Anti-rotation device for a gripping member of a mixing machine for fluid products contained in a closed container

Abstract

Anti-rotation device (10) for a gripping member (20) of a mixing machine (40) for fluid products contained in a closed container (13). The mixing machine (40) comprises a fixed structure (44) and the gripping member (20) comprises a supporting structure (21) rotary with respect to the fixed structure (44) and on which two gripping elements (22, 23) are mounted, able to be selectively moved nearer to or farther from each other by means of a screw (25), in order to determine the temporary clamping of the container (13) with respect to the supporting structure (21). The device (10) comprises clamping members (11) associated coaxially with the screw (25) in order to keep it temporarily constrained angularly with respect to the supporting structure (21) of the gripping member (20), and unclamping members (12) mounted on the fixed structure (44) in order to be selectively moved, so as to cooperate with the screw (25), so as to de-activate the action of the clamping members (11) and to de-constrain the angular movement of the screw (25) with respect to the supporting structure (21), and actuation members (30, 50) able to automatically and selectively command both the unclamping members (12) and also the clamping members (11).

Description

technical field [0001] The invention relates to an anti-rotation device for the holder of a mixer capable of mixing fluid products contained in closed containers, such as coloring fluids, bases for paints, creams, lip glosses, inks, etc., to form paints of a defined color . In particular, the device according to the invention is applied to a clamp capable of temporarily clamping the container during the rotary mixing movement in order to prevent accidental release of the clamp during the mixing phase. Background technique [0002] Mixing machines (also known as mixers) are well known for mixing fluid products together, such as mixing dyes of different shades or colors, and / or mixing dyes added to a substrate to form paints of a defined colour. [0003] These known machines perform the mixing of fluid products by rotary motion, rotary motion, orbital motion, rocking or other means of movement, and usually include a rotating or rocking unit, which is used to make the closed c...

AI Technical Summary

Problems solved by technology

[0006] Due to the rotary or oscillating motion of the mixing stage, and the resulting vibrations, the screw element can loosen, i.e. turn itself through some angle, causing the clamping plates to move away from each other and thus loosening the grip on the container

[0007] This shortcoming can lead not only to less than optimal mixing of fluid products, but also to accidental release of the container during the mixing phase, possibly causing damage to the container and, more seriously, injury to machinery or workers

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