Strapping Device Edge Protection Positioning
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Solution Overview
Problem
Strapping devices face challenges in increasing throughput due to the time-consuming process of detecting and positioning edge protection means, especially when packages have irregular shapes or sizes, leading to inefficiencies in the strapping process.
Innovation Solution
A position detection means is arranged in the infeed area of the strapping device to detect the package's position before it reaches the strapping position, allowing the arrangement device to move into position while the package is arriving, eliminating the need for a sensor on the arrangement device to detect the package edge and reducing the time required for positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sensor on the arrangement device is used to detect the package edge, then the positioning accuracy of the edge protection means is improved, but the processing time is increased due to the need to wait for package arrival and perform detection
Solution Approach 1:
The patent applies preliminary action by detecting the package position in advance using a means for detecting the position of the package arranged in the infeed area. The controller calculates the strapping position and determines the arrangement position before the package arrives, allowing the arrangement device to be pre-positioned rather than waiting for detection after arrival.
Solution Approach 2:
The controller determines the path to be covered by the arrangement device and calculates the movement timing in advance, enabling the arrangement device to move into position during the package's infeed movement rather than after the package has arrived and been detected by a sensor on the arrangement device.
2Measurement precision
If the arrangement device waits for the package to arrive before positioning, then the positioning accuracy is ensured, but the throughput of the strapping device is reduced
Solution Approach 1:
The system performs preliminary detection and calculation of the arrangement position while the package is still in the infeed area. The controller uses the detected infeed position to calculate where the package will be when it reaches the strapping position, and pre-determines the arrangement device's target position, allowing parallel execution of detection, calculation, and device movement.
Solution Approach 2:
The arrangement device moves into its arrangement position during the package's infeed movement, utilizing otherwise idle time. The detection, calculation, and positioning operations overlap in time, ensuring that no step waits for the completion of the previous step, thereby maintaining continuous productive action.
3Reliability
If additional sensors are added to the arrangement device for accurate detection, then the positioning reliability is improved, but the device complexity and working area obstruction are increased
Solution Approach 1:
The patent extracts the detection function from the arrangement device by placing a means for detecting the position of the package in the infeed area, separate from the arrangement device. This allows the arrangement device to focus solely on positioning the edge protection means without the added complexity of sensors and detection logic.
Solution Approach 2:
The controller acts as an intermediary that receives position detection data, calculates the strapping position, determines the arrangement position, and controls the arrangement device's movement. This intermediary processing eliminates the need for the arrangement device itself to have detection capabilities, reducing its complexity.
Data Source
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AI summary
The invention relates to a strapping device for strapping packages by means of a strapping element, comprising a packaging table, on which the package is guided through the device, vertical supports arranged laterally to the packaging table, on which vertical supports a pressing plate can be moved vertically, an arrangement apparatus for an edge protection element, which arrangement apparatus can be moved along a motion path on the pressing plate, and a controller, which moves the arrangement apparatus into an arrangement position for arranging the edge protection element on the package, wherein a means for the position sensing of the package is arranged in an entry region of the strapping device and the means for the position sensing senses an entry position of the package during the entry motion of the package.