Mobile acf automatic attaching device

Abstract

The utility model relates to a mobile ACF automatic attaching device, which comprises a roll conveying assembly, a compression wheel assembly, a fuse device and an inspection device. The roll conveying assembly is used for effectively supplying and recycling the ACF tape and controlling the moving distance of the ACF tape, and comprises a gear transmission assembly, a guide wheel and at least one tension adjusting assembly. The compression wheel assembly is located on the transmission path of the ACF tape and is fixed to the lower end of the telescopic shaft of a lifting cylinder, which is used for pressing down the ACF tape to make it attached to the attaching component. The fuse device is fixed to the side of the lifting cylinder and is arranged adjacent to the compression wheel assembly, which is used for locally fusing the ACF when the compression wheel assembly is pressed down. The inspection device is used for inspecting the attachment quality of the previous section of ACF. The mobile ACF automatic attaching device has the advantages of simple structure, high integration and high work efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of automated production equipment, and in particular to a mobile ACF automatic bonding device. Background Technology

[0002] Anisotropic conductive film (ACF) is a key material used to connect LCD panels, touch screens, keyboards, chips, and other electronic components with conductive contacts. ACF tape typically includes an adhesive film and a cover tape. An ACF attacher is a device used to attach ACF to substrates such as liquid crystal displays (LCDs) and flexible printed circuit boards (FPCs). ACF attachers are characterized by automation and high efficiency, improving production efficiency and bonding quality. The main function of an ACF attacher is to automatically apply the ACF adhesive to the components to be connected and bond them together to another component, thereby achieving an electrical connection.

[0003] Existing ACF (Anti-Frost Compound) bonding machines typically include a feeding mechanism, an ACF cutting mechanism, an ACF removal mechanism, a blade pressing mechanism, a material separation mechanism, a clamping mechanism, and a release film recycling mechanism. The feeding mechanism feeds the ACF tape into the machine and positions it onto the component to be bonded. The blade pressing mechanism applies appropriate pressure to ensure adhesion between the ACF tape's adhesive film and the component. The recycling mechanism collects unused ACF cover tape to reduce material waste. Specifically, ACF adhesive is typically bonded to a release film and is generally packaged in rolls for storage and use in industrial applications. During use, the ACF is first drawn from the tray (feeding mechanism), then cut to the required length using a cutter, and excess adhesive is removed. Next, the tape is pressed down with a blade at appropriate temperature and pressure for a certain time to complete the bonding process. Then, the material separation mechanism separates the release film from the ACF adhesive, and the clamping mechanism pulls out the next section of the ACF tape to complete one bonding operation. Finally, the release film is recycled. In addition, the bonding quality needs to be checked after all bonding operations are completed. If a section is poorly bonded, the material is discarded, the next section is removed, and the process is repeated.

[0004] However, existing ACF attaching machines use a segmented, fixed-point attaching method, requiring multiple mechanisms to work together. This results in long attaching times, the need to replace the attaching blade for different attaching lengths, difficulty in mechanism calibration, high precision requirements for the cutting device, easy wear of the clamping mechanism, and the need for frequent, periodic calibration and replacement with significant manpower and resources. Furthermore, when multiple segments need attaching, timely inspection is not possible; even after attaching failures, the process continues until all segments are attached before inspection, leading to high time consumption and low efficiency. Therefore, there is a need to develop a highly integrated, high-efficiency mobile automatic ACF attaching device. Utility Model Content

[0005] The purpose of this invention is to provide a mobile ACF automatic bonding device that is simple in structure, highly integrated, and highly efficient.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A mobile automatic ACF (Anti-Chemical Fluoride) bonding device includes a roll conveying assembly, a pressure roller assembly, a welding device, and an inspection device. The roll conveying assembly is used to effectively supply and recycle ACF strip and control the moving distance of the ACF strip, and includes a gear transmission assembly, a guide wheel assembly and at least one tension adjustment assembly. The pressure roller assembly is located on the transmission path of the ACF strip and is fixed to the lower end of the telescopic shaft of a lifting cylinder. It is used to lower and press the ACF strip so that it is attached to the attachment. The fuse is fixed to the side of the lifting cylinder and is disposed adjacent to the pressure roller assembly, and is used to partially fuse the ACF when the pressure roller assembly descends and presses down. The inspection device is used to inspect the adhesion quality of the previous ACF segment.

[0007] Furthermore, the gear transmission assembly is mounted on one side surface of the fixed plate of the mobile ACF automatic bonding device, and includes a driving wheel and a driven wheel, wherein the driving wheel and the driven wheel mesh with each other and rotate in opposite directions. The guide wheel is located below the drive wheel and is used to position the ACF strip.

[0008] Furthermore, the roll conveying assembly further includes an encoder, and the gear transmission assembly, the guide wheel, the at least one tension adjustment assembly, and the encoder together constitute the transmission path of the ACF strip.

[0009] Furthermore, the tension adjustment assembly consists of a guide wheel rod and a spring, each having a fulcrum. The guide wheel rod stretches or contracts the spring while swinging relative to the fulcrum, thereby adjusting the tension of the ACF strip.

[0010] Furthermore, the pressure roller assembly has at least one lifting roller wrapped with cushioning material, a temperature control element, and a pressure control element, the lifting roller being used to press the ACF strip onto the surface of the attachment during descent.

[0011] Furthermore, the melting device has a temperature control element that descends when the lifting roller performs the bonding operation, and the melting device partially melts the ACF strip through the release film.

[0012] Furthermore, the inspection device and the ACF attachment area are located on the same plane, providing a position reference for the fusing device to precisely control the distance between the fusing point and the attachment position of the ACF strip.

[0013] Furthermore, the driving wheel drives the driven wheel to rotate, and the diameter of the driving wheel is at least twice that of the driven wheel.

[0014] Furthermore, the encoder, as the core sensor for achieving precision control, is linked with the tension adjustment component; when the encoder detects a sudden change in feeding resistance, the encoder triggers the dynamic adjustment of the spring to automatically correct the feeding amount.

[0015] Furthermore, at least two guide wheels are provided below the pressure roller assembly, and the guide wheels are used to position the ACF strip; The ACF strip is tensioned as it passes through the two guide rollers, thus presenting a straight state between the two guide rollers to facilitate pressing.

[0016] The mobile ACF automatic bonding device provided by this utility model simplifies the eight processes of existing ACF bonding devices—ACF extraction, ACF cutting, ACF removal, blade pressing, material separation, clamping and pulling, release film recycling, and inspection—into four processes: extraction (recycling), melting and separation, pressing and bonding, and inspection. This reduces the time required for coordinated operation of the mechanism and improves the production efficiency of the equipment. Furthermore, since the inspection device is located on the same plane as the ACF bonding area, the bonding quality of the previous section can be checked simultaneously with the bonding process. In other words, bonding and inspection are performed concurrently, significantly improving work efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the mobile ACF automatic bonding device involved in this utility model.

[0019] Figure 2 This is a schematic diagram of the movement path of the ACF conveyor belt.

[0020] Figure 3 yes Figure 1 A partially enlarged schematic diagram of part A of the mobile ACF automatic bonding device shown.

[0021] Figure 4 yes Figure 1 The diagram shows a side view of the mobile ACF automatic bonding device.

[0022] Figure 5 This is a schematic diagram before the application of the mobile ACF automatic application device of this utility model.

[0023] Figure 6 This is a schematic diagram of the ACF automatic bonding device of this utility model performing ACF bonding operations.

[0024] Explanation of main component symbols 100. Mobile ACF automatic bonding device; 101. Fixing plate; 11. Gear transmission assembly; 12. Guide wheel component; 1210. Fixed wheel; 13. Tension adjustment assembly; 14. Encoder; 15. Lifting cylinder; 20. Lifting roller; 111. Driving wheel; 112. Driven wheel; 131. Guide wheel rod; 132. Spring; 133. Fusor; 1310. Moving wheel; 2. Pressure roller assembly; 3. Fusible device; 4. Inspection device; 5. Guide wheel; 200. Movable device; W. Bonded attachment. Detailed Implementation

[0025] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0026] Please refer to Figure 1 , Figure 1 This is a front view of the mobile ACF automatic bonding device 100 involved in this utility model. The mobile ACF automatic bonding device 100 is mainly used for ACF bonding operations in the bonding process of liquid crystal modules and includes a roll conveying assembly. The mobile ACF automatic bonding device 100 is mounted on the upper surface of a movable device 200, so that it can move in a straight line under the drive of the movable device 200.

[0027] Please refer to the following: Figure 2 and Figure 3 The material roll conveying assembly includes a gear transmission assembly 11, a guide wheel assembly 12, and two tension adjustment assemblies 13 (see reference). Figure 3 The roll conveying assembly is used to effectively supply / recycle ACF rolls and control the travel distance of the strip. The gear transmission assembly 11 is mounted on one side surface of the fixed plate 101 of the mobile ACF automatic attaching device 100 and includes a larger driving wheel 111 and a smaller driven wheel 112. The driving wheel 111 and the driven wheel 112 mesh with each other and rotate in opposite directions. The guide wheel 12 is disposed below the driving wheel 111 and is used to position the ACF strip.

[0028] The tension adjustment assembly 13 consists of a guide wheel rod 131 and a spring 132, each having a fulcrum 133. One end of the spring 132 is fixed to the fulcrum 133, and the other end is connected to one side of the guide wheel rod 131. The guide wheel rod 131 stretches or contracts the spring 132 during its swing relative to the fulcrum 133, thereby adjusting the tension of the ACF strip. The guide wheel component 12 includes a fixed wheel 1210, and the tension adjustment assembly 13 is a movable component. When the strip tension changes, the guide wheel rod 131 swings and pulls the tension adjustment assembly 13 to extend or retract for adaptive adjustment, achieving tension balance during application. The tension adjustment assembly 13 is located in the transmission path of the ACF strip and maintains the strip tension during crimping, ensuring uniform and appropriate pressure to guarantee good contact between the strip and the component.

[0029] Preferably, the roll conveying assembly further includes an encoder 14. The encoder 14 is located approximately below the driven wheel 112 and serves as the core sensor for precise control. It is linked to the tension adjustment assembly 13. When the encoder detects a sudden change in feeding resistance (reflected as an abnormal pulse frequency), it triggers the dynamic adjustment of the spring 132. More specifically, the encoder 14 monitors the rotation angle of the drive wheel in real time (e.g., an OMRON E6B2-CWZ6C encoder outputs 2000 pulses per revolution), converts it into a strip displacement (accuracy up to 0.02 mm / pulse), and compares it with the feeding length set by the programmable logic controller (PLC) to form a closed-loop control. Furthermore, because the ACF strip has elastic deformation characteristics (stretch rate approximately 0.3-0.8%), the encoder 14 can automatically correct the feeding amount by detecting the actual displacement, avoiding uneven tension caused by traditional open-loop control (for example, the incidence of attached air bubbles may increase by 37% when the encoder is not used).

[0030] The mobile ACF automatic bonding device 100 further includes a pressure roller assembly 2, a fusing device 3, and an inspection device 4, all mounted on a fixed plate 101. The pressure roller assembly 2 has at least one lifting roller 20 wrapped with cushioning material and includes a temperature control element and a pressure control element (not shown) for pressing the ACF onto the bonding attachment W during descent, ensuring tight contact. The pressure of the pressure roller assembly 2 is controlled by a lifting cylinder 15 positioned between two tension adjustment components 13. The pressure roller assembly 2 moves in tandem with the ACF strip to achieve automatic mobile bonding. An encoder 14 dynamically adjusts the feeding speed during the downward pressing of the pressure roller assembly 2 to prevent the strip from being pulled. The fusing device 3 is fixed to the side of the lifting cylinder 15 and is located adjacent to the pressure roller assembly 2. The fusing device 3 has a temperature control element and descends during the bonding operation of the lifting roller 20, partially melting the ACF strip through the release film. The inspection device 4 is located on the same plane as the ACF bonding area and is movable. It moves during the bonding operation to inspect the bonding quality of the previous ACF section. When the inspection device 4 detects a defective bonding of the previous ACF section, it sends a signal to the programmable logic controller (PLC). The PLC then uses a clamping mechanism to remove the defective section and initiate a re-bonding process.

[0031] In addition, in this embodiment, the inspection device 4 provides a position reference for the fuse device 3, and precisely controls the distance between the ACF fuse point and the attachment position (within ±0.1mm) to avoid poor conductivity caused by fuse residue.

[0032] Furthermore, at least two guide wheels 5 are further provided below the pressure roller assembly 2. In this embodiment, there are two guide wheels 5, which are used to position the ACF strip.

[0033] Please refer to Figure 3 , Figure 3 The movement path of the ACF strip is shown. The ACF strip is wound around the drive wheel 111. As the drive wheel 111 rotates clockwise, the ACF strip moves downwards, then passes the fixed wheel 1210 of the guide wheel 12 and the moving wheel 1310 at the lower end of the guide wheel rod 131 on the left side of the lifting cylinder 15, then passes two guide wheels 5, then passes the moving wheel 1310 of the guide wheel rod 131 on the right side of the lifting cylinder 15, and then passes the encoder 14 before being wound around the driven wheel 112, thus realizing the recycling of the ACF release film. That is, the mobile ACF automatic attaching device 100 uses the principle of large / small gear transmission to realize the synchronization of the ACF strip lead-out and recycling action. While the ACF is being led out, the waste release film is recycled into the empty material tray.

[0034] The following is for reference Figure 4 , Figure 5 as well as Figure 6 The operating principle of the mobile ACF automatic bonding device 100 of this utility model will be explained. Specifically, during the bonding process, multiple parallel lifting rollers 20 of the pressure roller assembly 2 connected below the lifting cylinder 15 descend and press against the ACF and the attachment W to be bonded, ensuring close contact between the two. Furthermore, the multiple pressure roller assemblies 20 can roll in the conveying direction of the ACF strip, thereby achieving automatic moving bonding. Figure 5 As shown, the ACF strip is tensioned as it passes through the two guide rollers 5, thus maintaining a straight surface between them for easy pressing. Before the bonding operation, the cylinder shaft of the lifting cylinder 15 is in a retracted state, therefore the pressure roller assembly 2 connected to it is in an elevated state, with a certain distance between the pressure roller assembly 2 and the ACF strip. Figure 6 As shown, during the bonding operation, the cylinder shaft of the lifting cylinder 15 extends, thereby driving the pressure roller assembly 2 connected to it to descend, causing multiple lifting rollers 20 to press against the ACF strip, thus bonding the ACF strip to the attachment W. At the same time, the melting device 3 descends along with the lifting cylinder 15, partially melting the ACF through the release film.

[0035] After the attachment operation is completed, the programmable logic controller (PLC) controls the lifting cylinder 15 to rise, causing the lifting roller 20 to detach from the attachment W. Then, the attachment W is moved below the inspection device 4, where the attachment quality of the ACF is inspected.

[0036] As can be seen from the above description, the mobile ACF automatic bonding device 100 provided by this utility model has at least the following beneficial effects: First, the mobile ACF automatic attaching device 100 is connected to a drive wheel 111 via a motor, and a gear drive drives a driven wheel 112 to achieve the feeding and retrieval of the ACF strip. Second, the mobile ACF automatic attaching device 100 completes the attaching process by pressing the ACF strip with a lifting roller 20 at an appropriate temperature / pressure for a certain period of time. The entire device moves in tandem with the ACF strip, thus achieving automatic mobile attaching. When different lengths of ACF need to be attached, the ACF strip is moved the corresponding distance, avoiding the hassle of changing the attaching head and requiring calibration in existing technologies when different attaching lengths are required.

[0037] Secondly, the mobile ACF automatic bonding device 100 provided by this utility model simplifies the previous bonding process of ACF extraction, ACF cutting, ACF removal, blade pressing, material separation, clamping and pulling, release film recycling, and inspection into four processes: extraction (recycling), melting and separation, pressing and bonding, and inspection. This reduces the time of coordinated operation of the mechanism and improves the production efficiency of the equipment.

[0038] Again, such as Figure 3 As shown, since the inspection device 4 and the ACF attachment area are located on the same plane, the attachment quality of the previous section is checked while the attachment is being moved. That is, the attachment and inspection actions are performed simultaneously, significantly improving work efficiency.

[0039] Furthermore, since the tension adjustment component 13 is provided in the conveying path of the ACF material belt, the breakage of the material belt during gear transmission and bonding process can be effectively avoided.

[0040] Finally, this invention simplifies the two processes of cutting and adhering into one process. By utilizing the material properties of the large difference in melting points between the release film and ACF adhesive, the ACF is partially dissolved through the release film immediately after roller adhesion is completed. This allows different segments of ACF to be separated, achieving segmented adhesion.

[0041] Obviously, the embodiments described above are only some embodiments of this application, and not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0042] Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, whether directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A mobile ACF automatic attaching device, characterized by, Includes a coil conveying assembly, a pressure roller assembly, a welding device, and an inspection device. The roll conveying assembly is used to effectively supply and recycle ACF strip and control the moving distance of the ACF strip, and includes a gear transmission assembly, a guide wheel assembly and at least one tension adjustment assembly. The pressure roller assembly is located on the transmission path of the ACF strip and is fixed to the lower end of the telescopic shaft of a lifting cylinder. It is used to lower and press the ACF strip so that it is attached to the attachment. The fuse is fixed to the side of the lifting cylinder and is disposed adjacent to the pressure roller assembly, and is used to partially fuse the ACF when the pressure roller assembly descends and presses down. The inspection device is used to inspect the adhesion quality of the previous ACF segment.

2. The mobile ACF automatic bonding device according to claim 1, characterized in that, The gear transmission assembly is mounted on one side surface of the fixed plate of the mobile ACF automatic bonding device, and includes a driving wheel and a driven wheel; The driving wheel and the driven wheel mesh with each other and rotate in opposite directions; The guide wheel is located below the drive wheel and is used to position the ACF strip.

3. The mobile ACF automatic bonding device according to claim 1, characterized in that, The roll conveying assembly further includes an encoder. The gear transmission assembly, the guide wheel, the at least one tension adjustment assembly, and the encoder together constitute the conveying path of the ACF strip.

4. The mobile ACF automatic bonding device according to claim 3, characterized in that, The tension adjustment assembly consists of a guide wheel rod and a spring. Each of the guide wheel rod and the spring has a fulcrum. The guide wheel rod stretches or contracts the spring while swinging relative to the fulcrum, thereby adjusting the tension of the ACF strip.

5. The mobile ACF automatic bonding device according to claim 1, characterized in that, The pressure roller assembly has at least one lifting roller covered with cushioning material, a temperature control element, and a pressure control element. The lifting roller is used to press the ACF strip against the surface of the attachment during descent.

6. The mobile ACF automatic bonding device according to claim 5, characterized in that, The melting device has a temperature control element and descends when the lifting roller performs the bonding operation. The melting device partially melts the ACF strip through the release film.

7. The mobile ACF automatic bonding device according to claim 4, characterized in that, The inspection device and the ACF bonding area are located on the same plane, providing a position reference for the fusing device to precisely control the distance between the fusing point and the bonding position of the ACF strip.

8. The mobile ACF automatic attaching apparatus according to claim 2, wherein The driving wheel drives the driven wheel to rotate, and the diameter of the driving wheel is at least twice that of the driven wheel.

9. The mobile ACF automatic bonding device according to claim 4, characterized in that, The encoder, as the core sensor for achieving precision control, is linked with the tension adjustment component. When the encoder detects a sudden change in feeding resistance, the encoder triggers dynamic adjustment of the spring to automatically correct the feeding amount.

10. The mobile ACF automatic bonding device according to claim 1, characterized in that, At least two guide wheels are further provided below the pressure roller assembly, and the guide wheels are used to position the ACF strip; The ACF strip is tensioned as it passes through the two guide rollers, thus presenting a straight state between the two guide rollers to facilitate pressing.

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