Tie-Cutting Carriage With Mechanical Link Detection
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Solution Overview
Problem
Existing systems for cutting ties surrounding batches of elements, such as cardboard boxes, face challenges with precise location due to color similarities or external light interference, leading to increased costs and complexity, and require multiple devices or machines for extraction.
Innovation Solution
A tie cutting carriage with a movable frame, spacer tab, guide, presence detector, and cutting blade that allows for blind detection and cutting of ties without prior location, using mechanical contact and tensioning to facilitate cutting, reducing the need for additional locating means and minimizing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a camera-based location means is used to identify the link, then the link can be visually located, but location errors occur when the link color is similar to the element surface or when colored bands are present
Solution Approach 1:
The patent replaces the optical camera-based detection system with a mechanical detection system. The front end of the spacer tab physically contacts the link and element surface, using mechanical touch rather than visual identification. This mechanical contact method is not affected by color similarities or lighting conditions, thereby resolving the contradiction between location accuracy and identification reliability.
Solution Approach 2:
The spacer tab acts as an intermediary mechanical element between the cutting means and the link. It physically inserts itself between the link and the element surface, creating a mechanical bridge that enables detection and cutting without relying on visual identification. This intermediary mechanism solves the problem of unreliable optical detection.
2Ease of manufacture
If multiple devices or machines are used for cutting and extraction, then the cutting function is achieved, but the cost increases significantly
Solution Approach 1:
The patent merges the cutting means and the spacer tab into a single integrated carriage assembly. The cutting blade is mounted on the same carriage that carries the spacer tab, allowing both the detection (via spacer tab insertion) and cutting functions to be performed by one device. This integration eliminates the need for separate cutting machines and extraction devices, reducing overall system complexity and cost.
Solution Approach 2:
The carriage assembly serves multiple functions: it positions the cutting blade, provides mechanical detection through the spacer tab, and performs the actual cutting. This multi-functional design replaces what would traditionally require multiple specialized devices, thereby reducing device complexity while maintaining manufacturing capability.
3Ease of operation
If a controlled vice clamp is used to grip the link, then the link can be secured for cutting, but precise location beforehand is required which fails with color-matched links
Solution Approach 1:
The spacer tab performs a preliminary mechanical action by inserting itself between the link and the element surface before the cutting operation. This preliminary insertion physically engages with the link, establishing contact and position without requiring prior visual location. This preliminary mechanical engagement enables subsequent gripping and cutting operations to proceed reliably.
Solution Approach 2:
The patent replaces the camera-based preliminary location step with a mechanical contact system. The spacer tab's physical insertion and contact with the link provide the necessary positioning information mechanically, eliminating the need for optical location that fails with color-matched links.
4Adaptability or versatility
If external light conditions vary, then the environment is flexible, but the visibility of the link is impacted affecting detection
Solution Approach 1:
The patent replaces the optical detection system that is sensitive to lighting conditions with a mechanical detection system. The spacer tab's physical contact with the link and element surface provides detection information that is completely independent of external light conditions, thereby maintaining measurement precision across varying environmental lighting while preserving environmental adaptability.
Data Source
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AI summary
One aspect of the invention relates to a tie cutting carriage (200) for cutting a tie (32) surrounding a batch of elements (30) comprising: - a movement frame (202) and a cutting frame (204), - a spacer tab (210) mounted integrally on the cutting frame and comprising a ramp surface (212) comprising a front end (210A) configured to slide between a tie and a reference surface (30A) of the batch of elements so that the ramp surface separates the tie from the reference surface during movement of the movement frame, - a guide (220) mounted integrally on the cutting frame to guide the front end of the tab relative to the reference surface, - a presence detector (230) of a tie which is in contact with the tab, and - a cutting blade (240) configured to cut the tie.