Encapsulation mold, encapsulation method, and terminal
By designing a sealing mold, the sealing mold core and support mold core are used to flexibly wrap the curved edges of the product, solving the problems of inaccurate positioning and glue overflow in 3D curved edge sealing, and achieving a highly efficient sealing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHENSHI YUZHAN PRECISION TECH CO LTD
- Filing Date
- 2023-11-20
- Publication Date
- 2026-06-12
AI Technical Summary
Existing technologies struggle to achieve precise positioning when sealing 3D curved edges, leading to issues such as adhesive overflow and product deformation.
The sealing mold is used, including the upper and lower molds that fit together, the sealing mold core and the support mold core. The protrusion of the sealing mold core and the support surface of the support mold core flexibly wrap the curved edge of the product to ensure accurate positioning and force balance.
It enables precise sealing of 3D curved edges, avoiding glue overflow and product deformation, and improving sealing yield and product quality.
Smart Images
Figure CN117549469B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of sealing technology for curved edges of products, specifically to a sealing mold, sealing method, and terminal. Background Technology
[0002] In actual production, after product assembly, such as products formed by assembling glass panels and display components, the edges of the product need to be sealed with adhesive to meet appearance and functional requirements. Currently, this is usually achieved by using an upper and lower mold to close the mold, placing the product's edges within the cavity formed by the mold, and then filling the cavity with adhesive to seal the product's edges. However, when the product's edges are 3D curved, the upper and lower molds cannot be precisely positioned relative to the product's edges after closing, resulting in an inability to form a completely sealed cavity. This leads to adhesive overflow. Furthermore, due to the planar structure of the upper and lower molds, the product's edges are easily damaged after the molds are closed, causing product deformation and damage. Summary of the Invention
[0003] In view of the above, it is necessary to propose a sealing mold, sealing method and terminal to achieve precise positioning of the curved edge of the product, avoid glue overflow, avoid damaging the curved edge of the product, and improve the sealing yield.
[0004] This application provides a sealing mold for sealing the curved edge of a product. The curved edge has an inner concave surface and an outer convex surface. The mold includes: an upper mold and a lower mold for mold fitting, with the product located between the upper mold and the lower mold; a sealing core with a sealing groove and first and second groove walls located on both sides of the sealing groove. The sealing core is pressed between the upper mold and the product. A protrusion is provided on the side of the first groove wall facing the product. The protrusion is pressed into the inner concave surface of the curved edge, and the end of the curved edge extends into the sealing core. The second groove wall is pressed against the side of the first groove wall; the support mold core is pressed between the product and the lower mold and both ends of the support mold core are embedded in the lower mold. The support mold core has a support curved surface with the same bending direction as the outer convex surface of the curved edge. The support curved surface presses against the outer convex surface of the curved edge. The position where the protrusion presses against the inner concave surface of the curved edge and the position where the support curved surface presses against the outer convex surface of the curved edge overlap along the mold closing direction.
[0005] In some embodiments, the protrusion includes a first protrusion, a second protrusion, and a third protrusion. The first protrusion is connected to the first groove wall, the second protrusion is connected to the first protrusion and the cross-section of the second protrusion is smaller than that of the first protrusion, and the third protrusion is connected to the edge of the second protrusion near the second groove wall and the cross-section of the third protrusion is smaller than that of the second protrusion. The surfaces of the first protrusion facing the product, the surfaces of the second protrusion facing the product, and the surfaces of the third protrusion facing the product are all inclined surfaces.
[0006] In some embodiments, the overpressure range between the third protrusion and the concave surface of the curved edge is 0.05mm-0.15mm, and the overpressure range between the second protrusion and the concave surface of the curved edge is 0.01mm-0.03mm.
[0007] In some embodiments, the second groove wall has a fourth protrusion on the side facing the first groove wall, and the fourth protrusion presses against a portion of the structure near the outer convex surface at the end of the curved edge.
[0008] In some embodiments, the overpressure range between the supporting curved surface and the convex surface of the curved edge is 0.04mm-0.08mm.
[0009] In some embodiments, the sealing mold further includes a light-transmitting plate connected to the sealing mold core and located between the upper mold and the sealing mold core, the light-transmitting plate allowing light to enter and illuminate the sealing mold core.
[0010] In some embodiments, the sealing mold core is further provided with a sealing bottom wall, the sealing bottom wall is connected to the light-transmitting plate, and the first groove wall and the second groove wall are spaced apart on the sealing bottom wall, the sealing bottom wall, the first groove wall and the second groove wall forming the sealing groove.
[0011] In some embodiments, the sealing mold core is further provided with a filling head and an overflow head. The filling head and the overflow head are both connected to the bottom wall of the sealing mold and are both connected to the sealing groove. The filling head and the overflow head are both inserted through the light-transmitting plate. The filling head is used to introduce adhesive into the sealing groove, and the overflow head is used to draw the adhesive out of the sealing groove.
[0012] This application embodiment also provides a sealing method for sealing the curved edge of a product, wherein the curved edge has an inner concave surface and an outer convex surface, including:
[0013] Prepare the above-mentioned sealing mold;
[0014] The product is placed in the upper mold and the lower mold, with the curved edge of the product positioned between the sealing mold core and the supporting mold core;
[0015] The upper mold and the lower mold are closed, such that the protrusion of the sealing mold core is pressed into the concave surface of the curved edge, the second groove wall of the sealing mold core is pressed against the end of the curved edge, the supporting curved surface of the supporting mold core is pressed against the convex surface of the curved edge, and the position where the protrusion is pressed into the concave surface of the curved edge and the position where the supporting curved surface is pressed against the convex surface of the curved edge overlap along the mold closing direction;
[0016] A colloid is poured into the sealing chamber formed by the sealing groove and the curved edge, and the colloid is cured and formed to connect the end of the curved edge and the concave surface of the curved edge.
[0017] The upper mold and the lower mold are opened to remove the sealed product.
[0018] This application embodiment also provides a terminal, including a display screen and an encapsulating layer, wherein the encapsulating layer is formed on the curved edge of the display screen by applying adhesive through the aforementioned encapsulating mold.
[0019] The aforementioned sealing mold, sealing method, and terminal achieve flexible wrapping of the product's curved edge by pressing the protruding part of the first groove wall of the sealing mold core into the concave surface of the curved edge, pressing the second groove wall against the end of the curved edge, and pressing the supporting curved surface of the supporting mold core against the convex surface of the curved edge. Because the sealing mold core and supporting mold core can flexibly wrap the curved edge of the product, they provide positioning and force balance, allowing for precise positioning between the sealing mold core and the product's curved edge to form a completely sealed cavity. The sealing mold core and supporting mold core effectively wrap the curved edge of the product... The sealing performance of the curved edge is good, effectively preventing glue overflow. In addition, since the sealing mold core and the support mold core can flexibly wrap the curved edge of the product, it can effectively prevent the curved edge of the product from being crushed, which helps to ensure product quality and thus improve the sealing yield. Since the position of the protrusion pressing into the concave surface of the curved edge and the position of the support curved surface pressing into the convex surface of the curved edge overlap along the mold closing direction, the support mold core provides effective support for the curved edge. This allows the curved edge of the product to achieve a balanced force under the pressure of the protrusion pressing in and the appropriate support of the support mold core. Attached Figure Description
[0020] Figure 1 This is an exploded structural diagram of the sealing mold provided in the embodiments of this application.
[0021] Figure 2 yes Figure 1 Partial sectional view of the sealing glue mold after mold closing.
[0022] Figure 3 yes Figure 2 A cross-sectional view of the sealing glue mold core.
[0023] Figure 4 This is a flowchart of the sealing method provided in the embodiments of this application.
[0024] Figure 5 This is a schematic diagram of the terminal structure provided in the embodiments of this application.
[0025] Explanation of main component symbols
[0026] 100 sealing molds
[0027] Upper mold 10
[0028] Lower mold 20
[0029] Receiving slot 21
[0030] Sealing mold core 30
[0031] Sealing groove 31
[0032] First trench wall 32
[0033] Second trench wall 33
[0034] Fourth protrusion 331
[0035] Protrusion 34
[0036] First protrusion 341
[0037] Second protrusion 343
[0038] Third protrusion 345
[0039] Sealing bottom wall 35
[0040] Dispensing head 36
[0041] Glue overflow head 37
[0042] Support core 40
[0043] Supporting surface 41
[0044] Sealing chamber 50
[0045] 60mm light-transmitting panel
[0046] Product 200
[0047] Curved edge 201
[0048] Inner concave surface 202
[0049] 203 convex surface
[0050] End 204
[0051] 300mm sealing layer
[0052] Terminal 1 Detailed Implementation
[0053] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0054] In the description of this application, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, it should be noted that "a plurality of" means two or more, unless otherwise explicitly specified.
[0055] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between the two components; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0056] The following will describe some embodiments of this application in detail with reference to the accompanying drawings.
[0057] Please see Figures 1 to 3This application provides a sealing mold 100, which is used to flexibly wrap the curved edge 201 of a product 200 for sealing, avoiding glue leakage, preventing damage to the curved edge 201 of the product 200, and improving the sealing yield. The curved edge 201 has a concave surface 202, a convex surface 203, and an end 204 connecting the concave surface 202 and the convex surface 203. Sealing specifically refers to the curing of the adhesive between the concave surface 202 and the end 204 of the curved edge 201. In this embodiment, the product 200 can be a display screen formed by assembling a glass panel and display components, and the edge of the product 200 is curved to one side. In other embodiments, the edge of the product 200 can also be other 3D curved shapes.
[0058] The sealing mold 100 includes an upper mold 10, a lower mold 20, a sealing mold core 30, and a support mold core 40.
[0059] The upper mold 10 and lower mold 20 are adapted to fit together so that the product 200 can be positioned between the upper mold 10 and the lower mold 20. At least one of the upper mold 10 and lower mold 20 can be connected to an external drive mechanism (not shown) so that the upper mold 10 and lower mold 20 can close and open under the drive of the external drive mechanism. For example, if the upper mold 10 is connected to the external drive mechanism, the upper mold 10 will move towards or away from the lower mold 20 under the drive of the external drive mechanism to close and open with the lower mold 20. Both the upper mold 10 and lower mold 20 are made of high-performance metal alloy materials, such as magnesium-aluminum alloy or aluminum-titanium alloy.
[0060] The sealing mold core 30 has a sealing groove 31 and a first groove wall 32 and a second groove wall 33 located on both sides of the sealing groove 31. The sealing mold core 30 is roughly rectangular and ring-shaped. The sealing mold core 30 is made of flexible material. The sealing mold core 30 is pressed between the upper mold 10 and the product 200. The side of the first groove wall 32 facing the product 200 has a protrusion 34. The protrusion 34 is set away from the upper mold 10. When the upper mold 10 and the lower mold 20 are closed, the protrusion 34 presses into the concave surface 202 of the curved edge 201 of the product 200. The end 204 of the curved edge 201 extends into the sealing groove 31 and presses against the side of the second groove wall 33 facing the first groove wall 32. The overpressure insertion or overpressure contact can also be understood as the protrusion 34 or the second groove wall 33 undergoing recoverable compression deformation after contacting the concave surface 202 or end 204 of the curved edge 201. The protrusion 34 or the second groove wall 33 achieves close contact and flexible wrapping with the concave surface 202 or end 204 of the curved edge 201 through overpressure insertion or overpressure contact. After the curved edge 201 is overpressure inserted and contacted with the protrusion 34 and the second groove wall 33, it forms a closed sealing chamber 50 with the sealing groove 31. The sealing chamber 50 is used to fill the adhesive. After the adhesive is cured in the sealing chamber 50, it forms a sealing layer 300 that adheres between the concave surface 202 and the end 204 of the curved edge 201, thereby achieving sealing of the curved edge 201.
[0061] The sealing mold core 30 also has a sealing bottom wall 35. The first groove wall 32 and the second groove wall 33 are spaced apart on the sealing bottom wall 35 and located at both ends of the sealing bottom wall 35, respectively. The sealing bottom wall 35, the first groove wall 32 and the second groove wall 33 enclose and form a sealing groove 31. The sealing mold core 30 is injection molded from medium-soft silicone material so that the protrusion 34 and the second groove wall 33 of the sealing mold core 30 can press against and press against the outer concave surface 202 and the end 204 of the curved edge 201, and achieve flexible wrapping of the curved edge 201. The hardness range of the medium-soft silicone material is approximately 15 to 30 degrees.
[0062] The sealing mold core 30 is also equipped with a filling head 36 and an overflow head 37. There can be two filling heads 36 and two overflow heads 37. Both filling heads 36 and overflow heads 37 are connected to the sealing bottom wall 35 and communicate with the sealing groove 31. The filling head 36 is used to introduce the adhesive into the sealing groove 31, and the overflow head 37 is used to draw the adhesive out of the sealing groove 31. The sealing bottom wall 35, filling head 36, overflow head 37, first groove wall 32, protrusion 34, and second groove wall 33 are integrally injection molded. In actual use, the two filling heads 36 and the two overflow heads 37 are arranged alternately. Adhesive is poured into the closed sealing chamber 50 through the filling head 36. When the adhesive fills the entire sealing chamber 50, the excess adhesive overflows from the two overflow heads 37. When adhesive overflows from the overflow head 37, it is confirmed that the sealing chamber 50 is full of adhesive. Both the dispensing head 36 and the overflow head 37 have through holes, which can be straight holes, curved holes, bent holes, or other holes that can fluidly communicate with the sealing groove 31. In other embodiments, the dispensing head 36 and the overflow head 37 can also be disposed in different positions. For example, the dispensing head 36 is disposed on the side of the second groove wall 33 opposite to the first groove wall 32 and communicates with the sealing groove 31, while the overflow head 37 is disposed on the sealing bottom 35.
[0063] In other embodiments, the filling pressure can be used to confirm whether the sealing chamber 50 is full of adhesive. For example, during the filling process, the filling pressure can be observed to confirm whether the sealing chamber 50 is full of adhesive. In this case, the overflow head 37 can be omitted.
[0064] In this embodiment, the protrusion 34 may include a first protrusion 341, a second protrusion 343, and a third protrusion 345. The first protrusion 341 is connected to the first groove wall 32. The second protrusion 343 is connected to the first protrusion 341, and the cross-section of the second protrusion 343 is smaller than that of the first protrusion 341. The cross-section can be roughly understood as a surface perpendicular to the mold closing direction. The third protrusion 345 is connected to the edge of the second protrusion 343 near the second groove wall 33, and the cross-section of the third protrusion 345 is smaller than that of the second protrusion 343. The surfaces of the first protrusion 341, the second protrusion 343, and the third protrusion 345 facing the product 200 are all inclined surfaces. The ends of these inclined surfaces near the second groove wall 33 are all higher than the ends away from the second groove wall 33 relative to the lower mold 20. Figure 3The dotted lines in the diagram are used to distinguish the first protrusion 341, the second protrusion 343, and the third protrusion 345. Thus, by setting the first protrusion 341, the second protrusion 343, and the third protrusion 345 with sequentially decreasing cross-sections, and by setting each of the first protrusion 341, the second protrusion 343, and the third protrusion 345 to have a beveled surface, the third protrusion 345 and the second protrusion 343 can be fitted and pressed into the concave surface 202 of the curved edge 201 through their corresponding beveled surfaces. This allows for a tighter contact with the concave surface 202 of the curved edge 201 and a flexible wrapping of the curved edge 201, achieving precise positioning of the curved edge 201. This effectively improves the sealing performance between the sealing mold core 30 and the product 200, preventing glue overflow.
[0065] In some specific embodiments, the overpressure range between the third protrusion 345 and the curved edge 201 is approximately 0.05mm-0.15mm, for example, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, 0.11mm, 0.12mm, 0.13mm, 0.14mm, 0.15mm, etc. Thus, by limiting the overpressure range between the third protrusion 345 and the curved edge 201, the third protrusion 345 can tightly abut against the curved edge 201. However, when the overpressure range between the third protrusion 345 and the curved edge 201 is less than 0.05mm, the abutment between the third protrusion 345 and the curved edge 201 is not tight enough, resulting in poor sealing between the sealing core 30 and the product 200, which can easily lead to glue overflow. When the overpressure range between the third protrusion 345 and the curved edge 201 is greater than 0.15mm, the pressure of the third protrusion 345 on the curved edge 201 is too large. The curved edge 201 is easily deformed due to the large pressure, resulting in poor sealing of product 200 and affecting the sealing yield of product 200.
[0066] In some specific embodiments, based on the overpressure contact between the third protrusion 345 and the curved edge 201, the overpressure range between the second protrusion 343 and the curved edge 201 is approximately 0.01mm-0.03mm, for example, 0.01mm, 0.015mm, 0.02mm, 0.025mm, 0.03mm, etc. Thus, by limiting the overpressure range between the second protrusion 343 and the curved edge 201, the second protrusion 343 can further enhance the sealing performance of the sealing chamber 50. However, when the overpressure range between the second protrusion 343 and the curved edge 201 is less than 0.01 mm, the overpressure range between the second protrusion 343 and the third protrusion 345 and the curved edge 201 is small, which is not conducive to forming a completely closed sealing chamber 50 and cannot effectively enhance the sealing performance of the sealing chamber 50. In addition, when the overpressure range between the second protrusion 343 and the curved edge 201 is less than 0.01 mm, the sealing performance of the sealing chamber 50 is mainly determined by the third protrusion 345. Since the cross-section of the third protrusion 345 is relatively small, the contact area between the third protrusion 345 and the curved edge 201 is also relatively small. When the pressure inside the sealing chamber 50 is large, it is easy to break open the third protrusion 345, causing glue overflow. When the overpressure range between the second protrusion 343 and the curved edge 201 is greater than 0.03 mm, it indicates that the pressure of the third protrusion 345 on the curved edge 201 is relatively large, which can easily cause the curved edge 201 to deform due to the large pressure.
[0067] The second groove wall 33 protrudes from the first groove wall 32 relative to the sealing bottom wall 35, allowing the side of the second groove wall 33 facing the first groove wall 32 to abut against the end 204 of the curved edge 201. A fourth protrusion 331 is provided on the side of the second groove wall 33 facing the first groove wall 32, and the fourth protrusion 331 is adapted to fit the end of the curved edge 201. The fourth protrusion 331 presses against the portion of the end 204 of the curved edge 201 near the outer convex surface 203. Thus, by providing the aforementioned fourth protrusion 331, the second groove wall 33 can achieve press-fitting against and flexibly wrapping the end 204 of the curved edge 201, thereby improving the sealing performance of the sealing chamber 50.
[0068] In this embodiment, the support mold core 40 is pressed between the product 200 and the lower mold 20, and both ends of the support mold core 40 are embedded in the lower mold 20. The support mold core 40 has a support curved surface 41 with the same bending direction as the outer convex surface 203 of the curved edge 201. The support curved surface 41 presses against the curved edge 201 and supports the curved edge 201, thereby flexibly wrapping the curved edge 201. The press against the curved edge 201 can be understood as the support curved surface 41 undergoing a recoverable compression deformation after pressing against the curved edge 201. The support curved surface 41 achieves close contact with the curved edge 201 through the press against the curved edge 201. The position of the protrusion 34 pressing against the concave surface 202 of the curved edge 201 overlaps with the position of the support surface 41 pressing against the convex surface 203 of the curved edge 201 along the mold closing direction. This allows the support surface 41 and the protrusion 34 to press against the concave surface 202 and the convex surface 203 of the curved edge 201 respectively, thus fully and flexibly wrapping the curved edge 201 and ensuring the force balance of the curved edge 201, preventing it from shifting to the other side due to greater pressure on one side. In addition, by completely embedding the support mold core 40 into the lower mold 20, the support mold core 40 provides effective support for the curved edge 201 through the lower mold 20, preventing deformation of the curved edge 201 when one end of the support mold core 40 is suspended and the protrusion 34 presses against the concave surface 202 of the curved edge 201, which would otherwise cause an imbalance in the force on the curved edge 201.
[0069] In this embodiment, the support mold core 40 is injection molded from a high-hardness silicone material. The hardness range of the high-hardness silicone material is approximately 30 to 40 degrees, which is more conducive to supporting the product 200 and the curved edge 201. In addition, due to external factors such as polishing during the processing of the product 200, inconsistencies in the curvature and size of the curved edge 201 may occur during mass production. By setting the support mold core 40 to be injection molded from a high-hardness silicone material, the support mold core 40 can better fit the curved edge 201, avoiding the situation of uneven force at the bottom of the curved edge 201. This effectively eliminates the situation of uneven force on the upper and lower parts of the curved edge 201 caused by inconsistent curvature and size, thereby avoiding defects such as overflow and overpressure. This allows the product 200 to be accurately and stably pressed between the sealing mold core 30 and the support mold core 40, which is beneficial to improving the sealing yield.
[0070] In some specific embodiments, the overpressure range between the supporting curved surface 41 and the outer convex surface 204 of the curved edge 201 is approximately 0.04mm-0.08mm, for example, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, etc. Thus, by limiting the overpressure range between the supporting curved surface 41 and the outer convex surface 204 of the curved edge 201, the supporting curved surface 41 can tightly support the outer convex surface 204 of the curved edge 201, so that the supporting mold core 40 and the sealing mold core 30 can cooperate to enhance the sealing performance of the sealing chamber 50. However, when the overpressure range between the supporting curved surface 41 and the outer convex surface 204 of the curved edge 201 is less than 0.04 mm, the support of the supporting curved surface 41 on the outer convex surface 204 of the curved edge 201 is not tight enough, resulting in an imbalance between the pressure of the sealing mold core 30 and the pressure of the supporting mold core 40 on the curved edge 201. This affects the overpressure contact between the sealing mold core 30 and the curved edge 201, causing the sealing chamber 50 to be unstable, thereby affecting the sealing performance of the sealing chamber 50 and the sealing yield. When the overpressure range between the supporting curved surface 41 and the outer convex surface 204 of the curved edge 201 is greater than 0.08mm, the pressure of the supporting curved surface 41 on the outer convex surface 204 of the curved edge 201 is relatively large, which can easily cause the curved edge 201 to deform. This leads to an imbalance between the pressure of the sealing mold core 30 and the supporting mold core 40 on the curved edge 201, which in turn affects the overpressure contact between the sealing mold core 30 and the curved edge 201. As a result, the sealing chamber 50 is not stable enough, which affects the sealing performance of the sealing chamber 50 and the sealing yield.
[0071] To better accommodate the support mold core 40 in the lower mold 20 and prevent displacement of the support mold core 40, in this embodiment, a receiving groove 21 adapted to the support mold core 40 is provided on the side of the lower mold 20 facing the upper mold 10. The support mold core 40 is fitted into the receiving groove 21. Thus, by providing the receiving groove 21 on the lower mold 20, the support mold core 40 is embedded within the lower mold 20 and is confined within the receiving groove 21, making it less prone to displacement. This results in high positioning accuracy of the support mold core 40 for the curved edge 201, which is beneficial for improving the sealing yield. The support mold core 40 can be glued into the receiving groove 21 of the lower mold 20.
[0072] In this embodiment, the sealing mold 100 further includes a light-transmitting plate 60. The light-transmitting plate 60 can be made of materials with high light transmittance, such as glass, translucent stone, acrylic, or silicone. The light-transmitting plate 60 is generally plate-shaped and is connected to the sealing mold core 30 and located between the upper mold 10 and the sealing mold core 30. The light-transmitting plate 60 allows light to enter and irradiate the sealing groove 31 of the sealing mold core 30. Thus, by setting the aforementioned light-transmitting plate 60, firstly, the connection between the light-transmitting plate 60 and the sealing mold core 30 provides support for the flexible sealing mold core 30, which helps the sealing mold core 30 to accurately press against the curved edge 201, improving positioning accuracy; secondly, light can pass through the light-transmitting plate 60 to irradiate the sealing chamber 50 of the sealing mold core 30, so that the colloid in the sealing chamber 50 is photocured, improving the curing efficiency of the colloid and thus improving the sealing efficiency. Both the dispensing head 36 and the overflow head 37 can be inserted through the light-transmitting plate 60, and the sealing bottom wall 35 of the sealing mold core 30 is connected to the light-transmitting plate 60. Understandably, the upper mold 10 is roughly annular, and the upper mold 10 is connected to the edge of the light-transmitting plate 60 while avoiding the connection between the light-transmitting plate 60 and the sealing mold core 30, so that light can pass through the light-transmitting plate 60 and illuminate the sealing chamber 50 of the sealing mold core 30.
[0073] In other embodiments, the light-transmitting plate 60 may also be annular and adapted to the sealing core 30.
[0074] The sealing mold 100 provided in this application embodiment undergoes the following process in actual use:
[0075] First, the sealing mold core 30 is connected to the light-transmitting plate 60. The sealing mold core 30 can be injection molded together with the light-transmitting plate 60, or the sealing mold core 30 can be glued to the light-transmitting plate 60, so that the filling head 36 and the overflow head 37 both pass through the light-transmitting plate 60. Then, the side of the light-transmitting plate 60 away from the sealing mold core 30 is connected to the upper mold 10. The light-transmitting plate 60 can be glued to the upper mold 10 by screws or glue. Then, the supporting mold core 40 is embedded in the receiving groove 21 of the lower mold 20 by glued connection, so as to realize the assembly of the sealing mold 100.
[0076] Then, the product 200 is placed on the support mold core 40, and the curved edge 201 of the product 200 is adapted to the support surface 41 of the support mold core 40.
[0077] Next, the upper mold 10, the light-transmitting plate 60, and the sealing mold core 30 are driven to move synchronously towards the lower mold 20, so that the upper mold 10 and the lower mold 20 are closed, and the sealing mold core 30 and the supporting mold core 40 are pressed against the concave surface 202, the convex surface 203, and the end 204 of the curved edge 201 of the product 200, and the sealing mold core 30 and the curved edge 201 are enclosed to form a sealing chamber 50. The upper mold 10 and the lower mold 20 can also be locked together by a handle (not shown). The third protrusion 345 of the protrusion 34 can be pressed against the concave surface 202 of the curved edge 201 by 0.1 mm, the second protrusion 343 of the protrusion 34 can be pressed against the concave surface 202 of the curved edge 201 by 0.02 mm, and the supporting curved surface 41 can be pressed against the convex surface 203 of the curved edge 201 by 0.05 mm.
[0078] Next, the adhesive is injected into the sealing chamber 50 through the two dispensing heads 36 until adhesive overflows from both overflow heads 37, at which point the dispensing process is stopped. The dispensing pressure can be 0.3 MPa, and the diameter of the dispensing needle (not shown in the figure) used for dispensing can be 0.5 mm.
[0079] Next, light is emitted towards the light-transmitting plate 60, allowing the light to pass through the light-transmitting plate 60 and irradiate the sealing chamber 50 inside the sealing mold core 30, causing the adhesive inside the sealing chamber 50 to undergo photocuring until the adhesive is completely cured. The sealed mold 100 after adhesive filling can be placed inside a light box (not shown), where the light intensity can be 500±50 mw / cm². 2 The irradiation time can be 10 minutes.
[0080] Finally, the upper mold 10, the light-transmitting plate 60, and the sealing mold core 30 are driven to move away from the lower mold 20 simultaneously, so that the upper mold 10 and the lower mold 20 open, and the sealed product 200 is removed from the lower mold 20.
[0081] In other embodiments, after the sealing mold 100 is assembled, the upper mold 10 and the lower mold 20 can be swapped, i.e., the upper mold 10 is below and the lower mold 20 is above. The lower mold 20 is connected to an external drive mechanism, the product 200 is placed on the sealing mold core 30, and the curved edge 201 extends into the sealing groove 31. The lower mold 20 and the support mold core 40 are driven to move synchronously closer to the upper mold 10, so that the lower mold 20 and the upper mold 10 are closed, and the sealing mold core 30 and the support mold core 40 are both pressed against the curved edge 201 of the product 200, and the sealing mold core 30 and the curved edge 201 are enclosed to form a sealing chamber 50.
[0082] The sealing mold 100 provided in this embodiment achieves flexible wrapping of the product 200 by pressing against the concave surface 202 and end 204 of the curved edge 201 of the product 200 through the protrusion 34 of the first groove wall 32 and the second groove wall 33 of the sealing mold core 30, and by pressing against the convex surface 203 of the curved edge 201 of the product 200 through the supporting curved surface 41 of the supporting mold core 40. Since the sealing mold core 30 and the supporting mold core 40 can flexibly wrap the curved edge 201 of the product 200, they provide positioning and force balance for the curved edge 201 of the product 200, thereby enabling precise positioning between the sealing mold core 30 and the curved edge 201 of the product 200 to form a completely closed sealing chamber 50. The sealing mold core 30 and the supporting mold core 40 provide... The curved edge 201 of product 200 has good sealing performance, effectively preventing glue overflow. In addition, since the sealing mold core 30 and the supporting mold core 40 can flexibly wrap the curved edge 201 of product 200, it effectively prevents the curved edge 201 of product 200 from being crushed, which helps to ensure the quality of product 200 and thus improves the sealing yield. Since the position of the protrusion 34 pressing into the concave surface 202 of the curved edge 201 and the position of the supporting curved surface 41 pressing into the convex surface 203 of the curved edge 201 overlap along the mold closing direction, the supporting mold core 40 provides effective support for the curved edge 201. Thus, the curved edge 201 of product 200 achieves a balanced force under the pressure of the protrusion 34 and the appropriate support of the supporting mold core 40.
[0083] The sealing mold 100 provided in this application embodiment further provides support for the flexible sealing mold 30 by means of a light-transmitting plate 60 connected to the sealing mold core 30. This facilitates the accurate pressure of the sealing mold core 30 against the curved edge 201, improving positioning accuracy. Light can pass through the light-transmitting plate 60 to irradiate the sealing chamber 50 of the sealing mold core 30, so that the colloid in the sealing chamber 50 is photocured, improving the curing efficiency of the colloid and thus improving the sealing efficiency.
[0084] Please see Figure 4 This application also provides a sealing method for sealing a curved edge 201 of a product 200. The curved edge 201 has a concave surface 202, a convex surface 203, and an end 204 connecting the concave surface 202 and the convex surface 203. The sealing method includes the following steps S11 to S15.
[0085] Step S11: Prepare the above-mentioned sealing mold 100.
[0086] Step S12: Place the product 200 into the upper mold 10 and the lower mold 20, and position the curved edge 201 of the product 200 between the sealing mold core 30 and the supporting mold core 40.
[0087] In step S13, the upper mold 10 and the lower mold 20 are closed, so that the protrusion 34 of the sealing mold core 30 is pressed into the concave surface 202 of the curved edge 201, the second groove wall 33 of the sealing mold core 30 is pressed against the end 204 of the curved edge 201, the supporting curved surface 41 of the supporting mold core 40 is pressed against the outer convex surface 203 of the curved edge 201, and the position of the protrusion 34 being pressed against the concave surface 202 of the curved edge 201 and the position of the supporting curved surface 41 being pressed against the outer convex surface 203 of the curved edge 201 overlaps along the mold closing method.
[0088] Step S14: Fill the sealing cavity 50 formed by the sealing groove 31 and the curved edge 201 with adhesive, and allow the adhesive to solidify and form a connection between the end 204 of the curved edge 201 and the concave surface 202 of the curved edge 201.
[0089] Step S15: Open the upper mold 10 and the lower mold 20 to remove the sealed product 200.
[0090] Specifically, in step S11, the sealing mold core 30 is connected to the light-transmitting plate 60, so that both the dispensing head 36 and the overflow head 37 pass through the light-transmitting plate 60; then, the side of the light-transmitting plate 60 away from the sealing mold core 30 is connected to the upper mold 10; then, the supporting mold core 40 is embedded in the receiving groove 21 of the lower mold 20 by adhesive bonding, thus completing the preparation of the sealing mold 100. In step S12, the product 200 can be placed on the supporting mold core 40. In step S13, the upper mold 10, the light-transmitting plate 60, and the sealing mold core 30 are driven to move synchronously towards the lower mold 20, causing the upper mold 10 and the lower mold 20 to close. The sealing mold core 30 and the supporting mold core 40 then press against the concave surface 202, convex surface 203, and end 204 of the curved edge 201 of the product 200, forming a sealing chamber 50 by the sealing mold core 30 and the curved edge 201. In step S14, the injection pressure of the adhesive can be 0.3 MPa, and the diameter of the injection needle used can be 0.5 mm. In step S15, the sealed mold 100 after injection can be placed in a light box with a light intensity of 500 ± 50 mw / cm². 2 The irradiation time can be 10 minutes.
[0091] The sealing method provided in this application embodiment uses the protrusion 34 of the first groove wall 32 and the second groove wall 33 of the sealing mold 100 to press against the concave surface 202 and end 204 of the curved edge 201 of the product 200, and the support curved surface 41 of the support mold 40 to press against the convex surface 203 of the curved edge 201 of the product 200, thereby achieving flexible wrapping of the curved edge 201 of the product 200. Since the sealing mold 30 and the support mold 40 can flexibly wrap the curved edge 201 of the product 200, they can position and balance the force on the curved edge 201 of the product 200, thereby enabling precise positioning between the sealing mold 30 and the curved edge 201 of the product 200 to form a completely closed sealing chamber 50. The support mold core 40 provides good sealing for the curved edge 201 of the product 200, effectively preventing glue overflow. Furthermore, since the sealing mold core 30 and the support mold core 40 can flexibly wrap around the curved edge 201 of the product 200, it effectively prevents damage to the curved edge 201 of the product 200, thus ensuring product quality and improving sealing yield. Because the position of the protrusion 34 pressing against the concave surface 202 of the curved edge 201 overlaps with the position of the support curved surface 41 pressing against the convex surface 203 of the curved edge 201 along the mold closing direction, the support mold core 40 provides effective support for the curved edge 201. This allows the curved edge 201 of the product 200 to achieve balanced force under the pressure of the protrusion 34 and the appropriate support of the support mold core 40.
[0092] Please see Figure 5 This application also provides a terminal 1, which includes a display screen and an encapsulation layer 300 (see...). Figure 2 The display screen can be understood as product 200 as described above. The encapsulation layer 300 is filled with adhesive through the encapsulation mold 100 and then photocured to solidify the adhesive between the concave surface 202 and the end 204 of the curved edge 201 of the display screen. The terminal 1 can be an electronic device such as a mobile phone, tablet computer, or smartwatch.
[0093] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within this application.
[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.
Claims
1. A sealing mold for sealing the curved edge of a product, said curved edge having an inner concave surface and an outer convex surface, characterized in that, include: The upper and lower molds are mold-fitting, and the product is located between the upper and lower molds; A sealing mold core has a sealing groove and a first groove wall and a second groove wall located on both sides of the sealing groove. The sealing mold core is pressed between the upper mold and the product. The first groove wall has a protrusion on the side facing the product. The protrusion is pressed into the concave surface of the curved edge. The end of the curved edge extends into the sealing groove and presses against the side of the second groove wall facing the first groove wall. A support mold core is pressed between the product and the lower mold, with both ends of the support mold core embedded in the lower mold. The support mold core has a support curved surface with the same bending direction as the outer convex surface of the curved edge. The support curved surface presses against the outer convex surface of the curved edge. The position where the protrusion presses against the inner concave surface of the curved edge overlaps with the position where the support curved surface presses against the outer convex surface of the curved edge along the mold closing direction.
2. The sealing mold as described in claim 1, characterized in that, The protrusion includes a first protrusion, a second protrusion, and a third protrusion. The first protrusion is connected to the first groove wall. The second protrusion is connected to the first protrusion and the cross-section of the second protrusion is smaller than that of the first protrusion. The third protrusion is connected to the edge of the second protrusion near the second groove wall and the cross-section of the third protrusion is smaller than that of the second protrusion. The surfaces of the first protrusion facing the product, the surfaces of the second protrusion facing the product, and the surfaces of the third protrusion facing the product are all inclined surfaces.
3. The sealing mold as described in claim 2, characterized in that, The overpressure range between the third protrusion and the concave surface of the curved edge is 0.05mm-0.15mm, and the overpressure range between the second protrusion and the concave surface of the curved edge is 0.01mm-0.03mm.
4. The sealing mold as described in claim 1, characterized in that, The second groove wall has a fourth protrusion on the side facing the first groove wall, and the fourth protrusion presses against the part of the curved edge near the outer convex surface.
5. The sealing mold as described in claim 1, characterized in that, The overpressure range between the supporting curved surface and the convex surface of the curved edge is 0.04mm-0.08mm.
6. The sealing mold as described in claim 1, characterized in that, The sealing mold also includes a light-transmitting plate, which is connected to the sealing mold core and located between the upper mold and the sealing mold core. The light-transmitting plate allows light to enter and illuminate the sealing mold core.
7. The sealing mold as described in claim 6, characterized in that, The sealing mold core is also provided with a sealing bottom wall, which is connected to the light-transmitting plate. The first groove wall and the second groove wall are spaced apart on the sealing bottom wall, and the sealing bottom wall, the first groove wall and the second groove wall form the sealing groove.
8. The sealing mold as described in claim 7, characterized in that, The sealing mold core is also provided with a filling head and an overflow head. The filling head and the overflow head are both connected to the bottom wall of the sealing mold and are both connected to the sealing groove. The filling head and the overflow head are both inserted through the light-transmitting plate. The filling head is used to introduce the glue into the sealing groove, and the overflow head is used to draw the glue out of the sealing groove.
9. A sealing method for sealing the curved edge of a product, said curved edge having an inner concave surface and an outer convex surface, characterized in that, include: Prepare a sealing mold as described in any one of claims 1 to 8; The product is placed in the upper mold and the lower mold, with the curved edge of the product positioned between the sealing mold core and the supporting mold core; The upper mold and the lower mold are closed, such that the protrusion of the sealing mold core is pressed into the concave surface of the curved edge, the second groove wall of the sealing mold core is pressed against the end of the curved edge, the supporting curved surface of the supporting mold core is pressed against the convex surface of the curved edge, and the position where the protrusion is pressed into the concave surface of the curved edge and the position where the supporting curved surface is pressed against the convex surface of the curved edge overlap along the mold closing direction; A colloid is poured into the sealing chamber formed by the sealing groove and the curved edge, and the colloid is cured and formed to connect the end of the curved edge and the concave surface of the curved edge. The upper mold and the lower mold are opened to remove the sealed product.
10. A terminal, characterized in that, It includes a display screen and a sealing layer, wherein the sealing layer is formed on the curved edge of the display screen by applying adhesive using a sealing mold according to any one of claims 1 to 8.