Corrugated Box Slotter Blade Positioning Control
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Solution Overview
Problem
The existing corrugated paperboard box making machines with slotter devices face challenges in accurately switching between single and double slotter modes due to the need for precise setting of current register values for slotter blades, which is crucial for proper positioning control, especially when switching production modes.
Innovation Solution
The corrugated paperboard box making machine is equipped with a slotter device having two slotter units with phase and displacement adjustment mechanisms, allowing for the acquisition of total blade lengths and precise positioning control through a control device that switches between production modes by adjusting the relative positions of stationary and displaceable blades.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the slotter device is configured to switch between single and double slotter modes, then the productivity and versatility of the machine is improved, but the manufacturing precision and reliability of positioning control deteriorates due to the complexity of managing multiple blade configurations
Solution Approach 1:
The slotter blades are designed to be movable rather than fixed, allowing them to be displaced between different positions. The displaceable slotter blades can be moved to different locations on the slotter cylinder to accommodate different blade configurations for single or double slotter modes, enabling dynamic adaptation without compromising positioning precision through rigid fixed structures
Solution Approach 2:
The system changes the positional parameters of the slotter blades to switch between production modes. By adjusting the displacement amounts of the displaceable slotter blades relative to the stationary slotter blades, the control device can accurately configure the total blade lengths and maintain precise positioning control across different operational modes
2Reliability
If the displaceable slotter blades are positioned close to the stationary slotter blades to minimize gaps, then the reliability of operation is improved, but the manufacturing precision of positioning deteriorates due to the difficulty of achieving exact alignment
Solution Approach 1:
The control device incorporates feedback mechanisms to detect and compensate for the actual positions of the displaceable slotter blades. By monitoring the displacement amounts and using this information to adjust positioning parameters, the system ensures reliable blade contact while maintaining measurement precision through continuous feedback correction
Solution Approach 2:
The system pre-adjusts the positioning parameters to account for potential gaps between blades. By calculating the displacement amounts in advance and incorporating buffer zones in the positioning control, the system prevents defective contact and damage while maintaining accurate positioning measurements
Data Source
AI summary
Disclosed is a corrugated paperboard box making machine 1 in which a slotter device 6 comprises: a first slotter unit 61 comprising a first slotter 610, a first stationary blade 612 and a first displaceable blade 613; and a second slotter unit 62 comprising a second slotter 620, a second stationary blade 622 and a second displaceable blade 623. A control device 100 is operable to switch the slotter device 6 between a first production mode and a second production mode. Specifically, the control device 100 is operable, when implementing the second production mode, to acquire and store a total blade length of the first stationary blade 612 and the first displaceable blade 613 and a total blade length of the second stationary blade 622 and the second displaceable blade 623, and perform positioning control for the slotter blades, based on the stored total blade lengths.