INJECTION COMPRESSION MOLDING EQUIPMENT

• Main Author: NISHIMAKI TAKASHI
• Format: Patent
• Language: English
• Published: 21.09.1992
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; 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

PURPOSE:To simplify a mechanism by unifying a compression equipment and an ejector while improving parallel ejection accuracy by using the ejector as one-point ejection. CONSTITUTION:The subject injection compression molding equipment has a first template 24, a cavity 52, a core 53 detachably disposed while being oppositely faced to said cavity 52 and a second template 23. A piston 32 for injection compression is arranged detachably to either one of said second template 23, an ejector rod 45 is disposed slidably on the inner circumferential side of said piston 32 for injection compression, and moved by oil pressure and said core 53 is projected. Said ejector rod 45 has a large diametral section 47 and a small diametral section 48 in said piston 32 for injection compression, and said large diametral section 47 constitutes a projecting surface while an engaging surface 49 is organized between the large diametral section 47 and the small diametral section 48. Since the ejector rod 45 has the same wide plane as the piston 32 for injection compression, rectilinear propagation properties are improved, the effect of eccentric resin pressure is prevented, and the accuracy of a molded form is enhanced.