Method of manufacturing a conveyor belt and an apparatus therefor
AssigneeMitsubishi Belting Ltd.
InventorsTakashi Masuda, Shigeyuki Sozaki, Masakatsu Ando, Hideo Oumi
Life of this patent
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Abstract
This invention involves manufacturing a conveyor belt by applying tension on a group of steel cords used as the belt tensile member, wrapping the tensioned steel cords with the rubber sheet to make a core body, sticking a based duck or a breaker and a covering rubber sheet in turn on said core body to build a belt, vulcanizing the belt and winding the resultant belt, in which the application of the tension to the group of steel cords is carried out by a plurality of pulleys on which hang a plurality of like weights respectively, and a winder.
Claims14
A method of manufacturing a conveyor belt having a plurality of longitudinal steel cord tensile members comprising the steps of:
- a. unwinding said tensile members from storage reels;
- b. placing the tensile members in a groove around the periphery of a feeding roll including at least one magnetic roll so as to retard their movement;
- c. hanging on said tensile members a plurality of pulleys, each having a weight attached thereto;
- d. applying a first rubber sheet to one side of said tensile members;
- e. applying a second rubber sheet to the other side of said tensile members after said first rubber sheet has been applied to said one side;
- f. compressing said rubber sheets to cause them to completely surround said tensile members to form a core body;
- g. applying a biased duck or breaker material to both sides of said core body;
- h. applying a rubber cover sheet to both sides of the belt;
- i. vulcanizing the belt;
- and
- j. winding said vulcanized belt onto a finish storage roll.
An apparatus for manufacturing a conveyor belt having a plurality of longitudinal steel cord tensile members comprising:
- a. storage means to store said tensile members;
- b. means to apply a constant tension to said tensile members as they are removed from said storage means, said constant tension means having a feeding roll assembly with at least one electromagnetic roll provided on its periphery with grooves of V-shaped cross section capable of receiving therein the tensile members of various diameter at any desired position in the groove and to thereby draw the tensile members toward the electromagnetic roll with a constant force to retard their movement, and a plurality of pulleys, each having a plurality of tensioning weights, said plurality of pulleys located downstream of said at least one electromagnetic roll;
- c. first means for applying a first rubber sheet to one side of said tensile members;
- d. second means for applying a second rubber sheet to the other side of said tensile members, said second means being displaced longitudinally with respect to said first means;
- e. means to compress said first and second rubber sheets to cause them to enclose said tensile members, to form a core body;
- f. means for applying a biased duck or breaker to both sides of said core body;
- g. means for applying a rubber cover sheet to both sides of said duck or breaker material;
- h. means for vulcanizing the constructed belt;
- and
- i. means for winding the vulcanized belt on a finish storage reel.
Dependencies are inferred from the claim text.