら、電磁弁１７，１８を閉じ
る。前述したと同様、空気圧入をエア導入路４５
に切替えることにより混合室２１内に空気を圧入
し、残留している発泡原液を強制的に排出する。 Next, switch the air injection to the air introduction path 45 again, push down the needle valve 42, and press the orifice hole 45.
Block 1. In this state, open the solenoid valves 17 and 18,
Isocyanate component I 2 and polyol component P 2 for soft foam are jetted into the mixing chamber 21 from the raw material supply furnaces 13 and 14 . Both components are injected in opposite directions and mixed to form a foaming stock solution for soft materials. This foaming stock solution for soft foam flows down from the mixing chamber 21 and is discharged from the discharge nozzle 3 to a predetermined portion within the mold. The actions of the convex edge 22 and the rectifying network 31 at this time are as described above. When a predetermined amount of the foaming stock solution for soft foam is discharged, the solenoid valves 17 and 18 are closed. As mentioned above, air pressure is inserted into the air introduction path 45.
By switching to , air is forced into the mixing chamber 21 and the remaining foaming stock solution is forcibly discharged.
上記の説明から明らかなように、第１図および
第２図の実施例になるミキシングヘツドを用いれ
ば、一台の発泡機で硬質フオーム用発泡原液およ
び軟質フオーム用発泡原液を調整し、且つこれら
二種類の発泡原液を任意に切替えて吐出できる。
従つて、一台の発泡機で異硬度モールドフオーム
を製造できるから、発泡機の稼働効率を従来より
も向上でき、また作業者の泡機が二台必要であつ
た。従つて、個々の発泡機の稼働率が低下するこ
ととなり、また作業者も一台の発泡機を操作する
だけでよいから作業性が改善される。 As is clear from the above description, if the mixing head of the embodiment shown in FIGS. Two types of foaming stock solutions can be switched and discharged at will.
Therefore, since mold foams of different hardness can be manufactured with one foaming machine, the operating efficiency of the foaming machine can be improved compared to the conventional foaming machine, and two foaming machines are required for the operator. Therefore, the operating rate of each foaming machine is reduced, and work efficiency is improved because the operator only needs to operate one foaming machine.
以上詳述したように、本考案によれば一台の発
泡機で異硬度モールドフオームの製造に必要な二
種類の発泡原液を調整、吐出することが可能なモ
ールド発泡機用ミキシングヘツドを提供できる
等、顕著な効果が得られるものである。
As detailed above, according to the present invention, it is possible to provide a mixing head for a mold foaming machine that is capable of adjusting and discharging two types of foaming stock solutions necessary for manufacturing mold foams of different hardness using a single foaming machine. etc., remarkable effects can be obtained.
第１図は本考案の一実施例になるモールド発泡
機用ミキシングヘツドの縦断面図であり、第２図
は第１図−線に沿う横断面図である。
１……原料供給路部材、２……混合室ハウジン
グ、３……吐出ノズル、４……空気圧入装置、１
１〜１４……原料供給路、１５〜１８……電磁
弁、２１……混合室、２２……突縁、２３……内
壁部材、３１……整流用孔あき網、４１……オリ
フイス孔、４２……ニードル弁、４３……ピスト
ン部、４４……ニードル部、４５，４６……エア
導入路、４７……エア抜き孔。
FIG. 1 is a longitudinal cross-sectional view of a mixing head for a mold foaming machine according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the line shown in FIG. 1. DESCRIPTION OF SYMBOLS 1... Raw material supply path member, 2... Mixing chamber housing, 3... Discharge nozzle, 4... Air injection device, 1
1-14... Raw material supply channel, 15-18... Solenoid valve, 21... Mixing chamber, 22... Projection, 23... Inner wall member, 31... Perforated mesh for rectification, 41... Orifice hole, 42... Needle valve, 43... Piston part, 44... Needle part, 45, 46... Air introduction path, 47... Air vent hole.
Claims (1)
二成分の二種類の液状原料が射出供給される混
合室と、該混合室で混合調整された発泡原液を
モールド型内に吐出するために混合室に設けら
れた発泡原液吐出口と、前記混合室に導通して
設けられた二つの第一成分供給路と、前記混合
室に導通し、且つ前記二つの第一成分供給路の
何れかに対向して設けられた二つの第二成分供
給路と、これら第一成分供給路および第二成分
供給路の前記混合室側出口に夫々設けられた電
磁弁とを具備し、前記第一成分供給路の一方及
びこれに対向する前記第二成分供給路の一方か
らの原料供給と、他方の第一成分供給路および
これに対向する第二成分供給路からの原料供給
とを任意に切替えられるように、前記電磁弁の
開閉を制御するようにしたことを特徴とするモ
ールド発泡機用ミキシングヘツド。 (2) 前記混合室と前記吐出口との間の通路の任意
位置に突起を設け、当該位置での口径を狭くす
ることにより、混合効率を高めたことを特徴と
する実用新案登録請求の範囲第１項記載のモー
ルド発泡機用ミキシングヘツド。[Claims for Utility Model Registration] (1) A mixing chamber into which two types of liquid raw materials, a first component and a second component, which are mixed to form a foaming stock solution, are injected and supplied, and a foaming stock solution mixed and adjusted in the mixing chamber. a foaming stock solution discharge port provided in the mixing chamber for discharging the foamed stock solution into the mold; two first component supply channels connected to the mixing chamber and provided in communication with the mixing chamber; two second component supply passages provided opposite to either of the first component supply passages; and a solenoid valve provided at the mixing chamber side outlet of the first component supply passage and the second component supply passage. and a raw material supply from one of the first component supply passages and one of the second component supply passages opposite thereto, and a raw material supply from the other first component supply passage and a second component supply passage opposite thereto. 1. A mixing head for a mold foaming machine, characterized in that opening and closing of the solenoid valve is controlled so that raw material supply can be switched arbitrarily. (2) Claims for registration of a utility model characterized in that the mixing efficiency is improved by providing a protrusion at any position of the passage between the mixing chamber and the discharge port and narrowing the diameter at that position. A mixing head for a mold foaming machine according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13728686U JPH0314329Y2 (en) | 1986-09-09 | 1986-09-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13728686U JPH0314329Y2 (en) | 1986-09-09 | 1986-09-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6343707U JPS6343707U (en) | 1988-03-24 |
| JPH0314329Y2 true JPH0314329Y2 (en) | 1991-03-29 |
Family
ID=31041198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13728686U Expired JPH0314329Y2 (en) | 1986-09-09 | 1986-09-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0314329Y2 (en) |
-
1986
- 1986-09-09 JP JP13728686U patent/JPH0314329Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6343707U (en) | 1988-03-24 |
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