JPS6234732Y2 - - Google Patents
Info
- Publication number
- JPS6234732Y2 JPS6234732Y2 JP1981112713U JP11271381U JPS6234732Y2 JP S6234732 Y2 JPS6234732 Y2 JP S6234732Y2 JP 1981112713 U JP1981112713 U JP 1981112713U JP 11271381 U JP11271381 U JP 11271381U JP S6234732 Y2 JPS6234732 Y2 JP S6234732Y2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- port
- injection
- holding block
- mixing
- 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
- 239000000463 material Substances 0.000 claims description 21
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 238000007689 inspection Methods 0.000 claims description 15
- 238000010107 reaction injection moulding Methods 0.000 claims description 6
- 230000000007 visual effect Effects 0.000 claims description 3
- 239000011550 stock solution Substances 0.000 description 7
- 238000000465 moulding Methods 0.000 description 6
- 239000012948 isocyanate Substances 0.000 description 5
- 150000002513 isocyanates Chemical class 0.000 description 5
- 229920005862 polyol Polymers 0.000 description 5
- 150000003077 polyols Chemical class 0.000 description 5
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/76—Mixers with stream-impingement mixing head
- B29B7/7663—Mixers with stream-impingement mixing head the mixing head having an outlet tube with a reciprocating plunger, e.g. with the jets impinging in the tube
- B29B7/7684—Parts; Accessories
- B29B7/7689—Plunger constructions
- B29B7/7694—Plunger constructions comprising recirculation channels; ducts formed in the plunger
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/76—Mixers with stream-impingement mixing head
- B29B7/7615—Mixers with stream-impingement mixing head characterised by arrangements for controlling, measuring or regulating, e.g. for feeding or proportioning the components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/76—Mixers with stream-impingement mixing head
- B29B7/7631—Parts; Accessories
- B29B7/7636—Construction of the feed orifices, bores, ports
- B29B7/7642—Adjustable feed orifices, e.g. for controlling the rate of feeding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Description
【考案の詳細な説明】
この考案は、ウレタン等における反応射出成形
（以下「RIM成形」という）の際使用するノズル
の材料噴射形状を目視判定できる検査器具に関す
る。[Detailed Description of the Invention] This invention relates to an inspection instrument that can visually determine the shape of material injection from a nozzle used during reaction injection molding (hereinafter referred to as "RIM molding") of urethane, etc.
ウレタンのRIM成形において原材料のポリオー
ル及びイソシアネートは、射出前それぞれ原液タ
ンクからフイルター、高圧用ポンプを経て、第１
図に示すように、ミキシングヘツド１におけるポ
ートブロツク２、ノズル３、スプール６で隔離さ
れた各室７、及び戻りポート８から再び原液タン
クに戻りポート８から再び原液タンクに戻り低圧
循環されている。また、射出時は、第２図に示す
ようにスプール６が油圧により作動し噴射室９が
形成され、各ノズル３，３から噴射されたポリオ
ール及びイソシアネートが高圧（100〜200Kg／
cm2）で衝突し両液が混合されて金型側へ注入され
る。なお、５はノズルの噴射口の絞り調整用のニ
ードルである。 In urethane RIM molding, the raw materials polyol and isocyanate are passed through a stock solution tank, a filter, and a high-pressure pump before injection.
As shown in the figure, the mixture is returned to the stock solution tank from the port block 2, nozzle 3, and each chamber 7 isolated by the spool 6 in the mixing head 1, and from the return port 8, and is returned to the stock solution tank from the port 8 for low-pressure circulation. . During injection, the spool 6 is actuated by hydraulic pressure to form an injection chamber 9 as shown in Fig. 2, and the polyol and isocyanate injected from each nozzle 3 are released under high pressure (100 to 200 kg/kg).
cm 2 ), the two liquids are mixed and injected into the mold. Note that 5 is a needle for adjusting the aperture of the injection port of the nozzle.
従来、上記成形において得られた製品の中に
は、ポリオールとイソシアネートの混合不良に伴
なうベタツキが生ずるものがあつた。 Conventionally, some of the products obtained by the above molding process were sticky due to poor mixing of polyol and isocyanate.
しかし、従来このポリオールとイソシアネート
の混合はミキシングヘツド内で行なわれるため混
合状態を目視観察できず、混合不良を発見するま
でに多量の材料を無駄にするとともに、別のノズ
ルと取り替える作業も面倒であつた。 However, since the mixing of polyol and isocyanate is conventionally done inside the mixing head, it is not possible to visually observe the mixing state, and a large amount of material is wasted by the time a poor mixing is discovered, and the work of replacing the nozzle with another one is troublesome. It was hot.
この考案は、上記にかんがみ、ミキシングヘツ
ド装着前にノズルの材料噴射状態を目視観察でき
る反応射出成形用ノズルの検査器具を提供するこ
とを目的とする。 In view of the above, it is an object of this invention to provide an inspection tool for reaction injection molding nozzles that allows for visual observation of the material injection state of the nozzle before it is attached to a mixing head.
この考案の要旨は、反応射出成形用ノズルを前
方から押圧して着脱可能に保持する保持ブロツク
と、保持ブロツクと一体化されノズルに材料を注
入可能なポートを備えニードルを保持するポート
ブロツクとからなり、ノズルの材料噴射状態を目
視観察可能とした構成の反応射出成形用ノズルの
検査器具にある。 The gist of this invention is that it consists of a holding block that presses the reaction injection molding nozzle from the front and holds it removably, and a port block that is integrated with the holding block and has a port that allows material to be injected into the nozzle and holds the needle. This invention is a reaction injection molding nozzle inspection instrument configured to allow visual observation of the material injection state of the nozzle.
以下、この考案の一実施例を図面に基づいて説
明する。 An embodiment of this invention will be described below based on the drawings.
第３図に示すように、ノズル３を嵌入可能な中
空部を備えた保持ブロツク１１と、保持ブロツク
１１と一体化されノズル３に材料を注入可能なポ
ート１２を備えニードル１３を保持するポートブ
ロツク１５とからなる。保持ブロツク１１の中空
前部には中空のノズル押え１７がねじ込み可能と
され、ノズル３を前方から押圧して着脱可能とな
つている。また、ニードル１３はポートブロツク
１５とその元部でねじ結合され前後移動してノズ
ル３の噴出口絞りを調整可能となつている。 As shown in FIG. 3, a holding block 11 has a hollow portion into which the nozzle 3 can be inserted, and a port block 12 that is integrated with the holding block 11 and has a port 12 that can inject material into the nozzle 3 and holds a needle 13. It consists of 15. A hollow nozzle holder 17 can be screwed into the hollow front part of the holding block 11, and can be attached or detached by pressing the nozzle 3 from the front. Further, the needle 13 is threadedly connected to the port block 15 at its base and can be moved back and forth to adjust the outlet restriction of the nozzle 3.
上記検査器具は、第４図に示すように、高圧用
ポンプ１８及び圧力計１９を備えた送り配管２０
を介して原液タンク２１と接続され、また、送り
配管２０の圧力計１９と検査器具（ノズル３）と
の間からは切替弁２２を備えた戻り配管２３が分
岐して原液タンク２１と接続されている。なお、
２４は電動機である。また、送り配管２０と戻り
配管２３との分岐点と検査器具（ノズル３）の間
には切り替え弁２５が設けてある。 As shown in FIG.
It is connected to the stock solution tank 21 via the feed pipe 20, and a return pipe 23 equipped with a switching valve 22 branches from between the pressure gauge 19 of the feed pipe 20 and the inspection instrument (nozzle 3) and is connected to the stock solution tank 21. ing. In addition,
24 is an electric motor. Further, a switching valve 25 is provided between the branch point between the feed pipe 20 and the return pipe 23 and the inspection instrument (nozzle 3).
検査前は、原液タンク２１内を、所定量の材料
（ウレタンの場合、ポリオール又はイソシアネー
ト）を入れてN2封入した状能とし、かつ切替弁
２２を開、切替弁２５を閉として高圧用ポンプ１
８を作動させ戻り配管２３を用いて材料を低圧循
環させておく。 Before inspection, the inside of the stock solution tank 21 is filled with a predetermined amount of material (polyol or isocyanate in the case of urethane) and N2 is sealed in it, the switching valve 22 is opened, the switching valve 25 is closed, and the high-pressure pump is turned on. 1
8 to circulate the material at low pressure using the return pipe 23.
検査時は、切替弁２２を閉じ切替弁２５を開ら
く。すると、原液タンク２１内の材料は送り配管
２０から検査器具のポート１２を介してノズル３
に高圧で注入されて噴射口から大気中へ噴射され
る。従つて、ノズル３の材料噴射状態を目視観察
可能となる。 During inspection, the switching valve 22 is closed and the switching valve 25 is opened. Then, the material in the stock solution tank 21 is transferred from the feed pipe 20 to the nozzle 3 through the port 12 of the inspection instrument.
It is injected at high pressure into the air and is injected into the atmosphere from the injection port. Therefore, the material injection state of the nozzle 3 can be visually observed.
なお、噴射形状は、第３図に示すようにノズル
先端面に対して直角に棒状に噴射する場合が材料
混合状態が良好となり、第５図Ａ，Ｂ，Ｃのよう
に、それぞれ噴射角が片よつている、噴射角が大
きい（15゜以上）、噴射角のバランスがとれてい
ない場合には材料混合状態が不良となる。 Regarding the injection shape, the material mixing condition is good when the injection is performed in a bar shape perpendicular to the nozzle tip surface as shown in Fig. 3, and the injection angle is different as shown in Fig. 5 A, B, and C. If the material is uneven, the injection angle is large (15° or more), or the injection angle is not balanced, the material mixing condition will be poor.
また、検査終了後、別のノズルと取り替えて検
査する場合は、切替弁２５を閉じ、切替弁２２を
開らいて戻り配管２３を用いて材料を低圧循環さ
せておく。その後、ノズル押え１７を保持ブロツ
ク１１からはずし、ノズル３を保持ブロツク１１
より取り出す。次に、検査するノズルを保持ブロ
ツク１１に挿入し、ノズル押え１７を保持ブロツ
ク１１に取り付けて前記と同様な操作をして検査
する。 Moreover, when the nozzle is replaced with another nozzle after the inspection is completed, the switching valve 25 is closed, the switching valve 22 is opened, and the material is circulated at low pressure using the return pipe 23. After that, the nozzle holder 17 is removed from the holding block 11, and the nozzle 3 is removed from the holding block 11.
Take it out. Next, the nozzle to be inspected is inserted into the holding block 11, the nozzle holder 17 is attached to the holding block 11, and the same operation as described above is carried out for inspection.
この考案のRIM成形用ノズルの検査器具は、上
記のような構成なので、ミキシングヘツド装着前
にノズルの材料噴射状態を目視観察できる。従つ
て、従来のようにミキシングヘツド装着後に実際
にRIM成形して混合不良を発見するようなことが
ないので多量の材料を無駄にすることがない。ま
た、ノズルの取り替えも容易で検査工数も少なく
てすむ。 Since the RIM molding nozzle inspection device of this invention has the above-described configuration, it is possible to visually observe the material injection state of the nozzle before attaching it to the mixing head. Therefore, unlike the conventional method, there is no need to actually perform RIM molding after installing the mixing head to discover mixing defects, so a large amount of material is not wasted. In addition, the nozzle can be easily replaced and the number of inspection steps can be reduced.
第１図は材料循環時のミキシングヘツドの概略
断面図、第２図は材料混合時のミキシングヘツド
の概略断面図、第３図はこの考案のRIM成形用ノ
ズルの検査器具の一例を示す断面図、第４図はこ
の考案の検査器具を使用する際の配管図、第５図
Ａ，Ｂ，Ｃはそれぞれ混合不良を生じるノズルの
材料噴射形状を示した図である。
３……ノズル、１１……保持ブロツク、１２…
…ポート、１３……ニードル、１５……ポートブ
ロツク、１７……ノズル押え。
Fig. 1 is a schematic cross-sectional view of the mixing head during material circulation, Fig. 2 is a schematic cross-sectional view of the mixing head during material mixing, and Fig. 3 is a cross-sectional view showing an example of the RIM molding nozzle inspection tool of this invention. , FIG. 4 is a piping diagram when using the inspection instrument of this invention, and FIGS. 5A, B, and C are diagrams showing the material injection shape of the nozzle that causes mixing defects, respectively. 3... Nozzle, 11... Holding block, 12...
...Port, 13...Needle, 15...Port block, 17...Nozzle holder.
Claims (1)
脱可能に保持する保持ブロツクと、該保持ブロツ
クと一体化され前記ノズルに材料を注入可能なポ
ートを備えニードルを保持するポートブロツクと
からなり、ノズルの材料噴射状態を目視観察可能
とした構成の反応射出成形用ノズルの検査器具。 It consists of a holding block that presses a nozzle for reaction injection molding from the front and holds it removably, and a port block that is integrated with the holding block and has a port that can inject material into the nozzle and holds a needle. A reaction injection molding nozzle inspection device configured to allow visual observation of material injection conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981112713U JPS5818721U (en) | 1981-07-29 | 1981-07-29 | Inspection equipment for reaction injection molding nozzles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981112713U JPS5818721U (en) | 1981-07-29 | 1981-07-29 | Inspection equipment for reaction injection molding nozzles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5818721U JPS5818721U (en) | 1983-02-04 |
| JPS6234732Y2 true JPS6234732Y2 (en) | 1987-09-04 |
Family
ID=29907034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981112713U Granted JPS5818721U (en) | 1981-07-29 | 1981-07-29 | Inspection equipment for reaction injection molding nozzles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5818721U (en) |
-
1981
- 1981-07-29 JP JP1981112713U patent/JPS5818721U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5818721U (en) | 1983-02-04 |
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