A processing technology for connecting a buckle to prevent glue corrosion or wear of a base material

Abstract

The present application belongs to the technical field of processing of connecting buckles of decorative parts, and particularly relates to a processing technology of connecting buckles for preventing glue corrosion or wear of base materials, comprising the following steps: S1: selecting connecting part one or connecting part two as the installation base of the decorative part; S2: preparing the connecting buckle, after the connecting buckle is formed, the two ends of the connecting support part are connected with the connecting part one and the connecting part two respectively, and the upper end surface of the connecting part one or the connecting part two serving as the installation base of the decorative part is sequentially provided with a glue convex platform, an annular glue containing concave cavity and a glue isolation ring from the center to the outer periphery; S3: uniformly coating the glue on the surface of the glue convex platform; and S4: covering a layer of tearable film layer outside the glue. The connecting buckle processed by the processing technology can realize isolation and centralized storage of the excess glue during installation of the decorative part, avoid the glue from spreading to the exposed area on the back of the decorative part and the outer surface of the base material, and thus significantly reduce the pollution and wear caused by the glue overflow and dry glue residue.

Description

Technical Field

[0001] This invention belongs to the field of processing technology for decorative fasteners, specifically relating to a processing technology for a fastener that prevents adhesive from corroding or wearing the substrate. Background Technology

[0002] In the fields of footwear, bags, clothing, hats, and upholstered furniture, the main methods for attaching various decorative elements to the product surface include the following: 1. Traditional mechanical riveting method of I-beam buckle / rivet buckle: mechanical locking is achieved by plastic deformation of the upper and lower fasteners and rivets. The substrate must be drilled and the hole diameter and tolerance are relatively strict. Once installed, it is not easy to disassemble and replace. It is inconvenient to install on some thicker or multi-layer substrates (such as filled sofa fabrics). 2. Full-surface adhesive bonding method: Apply adhesive to a large area on the back of the decorative part or the surface of the fastener plate, and then press it onto the substrate surface. The process is simple, but it generally has the following problems: (1) Serious glue overflow problem: During the pressing process, excess glue is almost inevitably squeezed out from the edge of the joint surface, forming glue stains and flow marks on exposed areas such as shoe uppers, clothing, bag uppers, and sofa fabrics. Especially for light-colored, suede, or high-gloss materials, the marks are particularly obvious, seriously affecting the appearance and product grade. (2) Risk of yellowing and corrosion of materials: Solvent-based or partially reactive adhesives may cause yellowing, corrosion and softening of leather, coated fabrics, electroplated metal parts, etc. After long-term use, a noticeable yellow mark or hardened area may form around the ornament, affecting the service life and user experience. (3) Bubble and loose bonding: When the adhesive surface is a large flat area, air is not easy to be completely expelled during the pressing process, which can easily form bubbles or local hollows in the adhesive layer; the bonding interface has loose bonding, resulting in insufficient bonding strength, and the decorative parts are easy to loosen or fall off during daily use. (4) Difficult to control the use of glue and poor assembly consistency: The existing fastener panel lacks effective glue limiting and flow guiding design. The glue application area and amount basically depend on the operator's experience. Too much glue will cause serious overflow, and too little glue will not stick properly. In mass production, the assembly quality fluctuates greatly, the defect rate is high, and there are many rework, which is not conducive to stable quality control. (5) Hazards of glue residue after drying: Even if the excess glue in visible areas is wiped off after assembly, the residual glue layer will still harden and remain on the back of the ornament for a long time. Since the side of the traditional fastener facing the ornament is the glue surface, the excess glue will usually form a ring or multiple irregular dry glue residues on the back of cartoon cultural and creative ornaments such as shoe flowers, dolls, and toys. During actual wearing, carrying, and placement, the ornament will swing, and the dry glue layer on its back will repeatedly come into contact with the surfaces of shoes, bags, clothes, sofa fabrics, etc., accompanied by friction. Many adhesives have high hardness after curing, and the edges are mostly irregular sharp edges. Long-term friction can easily cause scratches, whitening, paint peeling, and plating peeling on shoe surfaces, bag surfaces, clothes, and sofa fabrics. For suede, knitted fabrics, or napped fabrics, damage such as snagging, pilling, and shedding will occur. In addition, there are issues with residual stickiness and stain accumulation. Some adhesives, even if the surface appears dry, retain a certain degree of stickiness or release plasticizers under high temperature or humid conditions, easily attracting dust, fibers, hair, etc., forming stubborn stains such as black and yellow circles on the back of the ornaments and contact areas. They may also cause stickiness and discomfort when in contact with clothing or skin. Finally, there are issues with chemical migration and surface degradation. Low-molecular-weight substances in some adhesives can slowly migrate to the surface of adjacent materials, causing softening, stickiness, localized loss of gloss, or stains on PU, TPU, PVC, EVA coatings, artificial leather, and spray-painted surfaces, forming marks that are difficult to remove.

[0003] In summary, traditional full-surface glued structures not only result in excessive glue overflow and poor appearance during the assembly stage, but even after the glue has completely dried, the dry glue layer remaining on the back of shoe ornaments, dolls, and other accessories will continue to cause wear and contamination to the surface of products such as shoes, bags, clothing, and sofas during long-term use, making it difficult to meet the requirements of mid-to-high-end products for appearance stability and user experience. Summary of the Invention

[0004] The technical problem this invention aims to solve is to address the shortcomings of existing technologies by providing a processing technology for connecting buckles that prevents glue from corroding or abrading the substrate. Connecting buckles processed using this invention can isolate and centrally collect excess glue during the installation of decorative parts, preventing glue from spreading to exposed areas on the back of shoe ornaments, dolls, plush toys, and other decorative parts, as well as to the outer surface of substrates such as shoe uppers, bag uppers, clothing, and sofas. This significantly reduces pollution and wear caused by glue overflow and dry glue residue, improving the assembly appearance quality and long-term reliability.

[0005] This solution is achieved through the following technical measures: a processing technology for a connector buckle that prevents adhesive from corroding or abrading the substrate, comprising the following steps: S1: Determine the installation base for the decorative component: Select connector one or connector two as the installation base for the decorative component; S2: Fabrication of Connecting Buckle: The connecting buckle is fabricated using an integral molding method. After the connecting buckle is formed, both ends of its connecting support are connected to Connector 1 and Connector 2 respectively. The upper end face of Connector 1 or Connector 2, which serves as the base for installing the decorative part, consists of an adhesive boss, an annular adhesive cavity, and an adhesive isolation ring from the center outward. The adhesive boss is used to install the decorative part, the annular adhesive cavity is used to collect excess adhesive during the pressing process of the decorative part, and the adhesive isolation ring is used to block the adhesive in the annular adhesive cavity. S3: Apply adhesive: Apply adhesive evenly to the surface of the adhesive boss.

[0006] Preferably, the connecting support in step S2 includes at least three connecting rods. The upper and lower ends of each connecting rod are connected to connecting part one and connecting part two, respectively. The vertical geometric center line of each connecting rod forms a multi-faceted truncated pyramid along the circumferential direction. Each connecting rod is used to support the mounting hole of the substrate when the fastener is installed on the substrate, so that the adhesive boss and the cured adhesive are suspended above the surface of the substrate, thereby achieving a non-contact physical isolation between the area containing adhesive residue and the surface of the substrate.

[0007] Preferably, in step S2, during the forming process of the connecting buckle, a flow-guiding and venting structure is integrally formed on the adhesive boss. The flow-guiding and venting structure has a groove on the upper end face of the adhesive boss. The groove is used to create a gap between the adhesive boss and the back bearing surface of the decorative part when the adhesive boss is connected to the decorative part. During the pressing process between the adhesive boss and the back bearing surface of the decorative part, the air and excess glue in the glue are discharged through the gap.

[0008] Preferably, in step S3, the adhesive boss and the annular adhesive cavity need to undergo surface energy differentiation treatment before applying the adhesive.

[0009] Preferably, the method for differentiating the surface energy of the adhesive boss and the annular adhesive cavity is as follows: the adhesive boss is treated with adhesive affinity, and the surface energy of the adhesive boss after adhesive affinity treatment is ≥40mN / m. A low surface energy coating with a surface energy of ≤20mN / m is applied to the surface of the annular adhesive cavity, so that the inner side of the connector one or connector two, which serves as the mounting base for the decorative part, is adhesive-friendly and the outer side is non-adhesive.

[0010] Preferably, in step S2, after the connecting buckle is formed, the upper end face of the adhesive boss is 0.3 to 3.0 mm higher than the upper end face of the adhesive isolation ring, the ratio of the diameter of the adhesive boss to the diameter of the connecting part one or connecting part two is 0.30 to 0.90, and the width of the adhesive cavity of the ring is 0.5 to 3.0 mm.

[0011] Preferably, the groove in the airflow guiding and exhaust structure is a radial groove, an annular groove, or a mesh-like groove, with a groove width of 0.2–0.8 mm and a groove depth of 0.1–0.5 mm; The upper surface of the adhesive boss is an embossed surface, or the upper surface of the adhesive boss is provided with several protrusions.

[0012] Preferably, after the connecting buckle is formed in step S2, the lower end face of the connecting part 2 or connecting part 1 opposite to the end where the adhesive boss is located is a curved surface, and the opposite sides of connecting part 1 and connecting part 2 are parallel. The outer contour shape of connecting part 1 and connecting part 2 is a circle, an ellipse or a rounded polygon, and the outer contour shape of the adhesive boss is the same as the outer contour shape of the connecting part 1 or connecting part 2 to which it is located.

[0013] Preferably, the adhesive used in step S3 is one or more of cyanoacrylate instant adhesive, acrylic structural adhesive, polyurethane adhesive, hot melt adhesive, or UV curable adhesive.

[0014] Preferably, the adhesive treatment method for the adhesive boss is plasma activation, chemical roughening or sandblasting roughening, and the low surface energy coating applied to the surface of the annular adhesive cavity is a fluorine coating or a silicon coating.

[0015] The beneficial effects of this invention are: 1. In the connecting buckle processed by the present invention, the vertical geometric center line of each connecting rod forms a multi-faceted truncated pyramid along the circumference. The support of each connecting rod makes the connecting part one or connecting part two, which serves as the mounting base for the decorative part, move away from the outer surface of the substrate, thus reducing the harm of glue. 2. In the connecting buckle processed by the present invention, the middle part of the connecting part one or the connecting part two is an adhesive boss, the radial outer periphery of the adhesive boss is an annular adhesive cavity, and the radial outer periphery of the annular adhesive cavity is an adhesive isolation ring, so that the adhesive is only applied in the limited area (adhesive boss), and the excess adhesive is collected by the annular adhesive cavity of the structure itself, preventing the adhesive from spreading to the exposed area on the back of shoe flowers, dolls, dolls and other ornaments, and the outer surface of the substrate such as shoe upper, bag upper, clothing, sofa, etc., thereby significantly reducing the pollution and wear caused by adhesive overflow and dry adhesive residue, and improving the assembly appearance quality and long-term reliability. 3. The connecting buckle processed by this invention is compatible with various soft or semi-rigid substrates such as shoes, hats, clothes, bags, and sofas. At the same time, the support structure is stable and not easy to shake. It is also suitable for assembling decorative parts with a high center of gravity, such as three-dimensional dolls and toys. 4. The connecting buckle processed by this invention facilitates automatic dispensing and automated assembly, improving production efficiency and consistency; 5. This invention can reduce the problems caused by solvent-based or partially reactive adhesives in the prior art, such as yellowing, corrosion, and softening of leather, coated fabrics, and electroplated metal parts, which affect service life and user experience. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the connecting buckle in this invention.

[0017] Figure 2 This is a schematic diagram of the structure of the present invention when the upper end surface of the adhesive boss is flat.

[0018] Figure 3 This is a schematic diagram of the structure of the present invention when a groove is formed on the upper end face of the adhesive boss. Figure 1 .

[0019] Figure 4 This is a schematic diagram of the structure of the present invention when a groove is formed on the upper end face of the adhesive boss. Figure 2 .

[0020] Figure 5 This is a schematic diagram of the connection structure between the decorative part and the connecting buckle.

[0022] In the diagram, 1-Connector 1, 2-Connecting support, 3-Connector 2, 4-Connecting rod, 5-Annular adhesive cavity, 6-Adhesive boss, 7-Adhesive isolation ring, 8-Groove, 9-Decorative part, 10-Base material. Detailed Implementation

[0023] To clearly illustrate the technical features of this solution, the following detailed implementation method, in conjunction with its accompanying drawings, will be used to describe the solution.

[0024] A processing method for a connector buckle that prevents adhesive from corroding or abrading the substrate includes the following steps: S1: Determine the installation base of decorative component 9: Select connector 1 or connector 2 as the installation base of decorative component 9; S2: Preparation of connecting buckle: The connecting buckle is prepared by one-piece molding. After the connecting buckle is formed, the two ends of its connecting support 2 are connected to connecting part 1 and connecting part 2 3 respectively. The upper end surface of connecting part 1 or connecting part 2 3, which serves as the mounting base for decorative part 9, consists of an adhesive boss 6, an annular adhesive cavity 5 and an adhesive isolation ring 7 from the center to the outer periphery. The adhesive boss 6 is used to install decorative part 9. The annular adhesive cavity 5 is used to collect excess adhesive during the pressing process of decorative part 9. The adhesive isolation ring 7 is used to block the adhesive in the annular adhesive cavity 5. Either connector 1 or connector 2 can be chosen as the mounting base for decorative component 9: When connector 1 is used to install decorative part 9, an annular rubber cavity 5 is provided on the upper end face of connector 1 in the circumferential direction; When connector 2 3 is used to install decorative part 9, an annular rubber cavity 5 is provided on the upper end face of connector 2 3 in the circumferential direction; The upper end of connector 1 or connector 3 is divided into two parts by the annular adhesive cavity 5. The part located inside the annular adhesive cavity 5 is the adhesive boss 6, and the part located outside the annular adhesive cavity 5 is the adhesive isolation ring 7. The adhesive boss 6, the annular adhesive cavity 5 and the adhesive isolation ring 7 form an anti-seepage adhesive structure.

[0025] S3: Apply adhesive: Apply adhesive evenly to the surface of the adhesive boss 6. The adhesive used is one or more of the following: cyanoacrylate instant adhesive, acrylic structural adhesive, polyurethane adhesive, hot melt adhesive or UV curable adhesive.

[0026] A removable film layer can be applied to the outside of the adhesive to complete the processing of the fastener. The film layer can prevent the pre-applied adhesive from being contaminated or prematurely cured. During on-site installation, the operator only needs to peel off the film layer to directly press the end face of the adhesive boss 6 with the receiving surface of the decorative part 9, achieving peel-and-stick application. This can significantly improve assembly speed and consistency, and is especially suitable for mass production scenarios of cultural and creative decorative parts such as shoe flowers, dolls, and plush toys.

[0027] In step S2, the connecting support 2 includes at least three connecting rods 4. The upper and lower ends of each connecting rod 4 are connected to connecting part 1 and connecting part 3, respectively. The vertical geometric center line of each connecting rod 4 forms a multi-faceted truncated pyramid (preferably a triangular or quadrangular truncated pyramid) along the circumferential direction. Each connecting rod 4 is used to support the fastener in the mounting hole of the substrate 10 when it is installed on the substrate 10, so that the adhesive boss 6 and the cured adhesive are suspended above the surface of the substrate 10, achieving a non-contact physical isolation between the area containing adhesive residue and the surface of the substrate 10. With this structural form of the connecting support 2, after the fastener is installed on the substrate 10, each connecting rod 4 can be stably supported in the mounting hole of the substrate 10 to ensure support stability, thereby ensuring the installation stability of the fastener. This connecting support 2 significantly improves the bending and torsional resistance. Combined with the perforated substrate 10 and the arrangement of each connecting rod 4, it achieves a composite connection of mechanical positioning and adhesive bonding of the decorative part 9 on the substrate 10, while keeping the overflowing adhesive away from the substrate surface.

[0028] After the connecting buckle is formed in step S2, the upper surface of the adhesive boss 6 is 0.3-3.0 mm (preferably 0.6-1.5 mm) higher than the upper surface of the adhesive isolation ring 7. The ratio of the diameter of the adhesive boss 6 to the diameter of the connecting part 1 or connecting part 3 is 0.30-0.90, and the width of the annular adhesive cavity 5 is 0.5-3.0 mm. In actual use, the dry adhesive layer on the back of the decorative part 9 is mainly confined to the vicinity of the adhesive boss 6 and located in the concave annular adhesive cavity 5, reducing direct frictional contact between the dry adhesive layer and the surfaces of shoes, bags, clothing, sofas, etc. This helps to reduce long-term damage problems such as scratches, whitening, paint peeling, snagging, and pilling. It also prevents glue from flowing and accumulating on the back of decorative parts 9 such as shoe flowers, dolls, and plush toys, ensuring that the glue does not overflow into the visible area, thereby reducing the risk of long-term wear and contamination.

[0029] After the connecting buckle in this invention is formed, the lower end surface of the connecting part 2 3 or connecting part 1, which is opposite to the end where the adhesive boss 6 is located, is a curved surface. That is, when connecting part 1 is used to install the decorative part 9, the lower end surface of connecting part 2 3 is a curved surface; when connecting part 2 3 is used to install the decorative part 9, the lower end surface of connecting part 1 is a curved surface. This curved surface can be a spherical surface, an arc surface, etc. The curved surface can better fit the slightly curved or softly deformed substrate surface (such as the upper surface of a shoe or the stress surface of a sofa), making the contact smoother during installation and the local stress more uniform, which helps to avoid sharp indentations on the substrate 10; the curved end surface also helps to automatically adjust the posture during the assembly process, so that the adhesive boss 6 and the bearing surface of the decorative part 9 are better aligned.

[0030] The outer contours of connector 1 and connector 3 are circular, elliptical, or rounded polygonal, with the specific shape selected based on the decorative component 9 and load-bearing requirements. The opposite sides of connector 1 and connector 3 are parallel to ensure better fit between connector 1 and connector 3 when the connector is installed on the substrate 10, guaranteeing a secure installation. The outer contour of the adhesive boss 6 is the same as that of the corresponding connector 1 or connector 3, and the adhesive boss 6 is coaxial with the corresponding connector 1 or connector 3, or the adhesive boss 6 is located at the geometric center of connector 1 or connector 2. The outer contour of the adhesive boss 6 is the same as that of the corresponding connector 1 or connector 2, and can be circular, elliptical, or rounded polygonal.

[0031] In this invention, the end face of the adhesive boss 6 is the adhesive surface, used to bond with the receiving surface on the back of decorative parts such as shoe ornaments, dolls, and plush toys. When connecting the decorative part 9 to the fastener, because the adhesive is only applied to the end face of the adhesive boss 6, the glue overflowing during pressing preferentially flows into the annular adhesive cavity 5 and is collected by the annular adhesive cavity 5. The glue is difficult to climb further over the glue isolation ring 7 and flow to the outer edge of the first connector 1 or the second connector 3 and the exposed area of ​​the first connector 1 or the second connector 3. In addition, compared with the traditional I-beam buckle, the fastener of this invention only adds the adhesive boss 6, the annular adhesive cavity 5, the glue isolation ring 7, and the connecting rod 4 to the first connector 1 or the second connector 3. The mold modification is relatively limited, and the manufacturing cost increases slightly, but the improvement in glue leakage prevention, pollution prevention, and wear prevention is very significant, and the cost performance is high. In addition, the adhesive is concentrated on the end face of the adhesive boss 6, making the thickness easier to control, the stress distribution more reasonable, the dispensing area smaller and the position fixed, which is conducive to standardized operation and precise positioning of automatic dispensing equipment, reducing quality fluctuations caused by differences in human experience, and helping to improve yield and production efficiency.

[0032] In step S2, the upper surface of the glued boss 6 after the fastener is formed is flat (e.g., Figure 2 (as shown), or, during the fastener forming process in step S2, a drainage and venting structure is integrally formed on the adhesive boss 6. The drainage and venting structure is a groove 8 formed on the upper end face of the adhesive boss 6 (as shown). Figure 3 and Figure 4 As shown in the diagram, the groove 8 can be a radial groove, an annular groove, or a mesh groove, with a width of 0.2–0.8 mm and a depth of 0.1–0.5 mm. The groove 8 is used to create a gap between the adhesive boss 6 and the back surface of the decorative part 9 when they are connected. During the pressing process between the adhesive boss 6 and the back surface of the decorative part 9 (such as shoe flowers, dolls, or plush toys), air and excess glue in the adhesive are discharged through this gap, preventing air pockets caused by air accumulation. It also guides the glue to flow into the annular adhesive cavity 5 and increases the bonding shear strength, ensuring a firm bond to the decorative part 9. Finally, excess glue overflows along the outer edge of the adhesive boss 6 and is collected in the annular adhesive cavity 5. After the glue cures, a strong bond is formed between the end face of the adhesive boss 6 and the back surface of the decorative part 9.

[0033] The upper surface of the adhesive boss 6 is an embossed surface, or the upper surface of the adhesive boss 6 is provided with several protrusions. That is, after the groove 8 is opened in the upper surface of the adhesive boss 6, the remaining upper surface is embossed with patterns or provided with several protrusions. The embossed surface and protrusions can increase the contact area between the adhesive and the upper surface of the adhesive boss 6, which is conducive to enhancing the connection between the adhesive boss 6 and the decorative part.

[0034] In step S3, before applying the adhesive, the adhesive boss 6 and the annular adhesive cavity 5 need to undergo surface energy differentiation treatment. The method for this treatment is as follows: the adhesive boss 6 undergoes an adhesive affinity treatment, which can be achieved through plasma activation, chemical roughening, or sandblasting. After this treatment, the surface energy of the adhesive boss 6 is ≥40 mN / m. A low surface energy coating with a surface energy ≤20 mN / m is then applied to the surface of the annular adhesive cavity 5. This low surface energy coating is either a fluorine coating or a silicon coating, making it difficult for the adhesive to diffuse and wet within the cavity. After this treatment, the inner side of the connector 1 or connector 3, which serves as the mounting base for the decorative component 9, becomes adhesive-friendly, while the outer side becomes non-adhesive. This surface energy difference causes the adhesive to tend to concentrate on the end face of the adhesive boss 6 and within the annular adhesive cavity 5, further suppressing adhesive overflow.

[0035] In the connecting buckle obtained by the processing technology of the present invention, the connecting support 2 is used to support the mounting hole on the substrate 10, the adhesive boss 6 is located outside the mounting hole and connected to the decorative part 9, and the connecting part 2 3 or connecting part 1 opposite to the adhesive boss 6 is located inside the mounting hole to limit the entire connecting buckle and prevent the connecting buckle from detaching from the mounting hole.

[0036] When the connecting buckle obtained by the processing technology of the present invention is bonded to the decorative part 9, the film layer is first peeled off, and the adhesive boss 6 is pressed to the receiving surface on the back of the decorative part 9. During the pressing process, excess glue overflows along the outer edge of the adhesive boss 6 and enters the annular adhesive cavity 5 for collection. After the glue is cured, the bonding connection between the decorative part 9 and the connecting buckle can be achieved.

[0037] When the connector with decorative part 9 is installed on the substrate 10, the connector 2 3 or connector 1 opposite to the end of the decorative part 9 is aligned with the mounting hole on the substrate 10 and pressed into the mounting hole, so that connector 2 3 or connector 1 passes through the mounting hole and the connecting support 2 passes through the mounting hole. The connecting support 2 provides support for the connector in the mounting hole area of ​​the substrate 10, so that the lower end face of connector 1 1 or connector 2 3, which serves as the mounting base for the decorative part 9, fits against the substrate 10, thus completing the installation of the connector on the substrate 10.

[0038] The following example illustrates the installation method of the connectors with different decorative parts 9 on different substrates 10: (a) When decorative part 9 is a shoe ornament applied to Crocs and connector 1 serves as the mounting base for the shoe ornament: First, bond the shoe ornament to the connecting buckle: peel off the film layer, press the adhesive protrusion 6 to the receiving surface on the back of the shoe ornament, and during the pressing process, excess glue overflows along the outer edge of the adhesive protrusion 6 and enters the annular adhesive cavity 5 for collection. After the glue cures, a firm and controllable glue overflow bonding connection can be achieved between the shoe ornament and the connecting buckle. Then install the connector on the Crocs: Align connector 2 3 with the mounting hole on the Crocs and press it into the mounting hole so that connector 2 3 passes through the mounting hole and each connecting rod 4 passes through the mounting hole on the Crocs, so that the lower end face of connector 1 fits against the upper of the Crocs, thus completing the installation of the connector on the Crocs.

[0039] (ii) When decorative part 9 is a doll applied to a hat and connector 1 serves as the mounting base for shoe ornaments: First, bond the doll to the connecting buckle: peel off the film layer, press the adhesive protrusion 6 to the receiving surface on the back of the doll, and during the pressing process, excess glue overflows along the outer edge of the adhesive protrusion 6 and enters the annular adhesive cavity 5 for collection, ensuring that the glue on the back of the doll does not overflow into the visible area. After the glue cures, the bonding connection between the doll and the connecting buckle can be achieved. Then install the connecting buckle on the hat: pre-punch mounting holes on the brim of the hat, align the second connector 3 with the mounting holes on the hat and press it into the mounting holes so that the second connector 3 passes through the mounting holes and each connecting rod 4 passes through the mounting holes on the hat, so that the lower end face of the first connector 1 fits against the surface of the brim of the hat, thus completing the installation of the connecting buckle on the hat and fixing the doll to the brim of the hat.

[0040] (iii) When decorative part 9 is a doll applied to a backpack and connector 2 3 serves as the mounting base for the doll: First, bond the doll to the connecting buckle: peel off the film layer, press the adhesive protrusion 6 to the receiving surface on the back of the doll, and during the pressing process, excess glue overflows along the outer edge of the adhesive protrusion 6 and enters the annular adhesive cavity 5 for collection. After the glue cures, the bonding connection between the doll and the connecting buckle can be achieved. Then install the connecting buckle on the backpack: Drill mounting holes on the front panel of the backpack, align connector 1 with the mounting holes on the backpack and press it into the mounting holes so that connector 1 passes through the mounting holes and each connecting rod 4 passes through the mounting holes on the backpack, so that the lower end face of connector 3 fits against the surface of the backpack, thus completing the installation of the connecting buckle on the backpack, thereby fixing the doll to the backpack. Each connecting rod 4 can improve the overall anti-shaking ability and ensure the doll is firmly installed on the backpack.

[0041] (iv) When decorative part 9 is a cartoon ornament applied to a sofa cushion and connector 1 serves as the mounting base for the cartoon ornament: First, bond the cartoon ornament to the connecting buckle: peel off the film layer, press the adhesive protrusion 6 to the receiving surface on the back of the cartoon ornament, and during the pressing process, excess glue overflows along the outer edge of the adhesive protrusion 6 and enters the annular adhesive cavity 5 for collection. After the glue cures, the bonding connection between the cartoon ornament and the connecting buckle can be achieved. Then, install the connector on the sofa cushion: punch mounting holes in a portion of the sofa cushion fabric, align connector 2 3 with the mounting holes on the sofa cushion and press it into the mounting holes, so that connector 2 3 passes through the mounting holes and each connecting rod 4 passes through the mounting holes on the sofa cushion, so that the lower end face of connector 1 fits against the surface of the sofa cushion, completing the installation of the connector on the sofa cushion, thereby installing the cartoon decoration on the sofa cushion. During the pressing and use process, the risk of dry adhesive residue causing wear to the fabric is significantly reduced.

[0042] Technical features not described in this invention can be implemented using existing technologies and will not be elaborated upon here. This invention is not limited to the specific embodiments described above; any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of this invention should also fall within the protection scope of this invention.

Claims

1. A processing method for a connector buckle that prevents adhesive from corroding or abrading the substrate, characterized in that, The process includes the following steps: S1: Determine the installation base for the decorative part: Select connector one or connector two as the installation base for the decorative part; S2: Prepare the connecting buckle: Prepare the connecting buckle using an integral molding method. After the connecting buckle is formed, its two ends of the connecting support are connected to connector one and connector two respectively. The upper end face of connector one or connector two, which serves as the installation base for the decorative part, consists of an adhesive boss, an annular adhesive cavity, and an adhesive isolation ring from the center outward. The adhesive boss is used to install the decorative part, the annular adhesive cavity is used to collect excess adhesive during the pressing process of the decorative part, and the adhesive isolation ring is used to block the adhesive in the annular adhesive cavity; S3: Apply adhesive: Apply adhesive evenly to the surface of the adhesive boss.

2. The processing technology of the connecting buckle for preventing glue corrosion or wear on the substrate according to claim 1, characterized in that, The connecting support in step S2 includes at least three connecting rods. The upper and lower ends of each connecting rod are connected to connecting part one and connecting part two, respectively. The vertical geometric center line of each connecting rod forms a multi-faceted truncated pyramid along the circumferential direction. Each connecting rod is used to support the mounting hole of the substrate when the fastener is installed on the substrate, so that the adhesive boss and the cured adhesive are suspended above the surface of the substrate, achieving a non-contact physical isolation between the area containing adhesive residue and the surface of the substrate.

3. The processing technology of the connecting buckle for preventing glue corrosion or wear on the substrate according to claim 2 is characterized in that, In step S2, during the fastener forming process, a flow-guiding and venting structure is integrally formed on the adhesive boss. The flow-guiding and venting structure has a groove on the upper surface of the adhesive boss. The groove is used to create a gap between the adhesive boss and the back surface of the decorative part when the adhesive boss is connected to the decorative part. During the pressing process between the adhesive boss and the back surface of the decorative part, the air and excess glue in the glue are discharged through the gap.

4. The processing technology of the connecting buckle for preventing glue corrosion or wear on the substrate according to claim 1, 2 or 3, characterized in that, In step S3, the adhesive boss and the ring-shaped adhesive cavity need to be treated with surface energy differentiation before applying the adhesive.

5. The processing technology of the connecting buckle for preventing glue corrosion or wear on the substrate according to claim 4, characterized in that, The method for differential surface energy treatment of adhesive bosses and annular adhesive cavities is as follows: adhesive bosses are treated with adhesive affinity, and the surface energy of adhesive bosses after adhesive affinity treatment is ≥40mN / m. A low surface energy coating with a surface energy of ≤20mN / m is applied to the surface of annular adhesive cavities, so that the inner side of connector one or connector two, which serves as the mounting base for decorative parts, is adhesive-friendly and the outer side is non-adhesive.

6. The processing technology of the connecting buckle for preventing glue corrosion or wear on the substrate according to claim 5, characterized in that, In step S2, after the connecting buckle is formed, the upper end face of the adhesive boss is 0.3 to 3.0 mm higher than the upper end face of the adhesive isolation ring. The ratio of the diameter of the adhesive boss to the diameter of the connecting part one or connecting part two is 0.30 to 0.90, and the width of the adhesive cavity of the ring is 0.5 to 3.0 mm.

7. The processing technology of the connecting buckle for preventing glue corrosion or wear on the substrate according to claim 6, characterized in that, The grooves in the airflow guiding and exhaust structure are radial grooves, annular grooves, or mesh-like grooves, with a groove width of 0.2–0.8 mm and a groove depth of 0.1–0.5 mm. The upper surface of the adhesive boss is an embossed surface, or the upper surface of the adhesive boss is provided with several protrusions.

8. The processing technology of the connecting buckle for preventing glue corrosion or wear on the substrate according to claim 7, characterized in that, In step S2, after the connecting buckle is formed, the lower end face of the connector 1 or connector 2 opposite to the end where the adhesive boss is located is a curved surface, and the opposite sides of connector 1 and connector 2 are parallel. The outer contour shape of connector 1 and connector 2 is a circle, an ellipse or a rounded polygon, and the outer contour shape of the adhesive boss is the same as the outer contour shape of connector 1 or connector 2.

9. The processing technology of the connecting buckle for preventing glue corrosion or wear on the substrate according to claim 8, characterized in that, The adhesive used in step S3 is one or more of the following: cyanoacrylate instant adhesive, acrylic structural adhesive, polyurethane adhesive, hot melt adhesive, or UV curable adhesive.

10. The processing technology of the connecting buckle for preventing glue corrosion or wear on the substrate according to claim 9, characterized in that, The adhesive treatment method for the adhesive boss is plasma activation, chemical roughening or sandblasting roughening, and the low surface energy coating applied to the surface of the annular adhesive cavity is a fluorine coating or a silicon coating.

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