Valve needle and hot runner system

The invention discloses a valve needle and a hot runner system.The valve needle comprises a valve needle hanging table, a valve rod and a valve needle head, the valve rod comprises a first section, a second section and a third section, and one end of the first section is connected with a valve rod t...

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1. Verfasser: ZHANG XIAFENG
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creator ZHANG XIAFENG
description The invention discloses a valve needle and a hot runner system.The valve needle comprises a valve needle hanging table, a valve rod and a valve needle head, the valve rod comprises a first section, a second section and a third section, and one end of the first section is connected with a valve rod tail; one end of the second section is connected with the other end of the first section; one end of the third section is connected with the other end of the second section, and the other end of the third section is connected with the valve needle head; and the first section, the second section and the third section are coaxially connected in sequence. According to the valve needle and the hot runner system, molten plastic cannot remain in the back shadow area of the valve needle for a long time, so that the quality problems that the residual plastic stays in the back shadow area of the valve needle for a long time, is affected by high temperature and high pressure and is decomposed and carbonized by heating, and a
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language chi ; eng
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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 Valve needle and hot runner system
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