JPS57212040A - Degassing device for mold in molding machine - Google Patents

Degassing device for mold in molding machine

Info

Publication number
JPS57212040A
JPS57212040A JP56097538A JP9753881A JPS57212040A JP S57212040 A JPS57212040 A JP S57212040A JP 56097538 A JP56097538 A JP 56097538A JP 9753881 A JP9753881 A JP 9753881A JP S57212040 A JPS57212040 A JP S57212040A
Authority
JP
Japan
Prior art keywords
valve
degassing
molten material
cavity
passage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP56097538A
Other languages
Japanese (ja)
Other versions
JPS6116224B2 (en
Inventor
Takahiko Takeshima
Tadashi Ueki
Genzo Kawashima
Tsuneo Ueno
Masayuki Nishimoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ube Corp
Original Assignee
Ube Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ube Industries Ltd filed Critical Ube Industries Ltd
Priority to JP56097538A priority Critical patent/JPS57212040A/en
Publication of JPS57212040A publication Critical patent/JPS57212040A/en
Publication of JPS6116224B2 publication Critical patent/JPS6116224B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/34—Moulds having venting means

Abstract

PURPOSE:To prevent a molten material from penetrating into a valve body while achieving a favorable degassing, by a method wherein a degassing valve in an opened condition is so engaged to be energized in the direction of a closed condition, and the engagement is released simultaneously with a closing action to close the valve completely. CONSTITUTION:A fixed mold 1 and a movable mold 2 are clamped, the valve 6 is lowered against a tension spring 13, and it is held in the opened condition by engaging it with an engaging mechanism 14 which consists of a recessed part 16 of a valve rod 6d and a ball 19 energized by a compression spring 18 provided at a valve rod guide part 12. When a molten material is injected into a cavity 3, the gas in the cavity 3 is discharged through a degassing passage 4, a degassing groove 5, a passage 7, a valve chamber 10 and a gas discharging port 11 as the cavity 3 is filled with the molten material. Then, the molten material flowing upwards through the groove 5 comes in contact with the lower surface of a valve head part 6a and pushes the valve 6 upwards, whereby the engagement by the mechanism 14 is released and the valve 6 is lifted up by the tension spring 13 to bring the valve head part 6a into contact with a valve seat 9, resulting in that the part between the passage 7 and the valve chamber 10 is closed completely.
JP56097538A 1981-06-25 1981-06-25 Degassing device for mold in molding machine Granted JPS57212040A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56097538A JPS57212040A (en) 1981-06-25 1981-06-25 Degassing device for mold in molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56097538A JPS57212040A (en) 1981-06-25 1981-06-25 Degassing device for mold in molding machine

Publications (2)

Publication Number Publication Date
JPS57212040A true JPS57212040A (en) 1982-12-27
JPS6116224B2 JPS6116224B2 (en) 1986-04-28

Family

ID=14195017

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56097538A Granted JPS57212040A (en) 1981-06-25 1981-06-25 Degassing device for mold in molding machine

Country Status (1)

Country Link
JP (1) JPS57212040A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60127112A (en) * 1983-12-14 1985-07-06 Matsushita Electric Works Ltd Air venting device of molding die

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH037425U (en) * 1989-06-01 1991-01-24

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60127112A (en) * 1983-12-14 1985-07-06 Matsushita Electric Works Ltd Air venting device of molding die
JPH0447606B2 (en) * 1983-12-14 1992-08-04 Matsushita Electric Works Ltd

Also Published As

Publication number Publication date
JPS6116224B2 (en) 1986-04-28

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