Die

Abstract

The invention provides a mold. The mold comprises a lower mold; the upper die is used in cooperation with the lower die, the surface, matched with the lower die, of the upper die is a first matching surface, a plurality of crack grooves are formed in the first matching surface, and the crack grooves are in preset shapes; the width of each crack groove on the first matching surface is 0.3 mm to 0.8 mm, the depth of each crack groove on the first matching surface is 0.5 mm to 1.0 mm, and the plurality of crack grooves comprise first crack lines and second crack lines which are arranged in an intersecting manner; wherein the first crack line comprises a first line segment and a second line segment which are connected in sequence, the second crack line comprises a third line segment, a fourth line segment and a fifth line segment which are connected in sequence, the second line segment intersects with the fourth line segment, and the fourth line segment comprises a middle segment which is at least partially arranged in a protruding mode in the direction away from the first crack line; the problems that in the prior art, the combining area of an upper die and a lower die for manufacturing the decorating part is small, and the combining effect is poor are solved.

Description

Technical Field

[0001] The invention relates to the technical field of mold manufacturing, and in particular to a mold. Background Art

[0002] In the field of precision manufacturing and design, especially in the home appliance, consumer electronics and automotive interior industries, the appearance and texture of decorative parts are important factors in product differentiation and attracting consumers. Although traditional decorative techniques, such as single-color injection molding or surface spraying, can meet basic decorative needs, they are not capable of expressing natural and complex texture effects, especially the unique and artistic visual effect of ceramic "ice cracks".

[0003] The "ice crack" effect is due to the natural cracks produced by the different expansion coefficients of the body and glaze during the cooling process of high-temperature fired ceramics. These cracks are not only beautiful, but also have a three-dimensional sense. They are one of the most respected textures in high-end decorations. However, transferring the ice crack effect to plastic decorative parts, especially in two-color injection molding technology, faces multiple technical challenges:

[0004] Material differences: The differences in physical properties between plastics and ceramics make the natural formation mechanism of ice cracks difficult to reproduce through conventional injection molding processes.

[0005] Texture control: The core of the ice crack effect is its randomness and natural feel, but in two-color injection molding, precise control and replication of texture is a major challenge, especially in ensuring the diversity and consistency of crack shapes.

[0006] Treatment of joints: In two-color injection molding, the joints of the two materials are prone to delamination, bubbles or poor joints. Especially under complex texture designs, the compatibility and bonding strength between the materials are difficult to achieve an ideal state.

[0007] In view of the above problems, the existing two-color injection molding process is often limited to the replication of simple patterns, and it is difficult to achieve a uniform presentation and three-dimensional effect of ice cracks on decorative parts. In addition, controlling the shape and size of ice cracks and the combination of the second color material that matches them places extremely high demands on mold design and injection molding process. Summary of the invention

[0008] The main purpose of the present invention is to provide a mold to solve the problem that the upper and lower molds for making decorative parts in the prior art have a small bonding area, resulting in a poor bonding effect.

[0009] In order to achieve the above object, according to one aspect of the present invention, a mold is provided, comprising:

[0010] Lower mold;

[0011] An upper die is used in conjunction with a lower die, the surface where the upper die and the lower die cooperate is a first cooperation surface, a plurality of crack grooves are arranged on the first cooperation surface, and the plurality of crack grooves are of a preset shape;

[0012] Each crack groove has a width of 0.3 mm to 0.8 mm and a depth of 0.5 mm to 1.0 mm on the first mating surface, and the plurality of crack grooves include a first crack line and a second crack line that are intersectingly arranged;

[0013] Among them, the first crack line includes a first line segment and a second line segment connected in sequence, the second crack line includes a third line segment, a fourth line segment and a fifth line segment connected in sequence, the second line segment intersects with the fourth line segment, and the fourth line segment includes at least a portion of a middle segment protruding in a direction away from the first crack line.

[0014] Further, the fourth line segment includes a first straight line segment, a second straight line segment, a third straight line segment and a fourth straight line segment connected in sequence, the first straight line segment is connected to the third line segment, the fourth straight line segment is connected to the fifth line segment, the second straight line segment and the third straight line segment are set at an obtuse angle, and the second straight line segment and the third straight line segment together form an intermediate segment.

[0015] Furthermore, the fourth line segment further includes a fifth straight line segment connected between the first straight line segment and the second straight line segment, the fifth straight line segment and the first straight line segment form a first angle, and the fifth straight line segment and the second straight line segment form a second angle.

[0016] The first angle is within a range of 170 to 180 degrees, and the second angle is within a range of 170 to 180 degrees. Further, the fourth line segment also includes a sixth straight line segment and a seventh straight line segment sequentially connected between the third straight line segment and the fourth straight line segment, a third angle is formed between the third straight line segment and the sixth straight line segment, and a fourth angle is formed between the sixth straight line segment and the seventh straight line segment;

[0017] Among them, the fourth angle is smaller than the third angle.

[0018] Further, the first line segment includes an eighth straight line segment and a ninth straight line segment connected in sequence, the ninth straight line segment is connected to the second line segment, a fifth angle is formed between the eighth straight line segment and the ninth straight line segment, and a sixth angle is formed between the ninth straight line segment and the second line segment;

[0019] Among them, the fifth angle is smaller than the sixth angle.

[0020] Further, the material of the upper mold is transparent polycarbonate; and / or,

[0021] The thickness of the upper mold is 1.5mm to 3.0mm.

[0022] Further, the material of the lower mold is acrylonitrile-butadiene-styrene copolymer; and / or,

[0023] The thickness of the lower die is 2.0 mm to 3.0 mm.

[0024] Furthermore, the distance between the starting point of each crack groove and the edge of the upper mold opening is 0.3 mm to 1.0 mm.

[0025] Further, the surface where the lower mold and the upper mold match is a second matching surface;

[0026] Among them, a plurality of protrusions are provided on the second mating surface, and the plurality of protrusions are arranged in one-to-one correspondence with the plurality of crack grooves. The width of each protrusion on the second mating surface is 0.3mm to 0.8mm, and the height is 0.5mm to 1.0mm.

[0027] Further, a first pouring port is provided at a portion of the inner surface of the upper mold relatively close to the opening of the upper mold, and a diameter of the first pouring port is less than or equal to 1.15 mm; and / or,

[0028] A second pouring port is provided at a portion of the outer surface of the lower mold relatively close to the opening of the lower mold, and a diameter of the second pouring port is less than or equal to 1.6 mm.

[0029] By applying the technical solution of the present invention, a plurality of crack grooves of preset shapes are arranged on the first mating surface of the upper mold, and the width and depth of these grooves are strictly controlled between 0.3mm to 0.8mm and 0.5mm to 1.0mm, thereby ensuring the fineness and three-dimensional sense of the ice crack texture. The random overlap of the cracks and the specific protrusion design make the ice crack effect more natural and smooth, enhancing the visual appeal and artistic value of the decorative piece.

[0030] The special design of the crack groove of the upper mold and the precise fit between the lower mold and the upper mold enable the ice crack effect to be evenly distributed during the injection molding process without obvious defects.

[0031] The reflected light and refracted light generated by the ice crack area under illumination interweave to form a unique three-dimensional effect, which enhances the visual level and dynamic beauty of the decorative piece. At the same time, through parameterized adjustment of the depth and width of the crack grooves, as well as the design of curved lines, the surface of the decorative piece not only presents a delicate texture, but also feels softer to the touch, avoiding the possible discomfort caused by the ice crack effect, and achieving dual optimization of vision and touch.

[0032] This technical solution is not only applicable to the fields of home appliances, consumer electronics and automotive interiors, but also provides new personalized options for product design. By adjusting the shape, size and distribution of the crack grooves, a variety of ice crack effects can be created to meet the needs of different consumers for high-end texture and unique design, thus providing strong support for product differentiation competition in the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0034] Figure 1 A schematic diagram showing the cooperation between the upper die and the lower die in an embodiment of the present application;

[0035] Figure 2 A schematic diagram of a crack groove according to an embodiment of the present application is shown.

[0036] The above drawings include the following reference numerals:

[0037] 10. Lower die; 20. Upper die; 21. First mating surface; 22. Crack groove; 221. First line segment; 222. Second line segment; 223. Third line segment; 224. Fourth line segment; 225. Fifth line segment; 31. First straight line segment; 32. Second straight line segment; 33. Third straight line segment; 34. Fourth straight line segment; 35. Fifth straight line segment; 36. Sixth straight line segment; 37. Seventh straight line segment; 38. Eighth straight line segment; 39. Ninth straight line segment. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] In the field of precision manufacturing and design, especially in the home appliance, consumer electronics and automotive interior industries, the appearance and texture of decorative parts are important factors in product differentiation and attracting consumers. Although traditional decorative techniques, such as single-color injection molding or surface spraying, can meet basic decorative needs, they are not capable of expressing natural and complex texture effects, especially the unique and artistic visual effect of ceramic "ice cracks".

[0040] The "ice crack" effect is due to the natural cracks produced by the different expansion coefficients of the body and glaze during the cooling process of high-temperature fired ceramics. These cracks are not only beautiful, but also have a three-dimensional sense. They are one of the most respected textures in high-end decorations. However, transferring the ice crack effect to plastic decorative parts, especially in two-color injection molding technology, faces multiple technical challenges:

[0041] Material differences: The differences in physical properties between plastics and ceramics make the natural formation mechanism of ice cracks difficult to reproduce through conventional injection molding processes.

[0042] Texture control: The core of the ice crack effect is its randomness and natural feel, but in two-color injection molding, precise control and replication of texture is a major challenge, especially in ensuring the diversity and consistency of crack shapes.

[0043] Treatment of joints: In two-color injection molding, the joints of the two materials are prone to delamination, bubbles or poor joints. Especially under complex texture designs, the compatibility and bonding strength between the materials are difficult to achieve an ideal state.

[0044] In view of the above problems, the existing two-color injection molding process is often limited to the replication of simple patterns, and it is difficult to achieve a uniform presentation and three-dimensional effect of ice cracks on decorative parts. In addition, controlling the shape and size of ice cracks and the combination of the second color material that matches them places extremely high demands on mold design and injection molding process.

[0045] The technical purpose of this application is to provide a mold for the above problems, including:

[0046] Lower mold 10;

[0047] An upper die 20, the upper die 20 is used in conjunction with the lower die 10, the surface where the upper die 20 and the lower die 10 cooperate is a first cooperation surface 21, a plurality of crack grooves 22 are provided on the first cooperation surface 21, and the plurality of crack grooves 22 are of a preset shape;

[0048] Each crack groove 22 has a width of 0.3 mm to 0.8 mm and a depth of 0.5 mm to 1.0 mm on the first mating surface 21, and the plurality of crack grooves 22 include a first crack line and a second crack line that are intersectingly arranged;

[0049] Among them, the first crack line includes a first line segment 221 and a second line segment 222 connected in sequence, the second crack line includes a third line segment 223, a fourth line segment 224 and a fifth line segment 225 connected in sequence, the second line segment 222 intersects with the fourth line segment 224, and the fourth line segment 224 includes at least a portion of a middle segment protruding in a direction away from the first crack line.

[0050] Specifically, Figure 1 and Figure 2 As shown, by setting a plurality of crack grooves of preset shapes on the first mating surface of the upper mold 20, the width and depth of these grooves are strictly controlled between 0.3mm to 0.8mm and 0.5mm to 1.0mm, ensuring the fineness and three-dimensional sense of the ice crack texture. The random overlap and specific protrusion design of the crack grooves make the ice crack effect more natural and smooth, enhancing the visual appeal and artistic value of the decorative piece.

[0051] The special design of the crack groove on the upper mold 20 and the precise fit between the lower mold 10 and the upper mold 20 enable the ice crack effect to be evenly distributed during the injection molding process without obvious defects.

[0052] The reflected light and refracted light generated by the ice crack area under illumination interweave to form a unique three-dimensional effect, which enhances the visual level and dynamic beauty of the decorative piece. At the same time, through parameterized adjustment of the depth and width of the crack grooves, as well as the design of curved lines, the surface of the decorative piece not only presents a delicate texture, but also feels softer to the touch, avoiding the possible discomfort caused by the ice crack effect, and achieving dual optimization of vision and touch.

[0053] This technical solution is not only applicable to the fields of home appliances, consumer electronics and automotive interiors, but also provides new personalized options for product design. By adjusting the shape, size and distribution of the crack grooves, a variety of ice crack effects can be created to meet the needs of different consumers for high-end texture and unique design, thus providing strong support for product differentiation competition in the market.

[0054] In summary, this technical solution significantly improves the visual and tactile experience of decorative parts through structural innovation and process optimization, and realizes the accurate reproduction and personalized expression of the "ice crack" texture on plastic decorative parts.

[0055] Furthermore, the fourth line segment 224 includes a first straight line segment 31, a second straight line segment 32, a third straight line segment 33 and a fourth straight line segment 34 which are connected in sequence, the first straight line segment 31 is connected to the third line segment 223, the fourth straight line segment 34 is connected to the fifth line segment 225, the second straight line segment 32 and the third straight line segment 33 are arranged at an obtuse angle, and the second straight line segment 32 and the third straight line segment 33 together form an intermediate segment.

[0056] Specifically, the second straight line segment 32 and the third straight line segment 33 in the second crack line are arranged at an obtuse angle to form a protruding middle segment. This design not only increases the richness of the ice crack details, but also simulates the slight protrusion of the crack in the natural ice crack, making the ice crack effect on the surface of the decorative piece more realistic, more delicate and three-dimensional visually, and enhancing the artistic sense and appreciation of the decorative piece.

[0057] The protruding design of the middle section, combined with the depth variation of the crack groove, further enhances the light and shadow contrast on the surface of the decorative piece, making the ice cracks present a richer visual level under different angles and lighting conditions. This enhanced sense of level makes the decorative piece more visually fascinating, meeting the visual impact requirements of high-end product design.

[0058] The multi-section connection design of crack grooves not only increases the texture details of the decorative part surface, but also optimizes the tactile experience. While maintaining the visual beauty, it ensures that the surface texture is soft to the touch, avoids overly sharp edges or uneven surfaces, and makes the decorative part feel comfortable and high-quality in touch.

[0059] In summary, this technical solution not only enhances the visual impact and artistry of the ice crack effect through the multi-segment connection design of the crack line, but also improves the overall quality and tactile experience of the decorative parts.

[0060] Furthermore, the fourth line segment 224 further includes a fifth straight line segment 35 connected between the first straight line segment 31 and the second straight line segment 32, wherein the fifth straight line segment 35 forms a first angle with the first straight line segment 31, and forms a second angle with the second straight line segment 32;

[0061] Among them, the first angle is in the range of 170 degrees to 180 degrees, and the second angle is in the range of 170 degrees to 180 degrees.

[0062] The first angle and the second angle between the fifth straight line segment 35 and the first straight line segment 31 and the second straight line segment 32 are both set within the range of 170 degrees to 180 degrees. This nearly straight but slightly curved connection method simulates the complex direction of cracks in natural ice cracks, increases the naturalness of the texture and the richness of details, makes the ice crack effect on the surface of the decorative part more vivid and lifelike, and improves the visual appeal and artistic value of the decorative part.

[0063] The setting of the first angle and the second angle not only increases the dynamic sense of the ice crack texture on the surface of the decorative piece, but also produces more complex light and shadow changes under different lighting angles. This change enhances the three-dimensional sense and spatial sense of the surface of the decorative piece, making the ice crack effect more visually eye-catching. Even in static display or daily use, it can present a dynamic visual effect, which improves the ornamental and interactive nature of the decorative piece.

[0064] The introduction of the fifth straight line segment 35 and the slightly curved design at its connection avoid the sharp edges that may appear in the traditional ice crack design, making the surface texture of the decorative part smoother and more delicate to the touch. This design not only retains the visual three-dimensional sense of the ice crack, but also improves the comfort of the tactile experience, meeting the dual high standards of consumers for high-end decorative parts in terms of vision and touch.

[0065] The complex connection design of the line segments in the crack groove, combined with the two-color injection molding of transparent PC material and solid color ABS material, not only enhances the clarity and three-dimensional sense of the ice crack effect, but also optimizes the combination of the two materials, ensuring the structural integrity and strength of the decorative parts, reducing potential stress concentration and material delamination problems, and further improving the durability and reliability of the decorative parts.

[0066] This technical solution not only enriches the expression of ice crack effects by introducing more changes and details in the crack line design, but also provides more personalized options for the design of decorative parts. Designers can create ever-changing ice crack textures by adjusting the specific values ​​of the first angle and the second angle, as well as the length and curvature of the fifth straight line segment 35, to meet the personalized needs of different consumers for decorative effects and enhance the market competitiveness of the product. Furthermore, the fourth line segment 224 also includes a sixth straight line segment 36 and a seventh straight line segment 37 sequentially connected between the third straight line segment 33 and the fourth straight line segment 34, a third angle is formed between the third straight line segment 33 and the sixth straight line segment 36, and a fourth angle is formed between the sixth straight line segment 36 and the seventh straight line segment 37;

[0067] Among them, the fourth angle is smaller than the third angle.

[0068] Specifically, the introduction of the sixth straight line segment 36 and the seventh straight line segment 37, as well as the angle design between them and the third straight line segment 33 and the fourth straight line segment 34, increase the complexity of the details of the crack line. In particular, the setting of the fourth angle being smaller than the third angle simulates the subtle changes in the depth and width of the cracks in the natural ice cracks, making the ice crack effect on the surface of the decorative part closer to the natural beauty of the real ceramic ice cracks, and the texture expression is stronger.

[0069] The design of the angle and the combination of length, straightness and curvature of the line segments create depth changes and a sense of space inside the crack groove. This change produces richer light and shadow contrast under different angles and lighting conditions, making the ice crack effect not only three-dimensional, but also richer and more varied in visual level, enhancing the visual impact and appeal of the decorative piece.

[0070] By finely adjusting the angle between the segments in the crack groove, the texture of the decorative part surface is further optimized. The ice crack texture is not only lifelike visually, but also more delicate to the touch, avoiding overly harsh edges, and improving the overall touch comfort and quality of the decorative part.

[0071] The complex connection of the internal line segments of the crack groove and the precise control of the angle improve the flow properties of the material during the injection molding process, help reduce stress concentration, and avoid cracks or bubbles at the junction of the materials, thereby improving the structural stability and durability of the decorative parts and reducing the potential risk of finished product yield.

[0072] The line segment connection design of the crack groove in this technical solution, including the difference setting of the third angle and the fourth angle, provides designers with a broader creative space. By adjusting these parameters, a variety of ice crack effects can be created to meet different application scenarios and aesthetic needs, thereby enriching the design language of decorative parts. Furthermore, the first line segment 221 includes an eighth straight line segment 38 and a ninth straight line segment 39 connected in sequence, the ninth straight line segment 39 is connected to the second line segment 222, the eighth straight line segment 38 and the ninth straight line segment 39 form a fifth angle, and the ninth straight line segment 39 and the second line segment 222 form a sixth angle;

[0073] Among them, the fifth angle is smaller than the sixth angle.

[0074] The introduction of the eighth straight line segment 38 and the ninth straight line segment 39, as well as the different angles formed between them and the second line segment 222, make the shape of the first crack line more complex and varied, simulating the gradual change and turning of cracks in natural ice cracks, and increasing the texture details of the ice crack effect on the surface of the decorative part, making it more vivid and natural and more visually attractive.

[0075] The setting of the fifth angle being smaller than the sixth angle creates a depth change inside the crack groove by changing the direction and turning point of the crack line on the surface of the decorative part. This change can produce a unique light and shadow effect when observed at different angles, enhancing the three-dimensional sense of the ice crack effect, making the decorative part more visually colorful and more ornamental.

[0076] By introducing more line connections and angle changes in the crack line design, the ice crack effect on the surface of the decorative part is also optimized in terms of touch. The complex shape and subtle turning of the crack groove bring a more delicate and varied tactile experience, making the decorative part not only visually fascinating, but also more comfortable to touch, improving the overall user experience.

[0077] The complex connection mode of the internal line segments of the crack groove helps to improve the flow properties and filling state of the material during the two-color injection molding process, avoids the poor combination of materials at the junction, such as bubbles, delamination or poor joining, and further ensures the structural integrity and durability of the decorative parts.

[0078] Different settings of the fifth angle and the sixth angle, as well as the length and curvature adjustment of the eighth straight line segment 38 and the ninth straight line segment 39, provide designers with greater creative space. By adjusting these parameters, a variety of ice crack effects can be created to meet the personalized pursuit of decorative effects by different consumers, thereby enhancing the market competitiveness and product differentiation of decorative parts. Furthermore, the material of the upper mold 20 is transparent polycarbonate; and / or,

[0079] The thickness of the upper mold 20 is 1.5 mm to 3.0 mm.

[0080] Further, the material of the lower mold 10 is acrylonitrile-butadiene-styrene copolymer; and / or,

[0081] The thickness of the lower mold 10 is 2.0 mm to 3.0 mm.

[0082] Specifically, the upper mold 20 is made of transparent polycarbonate (PC) material, not only because of its high transparency and good impact resistance, which can ensure that the ice crack effect is clearly visible and durable, but also because of the refractive properties of the PC material, which enhances the optical effect of the crack area, so that the ice crack shows unique light and shadow changes under different lighting conditions, thereby enhancing the visual appeal of the decorative parts.

[0083] The thickness of the upper mold 20 is set to 1.5mm to 3.0mm, and the thickness of the lower mold 10 is set to 2.0mm to 3.0mm, which can ensure that the decorative parts have sufficient structural strength and rigidity while maintaining the ice crack visual effect. Reasonable thickness design avoids the problem of unclear ice crack effect due to too thin or overall aesthetics affected by too thick, so that the decorative parts have good physical properties while meeting the visual requirements, and meet the needs of multiple scenarios.

[0084] The different choices of materials for the upper mold 20 and the lower mold 10, namely the combination of transparent PC and solid color ABS, not only highlight the three-dimensional sense and depth of the ice cracks, but also enhance the decorativeness and personalization of the decorative parts through the contrast of the colors and textures of the two materials. The combination of the transparent PC base and the solid color ABS surface forms a sharp contrast, making the visual effect of the ice cracks more prominent, satisfying consumers' high-end pursuit of product appearance and texture.

[0085] The high heat resistance and anti-aging properties of transparent polycarbonate, as well as the high hardness and easy processing of ABS, enable the decorative parts to maintain the durability and stability of the ice crack effect in complex use environments. This material combination not only improves the durability of decorative parts, but also broadens their application range, making them suitable for home appliances, consumer electronics, automotive interiors and other fields, meeting the use needs in different environments.

[0086] To sum up, this technical solution not only optimizes the molding quality and visual effect of the ice crack decorative parts through the material selection and thickness control of the upper mold 20 and the lower mold 10, but also improves its structural strength, durability and scope of application, which brings significant technical advantages to the design and manufacture of decorative parts and promotes product design to develop in a more personalized and higher quality direction.

[0087] Furthermore, the distance between the starting point of each crack groove 22 and the opening edge of the upper mold 20 is 0.3 mm to 1.0 mm.

[0088] Specifically, the minimum distance between the crack starting point and the edge of the upper mold 20 is set to 0.3mm, which prevents the crack from directly reaching the edge of the decorative part, reduces the concentration of crack lines at the edge, prevents visual clutter in the edge area, and maintains the overall aesthetics and design of the decorative part. At the same time, the maximum distance of 1.0mm is set to ensure that the ice crack effect is fully displayed on the surface of the decorative part, avoids the difficulty of molding caused by the crack being too close to the edge, and optimizes the design layout of the decorative part.

[0089] The crack starting point is kept at a certain distance from the opening edge of the upper mold 20, which is conducive to forming a good sealing effect during the molding process, preventing material overflow or poor joints at the edge during the production process, ensuring the flatness of the edge of the decorative part and the integrity of the structure, and improving the quality and durability of the decorative part.

[0090] Precise distance control also helps ensure that the ice crack effect is evenly distributed across the entire surface of the decorative piece, avoiding the problem of cracks being too concentrated or unevenly dispersed, making the visual effect of the ice crack more natural and harmonious, and improving the visual appeal and artistic value of the decorative piece.

[0091] The distance setting between the starting point of the crack groove 22 and the opening edge of the upper mold 20 provides a clear reference standard for mold design and injection molding process, which is conducive to accurately controlling the opening and closing of the mold and the flow of materials during the production process, reducing the uncertainty of process parameters and improving production efficiency and yield rate.

[0092] This design is not only suitable for decorative parts in the fields of home appliances, consumer electronics and automotive interiors, but can also be combined with other design elements (such as patterns, text, etc.), providing freedom for the personalized design of decorative parts, meeting different application scenarios and consumer needs, and broadening the market applicability of decorative parts.

[0093] To sum up, by controlling the distance between the starting point of the crack groove 22 and the opening edge of the upper mold 20, not only the ice crack effect and aesthetics of the decorative parts are optimized, but also its structural integrity and the controllability of the production process are improved, which brings significant technical advantages and innovative value to the design and manufacturing of decorative parts, and shows a broader design space and market prospects.

[0094] Further, the surface where the lower mold 10 and the upper mold 20 match is a second matching surface;

[0095] Therein, a plurality of protrusions are provided on the second mating surface, and the plurality of protrusions are arranged in one-to-one correspondence with the plurality of crack grooves 22 , and the width of each protrusion on the second mating surface is 0.3 mm to 0.8 mm, and the height is 0.5 mm to 1.0 mm.

[0096] Specifically, the multiple protrusions on the lower mold 10 form a complementary structure with the crack groove 22 inside the upper mold 20. Through the two-color injection molding process, the protrusions of the lower mold 10 can accurately replicate the crack groove structure in the upper mold 20, ensuring the accurate reproduction of the ice crack effect on the surface of the decorative part. This precise texture replication not only improves the clarity of the ice crack, but also ensures the consistency and beauty of the texture of the decorative part.

[0097] The width of the protrusion on the second mating surface is 0.3mm to 0.8mm, and the height is 0.5mm to 1.0mm. This setting makes the ice crack effect on the surface of the decorative part not only have a visual three-dimensional sense, but also can feel the subtle changes in texture when touched. This three-dimensional ice crack design enhances the tactile experience of the decorative part, making it more realistic in both vision and touch, and meeting consumers' pursuit of high quality for high-end decorative parts.

[0098] The setting of the protrusion not only increases the details of the decorative part surface, but also optimizes the internal structure of the decorative part by cooperating with the structure of the crack groove 22, thereby improving its overall structural strength and impact resistance. This helps the decorative part maintain the durability of the ice crack effect in a complex use environment, reduces the wear or damage of the crack caused by external impact, and improves the durability and service life of the decorative part.

[0099] The raised design on the lower mold 10 provides a clear reference standard for mold manufacturing and injection molding process, helps to accurately control the mold fitting accuracy and material flow path during the production process, reduces the scrap rate during the production process, and improves the production efficiency and cost-effectiveness of decorative parts.

[0100] By adjusting the width and height of the protrusion and the correspondence with the crack groove 22, ice crack decorative parts with different styles and effects can be created, meeting the personalized needs of different consumers and application scenarios, enriching the product line of decorative parts and enhancing market competitiveness.

[0101] In summary, this technical solution not only optimizes the ice crack effect of the decorative part and improves its structural strength and durability through the convex design of the matching surface of the lower mold 10 and the upper mold 20, but also brings significant technical innovation and value enhancement to the design and manufacture of decorative parts through the optimization of production process and the personalization of decorative effects, showing the infinite possibilities of product design. Furthermore, a first pouring port is provided on the inner surface of the upper mold 20 relatively close to the opening of the upper mold 20, and the diameter of the first pouring port is less than or equal to 1.15 mm; and / or,

[0102] A second pouring port is provided on a portion of the outer surface of the lower mold 10 relatively close to the opening of the lower mold 10 , and a diameter of the second pouring port is less than or equal to 1.6 mm.

[0103] The multiple protrusions on the lower mold 10 form a complementary structure with the crack groove 22 inside the upper mold 20. Through the two-color injection molding process, the protrusions of the lower mold 10 can accurately replicate the crack groove structure in the upper mold, ensuring the accurate reproduction of the ice crack effect on the surface of the decorative part. This precise texture replication not only improves the clarity of the ice crack, but also ensures the consistency and beauty of the texture of the decorative part.

[0104] The width of the protrusion on the second mating surface is 0.3mm to 0.8mm, and the height is 0.5mm to 1.0mm. This setting makes the ice crack effect on the surface of the decorative part not only have a visual three-dimensional sense, but also can feel the subtle changes in texture when touched. This three-dimensional ice crack design enhances the tactile experience of the decorative part, making it more realistic in both vision and touch, and meeting consumers' pursuit of high quality for high-end decorative parts.

[0105] The setting of the protrusion not only increases the details of the decorative part surface, but also optimizes the internal structure of the decorative part by cooperating with the structure of the crack groove 22, thereby improving its overall structural strength and impact resistance. This helps the decorative part maintain the durability of the ice crack effect in a complex use environment, reduces the wear or damage of the crack caused by external impact, and improves the durability and service life of the decorative part.

[0106] The raised design on the lower mold 10 provides a clear reference standard for mold manufacturing and injection molding process, helps to accurately control the mold fitting accuracy and material flow path during the production process, reduces the scrap rate during the production process, and improves the production efficiency and cost-effectiveness of decorative parts.

[0107] By adjusting the width and height of the protrusion and the correspondence with the crack groove 22, ice crack decorative parts with different styles and effects can be created, meeting the personalized needs of different consumers and application scenarios, enriching the product line of decorative parts and enhancing market competitiveness.

[0108] To sum up, this technical solution not only optimizes the ice crack effect of the decorative parts and improves their structural strength and durability through the raised design on the matching surfaces of the lower mold 10 and the upper mold 20, but also brings significant technological innovation and value enhancement to the design and manufacture of decorative parts through the optimization of the production process and the personalization of the decorative effect.

[0109] It should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates that there are features, steps, operations, devices, components and / or combinations thereof. Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but in appropriate cases, the techniques, methods and equipment should be regarded as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in the subsequent figures.

[0110] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0111] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0112] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0113] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mold, characterized in that: include: Lower die (10); An upper mold (20), the upper mold (20) being used in conjunction with the lower mold (10), the surface of the upper mold (20) and the lower mold (10) being matched is a first matching surface (21), a plurality of crack grooves (22) being provided on the first matching surface (21), the plurality of crack grooves (22) being of a preset shape; The width of each of the crack grooves (22) on the first mating surface (21) is 0.3 mm to 0.8 mm, and the depth is 0.5 mm to 1.0 mm, and the plurality of crack grooves (22) include a first crack line and a second crack line that are arranged to intersect; The first crack line comprises a first line segment (221) and a second line segment (222) connected in sequence, the second crack line comprises a third line segment (223), a fourth line segment (224) and a fifth line segment (225) connected in sequence, the second line segment (222) intersects with the fourth line segment (224), and the fourth line segment (224) comprises at least a portion of a middle segment protruding in a direction away from the first crack line.

2. The mold according to claim 1, characterized in that: The fourth line segment (224) comprises a first straight line segment (31), a second straight line segment (32), a third straight line segment (33) and a fourth straight line segment (34) which are connected in sequence, the first straight line segment (31) is connected to the third line segment (223), the fourth straight line segment (34) is connected to the fifth line segment (225), the second straight line segment (32) and the third straight line segment (33) are arranged at an obtuse angle, and the second straight line segment (32) and the third straight line segment (33) together form the middle segment.

3. The mold according to claim 2, characterized in that: The fourth line segment (224) further comprises a fifth straight line segment (35) connected between the first straight line segment (31) and the second straight line segment (32), wherein a first angle is formed between the fifth straight line segment (35) and the first straight line segment (31), and a second angle is formed between the fifth straight line segment (35) and the second straight line segment (32), Wherein, the first angle is in the range of 170 degrees to 180 degrees, and the second angle is in the range of 170 degrees to 180 degrees.

4. The mold according to claim 2, characterized in that: The fourth line segment (224) further comprises a sixth straight line segment (36) and a seventh straight line segment (37) which are sequentially connected between the third straight line segment (33) and the fourth straight line segment (34), a third angle is formed between the third straight line segment (33) and the sixth straight line segment (36), and a fourth angle is formed between the sixth straight line segment (36) and the seventh straight line segment (37); Wherein, the fourth angle is smaller than the third angle.

5. The mold according to claim 1, characterized in that: The first line segment (221) comprises an eighth straight line segment (38) and a ninth straight line segment (39) which are connected in sequence, the ninth straight line segment (39) is connected to the second line segment (222), a fifth angle is formed between the eighth straight line segment (38) and the ninth straight line segment (39), and a sixth angle is formed between the ninth straight line segment (39) and the second line segment (222); Wherein, the fifth angle is smaller than the sixth angle.

6. The mold according to claim 1, characterized in that: The upper mold (20) is made of transparent polycarbonate; and / or, The thickness of the upper mold (20) is 1.5 mm to 3.0 mm.

7. The mold according to claim 1, characterized in that: The material of the lower mold (10) is acrylonitrile-butadiene-styrene copolymer; and / or, The thickness of the lower mold (10) is 2.0 mm to 3.0 mm.

8. The mold according to claim 1, characterized in that: The distance between the starting point of each crack groove (22) and the opening edge of the upper mold (20) is 0.3 mm to 1.0 mm.

9. The mold according to claim 1, characterized in that: The surface of the lower mold (10) and the upper mold (20) that matches each other is a second matching surface; Wherein, a plurality of protrusions are provided on the second mating surface, and the plurality of protrusions are arranged in one-to-one correspondence with the plurality of crack grooves (22), and each of the protrusions has a width of 0.3 mm to 0.8 mm and a height of 0.5 mm to 1.0 mm on the second mating surface.

10. The mold according to claim 1, characterized in that: A first pouring port is provided on a portion of the inner surface of the upper mold (20) relatively close to the opening of the upper mold (20), and the diameter of the first pouring port is less than or equal to 1.15 mm; and / or, A second pouring port is provided on a portion of the outer surface of the lower mold (10) relatively close to the opening of the lower mold (10), and the diameter of the second pouring port is less than or equal to 1.6 mm.

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