Gravity-Assisted Potted Plant Packaging with Vacuum Unfolding
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Solution Overview
Problem
Existing devices for packaging potted plants with conical paper covers are complex, prone to errors, and costly, especially when using paper covers, which are stiffer and difficult to fully open due to their construction, limiting their universal use and accessibility for small gardening businesses.
Innovation Solution
A device and method where the packaging station is arranged between the feed and removal devices, utilizing gravity to guide the potted plant through a fall path, where the vacuum gripper unfolds the cover, and kinetic energy from the falling plant tears the cover from the supply, eliminating the need for complex mechanisms to move the unfolded casing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complex device with mechanisms to move unfolded covers upwards is used, then packaging of plastic covers is achieved, but device complexity increases and reliability decreases when using paper covers
Solution Approach 1:
The invention extracts the complex mechanism for moving unfolded covers from the system. Instead of using a device to move covers upward, the patent allows the potted plant to fall freely under gravity, eliminating the need for complex transport mechanisms while maintaining packaging functionality for both plastic and paper covers.
Solution Approach 2:
The invention inverts the traditional approach by instead of moving the cover upward to meet the plant, allowing the plant to fall downward into the cover. This reversal simplifies the mechanism while achieving the same packaging result and improves reliability with stiffer paper covers.
2Ease of operation
If vacuum gripper engages near top edge of flat cover, then cover is gripped for unfolding, but crease forms perpendicular to opening direction preventing complete opening
Solution Approach 1:
The invention applies preliminary action by engaging the vacuum gripper at the bottom edge of the cover first, then pulling upward to unfold. This reverse sequence prevents the formation of perpendicular creases that would block complete opening, allowing the cover to open fully along its entire height.
3Ease of manufacture
If paper covers are used, then cost is reduced, but covers are stiffer and difficult to fully open
Solution Approach 1:
The invention inverts the unfolding approach by pulling from the bottom edge upward instead of pushing from the top edge downward. This reversal allows stiffer paper covers to unfold completely without forming blocking creases, making paper covers viable for automated packaging.
4Productivity
If conventional packaging device is used, then plastic covers can be processed, but device is prone to failure with paper covers
Solution Approach 1:
The invention changes the critical parameter of gripper engagement position from top edge to bottom edge of the cover. This parameter change fundamentally alters the unfolding mechanics, preventing crease formation and enabling reliable processing of stiffer paper covers while maintaining productivity.
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 solution simplifies the packaging process, allows for easy processing of paper covers, and ensures complete opening of the cover, making the device structurally simpler and cost-effective for universal use, including with paper covers.
Implementation Method 1
at least one movable vacuum gripper with which a foremost flat cover of a supply of covers held in the holding device can be unfolded
Implementation Method 2
the packaging station is arranged in the direction of gravity between the feeding device and the removal device and comprises a drop path which can be traversed by the potted plant in the fall due to gravity
Implementation Method 3
kinetic energy from the falling plant tears the cover from the supply
Data Source
Figure 1~2
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AI summary
The invention relates to a device for packaging potted plants (2) with a cover (5), in particular with a cone-shaped cover (5), preferably made of paper, comprising a feeding device (1) with or on which potted plants (2) can be guided to a packaging station (3), and a packaging station (3) in which a potted plant (2) can be packaged with a cover (5), with a holding device (3c) for a supply of covers (5), and with at least one movable vacuum gripper (6a, 6b) with which a foremost flat cover (5) of a supply of covers (5) held in the holding device (3c) can be unfolded to form an upper insertion opening, and a removal device (4) on or with which a packaged potted plant (2) can be removed from the packaging station (3).wherein the packaging station (3) is arranged in the direction of gravity between the feeding device (1) and the removal device (4) and comprises a drop section (3b) which the potted plant (2) can traverse in a gravity-induced fall, and wherein at least one vacuum gripper (6a, 6b) and the holding device (3c) are arranged around the drop section (3b), in particular on opposite sides. The invention also relates to a method for packaging potted plants (2).