JPS5544321A - Nozzle - Google Patents

Nozzle

Info

Publication number
JPS5544321A
JPS5544321A JP11699578A JP11699578A JPS5544321A JP S5544321 A JPS5544321 A JP S5544321A JP 11699578 A JP11699578 A JP 11699578A JP 11699578 A JP11699578 A JP 11699578A JP S5544321 A JPS5544321 A JP S5544321A
Authority
JP
Japan
Prior art keywords
piston
nozzle
glass fiber
hydraulic pressure
needle valve
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
JP11699578A
Other languages
Japanese (ja)
Other versions
JPS5720891B2 (en
Inventor
Mitsuhiro Kanao
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP11699578A priority Critical patent/JPS5544321A/en
Publication of JPS5544321A publication Critical patent/JPS5544321A/en
Publication of JPS5720891B2 publication Critical patent/JPS5720891B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Nozzles (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To prevent the entry of resins to piston and cylinder clearances and improve nozzle durability by providing an auxilary piston to a nozzle for molding of plastics and letting the resin containing glass fiber stagnate there.
CONSTITUTION: An auxiliary piston 2 is disposed in an auxiliary cylinder 3 in association to a needle valve 1. The lubricating oil 10 in a tank 8 becomes hydraulic pressure by way of compressed air 11 and when it reaches the respective clearance parts through the oil hole 12 of a main piston 4, the balance of the resin pressure around the needle valve 1 and the hydraulic pressure is maintained, then the glass fiber containing resin in the clearance between the auxiliary piston 2 and auxliary cylinder 3 assumes a stagnating state even if the piston 4 is reciprocating, thus it does not affect the periphery of the main piston 4. Namely, if the hydraulic pressure is suitably set, the entry of the glass fiber containing resin into the periphery of the main piston with the peripheral part of the mushroom valve 13 as a boundary is obviated and the needle valve nozzle of less abrasion is provided.
COPYRIGHT: (C)1980,JPO&Japio
JP11699578A 1978-09-22 1978-09-22 Nozzle Granted JPS5544321A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11699578A JPS5544321A (en) 1978-09-22 1978-09-22 Nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11699578A JPS5544321A (en) 1978-09-22 1978-09-22 Nozzle

Publications (2)

Publication Number Publication Date
JPS5544321A true JPS5544321A (en) 1980-03-28
JPS5720891B2 JPS5720891B2 (en) 1982-05-01

Family

ID=14700859

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11699578A Granted JPS5544321A (en) 1978-09-22 1978-09-22 Nozzle

Country Status (1)

Country Link
JP (1) JPS5544321A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0487408U (en) * 1990-12-11 1992-07-29

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0487408U (en) * 1990-12-11 1992-07-29

Also Published As

Publication number Publication date
JPS5720891B2 (en) 1982-05-01

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