Reel Support Device Locking Mechanism for Packaging Machines
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Solution Overview
Problem
Existing support devices for reels in packaging machines are cumbersome to couple and uncouple, requiring manual dismounting of clamping groups and potentially disrupting production.
Innovation Solution
The support device incorporates a locking device that allows for easy coupling and uncoupling of reels without dismounting the second clamping group from the spindle, utilizing a mechanism where the locking device can be controlled between active and rest configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual dismounting of clamping groups is used to couple/uncouple reels, then the reel can be attached to the support device, but the operation becomes cumbersome and disrupts production
Solution Approach 1:
The locking device automatically engages with the tubular holder when the reel is inserted, and automatically disengages when the reel is removed. The spring mechanism self-activates to lock the reel in position without requiring manual intervention to mount or dismount the clamping groups, making the system serve itself rather than requiring operator intervention for these routine operations
Solution Approach 2:
The clamping mechanism is divided into separate functional components: the second clamping group remains permanently mounted on the spindle as a fixed structure, while the locking device is segmented into movable locking elements that can independently engage and disengage from the tubular holder. This segmentation allows the permanent clamping structure to remain in place while only the locking elements move during reel changes
2Ease of operation
If the second clamping group is permanently mounted on the spindle, then reel coupling is simplified, but the mechanism requires a locking device to prevent accidental disengagement
Solution Approach 1:
The locking elements act as intermediaries between the permanently mounted second clamping group and the tubular holder. These locking elements translate the simple insertion motion into a secure locked position by engaging with grooves or surfaces on the tubular holder, providing automatic locking without requiring complex manual locking procedures
Solution Approach 2:
The spring mechanism provides self-activating locking force that automatically engages the locking elements with the tubular holder upon reel insertion. The system uses the insertion motion itself to trigger the locking action through spring compression and release, rather than requiring separate manual locking steps
3Productivity
If manual uncoupling is required for reel changes, then the clamping mechanism can be simple, but production is disrupted by operational interruptions
Solution Approach 1:
When the reel is removed from the support device, the locking elements automatically disengage from the tubular holder due to the spring mechanism returning to its uncompressed state. This self-activating uncoupling process eliminates the need for manual intervention to release the reel, allowing rapid reel changes without disrupting production flow
Solution Approach 2:
The locking elements are designed as movable dynamic components that can transition between engaged and disengaged states. This dynamic design allows the locking mechanism to automatically adapt to the presence or absence of the reel, providing secure locking during operation and automatic release during reel changes without requiring manual intervention
Data Source
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AI summary
There is described a support device (25) for carrying a reel (11) having a tubular holder (26) and a web of packaging material (3) wound about the tubular holder (26). The support device (25) comprises a spindle (31) extending along a longitudinal axis (E), a first clamping group (32) and a second clamping group (33) connected to the spindle (31) and configured to clamp the reel (11) between one another. The first clamping group (32) being configured to laterally engage the reel (11) from a first side and the second clamping group (33) being configured to laterally engage the reel (11) from a second side opposite to the first side. The second clamping group (33) comprises a locking device (34) controllable between an active configuration in which the locking device (34) is configured to engage the second side of the reel (11) for clamping the reel (11) in cooperation with the first clamping group (32) and a rest configuration in which it is possible to introduce the first clamping group (32) into the tubular holder (26) and to move the second clamping group (33) within the tubular holder (26).