A process for attaching and covering the edges of a special-shaped sound cover plate with a recessed portion

Abstract

This invention discloses a fabric attaching and edge-wrapping process for irregularly shaped speaker covers with notches, belonging to the field of speaker cover processing technology. The process includes: S1, laser cutting of the fabric; S2, spraying adhesive onto the outer surface of the speaker cover; S3, pressing and attaching the fabric to the outer surface of the speaker cover to form a composite assembly; S4, laser cutting of the fabric in the composite assembly according to the shape of the speaker cover, retaining an edge-wrapping allowance; S5, applying adhesive to the edge areas on the inner surface of the speaker cover where the edge-wrapping allowance needs to be attached; S6, pressing and attaching the edge-wrapping allowance to the adhesive-covered edge areas on the inner surface using an edge-wrapping device; S7, pressure holding treatment; S8, inspection. This invention, through step-by-step processing of laser cutting and cutting, spraying and applying adhesive, combined with specialized edge-wrapping equipment, effectively achieves precise edge-wrapping of irregularly shaped covers, especially the notched areas, improving edge-wrapping quality and production efficiency.

Description

Technical Field

[0001] This invention relates to the field of speaker cover processing technology, and in particular to a fabric attaching and edging process for an irregularly shaped speaker cover with a notch. Background Technology

[0002] As an important component of audio equipment, speaker covers typically require a fabric (such as mesh) to be attached to their surface to prevent dust accumulation, protect the speakers, and improve sound quality. With the continuous development of consumer electronics, speaker covers have become increasingly diverse in shape, with many featuring irregular contours or even recessed structures, placing higher demands on the fabric attachment and edging process.

[0003] Currently, the fabric bonding and edging process for speaker covers typically includes steps such as fabric cutting, adhesive application, bonding, excess material cutting, and edging. However, traditional bonding methods often involve manual labor or simple pressing equipment to attach the fabric to the cover surface. During the bonding process, problems such as wrinkles, loosening, or misalignment of the fabric can easily occur, resulting in a loose bond between the fabric and the speaker cover surface, affecting the product's appearance and potentially even sound quality. Furthermore, for irregularly shaped speaker covers with notches, the edging operation at the edges of these notches presents significant difficulties. Traditional lateral extrusion edging processes cannot be effectively implemented in these irregular areas, making it difficult to guarantee the quality of the edging.

[0004] To address the aforementioned issues, there is an urgent need to develop a fabric bonding and edge-wrapping process suitable for irregularly shaped speaker covers with notches, in order to achieve high-quality bonding and edge wrapping between the fabric and the cover, thereby improving product yield. Summary of the Invention

[0005] The purpose of this invention is to provide a fabric attaching and edging process for irregularly shaped speaker covers with recesses, which can solve the technical problems of poor adhesion between the fabric and the speaker cover surface caused by traditional attaching methods, and the inability of traditional edging processes to edge the recesses.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A fabric attaching and edging process for an irregularly shaped speaker cover with a notch, wherein the speaker cover includes an outer surface and an inner surface, and at least one notch is provided on the speaker cover; the process includes the following steps: S1. Fabric cutting: Laser cutting of the fabric to obtain fabric material for attachment to the speaker cover; S2. Glue spraying treatment: The speaker cover plate is placed in a glue spraying machine, and glue is sprayed onto the outer surface of the speaker cover plate through the glue spraying machine. S3. Attaching fabric: The fabric and the speaker cover plate after spraying adhesive are placed in an attachment and pressing device. The fabric is pressed and attached to the outer surface of the speaker cover plate by the attachment and pressing device to form a composite component in which the fabric and the speaker cover plate are bonded together. S4. Allowance cutting: The fabric in the composite component is laser-cut according to the shape of the speaker cover. After cutting, the edge of the fabric retains a preset width of edge allowance relative to the edge of the speaker cover. S5. Glue application: The cut composite components are clamped in a glue application machine, and glue is applied to the edge area on the inner surface of the speaker cover where the edge binding allowance needs to be attached. S6. Edge binding treatment: Place the glued composite component in the edge binding equipment, and use the edge binding equipment to press and attach the edge binding allowance of the fabric to the glued edge area on the inner surface of the speaker cover. S7. Pressure holding treatment: The edge-bound composite component is placed in a pressure holding device for pressure holding treatment. After the pressure holding time reaches the predetermined value, the edge-bound product is obtained. S8. Inspection: Inspect whether the edge-sealing product is qualified.

[0007] Preferably, in step S1, the fabric obtained by cutting is a rectangular sheet, and several positioning holes are processed at each edge of the fabric by laser cutting.

[0008] Preferably, the bonding and pressing device includes: frame; The upper mold assembly includes an upper template and a first telescopic driver, which is mounted on the frame and is used to drive the upper template to move up and down. A lower mold assembly is disposed below the upper mold assembly, and the lower mold assembly includes a lower template that is horizontally slidably connected to the frame; The fabric stretching assembly includes a positioning frame and a second telescopic driver. The positioning frame is located between the upper template and the lower template. The top of the positioning frame is provided with positioning pins that correspond one-to-one with the positioning holes. The second telescopic driver is mounted on the frame and is used to drive the positioning frame to move up and down.

[0009] Preferably, the lower mold assembly further includes a first slide rail and a first slider. The first slide rail is horizontally fixedly connected to the frame, and the first slider is installed at the bottom of the lower mold plate, with the first slider slidingly engaged with the first slide rail. The fabric stretching assembly further includes a second slide rail and a second slider. The second slide rail is vertically fixedly connected to the fixed end of the second telescopic driver, and the second slider is fixedly connected to the movable end of the second telescopic driver, with the second slider slidingly connected to the second slide rail. The positioning frame is fixedly connected to the second slider.

[0010] Preferably, step S3 includes the following steps: S31. Pull the lower template out horizontally and control the second telescopic driver to drive the positioning frame to move downward, place the glued speaker cover on the lower template, and set the several positioning holes of the fabric onto the several positioning nails to make the fabric taut and fixed on the positioning frame. S32. Control the second telescopic driver to drive the positioning frame to move upward and push the lower template horizontally inward back to below the positioning frame; S33. Control the second telescopic driver to drive the positioning frame to move downward so that the fabric covers the speaker cover; S34. Control the first telescopic driver to drive the upper template downward to press the fabric and the speaker cover together, and then separate the several positioning holes of the fabric from the several positioning pins. S35. After pressing for a predetermined time, a composite component is formed in which the fabric and the speaker cover are bonded together. S36. Control the second telescopic driver to drive the positioning frame to move upward and pull the lower template out horizontally to remove the composite component.

[0011] Preferably, the edging device includes: Organism; The lower mold base is fixedly connected to the machine body, and a receiving groove is formed on the top of the lower mold base; The notched pressure block has the same number as the notches. Each notched pressure block includes a guide portion and a pressing portion at the top of the guide portion. A guide groove is formed in the bottom of the receiving groove to accommodate the guide portion. Several springs are disposed in the guide groove, with their ends respectively abutting against the bottom surface of the guide portion and the bottom surface of the guide groove. The edge of the pressing portion protrudes outward relative to the edge of the guide portion, and an insertion gap is formed between the bottom surface of the pressing portion and the bottom surface of the receiving groove. This insertion gap is used to accommodate the edge region of the notch. Multiple sets of side-push assemblies are distributed around the outer periphery of the lower mold base. Each set of side-push assemblies includes a third telescopic driver and a side-push block. The third telescopic driver is mounted on the machine body and is used to drive the side-push block to move obliquely. The side-push block has an action surface on the side near the receiving groove. The pressing assembly includes a pressing die and a fourth telescopic actuator. The pressing die is located above the lower die base, and a pressing surface is formed at the bottom of the pressing die. The fourth telescopic actuator is used to drive the pressing die to move up and down.

[0012] Preferably, the working surface includes a guide slope and an arc-shaped slope arranged sequentially from top to bottom. The guide slope is inclined from top to bottom toward the receiving groove, and the arc-shaped slope is smoothly connected to the bottom surface of the side push block.

[0013] Preferably, the pressing die includes a pressing base, a pressing block, several sliding rods, and several elastic elements. The bottom of the pressing base has a groove, and the pressing block is vertically and flexibly disposed in the groove. The pressing surface is formed on the bottom of the pressing block. The pressing base has several sliding holes communicating with the groove. A sliding rod is slidably disposed in each sliding hole, and the bottom end of each sliding rod is connected to the top of the pressing block. An elastic element is sleeved on each sliding rod, and each elastic element is disposed between the top of the pressing block and the wall of the groove.

[0014] Preferably, each set of the side push assembly further includes a third slider and a third slide rail, the third slide rail being obliquely mounted on the machine body, the third slider being slidably connected to the third slide rail, and the side push block being mounted on the third slider.

[0015] Preferably, step S6 includes the following steps: S61. Fold the edge allowance of the composite component after dispensing towards the inner surface of the speaker cover plate in the area of ​​the notch. S62. Place the composite component in the receiving groove of the edge-binding device, so that the fabric faces the receiving groove, and insert the edge area of ​​the notch into the insertion gap; S63. Control each of the third telescopic actuators to drive the corresponding side push blocks to move towards the receiving groove, so that the end of each side push block near the receiving groove is inserted below the corresponding edge allowance under the guidance of the guide slope; continue to drive each side push block to move forward, so as to cause the edge allowance to flip up and move the arc-shaped slope to the top of the speaker cover; then continue to drive each side push block to move forward, so as to initially press the corresponding edge allowance to the edge area of ​​the inner surface of the speaker cover through the arc-shaped slope; S64. Control each of the third telescopic actuators to drive the side push blocks connected to them to move away from the receiving slot, so that each of the side push blocks returns to its initial position. S65. Control the fourth telescopic driver to drive the lower pressing mold downward. The area of ​​the lower pressing mold corresponding to the notch pressing block presses the notch pressing block, so that the notch pressing block moves downward and fits tightly against the edge area of ​​the notch. At the same time, the remaining area of ​​the lower pressing mold fits tightly against the remaining edge areas of the speaker cover plate except for the edge area of ​​the notch, thereby fully pressing the edge allowance onto each edge area of ​​the inner surface of the speaker cover plate. S66. Control the fourth telescopic driver to drive the lower pressing mold to move upward and remove the edge-wrapped composite component.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: (1) The present invention obtains fabric of precise size by laser cutting and processes several positioning holes at each edge of the fabric. With the help of positioning nails on the positioning frame in the bonding and pressing equipment, the fabric is precisely tightened and fixed, which effectively avoids wrinkles, loosening or displacement of the fabric during the bonding process. (2) In the step of attaching the fabric, when the upper template moves down to press the fabric and the speaker cover together, the several positioning holes of the fabric are immediately separated from the several positioning pins; thereby taking advantage of the uncured window period of the glue to release the tension of the fabric in advance, so that the fabric can naturally shrink back to eliminate internal stress, prevent the edges from curling and arching after demolding, and shorten the time of the positioning pins pressing on the hole wall to avoid the fabric from tearing or deforming. (3) In the edge-binding process, when the notch pressing block is not subjected to external pressure, the notch pressing block is lifted upward as a whole under the action of the spring, which increases the insertion gap between the bottom surface of the pressing part and the bottom surface of the receiving groove, making it easier for the edge area of ​​the notch to be inserted. When the notch pressing block receives the pressure of the lower pressing die, the pressing part can be adjusted in height by means of the elastic floating of the spring. Furthermore, by using a side push block with a guide slope and an arc slope, the edge-binding allowance is first flipped upward, and then it is initially pressed onto the inner surface of the cover plate by the arc slope, automatically completing the process except for the notch. The edge banding at the remaining locations requires no manual intervention, improving production efficiency. In addition, the lower die is driven downward by the fourth telescopic actuator. The area of ​​the lower die corresponding to the notch block is first squeezed by the lower die, so that the notch block moves downward along the guide groove, allowing the pressing part to fit tightly with the edge area of ​​the notch. At the same time, the remaining areas of the lower die press the other edges of the speaker cover, ensuring that all edge areas (including the edge area of ​​the notch) are subjected to uniform and sufficient pressing force, effectively eliminating local bulges or loose adhesion, and significantly improving the edge banding adhesion strength and the flatness of the edge banding appearance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram illustrating the steps of the fabric attaching and binding process of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of the irregularly shaped speaker cover with a notch according to the present invention.

[0019] Figure 3 This is a schematic diagram of the irregularly shaped speaker cover with a notch from another angle.

[0020] Figure 4 This is a photograph of the irregularly shaped speaker cover with a notch before the edging is finished, according to the present invention.

[0021] Figure 5 This is a physical image of the edge-sealing product of the present invention.

[0022] Figure 6 This is a schematic diagram of the bonding and pressing device of the present invention.

[0023] Figure 7 This is a structural schematic diagram of the bonding and pressing device of the present invention from another angle.

[0024] Figure 8 This is a structural schematic diagram of the bonding and pressing device of the present invention from another angle.

[0025] Figure 9 This is a schematic diagram of the structure of the lower template in the bonding and pressing device of the present invention.

[0026] Figure 10 This is a schematic diagram of the edge-wrapping device of the present invention.

[0027] Figure 11 This is a partial structural schematic diagram of the edge-binding device of the present invention.

[0028] Figure 12 This is a schematic diagram of the structure of the lower mold base and the notch pressure block in the edge-binding device of the present invention.

[0029] Figure 13 This is a schematic diagram of the side-pushing component in the edge-wrapping device of the present invention.

[0030] Figure 14 This is a cross-sectional view of the lower pressing die in the edge-sealing device of the present invention.

[0031] Figure 15 This is a cross-sectional view of the lower mold base and the recessed pressure block in the edge-binding device of the present invention.

[0032] Explanation of reference numerals in the attached figures: 1-Speaker cover plate; 11-Outer surface; 12-Inner surface; 13-Recessed part; 2-Fabric material; 21-Edging allowance; 22-Positioning hole; 3-Attaching and pressing equipment; 31-Frame; 32-Upper mold assembly; 321-Upper template; 322-First telescopic actuator; 33-Lower mold assembly; 331-Lower template; 3311-Positioning part; 3312-Allowing groove; 332-First slide rail; 333-First slider; 34-Fabric stretching assembly; 341-Positioning frame; 342-Second telescopic actuator; 343-Positioning pin; 344-Second slide rail; 345-Second slider; 35-First limiting part; 36-Second limiting part; 4-Composite assembly; 5-Edging equipment; 51-Machine 52-Lower mold base; 521-Accommodation groove; 522-Guide groove; 523-Spring; 53-Notch pressure block; 531-Guide part; 532-Crimping part; 534-Interlocking gap; 54-Side push assembly; 541-Third telescopic actuator; 542-Side push block; 543-Action surface; 5431-Guide inclined surface; 5432-Arc-shaped inclined surface; 544-Third slider; 545-Third slide rail; 55-Pressing assembly; 551-Pressing mold; 552-Fourth telescopic actuator; 5511-Pressing base; 5512-Pressure block; 5513-Slide rod; 5514-Elastic element; 5515-Groove; 5516-Slide hole; 5517-Allowing hole; 6-Edge-sealed product. Detailed Implementation

[0033] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0034] like Figure 1 As shown, the present invention provides a fabric attaching and edging process for an irregularly shaped speaker cover with a notch, and also... Figure 2-3 As shown, the speaker cover 1 includes an outer surface 11 and an inner surface 12, and at least one recess 13 is provided on the speaker cover 1; the process includes the following steps: S1. Fabric cutting: Laser cutting of the fabric to obtain fabric 2 for attaching to the speaker cover; S2. Glue spraying treatment: The speaker cover plate 1 is placed in a glue spraying machine, and glue is sprayed onto the outer surface of the speaker cover plate 1. Specifically, after the glue spraying is completed, the speaker cover plate 1 is left to stand for about 3 minutes before proceeding with the subsequent fabric attachment step. The purpose of this standing treatment is to allow the glue on the surface of the speaker cover plate 1 to dry properly, thereby avoiding the glue being squeezed into the mesh of the speaker cover plate 1 during the subsequent pressing process of the bonding and pressing equipment 3, which would lead to glue overflow defects and thus affect the product's appearance and acoustic performance. S3. Attaching fabric: Place the fabric 2 and the speaker cover 1 after spraying glue in the attachment and pressing equipment 3, and press the fabric 2 onto the outer surface of the speaker cover 1 through the attachment and pressing equipment 3 to form a composite component 4 in which the fabric 2 and the speaker cover 1 are bonded together. S4. Excess Cutting: The fabric 2 in the composite component 4 is laser-cut according to the shape of the speaker cover plate 1. After cutting, the edge of the fabric 2 retains a pre-set width of edge binding allowance 21 relative to the edge of the speaker cover plate 1. Specifically, the width of the edge binding allowance 21 is 3-4mm. S5. Glue application: The cut composite component 4 is clamped in a glue dispensing machine, and glue is applied to the edge area of ​​the inner surface 12 of the speaker cover 1 where the edge binding allowance 21 needs to be attached. Specifically, after glue application, the speaker cover 1 is left to stand for about 8 minutes before proceeding with the subsequent edge binding process. The purpose of this standing process is to allow the glue on the surface of the speaker cover 1 to dry properly, thereby avoiding glue overflow defects during the subsequent edge binding process. S6. Edge binding treatment: Place the glued composite component 4 in the edge binding device 5, and press and attach the edge binding allowance 21 of the fabric 2 to the glued edge area of ​​the inner surface 12 of the speaker cover plate through the edge binding device 5. S7. Pressure holding treatment: The edge-wrapped composite component 4 is placed in a pressure holding device for pressure holding treatment. After the pressure holding time reaches the predetermined value, the edge-wrapped product 6 is obtained; specifically, the pressure holding pressure is 0.3~0.4Mpa, and the pressure holding time is 60 seconds. S8. Inspection: Inspect whether the edge-wrapped product 6 is qualified.

[0035] Preferably, in step S1, the fabric 2 obtained by cutting is a rectangular sheet, and a plurality of positioning holes 22 are processed at each edge of the fabric 2 by laser cutting. In this embodiment, specifically, the rectangular sheet is 470mm long and 420mm wide, and four positioning holes 22 are processed at intervals at each edge of the rectangular sheet.

[0036] like Figure 6-8 As shown, the bonding and pressing device 3 includes: Rack 31; The upper mold assembly 32 includes an upper template 321 and a first telescopic driver 322. The first telescopic driver 322 is mounted on the frame 31 and is used to drive the upper template 321 to move up and down. The lower mold assembly 33 is located below the upper mold assembly 32. The lower mold assembly 33 includes a lower template 331, which is horizontally slidably connected to the frame 31. The fabric stretching assembly 34 includes a positioning frame 341 and a second telescopic actuator 342. The positioning frame 341 is located between the upper template 321 and the lower template 331. The top of the positioning frame 341 is provided with positioning pins 343 corresponding to the positioning holes 22. The second telescopic actuator 342 is mounted on the frame 31 and is used to drive the positioning frame 341 to move up and down. Specifically, the positioning frame 341 is rectangular and adapts to the shape of the rectangular sheet. Four positioning pins 343 are spaced apart on each side of the positioning frame 341 and adapt to the positioning holes 22 at each edge of the rectangular sheet. There are two second telescopic actuators 342, which are distributed on both sides of the positioning frame 341 and are both connected to the positioning frame 341. Preferably, the positioning pins 343 are tilted from bottom to top towards the side away from the center of the positioning frame 341, with an tilt angle of 5° to 10°. In this way, when the fabric 2 is fitted onto each positioning pin 343, the fabric 2 is not easy to separate from the positioning frame 341, ensuring the quality of subsequent fabric wrapping.

[0037] For example Figure 6-8 As shown, the lower mold assembly 33 further includes a first slide rail 332 and a first slider 333. The first slide rail 332 is horizontally fixedly connected to the frame 31, and the first slider 333 is installed at the bottom of the lower mold plate 331, with the first slider 333 slidingly engaged with the first slide rail 332. The fabric stretching assembly 34 further includes a second slide rail 344 and a second slider 345. The second slide rail 344 is vertically fixedly connected to the fixed end of the second telescopic driver 342, and the second slider 345 is fixedly connected to the movable end of the second telescopic driver 342, with the second slider 345 slidingly connected with the second slide rail 344. The positioning frame 341 is fixedly connected to the second slider 345. In this embodiment, the cooperation of the first slide rail 332 and the first slider 333 improves the stability of the horizontal movement of the lower mold plate 331; the cooperation of the second slider 345 and the second slide rail 344 improves the stability of the lifting movement of the positioning frame 341.

[0038] In this embodiment, a first limiting part 35 is also installed on the frame 31 to restrict the range of motion of the lower template 331. When the lower template 331 abuts against the first limiting part 35, the positions of the lower template 331 and the upper template 321 correspond, so that the upper template 321 can precisely cooperate with the lower template 331 when it moves downward to press the fabric 2 tightly onto the speaker cover 1. It should be understood that the first limiting part 35 can be directly set on the frame 31 or on the first slide rail 332; a second limiting part 36 is installed on the first slide rail 332 to restrict the range of motion of the lower template 331. The second limiting part 36 is used to restrict the lower template 331 from sliding excessively and to prevent the first slider 333 from disengaging from the first slide rail 332.

[0039] like Figure 9 As shown, at least one positioning part 3311 is formed on the top of the lower template 331. When the speaker cover 1 is placed on the lower template 331, the notch 13 fits exactly on the outside of the positioning part 311, thereby positioning the speaker cover 1 and preventing the speaker cover from shifting and being crushed by the upper template 321 when it moves down. In addition, several clearance grooves 3312 are formed on the top of the lower template 331. Several protrusions are formed on the speaker cover 1, and the positions of the clearance grooves 3312 and the protrusions are arranged one-to-one to ensure that the speaker cover 1 is not damaged during the pressing process.

[0040] Preferably, step S3 includes the following steps: S31. Pull the lower template 331 out horizontally along the first slide rail 332, and control the second telescopic driver 342 to drive the positioning frame 341 to move downward along the second slide rail 344, placing the glued speaker cover 1 on the lower template 331, and fitting the several positioning holes 22 of the fabric 2 one by one onto the several positioning nails 343 to tighten and fix the fabric 2 onto the positioning frame 341; by pulling the lower template 331 out horizontally along the first slide rail 332, for The downward movement of the positioning frame 341 provides ample clearance, making the height of the positioning frame 341 suitable for staff operation, and providing sufficient space for staff to place the speaker cover 1 and the fabric 2; furthermore, by using several positioning pins 343 on the positioning frame 341 to cooperate with the positioning holes 22 of the fabric one by one, the fabric 2 is tightened and fixed on the positioning frame 341, ensuring the positional accuracy and tension uniformity of the fabric 2 before lamination, effectively preventing the fabric from shifting, wrinkling or loosening, and providing a reliable positioning basis for subsequent pressing; S32. Control the second telescopic driver 342 to drive the positioning frame 341 to move upward and push the lower template 331 horizontally inward to below the positioning frame 341; S33, Control the second telescopic driver 342 to drive the positioning frame 341 to move downward so that the fabric 2 covers the speaker cover plate 1; S34. Control the first telescopic driver 322 to drive the upper template 321 downward to press the fabric 2 and the speaker cover 1 together, and then separate the several positioning holes 22 of the fabric 2 from the several positioning pins 343; take advantage of the uncured glue window period to release the tension of the fabric in advance, so that the fabric can naturally shrink back to eliminate internal stress and prevent warping and arching after demolding; at the same time, shorten the pressing time of the positioning pins on the hole wall to avoid tearing or deformation of the fabric. S35. After a predetermined pressing time, a composite component 4 is formed in which the fabric 2 and the speaker cover 1 are bonded together; specifically, the pressing pressure of the bonding and pressing equipment 3 is 0.3 to 0.4 MPa, and the pressing time is 90 seconds. S36. Control the second telescopic driver 342 to drive the positioning frame 341 to move upward and pull the lower template 331 out horizontally to remove the composite component 4.

[0041] like Figure 10-15 As shown, the edge-binding device 5 includes: Body 51; The lower mold base 52 is fixedly connected to the machine body 51, and a receiving groove 521 is formed on the top of the lower mold base 52. The notched pressing block 53 has the same number as the notched portions 13. Each notched pressing block 53 includes a guide portion 531 and a pressing portion 532 located at the top of the guide portion. A guide groove 522 is formed in the bottom of the receiving groove 521 to accommodate the guide portion 531. A plurality of springs 523 are disposed in the guide groove, with both ends of the springs 523 abutting against the bottom surface of the guide portion 531 and the bottom surface of the guide groove 522, respectively. The edge of the pressing portion 532 protrudes outward relative to the edge of the guide portion 531, and an insertion gap 534 is formed between the bottom surface of the pressing portion 532 and the bottom surface of the receiving groove 521. The insertion gap 534 is used to accommodate the edge region of the notched portion 13. Preferably, a plurality of spring mounting grooves are provided opposite to each other on the bottom surface of the pressing portion 532 and the bottom surface of the receiving groove 521, with the springs 523 disposed in the spring mounting grooves. Multiple sets of side-push assemblies 54 are distributed around the outer periphery of the lower mold base 52. Each set of side-push assemblies 54 includes a third telescopic driver 541 and a side-push block 542. The third telescopic driver 541 is mounted on the body 51 and is used to drive the side-push block 542 to move obliquely. The side-push block 542 has an action surface 543 on the side near the receiving groove 521. The pressing assembly 55 includes a pressing mold 551 and a fourth telescopic actuator 552. The pressing mold 551 is located above the lower mold base 52. A pressing surface is formed at the bottom of the pressing mold 551. The fourth telescopic actuator is used to drive the pressing mold 551 to move up and down.

[0042] In this embodiment, the spring 523 is specifically a compression spring. When the notch pressing block 53 is not subjected to external pressure, under the action of the spring 523, the notch pressing block 53 is raised as a whole, which increases the insertion gap 534 between the bottom surface of the pressing part 532 and the bottom surface of the receiving groove 521, making it easier for the edge area of ​​the notch 13 to be inserted. When the notch pressing block 53 receives the pressure of the lower die 551, the elastic floating of the spring 523 allows the pressing part 532 to adaptively adjust its height. Furthermore, multiple sets of side-push components 54 are distributed on the outer periphery of the lower die base 52. The third telescopic actuator 541 drives the side-push block 542 to move obliquely, and its working surface 543 can push the side-push block 542 (excluding the edge area of ​​the notch 13) upwards. The remaining edge binding allowance is folded over and pressed onto the inner surface 12 of the speaker cover, achieving automatic edge binding processing at other locations. In addition, the lower pressing mold 551 is driven downward by the fourth telescopic actuator 552. The area of ​​the lower pressing mold 551 corresponding to the notch pressing block 53 is first pressed against the notch pressing block 53, so that the notch pressing block 53 moves downward along the guide groove, allowing the pressing part 532 to fit tightly against the edge area of ​​the notch 13. At the same time, the remaining areas of the lower pressing mold 551 simultaneously press against other edge parts of the speaker cover, ensuring that all edge areas (including the edge area of ​​the notch 13) are subjected to uniform and sufficient pressing force, effectively eliminating local bulges or loose adhesion, and significantly improving the edge binding adhesion strength and the flatness of the edge binding appearance.

[0043] like Figure 13 As shown, the working surface 543 includes a guide slope 5431 and an arc-shaped slope 5432 arranged sequentially from top to bottom. The guide slope 5431 is inclined from top to bottom toward the receiving groove 521, and the arc-shaped slope 5432 is smoothly connected to the bottom surface of the side push block 542.

[0044] In this embodiment, the guide slope 5431 slopes downwards towards the receiving groove 521, and the guide side push block 542 is smoothly inserted below the edge binding allowance 21. As the side push block 542 continues to advance forward, it flips the guide edge binding allowance 21 upwards, and the arc-shaped slope 5432 moves to the top of the speaker cover 1. With continued advancement, the arc-shaped slope smoothly and initially presses the edge binding allowance 21 against the edge of the inner surface 12 of the speaker cover with a gradual curvature. By utilizing the guide slope 5431 and the arc-shaped slope 5432, the edge binding process at all positions except the notch 13 is automatically completed without manual intervention, thus improving production efficiency.

[0045] like Figure 14As shown, the lower pressing mold 551 includes a lower pressing seat 5511, a pressing block 5512, a plurality of sliding rods 5513, and a plurality of elastic elements 5514. The bottom of the lower pressing seat 5511 has a groove 5515. The pressing block 5512 is movably disposed in the groove 5515, and the lower pressing surface is formed on the bottom of the pressing block 5512. The lower pressing seat 5511 has a plurality of sliding holes 5516 communicating with the groove 5515. A sliding rod 5513 is slidably disposed in each sliding hole 5516. The bottom end of each sliding rod 5513 is connected to the top of the pressing block 5512. An elastic element 5514 is sleeved on each sliding rod 5513. Each elastic element 5514 is disposed between the top of the pressing block 5512 and the wall of the groove 5515.

[0046] In this embodiment, the pressure block 5512 can adaptively float according to the undulations of the surface of the speaker cover plate 1, so that the lower pressing surface is tightly and evenly fitted with each edge area and the pressure block 53 in the recess, and effectively avoids local overpressure damage or underpressure poor fit caused by rigid pressing.

[0047] like Figure 13 As shown, each set of side-push components 54 further includes a third slider 544 and a third slide rail 545. The third slide rail 545 is obliquely mounted on the body 51, the third slider 544 is slidably connected to the third slide rail 545, and the side-push block 542 is mounted on the third slider 544; thereby improving the sliding stability of the side-push block 542.

[0048] Preferably, step S6 includes the following steps: S61. Fold the edge allowance 21 of the composite component 4 located at the edge of the notch 13 towards the inner surface of the speaker cover. Specifically, this step only requires manual initial bending of the edge allowance 21 of the notch 13 to make it adhere to the inner surface of the speaker cover, without applying pressure. S62. Place the composite component 4 in the receiving groove 521 of the edge-binding device 5, so that the fabric faces the receiving groove, and insert the edge area of ​​the notch 13 into the insertion gap 534. S63. Control each of the third telescopic actuators 541 to drive the corresponding side push block 542 to move towards the receiving groove 521, so that one end of each side push block 542 near the receiving groove 521 is inserted under the guidance of the guide slope 5431 into the lower part of the corresponding edge binding allowance 21; continue to drive each side push block to move forward, so as to flip the edge binding allowance 21 upward and move the arc-shaped slope to the upper part of the speaker cover; continue to drive each side push block to move forward, so as to initially press the corresponding edge binding allowance 21 to the edge area of ​​the inner surface 12 of the speaker cover through the arc-shaped slope; S64. Control each of the third telescopic actuators 541 to drive the side push block 542 connected to it to move away from the receiving groove 521, so that each of the side push blocks 542 returns to its initial position. S65. Control the fourth telescopic actuator 552 to drive the lower pressing mold 551 downward. The area of ​​the lower pressing mold 551 corresponding to the notch pressing block presses the notch pressing block 53, so that the notch pressing block 53 moves downward and fits tightly against the edge area of ​​the notch 13. At the same time, the remaining area of ​​the lower pressing mold 551 fits tightly against the remaining edge areas of the speaker cover plate 1 except for the edge area of ​​the notch 13, thereby fully pressing the edge allowance 21 onto each edge area of ​​the inner surface 12 of the speaker cover plate; specifically, the pressing time is 20 seconds. S66. Control the fourth telescopic actuator 552 to drive the lower pressing mold 551 to move upward and remove the edge-wrapped composite component 4.

[0049] In this embodiment, the manual operator only performs a preliminary bending of the edge allowance 21 of the notch 13 towards the inner surface of the speaker cover, without applying pressure. This utilizes the flexibility of manual handling of irregularly shaped notches and avoids the difficulty of using complex mechanical mechanisms to directly edge-wrap the notch 13. The side push block is inserted below the edge allowance under the guide slope. After being flipped up and pre-pressed by the arc slope, it automatically completes the edge wrapping of the remaining edges except for the notch, without manual intervention, saving labor costs. The lower pressing mold 551 moves downward, and the area corresponding to the notch pressing block 53 first squeezes the notch pressing block 53 downward, so that the pressing part 532 fits tightly with the edge of the notch. At the same time, the other areas of the lower pressing mold simultaneously compact the remaining edge areas, ensuring that the edge allowance of each area is fully bonded to the edges of the inner surface, effectively eliminating wrinkles, bulges or loose bonding, and significantly improving the edge bonding strength and appearance flatness.

[0050] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A fabric attaching and edging process for an irregularly shaped speaker cover with a notch, the speaker cover comprising an outer surface and an inner surface, wherein the speaker cover has at least one notch; characterized in that, The process includes the following steps: S1. Fabric cutting: Laser cutting of the fabric to obtain fabric material for attachment to the speaker cover; S2. Glue spraying treatment: The speaker cover plate is placed in a glue spraying machine, and glue is sprayed onto the outer surface of the speaker cover plate through the glue spraying machine. S3. Attaching fabric: The fabric and the speaker cover plate after spraying adhesive are placed in an attachment and pressing device. The fabric is pressed and attached to the outer surface of the speaker cover plate by the attachment and pressing device to form a composite component in which the fabric and the speaker cover plate are bonded together. S4. Allowance cutting: The fabric in the composite component is laser-cut according to the shape of the speaker cover. After cutting, the edge of the fabric retains a preset width of edge allowance relative to the edge of the speaker cover. S5. Glue application: The cut composite components are clamped in a glue application machine, and glue is applied to the edge area on the inner surface of the speaker cover where the edge binding allowance needs to be attached. S6. Edge binding treatment: Place the glued composite component in the edge binding equipment, and use the edge binding equipment to press and attach the edge binding allowance of the fabric to the glued edge area on the inner surface of the speaker cover. S7. Pressure holding treatment: The edge-bound composite component is placed in a pressure holding device for pressure holding treatment. After the pressure holding time reaches the predetermined value, the edge-bound product is obtained. S8. Inspection: Inspect whether the edge-sealing product is qualified.

2. The fabric pasting and edging process for the irregularly shaped speaker cover with a notch as described in claim 1, characterized in that: In step S1, the fabric obtained by cutting is a rectangular sheet, and several positioning holes are processed at each edge of the fabric by laser cutting.

3. The fabric pasting and edging process for the irregularly shaped speaker cover with a notch as described in claim 2, characterized in that: The bonding and pressing equipment includes: frame; The upper mold assembly includes an upper template and a first telescopic driver, which is mounted on the frame and is used to drive the upper template to move up and down. A lower mold assembly is disposed below the upper mold assembly, and the lower mold assembly includes a lower template that is horizontally slidably connected to the frame; The fabric stretching assembly includes a positioning frame and a second telescopic driver. The positioning frame is located between the upper template and the lower template. The top of the positioning frame is provided with positioning pins that correspond one-to-one with the positioning holes. The second telescopic driver is mounted on the frame and is used to drive the positioning frame to move up and down.

4. The fabric pasting and edging process for the irregularly shaped speaker cover with a notch as described in claim 3, characterized in that: The lower mold assembly further includes a first slide rail and a first slider. The first slide rail is horizontally fixedly connected to the frame, and the first slider is installed at the bottom of the lower mold plate. The first slider slides in slidable engagement with the first slide rail. The fabric stretching assembly further includes a second slide rail and a second slider. The second slide rail is vertically fixedly connected to the fixed end of the second telescopic driver, and the second slider is fixedly connected to the movable end of the second telescopic driver. The second slider slides in slidable engagement with the second slide rail, and the positioning frame is fixedly connected to the second slider.

5. The fabric pasting and edging process for the irregularly shaped speaker cover with a notch as described in claim 3 or 4, characterized in that: Step S3 includes the following steps: S31. Pull the lower template out horizontally and control the second telescopic driver to drive the positioning frame to move downward, place the glued speaker cover on the lower template, and set the several positioning holes of the fabric onto the several positioning nails to make the fabric taut and fixed on the positioning frame. S32. Control the second telescopic driver to drive the positioning frame to move upward and push the lower template horizontally inward back to below the positioning frame; S33. Control the second telescopic driver to drive the positioning frame to move downward so that the fabric covers the speaker cover; S34. Control the first telescopic driver to drive the upper template downward to press the fabric and the speaker cover together, and then separate the several positioning holes of the fabric from the several positioning pins. S35. After pressing for a predetermined time, a composite component is formed in which the fabric and the speaker cover are bonded together. S36. Control the second telescopic driver to drive the positioning frame to move upward and pull the lower template out horizontally to remove the composite component.

6. The fabric pasting and edging process for the irregularly shaped speaker cover with a notch as described in claim 1, characterized in that: The edge-binding equipment includes: Organism; The lower mold base is fixedly connected to the machine body, and a receiving groove is formed on the top of the lower mold base; The notched pressure block has the same number as the notches. Each notched pressure block includes a guide portion and a pressing portion at the top of the guide portion. A guide groove is formed in the bottom of the receiving groove to accommodate the guide portion. Several springs are disposed in the guide groove, with their ends respectively abutting against the bottom surface of the guide portion and the bottom surface of the guide groove. The edge of the pressing portion protrudes outward relative to the edge of the guide portion, and an insertion gap is formed between the bottom surface of the pressing portion and the bottom surface of the receiving groove. This insertion gap is used to accommodate the edge region of the notch. Multiple sets of side-push assemblies are distributed around the outer periphery of the lower mold base. Each set of side-push assemblies includes a third telescopic driver and a side-push block. The third telescopic driver is mounted on the machine body and is used to drive the side-push block to move obliquely. The side-push block has an action surface on the side near the receiving groove. The pressing assembly includes a pressing die and a fourth telescopic actuator. The pressing die is located above the lower die base, and a pressing surface is formed at the bottom of the pressing die. The fourth telescopic actuator is used to drive the pressing die to move up and down.

7. The fabric pasting and edging process for the irregularly shaped speaker cover with a notch as described in claim 6, characterized in that: The working surface includes a guide slope and an arc-shaped slope arranged sequentially from top to bottom. The guide slope is inclined from top to bottom toward the receiving groove, and the arc-shaped slope is smoothly connected to the bottom surface of the side push block.

8. The fabric pasting and edging process for the irregularly shaped speaker cover with a notch as described in claim 7, characterized in that: The pressing die includes a pressing base, a pressing block, several sliding rods, and several elastic elements. The bottom of the pressing base has a groove, and the pressing block is movably disposed within the groove. The pressing surface is formed on the bottom of the pressing block. The pressing base has several sliding holes communicating with the groove. A sliding rod is slidably disposed in each of the sliding holes, and the bottom end of each sliding rod is connected to the top of the pressing block. An elastic element is sleeved on each sliding rod, and each elastic element is disposed between the top of the pressing block and the wall of the groove.

9. The fabric attaching and edging process for the irregularly shaped speaker cover with a notch as described in claim 7, characterized in that: Each of the side-push components further includes a third slider and a third slide rail. The third slide rail is obliquely mounted on the body, the third slider is slidably connected to the third slide rail, and the side-push block is mounted on the third slider.

10. The fabric attaching and edging process for the irregularly shaped speaker cover with a notch according to any one of claims 7-9, characterized in that: Step S6 includes the following steps: S61. Fold the edge allowance of the composite component after dispensing towards the inner surface of the speaker cover plate in the area of ​​the notch. S62. Place the composite component in the receiving groove of the edge-binding device, so that the fabric faces the receiving groove, and insert the edge area of ​​the notch into the insertion gap; S63. Control each of the third telescopic actuators to drive the corresponding side push blocks to move towards the receiving groove, so that the end of each side push block near the receiving groove is inserted below the corresponding edge allowance under the guidance of the guide slope; continue to drive each side push block to move forward, so as to cause the edge allowance to flip up and move the arc-shaped slope to the top of the speaker cover; then continue to drive each side push block to move forward, so as to initially press the corresponding edge allowance to the edge area of ​​the inner surface of the speaker cover through the arc-shaped slope; S64. Control each of the third telescopic actuators to drive the side push blocks connected to them to move away from the receiving slot, so that each of the side push blocks returns to its initial position. S65. Control the fourth telescopic driver to drive the lower pressing mold downward. The area of ​​the lower pressing mold corresponding to the notch pressing block presses the notch pressing block, so that the notch pressing block moves downward and fits tightly against the edge area of ​​the notch. At the same time, the remaining area of ​​the lower pressing mold fits tightly against the remaining edge areas of the speaker cover plate except for the edge area of ​​the notch, thereby fully pressing the edge allowance onto each edge area of ​​the inner surface of the speaker cover plate. S66. Control the fourth telescopic driver to drive the lower pressing mold to move upward and remove the edge-wrapped composite component.

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