JPS6157185B2 - - Google Patents
Info
- Publication number
- JPS6157185B2 JPS6157185B2 JP53123890A JP12389078A JPS6157185B2 JP S6157185 B2 JPS6157185 B2 JP S6157185B2 JP 53123890 A JP53123890 A JP 53123890A JP 12389078 A JP12389078 A JP 12389078A JP S6157185 B2 JPS6157185 B2 JP S6157185B2
- Authority
- JP
- Japan
- Prior art keywords
- outer diameter
- regulating device
- diameter regulating
- resin
- resin pipe
- 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
- 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よ
うな樹脂管の製造装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for 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、スタート時に口金より吐出した樹脂管を切
断して外径規制装置を取付けなければならない等
不便であつた。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, and the outer circumferential surface of the resin pipe is always in contact with the regulating surface. It was inconvenient that the resin pipe discharged from the mouthpiece had to be cut and an outer diameter regulating device installed at the time of starting. Further, when the resin pipe is cut, the outer diameter regulating device becomes 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
の製造装置において、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、前記第１の外径規制装置が開閉
可能に縦に分割され、その分割面が軸芯に対して
傾斜していることを特徴とする樹脂管の製造装置
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 apparatus, 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 apparatus for manufacturing a resin pipe is characterized in that one outer diameter regulating device is vertically divided to be openable and closable, and the dividing plane is inclined with respect to the axis.
次に、この発明装置を図面の実施態様を参照し
ながら説明する。 Next, this inventive device 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。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。この装置２は筒状中空部を有し、その内径は
外型１１の内径とほぼ等しくまた半筒状に上下に
分割され、その分割面２３は筒状中空部の軸芯に
対し傾斜している。そして移動装置３，３により
上方部分２１は上方に、下方部分２２は下方に移
動して分割面２３より両者を開くことができるよ
うになつている。 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 is the first
The outer diameter regulating device is connected to the cap 1. This device 2 has a cylindrical hollow part, the inner diameter of which is approximately equal to the inner diameter of the outer mold 11, and is divided into upper and lower half cylinders, the dividing surface 23 being inclined with respect to the axis of the cylindrical hollow part. There is. Then, the upper part 21 is moved upward and the lower part 22 is moved downward by the moving devices 3, 3, so that both can be opened from the dividing surface 23.
傾斜角度は大きくとると樹脂管Ａに被嵌した状
態で上下部分２１，２２を移動して開け難いので
５゜〜15゜程度とするのが好ましい。尚、傾斜角
度が極めて小さいと分割部の合わせ目が樹脂管Ａ
の外周面にすじとして残る傾向になり好ましくな
い。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には冷媒体が循環するよ
うにもされている。 If the angle of inclination is too large, it will be difficult to move and open the upper and lower parts 21 and 22 while they are fitted into the resin tube A, so it is preferable to set the inclination angle to about 5° to 15°. In addition, if the inclination angle is extremely small, the seam of the split part will be connected to the resin pipe A.
This is undesirable because it tends to remain as streaks on the outer peripheral surface. Although not shown, an annular groove is bored in the inner surface of the regulating device 2, and this groove communicates with the pressure reducing pipe, and when the upper and lower parts 21 and 22 of the device 2 are closed, the inner surface and the resin pipe A are connected to each other. The air between is exhausted,
This allows the resin pipe A to come into close contact with the inner surface of the device 2, and also allows a cooling medium to circulate through the device 2.
４は更に樹脂管Ａの外径を規制する第２の外径
規制装置であつて冷却水槽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の引取り装置であ
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ている。 Reference numeral 4 denotes a second outer diameter regulating device for regulating the outer diameter of the resin pipe A, which is attached to the introduction part of the cooling water tank 5 so that it is always cooled by contact with the cooling water. Reference numeral 6 denotes a taking-off device for the resin pipe A, and its taking-off speed is set at at least two stages: high speed and low speed.
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隙を充満するが開口
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、引取り速度を低速にするとき
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 withdrawal speed of the resin pipe A is high, the resin fills the small tubular gap at the back of the cap 1, but does not fill the large tubular gap at the opening, and is discharged from the cap 1. When the removal speed is reduced to a low speed, the resin fills at least the open end side of the large tubular gap of the mouthpiece 1, and the resin tube A is discharged from the mouthpiece 1 in a thick state, and immediately reaches the first outer diameter regulation. It is guided to a device 2 to regulate its outer diameter, and then guided to a second outer diameter regulating device 4 and a cooling water tank 5.
以上の通り、この発明装置は、第１の外径規制
装置が開閉可能に縦に分割されているので、第１
の外径規制装置を開いて樹脂管の押出しを開始
し、その押出しが安定してから第１の外径規制装
置を閉じることにより、セツトすることができ、
押出しの開始作業が容易に行われる。また、押出
し中、樹脂管が第１の外径規制装置内にて詰る等
のトラブルが発生しても、第１の外径規制装置を
開けることにより、そのトラブルを容易に解除す
ることができる。 As described above, in the device of the present invention, the first outer diameter regulating device is divided vertically so that it can be opened and closed.
The first outer diameter regulating device can be set by opening the first outer diameter regulating device to start extruding the resin pipe, and after the extrusion is stabilized, closing the first outer diameter regulating device.
Starting extrusion is easy. Furthermore, even if a problem occurs such as the resin tube becoming clogged within the first outer diameter regulating device during extrusion, the trouble can be easily resolved by opening the first outer diameter regulating device. .
また、第１の外径規制装置の分割面が軸芯に対
して傾斜させているので、分割面の合わせ目が樹
脂管の外面に跡として残ることがなく、外観の見
栄えのよい樹脂管を得ることができる。 In addition, since the dividing surface of the first outer diameter regulating device is inclined with respect to the axis, the seam of the dividing surface does not leave a mark on the outer surface of the resin tube, and the resin tube has a good appearance. Obtainable.
更に、第２の外径規制装置は冷却状態となされ
ているので、樹脂管が第２の外径規制装置により
冷却されるや否や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。 Furthermore, since the second outer diameter regulating device is in a cooling state, the resin tube is cooled and solidified as soon as it is cooled by the second outer diameter regulating device, so that a resin tube with a good appearance can be obtained. I can do it.
第１図はこの発明装置の実施例の縦断面正面
図、第２図は要部の正面図である。
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 is a vertical cross-sectional front view of an embodiment of the apparatus of the present invention, and FIG. 2 is a front view of the main parts. 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装置におい
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、
前記第１の外径規制装置が開閉可能に縦に分割さ
れ、その分割面が軸芯に対して傾斜していること
を特徴とする樹脂管の製造装置。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 apparatus, the outer diameter regulating device is connected to 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 resin pipe manufacturing apparatus, wherein the first outer diameter regulating device is divided vertically so as to be openable and closable, and the dividing plane is inclined with respect to the axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12389078A JPS5551538A (en) | 1978-10-06 | 1978-10-06 | Method for producing resin tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12389078A JPS5551538A (en) | 1978-10-06 | 1978-10-06 | Method for producing resin tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5551538A JPS5551538A (en) | 1980-04-15 |
| JPS6157185B2 true JPS6157185B2 (en) | 1986-12-05 |
Family
ID=14871877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12389078A Granted JPS5551538A (en) | 1978-10-06 | 1978-10-06 | Method for producing resin tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5551538A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3737104A1 (en) * | 1987-11-02 | 1989-05-11 | Altenkirchener Kunststoff | HOSE PIECE OF ELASTIC, EASILY RESETTABLE PLASTIC AND METHOD FOR THE PRODUCTION THEREOF |
| DE102007015065A1 (en) * | 2007-03-29 | 2008-10-02 | Kraussmaffei Technologies Gmbh | PVC foam core pipes |
-
1978
- 1978-10-06 JP JP12389078A patent/JPS5551538A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5551538A (en) | 1980-04-15 |
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