Edge Banding Thickness Compensation for Uniform Panel Edges
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Solution Overview
Problem
Existing edge banding machines produce panels with non-homogeneous edges due to variability in edge banding tape thickness, leading to aesthetic defects and waste, and existing solutions like milling or sensor-based thickness detection can damage tapes or fail due to measurement errors.
Innovation Solution
An edge banding machine with a sensor to detect actual tape thickness, a logic control unit to store nominal values, and a machining group to adjust edges before application, ensuring homogeneous edges and reducing waste by compensating for thickness differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If milling means are used to remove excess thickness of edge banding tape, then homogeneous panel edges can be achieved, but the edge banding tape may be damaged
Solution Approach 1:
The patent applies preliminary action by detecting the thickness of the edge banding tape before it is applied to the panel. The sensor measures the tape thickness upstream, and the control unit adjusts the positioning of the pressing unit in advance to compensate for thickness variations, preventing the need for post-application milling that could damage the tape
Solution Approach 2:
The patent implements feedback control by using a sensor to detect the actual thickness of the edge banding tape and feeding this information back to the control unit. The control unit then adjusts the pressing unit's positioning based on this feedback to compensate for thickness variations, ensuring homogeneous edges without damaging the tape
2Measurement precision
If sensor-based thickness detection is used, then measurement can be performed, but measurement errors may occur leading to rejected panels
Solution Approach 1:
The patent implements feedback control by using a sensor to detect the actual thickness of the edge banding tape and feeding this information back to the control unit. The control unit then adjusts the pressing unit's positioning based on this feedback to compensate for thickness variations, ensuring homogeneous edges without damaging the tape
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting the positioning parameters of the pressing unit based on the sensor measurements. The control unit modifies the pressing position in real-time to compensate for detected thickness variations, transforming measurement data into corrective action
3Productivity
If edge banding tape thickness variability is not compensated, then production speed is maintained, but panels with aesthetic defects are produced
Solution Approach 1:
The patent applies preliminary action by detecting the thickness of the edge banding tape before it is applied to the panel. The sensor measures the tape thickness upstream, and the control unit adjusts the positioning of the pressing unit in advance to compensate for thickness variations, preventing the need for post-application milling that could damage the tape
Solution Approach 2:
The patent implements feedback control by using a sensor to detect the actual thickness of the edge banding tape and feeding this information back to the control unit. The control unit then adjusts the pressing unit's positioning based on this feedback to compensate for thickness variations, ensuring homogeneous edges without damaging the tape
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 machine produces panels with uniform edges by detecting and adjusting for thickness variations, minimizing defects and waste, and providing real-time feedback on tape quality and sensor recalibration.
Implementation Method 1
at least one sensor, to detect the actual thickness value of the edge banding tape before its application by the pressing unit
Data Source
Figure 1
AI summary
The present invention relates to an edge banding machine (1) for the edge banding of at least one lateral surface or edge (B) of a workpiece (P), such as a panel made of wood, metal, glass, ceramic, fiberglass, plastic and the like with an edge banding tape, comprising a pressing unit (4), to press an edge banding tape on said edge (B) of said workpiece (P), at least one sensor (6), to detect the actual thickness value of said edge banding tape before its application by said pressing unit (4) and a logic control unit (8) connected to said at least one sensor (6) and comprising storing means to store one or more nominal thickness values of said edge banding tape, said edge banding machine (1) comprising at least one machining group (7), for machining said edge (B), placed before said pressing unit (4) and connected to said logic control unit (8), and in that said logic control unit (8) is configured to send a signal to said at least one machining group (7) to machine said edge (B) if said actual thickness value differs from said one or more nominal thickness values, in such a way to compensate for said thickness difference of said edge banding tape. The present invention also relates to an operation method of said the edge banding machine (1).