JPS6129439B2 - - Google Patents
Info
- Publication number
- JPS6129439B2 JPS6129439B2 JP52016118A JP1611877A JPS6129439B2 JP S6129439 B2 JPS6129439 B2 JP S6129439B2 JP 52016118 A JP52016118 A JP 52016118A JP 1611877 A JP1611877 A JP 1611877A JP S6129439 B2 JPS6129439 B2 JP S6129439B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- connecting rib
- inner tube
- extrusion molding
- rib
- 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
- 238000001125 extrusion Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000011347 resin Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 238000000465 moulding Methods 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Thermal Insulation (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Description
【発明の詳細な説明】
本発明は中空層を具えた多重管に関するもので
ある。従来から中空層を具えた多重管には空間部
が存在するが故に断熱性が良好と認められ乍ら、
その接続工事が容易でなかつたが為に、一般に使
用が普及しなかつた。然し中空層を具えた多重管
であつても、その端末を加工して内側管のみを露
出させれば、その露出させた端末部は通常の管と
全く同様となる故、これに通常の管に対して使用
する標準継手を使用し、通常の工法で接続工事が
施工可能となる。然るに、中空層を具えた多重管
２０ａは第１図に示す如く一体構造であり、之の
接続工事に簡単な手動治工具のみを携帯する施工
現場では、多重管端末の外側管２１ａと連接リブ
２５ａとを切削除去して内側管２９ａのみを露出
させる工事を施すことは容易でない欠点があつ
た。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-tube with hollow layers. Although multilayer pipes with hollow layers have traditionally been recognized as having good insulation properties due to the presence of voids,
Because the connection work was not easy, its use did not become widespread. However, even if it is a multilayer tube with a hollow layer, if the end is processed to expose only the inner tube, the exposed end will be exactly the same as a normal tube, so it cannot be used as a normal tube. Connecting work can be carried out using standard fittings and using normal construction methods. However, the multiple pipe 20a with the hollow layer has an integral structure as shown in FIG. 25a to expose only the inner tube 29a has the drawback that it is not easy.
本発明は上記の欠点を除き、施工現場で特殊な
工具や継手を用いることなく、簡単に中空層を具
える多重管端末の外側管と連接リブを除去して内
側管を露出せしめ、以て通常の標準継手を使用
し、通常の工法で接続工事が施工できるところの
中空層を具えた多重管を容易に製造することがで
きる方法である。 The present invention eliminates the above-mentioned drawbacks, and without using special tools or joints at the construction site, easily removes the outer tube and connecting rib of the multi-tube terminal with a hollow layer to expose the inner tube. This is a method that can easily manufacture multiple pipes with hollow layers that can be connected using standard joints and using standard construction methods.
添付図面に示す実施例によつて本発明を詳述す
ること以下の通り。 The invention will now be described in detail by means of embodiments illustrated in the accompanying drawings.
第２図及び第３図に示すところは、本発明に係
る、一体成型の中空層を具えた多重管２０の断面
図にして、外側管２１と内側管２９とがその間に
所望の空〓たる中空層３０を隔てて同心円形状を
保つように連接リブ２５を形成した多重管２０の
構造を示すものであつて、外側管２１の内周面２
２と連接リブ２５の外側端面２４とが相互に軟着
状態２３であり、且つ連接リブ２５の内側端面２
６と内側管２９の外周面２８とが相互に軟着状態
２７である。 2 and 3 are cross-sectional views of a multiple tube 20 having an integrally molded hollow layer according to the present invention, with an outer tube 21 and an inner tube 29 having a desired air space between them. This figure shows the structure of a multiple pipe 20 in which connecting ribs 25 are formed so as to maintain a concentric circular shape across a hollow layer 30, and the inner circumferential surface 2 of the outer pipe 21 is
2 and the outer end surface 24 of the connecting rib 25 are in a soft state 23, and the inner end surface 24 of the connecting rib 25
6 and the outer circumferential surface 28 of the inner tube 29 are in a soft contact state 27 with each other.
そして、第５図に示すところは、上述の如き軟
着状態として一体成型する多重管２０の製造方法
の一実施例の概要を示すものであつて、第１押出
成型機３１により、内側管２９の外周面において
円周方向に適宜間隔をもつた複数の連接リブ２５
を具えた内側管２９（第３図参照）を押出す。こ
のとき、第１押出成型機３１におけるダイ３２は
一例として第６図に示す如く、内側管２９に成型
されるべき溶融樹脂の流路３３と連接リブ２５に
成型されるべき溶融樹脂の流路３４とを夫々別個
に設け、夫々を所定の形状に成型した後、所要の
温度低下をなさしめ、次で内側管の外周面２８と
連接リブの内側端面２６とをダイ３２内における
連接点３５以後当接せしめる。このように、加熱
混練され成型温度以上となつた溶融樹脂をもつ
て、内側管２９相当物と、連接リブ２５相当物と
の両者を別個に成型した後、両者を当接せしめて
もその当接点における強度が構造体強度と等しく
なることなく、両者を引張したときその当接線で
必らず破壊が生じるような軟着状態となる所定の
温度以下に溶融樹脂温度が下がる連接点２５にお
いて、両者を当接し軟着せしめるのである。従つ
て両者は多少の衝撃では離れることがない反面、
相当な外力を加えるときは、両者の連接面におい
て先づ破壊が生じる程度に一体化された構造とさ
れる。 FIG. 5 shows an outline of an embodiment of a method for manufacturing the multiple tube 20 which is integrally molded in a soft state as described above. A plurality of connecting ribs 25 at appropriate intervals in the circumferential direction on the outer peripheral surface of the
An inner tube 29 (see FIG. 3) is extruded. At this time, the die 32 in the first extrusion molding machine 31 has a flow path 33 for the molten resin to be molded into the inner tube 29 and a flow path for the molten resin to be molded into the connecting rib 25, as shown in FIG. 34 are provided separately, and after molding each into a predetermined shape, the required temperature is lowered, and then the outer peripheral surface 28 of the inner tube and the inner end surface 26 of the connecting rib are connected to the connecting point 35 in the die 32. From now on, let them come into contact. In this way, even if the inner tube 29 equivalent and the connecting rib 25 equivalent are separately molded using molten resin heated and kneaded to a temperature higher than the molding temperature, and then brought into contact with each other, the contact between the inner tube 29 and the connecting rib 25 is At the connecting point 25, where the strength at the contact point is not equal to the structural strength, and the temperature of the molten resin falls below a predetermined temperature at which a soft bond state occurs where, when both are pulled, destruction will inevitably occur at the line of contact, The two are brought into contact and made to adhere softly. Therefore, while the two will not be separated by a slight shock,
When a considerable external force is applied, the structure is such that they are integrated to such an extent that failure occurs first at the connecting surfaces.
上述の如く内側管２９と連接リブ２５とが相互
に軟着状態で一体的に成型された、第３図に示す
如き断面形状のものを、第５図に示すように第２
押出成型機３６のクロスヘツド３７に入れ、他方
第２押出成型機３６で外側管２１に成型された溶
融樹脂をクロスヘツド３７へ圧入する。従つて、
クロスヘツド３７内で、前記連接リブ２５の外側
端面２４に前記外側管２１の内側面２３を軟着せ
しめることができ、多重管２０の成型を完了す
る。 As described above, the inner tube 29 and the connecting rib 25 are molded integrally with each other in a soft state, and the cross-sectional shape shown in FIG.
The molten resin is put into the crosshead 37 of the extrusion molding machine 36, and the molten resin molded into the outer tube 21 by the second extrusion molding machine 36 is forced into the crosshead 37. Therefore,
Inside the crosshead 37, the inner surface 23 of the outer tube 21 can be softly attached to the outer end surface 24 of the connecting rib 25, and the molding of the multiple tube 20 is completed.
上述の如く本発明は、外側管２１と、内側管２
９と、前記両管２１，２９の空〓３０を保つため
の連接リブ２５とよりなる一体成型の多重管２０
において、前記外側管２１の内周面２２と連接リ
ブ２５の外側端面２４との相互、及び連接リブ２
５の内側端面２６と内側管２９の外周面２８との
相互が、何れも分離可能な軟着状態で一体に成型
した構造とする為に、２台の押出成型機３１，３
６を用い、第１押出成型機３１において内側管２
９と連接リブ２５とを夫々別に成型し、その後、
内側管２９と連接リブ２５とを溶着して一体的に
押出し、更に第２押出成型機３６で押出した外側
管２１と前記一体的とされた内側管２９及び連接
リブ２５との両者を第２押出成型機に付設したク
ロスヘツド内で一体として多重管を成型すること
により、外側管２１と連接リブ２５との相互及び
連接リブ２５と内側管２９との相互が分離可能な
一体構造とされたことを特徴とする多重管の製造
方法である。 As described above, the present invention includes the outer tube 21 and the inner tube 2.
9 and a connecting rib 25 for keeping both the tubes 21 and 29 empty 30.
, the inner peripheral surface 22 of the outer tube 21 and the outer end surface 24 of the connecting rib 25 are connected to each other, and the connecting rib 2
In order to obtain a structure in which the inner end surface 26 of the tube 5 and the outer peripheral surface 28 of the inner tube 29 are integrally molded in a soft state that allows them to be separated, two extrusion molding machines 31 and 3 are used.
6, the inner tube 2 is
9 and the connecting rib 25 are molded separately, and then,
The inner tube 29 and the connecting rib 25 are welded and extruded integrally, and the outer tube 21 extruded by the second extrusion molding machine 36 and both the inner tube 29 and the connecting rib 25 that have been made integral are molded into a second extruder. By integrally molding multiple tubes within a crosshead attached to an extrusion molding machine, an integral structure is formed in which the outer tube 21 and the connecting rib 25 and the connecting rib 25 and the inner tube 29 can be separated from each other. This is a method for manufacturing a multi-tube, which is characterized by:
この様に、押出成型機３１，３６を用い、内側
管２９、連接リブ２５及び外側管２１を別個に成
型してダイ３２及びクロスヘツド３７内で一体と
する故、一体成型と同様に容易に製造することが
でき、且つ、この多重管２０は内側管２９、連接
リブ２５及び外側管２１の各相互間の接着強度が
一体成型よりも弱く、必要に応じ、外側管２１を
連接リブ２５の外側端面２４から容易に分離する
ことができ、又外側管２１と連接リブ２５との両
者を内側管２９の外周面２８から容易に取除くこ
とができるから、携帯用手動治具をもつて内側管
２９の所望部分を容易に露出せしめ、この部分に
標準接手を通常の工法で接続施工ができるのであ
る。 In this way, the inner tube 29, the connecting rib 25, and the outer tube 21 are separately molded using the extrusion molding machines 31 and 36, and then integrated within the die 32 and the crosshead 37, so manufacturing is as easy as integral molding. In addition, in this multiple tube 20, the adhesive strength between the inner tube 29, the connecting rib 25, and the outer tube 21 is weaker than that of integral molding, and the outer tube 21 can be attached to the outside of the connecting rib 25 as necessary. Since it can be easily separated from the end surface 24 and both the outer tube 21 and the connecting rib 25 can be easily removed from the outer circumferential surface 28 of the inner tube 29, the inner tube can be removed using a portable manual jig. 29 can be easily exposed, and a standard joint can be connected to this part using normal construction methods.
第１図は従来の多重管断面図。第２図は本発明
に係る多重管の断面図にして、第３図は本考案に
係る多重管のリブ部拡大図。第４図は第６図のダ
イにより成形された内側管及びリブの断面図、第
５図は本考案に係る多重管の製造方法を実施した
場合の装置概略図にして、第６図は内側管及びリ
ブを成形するダイの要部断面図。
２０……多重管、２１……外側管、２２……外
側管内周面、２３……軟着部、２４……リブ外側
端面、２５……リブ、２６……リブ内側端面、２
７……軟着部、２８……内側管外周面、２９……
内側管、３０……中空層、３１……第１押出成型
機、３２……ダイ、３３，３４……溶融樹脂流
路、３５……連接点、３６……第２押出成型機、
３７……クロスヘツド。
FIG. 1 is a cross-sectional view of a conventional multiple pipe. FIG. 2 is a cross-sectional view of the multiple tube according to the present invention, and FIG. 3 is an enlarged view of the rib portion of the multiple tube according to the present invention. FIG. 4 is a cross-sectional view of the inner tube and ribs formed by the die of FIG. FIG. 2 is a cross-sectional view of a main part of a die for forming pipes and ribs. 20...Multiple tube, 21...Outer tube, 22...Outer tube inner peripheral surface, 23...Soft bonded portion, 24...Rib outer end surface, 25...Rib, 26...Rib inner end surface, 2
7... Soft fitting part, 28... Inner tube outer peripheral surface, 29...
Inner tube, 30... hollow layer, 31... first extrusion molding machine, 32... die, 33, 34... molten resin channel, 35... connection point, 36... second extrusion molding machine,
37...Crosshead.
Claims (1)
において内側管と連接リブとを夫々別に成型し、
その後、内側管と連接リブとを溶着して一体的に
押出し、更に第２押出成型機で押出した外側管と
前記一体的とされた内側管及び連接リブとの両者
を第２の押出成型機に付設したクロスヘツド内で
一体として多重管を成型することにより、外側管
と連接リブとの相互間及び連接リブと内側管との
相互間が分離可能な一体構造とされたことを特徴
とする多重管の製造方法。1 Using two extrusion molding machines, mold the inner tube and the connecting rib separately in the first extrusion molding machine,
Thereafter, the inner tube and the connecting rib are welded together and extruded as one body, and then the outer tube extruded in a second extruder and both the integral inner tube and connecting rib are then extruded in a second extruder. A multilayer tube characterized in that the outer tube and the connecting rib are integrally molded within a crosshead attached to the crosshead, thereby creating an integral structure in which the outer tube and the connecting rib can be separated from each other, and the connecting rib and the inner tube can be separated from each other. Method of manufacturing tubes.
Priority Applications (23)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1611877A JPS53101714A (en) | 1977-02-18 | 1977-02-18 | Multi piled synthetic resin pipe and it*s making method |
| AU25498/77A AU513896B2 (en) | 1976-05-27 | 1977-05-25 | Thermo-plastic multi wall pipes |
| DE19772723679 DE2723679A1 (en) | 1976-05-27 | 1977-05-25 | CONNECTING PIECE FOR MULTI-WALL THERMOPLASTIC PIPING AND PROCESS FOR ITS PRODUCTION |
| US05/800,427 US4157194A (en) | 1976-05-27 | 1977-05-25 | Thermoplastic multi-walled pipes |
| NZ184196A NZ184196A (en) | 1976-05-27 | 1977-05-25 | Thermoplastic multi-walled pipes and method of joining same to single walled thermoplastic pipe |
| IT7724053A IT1115482B (en) | 1976-05-27 | 1977-05-26 | PROCEDURE FOR THE PRODUCTION OF MULTI-WALL THERMOPLASTIC PIPES AND JOINT STRUCTURE FOR PIPES |
| CA279,182A CA1068621A (en) | 1976-05-27 | 1977-05-26 | Thermoplastic multi-walled pipes and a process and apparatus for producing the same |
| SE7706172A SE7706172L (en) | 1976-05-27 | 1977-05-26 | CONSTRUCTION FOR MULTI-WALLED FOR THERMOPLASTIC, AS WELL AS MANUFACTURE OF THE SAME |
| BR7703421A BR7703421A (en) | 1976-05-27 | 1977-05-26 | UNLAO JOINT FOR MULTIPLE WALL THERMOPLASTIC TUBES AND PRODUCTION PROCESS |
| NL7705902A NL7705902A (en) | 1976-05-27 | 1977-05-27 | PROCEDURE FOR MANUFACTURING A COUPLING BETWEEN MULTI-WALL PIPES OF PLASTIC, AS WELL AS A COUPLING OBTAINED BY APPLICATIONS OF THIS PROCESS. |
| FR7716413A FR2367599A1 (en) | 1976-05-27 | 1977-05-27 | MANUFACTURING PROCESS OF A MULTI-WALL PIPE IN THERMOPLASTIC MATERIAL |
| GB22512/77A GB1587227A (en) | 1976-05-27 | 1977-05-27 | Thermoplastics multiwalled pipes |
| BE178017A BE855164A (en) | 1976-05-27 | 1977-05-27 | SEAL FOR THERMOPLASTIC MULTI-WALL PIPES AND PROCESS FOR ITS PRODUCTION |
| PT66611A PT66611B (en) | 1976-05-27 | 1977-05-27 | A joint for thermoplastic multi-walled pipes and a processfor producing the same |
| IL52366A IL52366A (en) | 1976-07-01 | 1977-06-22 | Thermoplastic multi-walled pipes and a joint for the pipes,and a process for producing the same |
| OA56202A OA05690A (en) | 1976-05-27 | 1977-06-24 | Joint structure for multi-wall pipes and method of manufacturing. |
| LU77653A LU77653A1 (en) | 1976-05-27 | 1977-06-29 | |
| AT0467977A AT363284B (en) | 1976-05-27 | 1977-06-30 | THERMOPLASTIC MULTI-WALLED TUBE AND METHOD FOR THE PRODUCTION THEREOF |
| AR26828077A AR214415A1 (en) | 1976-07-01 | 1977-06-30 | THERMOPLASTIC CANO WITH MULTIPLE WALL AND PROCEDURE AND APPARATUS FOR ITS PREPARATION |
| EG52477A EG13139A (en) | 1977-02-18 | 1977-09-12 | Thermoplastic multi walled pipe and a process for producing the same |
| FR7803637A FR2367975A1 (en) | 1976-05-27 | 1978-02-09 | SEAL FOR MULTI-WALL PIPES IN PLASTIC MATERIAL |
| US05/962,781 US4236953A (en) | 1976-05-27 | 1978-11-21 | Process for producing thermoplastic multi-walled pipes |
| AU64029/80A AU528986B2 (en) | 1976-05-27 | 1980-10-31 | Process for producing joinable thermoplastic multi-walled pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1611877A JPS53101714A (en) | 1977-02-18 | 1977-02-18 | Multi piled synthetic resin pipe and it*s making method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS53101714A JPS53101714A (en) | 1978-09-05 |
| JPS6129439B2 true JPS6129439B2 (en) | 1986-07-07 |
Family
ID=11907593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1611877A Granted JPS53101714A (en) | 1976-05-27 | 1977-02-18 | Multi piled synthetic resin pipe and it*s making method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS53101714A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2692390T3 (en) * | 2011-04-18 | 2018-12-03 | Milliken & Company | Split conduit and procedure for its formation |
-
1977
- 1977-02-18 JP JP1611877A patent/JPS53101714A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS53101714A (en) | 1978-09-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4508368A (en) | Plastic pipe joint | |
| JP6666205B2 (en) | Method of manufacturing corrugated composite pipe | |
| JPH0145410B2 (en) | ||
| FI65729B (en) | SAFETY RING FOR SUSPENSION AV PLASTROER GENOM VAERMEFOGNING | |
| US4236953A (en) | Process for producing thermoplastic multi-walled pipes | |
| JPS6129439B2 (en) | ||
| JPH04501986A (en) | Welding sleeve and its manufacturing method | |
| US2909198A (en) | Spirally corrugated rubber tubing with intergral cylindrical end connectors | |
| JP2005125757A (en) | Method for producing tube resin joint and tube resin joint produced by the method | |
| JPH0638858B2 (en) | Multi-lumen catheter assembly and method of making same | |
| JPS61148036A (en) | Manufacture of double wall pipe | |
| JPS60161118A (en) | Manufacture of rubber or resin tubular product | |
| JP2756950B2 (en) | Method of manufacturing large diameter pipe joint having heating element | |
| JP2922251B2 (en) | Branch hose manufacturing method | |
| KR19990004028U (en) | Synthetic Resin Double Wall Smoothing Pipe Manufacturing Equipment | |
| JP2001141135A (en) | Structure of connection port part of synthetic resin flexible pipe | |
| JPH0238158Y2 (en) | ||
| JP2837730B2 (en) | Method for fusing thermoplastic resin tube and heater | |
| JPS629412B2 (en) | ||
| JPS6345939B2 (en) | ||
| JPH01178001A (en) | Manufacture of tube for vehicle tire | |
| JPH07171908A (en) | Production of flanged resin lining steel pipe | |
| JPH0244975Y2 (en) | ||
| KR0157200B1 (en) | Process for making laminated hose | |
| JPS6029625B2 (en) | Manufacturing method of thermoplastic resin branch pipe |