Multi-dimensional imaging and color-changing three-dimensional printing method and vamp and shoe thereof

Abstract

The invention discloses a multi-dimensional imaging and color-changing three-dimensional printing method and a vamp and a shoe thereof. A plurality of patterns needing to be switched are decomposed respectively, and the three-dimensional structure type and the arrangement mode of a linear array or a dot matrix are selected according to the number of the patterns; digital printing equipment is adopted to accurately control the number of times of spraying and printing coatings of lines with different heights on different areas of a textile fabric by a spray head, required three-dimensional structures are formed and combined to form a linear array or a dot matrix, and finally, the spray head is controlled to accurately spray and print decomposed patterns on each display surface of each three-dimensional structure in a one-to-one correspondence manner. The line segments or planes of the three-dimensional structure are mutually shielded by converting the visual angle, so that different colors or patterns displayed in different directions of a linear array or a dot matrix can be observed, multi-dimensional imaging and color changing are realized on the textile fabric, the process is simple, the imaging is clear, and the process aesthetic feeling is improved.

Description

Technical Field

[0001] The present invention relates to the field of shoe upper printing, and particularly to a multi-dimensional imaging and color-changing three-dimensional printing method, its shoe upper, and shoes. Background Art

[0002] With the change of the viewing angle, the color-changing shoe upper has a technological aesthetic due to its unique visual effect. In the prior art, light-sensitive materials are usually used to make the fabric, such as coating with color-changing powder, covering a photosensitizer on the surface layer, etc. Such manufacturing processes have defects such as high cost and poor durability.

[0003] In order to reduce costs and improve durability, a woven fabric with a color-changing effect disclosed in a patent with publication number CN218026566U combines the design of yarn and weaving organization, including a weft raised strip, a first weft groove strip arranged on one side surface of the weft raised strip, and a second weft groove strip arranged on the other side surface of the weft raised strip. The height of the weft raised strip is higher than that of the first weft groove strip and the second weft groove strip. The weaving yarns of the second weft groove strip are different from those of the first weft groove strip or the weaving pattern of the second weft groove strip is different from that of the first weft groove strip, and a woven fabric with a color-changing effect at different angles is integrally woven. The visual effect is rich, the process is simple, the cost is controllable, and it is conducive to popularization and production. However, using a woven substrate can only achieve a linear color-changing effect and cannot achieve the effect of pattern change at different viewing angles.

[0004] There is also a grating painting in the prior art that can achieve pattern change with the viewing angle. Through moving the grating plate, the viewer's visual thinking will automatically supplement the blocked part, eliminating the covering obstacle of the grating plate, enabling us to have a complete image recognition, thus realizing the pattern change. For example, a highly stable lenticular grating painting for paper printing disclosed in a patent with publication number CN110481235A uses double copper paper as the printing layer. After being placed in an environment with a temperature of 20 - 25°C and a humidity of 45% - 50% until stable, the grating texture is printed, and then it is continuously placed in an environment with a temperature of 20 - 25°C and a humidity of 45% - 50% until stable and kept warm and humid, and then cold-mounted with a lenticular grating plate. The produced lenticular grating painting can avoid the influence of temperature and humidity on the paper and the influence of temperature on the lenticular grating plate, thus avoiding phenomena such as "light waves" and "twisting" that occur in lenticular grating of ordinary paper materials; and its durability is strong, and it can maintain a stable overall structure and visual effect, but this technology cannot be realized on the fabric. Summary of the Invention

[0005] To this end, it is necessary to provide a multi-dimensional imaging and color-changing three-dimensional printing method and its shoe upper, which can achieve color illusion / phase illusion by using linear / point-shaped three-dimensional structures on textile fabrics, and can observe multiple colors or patterns from different perspectives on one shoe upper, improving the aesthetic feeling and making the shoe upper decoration more abundant.

[0006] To achieve the above object, the present invention provides a multi-dimensional imaging and color-changing three-dimensional printing method, and the method includes the steps of:

[0007] Determine the three-dimensional structure type based on the number of patterns;

[0008] Decompose multiple patterns respectively with the display surface of the three-dimensional structure as a unit;

[0009] Receive a textile fabric at a printing device;

[0010] Spray a coating on the textile fabric to form multiple three-dimensional structures, forming a three-dimensional dot matrix;

[0011] Based on the patterns corresponding to the multi-dimensional angles in the three-dimensional dot matrix, spray-print the decomposed multiple patterns one by one on the corresponding display surfaces.

[0012] Further, after receiving multiple patterns at the printing device, perform a three-dimensional structure type selection: when the number of patterns is 2, select the three-dimensional structure as a stripe with a high middle and low sides; or

[0013] When the number of patterns is 3-5, select the three-dimensional structure as a point-shaped three-dimensional with a high middle and low around.

[0014] Further, after selecting the three-dimensional structure as a point-shaped three-dimensional with a high middle and low around, configure the shape of the point-shaped three-dimensional according to the number of patterns:

[0015] When the number of patterns is 3, configure the point-shaped three-dimensional as a hexagonal pyramid or a triangular pyramid; or

[0016] When the number of patterns is 4, configure the point-shaped three-dimensional as a quadrangular pyramid or a four-pointed star pyramid; or

[0017] When the number of patterns is 5, configure the point-shaped three-dimensional as a five-pointed star pyramid.

[0018] Further, decomposing multiple patterns respectively with the display surface of the three-dimensional structure as a unit includes the following steps:

[0019] Create a spot color channel, set the highest three-dimensional height of the three-dimensional structure, define the height of each point of the three-dimensional structure as K, and the K value at the highest point of the three-dimensional structure is the highest;

[0020] Set the K value of each point of the three-dimensional structure according to the number of patterns. When the number of patterns is 2, the K value is the highest at the midline of the three-dimensional structure and gradually decreases to 0 towards both sides. When the number of patterns is 3 - 5, the K value is the highest at the vertex of the three-dimensional structure and gradually decreases to 0 towards the surroundings.

[0021] Arrange the three-dimensional structure in the spot color channel.

[0022] In the RGB channel, compactly arrange all the display surfaces corresponding to one angle of the three-dimensional structure, and restore the scattered arrangement of the multiple display surfaces within the overlapping area with the pattern.

[0023] Repeat the above step until all the patterns are decomposed.

[0024] Delete the area without patterns in the spot color channel to form a spot color channel print and an RGB channel print.

[0025] Upload the spot color channel print and the pattern print to the printing device.

[0026] Further, after completing the selection of the three-dimensional structure type, select the arrangement method of the three-dimensional dot matrix according to the three-dimensional structure type. The arrangement method of staggered density affects the continuity of color / the continuity and integrity of the pattern. The more compact, the better the continuity of color / the continuity and integrity of the pattern.

[0027] Further, after spraying and printing the decomposed multiple patterns one by one on the corresponding display surfaces, perform drying and reinforcement.

[0028] Further, when spraying a coating on a textile fabric to form multiple three-dimensional structures, make the multiple display surfaces of the three-dimensional structure intersect at a highest point.

[0029] The present invention also provides a shoe upper, and the shoe upper is executed with the steps of the method described in any one of the above technical solutions.

[0030] The present invention also provides a shoe, and the shoe is made of a shoe upper described in the above technical solution.

[0031] Different from the prior art, the above technical solution decomposes multiple patterns to be switched respectively, selects the three-dimensional structure type and arrangement mode of the linear array or dot matrix according to the number of patterns, uses a digital printing device to precisely control the number of printing and coating layers of the nozzle spraying different-height lines in different areas of the textile fabric, forms the required three-dimensional structure and combines it into a linear array or dot matrix, and finally controls the nozzle to precisely print the decomposed patterns one by one on each display surface of each three-dimensional structure. By changing the viewing angle, the line segments or planes of the three-dimensional structure block each other, so that different colors or patterns displayed in different orientations of the linear array or dot matrix can be observed, realizing multi-dimensional imaging and color change on the textile fabric. The process is streamlined, the imaging is clear, and the process aesthetic feeling is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of the steps of a method for three-dimensional printing with multi-dimensional imaging and color change according to the present invention;

[0033] Figure 2 Schematic diagram of the steps of a specific embodiment for realizing color illusion of a method for three-dimensional printing with multi-dimensional imaging and color change according to the present invention;

[0034] Figure 3 Schematic diagram of the steps of a specific embodiment for realizing illusion of a method for three-dimensional printing with multi-dimensional imaging and color change according to the present invention;

[0035] Figure 4 Stereoscopic diagram of the arrangement of a semi-cylindrical three-dimensional structure according to the present invention and two viewing angles;

[0036] Figure 5 Top view schematic diagram of a hexagonal pyramid three-dimensional structure according to the present invention;

[0037] Figure 6 Stereoscopic diagram of the horizontal and vertical arrangement of a hexagonal pyramid three-dimensional structure according to the present invention;

[0038] Figure 7 Stereoscopic diagram of three viewing angles of the staggered arrangement of a hexagonal pyramid three-dimensional structure according to the present invention;

[0039] Figure 8 Top view schematic diagram of the staggered arrangement of a hexagonal pyramid three-dimensional structure according to the present invention;

[0040] Figure 9 Stereoscopic diagram of a viewing angle of the staggered arrangement of a quadrangular pyramid three-dimensional structure according to the present invention;

[0041] Figure 10 Top view schematic diagram of the staggered arrangement of a quadrangular pyramid three-dimensional structure according to the present invention;

[0042] Figure 11This is a three-dimensional schematic diagram of an observation perspective of the insertion arrangement of the four-corner star cones in the three-dimensional structure of the present invention;

[0043] Figure 12 This is a top view schematic diagram of the insertion arrangement of the four-corner star cones in the three-dimensional structure of the present invention;

[0044] Figure 13 This is a schematic diagram of the decomposition imaging of a pattern when the three-dimensional structure of the present invention is a four-corner star cone;

[0045] Figure 14 This is a three-dimensional schematic diagram of an observation perspective of the three-dimensional structure of the present invention being a five-pointed star cone;

[0046] Figure 15 This is a top view schematic diagram of the three-dimensional structure of the present invention being a five-pointed star cone; Detailed implementation manners

[0047] To describe in detail the technical content, structural features, achieved objectives and effects of the technical solution, the following is a detailed description in conjunction with specific embodiments and with reference to the accompanying drawings.

[0048] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The term "embodiment" appearing in various positions in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0049] Unless otherwise defined, the meanings of the technical terms used herein are the same as those commonly understood by those skilled in the technical field to which the present application belongs; the use of the relevant terms herein is only for describing specific embodiments and is not intended to limit the present application.

[0050] In the description of the present application, the phrase "and / or" is an expression used to describe the logical relationship between objects, indicating that there can be three relationships, for example, A and / or B, which means: there is A, there is B, and there is both A and B at the same time. In addition, the character " / " herein generally represents an "or" logical relationship between the associated objects before and after.

[0051] In the present application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, primary-secondary or order relationship between these entities or operations.

[0052] Without further limitation, in this application, the terms "including", "comprising", "having" or other similar expressions used in a statement are intended to cover non-exclusive inclusion. These expressions do not exclude the possibility that there may be additional elements in a process, method or product that includes the said elements. Thus, a process, method or product that includes a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such a process, method or product.

[0053] Similar to the understanding in the "Examination Guidelines", in this application, expressions such as "greater than", "less than", "exceeding" are understood not to include the recited number; expressions such as "above", "below", "within" are understood to include the recited number. In addition, in the description of the embodiments of this application, the meaning of "a plurality of" is two or more (including two). Similar expressions related to "many", such as "multiple groups", "multiple times", etc., are understood in this way, unless otherwise specifically defined.

[0054] In the description of the embodiments of this application, the spatially related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiment or the accompanying drawings. It is only for the convenience of describing the specific embodiments of this application or for the reader's understanding, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation on the embodiments of this application.

[0055] Unless otherwise clearly specified or limited, in the description of the embodiments of this application, the terms "installed", "connected", "joined", "fixed", "set", etc. should be understood in a broad sense. For example, the said "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art to which this application pertains, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

[0056] The present invention provides a multi-dimensional imaging and color-changing three-dimensional printing method, and the method includes the steps:

[0057] Generally, the number of colors or patterns for realizing multi-dimensional imaging and color change is 2 - 5, and different numbers of patterns correspond to different three-dimensional structural shapes, which will be elaborated in detail later.

[0058] When determining the three-dimensional structure type based on the number of patterns, select the three-dimensional structure type:

[0059] When the number of patterns is 2, select the three-dimensional structure as stripes that are high in the middle and low on both sides; or

[0060] Specifically, when the number of patterns is 2, as Figure 4 shown, select the three-dimensional structure as a semi-cylinder. The flat part of the semi-cylinder is attached to the textile to form equidistant stripes. At both sides of the highest line or near the highest line of the raised part of the equidistant stripes are different colors or local patterns. Two different colors can be observed from two different perspectives. The same applies to patterns.

[0061] When the number of patterns is 3 - 5, select the three-dimensional structure as a dot-shaped solid that is high in the middle and low around.

[0062] After selecting the three-dimensional structure as a dot-shaped solid that is high in the middle and low around, configure the shape of the dot-shaped solid according to the number of patterns:

[0063] When the number of patterns is 3, configure the dot-shaped solid as a hexagonal pyramid or a triangular pyramid; or

[0064] When the number of patterns is 4, configure the dot-shaped solid as a square pyramid or a four-pointed star pyramid; or

[0065] When the number of patterns is 5, configure the dot-shaped solid as a five-pointed star pyramid.

[0066] Specifically, when the number of patterns is 3, as Figures 5 - 8As shown, the three-dimensional structure is selected as a triangular pyramid or a hexagonal pyramid. The bottom surface of the triangular pyramid is an equilateral triangle. When the triangular pyramids are arranged, they can be arranged corner to corner according to the bottom surface. The bottom surface of the hexagonal pyramid is a regular hexagon. When the hexagonal pyramids are arranged, they can be arranged side to side and corner to corner according to the bottom surface. Three display surfaces are provided on the triangular pyramid or the hexagonal pyramid. The display surface is formed by combining two adjacent inclined surfaces of the hexagonal pyramid. The three display surfaces respectively correspond to color blocks of three different patterns and / or colors. The vertex of the hexagonal pyramid is the common intersection point of the three display surfaces, and the height decreases gradually from the intersection point to the surrounding. The intersection line between two display surfaces is higher than the two side display surfaces, and the intersection line between the two inclined surfaces within one display surface is higher than the two side inclined surfaces. Multiple hexagonal pyramids are arranged in an array, and all the display surfaces for displaying the same pattern are in the same orientation. When tilting and looking down at multiple hexagonal pyramids facing the same orientation, the display surface in the front will block all or most of the two side display surfaces, so that the observer can only observe the color or pattern shown by the three-dimensional dot matrix at the current angle. When it is necessary to show the color-changing effect of three colors, such as red, green, and yellow, the surfaces of the three display surfaces on the hexagonal pyramid, each composed of two adjacent inclined surfaces as a group, can be respectively configured as red, green, and yellow; when it is necessary to show the color-changing effect of three different patterns, the pattern is decomposed according to the position, area, and vertex height of the display surfaces of multiple three-dimensional structures. The decomposed pattern is split into multiple color blocks that are similar to or the same as the number of three-dimensional structures in the display area, and then the multiple color blocks are respectively corresponding to the display surfaces of multiple three-dimensional structures, so that the display surfaces facing the same orientation on multiple hexagonal pyramids can jointly form a complete pattern. Similarly, by respectively configuring the color blocks of all the display surfaces in three orientations, the three display surfaces on multiple hexagonal pyramids can be respectively combined to display three patterns. In this embodiment, the arrangement method of the hexagonal pyramids can be relatively dense and random distribution. Random does not mean that the orientation of the display surfaces of the three-dimensional structures is random, but the surrounding spacing and arrangement method between the three-dimensional structures, etc. still need to ensure that the orientations of the display surfaces for displaying one color or one pattern on multiple hexagonal pyramids are the same. Since the surface area of the hexagonal pyramid is much smaller than the total area of the color-changing area, when the hexagonal pyramids are dense enough, even random distribution can achieve the color-changing effect, that is, by making the three display surfaces of multiple three-dimensional structures face three different directions uniformly, the observer can also observe three different patterns when tilting and looking down at three different angles, achieving a three-dimensional color-changing effect. Of course, the hexagonal pyramids can also be arranged in an array, such as in a horizontal and vertical array arrangement. In this distribution method, taking a certain observation angle as an example, in the observer's perspective, the display surfaces of the three-dimensional structures in the front and back will interfere with each other, that is, the top of the display surface of the three-dimensional structure in the front row will block the bottom of the display surface of the three-dimensional structure in the back row. In addition, there is a gap between two columns of three-dimensional structures, and the color of the fabric substrate itself will be shown at the gap, which will also cause color interference to the color or pattern shown by the combination of the display surfaces of the three-dimensional structures at this angle.Therefore, in order to enhance the display effect of the main color or pattern and reduce interference, in some embodiments, a plurality of three-dimensional structures are arranged in a staggered manner. For each side of the bottom surface of each three-dimensional structure, there is a side of the bottom surface of another three-dimensional structure parallel to it. The angle bisector of each corner of the bottom surface of each three-dimensional structure intersects the angle bisector of a certain corner of the bottom surface of two adjacent three-dimensional structures at a point. Further, three three-dimensional structures form a lattice unit, and the projection of the lattice unit perpendicular to the shoe upper is rotationally symmetric with a rotation angle of 120°. The lattice units are arranged in a cyclic pattern. Each three-dimensional structure can form a lattice unit with two adjacent three-dimensional structures, that is, the three-dimensional lattice is formed by the cyclic arrangement of multiple lattice units. Through this distribution method, the interference of the three-dimensional structures on each other and the interference of the substrate on the three-dimensional structures can be further reduced, so that the visible angle range of the three colors or patterns is larger, optimizing the display effect;

[0067] When the number of the patterns is 4, as Figures 9 - 13, select the three-dimensional structure as a square pyramid or a four-corner star pyramid. In this embodiment, the bottom surface of the three-dimensional structure includes four bottom vertices. A square is formed between the four bottom vertices. Four display surfaces are formed between the four bottom vertices and the vertex of the three-dimensional structure. The four display surfaces respectively correspond to color blocks of four different patterns and / or colors. All the display surfaces for displaying the same pattern on multiple three-dimensional structures are in the same orientation. When tilting and looking down at multiple three-dimensional structures with the same orientation, the display surface in the front will block all or most of the display surfaces on both sides and at the back, so that the observer can only observe the color or pattern displayed by the three-dimensional dot matrix at the current angle. Specifically, the three-dimensional structure is a square pyramid with a square bottom surface. The square bottom surface and the vertex of the three-dimensional structure form a four-sided three-dimensional structure. Then the four inclined surfaces of the three-dimensional structure are the four display surfaces. When arranging the three-dimensional structures, they can be arranged side by side or corner to corner according to the bottom surface. The vertex of the three-dimensional structure is the common intersection point of the four display surfaces. The height decreases from the intersection point to the surrounding. The height of the intersection line between two adjacent display surfaces is higher than that of the two side display surfaces. Multiple three-dimensional structures can be arranged in an array or randomly. When it is necessary to show the magic color effect of four-color transformation, such as red, green, yellow, and blue, the surfaces of three display surfaces grouped by two adjacent inclined surfaces on the three-dimensional structure can be respectively configured as red, green, blue, and yellow; when it is necessary to show the magic color effect of four different patterns, the pattern is decomposed according to the position, area, and vertex height of the display surfaces of multiple three-dimensional structures. The decomposed pattern is split into multiple color blocks similar to or the same as the number of three-dimensional structures in the display area. Then, the multiple color blocks are respectively corresponded to the display surfaces of multiple three-dimensional structures, so that the display surfaces with the same orientation on multiple three-dimensional structures can be combined to form a complete pattern. Similarly, by respectively configuring the color blocks of all the display surfaces in the four orientations, it is possible to realize that the four display surfaces on multiple three-dimensional structures are respectively combined to display four patterns. When looking down at a certain display surface of a square pyramid at a certain angle, a part of the two adjacent display surfaces is still visible, because it will cause visual interference to the color or pattern at this viewing angle, and to a certain extent, it affects the imaging effect. In order to reduce the imaging interference of both sides on a certain viewing angle, in some embodiments, on the basis of the square pyramid, the four sides of the square bottom surface are concave to form a four-corner star shape, that is, the bottom surface of the six-sided pyramid is a four-corner star shape. The bottom surface of the four-corner star shape and the vertex of the three-dimensional structure form 8 inclined surfaces. The two concave inclined surfaces are combined to form a display surface, that is, the two adjacent surfaces of the concave edge are combined to form a display surface. By changing the square pyramid to a four-corner star pyramid, the interference of the two sides of the display surface on its viewing angle is reduced, and the imaging effect is optimized.In this embodiment, multiple three-dimensional structures can be randomly distributed relatively densely. Although a iridescent effect can be achieved, there may be interference. For example, in a horizontal and vertical array arrangement, in this distribution method, taking a certain viewing angle as an example, in the perspective of the observer, the display surfaces of the successive three-dimensional structures will interfere with each other. That is, the top of the display surface of the three-dimensional structure in the front row will block the bottom of the display surface of the three-dimensional structure in the back row. In addition, there are gaps between two columns of three-dimensional structures, and the color of the fabric substrate itself will be displayed at the gaps, which will also cause color interference to the color or pattern displayed by the combination of the display surfaces of the three-dimensional structures at this angle. Therefore, in order to enhance the display effect of the main color or pattern and reduce interference, in some embodiments, four three-dimensional structures are combined to form a dot matrix unit, and the four three-dimensional structures in the dot matrix unit are arranged in a staggered manner to enclose a square. There is a side between any two adjacent three-dimensional structures that are parallel to each other and have a gap. Specifically, each side of the bottom surface of each three-dimensional structure has a side of the bottom surface of another three-dimensional structure that is parallel to it and has a gap. And when the bottom surface of the three-dimensional structure is a square, the two parallel sides are staggered by half of the side length. When the bottom surface of the three-dimensional structure is a four-pointed star, only one side on the same side of each angle has a side of another angle that is parallel to it. Thus, multiple dot matrix units can be arranged in a cycle, and the projection of the dot matrix unit perpendicular to the shoe upper is rotationally symmetric, with a rotation angle of 90°. In the three-dimensional dot matrix formed in this way, each three-dimensional structure can form four different dot matrix units with the surrounding three-dimensional structures at one of the corners of the dot matrix unit, that is, the three-dimensional dot matrix is formed by the cyclic arrangement of multiple dot matrix units. Through this distribution method, the interference between the three-dimensional structures and the interference of the substrate on the three-dimensional structures can be further reduced, so that the visible angle range of the four colors or patterns is larger, optimizing the display effect;

[0068] When the number of the patterns is 5, such as Figures 14 - 15 , select the three-dimensional structure as a pentagonal pyramid. The pentagonal pyramid has 10 planes, 5 convex edges and 5 concave edges. Among them, 2 planes on the left and right sides of the concave edge are combined to form a display surface, then there are 5 display surfaces provided on the pentagonal pyramid, corresponding to displaying five colors or patterns at five different viewing angles. The pentagonal pyramids can be randomly arranged. Similarly to the previous embodiment, more interference may be generated by random arrangement. Preferably, taking five three-dimensional structures as a dot matrix unit, the corners of the five three-dimensional structures in the dot matrix unit are connected diagonally to enclose an equilateral decagon, and thus the mutual interference between different display surfaces can be further reduced.

[0069] Decompose multiple patterns separately by taking the display surface of the three-dimensional structure as a unit. Taking the number of patterns as 3 and the three-dimensional structure as a hexagonal pyramid as an example, with the display surface in a certain orientation achieving the maximum visible area as the benchmark, decompose the patterns into tiles that match the display surface, and spray-print the tiles one by one onto the display surface of the hexagonal pyramid. The three patterns are configured in the same way, so that the three display surfaces of the hexagonal pyramid can be observed from three angles. By combining the display surfaces with the same orientation of multiple hexagonal pyramids to form a pattern, pattern transformation at three angles can be achieved. The same principle applies to color transformation, and thus three-dimensional imaging or color change can be realized. It should be noted that since the observation angle is an inclined top view, the tiles after pattern decomposition are not directly spray-printed parallel to the display surface, but need to be appropriately stretched according to the observation angle, and the stretched tiles are spray-printed on the display surface, so that the normally displayed pattern can be observed at the corresponding inclined viewing angle.

[0070] Receive a textile fabric at a printing device;

[0071] Spray-print a coating on the textile fabric to form multiple three-dimensional structures, forming a three-dimensional dot matrix;

[0072] Based on the patterns corresponding to the multi-dimensional angles in the three-dimensional dot matrix, spray-print the decomposed multiple patterns one by one onto the corresponding display surfaces.

[0073] In order to reinforce the three-dimensional structure, after spray-printing the decomposed multiple patterns one by one onto the corresponding display surfaces, drying can be carried out.

[0074] It should be noted that the "color illusion" described in the present invention refers to observing different colors at different angles. The specific method embodiments are as follows: select the corresponding basic unit according to the number of colors to be changed; create a spot color channel in the design draft to arrange the basic unit; set specific colors at different angles of the basic unit in the pattern channel; send it to a device supporting three-dimensional printing for printing.

[0075] The "pattern illusion" described in the present invention refers to observing different patterns at different angles. The specific method embodiments are as follows: select the corresponding basic unit according to the number of patterns to be changed; create a spot color channel in the design draft to arrange the basic unit; arrange the shapes of the basic unit at the same angle in the pattern channel in a non-overlapping and most compact manner; take the overlapping area of the pattern and the arranged shape in the pattern channel; at the corresponding position of the spot color channel, re-disperse and arrange the overlapping patterns; repeat the process for other patterns; send it to a device supporting three-dimensional printing for printing.

[0076] In the present invention, multiple patterns to be switched are respectively decomposed. According to the number of patterns, the three-dimensional structure type of line array or dot array and the arrangement mode are selected. A digital printing device is used to precisely control the number of printing coating layers of different height lines sprayed by the nozzle in different areas of the textile fabric, forming the required three-dimensional structure and combining to form a line array or dot array. Finally, the nozzle is controlled to precisely spray the decomposed patterns one by one on each display surface of each three-dimensional structure. By changing the viewing angle, the line segments or planes of the three-dimensional structure block each other, so that different colors or patterns displayed in different orientations of the line array or dot array can be observed, realizing multi-dimensional imaging and color change on the textile fabric. The process is streamlined, the imaging is clear, and the process aesthetic feeling is improved.

[0077] The printing device uses a textile digital printer (fabric direct injection printer), such as the Kornit Presto MAX Printer, or any printing device with the same or similar functions in the prior art can be used. The printing device includes a control and management module (such as a PC). Through the control and management module, patterns are received, analyzed, judged, and processed, and finally the digital nozzle is controlled to perform spraying operations. An inkjet machine is selected, and water-based ink is sprayed through the digital nozzle to form a coating, forming a planar pattern on the textile. Or a three-dimensional structure is formed by multi-layer spraying and curing of the digital nozzle. Specifically, the number of printing coating layers of different height lines can be precisely controlled by the digital nozzle of the printing device in different areas of the textile to form the required three-dimensional structure, and the digital nozzle is precisely controlled to spray the decomposed patterns on the corresponding areas of the three-dimensional structure to form a printing layer.

[0078] In the printing method for realizing multi-dimensional imaging and color change of the present invention, decomposing multiple patterns respectively with the display surface of the three-dimensional structure as the unit includes the following steps:

[0079] Create a spot color channel, set the highest three-dimensional height of the three-dimensional structure, define the height of each point of the three-dimensional structure as K, and the K value at the highest point of the three-dimensional structure is the highest;

[0080] Set the K value of each point of the three-dimensional structure according to the number of patterns. When the number of patterns is 2, the K value at the midline of the three-dimensional structure is the highest, and the K value gradually decreases to 0 towards both sides. When the number of patterns is 3-5, the K value at the vertex of the three-dimensional structure is the highest, and the K value gradually decreases to 0 towards the surrounding. The height of the three-dimensional structure is adjusted by the K value. The higher the K value, the higher the printing height. Among them, the K value in the middle of the stripe is the highest, and the K value gradually decreases to 0 towards both sides; the K value at the center of the dot is the highest, and the K value gradually decreases to 0 towards the surrounding; the pyramid / star pyramid is realized by the corresponding regular polygon / star. Connect the inner angle vertices along the geometric incenter of the regular polygon / star (the star only connects the acute inner angle vertices), and divide it into 3-6 equal parts; the K value at the geometric incenter of the divided figure, which is the regular polygon / star, is the highest, and the K value gradually decreases to 0 towards the surrounding;

[0081] Arrange the three-dimensional structure in the spot color channel;

[0082] Compact all the display surfaces corresponding to one angle of the three-dimensional structure in the RGB channel, and obtain the restoration of the scattered arrangement of the multiple display surfaces within the overlapping area with the pattern;

[0083] Repeat the above step until the decomposition of all patterns is completed;

[0084] Delete the area without pattern in the spot color channel to form a spot color channel print and an RGB channel print;

[0085] Upload the spot color channel print and the pattern print to the printing device. The present invention also provides a shoe upper, and the shoe upper is executed with the steps of the method described in any one of the above embodiments. The present invention also provides a shoe, and the shoe is made of the above-mentioned shoe upper.

[0086] It should be noted that although the above embodiments have been described in this article, the patent protection scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, any changes and modifications made to the embodiments described in this article, or equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present invention, and directly or indirectly applying the above technical solutions to other related technical fields are all included in the patent protection scope of the present invention.

Claims

1. A multi-dimensional imaging and color-changing three-dimensional printing method, characterized in that The method includes the steps of: Determining the three-dimensional structure type based on the number of patterns; Decomposing multiple patterns respectively with the display surface of the three-dimensional structure as a unit; Receiving a textile fabric at a printing device; Spraying a coating on the textile fabric to form multiple three-dimensional structures, forming a three-dimensional dot matrix; Based on the patterns corresponding to the multi-dimensional angles in the three-dimensional dot matrix, spraying the decomposed multiple patterns one by one on the corresponding display surfaces.

2. The multi-dimensional imaging and color-changing three-dimensional printing method according to claim 1, wherein When determining the three-dimensional structure type based on the number of patterns, perform the selection of the three-dimensional structure type: When the number of patterns is 2, select the three-dimensional structure as a stripe with a higher middle and lower sides; Or When the number of patterns is 3 - 5, select the three-dimensional structure as a dot-shaped three-dimensional with a higher middle and lower around.

3. A multi-dimensional imaging and color-changing three-dimensional printing method according to claim 2, characterized in that, After selecting the three-dimensional structure as a dot-shaped three-dimensional with a higher middle and lower around, configure the shape of the dot-shaped three-dimensional according to the number of patterns: When the number of patterns is 3, configure the dot-shaped three-dimensional as a hexagonal pyramid or a triangular pyramid; or When the number of patterns is 4, configure the dot-shaped three-dimensional as a quadrangular pyramid or a four-pointed star pyramid; or When the number of patterns is 5, configure the dot-shaped three-dimensional as a five-pointed star pyramid.

4. A multi-dimensional imaging and color-changing three-dimensional printing method according to claim 3, characterized in that, After completing the selection of the three-dimensional structure type, select the arrangement method of the three-dimensional dot matrix according to the three-dimensional structure type.

5. A multi-dimensional imaging and color-changing three-dimensional printing method according to claim 4, characterized in that, Decomposing multiple patterns respectively with the display surface of the three-dimensional structure as a unit includes the following steps: Create a spot color channel, set the highest three-dimensional height of the three-dimensional structure, define the height of each point of the three-dimensional structure as K, and the K value at the highest point of the three-dimensional structure is the highest; Set the K value of each point of the three-dimensional structure according to the number of patterns. When the number of patterns is 2, the K value at the midline of the three-dimensional structure is the highest, and gradually decreases to 0 towards both sides. When the number of patterns is 3 - 5, the K value at the vertex of the three-dimensional structure is the highest, and gradually decreases to 0 towards the surrounding; Arrange the three-dimensional structure in the spot color channel; In the RGB channel, compactly arrange all the display surfaces corresponding to one angle of the three-dimensional structure, and restore the multiple display surfaces within the overlapping area with the pattern to be scattered; Repeat the above step until all patterns are decomposed; Delete the area without patterns in the spot color channel to form a spot color channel print and an RGB channel print; Upload the spot color channel print and the pattern print to the printing device.

6. A multi-dimensional imaging and color-changing three-dimensional printing method according to claim 1, characterized in that: After spraying the decomposed multiple patterns one by one on the corresponding display surfaces, perform drying and reinforcement.

7. A multi-dimensional imaging and color-changing three-dimensional printing method according to claim 1, characterized in that When spraying a coating on the textile fabric to form multiple three-dimensional structures, make the multiple display surfaces of the three-dimensional structure intersect at a highest point.

8. An upper, characterized in that, The upper surface of the shoe is executed with the steps of the method described in any one of claims 1 to 7.

9. A shoe, characterized in that, The shoe is made of an upper surface described in claim 8.

Images