Edge Band Pressure Roller Linkage for Compact Smooth Pressing
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Solution Overview
Problem
Pressing devices for coating materials on wood or wood substitutes face challenges in optimizing installation space utilization while maintaining smooth sensing behavior, as traditional rocker arms require significant space and are not suitable for linear guides.
Innovation Solution
A multi-link mechanism comprising a lever and push section, forming a linkage, allows the pressure roller to pivot around a virtual axis, optimizing its movement path without increasing installation space, using a four-bar linkage for additional rollers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a rocker arm is used to position the pressure roller, then smooth sensing behavior is achieved, but installation space is significantly increased
Solution Approach 1:
The mechanism is segmented into a multi-joint linkage system consisting of a lever, push section, and bearing section. This segmentation allows the pressure roller's movement to be decoupled from the bearing section, enabling compact arrangement while maintaining smooth sensing behavior through the lever's pivoting action.
Solution Approach 2:
The invention transitions from a single-dimensional linear guide to a multi-dimensional multi-joint linkage mechanism. The push section is coupled to the bearing section via at least one lever such that the lever, the push section, and the bearing section form a multi-joint linkage, allowing movement in multiple directions and planes, thereby reducing the footprint while maintaining functionality.
2Area of stationary object
If a linear guide is used for the pressure roller, then installation space is reduced, but sensing behavior becomes less smooth due to higher breakaway forces and inertia
Solution Approach 1:
The invention introduces curved or circular movement paths through the lever mechanism, replacing the linear guide's straight path. The lever's pivoting action creates a circular arc trajectory for the pressure roller, which eliminates the stick-slip phenomenon and reduces breakaway forces, thereby achieving smooth sensing behavior in a compact space.
Solution Approach 2:
The system transitions from a static linear guide to a dynamic multi-joint linkage mechanism. The lever and push section form a movable linkage that adapts its configuration during operation, allowing the pressure roller to follow a smooth curved path while maintaining compact installation dimensions.
3Area of stationary object
If the virtual pivot axis is positioned optimally, then installation space is minimized, but the mechanism complexity increases
Solution Approach 1:
The invention merges the functions of positioning and guiding into a single multi-joint linkage mechanism. The lever simultaneously serves as both the positioning element and the guide for the pressure roller's movement, eliminating the need for separate guides and reducing overall mechanism complexity despite the optimized virtual pivot axis position.
Solution Approach 2:
The multi-joint linkage mechanism performs multiple functions: it positions the pressure roller, guides its movement along a smooth path, and enables compact installation through the optimized virtual pivot axis. This multi-functionality reduces the need for additional components, thereby minimizing installation space without proportionally increasing complexity.
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
The multi-link mechanism reduces installation space requirements while preserving smooth sensing behavior, enabling efficient adjustment of pressure without the need for additional guides.
Implementation Method 1
The first pressure roller (20) is coupled to the bearing section (2) via a lever (40b). The first pressure roller (20) is mounted on a push section (40c), which is preferably a push rod. The push section (40c) is coupled to the bearing section (2) via the at least one lever (40b) such that the lever (40b), the push section (40c), and the bearing section (2) form a multi-joint, in particular a three-joint, linkage.
Implementation Method 2
The lever, the thrust section, and the base section form a four-bar linkage. This embodiment has the particular advantage that the angular position of the thrust section does not change during the probing or positioning process.
Data Source
Figure 1
Figure 2~3A
Figure 3B
AI summary
The pressing device (1) for pressing edge banding onto the narrow sides of plate-shaped workpieces (3) made of wood or wood substitutes comprises a bearing section (2) and at least one rotatably mounted first pressure roller (20). The first pressure roller (20) is coupled to the bearing section (2) via a lever (40a, 40b), wherein the first pressure roller (20) can be disengaged relative to the bearing section (2), in particular by means of an associated actuator, by pivoting the lever (40a, 40b). The first pressure roller (20) is mounted on a push section (40c), in particular a push rod. The push section (40c) is coupled to the bearing section (2) via the at least one lever (40a) such that the lever (40a, 40b), the push section (40c), and the bearing section (2) form a multi-joint, in particular a three-joint, linkage.