JPH0215631Y2 - - Google Patents
Info
- Publication number
- JPH0215631Y2 JPH0215631Y2 JP1985128084U JP12808485U JPH0215631Y2 JP H0215631 Y2 JPH0215631 Y2 JP H0215631Y2 JP 1985128084 U JP1985128084 U JP 1985128084U JP 12808485 U JP12808485 U JP 12808485U JP H0215631 Y2 JPH0215631 Y2 JP H0215631Y2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- forming
- layer
- die
- discharge port
- 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
- 229920005989 resin Polymers 0.000 claims description 40
- 239000011347 resin Substances 0.000 claims description 40
- 238000000465 moulding Methods 0.000 claims description 10
- 241000239290 Araneae Species 0.000 claims description 5
- 229920003002 synthetic resin Polymers 0.000 claims description 5
- 239000000057 synthetic resin Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion 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、合成樹脂製二層管の製造用口金に関
するものである。[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a cap for manufacturing a two-layer pipe made of synthetic resin.
従来の合成樹脂製二層管を製造する口金は、内
層構成用樹脂押出機の吐出口に、ダイリング内に
スパイダにてマンドレルを支持した口金を直結
し、ダイリングに外層構成用樹脂押出機のクロス
ヘツドダイを備えている。
Conventional ferrules for manufacturing two-layer pipes made of synthetic resin are made by directly connecting a die ring with a mandrel supported by a spider to the discharge port of a resin extruder for forming the inner layer, and connecting the resin extruder for forming the outer layer to the die ring. It has a cross head die.
しかしながら、この従来の口金では、樹脂通路
が最大径となつたダイリングとマンドレルとの間
で、内層樹脂と外層樹脂とが合流するために、
夫々の樹脂流の流速をコントロールしにくかつ
た。
However, in this conventional die, the inner layer resin and the outer layer resin merge between the die ring and the mandrel, where the resin passage has the maximum diameter.
It was difficult to control the flow rate of each resin flow.
そこで、本考案は、内外層構成用樹脂の流速が
コントロールし易く肉厚調整が容易な合成樹脂製
二層管製造用口金を提供するにある。 SUMMARY OF THE INVENTION Therefore, the object of the present invention is to provide a synthetic resin two-layer pipe manufacturing cap that allows easy control of the flow rate of the resin forming the inner and outer layers and easy adjustment of the wall thickness.
次に本考案を図面に基づいて説明する。 Next, the present invention will be explained based on the drawings.
本考案は、上記の問題点を解決するため、内層
構成用樹脂押出機１の吐出口３と、ダイリング６
内にスパイダ８にてマンドレル７を支持した口金
５との間に、内層構成用樹脂押出機１の吐出口３
の内径より小径の樹脂通路を有するとともに外層
構成用樹脂の流入通路１０を形成した二層成形用
ダイ９を設け、該成形用ダイ９の外周部に温度調
節可能なヒータ１６を取付けたことを特徴とす
る。 In order to solve the above-mentioned problems, the present invention provides a discharge port 3 of a resin extruder 1 for forming an inner layer and a die ring 6.
The discharge port 3 of the resin extruder 1 for forming the inner layer is disposed between the base 5 and the mandrel 7 supported by the spider 8.
A two-layer molding die 9 having a resin passageway smaller in diameter than the inner diameter of the molding die 9 and an inflow passageway 10 for the resin forming the outer layer is provided, and a temperature-adjustable heater 16 is attached to the outer periphery of the molding die 9. Features.
したがつて、外層構成用樹脂の流入直前が絞り
込まれており、かつその部分にヒータを配したか
ら、内外層構成用樹脂の流速がコントロールし易
くなり、肉厚調整が容易となる。
Therefore, since the portion immediately before the resin for forming the outer layer flows is narrowed and the heater is disposed at that portion, the flow rate of the resin for forming the inner and outer layers can be easily controlled, and the thickness can be easily adjusted.
以下、図示の一実施例について説明する。 An illustrated embodiment will be described below.
図は本考案の一実施例を示す断面正面図であつ
て、内層構成用樹脂押出機１内には押出用のスク
リユ２が配設され、吐出口３にはブレーカプレー
ト４が設けられている。 The figure is a cross-sectional front view showing one embodiment of the present invention, in which a screw 2 for extrusion is provided in an inner layer-constituting resin extruder 1, and a breaker plate 4 is provided in a discharge port 3. .
一方、口金５は、ダイリング６内にマンドレル
７がスパイダ８にて支持されている。 On the other hand, in the die 5, a mandrel 7 is supported within a die ring 6 by a spider 8.
そして、内層構成用樹脂押出機１と口金５との
間には、二層成形用ダイ９が設けられている。こ
の二層成形用ダイ９は、その樹脂通路の内径Ｄ
が、内層構成用樹脂押出機１の吐出口３の内径Ｃ
より内径に形成されるとともに、内径Ｄよりも大
径の外層構成用樹脂の流入通路１０が環状に設け
られ、該通路１０の流入口１１は口金５方向に開
口しており、流入口１１の外周側の径は口金５の
流入口１２の内径Ｅと略同一に形成されている。
また、流入通路１０には、外層構成用樹脂押出機
１３がブレーカプレート１４、ゲート１５を介し
て接続されている。さらに二層成形用ダイ９の外
周部には複数に分割された温度調整可能なヒータ
１６が配設されている。尚、１７は外層構成用樹
脂押出機１３のスクリユである。 A two-layer molding die 9 is provided between the inner layer forming resin extruder 1 and the die 5. This two-layer molding die 9 has an inner diameter D of its resin passage.
is the inner diameter C of the discharge port 3 of the resin extruder 1 for forming the inner layer.
An inlet passage 10 for the outer layer forming resin is formed in an annular manner and has a larger inner diameter than the inner diameter D. The diameter of the outer circumferential side is formed to be approximately the same as the inner diameter E of the inlet 12 of the cap 5 .
Further, an outer layer forming resin extruder 13 is connected to the inflow passage 10 via a breaker plate 14 and a gate 15 . Furthermore, a plurality of divided temperature-adjustable heaters 16 are disposed on the outer periphery of the two-layer molding die 9. Note that 17 is a screw of the resin extruder 13 for forming the outer layer.
したがつて、内層構成用樹脂押出機１の吐出口
３より内層構成用樹脂が二層成形用ダイ９の樹脂
通路に流入されるとともに、外層構成用樹脂押出
機１３より外層構成用樹脂が流入通路１０を介し
て流入口１１から流入し、ヒータ１６で加熱され
ながら、内層構成用樹脂と二層になつて合流し、
口金５内に送られ、管１８に形成されてフオーマ
（図示せず）に送入される。 Therefore, the resin for forming the inner layer flows into the resin passage of the die 9 for two-layer molding from the discharge port 3 of the resin extruder 1 for forming the inner layer, and the resin for forming the outer layer flows from the resin extruder 13 for forming the outer layer. It flows from the inlet 11 through the passage 10, and while being heated by the heater 16, it merges with the inner layer forming resin to form two layers,
It is fed into the base 5, formed into a tube 18, and fed into a former (not shown).
尚、外層構成用樹脂としては、例えば塩化ビニ
ル、ポリエチレン等の発泡材樹脂が、内層構成用
樹脂としては、例えば塩化ビニル、ポリエチレン
等の合成樹脂が使用される。 Note that as the resin for forming the outer layer, a foamed resin such as vinyl chloride or polyethylene is used, and as the resin for forming the inner layer, for example, a synthetic resin such as vinyl chloride or polyethylene is used.
本考案は以上のように、内層構成用樹脂押出機
の吐出口に、該吐出口の内径より小径の内径を有
するとともに外層構成用樹脂の流入通路を形成
し、外層部に温度調整可能な二層成形用ダイを設
けたから、外層構成用樹脂の流入直前が絞り込ま
れた形となり、かつその外周にヒータを設けたの
で、大きな設備を要せずに内層構成用樹脂及び外
層構成用樹脂の流速がコントロールし易く、肉厚
調整が容易となる。
As described above, the present invention has a discharge port of a resin extruder for forming an inner layer having an inner diameter smaller than the inner diameter of the discharge port, and an inflow passage for the resin forming the outer layer, and a temperature-adjustable two-way in the outer layer portion. Because the layer forming die is provided, the shape is narrowed just before the inflow of the outer layer forming resin, and since a heater is provided around the outer periphery, the flow rate of the inner layer forming resin and outer layer forming resin can be controlled without the need for large equipment. is easy to control, and the wall thickness can be easily adjusted.
また、ヒータを分割して設けると一層効果的で
ある。 Further, it is more effective to provide the heater in separate parts.
図は本考案の一実施例を示す断面正面図であ
る。
１……内層構成用樹脂押出機、３……吐出口、
５……口金、６……ダイリング、７……マンドレ
ル、８……スパイダ、９……二層成形用ダイ、１
０……流入通路、１１……流入口、１３……外層
構成用樹脂押出機、１６……ヒータ。
The figure is a sectional front view showing an embodiment of the present invention. 1...Resin extruder for forming inner layer, 3...Discharge port,
5...Die ring, 7...Mandrel, 8...Spider, 9...Die for two-layer molding, 1
0...Inflow passage, 11...Inflow port, 13...Resin extruder for forming the outer layer, 16...Heater.
Claims (1)
ング６内にスパイダ８にてマンドレル７を支持し
た口金５との間に、内層構成用樹脂押出機１の吐
出口３の内径より小径の樹脂通路を有するととも
に外層構成用樹脂の流入通路１０を形成した二層
成形用ダイ９を設け、該成形用ダイ９の外周部に
温度調節可能なヒータ１６を取付けたことを特徴
とする合成樹脂製二層管製造用口金。 Between the discharge port 3 of the resin extruder 1 for forming the inner layer and the die 5 in which the mandrel 7 is supported by a spider 8 in the die ring 6, there is provided a pipe having a diameter smaller than the inner diameter of the discharge port 3 of the resin extruder 1 for forming the inner layer. A synthetic resin characterized in that a two-layer molding die 9 having a resin passage and an inflow passage 10 for the resin forming the outer layer is provided, and a temperature-adjustable heater 16 is attached to the outer periphery of the molding die 9. A cap for manufacturing double-layer pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985128084U JPH0215631Y2 (en) | 1985-08-22 | 1985-08-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985128084U JPH0215631Y2 (en) | 1985-08-22 | 1985-08-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6235813U JPS6235813U (en) | 1987-03-03 |
| JPH0215631Y2 true JPH0215631Y2 (en) | 1990-04-26 |
Family
ID=31023432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985128084U Expired JPH0215631Y2 (en) | 1985-08-22 | 1985-08-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0215631Y2 (en) |
-
1985
- 1985-08-22 JP JP1985128084U patent/JPH0215631Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6235813U (en) | 1987-03-03 |
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