Extrusion press

Abstract

Provided is a short stroke type extrusion press which is capable of increasing a container strip force, improving energy efficiency, and saving space by reducing apparatus length. A main cylinder housing (4) of the extrusion press comprises a transfer medium (10) which advances or retreats an extrusion stem (13) in an extrusion axis direction, and a transfer medium (16) which advances or retreats a container (14) in the extrusion axis direction. A container pushing medium (21) is disposed at an end platen (1) disposed opposite the main cylinder housing (4) and makes it possible for at least four different transfer motions to be carried out independently or in collaboration with the container transfer medium in the direction in which the container (14) separates from a die (9).

Description

technical field [0001] Cross-references related to related applications [0002] The present invention proposes a patent claim based on the priority of patent application 2011-173675 filed on August 9, 2011, and these contents are incorporated as references in this specification, and continue in this application. [0003] The present invention relates to an extruder used for metal extrusion molding such as aluminum alloys, particularly to an extruder of a short-stroke type with shortened machine length and space saving, and to an extruder that achieves multifunctionality and shortens idle time . Background technique [0004] Generally, in the case of extruding extruded materials (billets) made of metal materials such as aluminum or its alloy materials by an extruder, an extruding rod is installed at the front end of the main piston driven by a hydraulic cylinder. In the state where the extrusion cylinder is pressed against the die, the extrusion material (billet) is stored...

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Problems solved by technology

[0010] However, in the above-mentioned conventional extrusion machine, since the extrusion cylinder 16 is made into a structure installed on the main cylinder shell 4 in this way, there is no interference with other parts and other mechanisms in the extrusion machine. Considering the relationship between the existence and non-existence of the extrusion cylinder, increasing the peeling force of the extrusion cylinder will bring about difficulties in the design strength and structure.

[0011] In addition, since the above-mentioned operation is performed by the above-mentioned extrusion cylinder 16, there is a problem that a large amount of pressure oil is supplied, useless energy is consumed, and energy efficiency is poor.

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