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Piston-cylinder unit used for forming machine and forming machine

A cylinder unit, molding machine technology, applied in mechanical equipment, fluid pressure converter, fluid pressure actuating device, etc., to achieve the effect of simple structure design

Pending Publication Date: 2018-08-03
ENGEL AUSTRIA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, said accumulators always require the use of relatively complex hydraulic and valve arrangements to utilize the functions of the accumulator

Method used

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  • Piston-cylinder unit used for forming machine and forming machine
  • Piston-cylinder unit used for forming machine and forming machine
  • Piston-cylinder unit used for forming machine and forming machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] Figure 1a A piston-cylinder unit 1 according to the invention is shown with a first chamber 2 , a piston 5 and a second chamber 6 . The first chamber 2 on the shank side is used, for example, to act with clamping force in a clamping unit 15 of an injection molding machine. The first chamber 2 is connected to the pump 3 for this purpose. The second chamber 6 is then connected to the pressure accumulator 7 .

[0041] in press Figure 1a In the preferred embodiment, the discharge line 12 is at the same time the input line 14 to the first chamber 2 . A non-return valve 11 is also arranged in the discharge line 12 , and the second chamber 6 is also connected to the pump 3 in addition to the pressure accumulator 7 , ie via the connecting line 9 . A connection from the second chamber 6 to a tank (not referenced) for hydraulic fluid is also established via this connecting line 9 . Two check valves 11 are also located in the connecting line 9, one of which is used for the co...

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Abstract

The invention relates to a piston-cylinder unit used for a forming machine. The unit comprises a first cavity (2) and a hydraulic pump (3). The hydraulic pump is used for being connected with the first cavity (2) for loading hydraulic fluids under pressure. The unit also comprises a reset device (4) used for resetting a piston (5) of a piston-cylinder unit (1) along the direction basically opposite to the acting direction of the first cavity (2). The reset device (4) is equipped with a second cavity (6) of the piston-cylinder unit (1) and a pressure accumulator (7). The pressure accumulator (7) is connected with the second cavity (6) and / or the pressure accumulator and the second cavity are integrally constructed. The reset device (4) is configured for resetting the piston (5) to a basicposition for reset. The pressure accumulator is completely depressurized at the basic position.

Description

technical field [0001] The invention relates to a piston-cylinder unit for a molding machine according to the features of the preamble of claim 1 . Background technique [0002] Molding machines are understood here to mean injection molding machines, die-casting machines, press-forming machines and similar machines. [0003] Such a piston-cylinder unit comprises a first chamber, a hydraulic pump connected to the first chamber in order to act upon the first chamber with hydraulic fluid under pressure, and for orienting the piston of the piston-cylinder unit in a direction of action with said first chamber A reset device that resets in substantially the opposite direction. A reset device for the piston-cylinder unit can be used in the molding machine when only the action of the piston-cylinder unit in the direction of action of the first chamber is important for the molding cycle itself. The piston-cylinder unit must then be brought back into the starting position, for which...

Claims

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Application Information

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IPC IPC(8): F15B15/14F15B3/00F15B1/08
CPCB29C45/4005B29C45/6728F15B21/14F15B1/08F15B3/00F15B15/1423B29C45/67B29C45/82B29C2045/824F15B2211/7716F15B2211/7053F15B2211/625F15B2211/212F15B2211/205F15B15/1476
Inventor A·洛纳克尔
Owner ENGEL AUSTRIA
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