Coated sound box for vehicle and production process and equipment thereof

Abstract

The invention relates to the technical field of automobile part production, in particular to an automobile coating type loudspeaker box and a production process and equipment thereof.The loudspeaker box comprises a framework (G) and a skin (P), the framework (G) is provided with functional holes (G1), the skin (P) corresponds to the framework functional holes (G1) of the framework (G) and is provided with skin functional holes (P1) with the same size and position, the skin functional holes (P1) are accurately aligned with the framework (G), and the functional holes (G1) are communicated with the functional holes (G1). The production technology comprises a preparation step and an eight-step technological process, and the equipment comprises a tool (M) provided with a special functional needle (M1). According to the coated sound box for the vehicle, the design is scientific, the structure is novel, the appearance is attractive, the through holes are accurately manufactured, the requirements for light transmission, sound transmission and ventilation are met, unique visual and touch feelings are added to the interior of the vehicle, the production process is scientific and reasonable, tool equipment is simple in structure, many molds and equipment are saved, the production efficiency is improved, consumption is reduced, and economic benefits are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile interior parts production, and in particular to a vehicle-used wrapped speaker box and a production process and equipment thereof. Background Art

[0002] In existing automotive design, perforated areas of the interior are often created using injection molding, creating a variety of through-holes that not only meet the requirements for light, sound, and air permeability, but also add a unique visual and tactile experience to the vehicle interior. However, in practical applications, components with these functions, such as car speakers, present numerous challenges. To prevent negatively impacting the passenger's visual experience, designers often implement additional masking measures in highly visible and visible areas. Common masking solutions include fabric wrapping, metal mesh covers, and built-in mesh fabrics, but these methods often fail to completely address issues such as rough surfaces, scratchiness, and poor visual quality. Furthermore, these masking measures can sometimes compromise the sound transmission of the through-holes, thereby diminishing the overall user experience. Consequently, designers and engineers are constantly searching for more advanced and aesthetically pleasing solutions that enhance the interior's aesthetics and user comfort while maintaining functionality. Summary of the Invention

[0003] The purpose of the present invention is to solve the above-mentioned practical technical problems and provide a vehicle-use covered speaker. Another purpose of the present invention is to provide a production process and equipment for the vehicle-use covered speaker to solve the above-mentioned practical technical problems.

[0004] The technical solutions provided by the present invention are as follows:

[0005] A covered car speaker, wherein the sound hole area of the speaker is provided with a sound hole, the sound hole is a through hole, the aperture of the through hole is 2.5mm-3mm, the vertical spacing between adjacent through holes is 2mm-3mm, and the horizontal spacing is 2mm-3mm. The speaker comprises a frame and a skin, the frame is provided with functional holes to form the sound hole area of the frame, the skin is provided with skin functional holes of the same size and position corresponding to the skeleton functional holes of the frame to form the sound hole area of the skin, and a concave-convex positioning structure 2 is further provided on the periphery of the sound hole area of the skin, the skeleton functional holes of the skeleton and the skin functional holes of the skin are both through holes, the skin covers the frame and is glued and fixed to the frame as a whole, the skeleton functional holes of the skeleton and the skin functional holes of the skin are precisely positioned and aligned to form the sound hole of the speaker.

[0006] A production tool for a vehicle-use covered speaker, characterized in that the tool includes functional needles, the diameter, spacing and layout of the functional needles completely correspond to the diameter, spacing and layout of the surface functional holes of the speaker surface, and a concave-convex positioning structure 1 is provided corresponding to the concave-convex positioning structure 2 of the speaker surface.

[0007] A production process for a vehicle-use covered speaker includes the following steps:

[0008] 1. Preparation steps:

[0009] a. Injection molding skeleton, according to the shape of the speaker design, set the skeleton its outline, through the injection molding equipment, make the skeleton, according to the design requirements of the speaker sound hole, set the skeleton skeleton function hole, the skeleton function hole is a through hole, and then injection molding to form a semi-finished skeleton;

[0010] b. Make a tooling, which corresponds to the epidermal functional holes of the epidermis and is provided with functional needles. The diameter, spacing and layout of the functional needles completely correspond to the epidermal functional holes of the epidermis, and are provided with a concave-convex positioning structure 1 corresponding to the concave-convex positioning structure 2 of the epidermis to form a needle plate.

[0011] c. Make the lower and upper molds of the leather-wrapped hot-pressing equipment. On the leather-wrapped hot-pressing equipment, make the lower and upper molds of the leather-wrapped hot-pressing equipment according to the shape and size of the speaker skin and the shape and size of the tooling, respectively, to fix the tooling and the frame;

[0012] d. Prepare PVC leather for use;

[0013] 2. The present invention uses a specific process to produce a wrapped speaker, which can be divided into eight steps:

[0014] The first step is skin punching:

[0015] Select PVC leather material, punch it out according to the predetermined speaker shape and dimensions, and accurately cut the surface;

[0016] The second step is to punch the epidermis:

[0017] For the cut skin, the skin is precisely punched with all the skeleton functional holes that are distributed in the skeleton sound-transmitting hole area by CNC equipment or laser technology. In addition to punching the skin functional holes, a second concave-convex positioning structure is also made corresponding to the first concave-convex positioning structure of the skeleton. The second concave-convex positioning structure is located at the outer part of the skin sound-transmitting hole area, and then the skin semi-finished product is formed;

[0018] The third step is to spray glue and dry the surface:

[0019] Use glue spraying equipment to spray glue on the back of the semi-finished surface product, and then dry it after spraying. The drying temperature is 60℃±5℃ and the time is 15min-20min.

[0020] The fourth step is to spray glue and dry the skeleton:

[0021] Use glue spraying equipment to spray glue on the front of the skeleton semi-finished product, and then dry it after the glue spraying is completed. The drying temperature is 60℃±5℃ and the time is 15min-20min.

[0022] Step 5: Positioning the skeleton and skin:

[0023] Position the skeleton and skin on the upper and lower molds of the leather covering hot pressing equipment. On the one hand, fix the glue-sprayed and dried skeleton into the upper mold. On the other hand, first fix the aforementioned special tooling M with a needle plate on the lower mold of the leather covering hot pressing equipment used in the prior art. Then, the glue-sprayed and dried semi-finished skin is stably placed on the special needle plate of the tooling. Through the corresponding positioning of the concave-convex positioning structure 1 and the concave-convex positioning structure 2, the functional holes of the skin are completely aligned with the functional needles inserted into the tooling needle plate.

[0024] Step 6: Pressing the skeleton and skin together:

[0025] After the skeleton and the skin of the lower mold are placed and accurately positioned on the leather covering hot pressing equipment, the upper mold and the lower mold are closed by clamping the mold to tightly fit the skeleton and the skin together, so that the skeleton and the skin are pressed together on a large surface. The pressure of the upper mold and the lower mold is 0.5Mpa-0.6Mpa, and the pressing time is 10S-15S. Through pressing, the skin functional holes of the skin in the sound hole area are accurately aligned with the skeleton functional holes of the skeleton, and the sound hole is covered to form a high-quality speaker sound hole;

[0026] Step 7: Epidermal resurfacing:

[0027] After the sound hole area of the speaker is wrapped, continue to wrap the other areas. By manually wrapping, the concave and convex positioning structure of the surface is concealed so that it is not visible on the surface of the speaker. When wrapping the surface, use a drying gun to activate the glue. The temperature of the drying gun is 220℃-240℃, and the distance between the drying gun mouth and the coating area is 20cm-30cm. The baking time is 3S-5S.

[0028] Step 8: Product activation treatment:

[0029] Place the wrapped speaker on the activated mold, form a closed space through the vacuum membrane, then evacuate to form negative pressure, set the activation temperature to 80℃-90℃, and the activation time to 60S-80S for vacuum activation.

[0030] The vehicle-use covered speaker is provided with sound holes in its sound hole area, and has a diamond-shaped pattern as a whole.

[0031] The vehicle-use covered speaker has at least two concave-convex positioning structures on the surface.

[0032] In the production process for a vehicle-use covered speaker, the first concave-convex positioning structure of the tooling is provided with at least two locations, corresponding to the second concave-convex positioning structure of the surface.

[0033] The vehicle-use covered speaker of the present invention has a novel design and structure, an attractive appearance, and precisely made through-holes, which not only meet the requirements of light transmission, sound transmission, and air permeability, but also add a unique visual and tactile experience to the interior of the vehicle, and meet the needs of the automotive interior decoration industry for trends such as intelligent and environmentally friendly material applications and personalized customization, while taking into account the dual pursuit of multifunctional requirements such as light transmission, sound transmission, and odor transmission and aesthetics. The efficient and lower-cost production process solution proposed by the present invention is scientific and reasonable, simplifies the assembly process, and saves a lot of molds and equipment. Especially in a large-scale production environment, it avoids the cumulative effect of assembly errors that seriously damage the overall quality and consistency of the speaker products, improves production efficiency, reduces consumption, and improves economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings described herein are provided to provide a further understanding of the present application and constitute a part of this application.

[0035] Figure 1 It is a three-dimensional schematic diagram of the wrapped speaker and production tooling.

[0036] Figure 2 for Figure 1 AA sectional view schematic diagram.

[0037] Figure 3 for Figure 1 BB cross-sectional view schematic diagram.

[0038] Figure 4 This is a schematic diagram of a wrapped speaker.

[0039] In the figure: P-epidermis; P1-epidermis functional hole; P2-concave-convex positioning structure 2; G-skeleton; G1-skeleton functional hole; M-tooling; M1-functional needle; M2-concave-convex positioning structure 1; h-vertical spacing; l-horizontal spacing. DETAILED DESCRIPTION

[0040] To make the purpose, technical solutions, and advantages of the invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described below are merely illustrative of the present invention. Key words that require attention in these descriptions, including "functional hole," "positioning hole," "functional needle," "positioning needle," and "diamond pattern," are merely used to facilitate the description of the present invention and simplify the description, and therefore should not be construed as limiting the present invention.

[0041] The technical problems that the wrapped speakers and production process of the present invention are committed to solving are mainly concentrated in two aspects: First, the present invention is committed to achieving precise positioning of the surface holes, and these holes are precisely located on the plastic frame. Accurate positioning is crucial to maintaining key properties such as sound transmission and breathability. Any misalignment of the hole position will directly weaken these properties and affect the aesthetics. Secondly, the traditional covering method requires cumbersome positioning and fixing processes during assembly, which not only greatly increases the manufacturing cost, but the existence of assembly errors may also result in poor covering effect. Especially in a large-scale production environment, the cumulative effect of assembly errors will seriously damage the overall quality and consistency of the product. In view of this, the present invention also pays special attention to how to simplify the assembly process while ensuring the functionality of the through holes to improve production efficiency and product quality. Through innovative design and methods, the present invention proposes the following efficient and lower-cost solution, which meets the needs of the automotive interior industry for trends such as intelligence, environmentally friendly material applications and personalized customization, while taking into account the dual pursuit of multifunctionality such as sound transmission and breathability of speakers and aesthetics.

[0042] like Figure 1 and Figure 4 As shown, the sound-transmitting hole area of the encapsulated speaker is provided with sound-transmitting holes, which are through holes with a diameter of 2.5mm-3mm, a vertical spacing h between adjacent through holes of 2mm-3mm, and a horizontal spacing l of 2mm-3mm. The encapsulated speaker of the present invention comprises a skin P and a frame G, wherein the frame G is provided with functional holes, and the skin P is provided with functional holes corresponding to the frame G, and is provided with functional holes of the same size and position. The skin P and the frame G are glued and fixed as one body, and the functional holes of the skin P and the functional holes of the frame G are both through holes, precisely corresponding to each other and positioned to form the sound-transmitting holes of the speaker, which are evenly distributed in a diamond pattern as a whole. In this embodiment, the sound-transmitting holes of the speaker have a diameter of 2.8mm, a vertical spacing h between adjacent through holes of 2.8mm, and a horizontal spacing l of 2.8mm.

[0043] 1. Preparatory steps of the present invention:

[0044] a. Based on the speaker shape design, the outer contour (outer shape) of the frame G is set and manufactured using injection molding equipment. To produce high-quality speaker sound holes, the frame G's frame functional holes G1 are set according to the design requirements of the speaker sound holes (aperture diameter of 2.5mm-3mm, vertical spacing h between adjacent through holes of 2mm-3mm, and horizontal spacing l of 2mm-3mm). The frame G is provided with a sound hole area, which is filled with the frame functional holes G1. The frame functional holes G1 are through holes. In this embodiment, the aperture of the frame functional holes G1 is 2.8mm, the vertical spacing h is 2.8mm, and the horizontal spacing l is 2.8mm. In this embodiment, the frame functional holes G1 are arranged in a diamond pattern. Then, the frame G semi-finished product is formed by injection molding.

[0045] b. To make high-quality speaker holes, see Figure 2-Figure 3 As shown, the present invention manufactures a tool M, which corresponds to the sound-transmitting hole area of the skeleton G and is also provided with a sound-transmitting hole area. The sound-transmitting hole area of the tool M is provided with a functional needle M1. The diameter, spacing and layout (position) of the functional needle M1 completely correspond to the epidermal functional hole P1 of the epidermis P or the skeleton functional hole G1 of the skeleton G. In this embodiment, the diameter of the needle plate functional needle M1 is 2.8 mm, the vertical spacing between adjacent functional needles M1 is 2.8 mm, and the horizontal spacing is 2.8 mm. The functional needles M1 are arranged in a diamond pattern. In addition, a concave-convex positioning structure M2 is provided on the periphery of the sound-transmitting hole area of the tool M. In this embodiment, the concave-convex positioning structure M2 is a positioning needle of an axial hole structure, and is provided in at least two locations. The tool M is mechanically processed to form a needle plate including the functional needles M1 in the sound-transmitting hole area and the concave-convex positioning structure M2.

[0046] c. In order to perform hot pressing and gluing of the skin P and the skeleton G using the existing leather covering hot pressing equipment, the lower mold and upper mold (mold) of the leather covering hot pressing equipment are respectively made according to the shape and size of the speaker skin P and the shape and size of the tooling M, which are used to fix the tooling M and the skeleton G respectively.

[0047] d. Prepare PVC leather for use.

[0048] 2. The present invention uses a specific process to produce a wrapped speaker, which can be subdivided into eight production steps:

[0049] The first step is to punch out the skin P:

[0050] In this step, the surface P material first needs to be precisely cut. In this embodiment, PVC leather is selected and punched according to the predetermined speaker shape and outer dimensions to ensure that the shape and size design requirements of the covered speaker are met in subsequent steps.

[0051] The second step is to punch the skin:

[0052] For the cut skin P, in this step, the skin function holes P1 are accurately punched in the skin P by using CNC equipment or laser technology, corresponding to all the skeleton function holes G1 distributed in the sound-transmitting hole area of the skeleton G. Figure 3 and Figure 4 In this embodiment, the functional holes have a diameter of 2.8 mm, a vertical spacing h of 2.8 mm, and a horizontal spacing l of 2.8 mm. In addition to opening the epidermis functional holes P1, this step also involves creating concave-convex positioning structures P2 corresponding to the concave-convex positioning structures M2 of the skeleton G. These concave-convex positioning structures P2 are generally located outside the hole area. In this embodiment, these concave-convex positioning structures P2 serve as positioning holes, which then form the semi-finished epidermis P.

[0053] The third step is to spray glue and dry the surface P:

[0054] Use glue spraying equipment to spray glue (water-based glue) on the back of the semi-finished product of the skin P. After the glue spraying is completed, it is dried at a temperature of 60℃±5℃ and a time of 15min-20min.

[0055] The fourth step is to spray glue and dry the frame G:

[0056] The semi-finished product of skeleton G is sprayed with glue (water-based glue) on the front through glue spraying equipment, and then dried after the spraying is completed. The drying temperature is 60℃±5℃ and the time is 15min-20min. In this embodiment, the drying temperature is 60℃ and the time is 16min.

[0057] Step 5: Positioning of skeleton G and epidermis G:

[0058] In order to accurately hot-press and glue the skeleton G to the skin P, the skeleton G and the skin G are first positioned on the upper and lower molds of the leather covering hot-pressing equipment. On the one hand, the glue-sprayed and dried skeleton G is fixed into the upper mold. On the other hand, the aforementioned special tooling M with a needle plate is first fixed to the lower mold of the leather covering hot-pressing equipment used in the prior art. Then, the glue-sprayed and dried skin P semi-finished product is stably placed on the special needle plate of the tooling M. The concave-convex positioning structure M2 and the concave-convex positioning structure P2 are used to correspond to each other to position the semi-finished product. Figure 1-Figure 3 As shown, the functional holes P1 of the skin P are perfectly aligned with the functional pins M1 of the pin plate of the tooling M. The pin plate is the most sophisticated tooling design and fabrication in the present invention, which can accurately fix the position of the skin P and ensure that all holes in the final speaker product are very accurately aligned.

[0059] Step 6: Pressing the skeleton G and the skin G together:

[0060] After the skeleton G in the mold and the skin P in the lower mold are placed and accurately positioned on the leather covering hot press equipment, this step closes the upper and lower molds to tightly fit the skeleton G and skin P together, pressing the skeleton G and skin P together over their large surfaces. The pressure between the upper and lower molds is 0.5 MPa to 0.6 MPa, and the pressing time is 10 to 15 seconds. In this embodiment, the pressure is 0.5 MPa and the pressing time is 10 seconds. Through pressing, the skin functional hole P1 in the sound-transmitting hole area of the skin P is precisely aligned with the skeleton functional hole G1 of the skeleton G, forming a high-quality sound-transmitting hole for the speaker.

[0061] Step 7: Epidermal P wrapping:

[0062] After wrapping the sound-transmitting hole area of the speaker, proceed with the reverse wrapping of the other areas. This manual wrapping conceals the concave and convex positioning structure P2 of the surface P, making it invisible from the exterior. During the wrapping process, the glue is activated using a drying gun at a temperature of 220°C-240°C, with the gun tip positioned 20cm-30cm from the wrapping area for 3-5 seconds. In this embodiment, the gun temperature is 230°C, the gun tip is positioned 20cm from the wrapping area, and the baking time is 4 seconds.

[0063] Step 8: Product activation treatment:

[0064] The wrapped speaker is placed on the activated mold, and a vacuum film is used to form a closed space. Then, a vacuum is applied to create a negative pressure. The activation temperature is set to 80°C-90°C and the activation time is set to 60s-80s. This vacuum activation process ensures a firm bond between the skeleton G and the skin P, ensuring long-term quality stability and durability. In this embodiment, the activation temperature is 80°C and the activation time is 60s.

[0065] The above description is merely one embodiment of the present invention. Those skilled in the art will readily appreciate that the present invention may have various modifications and variations, which are not detailed here. However, any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to fall within the scope of protection claimed by the present invention.

Claims

1. A vehicle-use enclosed speaker, wherein the sound-transmitting hole region of the speaker is provided with a sound-transmitting hole, wherein the sound-transmitting hole is a through hole, wherein the aperture of the through hole is 2.5 mm to 3 mm, the vertical spacing (h) between adjacent through holes is 2 mm to 3 mm, and the horizontal spacing (l) between adjacent through holes is 2 mm to 3 mm, wherein: The speaker includes a skeleton (G) and a skin (P). The skeleton (G) is provided with a skeleton functional hole (G1) to form a sound-transmitting hole area of the skeleton (G). The skin (P) corresponds to the skeleton functional hole (G1) of the skeleton (G) and is provided with a skin functional hole (P1) of the same size and position to form a sound-transmitting hole area of the skin (P). A concave-convex positioning structure 2 (P2) is also provided on the periphery of the sound-transmitting hole area of the skin (P). The skeleton functional hole (G1) of the skeleton (G) and the skin functional hole (P1) of the skin (P) are both through holes. The skin (P) covers the skeleton (G) and is glued and fixed to the skeleton (G) as a whole. The skeleton functional hole (G1) of the skeleton (G) and the skin functional hole (P1) of the skin (P) are precisely positioned and aligned to form the sound-transmitting hole of the speaker.

2. The vehicle-use wrapped speaker according to claim 1, characterized in that: The sound box has sound holes in its sound hole area, and the whole box has diamond-shaped patterns.

3. The vehicle-use wrapped speaker according to claim 1, characterized in that: The second concave-convex positioning structure (P2) of the skin (P) is provided with at least two locations.

4. A production tool for a vehicle-use covered speaker, characterized in that: The tooling M includes a functional needle (M1), the diameter, spacing and layout of the functional needle (M1) completely correspond to the diameter, spacing and layout of the surface functional holes (P1) of the speaker surface (P), and corresponding to the concave-convex positioning structure 2 (P2) provided on the speaker surface (P), a concave-convex positioning structure 1 (M2) is provided.

5. The vehicle-use covered speaker production tooling according to claim 4 is characterized in that: The concave-convex positioning structure 1 (M2) of the tooling (M) is provided with at least two locations, corresponding to the concave-convex positioning structure 2 (P2) of the skin (P).

6. A production process for a vehicle-use covered speaker, characterized in that: The steps include:

1. Preparation steps: a. Injection molding skeleton (G), according to the shape of the speaker design, set the skeleton (G) its outline, through the injection molding equipment, make the skeleton (G), according to the design requirements of the speaker sound hole, set the skeleton (G) skeleton function hole (G1), the skeleton function hole (G1) is a through hole, and then injection molding to form the skeleton (G) semi-finished product; b. Make a tool (M), the tool (M) corresponds to the epidermal functional hole (P1) of the epidermis P, and is provided with a functional needle (M1), the diameter, spacing and layout of the functional needle (M1) completely correspond to the epidermal functional hole (P1) of the epidermis (P), and corresponds to the concave-convex positioning structure 2 (P2) of the epidermis (P), and is provided with a concave-convex positioning structure 1 (M2), forming a needle plate. c. Make the lower and upper molds of the leather-wrapped hot press equipment. On the leather-wrapped hot press equipment, according to the shape and size of the speaker skin (P) and the shape and size of the tooling M, respectively, make the lower and upper molds of the leather-wrapped hot press equipment for fixing the tooling (M) and the frame (G); d. Prepare PVC leather for use; 2. The present invention uses a specific process to produce a wrapped speaker, which can be divided into eight steps: The first step is the skin (P) punching: Select PVC leather material, punch it out according to the predetermined speaker shape and outer dimensions, and accurately cut the skin (P); The second step is to punch the epidermis (P): For the cut skin (P), the skin (P) is precisely punched with skin functional holes (P1) corresponding to all the skeleton functional holes (G1) distributed in the sound-transmitting hole area of the skeleton (G) by numerical control equipment or laser technology. In addition to punching through the skin functional holes (P1), a concave-convex positioning structure 2 (P2) is also made corresponding to the concave-convex positioning structure 1 (M2) of the skeleton G. The concave-convex positioning structure 2 (P2) is located at the outer portion of the sound-transmitting hole area of the skin (P), and then a semi-finished skin (P) is formed; The third step is to spray glue and dry the surface (P): The back of the semi-finished product of the surface (P) is sprayed with glue by the glue spraying equipment, and then dried after the glue spraying is completed. The drying temperature is 60℃±5℃ and the time is 15min-20min. The fourth step is to spray glue and dry the frame (G): The front of the semi-finished skeleton (G) is sprayed with glue by means of a glue spraying device, and then dried after the glue spraying is completed. The drying temperature is 60°C ± 5°C and the drying time is 15min-20min. Step 5: Positioning the skeleton (G) and epidermis (G): Position the skeleton (G) and the skin (G) on the upper and lower molds of the leather covering hot pressing equipment. On the one hand, fix the glue-sprayed and dried skeleton (G) into the upper mold. On the other hand, first fix the aforementioned specially made tooling (M) with a needle plate on the lower mold of the leather covering hot pressing equipment used in the prior art. Then, the glue-sprayed and dried skin (P) semi-finished product is stably placed on the needle plate specially made on the tooling (M). Through the corresponding positioning of the concave-convex positioning structure 1 (M2) and the concave-convex positioning structure 2 (P2), the skin functional hole (P1) of the skin (P) is completely aligned with the functional needle (M1) inserted into the needle plate of the tooling (M). Step 6: Pressing the skeleton (G) and the skin (G) together: After the skeleton (G) on the mold and the skin (P) on the lower mold are placed and accurately positioned on the leather covering hot pressing equipment, the upper mold and the lower mold are closed by clamping the mold to tightly fit the skeleton (G) and the skin (P) together, so that the skeleton (G) and the skin (P) are pressed together on a large surface. The pressure of the upper mold and the lower mold is 0.5Mpa-0.6Mpa, and the pressing time is 10S-15S. Through pressing, the skin functional hole (P1) of the skin (P) in the sound hole area is accurately aligned with the skeleton functional hole (G1) of the skeleton (G), and the covering is performed to form a high-quality sound hole for the speaker; Step 7: Epidermis (P) wrapping: After the sound hole area of the speaker is wrapped, continue to wrap the other areas. By manually wrapping, the concave and convex positioning structure 2 (P2) of the surface (P) is concealed so that it is not visible on the surface of the speaker. When the surface (P) is wrapped, the glue is activated by a drying gun. The temperature of the drying gun is 220℃-240℃, and the distance between the drying gun mouth and the wrapped area is 20cm-30cm. The baking time is 3s-5s. Step 8: Product activation treatment: Place the wrapped speaker on the activated mold, form a closed space through the vacuum membrane, then evacuate to form negative pressure, set the activation temperature to 80℃-90℃, and the activation time to 60S-80S for vacuum activation.

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