JPS57116616A - Forming method for independent arc form corrugate plastic pipe - Google Patents
Forming method for independent arc form corrugate plastic pipeInfo
- Publication number
- JPS57116616A JPS57116616A JP56003518A JP351881A JPS57116616A JP S57116616 A JPS57116616 A JP S57116616A JP 56003518 A JP56003518 A JP 56003518A JP 351881 A JP351881 A JP 351881A JP S57116616 A JPS57116616 A JP S57116616A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- parts
- mold
- die
- controller
- 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
- 238000000034 method Methods 0.000 title abstract 2
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
- B29C49/0021—Making articles of indefinite length, e.g. corrugated tubes using moulds or mould parts movable in a closed path, e.g. mounted on movable endless supports
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
- B29C2049/787—Thickness
- B29C2049/7871—Thickness of the extruded preform thickness
-
- 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
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/006—Using vacuum
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/18—Pleated or corrugated hoses
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
PURPOSE:To obtain a corrugated pipe uniform in cross section and wall thickness by a method wherein the speed of a mold piece rotated endlessly is retarded at the parts corresponding to ridge parts of the corrugated pipe and is accelerated at the part corresponding to groove parts of the pipe. CONSTITUTION:A molten plastic is extruded from a die of a die head 1 in the shape of a pipe 2, and halved mold pieces 3, 3' are mated to each other to constitute a circular shaped molding tunnel immediately before the pipe 2 is extruded from the die. When forming the pipe by pressing it against the mold pieces under the effect of an air pressure or a vacuum, the mold pieces is moved more slowly at the ridge parts and faster at the groove parts by a system including a contacting element 8 which detects the corrugated condition of the mold surface, a variable resistor 9 for generating a voltage according to the displacement of the element 8, a fine adjustment primary controller 10 for controlling a driving motor 7 in accordance with the voltage generated by the resistor 9, and a secondary controller 11 for controlling the motor 7 in response to a signal fed from controller 10.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56003518A JPS57116616A (en) | 1981-01-13 | 1981-01-13 | Forming method for independent arc form corrugate plastic pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56003518A JPS57116616A (en) | 1981-01-13 | 1981-01-13 | Forming method for independent arc form corrugate plastic pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57116616A true JPS57116616A (en) | 1982-07-20 |
Family
ID=11559581
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56003518A Pending JPS57116616A (en) | 1981-01-13 | 1981-01-13 | Forming method for independent arc form corrugate plastic pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57116616A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4988466A (en) * | 1987-02-19 | 1991-01-29 | Uponor N.V., Emmaplein | Method and an apparatus for the production of ribbed pipes |
-
1981
- 1981-01-13 JP JP56003518A patent/JPS57116616A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4988466A (en) * | 1987-02-19 | 1991-01-29 | Uponor N.V., Emmaplein | Method and an apparatus for the production of ribbed pipes |
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