JPS5828823Y2 - Cooling ring for inflation film molding - Google Patents
Cooling ring for inflation film moldingInfo
- Publication number
- JPS5828823Y2 JPS5828823Y2 JP1977139511U JP13951177U JPS5828823Y2 JP S5828823 Y2 JPS5828823 Y2 JP S5828823Y2 JP 1977139511 U JP1977139511 U JP 1977139511U JP 13951177 U JP13951177 U JP 13951177U JP S5828823 Y2 JPS5828823 Y2 JP S5828823Y2
- Authority
- JP
- Japan
- Prior art keywords
- cooling ring
- annular
- cooling
- cooling air
- disc
- 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
Landscapes
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Description
【考案の詳細な説明】
本考案はインフレーションフィルム成形用冷却リングに
関するものである。[Detailed Description of the Invention] The present invention relates to a cooling ring for forming a blown film.
空冷式インフレーションフィルム製造装置においては、
インフレーションダイから円筒状に押出された熱可塑性
樹脂のバブルを冷却する目的で冷却リングが設けられる
が、インフレーションフィルムの円周方向における偏肉
精度は、この冷却リングからの吹き付は空気の流れむら
に大きく左右される。In air-cooled blown film manufacturing equipment,
A cooling ring is provided for the purpose of cooling the thermoplastic resin bubble extruded into a cylindrical shape from an inflation die. greatly influenced by.
たとえば第１図に示すように、円盤状の冷却空気流路１
を有する冷却リング２において、冷却空気流路１にその
周方向複数個所の空気入口部３から給気する場合、冷却
空気流路１の環状開放端４から吹き出される冷却空気に
は該開放端周方向において空気入口部３の影響による流
れむらが生じ、また冷却リング２の加工精度のばらつき
によって冷却空気に流れむらが生じるため、バブルの周
方向偏肉精度が悪化する。For example, as shown in FIG.
In the cooling ring 2 having a cooling air passage 1, when air is supplied to the cooling air passage 1 from the air inlets 3 at a plurality of locations in the circumferential direction, the cooling air blown out from the annular open end 4 of the cooling air passage 1 is supplied to the cooling air passage 1 from the open end. Since flow irregularities occur in the circumferential direction due to the influence of the air inlet portion 3, and flow irregularities occur in the cooling air due to variations in processing accuracy of the cooling ring 2, the circumferential thickness unevenness accuracy of the bubble deteriorates.
このため前記円盤状流路１内に環状解放端４と同心状に
じゃま板を設けたり、あるいは空気入口部が連通してい
る部分にじゃま板で仕切られた大容積の環状空気留室を
形成するというような種々の防止策が施されているが、
局部的冷却空気の流れむらの発生を避けることはできな
かった。For this purpose, a baffle plate is provided in the disc-shaped flow path 1 concentrically with the annular open end 4, or a large-volume annular air retention chamber partitioned by a baffle plate is formed in the portion where the air inlet communicates. Various preventive measures have been taken, such as
The occurrence of localized unevenness in the flow of cooling air could not be avoided.
本考案はかかる点に鑑みてなされたものであり、以下そ
の実施例を第２図〜第４図に基づき説明する。The present invention has been devised in view of these points, and examples thereof will be described below with reference to FIGS. 2 to 4.
５はインフレーションダイであり、該ダイ５の熱可塑性
樹脂押出口６と同心状に冷却リング７が設置される。5 is an inflation die, and a cooling ring 7 is installed concentrically with a thermoplastic resin extrusion port 6 of the die 5.
冷却リング７は内部に円盤状の冷却空気流路８を有して
おり、この流路８の外周部等角度おきに空気人口９が形
成されている。The cooling ring 7 has a disk-shaped cooling air passage 8 inside thereof, and air pockets 9 are formed at equal angular intervals on the outer circumference of the passage 8.
したがって円盤状流路８へはその外周部複数個所から冷
却空気１０が供給される。Therefore, cooling air 10 is supplied to the disc-shaped flow path 8 from a plurality of locations on its outer circumference.
円盤状流路８は前記ダイ５の押出口６近傍で環状に開口
しており、前記冷却空気はこの間口１１から環状に吹き
出され、ダイ押出口６から円筒状に押し出されるバブル
１２を冷却する。The disc-shaped flow path 8 opens in an annular shape near the extrusion port 6 of the die 5, and the cooling air is blown out in an annular shape from this opening 11 to cool the bubble 12 extruded in a cylindrical shape from the die extrusion port 6. .
円盤状流路８の開口部分は、冷却リング７に螺着した上
リップ取付金物１３に上リップ１４をボルト固着すると
共に、該上リップ１４に対向する下リップ１５を設けて
構成してあり、前記取付金物１３の冷却リング７への螺
込量を加減することでリップ間隔を調整し得るようにな
っている。The opening portion of the disc-shaped flow path 8 is configured by fixing an upper lip 14 with bolts to an upper lip fitting 13 screwed onto the cooling ring 7, and providing a lower lip 15 opposite to the upper lip 14. By adjusting the amount by which the mounting hardware 13 is screwed into the cooling ring 7, the gap between the lips can be adjusted.
また円盤状流路８には、前述したように、冷却空気の流
れ方向を蛇行状をなすべく同心状の内外２つのじゃま板
１６．１７が介在されると共に、前記空気人口９が形成
された環状の空気室１８をやや大きめに構成することに
より、空気人口９の影響からくる環状開口１１での吹き
出し冷却空気の流れむらの発生をある程度防止している
。Further, as described above, two concentric baffle plates 16 and 17, an inner and outer concentric baffle plate, are interposed in the disc-shaped flow path 8 to form a meandering flow direction of the cooling air, and the air population 9 is formed. By configuring the annular air chamber 18 to be slightly larger, uneven flow of the blown cooling air at the annular opening 11 due to the influence of the air population 9 can be prevented to some extent.
前記上リップ取付金物１３の内面には、同心状に内外２
つの環状段部１９，２０を形成すると共に、これら段部
１９，２０間に環状の凹入部２１が形成されている。On the inner surface of the upper lip mounting hardware 13, there are two concentric inner and outer walls.
Two annular step portions 19 and 20 are formed, and an annular recessed portion 21 is formed between these step portions 19 and 20.
そして前記段部１９，２０間に環状の弾性材（環状ゴム
板）２２を配置させ、該弾性材２２の内外縁部にそれぞ
れ環状の押えプレー） ２３．２４を配置し、前記段部
１９，２０にこの押えプレート２３．２４をポル） ２
５．２６で締め付けることにより環状弾性材２２を上リ
ップ取付金物１３に固定しである。An annular elastic member (an annular rubber plate) 22 is arranged between the step portions 19 and 20, annular presser plates 23 and 24 are arranged at the inner and outer edges of the elastic member 22, respectively, and the step portion 19, Attach this presser plate 23.24 to 20) 2
The annular elastic member 22 is fixed to the upper lip mounting hardware 13 by tightening with a torque of 5.26.
一方、上リップ取付金物１３の凹入部外壁２７にはねじ
部２８が形成されていて、このねじ部２８に、頭部に球
面押庄２９を有するポル） ３０を螺合し、前記球面押
庄２９を前記弾性材２２に臨ませている。On the other hand, a threaded part 28 is formed on the outer wall 27 of the recessed part of the upper lip mounting hardware 13, and a pole 30 having a spherical embossment 29 on the head is screwed into this threaded part 28. 29 faces the elastic material 22.
このような構成により、円盤状流路８の外壁の一部が、
前記環状開口１１と同心状の環状弾性材２２にて構成さ
れることになる。With such a configuration, a part of the outer wall of the disc-shaped channel 8 is
It is composed of an annular elastic member 22 concentric with the annular opening 11.
３１はボルト３０の緩み止めナツトであり、これらボル
ト３０及びナツト３１により弾性材２２を変形させる押
付具３２が構成されている。Reference numeral 31 denotes a locking nut for the bolt 30, and the bolt 30 and nut 31 constitute a pressing tool 32 that deforms the elastic member 22.
かかる取付具３２は等角度おきに多数設けられている。A large number of such fixtures 32 are provided at equal angle intervals.
かかる構成によって、ボルト３０を第３図仮想線で示し
た如く下方へ螺入すると、弾性材２２は球面押庄２９に
よって押されて変形し、この部分で円盤状流路８を縮小
することになる。With this configuration, when the bolt 30 is screwed downward as shown by the imaginary line in FIG. 3, the elastic member 22 is pushed and deformed by the spherical pusher 29, and the disc-shaped flow path 8 is reduced in this portion. Become.
したがってこの部分で冷却空気流量は局部的に減少する
。Therefore, the cooling air flow rate is locally reduced in this portion.
よって、環状開口１１から吹き出す冷却空気に流れむら
がある場合は、前記した多数のポル） ３０のうち適所
のものを螺入し又は螺出することによって流れむらを防
止することができる。Therefore, if there is an uneven flow of the cooling air blown out from the annular opening 11, the uneven flow can be prevented by screwing in or screwing out the plurality of holes 30 described above at appropriate locations.
この場合、弾性材２２はボルト３０の螺入、螺出により
変形量が調整されるだけであるので、ある特定個所を変
形させた場合に弾性材２２が全体的に変形する事態が考
えられるが、本実施例では押えプレー） ２３．２４に
より該弾性材２２を強固に固定しているため、かかる懸
念はなく、局部的な変形のみとなる。In this case, since the amount of deformation of the elastic material 22 is only adjusted by screwing in and out of the bolt 30, it is conceivable that the elastic material 22 will deform as a whole when a certain specific part is deformed. , in this embodiment, the elastic material 22 is firmly fixed by the pressure play) 23 and 24, so there is no such concern and only local deformation occurs.
なお本実施例においては弾性材２２を上リップ取付金物
１３に取り付けた例を示したが、これに限らず他の有効
な部分、たとえばじゃま板１６又は１７の外壁対向部等
に取り付けても良いことは勿論である。Although this embodiment shows an example in which the elastic material 22 is attached to the upper lip mounting hardware 13, the elastic material 22 is not limited to this, and may be attached to other effective parts, such as the part of the baffle plate 16 or 17 facing the outer wall. Of course.
以上述べたごとく本考案のインフレーションフィルム成
形用冷却リングによれば、たとえ環状開口から吹き出す
冷却空気に流れむらがあっても、各ボルトのうち適所の
ものを螺入し又は螺出することによって、その流れむら
を防止することができるものである。As described above, according to the cooling ring for blown film forming of the present invention, even if the cooling air blown out from the annular opening has an uneven flow, by screwing in or out each bolt at the appropriate position, This can prevent uneven flow.
第１図は従来の冷却リングの概略を示す一部切欠平面図
、第２図〜第４図は本考案の実施例を示し、第２図は全
体縦断側面図、第３図は要部を拡大した縦断側面図、第
４図は第３図のＡ−Ａ矢視図である。
１・・・・・・インフレーションダイ、２・・・・・・
押出口、７・・・・・・冷却リング、８・・・・・・円
盤状流路、９・・・・・・冷却空気入口、１０・・・・
・・冷却空気、１１・・・・・・環状開口、１２・・・
・・・バブル、２２・・・・・・環状弾性材、２９・・
・・・・球面押庄、３０・・・・・・ボルト、３２・・
・・・・押付具。Fig. 1 is a partially cutaway plan view schematically showing a conventional cooling ring, Figs. 2 to 4 show an embodiment of the present invention, Fig. 2 is an overall longitudinal sectional side view, and Fig. 3 shows the main parts. The enlarged vertical side view, FIG. 4, is a view taken along the line A--A in FIG. 3. 1... Inflation die, 2...
Extrusion port, 7... Cooling ring, 8... Disc shaped channel, 9... Cooling air inlet, 10...
...Cooling air, 11...Annular opening, 12...
...Bubble, 22...Annular elastic material, 29...
... Spherical pressure, 30 ... Bolt, 32 ...
...pressing tool.
Claims (1)
を冷却する冷却リングにおいて、前記ダイの押出口近傍
で環状に開口する円盤状流路の外壁の一部を、該開口と
同心状の環状弾性材にて構成すると共に、この環状弾性
材を周方向複数個所で変形させる複数のボルトを設け、
もって前記流路を拡縮変更可能としたことを特徴とする
インフレーションフィルム成形用冷却リング。In a cooling ring that cools bubbles extruded in a cylindrical shape from an inflation die, a part of the outer wall of a disc-shaped channel that opens in an annular shape near the extrusion exit of the die is made of an annular elastic material that is concentric with the opening. At the same time, a plurality of bolts are provided to deform the annular elastic member at a plurality of locations in the circumferential direction,
A cooling ring for forming a blown film, characterized in that the flow path can be expanded or contracted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977139511U JPS5828823Y2 (en) | 1977-10-17 | 1977-10-17 | Cooling ring for inflation film molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977139511U JPS5828823Y2 (en) | 1977-10-17 | 1977-10-17 | Cooling ring for inflation film molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5464173U JPS5464173U (en) | 1979-05-07 |
| JPS5828823Y2 true JPS5828823Y2 (en) | 1983-06-23 |
Family
ID=29113639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1977139511U Expired JPS5828823Y2 (en) | 1977-10-17 | 1977-10-17 | Cooling ring for inflation film molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5828823Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106163766A (en) * | 2014-04-14 | 2016-11-23 | 株式会社湘南贸易 | Uneven thickness adjusting type compression ring |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49122172U (en) * | 1973-02-20 | 1974-10-18 |
-
1977
- 1977-10-17 JP JP1977139511U patent/JPS5828823Y2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106163766A (en) * | 2014-04-14 | 2016-11-23 | 株式会社湘南贸易 | Uneven thickness adjusting type compression ring |
| US10232543B2 (en) | 2014-04-14 | 2019-03-19 | Shonan Trading Co., Ltd. | Thickness variation-adjusting air ring |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5464173U (en) | 1979-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10697162B2 (en) | Flow self-adjusting faucet aerator | |
| JPS5828823Y2 (en) | Cooling ring for inflation film molding | |
| US4694874A (en) | Wheel well obstructor for a wheel rim | |
| US2963741A (en) | Adjustable extrusion die | |
| JP3242326U (en) | Omni wheel with rotor motor | |
| US6752187B1 (en) | Bicycle wheel rim adapted to mount a tubeless tire of a large size | |
| TW201736075A (en) | A female mould | |
| US6095786A (en) | Substrate forming mold, and plate thickness adjusting method of formed substrate in substrate forming mold | |
| US20180104985A1 (en) | Apparatus For Securing A Tire To A Wheel | |
| CN210283239U (en) | Blowing machine wind ring subassembly of adjustable local amount of wind | |
| JPS5865999A (en) | Slant flow type fan | |
| JPS6014560Y2 (en) | Backflow prevention valve for air diffuser | |
| JPS5830667Y2 (en) | Extrusion molding equipment | |
| KR101795346B1 (en) | Cooling hole cap with cooling water partitioning plate for injection mold | |
| JP3008206U (en) | Cooling air supply device for extrusion molding equipment | |
| JPH08156013A (en) | Metal insert for insert molding | |
| JPH0464848B2 (en) | ||
| JPH0330782Y2 (en) | ||
| JPH0731242U (en) | Anti-vibration device for aircraft | |
| JPH01170516A (en) | Extrusion die for hollow section | |
| GB2302940A (en) | Gas burner rings | |
| KR0160156B1 (en) | Air-vent apparatus for tire vulcanizing mould | |
| JP3001482U (en) | Anti-vibration device for aircraft | |
| JPH0410915Y2 (en) | ||
| JPH0141601Y2 (en) |