CLOSING DEVICE FOR INJECTION MOLDING MACHINE
PROBLEM TO BE SOLVED: To perform an accurate injection compression molding. SOLUTION: In a closing state in which almost no closing force is applied, a solenoid (a) of a solenoid operable switch-over valve 8 is deenergized, and fused resin is injected from an injection device 14 into a cavity by vir...
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| creator | IKEDA KAZUHIRO YAMADA KATSUAKI IGARASHI KAZUYOSHI |
| description | PROBLEM TO BE SOLVED: To perform an accurate injection compression molding. SOLUTION: In a closing state in which almost no closing force is applied, a solenoid (a) of a solenoid operable switch-over valve 8 is deenergized, and fused resin is injected from an injection device 14 into a cavity by virtue of the forward movement of an injection screw. This resin pressure opens up the parting surfaces of molds to produce a compression margin. When an injection screw moves to a preset position, a piston rod 20r of an auxiliary cylinder 20 is moved rightward by virtue of the operation of an electric motor 25. This press sends a working fluid in an auxiliary fluid chamber 20a of the auxiliary cylinder 20 into a closing side fluid chamber 1a of a closing cylinder 1, and the working fluid so sent moves a piston rod 1r rightward, and therefore the molds are closed by a predetermined pressure over the compression margin. Since the auxiliary cylinder 20 is constructed to be operated by the electric motor 25, the position and moving speed of a cross head 2a can be controlled in many steps with accuracy. |
| format | Patent |
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SOLUTION: In a closing state in which almost no closing force is applied, a solenoid (a) of a solenoid operable switch-over valve 8 is deenergized, and fused resin is injected from an injection device 14 into a cavity by virtue of the forward movement of an injection screw. This resin pressure opens up the parting surfaces of molds to produce a compression margin. When an injection screw moves to a preset position, a piston rod 20r of an auxiliary cylinder 20 is moved rightward by virtue of the operation of an electric motor 25. This press sends a working fluid in an auxiliary fluid chamber 20a of the auxiliary cylinder 20 into a closing side fluid chamber 1a of a closing cylinder 1, and the working fluid so sent moves a piston rod 1r rightward, and therefore the molds are closed by a predetermined pressure over the compression margin. Since the auxiliary cylinder 20 is constructed to be operated by the electric motor 25, the position and moving speed of a cross head 2a can be controlled in many steps with accuracy.</description><edition>6</edition><language>eng</language><subject>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</subject><creationdate>1999</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19990126&DB=EPODOC&CC=JP&NR=H1119994A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19990126&DB=EPODOC&CC=JP&NR=H1119994A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>IKEDA KAZUHIRO</creatorcontrib><creatorcontrib>YAMADA KATSUAKI</creatorcontrib><creatorcontrib>IGARASHI KAZUYOSHI</creatorcontrib><title>CLOSING DEVICE FOR INJECTION MOLDING MACHINE</title><description>PROBLEM TO BE SOLVED: To perform an accurate injection compression molding. SOLUTION: In a closing state in which almost no closing force is applied, a solenoid (a) of a solenoid operable switch-over valve 8 is deenergized, and fused resin is injected from an injection device 14 into a cavity by virtue of the forward movement of an injection screw. This resin pressure opens up the parting surfaces of molds to produce a compression margin. When an injection screw moves to a preset position, a piston rod 20r of an auxiliary cylinder 20 is moved rightward by virtue of the operation of an electric motor 25. This press sends a working fluid in an auxiliary fluid chamber 20a of the auxiliary cylinder 20 into a closing side fluid chamber 1a of a closing cylinder 1, and the working fluid so sent moves a piston rod 1r rightward, and therefore the molds are closed by a predetermined pressure over the compression margin. Since the auxiliary cylinder 20 is constructed to be operated by the electric motor 25, the position and moving speed of a cross head 2a can be controlled in many steps with accuracy.</description><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING</subject><subject>PERFORMING OPERATIONS</subject><subject>SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR</subject><subject>SHAPING OR JOINING OF PLASTICS</subject><subject>TRANSPORTING</subject><subject>WORKING OF PLASTICS</subject><subject>WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1999</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNBx9vEP9vRzV3BxDfN0dlVw8w9S8PTzcnUO8fT3U_D193EBSfo6Ont4-rnyMLCmJeYUp_JCaW4GBTfXEGcP3dSC_PjU4oLE5NS81JJ4rwAPQ0NDS0tLE0djIpQAAESbJN8</recordid><startdate>19990126</startdate><enddate>19990126</enddate><creator>IKEDA KAZUHIRO</creator><creator>YAMADA KATSUAKI</creator><creator>IGARASHI KAZUYOSHI</creator><scope>EVB</scope></search><sort><creationdate>19990126</creationdate><title>CLOSING DEVICE FOR INJECTION MOLDING MACHINE</title><author>IKEDA KAZUHIRO ; YAMADA KATSUAKI ; IGARASHI KAZUYOSHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPH1119994A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1999</creationdate><topic>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING</topic><topic>PERFORMING OPERATIONS</topic><topic>SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR</topic><topic>SHAPING OR JOINING OF PLASTICS</topic><topic>TRANSPORTING</topic><topic>WORKING OF PLASTICS</topic><topic>WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</topic><toplevel>online_resources</toplevel><creatorcontrib>IKEDA KAZUHIRO</creatorcontrib><creatorcontrib>YAMADA KATSUAKI</creatorcontrib><creatorcontrib>IGARASHI KAZUYOSHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>IKEDA KAZUHIRO</au><au>YAMADA KATSUAKI</au><au>IGARASHI KAZUYOSHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>CLOSING DEVICE FOR INJECTION MOLDING MACHINE</title><date>1999-01-26</date><risdate>1999</risdate><abstract>PROBLEM TO BE SOLVED: To perform an accurate injection compression molding. SOLUTION: In a closing state in which almost no closing force is applied, a solenoid (a) of a solenoid operable switch-over valve 8 is deenergized, and fused resin is injected from an injection device 14 into a cavity by virtue of the forward movement of an injection screw. This resin pressure opens up the parting surfaces of molds to produce a compression margin. When an injection screw moves to a preset position, a piston rod 20r of an auxiliary cylinder 20 is moved rightward by virtue of the operation of an electric motor 25. This press sends a working fluid in an auxiliary fluid chamber 20a of the auxiliary cylinder 20 into a closing side fluid chamber 1a of a closing cylinder 1, and the working fluid so sent moves a piston rod 1r rightward, and therefore the molds are closed by a predetermined pressure over the compression margin. Since the auxiliary cylinder 20 is constructed to be operated by the electric motor 25, the position and moving speed of a cross head 2a can be controlled in many steps with accuracy.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| 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 |
| title | CLOSING DEVICE FOR INJECTION MOLDING MACHINE |
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