B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/937
B29C 17/00 (1980.01)
Patent
CA 1171220
ABSTRACT OF THE DISCLOSURE A method for forming a connecting sleeve having an internal groove at the end section of a tube made of crystalline or partially crystalline thermoplastic material in which the end section, which has a free frontal end, is heated to the deformation temperature, is then axially preliminary upset in a heatable upsetting device which defines an annular gap until the annular gap is filled, thus increasing the wall thickness of said end section, and is then shaped to form the connecting sleeve during axial displacement in a molding device and is finally cooled. In the method, the end section is heated to a processing temperature within the range of the deformation temperature, which is relatively narrow, and up to almost the crystalline melting temperature of the thermoplastic material, and when the end section reaches the processing temperature, the end section is preliminary upset in the preliminary upsetting device by the application of a first axial upsetting force so that the preliminary upsetting begins in the free frontal end of the end section and continues until the annular gap in the preliminary upsetting device is filled. The heated and preliminary upset end section is removed from the preliminary upsetting device. The so removed end section is brought immediately to a final shaping device, and an axial upsetting force is applied in the final shaping device to form the connecting sleeve while maintaining the temperature of the tube end at the processing temperature.
393174
Moffat & Co.
Rehau Plastiks Ag & Co.
LandOfFree
Method for forming a connecting sleeve having an internal... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for forming a connecting sleeve having an internal..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for forming a connecting sleeve having an internal... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1315962