Perpendicular Wiper Strip Separation Unit Reduces Blade Wear
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Solution Overview
Problem
Existing methods for separating double-extruded wiper strips are not precise enough and result in significant wear of the wiper strip separating unit, leading to inefficiencies and increased maintenance costs.
Innovation Solution
The wiper strip separating unit is moved perpendicular to the transport direction and equipped with oscillating cutting blades or a cutting wire, and in some cases, a laser beam guided through a liquid jet, to achieve precise and low-wear separation of wiper strips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a stationary knife is used to cut wiper strips in the transport direction, then the cutting process is simple, but the precision of separation deteriorates and wear on the cutting tool increases
Solution Approach 1:
The patent applies the dynamics principle by making the wiper strip separating unit movable rather than stationary. The unit is moved perpendicular to the transport direction during the cutting process, which improves separation precision by ensuring proper alignment between the cutting edge and the wiper strip, while also reducing wear on the cutting tool through optimized contact dynamics
Solution Approach 2:
The patent introduces motion in a new dimension (perpendicular to the transport direction) to resolve the contradiction. By moving the separating unit in this additional dimension, the cutting precision is improved without complicating the basic cutting mechanism, as the motion is orthogonal to the existing transport direction
2Device complexity
If a stationary knife is used to cut wiper strips, then the device structure is simple, but wear on the separating unit increases significantly
Solution Approach 1:
The movable design of the separating unit reduces wear by optimizing the cutting dynamics. The perpendicular motion ensures that the cutting edge engages the wiper strip in a controlled manner, distributing wear more evenly and reducing the overall wear rate, thereby improving reliability without adding excessive structural complexity
3Manufacturing precision
If the separating unit is moved perpendicular to transport direction, then precision of separation improves, but device complexity increases
Solution Approach 1:
The patent implements a movable separating unit that travels perpendicular to the transport direction. This dynamic approach improves separation precision by ensuring accurate positioning during cutting, while the mechanism is designed to be as simple as possible, using basic guide rails and drive mechanisms that do not significantly increase overall device 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
This approach enhances the precision and durability of the separation process, reduces wear on the cutting tools, and lowers production costs by minimizing miscuts and extending maintenance intervals.
Implementation Method 1
at least one first separating blade (20b, 20c, 20d) is set into a harmonic oscillation
Implementation Method 2
a laser beam (28e), which runs in a liquid jet (30e), is intended to separate the wiper strips (10e, 12e)
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention proceeds from a method for separating wiper strips (10a - 10e, 12a - 12e), in particular dual extruded wiper strips (10a - 10e, 12a - 12e), comprising a wiper strip separation unit (14a - 14e), the wiper strips (10a - 10e, 12a - 12e) being moved in a direction of conveyance for separation. According to the invention, the wiper strip separation unit (14a - 14e) is at least partly moved in a direction (16a - 16e) that is at least substantially perpendicular to the direction of conveyance.