JPH04119818A - Molding method of synthetic resin tube - Google Patents
Molding method of synthetic resin tubeInfo
- Publication number
- JPH04119818A JPH04119818A JP2241744A JP24174490A JPH04119818A JP H04119818 A JPH04119818 A JP H04119818A JP 2241744 A JP2241744 A JP 2241744A JP 24174490 A JP24174490 A JP 24174490A JP H04119818 A JPH04119818 A JP H04119818A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- resin pipe
- tube
- wall thickness
- resin tube
- 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.)
- Pending
Links
- 229920003002 synthetic resin Polymers 0.000 title claims abstract description 72
- 239000000057 synthetic resin Substances 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims description 15
- 238000000465 moulding Methods 0.000 title claims description 8
- 238000001125 extrusion Methods 0.000 abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 230000007423 decrease Effects 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
- B29C48/88—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
- B29C48/03—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
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
- B29C48/327—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections with centering means
-
- 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
- B29C48/902—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 internally
-
- 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)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、合成樹脂管の成形方法に係り、特に、押出
成形によって円筒形状に押し出される合成樹脂管の内径
をサポータリングで整え、その後に合成樹脂管の外径を
フォーミングチューブで整えるようになした合成樹脂管
の成形方法に関する。Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a method of forming a synthetic resin pipe, and in particular, the inner diameter of a synthetic resin pipe extruded into a cylindrical shape by extrusion molding is adjusted using a support ring, and then This invention relates to a method of forming a synthetic resin pipe in which the outer diameter of the synthetic resin pipe is adjusted using a forming tube.
（従来の技術）
従来、一般に、この種の合成樹脂管の成形方法において
は、サポータリングとフォーミングチューブは軸方向に
軸芯を合致させ、押出成形機の金型から押出された合成
樹脂管に、周方向の肉厚のばらつき、すなわち、周方向
の一部分が厚く、それと反対側が薄いという肉厚の不均
一が存在する場合には、金型の押出スリットの間隙を調
整して周方向の肉厚を均一化していた。(Prior art) Conventionally, in general, in this type of synthetic resin pipe forming method, the supporting ring and the forming tube are aligned in the axial direction, and the forming tube is attached to the synthetic resin pipe extruded from the mold of an extrusion molding machine. If there is variation in wall thickness in the circumferential direction, that is, if there is uneven thickness in the circumferential direction, where one part of the circumference is thicker and the other side is thinner, the gap between the extrusion slits of the mold can be adjusted to reduce the thickness in the circumferential direction. The thickness was made uniform.
（発明が解決しようとする課題）
ところが、このように金型の押出スリットの間隙を調整
するには、金型の周方向に配された複数本のボルトの締
め具合を調整する必要があった。(Problem to be solved by the invention) However, in order to adjust the gap between the extrusion slits of the mold in this way, it was necessary to adjust the tightness of multiple bolts arranged in the circumferential direction of the mold. .
このために、この作業が非常に面倒で且つ複雑な操作を
必要とし、肉厚の調整に長時間要し、この間に大量の不
良品が発生するといった問題があった。For this reason, this work is extremely troublesome and requires complicated operations, and it takes a long time to adjust the wall thickness, resulting in a large number of defective products.
この発明の課題は、上記従来の問題を解決することにあ
る。An object of the present invention is to solve the above-mentioned conventional problems.
（課題を解決するための手段）
この発明は、上記課題を解決するために、サポータリン
グの軸芯に対してフォーミングチューブの軸芯を、合成
樹脂管の薄肉な側から厚肉な側へ向けてずらすことによ
り、合成樹脂管の肉厚を調整して均一化させることとし
た。(Means for Solving the Problems) In order to solve the above problems, the present invention aims to orient the axial center of the forming tube from the thin-walled side of the synthetic resin pipe to the thick-walled side with respect to the axial center of the supporting ring. By shifting the pipe, the wall thickness of the synthetic resin pipe could be adjusted and made uniform.
（作用）
この発明ではサポータリングの軸芯に対してフォーミン
グチューブの軸芯を合成樹脂管の薄肉な側から厚肉な側
へ向けてずらす。フォーミングチューブをこのようにず
らすことによりサポータリングとフォーミングチューブ
では、薄肉であった側においては、合成樹脂管に抵抗が
加わり引張り難くなり肉厚か厚くなると共に縮径して肉
厚が厚くなる。また、厚肉であった側においては、合成
樹脂管にかかる抵抗が減少するため、合成樹脂管の引張
り力がサポータリングの金型側まで及び肉厚が薄くなる
と共に、サポータリングとフォーミングチューブとの間
で合成樹脂管がほとんど縮径されないので、肉厚が厚く
なることもない。フォーミングチューブをずらす程度を
調整すると全周にわたって均一な肉厚の合成樹脂管を成
形できる。(Function) In this invention, the axis of the forming tube is shifted from the thin side of the synthetic resin pipe toward the thick side with respect to the axis of the supporter ring. By shifting the forming tube in this way, on the thinner side of the supporting ring and forming tube, resistance is added to the synthetic resin tube, making it difficult to pull, making the tube thicker, and reducing the diameter and making the tube thicker. In addition, on the thicker side, the resistance applied to the synthetic resin tube is reduced, so the tensile force of the synthetic resin tube is extended to the mold side of the supporter ring, and the wall thickness becomes thinner, and the tension between the supporter ring and the forming tube increases. Since the diameter of the synthetic resin pipe is hardly reduced between the parts, the wall thickness does not increase. By adjusting the degree to which the forming tube is shifted, it is possible to form a synthetic resin tube with uniform wall thickness over the entire circumference.
このことによって、容易にこの合成樹脂管の肉厚の均一
化を行うことが可能である。By this, it is possible to easily equalize the wall thickness of this synthetic resin pipe.
（実施例）
以下、この発明に係る合成樹脂管の成形方法を、その実
施態様を示す図面に基づいて説明する。(Example) Hereinafter, a method for molding a synthetic resin pipe according to the present invention will be described based on drawings showing embodiments thereof.
第１図はこの発明に係る合成樹脂管の成形方法の実施態
様を示す説明断面図、第２図は第１図における合成樹脂
管の■−■線断面図、第３図は第１図における合成樹脂
管のｍ−ｍ線断面図、第４図はこの発明の成形方法を実
施する以前の合成樹脂管の成形状態を示す説明断面図、
第５図は第４図における合成樹脂管のＶ−Ｖ線断面図、
第６図は第４図における合成樹脂管のＶｌ−ＶＩ線断面
図である。FIG. 1 is an explanatory cross-sectional view showing an embodiment of the synthetic resin pipe molding method according to the present invention, FIG. 2 is a cross-sectional view taken along the line ■-■ of the synthetic resin pipe in FIG. 1, and FIG. FIG. 4 is an explanatory sectional view showing the molded state of the synthetic resin pipe before the molding method of the present invention is carried out; FIG.
Figure 5 is a sectional view taken along the line V-V of the synthetic resin pipe in Figure 4;
FIG. 6 is a sectional view taken along the line Vl-VI of the synthetic resin pipe in FIG. 4.
この発明に関する合成樹脂管の成形方法は、押出成形に
よって円筒形状に押出される合成樹脂管１の内径をサポ
ータリング２で整え、その後に合成樹脂管１の外径をフ
ォーミングチューブ３で整えるようにしたものである。The method for forming a synthetic resin pipe according to the present invention includes adjusting the inner diameter of a synthetic resin pipe 1 extruded into a cylindrical shape by extrusion molding with a supporter ring 2, and then adjusting the outer diameter of the synthetic resin pipe 1 with a forming tube 3. This is what I did.
−Ｃに、第４図に示すように、サポータリング２とフォ
ーミングチューブ３を軸方向に軸芯が合致させると、押
出成形機（図示せず）の金型４から押出された合成樹脂
管１の肉厚は、金型４のスリット間隙の調整不良や周方
向の樹脂温度のばらつきによる流動性の不均一などによ
り、例えば第５図と第６図に示すように、合成樹脂管１
における周方向の肉厚の不均一（厚肉の下側部分１ａと
薄肉の上側部分１ｂ）がそのまま残り均一化されない場
合がある。-C, as shown in FIG. 4, when the support ring 2 and the forming tube 3 are aligned in the axial direction, the synthetic resin tube 1 is extruded from the mold 4 of the extrusion molding machine (not shown). The wall thickness of the synthetic resin pipe 1 may vary due to uneven fluidity due to improper adjustment of the slit gap of the mold 4 or variations in resin temperature in the circumferential direction, for example, as shown in FIGS. 5 and 6.
The non-uniformity of the wall thickness in the circumferential direction (thick lower portion 1a and thinner upper portion 1b) may remain as is and not be made uniform.
この発明は、この場合に、サポータリング２の軸芯に対
してフォーミングチューブ３の軸芯を、合成樹脂管１の
薄肉な側から厚肉な側へ向けてずらすことにより、合成
樹脂管１の肉厚を調整して均一化させることとした。In this case, by shifting the axis of the forming tube 3 from the thin-walled side of the synthetic resin pipe 1 to the thick-walled side with respect to the axis of the supporter ring 2, We decided to adjust the wall thickness to make it uniform.
例えば、第４図及び第５図に示すように、押出成形機の
金型４から押出された合成樹脂管１の周方向における肉
厚が、下側部分１ａで厚くなるときには次のようにする
。For example, as shown in FIGS. 4 and 5, when the thickness in the circumferential direction of the synthetic resin pipe 1 extruded from the mold 4 of the extrusion molding machine becomes thicker at the lower portion 1a, the following procedure is performed. .
すなわち、第１図に示すように、サポータリング２の軸
芯に対してフォーミングチューブ３の軸芯を、合成樹脂
管１の薄肉な側、すなわち上側から厚肉な側、すなわち
下側にずらす。That is, as shown in FIG. 1, the axis of the forming tube 3 is shifted from the thinner side, ie, the upper side, of the synthetic resin pipe 1 to the thicker side, ie, the lower side, with respect to the axis of the supporter ring 2.
すると、合成樹脂管５の上側部分５ｂではサポータリン
グ２とフォーミングチューブ３との双方の抵抗が増加し
、肉厚が厚くなる。また、合成樹脂管５の下側部分５ａ
ではサポータリング２とフォーミングチューブ３との抵
抗が減少して引張り力により肉厚が薄くなり、第２図に
示すように合成樹脂管５の厚肉な下側部分２ａと薄肉な
上側部分２ｂとの肉厚の差は小さくなる。Then, in the upper portion 5b of the synthetic resin pipe 5, the resistance of both the supporter ring 2 and the forming tube 3 increases, and the wall thickness becomes thicker. In addition, the lower portion 5a of the synthetic resin pipe 5
Then, the resistance between the supporter ring 2 and the forming tube 3 decreases, and the wall thickness becomes thinner due to the tensile force, and as shown in FIG. The difference in wall thickness becomes smaller.
更に、この合成樹脂管５がサポータリング２とフォーミ
ングチューブ３とに接触して摺動する間に、上側部分５
ｂは縮径されて肉厚が厚くなり、下側部分５ａはほとん
ど縮径されないので肉厚はほとんど変化しない。このこ
とにより、水槽Ｓ内の冷却水Ｗで冷却された合成樹脂管
６は第３図に示すように上側部分６ｂと下側部分６ａと
は均一な肉厚となる。Further, while the synthetic resin pipe 5 is sliding in contact with the supporter ring 2 and the forming tube 3, the upper portion 5
b is reduced in diameter and becomes thicker, and the lower part 5a is hardly reduced in diameter, so its thickness hardly changes. As a result, the synthetic resin pipe 6 cooled by the cooling water W in the water tank S has a uniform thickness in the upper part 6b and the lower part 6a, as shown in FIG.
このことによって、周方向における各部分の肉厚が調整
される。This allows the thickness of each portion in the circumferential direction to be adjusted.
その結果、周方向の肉厚が均一化された合成樹脂管６を
得ることができる。As a result, a synthetic resin pipe 6 having a uniform circumferential wall thickness can be obtained.
したがって、合成樹脂管１の肉厚を調整して均一化させ
るときに、複雑な操作を行う必要がなく、合成樹脂管１
の薄肉な側から厚肉な側へ向けてフォーミングチューブ
を移動させるという簡単な操作で、合成樹脂管１の周方
向における肉厚の調整を行うことができる。Therefore, when adjusting and making the wall thickness of the synthetic resin pipe 1 uniform, there is no need to perform complicated operations.
The thickness of the synthetic resin pipe 1 in the circumferential direction can be adjusted by a simple operation of moving the forming tube from the thinner side to the thicker side.
このことによって、容易にこの合成樹脂管１の肉厚の均
一化を行うことができる。As a result, the thickness of the synthetic resin pipe 1 can be easily made uniform.
尚、上記した実施例では、押出成形機の金型４から押出
された合成樹脂管１の周方向における肉厚が、下側部分
１ａで厚くなるときについて説明したが、これに限らず
、例えば、押出成形機の金型４から押出された合成樹脂
管１の周方向における肉厚が、上側部分で厚くなるとき
にも適用できる。In addition, in the above-mentioned embodiment, the case where the wall thickness in the circumferential direction of the synthetic resin pipe 1 extruded from the mold 4 of the extrusion molding machine becomes thicker at the lower part 1a is explained, but the invention is not limited to this, for example. This method can also be applied when the thickness of the synthetic resin tube 1 extruded from the mold 4 of an extrusion molding machine in the circumferential direction becomes thicker at the upper portion.
この場合は、サポータリング２の軸芯に対してフォーミ
ングチューブ３の軸芯を、合成樹脂管１の上方向にずら
すとよい。In this case, it is preferable to shift the axis of the forming tube 3 upward with respect to the axis of the supporter ring 2.
この他、押出成形機の金型４から押出された合成樹脂管
１の周方向における肉厚が、左側あるいは右側のいずれ
かの部分で厚くなるときには、サポータリング２の軸芯
に対してフォーミングチューブ３の軸芯を、合成樹脂管
１の右方向あるいは左方向にずらすとよい。In addition, when the wall thickness in the circumferential direction of the synthetic resin tube 1 extruded from the mold 4 of the extrusion molding machine becomes thicker on either the left or right side, the forming tube 3 may be shifted to the right or left of the synthetic resin pipe 1.
また、押出成形機の金型４から押出された合成樹脂管１
の周方向における肉厚が斜め上下左右側いずれかの部分
で厚くなるときには、サポータリング２の軸芯に対して
フォーミングチューブ３の軸芯を、合成樹脂管１の肉厚
の厚い方向の斜め上下左右いずれかの方向にずらすとよ
い。In addition, the synthetic resin pipe 1 extruded from the mold 4 of the extrusion molding machine
When the wall thickness in the circumferential direction becomes thicker diagonally above, below, left, or right, the axis of the forming tube 3 should be moved diagonally above and below in the thicker direction of the synthetic resin tube 1 with respect to the axis of the supporting ring 2. It is best to shift it to either the left or right direction.
尚、フォーミングチューブ３をずらすには、冷却水Ｗが
入っている水槽Ｓに対するフォーミングチューブ３の取
付は位置をずらすことが最も簡単であるが、これに限ら
ず、フォーミングチューブ３を水槽Ｓに固定したままの
状態で、水槽Ｓ全体をサポータリング２の軸芯に対して
、合成樹脂管１の押出方向に対して直角に上下左右及び
斜め方向に移動できるようにしてもよい。Note that the easiest way to move the forming tube 3 is to shift the position of the forming tube 3 in the water tank S containing the cooling water W, but this is not limited to fixing the forming tube 3 in the water tank S. The entire water tank S may be made to be able to move vertically, horizontally, and diagonally at right angles to the extrusion direction of the synthetic resin tube 1 with respect to the axis of the supporter ring 2 while remaining in this state.
（発明の効果）
以上説明したように、この発明は、押出成形によって円
筒形状に押し出される合成樹脂管の内径をサポータリン
グで整え、その後に合成樹脂管の外径をフォーミングチ
ューブで整えるようになした合成樹脂管の成形方法にお
いて、前記サポータリングの軸芯に対してフォーミング
チューブの軸芯を、合成樹脂管の薄肉な側から厚肉な側
に向けてずらすことにより、合成樹脂管の肉厚を調整し
て均一化させるものであるから、以下に述べる効果を奏
する。(Effects of the Invention) As explained above, in the present invention, the inner diameter of a synthetic resin pipe extruded into a cylindrical shape by extrusion molding is adjusted using a support ring, and then the outer diameter of the synthetic resin pipe is adjusted using a forming tube. In the synthetic resin pipe forming method, the wall thickness of the synthetic resin pipe is adjusted by shifting the axis of the forming tube from the thin wall side of the synthetic resin pipe to the thick wall side with respect to the axis of the supporting ring. Since it adjusts and makes it uniform, it produces the effects described below.
すなわち、合成樹脂管の肉厚を調整して均一化させると
きに、複雑な操作を行う必要がなく、簡単に合成樹脂管
の周方向における肉厚の調整を行樹脂管の肉厚の均一化
を行うことができるので、不良品の発生が少なく合成樹
脂管を効率よく製造できる。In other words, when adjusting and making the wall thickness of the synthetic resin pipe uniform, there is no need to perform complicated operations, and the wall thickness can be easily adjusted in the circumferential direction of the synthetic resin pipe to make the wall thickness of the resin pipe uniform. As a result, synthetic resin pipes can be efficiently manufactured with fewer defective products.
第１図はこの発明に係る合成樹脂管の成形方法の実施態
様を示す説明断面図、第２図は第１図における合成樹脂
管のｎ−■線断面図、第３図は第１図における合成樹脂
管のｍ−ｍ線断面図、第４図はこの発明の成形方法を実
施する以前の合成樹脂管の成形状態を示す説明断面図、
第５図は第４図における合成樹脂管のＶ−Ｖ線断面図、
第６図は第４図における合成樹脂管のＶＩ−Ｖｌ線断面
図である。
１．５．６・・・合成樹脂管
２・・・サポータリング
３・・・フォーミングチューブ
特許出願人 積水化学工業株式会社
代表者 廣１）馨FIG. 1 is an explanatory cross-sectional view showing an embodiment of the synthetic resin pipe molding method according to the present invention, FIG. 2 is a cross-sectional view taken along line n-■ of the synthetic resin pipe in FIG. 1, and FIG. FIG. 4 is an explanatory sectional view showing the molded state of the synthetic resin pipe before the molding method of the present invention is carried out; FIG.
Figure 5 is a sectional view taken along the line V-V of the synthetic resin pipe in Figure 4;
FIG. 6 is a sectional view taken along the line VI-Vl of the synthetic resin pipe in FIG. 4. 1.5.6...Synthetic resin pipe 2...Supporting ring 3...Forming tube Patent applicant Sekisui Chemical Co., Ltd. Representative Hiroshi 1) Kaoru
Claims (1)
の内径をサポータリングで整え、その後に合成樹脂管の
外径をフォーミングチューブで整えるようになした合成
樹脂管の成形方法において、 前記サポータリングの軸芯に対してフォー ミングチューブの軸芯を、合成樹脂管の薄肉な側から厚
肉な側へ向けてずらすことにより、合成樹脂管の肉厚を
調整して均一化させることを特徴とする合成樹脂管の成
形方法。[Claims] 1) Molding of a synthetic resin pipe in which the inner diameter of the synthetic resin pipe extruded into a cylindrical shape is adjusted using a support ring, and then the outer diameter of the synthetic resin pipe is adjusted using a forming tube. In the method, the thickness of the synthetic resin pipe is adjusted and made uniform by shifting the axis of the forming tube from the thinner side of the synthetic resin pipe to the thicker side with respect to the axis of the supporting ring. A method for molding a synthetic resin pipe, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2241744A JPH04119818A (en) | 1990-09-11 | 1990-09-11 | Molding method of synthetic resin tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2241744A JPH04119818A (en) | 1990-09-11 | 1990-09-11 | Molding method of synthetic resin tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04119818A true JPH04119818A (en) | 1992-04-21 |
Family
ID=17078900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2241744A Pending JPH04119818A (en) | 1990-09-11 | 1990-09-11 | Molding method of synthetic resin tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04119818A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006049660B3 (en) * | 2006-10-18 | 2008-02-14 | Inoex Gmbh | Assembly to extrude thermoplastic pipes has form chamber with adjustable radial inserts |
| DE102006051103A1 (en) * | 2006-10-25 | 2008-04-30 | Inoex Gmbh | Extrusion device for extruding hollow thermoplastic rods has an extrusion tool and a calibrating device to be delivered on-axis onto the extrusion tool |
-
1990
- 1990-09-11 JP JP2241744A patent/JPH04119818A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006049660B3 (en) * | 2006-10-18 | 2008-02-14 | Inoex Gmbh | Assembly to extrude thermoplastic pipes has form chamber with adjustable radial inserts |
| EP1914060A2 (en) | 2006-10-18 | 2008-04-23 | INOEX GmbH | Device for extruding hollow rods |
| EP1914060A3 (en) * | 2006-10-18 | 2009-03-25 | INOEX GmbH | Device for extruding hollow rods |
| DE102006051103A1 (en) * | 2006-10-25 | 2008-04-30 | Inoex Gmbh | Extrusion device for extruding hollow thermoplastic rods has an extrusion tool and a calibrating device to be delivered on-axis onto the extrusion tool |
| EP1923199A2 (en) | 2006-10-25 | 2008-05-21 | INOEX GmbH | Device for extruding hollow rods |
| EP1923199A3 (en) * | 2006-10-25 | 2009-03-25 | INOEX GmbH | Device for extruding hollow rods |
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