Method for inspecting elongated element
A slender element, ideal technology for applications, adoption of optical devices, food science, etc., which can solve problems such as no longer certainty, wrong acquisition of contours, etc.
Active Publication Date: 2018-07-17
GD SPA
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Problems solved by technology
[0024] However, if, over time, the arrangement between the projector and the PSD sensor is no longer ideal due to vibrations or positioning errors, it is no longer certain that the acquired highly curved profile corresponds to the cross-sectional profile of an actual rod-shaped article The actual acquisition of the contour and the wrong acquisition of the contour will occur
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[0050] In this specification, similar elements that are common to the illustrated embodiments are labeled with the same numerals.
[0051] Such as Figure 1 to Figure 18 As shown, the number 1 is used to denote as a whole the inspection group for cylindrical elongated elements for smoking articles.
[0052] The inspection group 1 may for example be integrated into a machine for the manufacture of continuous rods of fibrous material (eg containing tobacco fibers or fibers of filter material) for the tobacco industry, in which case the elongated element is a continuous filter rod or a continuous tobacco rod. The definition of "fibrous material" was provided above and will not be repeated below for the sake of brevity.
[0053] The inspection group 1 can also advantageously be integrated into a cigarette forming machine, in which case the elongated element can be a filter piece or a length of tobacco rod or cigarette, as already explained in detail above.
[0054] The inspectio...
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A method is proposed for inspecting cylinder-shaped elongated elements for smoking articles that provides projecting from a first half-space (3) a first stripe of light (5) onto an external face of afirst elongated element (2) and projecting from a second half-space (4) onto the first elongated element (2) a second stripe of light (9). The method reconstructs, by means of a first identified curved line (7') and a second identified curved line (10') respectively in a first acquired view and in a second acquired view of the first elongated element, a first closed curved section profile (12) ofthe first elongated element (2) and identifies possible deformations of the reconstructed first closed curved profile (12) with respect to an ideal section profile. The method further comprises the step of arranging an ideal elongated element (24) alongside the first elongated element (2), respectively in a reference position and in a first position, inspecting simultaneously the first elongated element (2) and the ideal elongated element (24) by the first stripe of light (5) and the second stripe of light (9); reconstructing, by a first identified curved line (25') and a second identified curved line (27') respectively in the first view and in the second view a first closed curved section profile (36) of the ideal elongated element (24); monitoring the reconstructed closed curved profile(36) of the ideal elongated element (24) generating a warning if the reconstructed closed curved profile (36) of the ideal elongated element (24) is different from an ideal section profile, for example circular.
Description
technical field [0001] The invention relates to a method for inspecting elongated elements of fibrous material, in particular rod-shaped elongated elements, in machines of the tobacco industry. [0002] In particular, the term "fibrous material" refers to fibers of filter material (e.g. cellulose acetate) used to form continuous filter rods in single- or two-wire machines for the production of smoking articles such as cigarette filters, used instead of Tobacco fiber used to form tobacco rods in single- or two-wire machines for the production of smoking articles such as cigarettes. [0003] Thus, the rod-shaped elongated element may be a continuous filter rod, or a filter rod segment or a filter segment in a smoking article, or a continuous tobacco rod, or a tobacco rod in a cigarette. [0004] In particular, the present invention relates to the inspection process of continuous rods comprising fibrous material, such as tobacco fibers or filter material fibers, to which the fol...
Claims
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IPC IPC(8): G01B11/24G01B11/245G01B11/25A24C5/34
CPCG01B11/2408G01B11/245G01B11/25A24C5/3412
Inventor 阿尔伯特·卡萨格兰德塞尔吉奥·莫瑞里吉尔伯托·斯皮里托卢卡·费代里奇
Owner GD SPA