| 摘要 |
PROBLEM TO BE SOLVED: To enhance the productivity of a cornice tube by allowing the arranging pattern of mold blocks to be changed in association with the change of the specification of the tube without making an arrangement, arbitrarily rearranging the pattern of the blocks without stopping a machine, and sending the blocks to a molding zone. SOLUTION: The method for manufacturing the cornice tube comprises the steps of selecting necessary unit mold blocks according to an arranging composition designated for the number and order of the types of the unit mold blocks MBa, MBb, MBc and MBd for forming a first mold block array 20 and second mold block array 22 corresponding to the shapes of the tubes, composing the mold block arrays 20, 22, transferring the arrays to a molding zone 14, extruding a molten resin from the extrusion die 25 of an extruder 26 between the array 20 and the array 22, molding the tube while generating a negative pressure in the closed mold while the array 20 and the array 22 are moved in the same direction, and sorting the block arrays returned from the molding zone to the arrays according to the types of the blocks. COPYRIGHT: (C)2003,JPO |
