Rubber coating mold of plastic panel

Abstract

The utility model relates to the technical field of stamping dies, in particular to a plastic panel rubber coating die which comprises a lower die base, a fixing structure arranged on the lower die base and used for fixing a plastic panel and an upper die base used for being combined with the lower die base to form a die cavity. A positioning structure used for preventing errors in mold closing of the lower mold base and the upper mold base is arranged on the opposite faces of the lower mold base and the upper mold base, a casting cavity is formed in the upper mold base, the width of the casting cavity is larger than that of the fixing structure, the plastic panel is fixed through the fixing structure, then silica gel is placed on the plastic panel, and then the upper mold base is subjected to oil pressing. The lower die base and the upper die base are closed, the silica gel extends along the casting cavity after being extruded, and the silica gel wraps the two sides and the upper surface of the plastic panel, so that a worker can machine the edge covering silica gel with the two sides attached to the two sides of the plastic panel in a one-time mode, the machining steps of the worker are reduced, and the machining efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of stamping dies, in particular to a plastic panel encapsulating die. BACKGROUND

[0002] A plastic panel is applied to a protective panel such as a wireless charger external panel, and a layer of silica gel is generally formed on the plastic panel.

[0003] A conventional processing method is to directly oil-press form a composite panel by placing the plastic panel and the silica gel in a die, and then punching and processing the related shape, a composite panel structure capable of improving the stability of the plastic panel and the silica gel is provided, characterized in that the silica gel has two sides extending out of the edges of the plastic panel, so that the plastic panel is similar to being embedded in the silica gel, thereby improving the overall stability of the plastic panel and the silica gel, but the existing stamping process can only make the silica gel adhere to one side of the plastic panel, and the other two sides need to be additionally spliced, so that the processing process is too complicated, and therefore a plastic panel encapsulating die is needed. CONTENT OF THE INVENTION

[0004] In view of the deficiencies of the prior art, the application aims to provide a plastic panel encapsulating die to solve the technical problem of the complicated processing process of the silica gel with two sides extending out of the edges of the plastic panel in the prior art.

[0005] The above-mentioned purpose of the application is achieved by the following technical scheme: a plastic panel encapsulating die, comprising a lower die seat, a fixing structure arranged on the lower die seat for fixing a plastic panel, and an upper die seat for combining with the lower die seat to form a die cavity, the lower die seat and the upper die seat are provided with positioning structures on the opposite surfaces for preventing errors in the combination of the lower die seat and the upper die seat, the upper die seat is provided with a casting cavity, and the width of the casting cavity is greater than that of the fixing structure.

[0006] Further, the fixing structure is a bottom supporting film, the bottom supporting film is a PET film with adhesive surface, the surface area of the bottom supporting film is greater than that of the plastic panel, and the bottom supporting film is provided with a connecting port for connecting the positioning structure.

[0007] Further, the positioning structure comprises a plurality of positioning holes uniformly arranged around the casting cavity and a plurality of positioning columns fixedly arranged on the lower die seat corresponding to the positioning holes.

[0008] By adopting the technical scheme, the connecting port of the bottoming film is aligned with the positioning column, and then the bottoming film is adhered to the lower mold base, the plastic panel is placed on the bottoming film, the bottoming film temporarily fixes the plastic panel, then the silica gel is placed on the plastic panel, the upper mold base is pressed by the oil pressure, the lower mold base and the upper mold base are closed, the silica gel is extruded and extends along the casting cavity, so that the silica gel wraps the two sides and the upper surface of the plastic panel, so that the worker can process the two sides of the plastic panel with the edge wrapping silica gel on the two sides at one time, the processing steps of the worker are reduced, and the processing efficiency is improved, and after the processing is completed, the bottoming film of the plastic panel bottom is only torn off, the bottoming film made of PET film has moderate adhesion, so that the plastic panel can be adhered to the bottoming film, and the bottoming film can be peeled off from the plastic panel under external force, and no residual glue is left on the plastic panel, and the setting of the bottoming film makes the worker more convenient to disassemble and assemble the plastic panel.

[0009] Further, the lower mold base is provided with a switching structure for prolonging the service life of the lower mold base.

[0010] Further, the switching structure comprises a receiving groove opened in the lower mold base and a replacement plate placed in the receiving groove for mounting a fixing structure, and the positioning structure is arranged in the receiving groove, and the replacement plate is provided with a connecting hole for connecting the positioning structure.

[0011] By adopting the technical scheme, although the setting of the bottoming film can make the worker more convenient to disassemble and assemble the plastic panel, but the adhesive substance on the bottom of the bottoming film will be more or less adhered to the lower mold base when the mold is closed each time, and the number is small, which will not have any effect, but after a few times, the lower mold base will be very sticky, so that the bottoming film will be adhered to the lower mold base and difficult to separate during demolding, so that the service life of the lower mold base is reduced, and the setting of the switching structure solves this technical problem, when the adhesion on the lower mold base is very high due to long-time use of the lower mold base, the replacement plate can be disassembled from the receiving groove, a new replacement plate is placed in the receiving groove, and the lower mold base can be used continuously, so that the whole lower mold base does not need to be replaced, thereby prolonging the service life of the lower mold base.

[0012] Further, the surface area of the replacement plate is greater than the surface area of the casting cavity.

[0013] By adopting the technical scheme, the situation that the silica gel is extruded into the gap between the replacement plate and the receiving groove during the oil pressure closing of the mold can be prevented.

[0014] Further, the lower mold base is provided with a locking structure for fixing the replacement plate.

[0015] Further, the locking structure comprises a locking threaded hole opened through the lower die seat from the outside to the inside, a connecting threaded hole opened on the side wall of the replacement plate opposite to the locking threaded hole, and a locking stud threaded through the lower die seat to connect the replacement plate.

[0016] By adopting the above technical scheme, although the setting of the replacement plate prolongs the service life of the lower die seat, since the supporting film has viscosity, it is possible that the replacement plate is moved together with the supporting film when a worker disassembles the processed plastic panel, so that the worker needs to reinstall the replacement plate into the storage groove again, which is very inconvenient. The setting of the locking structure solves this technical problem. When the lower die seat is normally used, the locking stud only needs to be aligned with the locking threaded hole and then screwed in to threadedly connect the replacement plate to the locking stud, so as to prevent the replacement plate from separating from the storage groove and improve the stability of the replacement plate. When the replacement plate needs to be replaced, the locking stud only needs to be screwed out.

[0017] In summary, the present application has at least one of the following beneficial technical effects:

[0018] 1. By setting the lower die seat, the upper die seat, the fixing structure, and the positioning structure, the connecting port of the supporting film is aligned with the positioning column, and then the supporting film is adhered to the lower die seat. The plastic panel is placed on the supporting film, so that the supporting film temporarily fixes the plastic panel. Then, the silica gel is placed on the plastic panel. Then, the oil pressure upper die seat is used to make the lower die seat and the upper die seat close. After the silica gel is extruded, it extends along the casting cavity, so that the silica gel wraps the two sides and the upper surface of the plastic panel. Thus, the worker can process the two sides of the plastic panel with the wrapping silica gel on the two sides at one time, reducing the processing steps of the worker and improving the processing efficiency. After processing, the supporting film on the bottom surface of the plastic panel can be torn off. The supporting film made of PET film has moderate viscosity, so that the plastic panel can be adhered to the supporting film and can be peeled off from the plastic panel under external force. At the same time, no residual glue is left on the plastic panel. The setting of the supporting film makes it more convenient for the worker to disassemble and assemble the plastic panel. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic view of the overall structure of the embodiment;

[0020] Figure 2 is another view of the overall structure of the embodiment;

[0021] Figure 3 is Figure 1 the structure view of the replacement plate hidden in the embodiment.

[0022] Reference signs: 1, lower die holder; 2, bottom support film; 3, upper die holder; 30, casting cavity; 4, positioning structure; 40, positioning hole; 41, positioning column; 5, switching structure; 50, storage groove; 51, replacement plate; 6, locking structure; 60, locking threaded hole; 61, locking stud. DETAILED DESCRIPTION

[0023] The application will be further described in detail below with reference to the accompanying drawings.

[0024] Embodiments, with reference to Figure 1 , Figure 2 and Figure 3 , a plastic panel encapsulation mold, comprising a lower die holder 1, a fixing device specially used for stabilizing the plastic panel installed on the lower die holder 1, and an upper die holder 3 which can cooperate with the lower die holder 1 to form a complete mold cavity. On the surfaces of the lower die holder 1 and the upper die holder 3 facing each other, a positioning structure 4 is arranged, and the positioning structure 4 is arranged to prevent deviation of the lower die holder 1 and the upper die holder 3 during the clamping process, and to ensure accurate alignment of the mold.

[0025] The upper die holder 3 is internally provided with a casting cavity 30, and the width of the casting cavity 30 is wider than that of the fixing device to adapt to various needs in the production process. The fixing device is a bottom support film 2 made of PET film material with certain adhesion on the surface, which is not only light and thin but also durable. The surface area of the bottom support film 2 is larger than that of the plastic panel to be processed, which ensures that the plastic panel can be installed on the bottom support film 2. In addition, the bottom support film 2 is also provided with a connecting port, and the connecting port is arranged to connect the bottom support film 2 with the positioning structure 4, thereby further stabilizing the mold structure.

[0026] The positioning structure 4 is composed of two parts: one is a plurality of positioning holes 40 uniformly distributed on the edge of the casting cavity 30, and the other is a positioning column 41 fixedly installed on the lower die holder 1 corresponding to the positioning holes 40. During operation, the worker only needs to accurately align the connecting port of the bottom support film 2 with the positioning column 41, and then firmly paste the bottom support film 2 on the lower die holder 1 by using the adhesion of the bottom support film 2. Then, the plastic panel to be processed is gently placed on the bottom support film 2, at this time, the bottom support film 2 temporarily fixes the plastic panel by virtue of its moderate adhesion, providing a stable basis for the subsequent processing steps.

[0027] Subsequently, the silica gel is placed on the plastic panel, and the upper die holder 3 is slowly lowered by oil pressure driving to tightly clamp with the lower die holder 1. Under the action of the huge pressure, the silica gel extends along the shape of the casting cavity 30, not only completely covering the upper surface of the plastic panel, but also ingeniously wrapping the edges on both sides, forming an integrated edge-sealed silica gel structure. This innovative design greatly simplifies the production process, enabling the worker to complete the complex encapsulation operation at one time, significantly improving the processing efficiency and product quality.

[0028] After processing, the finished product can be easily removed simply by peeling off the bottom support film 2 from the bottom of the plastic panel. Due to its unique material properties, the PET film has moderate adhesion, ensuring the stable fixation of the plastic panel during processing while also allowing it to be easily peeled off from the surface of the plastic panel under external force, leaving no residue and ensuring the cleanliness and aesthetics of the product. The application of the bottom support film 2 not only simplifies the assembly and disassembly process of the plastic panel but also greatly improves the convenience and flexibility of production operations.

[0029] Although the bottom support film 2 makes it easier for workers to assemble and disassemble plastic panels, the adhesive material on the bottom surface of the bottom support film 2 will inevitably stick to the lower mold base 1 to some extent after each mold closing under pressure. A few times this has no effect, but after repeated use, the lower mold base 1 becomes very sticky, causing the bottom support film 2 to stick to the lower mold base 1 and be difficult to remove during demolding, thus reducing the service life of the lower mold base 1. To solve this technical problem, this embodiment provides a switching structure 5 on the lower mold base 1 to improve its service life. The switching structure 5 includes a storage groove 50 formed on the lower mold base 1 and a fixing structure placed in the storage groove 50 for installation. The replacement plate 51 and the positioning structure 4 are set in the storage groove 50. The replacement plate 51 has a connecting hole for connecting the positioning structure 4. By setting the switching structure 5, when the lower mold base 1 becomes very sticky after long-term use, the replacement plate 51 can be removed from the storage groove. The new replacement plate 51 is aligned with the positioning post 41 and placed into the storage groove 50, so the lower mold base 1 can continue to be used. This way, it is not necessary to replace the entire lower mold base 1, thereby improving the service life of the lower mold base 1. In addition, the surface area of ​​the replacement plate 51 is larger than the surface area of ​​the casting cavity 30, which can prevent the silicone from being squeezed into the gap between the replacement plate 51 and the storage groove 50 during hydraulic mold closing.

[0030] Although the setting of the replacement plate 51 prolongs the service life of the lower mold base 1, but due to the adhesion of the bottom supporting film 2, it is possible that the replacement plate 51 is adhered together with the bottom supporting film 2 when the worker disassembles the finished plastic panel, causing the subsequent worker to need to reinstall the replacement plate 51 back into the storage groove 50, which is very inconvenient. In order to solve this technical problem, the locking structure 6 for fixing the replacement plate 51 is arranged on one side of the lower mold base 1, the locking structure 6 includes a locking threaded hole 60 which is opened through the outside of the lower mold base 1 to the inside of the lower mold base 1, a connecting threaded hole which is opened on the side wall of the replacement plate 51 and is aligned with the locking threaded hole 60, and a locking stud 61 which is screwed through the lower mold base 1 to connect the replacement plate 51. When the lower mold base 1 is normally used, only the locking stud 61 needs to be aligned with the locking threaded hole 60, and then screwed in to make the locking stud 61 threadedly connected with the replacement plate 51, so as to prevent the replacement plate 51 from being separated from the storage groove 50, thereby improving the stability of the replacement plate 51. When the replacement plate 51 needs to be replaced, only the locking stud 61 needs to be screwed out.

[0031] Specific implementation process: The bottom supporting film 2 is adhered to the lower mold base 1, then the plastic panel is placed on the bottom supporting film 2, so that the bottom supporting film 2 temporarily fixes the plastic panel, then the silica gel is placed on the plastic panel, and then the oil pressure upper mold base 3 is used to make the lower mold base 1 and the upper mold base 3 close, so that the silica gel is extruded along the casting cavity 30 to make the silica gel wrap the two sides and the upper surface of the plastic panel, forming a plastic panel with edge wrapping on both sides. After processing is completed, the plastic panel is disassembled, and then the bottom supporting film 2 on the bottom surface of the plastic panel is torn off.

[0032] When the adhesion on the lower mold base 1 is very high after long-term use of the lower mold base 1, the locking stud 61 can be screwed out first, then the replacement plate 51 is disassembled, then a new replacement plate 51 is replaced, and then the locking stud 61 is aligned with the locking threaded hole 60 and screwed in, so that the locking stud 61 fixes the replacement plate 51.

[0033] The embodiments of the specific implementation are the preferred embodiments of the application, and are not limited to the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. An encapsulation mold for a plastic panel, characterized by, The utility model relates to a plastic panel injection mould, which comprises a lower mould base (1), a fixing structure arranged on the lower mould base (1) for fixing a plastic panel, and an upper mould base (3) for forming a mould cavity in combination with the lower mould base (1), wherein the lower mould base (1) and the upper mould base (3) are provided with positioning structures (4) on the opposite surfaces thereof for preventing errors in the combination of the lower mould base (1) and the upper mould base (3), the upper mould base (3) is provided with a casting cavity (30), and the width of the casting cavity (30) is greater than that of the fixing structure. The fixing structure is a bottom supporting film (2), the bottom supporting film (2) is a PET film with adhesive surface, the surface area of the bottom supporting film (2) is greater than that of the plastic panel, and the bottom supporting film (2) is provided with connecting ports for connecting the positioning structures (4). The positioning structures (4) comprise a plurality of positioning holes (40) arranged uniformly around the periphery of the casting cavity (30) and a plurality of positioning columns (41) arranged on the lower mould base (1) correspondingly to the positioning holes (40).

2. The encapsulation mold for plastic faceplates according to claim 1, characterized in that The lower mould base (1) is provided with a switching structure (5) for prolonging the service life of the lower mould base (1).

3. The encapsulation mold for plastic faceplates according to claim 2, wherein, The switching structure (5) comprises a receiving groove (50) arranged on the lower mould base (1), a replacement plate (51) arranged in the receiving groove (50) for fixing the fixing structure, and the positioning structures (4) arranged in the receiving groove (50), wherein the replacement plate (51) is provided with connecting holes for connecting the positioning structures (4).

4. The encapsulation mold for plastic faceplates according to claim 3, wherein The surface area of the replacement plate (51) is greater than that of the casting cavity (30).

5. The encapsulation mold for plastic faceplates according to claim 3, wherein, One side of the lower mould base (1) is provided with a locking structure (6) for fixing the replacement plate (51).

6. The encapsulation mold for plastic faceplates according to claim 5, wherein, The locking structure (6) comprises a locking screw hole (60) arranged on the outer side of the lower mould base (1) and extending through the lower mould base (1) to the inner side thereof, a connecting screw hole arranged on the side wall of the replacement plate (51) and aligned with the locking screw hole (60), and a locking screw column (61) arranged through the locking screw hole (60) and threadedly connected with the replacement plate (51) through the lower mould base (1).

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