Venetian Blind Slat Hook Application Device with Movable Matrix
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Solution Overview
Problem
Existing devices for applying hooks or clips to Venetian blind slats with folded edges and abutment gaskets pierce the gaskets, reducing their flexibility and accelerating wear over time.
Innovation Solution
A device with a guide and matrix system that positions the slat to keep the abutment gasket's covering tongue clear of the hook or clip application area, using a movable appendage to interpose between the edge and the tongue, preventing it from being locked inside the matrix during application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If hooks or clips are applied to the folded edges of slats using existing devices, then the hooks are securely fastened to the slats, but the abutment gasket's covering tongue is pierced and locked, reducing its flexibility and accelerating wear
Solution Approach 1:
The matrix is divided into two separate portions (first portion M1 and second portion M2) that can move independently relative to each other. This segmentation allows the first portion to carry the hook application mechanism while the second portion remains stationary, enabling selective engagement with the slat edge without piercing the gasket tongue.
Solution Approach 2:
The slat L is preliminarily positioned in the guide A with its edge B aligned to the matrix M before hook application. This preliminary positioning ensures that the edge is correctly oriented and located, allowing the hook to be applied precisely to the folded edge without deviating to pierce the gasket tongue.
Solution Approach 3:
The guide A acts as an intermediary element that positions and constrains the slat L during the hook application process. By providing a defined track and positioning mechanism, the guide ensures the slat is correctly oriented relative to the matrix, preventing the hook from piercing the gasket tongue.
2Manufacturing precision
If a matrix system is used to lock the folded edge during hook application, then precise positioning is achieved, but the covering tongue may be inadvertently locked inside the matrix and pierced
Solution Approach 1:
The matrix portions M1 and M2 are designed to be movable relative to each other, transitioning between open and closed positions. This dynamic capability allows the matrix to adapt its state based on the operational phase: open during positioning to accommodate the gasket tongue freely, and closed during hook application to secure the edge precisely without trapping the tongue.
Solution Approach 2:
The slat edge is preliminarily positioned in the guide before the matrix closes, ensuring correct alignment. This preliminary positioning action prevents the covering tongue from being inadvertently locked inside the matrix during the subsequent closing and hook application operations.
Data Source
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AI summary
The invention relates to a device for applying hooks or clips to the slats of Venetian blinds. It comprises a guide for positioning a slat L on a reference plane m and at least a first matrix 10 that defines a seat 13 designed to receive a portion of an edge of the slat Bl. The seat 13 is formed at the interface between a first 11 and a second portion 12 into which the first matrix 10 is divided. These two portions are movable in relation to the reference plane m between a closed position, wherein the two portions are positioned alongside each other to close the seat around the portion of edge and at least one open position, wherein the two portions are distanced from one another to open the seat and thus free the movement of the slat. A first portion 11 of the matrix is provided with a projecting appendage 15 destined to skim the edge of the slat. In passing from the open position to the closed position, the first portion 11 is movable so as to move this projecting appendage from a position outside the track 2 to an inside position of the track, so that this appendage crosses the edge of the slat, remaining in the half-space 02 not occupied by the slat and tangent to the reference plane m. This invention also covers a method of applying hooks.