JP2006062338A - Oil-filled thermoplastic elastomer material injection valve for English valves - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a valve capable of easily and stably injecting an elastomer gel without leaking when an oil-added thermoplastic elastomer material having a low viscosity at the time of melting is injected into a tire tube having an English valve. .
SOLUTION: By replacing the English valve and the plunger of the plunger with the same taper as the English valve and the plunger of the valve, the pipe of the valve-equipped nozzle is pressed against the taper of the English valve without leakage. It makes it possible to inject easily and stably.
[Selection] Figure 2

Description

  The present invention relates to a nozzle capable of injecting an oil-added thermoplastic elastomer material into a tire tube having an English valve.

  The English type valve (type VE) specified in JIS D9422 has two D cuts on the outer periphery of the body (type BE) and two cuts at the top of the D cut. When an oil-added thermoplastic elastomer material (hereinafter referred to as elastomer gel) is melted at a high temperature of 140 ° C or higher and injected, a flexible hose-like material is placed on an English valve and the outer diameter is clamped with a band. However, even if the shape of the hose was changed or the hardness was changed, it was not possible to solve the problem of leakage of the elastomer gel from the gap of the hose as defined in the English valve outer peripheral part JIS D9422.

  MEX2003-10 (patent application number)

  It is an object of the present invention to provide a valve which can be easily and stably injected without leaking an elastomer gel when an oil-added thermoplastic elastomer material having a low viscosity at the time of melting is injected into a tire tube having an English valve.

Means for solving the problem

  The present invention replaces a plunger (type PE) of an English valve (type VE) defined in JIS 9422, a pipe of a valve-equipped nozzle having the same taper as the tapered part of the English valve and plunger. By pressing against the tapered part of the English valve, it is possible to inject easily and stably without leakage.

  Since the pipe is structured to be attached to the valve body with a top nut like the plunger, it has a stopper ring smaller than the inner diameter of the top nut and a stopper having the same function as the stopper ring.

  The stopper ring may be brazed or welded to a pipe with a ring shape, or the outer periphery of the pipe may be processed with a lathe.

  As the top nut, a top nut (type TE) defined in JIS 9422 may be used.

  The pipe is connected to a valve body having a valve function for stopping the inflow of the elastomer gel, and the valve body is connected to the elastomer gel injection hose through a joint having a flexible nut.

  The pipe is made of a metal material such as stainless steel, copper or aluminum.

  The outer diameter of the pipe should be as large as possible within the range that can be inserted into the English valve body, and the inner diameter should be as large as possible within the range that the strength allows, to reduce the injection resistance of the air last gel.

  The taper of the English valve body and the taper at the tip of the pipe are in close contact with pressure by screwing the top nut to prevent leakage of the elastomer gel.

  The position relationship between the top nut and the stopper ring shall be such that the pipe taper part can be sufficiently crimped to the English valve body taper part.

  EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated more concretely, this invention is not restrict | limited at all to these Examples, unless the summary is exceeded.

  The molten elastomer gel (10) was poured into a 26 inch size English valve tire tube using the apparatus schematically shown in FIG.

  The pump used was a manual gear pump (6).

  Remove the plunger of the English valve, open the valve (11) of the valve devised this time, insert the pipe (14) into the English valve, and screw the top nut (15) into the taper part of the pipe (17) was pressure-bonded to the tapered portion of the English valve.

  When the injection of the molten elastomer gel (10) is complete, the injector valve (7) and valve body valve (11) are closed, and the valve body (12) and elastomer gel injection hose (9) are connected to the flexible nut of the joint. (8) was loosened and separated.

  After the melted elastomer gel solidified, the top nut (15) was loosened to separate the pipe (14) and the English valve, and the injection operation was completed.

  The injection result is shown in FIG.

  It was confirmed that the proposed valve can easily and stably inject elastomer gel without leaking.

  Schematic diagram of injection device   Schematic of valve   Injection result

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inner pan 2 Outer pan 3 Oil 4 Heater with temperature control function 5 Piping pipe with temperature control function 6 Pump with temperature control function 7 Injection machine valve 8 Joint with flexible nut 9 Elastomer gel injection hose with temperature control function 10 Elastomer gel 11 Valve 12 Valve body 13 Valve body mounting screw 14 Pipe 15 Top nut 16 Stopper ring 17 Pipe taper

Claims (1)

Nozzle capable of injecting oil-added thermoplastic elastomer material into tire tube with English valve

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