KR920007784A - Apparatus and method for controlling shaping and curing pressure in tire molds - Google Patents

Abstract

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Description

Apparatus and method for controlling shaping and curing pressure in tire molds

As this is a public information case, the full text was not included.

1 is a partial cross-sectional schematic diagram of a tire press mold comprising one embodiment of the present invention,

FIG. 2 is a graph showing the vapor pressure in a tire in the mold of FIG. 1 over time.

Claims (11)

CLAIMS 1. An apparatus for controlling shaping and curing pressure in a tire mold, comprising: a steam pressure source for providing steam to the inlet of the mold compressed steam at a vapor pressure equal to or greater than the maximum vapor pressure required during shaping or curing of the tire raw material; A flow of fluid between the steam pressure source and the mold for a predetermined time period or more, so as to operate between the steam pressure source and the mold, and to increase the vapor pressure in the mold in accordance with a predetermined working relationship over time. An apparatus for controlling shaping and curing pressure in a tire mold, characterized by comprising a single electrically controlled intake valve comprising means for responding to an electrical valve control signal for control. An apparatus for controlling shaping and curing pressure in a tire mold according to claim 1, characterized in that the single electric control valve is a v seat control valve. The apparatus for controlling shaping and curing pressure in a tire mold according to claim 1, wherein the vapor pressure source is 300 psi. 2. The tire mold of claim 1 further comprising an electronic control unit coupled to the electric control valve for providing the electric valve control signal in response to a predetermined action relationship of vapor pressure over time. Apparatus for controlling shaping and curing pressure. 5. The injector sensor of claim 4, further comprising a pneumatic sensor providing closed loop control of the mold pressure by being connected to the inlet of the mold to measure the vapor pressure in the mold and provide an electrical feedback signal to the electronic control unit. Apparatus for controlling shaping and curing pressure in a tire mold, characterized in that. The inlet and outlet valves of claim 1, wherein a single electrically controlled outlet valve is connected to operate between the mold and the atmosphere, and the inlet and outlet valves are configured to reduce the vapor pressure in the mold according to a predetermined action step over time after curing is completed. And means for controlling the molds, wherein the shaping and curing pressure in the tire mold is controlled. An apparatus for shaping and curing a tire, comprising: associated platens having separable upper and lower mold halves; The upper and lower mold halves; A bladder of elastomer that is deployed to operate in the mold halves, the tire raw material being arranged to operate around to receive steam; A vapor pressure source for providing the inlet of the elastomer with steam compressed to a vapor pressure equal to or greater than the maximum vapor pressure required during shaping or curing of the tire raw material; A operative connection between the source of compressed steam and the bladder and controlling the amount of fluid flow between the steam pressure source and the bladder over a predetermined time period to increase the vapor pressure in the tire according to a predetermined action relationship. An electrically controlled intake valve comprising means for responding to an electrical valve control signal for An electronic control unit connected to said electrically controlled intake valve for providing said electric valve control signal in response to a predetermined action relationship of vapor pressure over time; Shape and cure the tire, characterized in that it comprises a pressure sensor connected to the inlet of the bladder to measure the vapor pressure in the tire to provide an electrical feedback signal to the electronic control unit, providing a closed loop of tire pressure. Device for 8. Apparatus according to claim 7, wherein said electric control valve is a v seat control valve. 8. The apparatus of claim 7, wherein the vapor pressure source is 300 psi. 8. The device of claim 7, further comprising an electrically controlled discharge valve connected to operate between the bladder and the atmosphere and to be controlled by the electronic control unit, wherein the electronic control unit has a predetermined action after curing is completed. Controlling the inlet and outlet valves to reduce the vapor pressure in the tire in accordance with the relationship. Providing compressed steam to the inlet of the mold from a source of steam pressure equal to or greater than the maximum vapor pressure required during shaping or curing; Providing an electrically controlled intake valve operatively coupled between the vapor pressure source and the mold to respond to an electric valve control signal; Controlling the amount of fluid flow between the steam pressure source and the mold with the intake valve for a predetermined period of time to increase the vapor pressure in the mold in accordance with a predetermined action phase over time. Method of controlling shaping and curing pressure in the mold. ※ Note: This is to be disclosed by the original application.