Food Stuffing Syringe Needle Motion Inertia Reduction
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Solution Overview
Problem
Existing stuffing syringe devices for food products face challenges with high inertial forces due to heavy moving parts, leading to low productivity and mechanical wear, or suffer from poor precision and maintenance issues with flexible tubes, such as dripping and tube deterioration.
Innovation Solution
A stuffing group design where only the perforated element (needle or nozzle) is set in alternate rectilinear motion, inserted within the dosing head, and driven by a sliding rod within a cylinder, ensuring direct product delivery with minimal moving mass and precise dosing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire stuffing group (hopper, head and head) moves linearly and alternately to perform stuffing operations, then the dosing operation can be completed, but high inertial forces are created due to the heavy moving mass, causing mechanical wear and limiting motion speed, which negatively affects productivity
Solution Approach 1:
The stuffing group is segmented into a stationary part (hopper and dosing head body) and a mobile part (only the perforated element/needle). This segmentation allows the heavy dosing head to remain fixed while only the lightweight needle moves, reducing inertial forces and mechanical wear on the moving components while maintaining the complete dosing function.
Solution Approach 2:
Instead of moving the entire dosing head as in conventional designs, the invention inverts the approach by keeping the dosing head stationary and moving only the needle. This reversal of the moving/stationary configuration eliminates the problem of high inertial forces while preserving the stuffing operation capability.
2Weight of moving object
If flexible tubes are used to connect the mobile needles to the fixed dosing head, then the moving mass is minimized and inertial forces are limited, but poor dosing precision and spring effect causing dripping occur, and the tubes deteriorate due to fatigue requiring maintenance
Solution Approach 1:
The flexible tube is extracted and removed from the system. Instead of using a flexible tube to connect the needle to the dosing head, the invention integrates the needle directly with a rigid channel that is part of the dosing head structure, eliminating the flexible tube and its associated problems of imprecision, spring effect, and fatigue failure.
Solution Approach 2:
A rigid channel integrated into the dosing head serves as an intermediary structure between the product supply and the needle. This rigid intermediary replaces the flexible tube, providing a stable, precise product flow path that eliminates the spring effect and fatigue issues while maintaining the connection between the stationary dosing head and the moving needle.
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 design achieves constant and precise dosing, high hourly production, and reduced maintenance requirements by minimizing inertial forces and eliminating issues associated with flexible tubes, such as dripping and premature wear.
Implementation Method 1
the movement, linearly and alternately, the entire stuffing group (hopper, or head and head) so as to bring the needles or the nozzles to the products, and then retract them when the injection operation has finished. The most important documents of the state of the art are : DE 476 013 C which discloses a stuffing syringe device according to the preamble of claim 1, US 3 428 000 A, DE 36 25 307 A1, US 2004/079 240 A1. Such an operation method involves the movement of a very heavy mass (hopper, head and head) and therefore, during the movement, considerable inertial force is created
Implementation Method 2
a product-containing hopper for liquid, semi-liquid or doughy stuffing products to be injected, by a dosing head, in which the stuffing product is pressurised
Data Source
Figure 1~2
Figure 3
AI summary
The present invention concerns a stuffing group for mounting on a syringe device for food products, of the type consisting of a product-containing hopper (T), a dosing head (2) and a dosing head (3), from which project one or more perforated elements (4), in the case in which an injection operation is carried out, or some distributor nozzles, during the course of an external depositing operation. Said perforated elements, in active phase, are positioned in the corresponding products to be stuffed (K). Such a stuffing group (1) is characterised in that the only element that is set in alternate rectilinear motion consists of the perforated element (4), which is always inserted in the body of the dosing head (3) and from which it directly receives the stuffing product.