Extrusion Press Pressure Column Adjustment for Beam Alignment
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Solution Overview
Problem
Existing extrusion presses face challenges in maintaining precise horizontal and vertical alignment due to play in pressure columns caused by high pressing forces, leading to dimensional tolerance issues in produced press strands.
Innovation Solution
Incorporating adjustable pressure pieces with clamping disks that can be twisted to compensate for play between the cylinder beam and counter beam, ensuring precise alignment without additional installation space, utilizing self-locking ramp surfaces for reliable adjustment and prevention of displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If high pressing forces are applied during extrusion, then the extrusion process can be performed, but play occurs in the pressure columns causing misalignment
Solution Approach 1:
The pressure pieces are pre-adjusted to compensate for play in the pressure columns before the extrusion process begins. This preliminary adjustment ensures that when high pressing forces are applied, the cylinder beam and counter beam remain properly aligned without developing misalignment during operation.
Solution Approach 2:
The length of the pressure pieces is variable and can be adjusted to change the pre-tension in the tie rods. By modifying this parameter, the system compensates for play in the pressure columns and maintains proper alignment under high pressing forces.
2Duration of action of moving object
If the extruder is started up for the first time, then the tie rods are subjected to stretching force, but this leads to changes in tie rod length and play in pressure columns
Solution Approach 1:
The pressure pieces are adjusted in advance to account for the expected stretching of tie rods during the startup phase. This preliminary action compensates for the length changes that occur when the extruder is first put into operation, preventing play in the pressure columns and maintaining alignment precision.
3Device complexity
If existing play between pressure columns and beams is used, then the structure is simple, but dimensional tolerances of press strands cannot be ensured
Solution Approach 1:
The pressure transmission system is segmented into adjustable pressure pieces that can be independently modified. This segmentation allows for precise adjustment of each pressure piece to compensate for play, thereby ensuring dimensional tolerances while maintaining relative structural simplicity.
Solution Approach 2:
The pressure pieces are made dynamically adjustable rather than fixed. This allows the system to adapt to changes in tie rod length and pressure column play, ensuring dimensional tolerances are maintained without requiring a completely complex rigid structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables continuous and precise adjustment of pressure pieces to maintain alignment under high forces, ensuring accurate dimensional tolerances and reliable operation of the extrusion press.
Implementation Method 1
The end faces of the clamping disks facing one another have corresponding run-up surfaces, which preferably have a self-locking gradient
Implementation Method 2
the clamping disks have coaxial guide webs which engage in corresponding guide grooves in the pressure columns on the one hand and in the cylinder beam or the counter beam on the other
Data Source
Figure 1
Figure 2~4
AI summary
The invention relates to an extrusion press (10) comprising a cylinder beam (12), a counter beam (14), and at least one tie rod (16) connecting these to form a press frame (18), and a pressure column (28) surrounding the tie rod, which is arranged between the cylinder beam (12) and the counter beam (14). The pressure column (28) is provided to include at least one pressure piece (30) whose length is adjustable in the longitudinal direction of the pressure column (28).