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A molding apparatus and method of molding or casting liquid resins and the like, are provided which includes flexible molding means. In one form, the mold is composed of two endless flexible belts, each of which is driven in an endless path with a portion of each belt driven parallel to a portion of

A molding apparatus and method of molding or casting liquid resins and the like, are provided which includes flexible molding means. In one form, the mold is composed of two endless flexible belts, each of which is driven in an endless path with a portion of each belt driven parallel to a portion of the other belt and in contact therewith such that cavities formed in each belt come into alignment with each other when the belts make contact. Fast setting plastic liquid resin molding material is injected either at the side of or from the ends of the belts as they come together and flows into the cavities formed in the belts to continuously form a molded material or individual molded articles between the belts. After the molding material has solidified in the cavities between the belts, the belts are automatically driven apart and the molded articles removed from the cavities therebetween. In one form, removal of the molded articles is effected by a mechanical device or devices located at the exit end of the belts. In another form, a stationary scraping device or devices engages either or both belts and removes the molded articles therefrom. In yet another form, fluid under pressure is applied to the molded articles between the belts and blows or otherwise removes the articles therefrom. If the liquid is injected at temperature, the belts may be driven in a path through a tank of coolant liquid or fluid coolant material may be sprayed against the belts as they are driven.

대표청구항 ▼

An apparatus for continuously molding comprising in combination: a first endless flexible belt defining a first mold member containing a plurality of molding cavities formed in a major surface thereof and shaped for forming separate articles in each cavity, means operatively associated with said fir

An apparatus for continuously molding comprising in combination: a first endless flexible belt defining a first mold member containing a plurality of molding cavities formed in a major surface thereof and shaped for forming separate articles in each cavity, means operatively associated with said first belt member for guiding and driving said first belt member in an endless path, a second endless flexible belt member defining a second mold member, means for guiding and driving said second endless flexible belt mEmber in an endless path which extends so as to cause said second belt member to be driven closely adjacent and parallel to a portion of said first flexible belt member, and means for compressively engaging said first and second belt members together along portions thereof which extend parallel to each other, injection means for a liquid molding material, means for intermittently operating said injection means, means for supporting said injection means at a location to permit it to intermittently inject its molding material between said first and second flexible belt members to fill said cavities as said flexible belt members are brought together, and means for intermittently feeding and ejecting said liquid molding material from said injection means in synchronization with the driving movement of said first and second endless flexible belts in a manner to cause said molding material to fill each of the cavities formed between said first and second flexible belt members after said belt members are driven together, said molding material being operable to solidify within said cavities between said first and second belt members, and means for removing the moldings from between said flexible belt members beyond the path locations of said belt members where they are driven together to provide a plurality of moldings thereof formed between said flexible belt members.