Earphone dustproof net glue film rapid pasting device

Abstract

The utility model discloses a receiver dustproof net adhesive film quick laminator belongs to film laminating equipment technical field, including fixed platform, electric push rod and press down seat, and the bottom of press down seat is equipped with the center pressure head of first contact adhesive film center and the lateral pressure head of symmetrical distribution in the outside of center pressure head, and the fixed groove for accommodating bearing seat is seted up in fixed platform top, and the inboard edge of fixed groove is encircled and is seted up with the buffer groove, and the buffer pad is inlayed in buffer groove. The utility model discloses through the structural cooperation of center pressure head and lateral pressure head, realizes the sequential pressing from center to all around under the drive of electric push rod, and effectively discharges air, solves the bubble problem of laminating process, and simultaneously through the elastic deformation of buffer pad and absorbs impact and excessive pressure, avoids the damage to workpiece edge, has the advantages of high laminating quality, high product yield and high degree of automation.

Description

Technical Field

[0001] This utility model relates to the field of film bonding equipment technology, and in particular to a quick bonding device for earpiece dustproof mesh film. Background Technology

[0002] With the widespread use of consumer electronics products such as smartphones and tablets, the requirements for the manufacturing process and assembly precision of their internal components are becoming increasingly stringent. At the openings of the earpiece and speaker units, a layer of dustproof mesh film needs to be applied to effectively prevent external impurities such as dust and moisture from entering the device while ensuring normal sound transmission, thereby ensuring the long-term stable operation of the components and the overall reliability of the device.

[0003] In the early stages of production, the application of these dustproof mesh films relied heavily on manual operation. Workers would manually align and stick the film onto the earpiece. This method was not only inefficient and labor-intensive, but also made it difficult to guarantee the accuracy and consistency of the application. Problems such as positional misalignment, poor adhesion, and air bubbles under the film would occur, which could no longer meet the needs of modern, large-scale production.

[0004] To address this, the industry has developed automated bonding equipment to replace manual operation. Existing automated bonding equipment uses a flat pressure head, driven by cylinders and motors, to apply a single, overall pressure to the adhesive film placed on the workpiece to achieve bonding. Although this method improves efficiency, its structure and operation have inherent defects. When the flat pressure head presses down on the adhesive film at once, air in the area between the adhesive film and the workpiece surface is difficult to expel effectively. Under pressure, it is trapped inside the adhesive film, forming bubbles that affect the product's appearance and bonding strength. To try to solve the bubble problem and ensure a firm bond, the equipment needs to be set with a large downward pressure. However, earpieces are precision plastic and metal parts with relatively fragile edges. Excessive downward pressure can cause indentations, deformation, or even damage to the edges of the workpiece, thereby reducing the product yield.

[0005] Therefore, this utility model proposes a quick-applying device for earpiece dustproof mesh film to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems existing in the quick-applying device for earpiece dustproof mesh film, such as the simple pressure head structure, the tendency to form air bubbles between the film and the workpiece when pressing down once, the lack of a buffer protection mechanism for the workpiece, and the easy damage to the edge of the workpiece when the bonding pressure is too high, this utility model aims to provide a quick-applying device for earpiece dustproof mesh film with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a quick-applying device for earpiece dustproof mesh film, including: a fixed platform, a bracket, an electric push rod, a bearing seat, and a pressing seat.

[0008] The lower pressure seat has a central pressure head at its bottom for first contacting the center of the adhesive film, and side pressure heads symmetrically distributed outside the central pressure head. The bottom end face of the central pressure head is lower than the bottom end face of the side pressure heads in the vertical direction.

[0009] Furthermore, the top of the fixed platform is provided with a fixed groove for accommodating the support seat, and a buffer groove is provided around the inner edge of the fixed groove, and a buffer pad is installed in the buffer groove by embedding.

[0010] Preferably, the central pressure head is made of hard silicone material, and the side pressure heads are made of soft silicone material.

[0011] Preferably, the bracket has a mounting hole at the top, and the electric actuator is vertically mounted on the bracket through the mounting hole.

[0012] Preferably, it also includes reinforcing ribs, which are reinforced and connected between the lower pressure seat and the electric actuator by welding.

[0013] Preferably, the top of the support seat is flush with the top of the buffer pad.

[0014] Preferably, the inner side of the top of the fixing platform is also provided with a travel groove, and holes are formed between the travel grooves for the adhesive tape to pass through.

[0015] Preferably, the bracket is welded to both sides of the top of the fixed platform.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model solves the problem in the prior art that the air between the adhesive film and the workpiece cannot be effectively discharged and air bubbles are easily formed when the adhesive film is pressed down in one go during the bonding process, by setting a central pressure head that contacts the adhesive film first and a side pressure head that contacts it later at the bottom of the pressure seat. The central pressure head first positions the center and the side pressure head then gradually pushes the film outward from the center in a coordinated working manner.

[0018] 2. This utility model solves the problem that existing automated bonding equipment is prone to crush damage to the edges of precision and fragile parts such as earpieces when the pressure is not properly controlled or when there is an impact during the pressing process by opening a buffer groove around the support seat on the fixed platform and embedding a buffer pad. The elastic deformation of the buffer pad is utilized to solve the problem that existing automated bonding equipment is prone to crush damage to the edges of precision and fragile parts such as earpieces when the pressure is not properly controlled or when there is an impact. Attached Figure Description

[0019] Figure 1This is a perspective view of the earpiece dustproof mesh adhesive film quick-applying device proposed in this utility model;

[0020] Figure 2 This is a cross-sectional view of the fixing platform in the earpiece dustproof mesh adhesive film quick-applying device proposed in this utility model;

[0021] Figure 3 This is an exploded view of the lower pressure seat in the earpiece dustproof mesh adhesive film quick-applying device proposed in this utility model;

[0022] Figure 4 This is an exploded view of the electric push rod in the earpiece dustproof mesh quick-applying device proposed in this utility model.

[0023] Legend:

[0024] 1. Fixed platform; 2. Bracket; 3. Mounting hole; 4. Fixed groove; 5. Buffer groove; 6. Buffer pad; 7. Travel groove; 8. Bearing seat; 9. Electric actuator; 10. Lower pressure seat; 11. Center pressure head; 12. Side pressure head; 13. Reinforcing rib. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] Example:

[0027] Please refer to Figures 1 to 4 This utility model provides a quick-applying device for earpiece dustproof mesh film, which aims to solve the problems in the prior art where the pressure head structure of the applicator cannot effectively expel air bubbles and lacks a buffer protection structure for the workpiece.

[0028] like Figures 1 to 4As shown, the earpiece dustproof mesh quick-applying device includes a fixed platform 1 and a pressing assembly positioned above the fixed platform 1. The fixed platform 1 provides a stable mounting base for the entire device. The pressing assembly is used to perform the applicating action. Specifically, symmetrically arranged brackets 2 are firmly fixed to both sides of the top of the fixed platform 1 by welding. An electric actuator 9, with its axis perpendicular to the fixed platform 1, serves as the power actuator. The fixed end of the electric actuator 9 is vertically installed and fixed inside the mounting hole 3 opened at the top of the bracket 2. The pressing seat 10, as the end effector, is fixedly connected to the bottom telescopic end of the electric actuator 9. To ensure the rigidity of the connection, the pressing seat 10 and the electric actuator 9 are... The connection is reinforced by welding reinforcing ribs 13. A recessed fixing groove 4 is integrally formed in the center of the top of the fixing platform 1. The bearing seat 8 for accurately placing the earpiece workpiece is detachably set in the center of the inner side of the fixing groove 4. A ring-shaped buffer groove 5 is also opened around the inner edge of the fixing groove 4. The buffer pad 6 is tightly embedded in the inside of the buffer groove 5. The top of the bearing seat 8 is flush with the top of the buffer pad 6. The travel groove 7 for the insertion and guidance of the adhesive tape is reserved in the inner side of the top of the fixing platform 1. A central pressure head 11 is replaceably installed at the bottom center of the lower pressure seat 10. Multiple side pressure heads 12 are symmetrically distributed on the outer edge of the central pressure head 11.

[0029] Please refer to Figure 1 , Figure 3 and Figure 4 The bottom structure of the lower pressure seat 10 is the core of achieving sequential pressing. A central pressure head 11 is detachably installed at the center of the bottom. Multiple side pressure heads 12 are symmetrically fixedly connected to the outer edge of the central pressure head 11. To establish the pressing sequence, the bottom end face of the central pressure head 11 is lower than the bottom end face of the side pressure heads 12 in the vertical direction, thus ensuring that during the pressing process, the central pressure head 11 first contacts and presses the central area of ​​the adhesive film. To accommodate different pressing functions, the central pressure head 11 is made of hard silicone to apply sufficient initial adhesion force, while the side pressure heads 12 are made of soft silicone to gently push the edges of the adhesive film outward during subsequent pressing. Please refer to [reference needed]. Figure 1 and Figure 2 The pressing structure is complemented by a buffer and bearing structure set on the fixed platform 1. The fixed platform 1 has a fixed groove 4 for accommodating the bearing seat 8. A buffer groove 5 is formed around the fixed groove 4. The buffer pad 6 is tightly embedded in the buffer groove 5. When the electric push rod 9 drives the pressing seat 10 to apply pressure to the workpiece, the buffer pad 6 deforms due to its elasticity, absorbing the impact pressure and preventing the edge of the workpiece from being damaged due to excessive force. In a preferred embodiment, the top of the bearing seat 8 and the top of the buffer pad 6 are flush, forming a flat workpiece placement plane, ensuring the stability of workpiece placement and the reliability of the bonding process.

[0030] As a preferred embodiment, in order to ensure the overall rigidity of the pressing component and the vertical accuracy of its movement, two brackets 2 are symmetrically distributed and firmly fixed to the left and right sides of the top of the fixed platform 1 by welding. This wide-span symmetrical layout provides excellent stability for the upper motion mechanism. High-precision mounting holes 3 are machined on the top of each bracket 2. The fixed end of the electric push rod 9 is precisely and vertically installed through the mounting holes 3 and can be locked with fasteners. This structure not only ensures that the electric push rod 9 can drive the pressing seat 10 to move stably up and down in the vertical direction during operation, but also facilitates the installation, maintenance and replacement of the electric push rod 9.

[0031] As a further preferred embodiment, in order to enhance the bending and torsional resistance of the connection between the lower pressure seat 10 and the telescopic end of the electric actuator 9, and to prevent fatigue or deformation at the connection point during repeated application of large pressure, a plurality of reinforcing ribs 13 are uniformly welded circumferentially at the connection point between the top of the lower pressure seat 10 and the telescopic end of the electric actuator 9. The reinforcing ribs 13 are preferably triangular plate-shaped structures extending from the top surface of the lower pressure seat 10 to the side wall of the telescopic end of the electric actuator 9. This structure forms a stable triangular support, effectively dispersing the concentrated stress generated during pressing, thereby improving the long-term reliability and service life of the entire lower pressure actuator.

[0032] As another preferred embodiment, in order to achieve rapid and accurate feeding, positioning and guidance of the dustproof mesh tape, symmetrical travel grooves 7 with smooth bottom surfaces are opened on the inner side of the top of the fixed platform 1, specifically on both sides of the support seat 8. The depth and width of the travel grooves 7 are adapted to the size of the tape to provide lateral restraint. A hole and channel are formed between the two travel grooves 7 to allow the tape to pass through. The tape enters from the travel groove 7 at one end of the equipment, passes smoothly over the area directly above the support seat 8, and then exits from the travel groove 7 at the other end. Thus, before each bonding operation, the new tape can be conveniently and quickly aligned directly above the earpiece workpiece.

[0033] Working principle: First, place the earpiece to be bonded on the support seat 8 on top of the fixed platform 1, ensuring the workpiece is positioned correctly. Then, pass the adhesive tape with dustproof mesh film through the channel between the two travel grooves 7, aligning the adhesive backing side of the film downwards with the dustproof mesh installation area of ​​the earpiece. Once preparation is complete, activate the electric actuator 9. The telescopic end of the electric actuator 9 extends downwards, pushing the fixedly connected pressing seat 10 to smoothly approach the earpiece along the vertical direction. During the entire pressing process, the two brackets 2 welded to both sides of the fixed platform 1 provide stable vertical guidance for the electric actuator 9. This ensures that the lower pressure seat 10 will not deflect or wobble. Since the bottom end face of the central pressure head 11 is lower than the bottom end face of the side pressure heads 12 in the vertical direction, the central pressure head 11, made of hard silicone, will first contact the center area of ​​the adhesive film during the descent of the lower pressure seat 10. The central pressure head 11 applies initial positioning pressure to the adhesive film, making the center part of the adhesive film firmly adhere to the surface of the earpiece, forming a bubble-free central anchor point. As the electric actuator 9 continues to move downward, the stroke continues to increase, and the multiple side pressure heads 12, made of soft silicone, distributed outside the central pressure head 11, subsequently contact the film. Towards the edge of the adhesive film, the soft side pressure head 12, utilizing the flexibility of the material, gradually and evenly presses and flattens the adhesive film radially from the center outwards, using the central anchor point as a reference. This process, like a scraper, completely removes any residual air between the adhesive film and the earpiece, thus fundamentally preventing the formation of air bubbles and solving the problem of unstable bonding quality. When the electric push rod 9 pushes the pressure seat 10 to the preset final pressure point, the entire downward pressure will be fully applied to the earpiece. At this time, the buffer pad 6 surrounding the support seat 8 plays a crucial protective role. The buffer pad 6 is subjected to... After pressure is applied, elastic deformation occurs, effectively absorbing and buffering any excessive pressure or impact. This prevents pressure from being concentrated too much on the fragile edges of the earpiece, which could cause indentation, breakage, or damage. This significantly improves the yield rate. After the bonding action is completed, the electric push rod 9 is energized and reverses direction, driving the lower pressure seat 10, along with the center pressure head 11 and the side pressure head 12, to quickly return to their original position and detach from the bonded earpiece. The operator can then easily remove the finished product and place a new workpiece in preparation for the next bonding cycle. The entire process is highly automated, with fast bonding speed and good consistency.

Claims

1. A quick-applying device for earpiece dustproof mesh film, comprising a fixed platform (1), a bracket (2) installed on the fixed platform (1), an electric push rod (9) installed on the bracket (2), a bearing seat (8) set on the fixed platform (1), and a pressing seat (10) fixed to the telescopic end of the electric push rod (9); Its features are, The bottom of the lower pressure seat (10) is provided with a central pressure head (11) for first contacting the center of the adhesive film, and side pressure heads (12) symmetrically distributed outside the central pressure head (11). The bottom end face of the central pressure head (11) is lower than the bottom end face of the side pressure head (12) in the vertical direction, so as to realize sequential pressing from the center to the surrounding area. The top of the fixed platform (1) is provided with a fixed groove (4) for accommodating the support seat (8). The inner edge of the fixed groove (4) is surrounded by a buffer groove (5). A buffer pad (6) for buffering pressure is embedded in the buffer groove (5).

2. The earpiece dustproof mesh quick-applying device according to claim 1, characterized in that, The central pressure head (11) is made of hard silicone, and the side pressure head (12) is made of soft silicone.

3. The earpiece dustproof mesh quick-attachment device according to claim 1, characterized in that, The bracket (2) has a mounting hole (3) at the top, and the electric actuator (9) is vertically mounted on the bracket (2) through the mounting hole (3).

4. The earpiece dustproof mesh quick-attachment device according to claim 1, characterized in that, The lower pressure seat (10) and the electric push rod (9) are further reinforced by welding with reinforcing ribs (13).

5. The earpiece dustproof mesh quick-attachment device according to claim 1, characterized in that, The top of the support (8) is flush with the top of the buffer pad (6).

6. The earpiece dustproof mesh quick-attachment device according to claim 1, characterized in that, The fixed platform (1) also has a travel groove (7) reserved on the inner side of its top.

7. The earpiece dustproof mesh quick-attachment device according to claim 6, characterized in that, Holes are formed between the travel grooves (7) to allow the adhesive tape to pass through.

8. The earpiece dustproof mesh quick-attachment device according to claim 1, characterized in that, The bracket (2) is welded to both sides of the top of the fixed platform (1).

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