Multi-Chamber Baling Press Ram for Fast Stroke and High Force
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Solution Overview
Problem
Existing baling presses require considerable hydraulic forces and have limited length, necessitating multiple rams and hydraulic circuits, leading to time delays and inefficiencies in the compaction process due to the need for energy-intensive force generation and limited stroke distances.
Innovation Solution
A baling press design featuring a single hydraulic circuit with a T-shaped pressure piston and carriage system, allowing for rapid infeed movement and increased compressive force through multiple pressure chambers, which reduces energy expenditure and eliminates the need for multiple rams, enabling efficient compaction and bale formation without significant time delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If multiple press rams are used to generate sufficient compaction force, then the pressing force increases, but the device complexity and time delays increase due to multiple hydraulic circuits
Solution Approach 1:
The single press ram is segmented into multiple pressure chambers (first, second, and third pressure chambers) that can be independently controlled by the hydraulic circuit. This allows the system to generate high pressing force through multiple chambers while avoiding the complexity of multiple separate press rams and their associated hydraulic circuits.
Solution Approach 2:
The single hydraulic circuit is designed to serve multiple functions by controlling different pressure chambers for different operational phases: rapid infeed movement (using first pressure chamber), compaction (using second pressure chamber), and bale formation (using third pressure chamber). This multi-functional design eliminates the need for separate hydraulic circuits for each function.
2Force
If multiple pressure chambers are used in a single press ram, then the pressing force increases, but the energy consumption increases
Solution Approach 1:
The hydraulic circuit operates in periodic cycles, activating different pressure chambers at different stages of the compaction process. The first pressure chamber is activated for rapid infeed movement, then the second pressure chamber for compaction, and finally the third pressure chamber for bale formation. This periodic activation pattern reduces overall energy consumption compared to continuously operating all chambers at full power.
Solution Approach 2:
The first pressure chamber performs preliminary rapid infeed movement to position materials quickly before the second pressure chamber engages for actual compaction. This preliminary action separates the rapid positioning function from the high-force compaction function, allowing each pressure chamber to operate more efficiently in its designated phase.
3Productivity
If rapid infeed movement is prioritized, then the productivity increases, but the pressing force may be insufficient for proper compaction
Solution Approach 1:
The press ram is segmented into multiple pressure chambers that can be independently controlled. The first pressure chamber is optimized for rapid infeed movement to maximize productivity, while the second and third pressure chambers are optimized for high pressing force to ensure proper compaction. This segmentation allows the system to achieve both rapid movement and sufficient pressing force at different operational stages.
Solution Approach 2:
The hydraulic circuit dynamically adjusts which pressure chambers are active based on the operational phase. During the infeed phase, only the first pressure chamber is active for rapid movement. During compaction, the second pressure chamber is activated for high force. This dynamic switching allows the system to optimize for speed when needed and for force when needed, resolving the contradiction between productivity and pressing force.
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
This design achieves rapid infeed movement and high pressing force with reduced energy consumption, allowing for efficient compaction of objects into bales without the inefficiencies associated with multiple rams and hydraulic circuits, while maintaining flexibility in installation space usage.
Implementation Method 1
connected to a hydraulic circuit (11), by which rapid infeed movement and increased pressure can act on the objects (6) to be compacted and compress them into a bale (9)
Data Source
Figure 1
Figure 2
Figure 3a
AI summary
In a baling press (1) comprising a housing (2) and a pressing chamber (4) enclosed by the housing (2), into which cardboard, waste, soil or other objects (6) can be placed for compaction, with at least one press ram (8) axially movable within the housing (2), which plunges into the pressing chamber (4) and thereby compresses the objects (6) into a bale (9), and with a hydraulic circuit (11) by which the press ram (8) is driven towards the pressing chamber (4) and returned to its starting position, the baling press (1) of the aforementioned type and a control method for operating such a baling press (1) shall be provided, by which, firstly, a rapid approach movement of the press ram (8) and a sufficiently high pressing force are applied to the objects to be compacted by means of the press ram (8).without significant time delays arising from the delivery of the press ram (8) and the generation of the required contact pressure. This is achieved by the press ram (8) consisting of a tube (21) supported on the housing (2) by a support plate (25), in which a pressure piston (22) with a T-shaped cross-section is axially movable, a slide (23) associated with the open end of the pressure piston (22) and attached to the pressure piston (22), and a stationary cylinder (24) enclosing the pressure piston (22) and the slide (23), the tube (21) and the cylinder (24) being attached to the support plate (25) connected to the housing (2), the support plate (25) and the tube (21) forming or enclosing a first pressure chamber (R1), and the support plate (25) forming the outside of the tube (21).the first free surface (23') of the slide (23) and the inside of the cylinder (24) form or enclose a second pressure chamber (R2), that the outside of the pressure piston (22), the second free surface (23") of the slide (23) and the inside of the cylinder (24) form or enclose a third pressure chamber (R3), and that an opening (15, 16, 17) is incorporated into each of the three pressure chambers (R1, R2 and R3) which is connected to the hydraulic circuit (11).