Package Cutting Apparatus with Adjustable Second Blade
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Solution Overview
Problem
Existing package cutting apparatuses require significant design effort and pose a risk of injury to operators during format changes and blade adjustments, as they involve manual intervention with sharp cutting blades.
Innovation Solution
An apparatus with a second drive shaft for a second cutting blade mounted rotatably about a rotation axis, featuring an adjusting device with a movable actuating element that adjusts the position and pressing force of the second cutting blade relative to the first cutting blade, allowing for safer and more straightforward format changes and adjustments, including the use of pneumatically operated actuators and force sensors for precise control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual adjustment of cutting blades is performed, then the pressing force and position can be regulated, but the risk of injury to operators increases and design effort is required
Solution Approach 1:
The system performs automatic blade adjustment and format changes without operator intervention. The control unit automatically controls the drive shafts and adjusting devices to change formats and regulate pressing forces, eliminating the need for operators to manually handle sharp cutting blades.
Solution Approach 2:
Manual mechanical adjustment is replaced by an automated control system. The control unit receives format change commands and automatically actuates the adjusting devices (such as pneumatic or hydraulic actuators) to position the cutting blades and regulate pressing forces, substituting human operation with automated mechanical control.
2Adaptability or versatility
If cutting blades are arranged on different cutting shafts to enable strip cut, then cutting versatility is improved, but the complexity of adjusting relative arrangement increases
Solution Approach 1:
The control unit serves multiple functions: it controls both the drive shafts for blade rotation and the adjusting devices for blade positioning and pressing force regulation. This centralized control system manages all cutting configurations (single blade, paired blades, strip cuts) through a single interface, reducing operational complexity despite increased mechanical versatility.
Solution Approach 2:
The system employs adjustable and movable components that can be dynamically reconfigured. The second cutting blade is mounted rotatably about a rotation axis with an adjusting device that can change the blade's position and pressing force dynamically. This allows the system to adapt to different cutting formats and configurations on demand rather than requiring fixed arrangements.
3Adaptability or versatility
If format changes are performed manually, then the apparatus can be reconfigured, but the time and effort required for changeover work increases
Solution Approach 1:
The control unit is pre-programmed with format change parameters and sequences. When a format change is required, the control unit automatically executes the pre-planned adjustment sequence, moving the cutting blades to the correct positions and setting the appropriate pressing forces without requiring operators to perform manual measurements and adjustments.
Solution Approach 2:
Manual format change operations are completely replaced by automated mechanical control. The control unit actuates the adjusting devices (pneumatic cylinders, hydraulic actuators, or electric motors) to reposition cutting blades and regulate pressing forces, eliminating the time-consuming manual intervention previously required for format changes.
Data Source
AI summary
An apparatus for cutting packages includes a first drive shaft for driving a first cutting blade and a second drive shaft, arranged parallel to the first drive shaft, for driving a second cutting blade, where the second cutting blade is mounted rotatably about a rotation axis. The apparatus also includes an adjusting device assigned to the second cutting blade and having a movable actuating element. The actuating element is adapted to adjust a position of the second cutting blade and/or a pressing force of the second cutting blade on the first cutting blade and the actuating element is mounted movably along a direction parallel to the rotation axis and at a distance from the rotation axis.