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pressure control device

A pressure control and pressure technology, applied in the field of pressure control devices, can solve the problems of power consumption, increasing the pressure resistance of the circulation circuit and the mold, and shortening the life of the pressurizing pump.

Active Publication Date: 2022-03-29
MATSUI MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there will be problems such as excessive power consumption, shortening the life of the booster pump, and the need to increase the pressure resistance of the circulation path and the mold, etc.

Method used

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Embodiment Construction

[0030] Hereinafter, the present invention will be described based on drawings showing the present embodiment. figure 1 It is an explanatory diagram showing the structure of the mold temperature regulator 100 as the pressure control device according to the present embodiment. In the present embodiment, the mold temperature regulator 100 has been described as an example of the pressure control device, but the pressure control device is not limited to the mold temperature regulator. The mold temperature regulator 100 adjusts (controls) the temperature and pressure of a medium for cooling that is supplied to the mold 200 that is an object.

[0031] Such as figure 1 As shown, the mold temperature regulator 100 is formed into the following structure: a pipeline 11 (medium delivery pipeline) is connected between the discharge side (OUT) of the pump 31 and the inlet side of the mold 200, and the outlet side of the mold 200 is connected to the inlet side of the pump 31. A pipeline 12...

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Abstract

The invention provides a pressure control device. The pressure control device (100) controls the pressure of the medium circulating in the circulation path (11, 12, 16), and the circulation path (11, 12, 16) is arranged between the suction side and the discharge side of the pump (31) and the Between the objects specified by each. The pressure control device (100) includes: a temperature detection part (71), which detects the temperature of the medium in the circulation path (11); a pressure calculation part (52), which calculates the saturated vapor pressure of the medium in the circulation path (11); and a pressure control unit (50) which controls the pressure of the medium on the suction side of the pump to be higher than the saturated vapor pressure calculated by the pressure calculation unit (52). According to this pressure control device, the pressure of the medium circulating in the circulation path can be controlled to an optimum pressure.

Description

technical field [0001] The present invention relates to a pressure control device which controls the pressure of a medium circulating in a circulation path provided between the suction side and the discharge side of a pump and their respective prescribed objects. Background technique [0002] Molds are used in injection molding machines for injection-molded synthetic resin products such as plastics. A mold for injection molding has a cavity, which is a space portion filled with molten plastic, and a flow path, which flows with a medium for cooling and solidifying the molten plastic. It is very important to accurately maintain the temperature of the mold at the specified temperature to improve the accuracy of molded products. [0003] The mold temperature regulator that adjusts the mold temperature generally uses water as the medium, and is roughly divided into two types: the type that controls the mold temperature below 100°C, and the type that controls the mold temperature...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/82
CPCB29C45/82B29C2945/76498B29C2945/7604
Inventor 久田松润荒木康也
Owner MATSUI MFG