Glue Dispensing Pressure Feedback for Consistent Barrel Discharge
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Solution Overview
Problem
Conventional pneumatic dispensing controllers lack the ability to monitor gas pressure waveforms in glue barrels, leading to frequent adjustments of dispensing parameters, inconsistent glue discharge, and potential sudden stops due to insufficient glue, affecting automatic dispensing processes and production lines.
Innovation Solution
A dispensing control apparatus with a first gas pressure sensor to monitor real-time gas pressure and a control device that adjusts parameters and alarms for insufficient glue, incorporating a suck-back gas pressure generating device for self-adaptive feedback control, ensuring consistent glue discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional pneumatic dispensing controllers are used without gas pressure waveform monitoring, then the device complexity is reduced, but the dispensing precision and reliability deteriorate due to inability to monitor glue barrel gas pressure
Solution Approach 1:
The patent introduces a gas pressure sensor that continuously monitors the gas pressure waveform in the glue barrel and feeds this information back to the control device. The control device adjusts dispensing parameters based on the real-time pressure data, achieving closed-loop control that maintains dispensing precision while adapting to changing glue levels.
Solution Approach 2:
The patent replaces manual parameter adjustment by operators with automated electronic control based on gas pressure waveform analysis. The control device automatically modifies dispensing parameters according to the monitored pressure data, eliminating the need for frequent manual interventions and maintaining consistent dispensing quality.
2Manufacturing precision
If dispensing parameters are frequently adjusted by operators to maintain glue discharge consistency, then the dispensing precision may be maintained, but the productivity decreases due to repeated interruptions and testing
Solution Approach 1:
The system performs self-adjustment of dispensing parameters through automated feedback control. The control device continuously monitors gas pressure waveform characteristics and automatically modifies dispensing parameters without operator intervention, enabling the system to maintain dispensing precision while operating autonomously throughout the entire glue barrel cycle.
Solution Approach 2:
The gas pressure sensor operates continuously to monitor the dispensing process from when the glue barrel is full until glue depletion. This continuous monitoring enables uninterrupted automated parameter adjustment, eliminating the discontinuous manual intervention cycle and maintaining continuous productive operation.
3Manufacturing precision
If manual parameter adjustment is used when glue residual amount decreases, then the dispensing precision can be partially maintained, but the reliability deteriorates due to sudden glue spot appearance and abnormal dispensing stops
Solution Approach 1:
The system detects changes in gas pressure waveform characteristics that indicate decreasing glue residual amount before actual glue depletion occurs. Based on these preliminary detections, the control device proactively adjusts dispensing parameters to prevent sudden glue spot appearance and ensures continuous reliable operation until the glue barrel is genuinely empty.
Solution Approach 2:
The continuous feedback from the gas pressure sensor enables the control device to detect subtle changes in the pressure waveform that correlate with glue level depletion. This feedback mechanism allows the system to anticipate and compensate for upcoming glue shortages, maintaining dispensing reliability throughout the entire process.
4Measurement precision
If gas pressure sensor is added to monitor real-time pressure waveform, then the measurement precision and control reliability are improved, but the device complexity increases
Solution Approach 1:
The gas pressure sensor serves multiple functions: it monitors gas pressure for dispensing control, detects glue residual amount through waveform analysis, and provides feedback for automated parameter adjustment. This multi-functionality justifies the addition of the sensor by delivering multiple benefits from a single component.
Solution Approach 2:
The gas pressure waveform acts as an intermediary that carries information about the glue barrel state (fill level, dispensing status, residual amount) to the control device. By monitoring this intermediate physical quantity, the system indirectly obtains comprehensive information about the dispensing process without requiring direct measurement of glue level or other difficult-to-access parameters.
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 solution enables self-adaptive adjustment of dispensing parameters, predicts residual glue amounts accurately, and prevents sudden stops by alerting operators to insufficient glue, ensuring high consistency and efficiency in glue discharge from full to empty barrels.
Implementation Method 1
a first gas pressure sensor arranged between the gas outlet of the first exhaust valve and the first output interface and configured to acquire a real-time gas pressure in a pipeline connected between the first exhaust valve and the first output interface
Implementation Method 2
a first pressure reducing device arranged in the machine body and including a gas inlet end connected to the first input interface
Implementation Method 3
a first exhaust valve arranged in the machine body and including a gas inlet connected to a gas outlet end of the first pressure reducing device
Implementation Method 4
the control device is further configured to continuously receive the real-time gas pressure acquired by the first gas pressure sensor, process the real-time gas pressure in real time and extract a characteristic parameter of gas pressure increasing
Data Source
Figure 1
Figure 2~3b
Figure 4~6
AI summary
A dispensing control apparatus (1000) includes a machine body provided with a first input interface (110), a first output interface (120) and a second output interface (130), a first pressure reducing device (200), a first exhaust valve (300), a second exhaust valve (400), a first gas pressure sensor (500) and a control device (600) arranged in the machine body. The first gas pressure sensor (500) is arranged between the gas outlet of the first exhaust valve (300) and the first output interface (120) and configured to acquire a real-time gas pressure in a pipeline connected between the first exhaust valve (300) and the first output interface (120). The control device (600) is configured to continuously receive the real-time gas pressure acquired by the first gas pressure sensor (500), process the real-time gas pressure in real time and extract a characteristic parameter of gas pressure increasing.