Abstract
The present invention relates to a decoration method, for applying a new dcor (170) on a surface (2) of an object (1) including an existing dcor (120), characterized in that the method comprises the following successive steps: a step a) for measuring at least two identification points (120a, 120b, 120f) of the existing dcor (120) applied on the surface (2) of the object (1); a step b) for dynamic correction of localization points (170a, 170b, 170f) of the new dcor (170) to be applied on the surface (2) of the object (1), using the identification points (120a, 120b, 120f) measured during the measuring step a); and a step c) for application of the new dcor (170) on the surface (2) of the object (1), by using the localization points (170a, 170b, 170f) determined in the dynamic correction step b). The invention also relates to a control system and a decoration machine comprising such a control system.
Claims
1. A decoration method for applying a new dcor on a surface of an object including an existing dcor, the method comprising: measuring at least two identification points of the existing dcor applied on the surface of the object; identifying localization points to be used for applying the new dcor on the surface of the object, the localization points identified using information relating to a theoretical dcor and the at least two identification points that are measured, wherein the theoretical dcor represents an intended placement of the new dcor on the surface of the object; and applying the new dcor on the surface of the object using the localization points, wherein the existing dcor and the new dcor comprise neighboring borders that are rectilinear and substantially parallel projected in a plane, wherein the identification points are measured only along a first direction, wherein the new dcor is applied such that a substantially constant gap between the existing dcor and the new dcor is defined along a second direction orthogonal to the first direction.
2. The decoration method according to claim 1, wherein the identification points comprise one or more of at least one starting point or at least one ending point of the existing dcor.
3. The decoration method according to claim 1, wherein the identification points are measured along two directions.
4. The decoration method according to claim 1, wherein the existing dcor and the new dcor comprise neighboring borders that are one or more of non-rectilinear or non-parallel, and in that wherein the identification points are measured along the border of the existing dcor.
5. The decoration method according to claim 1, wherein the existing dcor and the new dcor comprise several discontinuous sections.
6. The decoration method according to claim 5, wherein the identification points comprise one or more of at least one starting point or at least one ending point for each of the discontinuous sections of the existing dcor.
7. The decoration method according to claim 1, wherein the identification points comprise at least a starting point of the existing dcor and an ending point of the existing dcor.
8. A method comprising: measuring identification points of a first portion of a multi-part dcor on a surface of an object, the multi-part dcor formed from multiple portions that includes the first portion, the identification points measured on the first portion of the multi-part dcor after the first portion has been applied to the surface of the object but prior to application of at least a second portion of the multi-part dcor to the surface of the object; identifying localization points to be used for applying at least the second portion of the multi-part dcor to the surface of the object, the localization points identified using information relating to the multi-part dcor and the identification points that are measured; and applying at least the second portion of the multi-part dcor to the surface of the object using the localization points.
9. The method of claim 8, wherein the first and second portions of the multi-part dcor are adjacent to each other on the surface of the object subsequent to applying the second portion of the multi-part dcor.
10. The method of claim 8, wherein a first border of the first portion of the multi-part dcor and a second border of the second portion of the multi-part dcor face each other and are both curved edges.
11. The method of claim 8, wherein the localization points that are identified include a starting point of the first portion of the multi-part dcor and an ending point of the first portion of the multi-part dcor, wherein the starting point is at a first end of the multi-part dcor and the ending point is at an opposite, second end of the first portion of the multi-part dcor along a linear path.
12. The method of claim 8, wherein the first portion of the multi-part dcor is formed from multiple discontinuous sections, and wherein the identification points that are measured are measured for at least two locations on each of the multiple discontinuous sections of the first portion of the multi-part dcor.
13. A method comprising: measuring identification points of multiple discontinuous sections of a first portion of a multi-part dcor on a surface of an object, the multi-part dcor formed from multiple portions that includes the first portion, the identification points measured after the first portion has been applied to the surface of the object but prior to application of at least a second portion of the multi-part dcor to the surface of the object; identifying localization points to be used for applying at least the second portion of the multi-part dcor to the surface of the object, the localization points identified using information relating to the multi-part dcor and the identification points that are measured; and applying at least the second portion of the multi-part dcor to the surface of the object using the localization points.
14. The method of claim 13, wherein the first and second portions of the multi-part dcor are adjacent to each other on the surface of the object subsequent to applying the second portion of the multi-part dcor.
15. The method of claim 13, wherein a first border of the first portion of the multi-part dcor and a second border of the second portion of the multi-part dcor face each other and are both curved edges.
16. The method of claim 13, wherein the localization points that are identified include a starting point of the first portion of the multi-part dcor and an ending point of the first portion of the multi-part dcor, wherein the starting point is at a first end of the multi-part dcor and the ending point is at an opposite, second end of the first portion of the multi-part dcor along a linear path.
17. The method of claim 13, wherein the identification points are measured for each of the multiple discontinuous sections of the first portion of the multi-part dcor.
Description
(1) The invention will be better understood from reading the following description, given solely by way of nonlimiting example and with reference to the appended drawings, which are schematic depictions, in which:
(2) FIG. 1 shows a first theoretical dcor applied on an object;
(3) FIG. 2 shows the first theoretical dcor and a second theoretical dcor applied in parallel on the object in FIG. 1;
(4) FIG. 3 shows a first practical dcor applied on the object in FIG. 1, having a number of divergences from the first theoretical dcor;
(5) FIG. 4 shows a second practical dcor not in accordance with the invention, applied in parallel to the first practical dcor on the object in FIG. 2;
(6) FIG. 5 shows a second practical dcor in accordance with a first embodiment of the invention, applied in parallel to the first practical dcor on the object in FIG. 2;
(7) FIG. 6 shows a second practical dcor in accordance with a second embodiment of the invention, applied in parallel to the first practical dcor on the object in FIG. 2;
(8) FIG. 7 shows a first theoretical dcor and a second theoretical dcor applied in parallel on an object, having different patterns than the dcors in FIGS. 1 to 6;
(9) FIG. 8 shows a first practical dcor and a second practical dcor intended to correspond to the theoretical dcors in FIG. 7; and
(10) FIGS. 9 to 12 show a second practical dcor in accordance with a third, a fourth, a fifth and a sixth embodiment of the invention, respectively, applied next to the first practical dcor on the object in FIG. 8.
(11) FIGS. 1 to 12 partially and schematically show a three-dimensional object, for example a glass bottle 1, having a cylindrical external surface 2, depicted as a rectangular planar developed surface. The surface 2 has a length L2 defined between two longitudinal ends 2A and 2B along a longitudinal decoration application direction D1. When the surface 2 is not projected, the ends 2A and 2B are coincident. A direction D2 orthogonal to the direction D1 is defined. The direction D2 extends parallel to the central axis of the bottle 1, while the direction D1 is orthoradial to the central axis of the bottle 1.
(12) In the examples in FIGS. 1 to 6, the surface 2 receives theoretical dcors 10 and 10, or practical dcors 20, 30, 40 and/or 50. In each of FIGS. 1 to 6, the existing dcor 10 or 20 and the new dcor 10, 30, 40 or 50 extend in parallel alongside one another on the surface 2 and comprise several discontinuous sections, requiring precise relative positioning. The constituent elements that are analogous to the dcor 10 receive apostrophes for the dcor 10, while they comprise numerical references increased by ten for the dcor 20, by twenty for the dcor 30, by thirty for the dcor 40 and by forty for the dcor 50. The dimensional divergences are exaggerated in FIGS. 3 to 6 compared with FIGS. 1 and 2 in order to make it easier to understand the invention.
(13) In FIG. 1, the surface 2 has a first theoretical dcor 10 comprising three longitudinal sections 11, 12 and 13. The section 11 has a length L11 defined between two points 11a and 11b. The section 12 has a length L12 defined between two points 12a and 12b. The section 13 has a length L13 defined between two points 13a and 13b. The section 11 starts at the end 2A, in other words the point 11a is situated at the end 2A. The sections 11, 12 and 13 are discontinuous. A space of length L15 is defined between the sections 11 and 12, more precisely between the points 11b and 12a. A space of length L16 is defined between the sections 12 and 13, more precisely between the points 12b and 13a. A space of length L17 is defined between the section 13 and the end 102, more precisely between the point 13b and the end 2B. The dcor 10 has a length L10 equal to the sum of the lengths L11, L12, L13, L15 and L16.
(14) In FIG. 2, the surface 2 has a second theoretical dcor 10 applied next to the first theoretical dcor 10. The theoretical dcors 10 and 10 are aligned perfectly along the directions D1 and D2. In particular, the sections 11, 12 and 13 each have the same lengths L11, L12 and L13 as the sections 11, 12 and 13 along the direction D1, while their starting points and ending points are aligned along the direction D2. The dcors 10 and 10 comprise neighboring borders, 18 and 18, respectively, which are rectilinear and substantially parallel in projection in the plane of the developed surface 2. A constant gap e10 is defined along the direction D2 between the dcors 10 and 10, more precisely between the borders 18 and 18. This constant gap e10 is obtained by closed-loop control of a decoration device, for example a hot stamping head, when the practical dcor corresponding to the theoretical dcor 10 is applied to the surface 2 of the bottle 1.
(15) In FIGS. 3 to 6, the surface 2 receives practical decorations 20, 30, 40 and 50. Each practical dcor is imperfect and does not correspond exactly to the theoretical dcor 10 or 10, in particular on account of the dimensional tolerances inherent to each decoration method that is likely to be employed. In addition, the practical dcors are likely to vary from one bottle 1 to another in the same set based on the same theoretical dcors 10 or 10. The dcors 40 and 50 realized by implementing the invention are more precise than the dcor 30, as explained in detail below.
(16) In FIG. 3, the surface 2 receives the first practical dcor 20 that is intended to correspond to the theoretical dcor 10 and comprises three longitudinal sections 21, 22 and 23. The section 21 has a length L21 defined between two points 21a and 21b. The section 22 has a length L22 defined between two points 22a and 22b. The section 23 has a length L23 defined between two points 23a and 23b. A space of length L24 is defined between the end 2A and the section 21, more precisely between the end 2A and the point 22a. A space of length L25 is defined between the sections 21 and 22, more precisely between the points 21b and 22a. A space of length L26 is defined between the sections 22 and 23, more precisely between the points 22b and 23a. A space of length L27 is defined between the section 23 and the end 2B, more precisely between the point 23b and the end 2B. The dcor 20 has a length L20 equal to the sum of the lengths L21, L22, L23, L25 and L26.
(17) The practical dcor 20 is imperfect and does not correspond exactly to the theoretical dcor 10, in particular on account of the dimensional tolerances inherent to each decoration method likely to be employed. In FIG. 3, the section 21 does not start at the end 2A, and so the point 21a is separated from the end 2A by the length L24. Moreover, the length L20 is not equal to the length L10, and so the sections 21, 22 and 23 of the practical dcor are offset with respect to the sections 11, 12 and 13 of the theoretical dcor. The points 21b, 22a, 22b, 23a and 23b do not coincide with the points 11b, 12a, 12b, 13a and 13b, respectively. The lengths L21, L22, L23, L25, L26 and L27 are different than the lengths L11, L12, L13, L15, L16 and L17, respectively. In the example in FIG. 3, the lengths L21, L22 and L25 are less than the lengths L11, L12 and L15, respectively, while the lengths L23, L26 and L27 are greater than the lengths L13, L16 and L17, respectively.
(18) In spite of the slight dimensional divergences between the theoretical dcor 10 and the practical dcor 20, the visual appearance of the surface 2 including the dcor 20 is satisfactory overall.
(19) Secondly, following application of the dcor 20 on the surface 2, a new dcor is applied next to the existing dcor 20.
(20) To this end, the decoration machine comprises a control unit designed to receive and process, on the one hand, information relating to the theoretical dcors 10 and 10 and, on the other hand, information relating to the practical dcor 20 that is stored in a control system. The control system may comprise various types of detection device, for example a photoelectric cell, a matrix camera or preferably a linear camera. The control unit is also designed to control the movement of the bottle 1, more precisely the rotation of the bottle 1 about its central axis, and also the movement of the decoration device, which is for example a hot stamping head comprising a die.
(21) FIG. 4 illustrates a known decoration method, not in accordance with the invention, while FIGS. 5 and 6 illustrate two embodiments of a decoration method in accordance with the invention.
(22) In FIG. 4, the surface 2 including the first dcor 20 receives the second practical dcor 30 realized, on the one hand, on the basis of the information relating to the second theoretical dcor 10, by bringing the lengths L30, L31, L32, L33, L35 and L36 into coincidence with the lengths L10, L11, L12, L13, L15 and L16, respectively, along the direction D1 and, on the other hand, on the basis of the information relating to the first practical dcor 20 which is provided by the control system, by bringing the starting point 31a of the dcor 30 into coincidence with the starting point 21a of the dcor 20 along the direction D1, with the gap e10 formed between the borders 28 and 38 of the dcors 20 and 30 along a direction D2. In other words, the coordinates of the starting point 31a of the section 31 coincide with the coordinates of the starting point 21a of the section 21 along the direction D1. By virtue of the control system, the length L34 is equal to the length L24. By contrast, the length L30 corresponds to the theoretical length L10 but not to the practical length L20. The points 31b, 32a, 32b, 33a and 33b do not coincide with the points 21b, 22a, 22b, 23a and 23b, respectively, along the direction D1. The lengths L31, L32, L33, L35 and L36 are equal to the lengths L11, L12, L13, L15 and L16, respectively, but are different than the lengths L21, L22, L23, L25 and L26, respectively.
(23) Under these conditions, the dcor 30 is not positioned correctly with respect to the dcor 20 along a direction D1. The visual appearance of the surface 2 including the dcors 20 and 30 is not satisfactory.
(24) In FIG. 5, the surface 2 including the first dcor 20 receives the second practical dcor 40 realized, on the one hand, on the basis of the information relating to the second theoretical dcor 10, in particular the lengths L10, L11, L12, L13, L15 and L16 and, on the other hand, on the basis of the information relating to the first practical dcor 20 which is provided by the control system, by bringing the starting point 41a of the dcor 14 into coincidence with the starting point 21a of the dcor 20 and the ending point 43b of the dcor 14 into coincidence with the ending point 23b of the dcor 20 along the direction D1, with the gap e10 formed between the borders 28 and 48 of the dcors 20 and 40 along the direction D2. In other words, the coordinates of the starting point 41a of the section 41 coincide with the coordinates of the starting point 21a of the section 21 and the coordinates of the ending point 43b of the section 43 coincide with the coordinates of the ending point 23b of the section 23 along the direction D1. By virtue of the control system, the length L40 is equal to the length L20, the length L44 is equal to the length L24 and the length L47 is equal to the length L27. By contrast, the points 41b, 42a, 42b and 43a do not coincide with the points 21b, 22a, 22b and 23a, respectively, along the direction D1. The lengths L41, L42, L43, L45 and L46 are equal to the lengths L11, L12, L13, L15 and L16, respectively, multiplied by a coefficient L40/L10, but are different than the lengths L21, L22, L23, L25 and L26, respectively.
(25) Thus, even if the dcor 40 is not positioned perfectly on the surface 2 with respect to the dcor 20, the result is all the same more satisfactory than in the case of the dcor 30.
(26) In FIG. 6, the surface 2 including the first dcor 20 receives the second practical dcor 50 realized, on the one hand, on the basis of the information relating to the second theoretical dcor 10, in particular the lengths L10, L11, L12, L13, L15 and L16 and, on the other hand, on the basis of the information relating to the first practical dcor 20 which is provided by the control system, by bringing the starting point 51c of the dcor 50 into coincidence with the starting point 21a of the dcor 20, the starting point 52a of the section 52 into coincidence with the starting point 22a of the section 22, the starting point 53a of the section 53 into coincidence with the starting point 23a of the section 23 and the ending point 53b of the dcor 50 into coincidence with the ending point 23b of the dcor 20 along the direction D1, with the gap e10 formed between the borders 28 and 58 of the dcors 20 and 50 along the direction D2. In other words, the coordinates of each starting point 51a, 52a and 53a of the sections 51, 52 and 53 coincide with the coordinates of each starting point 21a, 22a and 23a, respectively, of the sections 21, 22 and 23, and the coordinates of the ending point 53b of the section 53 coincide with the coordinates of the ending point 23b of the section 23 along the direction D1. By virtue of the control system, the length L50 is equal to the length L20, the length L54 is equal to the length L24 and the length L57 is equal to the length L27. By contrast, the points 51b and 52b do not coincide with the points 21b and 22b, respectively. The lengths L51, L52 and L53 are equal to the lengths L11, L12 and L13, respectively, multiplied by a coefficient L50/L10, but are different than the lengths L21, L22 and L23, respectively.
(27) Thus, even if the dcor 50 is not positioned perfectly on the surface 2 with respect to the dcor 20, the result is all the same more satisfactory than in the case of the dcor 40.
(28) In the examples in FIGS. 7 to 12, the surface 2 receives theoretical dcors 110 and 110, or practical dcors 120, 130, 140, 150, 160 and/or 170. In each of FIGS. 7 to 12, the existing dcor 110 or 120 and the new dcor 110, 130, 140, 150, 160 or 170 comprise borders with a wavy shape, requiring precise relative positioning. The constituent elements that are analogous to the dcor 110 receive apostrophes for the dcor 110, while they comprise numerical references increased by ten for the dcor 120, by twenty for the dcor 130, by thirty for the dcor 140, by forty for the dcor 150, by fifty for the dcor 160 and by sixty for the dcor 170. The dimensional divergences are exaggerated in FIGS. 8 to 12 compared with FIG. 7 in order to make it easier to understand the invention.
(29) In FIG. 7, the surface 2 includes a first theoretical dcor 110 and a second theoretical dcor 110 applied next to the first theoretical dcor 110, each comprising a single longitudinal section and an undulating border 118 and 118, respectively. The dcor 110 has a length L110 defined between two points 110a and 110b along the direction D1. The dcor 110 has a length L110 defined between two points 110a and 110b along the direction D1. The points 110a and 110b are situated on the border 118, while the points 110a and 110b are situated on the border 118. The dcors 110 and 110 start at the end 2A, in other words the points 110a and 110a are situated at the end 2A. The theoretical dcors 110 and 110 are perfectly aligned along the directions D1 and D2. A constant gap e110 is defined along the direction D2 between the dcors 110 and 110, more precisely between the borders 118 and 118. The wavy shape of the practical dcors corresponding to the theoretical dcors 110 and 110 may be obtained by virtue of the configuration of the decoration device, which is for example a stamping head comprising a die. The first practical dcor is applied by a first die, and then the second practical dcor is applied by a second die.
(30) In FIGS. 8 to 12, the surface 2 receives practical decorations 120, 130, 140, 150, 160 and 170. Each practical dcor is imperfect and does not correspond exactly to the theoretical dcor 110 or 110, in particular on account of the dimensional tolerances inherent to each decoration method that is likely to be employed. In addition, the practical dcors are likely to vary from one bottle 1 to another in the same set based on the same theoretical dcors 110 or 110. Following application of the dcor 120 on the surface 10, a new dcor 130, 140, 150, 160 or 170 is applied next to the existing dcor 120. The identification points are measured along the border 128 of the decoration 120, as explained in detail below. The dcors 140, 150, 160 and 170 realized by implementing the invention are more precise than the dcor 130.
(31) In FIG. 8, the surface 2 receives the first practical dcor 120 and the second practical dcor 130 that are intended to correspond to the theoretical dcors 110 and 110, respectively. The practical dcors 120 and 130 are imperfect and do not correspond exactly to the theoretical dcors 110 and 110. The starting points 120a and 130a are positioned properly at the end 2A, but the ending points 120b and 130b are separated from the points 110b and 110b. In the example shown, the point 120b is closer to the end 2B than the point 110b, while the point 130b is further away from the end 2B than the point 110b. The gap e between the borders 128 and 138 is variable and does not correspond to the gap e110. An overlapping zone Z8 of the dcors 120 and 130 is apparent near the end 2B. The visual appearance of the surface 2 including the dcors 120 and 130 is not satisfactory.
(32) In FIG. 9, the surface 2 including the first dcor 120 receives the second practical dcor 140 realized, on the one hand, on the basis of the information relating to the second theoretical dcor 110 and, on the other hand, on the basis of the information relating to the first practical dcor 110 which is provided by the system control system, by positioning the starting point 140a of the dcor 140 in a manner corresponding to the starting point 120a of the dcor 120 and by positioning an intermediate point 140c situated on the border 148 of the dcor 140 in a manner corresponding to an intermediate point 120c situated on the border 128 of the dcor 120, along the direction D1. At the points 140a and 140c, the gap e between the borders 128 and 148 is equal to the reference gap e110. Between the points 140a and 140c, and between the points 140c and 140b, this gap e is likely to vary. In this case, the point 140b is offset towards the end 2B compared with the point 120b in the zone Z8, but this offset is less significant than for the points 120b and 130b. Thus, even if the dcor 140 is not positioned perfectly on the surface 2 with respect to the dcor 120, the result is all the same more satisfactory than in the case of the dcor 130.
(33) In FIG. 10, the surface 2 including the first dcor 120 receives the second practical dcor 150, by the starting point 150a of the dcor 150 being positioned in a manner corresponding to the starting point 120a of the dcor 120 and by two intermediate points 150d and 150c situated on the border 158 of the dcor 150 being positioned in a manner corresponding to two intermediate points 120d and 120c situated on the border 128 of the dcor 120, along the direction D1. At the points 150a, 150d and 150c, the gap e between the borders 128 and 158 is equal to the reference gap e110. Between the points 150a and 150d, between the points 150d and 150e, and between the points 150e and 150b, this gap e is likely to vary. In this case, the point 150b is offset away from the end 2B with respect to the point 120b in the zone Z8, but this offset is less significant than for the points 120b and 130b. Thus, even if the dcor 150 is not positioned perfectly on the surface 2 with respect to the dcor 120, the result is all the same more satisfactory than in the case of the dcor 130.
(34) In FIG. 11, the surface 2 including the first dcor 120 receives the second practical dcor 160, by the starting point 160a of the dcor 160 being positioned in a manner corresponding to the starting point 120a of the dcor 120 and by the ending point 160b of the dcor 160 being positioned in a manner corresponding to the ending point 120b of the dcor 120, along the direction D1. At the points 160a and 160b, the gap e between the borders 128 and 168 is equal to the reference gap e110. Between the points 160a and 160b, this gap e is likely to vary. An overlapping zone Z8 of the dcors 120 and 160 is apparent between the points 160a and 160b, but this defect is less significant than for the dcors 120 and 130. Thus, even if the dcor 160 is not positioned perfectly on the surface 2 with respect to the dcor 120, the result is all the same more satisfactory than in the case of the dcor 130.
(35) In FIG. 12, the surface 2 including the first dcor 120 receives the second practical dcor 170, by the starting point 170a of the dcor 170 being positioned in a manner corresponding to the starting point 120a of the dcor 120, by the ending point 170b of the dcor 170 being positioned in a manner corresponding to the ending point 120b of the dcor 120, and by eight intermediate points 170f and so on situated on the border 178 of the dcor 170 being positioned in a manner corresponding to eight intermediate points 120f and so on situated on the border 128 of the dcor 120, along the direction D1. At the points 170a, 170b, 170f and so on, the gap e between the borders 128 and 178 is equal to the reference gap e110. On account of the large number of intermediate identification points 120f and so on, the gap e between the borders 128 and 178 varies little over the entire surface 102. Thus, the correspondence between the dcors 120 and 170 is improved compared with the dcors 130, 140, 150 and 160.
(36) In practice, the decoration method according to the invention comprises different successive steps a), b) and c) for applying the new dcor 40, 50, 140, 150, 160 or 170 on the surface 2 including the existing dcor 20 or 120. The method comprises a step a) for measuring at least two identification points of the existing dcor 20 or 120 applied on the surface 2 of the bottle 1. Preferably, the identification points comprise at least one starting point 21a or 120a and/or one ending point 23b or 120b of the existing dcor 20 or 120. In particular, the identification points may comprise the starting point and the ending point of the existing dcor 20 or 120. The identification points comprise the points 21a and 23b in the example of FIG. 5, the points 21a, 22a and 23a in the example of FIG. 6, the points 120a and 120c in the example of FIG. 9, the points 120a, 120d and 120e in the example of FIG. 10, the points 120a and 120b in the example of FIG. 11 and the points 120a, 120b 120f and so on in the example of FIG. 12. The measuring step a) is realized by employing the control system with which the decoration machine is equipped.
(37) Next, the method comprises a step b) for dynamic correction of localization points of the new dcor 40; 50, 140; 150, 160 or 170 to be applied on the surface 2 of the bottle 1, using the identification points measured during the measuring step a). These localization points comprise the points 41a, 41b, 42a, 42b, 43a and 43b in the example of FIG. 5, the points 51a, 51b, 52a, 52b, 53a and 53b in the example of FIG. 6, the points 140a, 140b and 140c in the example of FIG. 9, the points 150a, 150b, 150d and 150e in the example of FIG. 10, the points 160a and 160b in the example of FIG. 11 and the points 170a, 170b, 170f and so on in the example of FIG. 12. Preferably, the dynamic correction step b) uses, on the one hand, information relating to the theoretical dcor 10 or 110 and, on the other hand, information relating to the identification points measured during the measuring step a).
(38) Finally, the method comprises a step c) for application of the new dcor 40, 50, 140, 150, 160 or 170 on the surface 2 of the bottle 1, by using the localization points determined in the dynamic correction step b). Depending on the information processed by the control unit during the dynamic correction step b), the application step c) comprises a variation in the movement of the bottle 1, more precisely a variation in the speed of rotation of this bottle 1 about its central axis, that is to say an acceleration or a deceleration. Thus, the dynamic correction makes it possible to bring the new dcor 40, 50, 140, 150, 160 or 170 better into correspondence with the existing dcor 20 or 120.
(39) In the examples of FIGS. 5 and 6, the identification points of the existing dcor 20 are measured along the direction D1 only. Similarly, the localization points of each new dcor 40 and 50 are determined only along the direction D1. In other words, each identification point or localization point is identified by a single coordinate in a linear reference frame defined along the direction D1.
(40) In the examples of FIGS. 9 to 12, the identification points of the existing dcor 120 are measured along the wavy border 120 along the two directions D1 and D2. Similarly, the localization points of each new dcor 140, 150, 160 and 170 are determined along the direction D1 and D2. In other words, each identification point or localization point is identified by two coordinates in an orthogonal reference frame defined along the directions D1 and D2.
(41) In the examples of FIGS. 1 to 12, the decoration does not include an overlap between the existing dcor and the new dcor. The gap e10 defined along the direction D2 between the dcors 20 and 50 or 60 is kept substantially constant by closed-loop control of the decoration device controlled by the control unit. The gap e defined along the direction D2 between the dcors 120 and 140, 150, 160 or 170 is also as close as possible to the reference gap e110, ideally equal to the reference gap e110.
(42) According to the invention, the control system comprises a detection device designed to measure at least two identification points of the existing dcor 20 or 120, so as to realize dynamic correction of the localization points of the new dcor 40, 50, 140, 150, 160 or 171 to be applied on the surface 2 of the bottle 1, by using the identification points. Preferably, the detection device is a linear camera. The dynamic correction is realized by the control unit with which the decoration machine is equipped.
(43) Furthermore, the decoration method, the detection system and/or the decoration machine may be different than the examples described above without departing from the scope of the invention.
(44) In a variant that is not shown, the object 1 may be other than a bottle. For its part, the surface 2 to be decorated may have a shape other than a cylinder. Furthermore, the developed form of this surface 2 projected in a plane may be different than a rectangular surface. Depending on the shape of the object 1 and of the surface 2, the application step c) may comprise a variation in the movement of the object 1 and/or a variation in the movement of the decoration device belonging to the decoration machine.
(45) According to another variant that is not shown, other dcors then those in FIGS. 1 to 12 may be applied to the surface 2 of the bottle 1. For example, the dcors may comprise several sections with wavy borders. According to another example, the dcors may comprise a single section with mutually parallel borders. According to another example, the dcors may comprise any type of neighboring borders that are non-rectilinear and/or non-parallel. According to another example, one of the dcors or the dcors may comprise graduations distributed along the surface 2.
(46) According to one alternative, the decoration may include a partial or complete overlap between the existing dcor and the new dcor.
(47) Moreover, the technical features of the various embodiments and variants described above may all, or just some, be combined with one another. Thus, the decoration method and the detection system can be adapted in terms of cost, ergonomics and performance.
