JPS5581120A - Method and apparatus for providing tube inside surface with cut groove - Google Patents
Method and apparatus for providing tube inside surface with cut grooveInfo
- Publication number
- JPS5581120A JPS5581120A JP15468478A JP15468478A JPS5581120A JP S5581120 A JPS5581120 A JP S5581120A JP 15468478 A JP15468478 A JP 15468478A JP 15468478 A JP15468478 A JP 15468478A JP S5581120 A JPS5581120 A JP S5581120A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- core
- inside surface
- cutting edges
- cut grooves
- 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.)
- Granted
Links
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
PURPOSE: To form cut grooves in the right positions of the inside surface of a tube by inserting a core having cutting edges projected on its outside surface into a moving tube.
CONSTITUTION: A tube 1 is squeezed flat and provided with a fold on its either end by rollers 7 each having a peripheral groove 8 in the central portion. Then the tube 1 advances while sliding along the outside surface of a core 2, with the holds 9 engaging corners 3' at both lateral edges of the core 2, so that the tube 3 advances without deviation in the circumferential direction. Because two cutting edges 11 are symmetrically projected on each of upper and lower faces of the core 2, the outside surface of the tube 1 is provided with cut grooves. Because the tube 1 is pressed by press rollers 12 arranged on the outside of the tube 1 and in register with the cutting edges 11, the tube 1 can be prevented from meandering and provided with cut grooves in the right positions.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15468478A JPS5581120A (en) | 1978-12-15 | 1978-12-15 | Method and apparatus for providing tube inside surface with cut groove |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15468478A JPS5581120A (en) | 1978-12-15 | 1978-12-15 | Method and apparatus for providing tube inside surface with cut groove |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5581120A true JPS5581120A (en) | 1980-06-18 |
JPS6259646B2 JPS6259646B2 (en) | 1987-12-11 |
Family
ID=15589650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15468478A Granted JPS5581120A (en) | 1978-12-15 | 1978-12-15 | Method and apparatus for providing tube inside surface with cut groove |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5581120A (en) |
-
1978
- 1978-12-15 JP JP15468478A patent/JPS5581120A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6259646B2 (en) | 1987-12-11 |
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