AN APPARATUS FOR AND METHOD OF VACUUM FORMING OF SYNTHETIC RESIN PRODUCTS

• Main Authors: KENICHI CHUJO, TAMIO FURUYA, KEIICHI KIKAWA, AKIHIRO KAMESHIMA, SATORU IRIYAMA
• Format: Patent
• Language: English
• Published: 31.10.2005
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A VACUUM FORMING APPARATUS (10) HAS A FIRST MOLD (12) AND A SECOND MOLD (14), THE FIRST MOLD (12) INCLUDING A FORMING SURFACE (16). THE FIRST MOLD (12) HAS A HOLLOW SPACE (20) DEFINED THEREIN AND COMMUNICATING WITH THE FORMING SURFACE (16) THROUGH HOLES (24) DEFINED IN THE FIRST MOLD (12). THE HOLLOW SPACE (20) IS CONNECTED TO A VACUUM PUMP (22) FOR DEVELOPING A VACUUM IN THE HOLLOW SPACE (20) TO ATTRACT A SHEET (38) AGAINST THE FORMING SURFACE (16) THROUGH THE HOLES (24). THE SECOND MOLD (14) HAS A PRESSER (26) INCLUDING A CYLINDER (28) WHICH DISPLACES A CUTTER (32) HAVING A SERRATED TRIMMING BLADE (30) OF THE SECOND MOLD (14). THE PRESSER (26) HAS AN UPPER GROOVE (36) WHICH ACCOMMODATES TEETH OF THE SERRATED TRIMMING BLADE (30). THE FIRST MOLD (12) HAS A LOWER GROOVE (34) FOR RECEIVING THE TEETH OF THE SERRATED TRIMMING BLADE (30) WHEN IT IS DISPLACED DOWNWARDLY BY THE CYLINDER (28). (FIGURE 1)