Safety control double-valve for power-off protection type press machine

A technology of safety control and power-off protection, applied in the direction of presses, fluid pressure actuation system safety, fluid pressure actuation devices, etc., can solve problems such as functional defects, safety valves losing safety functions, etc., and achieve the effect of not being easily blocked

Active Publication Date: 2010-03-03
WUXI TUOFA AUTOMATIC CONTROL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the press loses power, the safety valve exhaust port in the "safety control double valve for press" is closed, and the pressure of the clutch controlled by the "safety control double valve for press" cannot be discharged from the safety valve exhaust port , at this time the safety valve loses its safety function and a functional defect occurs

Method used

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  • Safety control double-valve for power-off protection type press machine
  • Safety control double-valve for power-off protection type press machine
  • Safety control double-valve for power-off protection type press machine

Examples

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Embodiment Construction

[0051] The safety control double valve includes a double valve and a safety valve, and the double valve includes a parallel double valve and a cross-flow double valve, and the parallel safety control double valve is composed of the parallel double valve and the safety valve. The cross-flow double valve and the safety valve constitute a cross-flow safety control double valve.

[0052] The design principle is: use Figure 1aThe first coil 1DT and the second coil 2DT in the coil 1 of the two pilot solenoid valves in the parallel double valve 56 in b, c, d or the cross-flow double valve 96 are energized at the same time to safely control the double valve If the air path from the lower valve port 62 to the compressed air output port OUT is high pressure, the gas-electric signal converter 57 provided on the air path from the lower valve port 62 to the compressed air output port OUT sends a high pressure signal. If the first coil 1DT and the second coil 2DT of the double valve are d...

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Abstract

The invention relates to a control valve, in particular to a safety control double-valve for a power-off protection type press machine. According to the technical scheme provided by the invention, thesafety control double-valve for the power-off protection type press machine comprises a parallel double-valve or a cross-flow double-valve and a safety valve, and at least one pneumatic-electric signal converter is arranged on an air passage runner from a lower valve port of the safety valve to a compressed air output port. The safety control double-valve is characterized in that the output portof the parallel double-valve or the cross-flow double-valve is connected with an input port positioned at one end of the safety valve; the other end of the safety valve is connected with an exhaust valve port, and the exhaust valve port is connected with an exhaust port of the safety valve; and at least one pneumatic-electric signal converter is arranged on the air passage runner from the lower valve port to the compressed air output port. The safety control double-valve can improve the safety and the reliability of the valve.

Description

technical field [0001] The invention relates to a control valve, in particular to a safety control double valve for a power-off protection press machine. Background technique [0002] At present, double valves are used both at home and abroad to control the friction clutch action of pneumatic friction clutch presses. This type of double valve directly connects the air inlet, air outlet and exhaust port of two sets of single solenoid valves in parallel or cross. In this paper, the double valve formed by directly connecting the inlet, outlet and exhaust ports of two sets of single solenoid valves in parallel is referred to as a parallel double valve. The double valve formed by the cross-mirror parallel connection of the air inlet, the air outlet and the exhaust port is referred to as a cross-flow double valve, the same below. When the coils of the two sets of single solenoid valves are energized at the same time, the two sets of single solenoid valves change direction at the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B30B15/28F15B13/044
CPCF15B20/001B30B15/28
Inventor 荣昉张整风芦敏李厚伦庄敏贺和群
Owner WUXI TUOFA AUTOMATIC CONTROL EQUIP
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