Labeling Machine Work Drum Pressure Detection
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Solution Overview
Problem
Existing labeling machines rely on photocells to detect the presence or absence of labels on the work drum, which complicates drum replacement, fails to detect transparent labels, and occupies external space.
Innovation Solution
A labeling machine equipped with pressure sensors integrated within the vacuum distribution unit to detect pressure changes caused by the presence or absence of labels on the work drum, allowing for label detection without external space occupation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If photocells are arranged around the work drum to detect label presence, then label detection is achieved, but device complexity increases and external space is occupied
Solution Approach 1:
The detection function is merged with the existing vacuum distribution unit. Pressure sensors are integrated into the vacuum distribution unit, which already surrounds the work drum. This combines the detection system with an existing component, eliminating the need for separate external photocell arrangements and reducing overall device complexity while maintaining label detection capability.
Solution Approach 2:
The optical detection system (photocells) is replaced with a pressure-based detection system. Instead of using light to detect label presence, the invention uses pressure sensors to detect changes in pressure within the vacuum distribution unit caused by label presence or absence on the work drum surface.
2Measurement precision
If photocells are positioned close to the work drum surface for accurate detection, then detection precision improves, but drum replacement becomes difficult
Solution Approach 1:
The detection system is merged with the vacuum distribution unit that is already integrated with the work drum assembly. Since the vacuum distribution unit moves with the drum, the pressure sensors maintain their relative position and detection precision without requiring separate adjustment mechanisms, facilitating easier drum replacement.
3Reliability
If photocells are used for label detection, then label presence can be detected, but transparent labels cannot be detected reliably
Solution Approach 1:
The optical detection system is replaced with a pressure-based detection system that detects physical presence rather than optical properties. Pressure sensors measure changes in pressure within the vacuum distribution unit caused by the physical presence or absence of labels on the work drum surface, making detection independent of label color, transparency, or optical characteristics.
4Reliability
If multiple photocells are arranged around the work drum for comprehensive detection, then detection coverage improves, but device complexity and space occupation increase
Solution Approach 1:
The detection function is merged with the vacuum distribution unit that already surrounds the work drum. Pressure sensors are integrated into this existing structure, eliminating the need for separate external detection devices. This maintains comprehensive detection coverage while avoiding additional external space occupation.
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 effectively detects label presence or absence independently of label color and without external space usage, simplifying drum replacement and improving operational reliability.
Implementation Method 1
a work drum (8), which can move in rotation about its own axis and which has, on its own lateral surface, suction ports (9) which can be connected, by way of connection means (10), to suction means (11), in order to allow the work drum (8) to receive so as to adhere, to its own lateral surface, the labels (7) to be transferred to the containers (3)
Implementation Method 2
there are present, within the lateral space occupation of said work drum (8), means for detecting the presence or absence of the labels (7) on the work drum (8), said means for detecting comprising at least one sensor (18) for detecting the pressure within the connection means (10)
Data Source
AI summary
A labeling machine includes a conveyance device for containers to be labeled along an advancement path and at least one labeling assembly, which is arranged along the advancement path of the containers. The labeling assembly includes a work drum which can move in rotation about its own axis and has, on its own lateral surface, suction ports which can be connected, by way of connection elements, to suction mechanisms, in order to allow the work drum to receive so as to adhere, to its own lateral surface, the labels to be transferred to the containers that transit on the conveyance device. Detectors detect the presence or absence of the labels on the work drum. The detectors include at least one sensor for detecting the pressure in the connection elements.