Apparatus and method for making endless reinforced belts

摘要

A system, method and apparatus for making endless belts having a profile layer, a fully embedded, helically wound, cord layer, and a top layer. The apparatus has a rotatable mandrel with a profile complementary to the belt profile, two or one engagement rolls adjacent the mandrel to maintain forced, wrapped engagement of the profile layer on a portion thereof; a cord applicator which may include a heated blade that plows a groove in the profile layer into which the cord is laid and fused thereto. A laminator applies the top layer onto the reinforced carcass. A system of buffer rolls handles the loose portion of the profile layer or carcass guiding it.

主权项

1. A method of making an endless, reinforced, layered belt comprising;
providing an endless profile layer having a circumference and having a belt profile on the inside side and having a top side; providing a supply of top layer material suitable for laminating to said top side of said profile layer; providing a supply of continuous, tensile cord suitable for helical winding around said profile layer and embedding between said profile layer and said top layer; and engaging a wrap portion of said profile layer on a portion of a rotatable cylindrical mandrel having a mandrel profile complementary to said belt profile and a circumference less than that of said profile layer by forcibly engaging said profile layer on said mandrel; and with a remaining free portion of the profile layer not engaged on said mandrel; wherein said engaging is induced by pressing said profile layer onto said mandrel with an engaging roller; and helically applying at a predetermined cord helical spacing said tensile cord to said profile layer with a cord applicator positioned adjacent said wrap portion of said mandrel so that said cord is firmly attached to said profile layer before disengagement of the resulting reinforced carcass portion from the wrap portion of the mandrel; and applying and attaching said top layer material to said reinforced carcass with a laminator positioned adjacent said wrap portion of said mandrel to cover said helical cord and complete said belt.