Valve Bag Attachment Head Longitudinal Displacement
Solution Overview
Problem
Existing devices for attaching valve bags to filling spouts struggle to efficiently process valve bags of different widths due to the need for complex and costly adjustable couplings.
Innovation Solution
The attachment head and gripper device are made longitudinally displaceable on the machine frame, allowing for easy adaptation to various bag widths by adjusting the distance between the attachment device and the filling spout, with the gripper device moving in tandem to maintain a consistent relative position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the attachment device is made adjustable in the longitudinal direction to process different bag widths, then the adaptability to various bag widths is improved, but the device complexity and cost increase due to the need for a complicated displaceable coupling
Solution Approach 1:
The patent merges the attachment device and gripper device into a single displaceable attachment head assembly. This integration allows both components to move together as one unit, eliminating the need for complex independent adjustment mechanisms. The attachment head can be positioned at different longitudinal locations on the machine frame, and within this position, the gripper device can pivot to grip bags of various widths, achieving adaptability without requiring a complicated displaceable coupling between separate components
Solution Approach 2:
The attachment head is designed as a universal assembly that can process valve bags of different widths by simply changing its longitudinal position on the machine frame. The gripper device within the attachment head serves multiple functions: it can pivot between a first position to grip the bag and a second position to transfer the bag to the attachment device, while the entire assembly can be repositioned to handle different bag dimensions. This multi-functional design eliminates the need for multiple specialized devices or complex adjustment mechanisms
2Adaptability or versatility
If the attachment head is displaced towards the filling spout to process smaller width bags, then the adaptability to smaller bags is improved, but the operational complexity increases due to multiple positioning requirements
Solution Approach 1:
The attachment head is designed with dynamic positioning capability, allowing it to be displaced along the longitudinal direction of the filling spout to different locations. This dynamic adjustment enables the system to adapt to bags of various widths by simply moving the attachment head to the appropriate position. The gripper device also incorporates dynamic pivoting motion between grip and transfer positions, allowing flexible handling of different bag sizes without complex operational procedures
3Adaptability or versatility
If the gripper device is adjusted separately to handle different bag widths, then the adaptability is improved, but the transfer consistency and reliability deteriorate due to changing relative positions
Solution Approach 1:
The patent combines the attachment device and gripper device into a single displaceable attachment head that moves as one integrated unit. This merging ensures that the relative position between the gripper device and attachment device remains constant during operation. When the attachment head is displaced to handle different bag widths, both components move together, maintaining their consistent spatial relationship and ensuring reliable bag transfer from the gripper to the attachment device without requiring separate adjustments
Data Source
Figure 1
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AI summary
Device for attaching valve bags (12) to a filling nozzle (6) of a filling device (2), comprising a stationary machine frame (18) on which an attachment head (16) is held, wherein the attachment head comprises a movable gripper device (24) and an attachment device (22), and the gripper device is designed for grasping a valve bag and transferring it to the attachment device, and the attachment head (169) is designed for opening a valve of a valve bag and accelerating a valve bag in a longitudinal direction (14) for attachment to a filling nozzle (6), characterized in that the attachment head (16) is slidably held on the machine frame (18) in the longitudinal direction (14).