Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for reducing pressure fluctuation in hydraulic system of extrusion press

A technology of hydraulic system and extruder, applied in the direction of fluid pressure actuating device, fluid pressure actuating system components, mechanical equipment, etc. Stability and reliability, the effect of improving service life and stability

Active Publication Date: 2019-01-18
CHINA NAT HEAVY MACHINERY RES INSTCO
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problem of unstable extrusion speed control and large fluctuations in the existing methods, the present invention provides a method for reducing pressure fluctuations in the hydraulic system of an extruder to reduce the impact of the hydraulic system on hydraulic components and improve the service life and Stability, while improving the stability of the hydraulic system oil pressure output, thereby improving the stability and reliability of the extrusion force and extrusion speed control of the extrusion machine

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for reducing pressure fluctuation in hydraulic system of extrusion press
  • Method for reducing pressure fluctuation in hydraulic system of extrusion press

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In order to overcome the problems of unstable extrusion speed control and low service life of hydraulic components in the existing method, the present invention provides a method such as figure 1 The pressure fluctuation reduction method of the hydraulic system of the extruder is shown to reduce the impact of the hydraulic system on the hydraulic components, improve the service life and stability of the hydraulic components, and at the same time improve the stability of the oil pressure output of the hydraulic system, thereby improving the extrusion pressure of the extruder. Stability and reliability of pressure and extrusion speed control.

[0020] The pressure fluctuation reduction method of the hydraulic system of the extrusion machine, the pressure oil output of the hydraulic system, first enters the pulsation damper 4 from the hydraulic pump assembly 6, and the noise transmitted by the hydraulic pump assembly 6 is filtered through the pulsation damper 4, and the out...

Embodiment 2

[0023] On the basis of Embodiment 1, in this embodiment, the hydraulic pump assembly 6 is rigidly connected to the pulsation damper 4, and the pulsation damper 4 is installed at the outlet of the hydraulic pump assembly 6. At the same time, the pulsation damper 4 is connected to the whole body 2 Flexible connection, the whole body 2 is connected with the hydraulic cylinder control valve block 1.

[0024] The hydraulic pump assembly 6 is rigidly connected to the pulsation damper 4 through a hydraulic steel pipe 5 .

[0025] The model of the pulsation damper 4 is PULSDAEMPFER. In this embodiment, the pulsation damper 4 provided by German Rexroth Company is used, and the hydraulic pump assembly 6 outputs oil through the pulsation damper 4 to reduce pressure fluctuations.

[0026] The pulsation damper 4 is flexibly connected with the whole body 2 through a rubber hose 3 .

[0027] The hydraulic pump assembly 6 at least includes an oil pump and a motor, and the motor is connected...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for reducing pressure fluctuation of a hydraulic system of an extruding machine. Pressure oil of the hydraulic system is output and enters a pulsation damper through a hydraulic pump assembly firstly, noise transmitted by the hydraulic pump assembly is filtered out through the pulsation damper, and meanwhile filtration and compression are conducted on a crest and a trough of the output pressure oil; and the fluctuation pressure oil output by the hydraulic pump assembly is converted into flat peak pressure oil, the flat peak pressure oil is conveyed to a full body through the pulsation damper, the flat peak pressure oil flows to a hydraulic cylinder control valve block from the full body, and the hydraulic cylinder control valve block conducts controlling to finish extrusion related actions. The pulsation damper, flexible connection and the like are added in the hydraulic system, the fluctuation pressure oil output by the hydraulic pump assembly is converted into the flat peak pressure oil, pressure fluctuation caused by rotation of an oil pump is overcome basically, the oil source output stability is guaranteed, and accordingly the impact on a hydraulic element is reduced; and the service life of the hydraulic element is prolonged, the stability of the hydraulic element is improved, and the extrusion force of the extruding machine and the extrusion speed control stability and reliability are improved.

Description

technical field [0001] The invention belongs to the field of metallurgical equipment, in particular to a method for reducing pressure fluctuations in a hydraulic system of an extruder. Background technique [0002] In the existing aluminum extrusion production process, due to the characteristics of the oil pump rotation, the hydraulic system of the extrusion machine has the problem of pressure fluctuations. The pressure fluctuations will not only cause noise and vibration and resonance of mechanical parts, but also affect the hydraulic pressure. Valves, filters, sealing rings and other hydraulic components form a continuous impact, which affects the service life and sealing life and effect of the above hydraulic components. In the aluminum extrusion machine, pressure fluctuations will also cause extrusion force and extrusion speed. Fluctuation and instability affect the surface quality and yield of profiles, especially the extrusion of profiles that require high speed contro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F15B21/00F16L55/05
CPCF15B21/008F16L55/05
Inventor 谢东钢张君黄胜杨红娟
Owner CHINA NAT HEAVY MACHINERY RES INSTCO