Bag Opening Device with Arrowhead Blades and Locking Frame
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Solution Overview
Problem
Existing bag cutting devices, especially those with cone-like blade structures, cause bags to tilt uncontrollably, leading to unstable and unsafe opening of bags containing loose materials.
Innovation Solution
A device featuring sharp-pointed elements in the shape of arrowheads mounted on profiles attached to a lower frame, with a movable frame and a locking mechanism using springs to stabilize the bag and control the sharp-pointed elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a cone-like blade structure is used for cutting bags, then the cutting function is achieved, but the bag tilts uncontrollably during opening
Solution Approach 1:
The cutting device is segmented into multiple functional components: a stable base structure with flat cutting surface, separate blade mechanisms, and distinct bag positioning elements. This segmentation allows each component to perform its specific function independently, preventing the bag from tilting while maintaining cutting effectiveness.
Solution Approach 2:
Instead of using a cone-like structure that causes instability, the invention inverts the approach by using a flat, stable base structure with upward-pointing cutting elements. This inversion of the traditional cone geometry eliminates the tilting problem while maintaining the cutting function.
2Productivity
If sharp cutting elements are exposed for effective cutting, then cutting efficiency is improved, but safety risks increase due to uncontrolled movement
Solution Approach 1:
The cutting elements are designed to be dynamic rather than permanently exposed. The blades can be positioned and retracted as needed, allowing the device to switch between a safe stored state and an active cutting state. This dynamic design maintains cutting efficiency while minimizing safety risks during handling and storage.
Solution Approach 2:
Safety guards or protective covers act as intermediaries between the operator and the sharp cutting elements. These protective elements can be positioned over the blades when not in use, preventing accidental contact while allowing quick access when cutting is required.
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
The device ensures safe and stable opening of bags by preventing unwanted movement and allowing for efficient emptying of the bag's contents over a larger area.
Implementation Method 1
a mechanism locking and comprising at least one profile with an hole adapted in size to the dimensions of the sharp-pointed elements and positioned over the profile with the sharp-pointed elements
Implementation Method 2
the pins are ended on one side with a spherical swelling or a joint
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The subject of invention is a device (1) for opening bags, in particular bags containing loose materials, consisting of sharp-pointed elements (6) mounted in at least one row and fixed on at least one profile (5), characterized in that the sharp-pointed elements (6) are shaped like an arrowhead and the ends of at least one profile (5) are in which they are embedded are attached to the perimeter of the lower frame (2) of the device (1), with a movable frame (3) placed above the lower frame (2), movably connected to the lower frame (2) by means of pins placed at the corners of the frames (2, 3) and a locking mechanism (4), and containing at least one profile (7) with a hole adapted to the dimensions of the sharp-pointed elements (6) and positioned over the profile (5) with the sharp- pointed elements (6), the device (1) further comprises handles (9) attached to the lower frame (2).