Label Stacking Machine with Rotary Die and Vacuum Pick-Head
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Solution Overview
Problem
Existing methods for stacking labels are inefficient, requiring manual breaking down of sheets, sorting, and containerization, and involve the use of separate release liners that need to be peeled and discarded, wasting time and resources.
Innovation Solution
A method and machine that cut and stack labels into partially connected pads using a rotary die, with a robot arm and vacuum pick-head to arrange labels, eliminating the need for separate release liners and allowing direct peeling and sticking, while sequencing according to a store's planogram for efficient installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual breaking down and sorting of label sheets is used, then labels can be arranged into pads, but time consumption and labor intensity increase significantly
Solution Approach 1:
The patent replaces manual mechanical operations with an automated system comprising a robot arm, vacuum pick-head, and cutting mechanism. The robot arm automatically picks up labels from sheets, cuts them to size, and stacks them into pads without human intervention, thereby eliminating the time-consuming manual breaking and sorting process while dramatically improving productivity
Solution Approach 2:
The system performs preliminary cutting of labels to size before stacking them into pads. The cutting mechanism pre-processes the labels by cutting through the substrate and lamination material along predetermined boundaries, creating individually sized labels that are ready for immediate stacking. This preliminary action eliminates the need for manual breaking down during the stacking process
2Ease of operation
If separate release liners are used for each label, then labels can be peeled and stuck individually, but material waste increases due to discarded liners
Solution Approach 1:
The patent merges the release liner function across multiple labels by maintaining a single continuous liner that underlies several labels simultaneously. Instead of having separate liners for each label, the system uses one shared liner that can be peeled away after all labels are stacked into the pad. This merging approach eliminates the waste associated with multiple individual liners while preserving the ease of peeling and sticking operation
Solution Approach 2:
The continuous release liner serves as an intermediary between the adhesive strips and the external environment during the stacking process. The liner remains in place while labels are being positioned and stacked, protecting the adhesive surfaces. Only after the entire pad is assembled is the single liner removed, allowing all labels to be peeled and stuck together as a unit, thereby minimizing waste while maintaining operational ease
3Manufacturing precision
If rotary die cutting is used to cut labels, then cutting precision and speed improve, but the complexity of the cutting mechanism increases
Solution Approach 1:
The rotary die mechanism is designed to perform multiple functions: it cuts through the substrate, cuts through the lamination material, and simultaneously creates precise boundaries between adjacent labels. The single rotary die assembly handles all cutting operations for the entire sheet in one rotation, eliminating the need for separate cutting mechanisms for each layer. This multi-functionality justifies the mechanism's complexity by delivering high precision and speed in a single integrated operation
4Extent of automation
If robot arm with vacuum pick-head is used for stacking, then automation level and stacking precision improve, but device complexity and initial cost increase
Solution Approach 1:
The vacuum pick-head is designed to automatically adapt to the label surface characteristics. The vacuum force self-regulates based on the contact area between the pick-head and the label, eliminating the need for complex programming or manual adjustment. The system serves itself by using the vacuum pressure differential to naturally grip and release labels at the appropriate times, achieving high automation with relatively simple control logic
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
This approach saves time and minimizes waste by eliminating the need for manual label breaking and sorting, allowing for precise alignment and efficient installation of labels directly from pads, reducing the need for separate release liners and streamlining the installation process.
Implementation Method 1
a robot arm and vacuum pick-head to arrange labels
Data Source
AI summary
A method of making a pad of labels comprises: printing display information on a top surface of a substrate; affixing a first layer of lamination material to a bottom surface of the substrate; affixing a second layer of lamination material to the top surface of the substrate, the second layer of lamination material having a release coating applied to a top surface thereof; applying an adhesive strip to a bottom surface of the first layer of lamination material, the adhesive strip being covered by a liner material; cutting the substrate having first and second layers of lamination material affixed into at least one label; removing the liner material to expose the adhesive strip after cutting the substrate into at least one label; and arranging the labels into a pad of labels.