JPS6157184B2 - - Google Patents
Info
- Publication number
- JPS6157184B2 JPS6157184B2 JP53027979A JP2797978A JPS6157184B2 JP S6157184 B2 JPS6157184 B2 JP S6157184B2 JP 53027979 A JP53027979 A JP 53027979A JP 2797978 A JP2797978 A JP 2797978A JP S6157184 B2 JPS6157184 B2 JP S6157184B2
- Authority
- JP
- Japan
- Prior art keywords
- outer diameter
- regulating device
- resin pipe
- diameter regulating
- resin
- 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
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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/901—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
- B29C48/903—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies externally
-
- 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
-
- 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
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92609—Dimensions
- B29C2948/92619—Diameter or circumference
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92923—Calibration, after-treatment or cooling zone
-
- 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
- B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
-
- 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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/885—External treatment, e.g. by using air rings for cooling tubular films
-
- 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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/908—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting
-
- 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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9115—Cooling of hollow articles
- B29C48/912—Cooling of hollow articles of tubular films
-
- 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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
この発明は、薄肉部と厚肉部を交互に有する樹
脂管の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a resin pipe having alternating thin-walled portions and thick-walled portions.
塩化ビニル樹脂等の熱可塑性樹脂を連続的に押
出して樹脂管を製造するとき、押出された樹脂管
の引取る速度を変化させることにより管壁の肉厚
を変えることは知られている。この場合押出機に
付設した口金に外径規制装置を連設し、口金より
吐出する樹脂管を直ちに外径規制装置に導きその
規制面に樹脂管の外周面を常に接触させているた
め、樹脂管の外周面に接触傷がつき易くまた樹脂
管が切れたとき外径規制装置内で樹脂が詰つてそ
の除去が困難であつた。 It is known that when manufacturing a resin pipe by continuously extruding a thermoplastic resin such as vinyl chloride resin, the thickness of the pipe wall can be changed by changing the speed at which the extruded resin pipe is taken up. In this case, an outer diameter regulating device is connected to the mouthpiece attached to the extruder, and the resin tube discharged from the mouthpiece is immediately guided to the outer diameter regulating device so that the outer peripheral surface of the resin pipe is always in contact with the regulating surface. Contact damage easily occurs on the outer peripheral surface of the tube, and when the resin tube is cut, the outer diameter regulating device is clogged with resin, which is difficult to remove.
この発明は、上記の点に鑑みてなされたもので
あつて、その要旨は、押出機に付設した口金から
樹脂管を押出し、外径規制装置を通し、その先で
樹脂管を引取り、その引取り速度を少なくとも二
段階に変化させて高速度と低速度で引取り、高速
度で引取るときには薄肉部を形成し、低速度で引
取るときには厚肉部を形成するようにした樹脂管
の製造方法において、外径規制装置が、口金に連
設される第１の外径規制装置と、口金と離れて設
けられ、且つ冷却状態にある第２の外径規制装置
とからなり、高速度で引取る際には、第１の外径
規制装置を用いることなく第２の外径規制装置の
みにより樹脂管の外径を規制させることを特徴と
する樹脂管の製造方法に存する。 This invention has been made in view of the above points, and its gist is to extrude a resin tube from a mouthpiece attached to an extruder, pass it through an outer diameter regulating device, take it out at the end of the outer diameter regulating device, and take it out. The resin pipe is drawn by changing the drawing speed in at least two stages, a high speed and a low speed, so that a thin wall part is formed when drawing at a high speed, and a thick wall part is formed when drawing at a low speed. In the manufacturing method, the outer diameter regulating device includes a first outer diameter regulating device connected to the cap and a second outer diameter regulating device provided apart from the cap and in a cooled state, and The present invention resides in a method for manufacturing a resin pipe, characterized in that, when the resin pipe is taken off, the outer diameter of the resin pipe is regulated only by a second outer diameter regulating device without using the first outer diameter regulating device.
次に、この発明方法を図面の実施態様を参照し
ながら説明する。 Next, the method of the invention will be explained with reference to embodiments shown in the drawings.
１は押出機（図示されていない）に付設された
口金であり、外型１１と内型１２とからなり、そ
の間に管状間隙が形成されている。内型１２は樹
脂吐出面側で切欠１２１されて外型１１との間に
大小二つの管状間隙が形成されている。 Reference numeral 1 denotes a die attached to an extruder (not shown), and is composed of an outer die 11 and an inner die 12, with a tubular gap formed therebetween. The inner mold 12 is cut out 121 on the resin discharge surface side, and two large and small tubular gaps are formed between the inner mold 12 and the outer mold 11.
２は第１の外径規制装置であつて、口金１に連
設されているようになつている。この規制装置２
は、全体が筒状をなし、その内径は外径１１の内
径とほぼ等しくされ半筒状に上下に分割２１，２
２され、樹脂管Ａを高速で引取る際それぞれが移
動装置３，３により上方部分２１は上方に下方部
分２２は下方に移動して樹脂管Ａの外径規制には
使用しないようになつており、低速で引取る際に
のみ両者２１，２２を閉合して樹脂管Ａの外径を
規制するようにされている。尚、この規制装置２
の内面には図示していないが、環状の溝が穿設さ
れ、この溝は減圧パイプに通じ、装置２の上下部
分２１，２２が閉合時にはその内面と樹脂管Ａと
の間の空気が排出され、これによつて樹脂管Ａが
装置２の内面に密接するようにされ、また装置２
には冷却媒体が循環するようにもされている。 Reference numeral 2 denotes a first outer diameter regulating device, which is connected to the cap 1. This regulating device 2
has a cylindrical shape as a whole, and its inner diameter is approximately equal to the inner diameter of the outer diameter 11, and is divided into upper and lower halves 21, 2 into semi-cylindrical shapes.
2, when taking over the resin pipe A at high speed, the upper part 21 is moved upward and the lower part 22 is moved downward by the moving devices 3, 3, respectively, so that they are not used for regulating the outer diameter of the resin pipe A. Therefore, the outer diameter of the resin pipe A is regulated by closing both 21 and 22 only when taking it off at a low speed. Furthermore, this regulating device 2
Although not shown, an annular groove is bored in the inner surface of the tube A, and this groove leads to a pressure reduction pipe, and when the upper and lower parts 21 and 22 of the device 2 are closed, the air between the inner surface and the resin pipe A is exhausted. This brings the resin pipe A into close contact with the inner surface of the device 2, and also
A cooling medium is also allowed to circulate.
４は第２の外径規制装置であつて筒状体からな
り、冷却水槽５の導入部に取着され、冷却水との
接触により、常に冷却されるようになされてい
る。６は樹脂管Ａの引取装置であり、その引取り
速度は高速と低速の少なくとも二つの段階をとる
ようにされ、それは前記移動装置３，３の作動と
同調するようにされいる。 Reference numeral 4 denotes a second outer diameter regulating device, which is made of a cylindrical body and is attached to the introduction part of the cooling water tank 5, so that it is constantly cooled by contact with the cooling water. Reference numeral 6 denotes a drawing device for the resin pipe A, and its drawing speed takes at least two stages, high speed and low speed, and is synchronized with the operation of the moving devices 3, 3.
樹脂管Ａは、引取り速度が高速時の場合樹脂が
口金１の奥部の小幅の管状間隔を充満するが開口
部の大幅の管状間隙を充満しない状態となつて口
金１から吐出されるが、このとき第１の外径規制
装置２はその上下部分２１，２２が上下に分離移
動させてこの装置２を用いずに第２の外径規制装
置４に導き外径を規制して冷却水槽５に送られ
る。引取り速度を低速にすると、第１の外径規制
装置２の上下部分２１，２２は閉合し、樹脂は口
金１の大幅の管状間隙の少なくとも開口端側部分
を充満した状態となつて樹脂管Ａが厚肉状態で口
金１から吐出され、直ちに第１の外径規制装置２
に導かれて外径を規制され続いて第２の外径規制
装置４、冷却水槽５に導かれる。 When the take-up speed is high, the resin tube A is discharged from the cap 1 with the resin filling the small tubular gap at the back of the cap 1 but not filling the large tubular gap at the opening. At this time, the upper and lower parts 21 and 22 of the first outer diameter regulating device 2 are separated and moved vertically and are guided to the second outer diameter regulating device 4 without using this device 2, regulating the outer diameter and controlling the cooling water tank. Sent to 5. When the take-up speed is reduced, the upper and lower parts 21 and 22 of the first outer diameter regulating device 2 are closed, and the resin fills at least the open end side of the large tubular gap of the mouthpiece 1, and the resin pipe is filled with resin. A is discharged from the mouthpiece 1 in a thick state, and immediately passes through the first outer diameter regulating device 2.
The outer diameter is regulated by the cooling water tank 5, and then guided to the second outer diameter regulating device 4 and the cooling water tank 5.
以上のとおりこの発明方法は、低速の引取りの
場合つまり樹脂管が口金から厚肉状態で吐出され
るときのみ第１の外径規制装置を用い、それ以外
の場合には第１の外径規制装置を用いずに口金か
ら吐出される樹脂管を離れた第２の外径規制装置
に導くものであつて、第１の外径規制装置の規制
面に樹脂管の外周面を常に接触させていないの
で、樹脂管への接触傷がつきにくく、また、第１
の外径規制装置に樹脂が詰るおそれはない。ま
た、第２の外径規制装置は冷却状態となされてい
るので、樹脂管は外径規制された直後に冷却固化
される結果、外観の見栄えのよい樹脂管を得るこ
とができる。 As described above, the method of the present invention uses the first outer diameter regulating device only when the resin pipe is discharged from the mouthpiece in a thick state, and in other cases, the first outer diameter regulating device is used. The resin pipe discharged from the mouthpiece without a regulating device is guided to a second outer diameter regulating device which is separate from the mouth, and the outer circumferential surface of the resin pipe is always in contact with the regulating surface of the first outer diameter regulating device. Since there is no contact scratches on the resin pipe, the first
There is no risk of resin clogging the outer diameter regulating device. Further, since the second outer diameter regulating device is in a cooling state, the resin tube is cooled and solidified immediately after the outer diameter is regulated, so that a resin tube with a good appearance can be obtained.
第１図はこの発明方法の実施の一態様を断面図
により模型的に示したものである。
１……口金、２……第１の外径規制装置、４…
…第２の外径規制装置、５……冷却水槽、６……
引取り装置。
FIG. 1 schematically shows, in cross-sectional view, one embodiment of the method of this invention. 1... Cap, 2... First outer diameter regulating device, 4...
...Second outer diameter regulating device, 5...Cooling water tank, 6...
Collection device.
Claims (1)
外径規制装置を通し、その先で樹脂管を引取り、
その引取り速度を少なくとも二段階に変化させて
高速度と低速度で引取り、高速度で引取るときに
は薄肉部を形成し、低速度で引取るときには厚肉
部を形成するようにした樹脂管の製造方法におい
て、前記外径規制装置が、口金に連接される第１
の外径規制装置と、口金と離れて設けられ、且つ
冷却状態にある第２の外径規制装置とからなり、
高速度で引取る際には、第１の外径規制装置を用
いることなく第２の外径規制装置のみにより樹脂
管の外径を規制させることを特徴とする樹脂管の
製造方法。1 Extrude the resin tube from the nozzle attached to the extruder,
Pass the outer diameter regulating device and take off the resin pipe at the end.
The resin pipe is adapted to change its take-up speed in at least two stages and take it off at high speed and low speed, forming a thin wall part when taking it off at high speed and forming a thick wall part when taking it off at low speed. In the manufacturing method, the outer diameter regulating device includes a first
an outer diameter regulating device, and a second outer diameter regulating device provided apart from the cap and in a cooled state,
A method for manufacturing a resin pipe, characterized in that when taking the resin pipe at high speed, the outer diameter of the resin pipe is regulated only by a second outer diameter regulating device without using the first outer diameter regulating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2797978A JPS54119556A (en) | 1978-03-10 | 1978-03-10 | Manufacture of resin tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2797978A JPS54119556A (en) | 1978-03-10 | 1978-03-10 | Manufacture of resin tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54119556A JPS54119556A (en) | 1979-09-17 |
| JPS6157184B2 true JPS6157184B2 (en) | 1986-12-05 |
Family
ID=12235966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2797978A Granted JPS54119556A (en) | 1978-03-10 | 1978-03-10 | Manufacture of resin tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54119556A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5894509U (en) * | 1981-12-19 | 1983-06-27 | 九州積水工業株式会社 | FRP pipe outer diameter adjustment device |
-
1978
- 1978-03-10 JP JP2797978A patent/JPS54119556A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54119556A (en) | 1979-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4865797A (en) | Method and an apparatus for the extrusion of plastic pipes | |
| JPS6079936A (en) | Method and device for forming bell-like section of single wall to double wall pipe | |
| IE40874B1 (en) | A method of and apparatus for extruding tubes | |
| US5045255A (en) | Method for continuously forming open-mouthed foamed plastic containers by blow molding techniques | |
| CN110817053B (en) | Laminated peeling container and method for producing the same | |
| JPH11221847A (en) | Multi-section plastic container and manufacturing method thereof | |
| US3127636A (en) | Method and apparatus for producing hollow plastic articles | |
| US3665063A (en) | Method for blow molding hollow articles in minimum cycle time | |
| US3470582A (en) | Apparatus for compacting and trimming necks in blow molded containers | |
| JPH0298415A (en) | Manufacture of compression molding having multilayer structure | |
| US5866061A (en) | Method of manufacturing containers for dispensing solutions | |
| JPS6157184B2 (en) | ||
| US3311949A (en) | Apparatus for blow molding hollow articles with conical protrusions | |
| US4550008A (en) | Method for molding plastic products | |
| JPS6157185B2 (en) | ||
| JPH066329B2 (en) | Method and apparatus for extrusion of plastic tubes | |
| US3332112A (en) | Apparatus for extruding hollow plastic articles | |
| JP2606262Y2 (en) | Thin tube forming equipment | |
| CN212097307U (en) | Precise pouring liquid circulating device for injection mold | |
| JP3801281B2 (en) | Bottle pack container molding equipment | |
| JPH10296841A (en) | Manufacturing method of synthetic resin tube with inner rib | |
| JPS588334B2 (en) | Bubuntechiatsunikbuoyuusuru | |
| JPS5646736A (en) | Continuous extruding method for synthetic resin formed article | |
| JPS5926455B2 (en) | Method for manufacturing a resin pipe having an annular hollow part in the pipe wall | |
| JPS633785Y2 (en) |