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Method and drive system for the control/regulation of linear pressure/cast movement

a technology of linear pressing/casting movement and drive system, which is applied in the direction of positive displacement liquid engine, mechanical apparatus, pumps, etc., can solve the problems of relative advantageous structural complexity, and achieve the effects of small increase complexity, high loss, and increased pressing/casting movement speed

Inactive Publication Date: 2004-02-19
PROCONTROL AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The invention is about a new design for the drive of a pressing or casting axle that allows for better control of the movement of the piston. The design uses a pump and a throttle valve to control the flow of oil, which can be controlled by a motor. This new design has several advantages over existing designs, including faster piston movement, increased speed of pressing or casting, and reduced energy loss. The invention also allows for the use of a small amount of hydraulic fluid, reducing the risk of fire and the need for large hydraulic systems. Overall, the invention provides a simple and effective solution for controlling the movement of the piston in pressing or casting machines."

Problems solved by technology

This yields a relatively advantageous structural complexity.

Method used

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  • Method and drive system for the control/regulation of linear pressure/cast movement
  • Method and drive system for the control/regulation of linear pressure/cast movement
  • Method and drive system for the control/regulation of linear pressure/cast movement

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Embodiment Construction

[0027] It can be seen in FIGS. 7 and 8 that the structural embodiment of the casting equipment is unchanged in comparison with the known designs. However, the elements for control of the oil flow on the piston rod side are designed according to a completely novel concept. A liquid medium, i.e., a hydraulic oil, is proposed as the medium on the piston rod side, circulating through a connecting line 108 / 111 between chamber 109 on the piston rod side of the casting driving cylinder 16 and a preferably closed tank 110. The oil flow passes through line 108 and is conveyed directly through a pump 30 and line 113. As indicated by the two arrows 114 and 15, the oil flow may go in one direction or the other as needed. Pump 30 is driven by a servo motor 105 and has the properties described in European Patent 782 671 and WO97 / 05387, for example. servo motors are characterized in particular by an electronic power unit 116 by which all the important parameters can be controlled virtually simulta...

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Abstract

The invention relates to a method for controlled driving of the cast axle (8) of pressure die casting machines, comprising a drive piston (15), wherein the forward and return motion of the piston (15) is carried out in a controlled manner. The invention is characterized in that the oil flow or oil pressure on the piston rod side is controlled / regulated by a pump (30) and additionally by a throttle valve (103) working in parallel at least during the filling phase, especially during the fast forward motion part.

Description

TECHNICAL SCOPE[0001] This invention relates to a method and a drive system for controlling / regulating the linear pressing / casting movement by means of a driving piston in injection molding machines and die-casting machines or presses, whereby a hydraulic medium is used at least on the drive side and / or the piston rod side.STATE OF THE ART[0002] In addition to the mold cavity, the compression axle or die-casting axle is essentially the heart of the die-casting machine or press. This is also true of cold or hot chamber magnesium die-casting machines. High injection forces and practical working casting rates of more than 3 m / sec to 5 m / sec are required. In the area of injection molding machines for use with plastics, machines that operate only with an electric drive have already become well established to a great extent, in addition to traditional machines driven by oil hydraulic systems. In cold and hot chamber magnesium die-casting machines, all the axles except the casting axle can...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B22D17/32B29C45/82F15B1/02F15B11/044F15B15/14
CPCB22D17/32B30B15/163B29C2045/824B29C2945/76013B29C2945/76083B29C2945/76113B29C2945/762B29C2945/76381B29C2945/76498B29C2945/76598B29C2945/76678B29C2945/76785B29C2945/76859B29C2945/76862F15B1/02F15B11/044F15B15/1476F15B2211/20538F15B2211/212F15B2211/30525F15B2211/3144F15B2211/40515F15B2211/455F15B2211/50536F15B2211/5151F15B2211/6313F15B2211/7052F15B2211/76B29C45/82
Inventor STILLHARD, BRUNOSIEGRIST, RONALD
Owner PROCONTROL AG
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