Soldering tin welding device and soldering tin welding method for liquid crystal display screen and FPC for mobile phone
By designing an automated liquid crystal display screen and FPC welding device, high-precision welding is achieved using FPC prepression and local pressure mechanism, the problems of inconsistent manual welding accuracy and low efficiency in the prior art are solved, and efficient and stable large-scale production is achieved.
Patent Information
- Application Number
- CN202510036377.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2025-02-28
AI Technical Summary
In the prior art, the welding of FPC cables in the production process of smartphones mainly relies on manual labor, resulting in inconsistent welding accuracy and low efficiency, which cannot meet the needs of large-scale production.
An automated soldering device for the LCD screen and FPC is designed, including a machine, a conveying component, an LCD loading module, an FPC binding module and a feeding module. High-precision welding is achieved through FPC prepression and local pressure mechanism, and manual intervention is reduced.
It achieves high-precision welding and high production efficiency, ensures the stable welding quality between the LCD screen and the FPC, and is suitable for large-scale production.
Smart Images
Figure CN119525639A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of manufacturing equipment for liquid crystal modules, and in particular discloses a soldering device and a soldering method for a liquid crystal display screen for a mobile phone and an FPC. Background Art
[0002] In the production process of smartphones, the production and connection of FPC cables is an important link. FPC cables are used to connect the motherboard and various external components, such as display screens, camera modules, keypads, etc., to ensure the stable transmission of electrical signals. In the production of FPC cables, the FOG (FPC Overlay and Glue) process plays a vital role. The FOG process uses ACF film for lamination and electrically connects the FPC to components such as the motherboard and display screen through hot pressing. The characteristic of ACF film is that it has anisotropic conductive properties, that is, it conducts electricity only in a specific direction, thereby enabling precise electrical connection between the FPC and the contact point. This process can not only effectively avoid short circuit problems, but also ensure the stability of the connection.
[0003] In the prior art, the electrical welding between the two FPC boards of the glass module and the backlight module on the display module is mainly done by manual welding, or the product is manually positioned and fixed on a welding machine, and then the welding machine is controlled to perform welding operations. The accuracy of manual welding is highly dependent on the experience and skills of the operator, but due to the limitations of manual operation, it is difficult to maintain consistent welding accuracy. Manual welding can easily lead to problems such as poor connection, too large or too small solder joints, and welding position deviation, which affect the connection quality. At the same time, manual welding takes a long time, especially for large-scale production. The efficiency of manual operation is low and cannot meet the demand for high production speeds of modern electronic products. Summary of the invention
[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide a soldering device for liquid crystal display screens and FPCs for mobile phones with high welding precision, high production efficiency, and less manual intervention, which is suitable for large-scale production.
[0005] To achieve the above-mentioned purpose, a soldering device for a liquid crystal display screen and an FPC for a mobile phone of the present invention comprises a machine platform and a conveying component, an LCD loading module, an FPC binding module and a unloading module arranged on the machine platform, wherein the LCD loading module, the FPC binding module and the unloading module are arranged on the machine platform in sequence; the LCD loading module is used to transport an external liquid crystal screen to the conveying component, and the external liquid crystal screen is sequentially transferred to the FPC binding module and the unloading module via the conveying component; the FPC binding module comprises an FPC pre-pressing mechanism and an FPC main pressing mechanism which are sequentially arranged in cooperation with the conveying component, the FPC pre-pressing mechanism is used to attach the welded FPC to the liquid crystal screen and press it, and the FPC main pressing mechanism is used to perform hot pressing welding on the pressed FPC board; the unloading module comprises an unloading manipulator and an unloading platform, and the unloading mechanism is used to grab and transfer the liquid crystal screen welded with the FPC from the conveying component to the unloading platform. The device reduces manual intervention and improves production efficiency through automated LCD loading, FPC binding and unloading modules, and can achieve high-precision welding. Through FPC pre-pressing and the precise positioning and pressing of the FPC by the pressing mechanism, the welding accuracy is effectively improved, ensuring the stable welding quality between the LCD screen and the FPC.
[0006] Furthermore, the LCD loading module includes an LCD loading robot, which includes a cross slide installed on the machine platform, a lifting cylinder installed at the output end of the cross slide, and a material picking tray connected to the output shaft of the lifting cylinder; the lifting cylinder drives the material picking tray to approach the LCD screen, and the material picking tray picks up the LCD screen and places the LCD screen on the conveying component via the cross slide. Through the lifting cylinder and the cross slide of the LCD loading robot, the LCD screen can be efficiently and accurately transferred from the storage position to the conveying component, reducing manual handling, not only improving the level of automation, but also flexibly adapting to the handling and installation of LCD screens of different sizes and models.
[0007] Furthermore, the LCD loading module also includes a first visual component and an LCD calibration component. The LCD calibration component is located on the side of the conveying component close to the FPC binding module. The first visual component is located between the LCD calibration component and the FPC binding module. The first visual component is used to detect the position of the LCD screen, and the LCD calibration component is used to perform position correction on the LCD screen on the conveying component. Through the visual component and the calibration component, the LCD screen can be positioned and calibrated with high precision to ensure that the LCD screen is accurately placed in the welding position, effectively reduce the welding deviation caused by positioning error, and improve the welding quality; the LCD calibration component is located on the side of the conveying component close to the FPC binding module, which solves the problem of positional displacement of the LCD screen after the calibration position due to the movement of the conveying component.
[0008] Furthermore, the soldering device for the LCD screen and the FPC also includes a cleaning mechanism arranged on the machine platform, the cleaning mechanism is located between the LCD calibration component and the FPC binding module, the cleaning mechanism includes a cleaning platform movably arranged on the machine platform, a cleaning chuck and a cleaning pump for pumping cleaning agent to the cleaning chuck, a dust-free cloth is arranged on the cleaning chuck, the external LCD screen is transported to the cleaning platform, the cleaning platform transports the LCD screen through the cleaning chuck, and the cleaning chuck contacts and wipes the LCD screen. The cleaning mechanism can remove stains, grease and other impurities on the surface of the LCD screen, ensure the welding surface is clean, improve the welding quality, and a clean LCD screen surface helps to make the contact more firm during welding, reducing welding defects caused by pollution, such as cold solder joints and short circuits.
[0009] Furthermore, the soldering device for the LCD screen and the FPC also includes an IC binding module arranged on the machine platform, the IC binding module is located between the FPC binding module and the cleaning mechanism, and the IC binding module includes an attachment platform, a detection mechanism arranged on the attachment platform, a hot pressing mechanism arranged below the detection mechanism, and an ACF feeding mechanism arranged on the hot pressing mechanism, and the detection mechanism is arranged directly above the ACF feeding mechanism. The detection mechanism corresponds to the ACF feeding position, performs accurate identification, and ensures the ACF attachment accuracy. The automated ACF feeding and hot pressing mechanism make the IC binding process more efficient, reduce manual operations, and improve binding accuracy and production efficiency.
[0010] Furthermore, the FPC pre-pressing mechanism includes a pre-pressing platform and a pre-pressing component arranged on the pre-pressing platform, the pre-pressing component includes an FPC feeding manipulator and a pre-pressing head, the pre-pressing platform is used to carry an external LCD screen, the FPC feeding manipulator places the external FPC on the LCD screen, and the pre-pressing head pre-presses the FPC onto the LCD screen. The pre-pressing mechanism can accurately align the FPC board with the LCD screen and pre-press it, avoiding the FPC board from being offset or inaccurately positioned, and by pre-pressing the FPC, ensuring close contact between the FPC board and the LCD screen during welding, which helps to improve welding quality.
[0011] Furthermore, the FPC pressing mechanism includes a pressing platform, a pressing head arranged on the pressing platform, and a heater arranged on the pressing head; the LCD screen pre-pressed by the FPC pre-pressing mechanism is transferred to the pressing platform, and the heater is used to heat the pressing head. The heated pressing head contacts the FPC and welds the FPC to the LCD screen. The heated pressing head can press the FPC board at an appropriate temperature, improve the welding effect, and reduce welding problems caused by uneven temperature. The heater ensures the consistency of temperature during the welding process, which helps to improve the stability and reliability of welding.
[0012] Furthermore, the heater is provided with an opening for increasing the contact area between the pressure head and the heater, and the pressure head is placed in the opening. The opening design can increase the contact area between the heater and the pressure head, improve the heat conduction efficiency, ensure the uniform distribution of temperature during the welding process, optimize the heat conduction, so that the pressure head can be evenly heated, thereby improving the welding effect and avoiding welding defects caused by local temperature differences.
[0013] Furthermore, the FPC pressing mechanism is provided with multiple groups, so that multiple FPC boards can be heated and pressed at the same time, reducing the production cycle and improving production efficiency, while ensuring the quality and consistency of welding, improving production efficiency, and meeting the needs of large-scale production.
[0014] A method for soldering a liquid crystal display screen and an FPC for a mobile phone comprises the following steps: S1, LCD feeding, an external liquid crystal screen is transported to a conveying component via an LCD feeding module, a material picking tray of the LCD feeding module picks up the liquid crystal screen and places the liquid crystal screen on the conveying component via a cross slide, a first visual component detects the position of the liquid crystal screen, and an LCD calibration component calibrates the position of the liquid crystal screen on a side close to an FPC binding module; S2, LCD cleaning, the conveying component conveys the liquid crystal screen to a cleaning platform, the cleaning platform conveys the liquid crystal screen through a cleaning chuck, and the cleaning chuck contacts and wipes the liquid crystal screen; S3, IC binding, the conveying component conveys the liquid crystal screen to an attachment platform, and an ACF is hot-pressed onto the liquid crystal screen via the IC binding module; S4, FPC feeding, the conveying component conveys the liquid crystal screen to a pre-pressing platform, an external FPC is transported to an FPC feeding robot material box via an FPC feeding robot, and a pre-pressing head pre-presses the FPC onto the liquid crystal screen; S5, FPC binding, the conveying component conveys the liquid crystal screen to a local pressing platform, and the FPC is soldered to the liquid crystal screen via an FPC local pressing mechanism.
[0015] Beneficial effects of the present invention: The present invention reduces manual intervention and improves production efficiency through automated LCD loading, FPC binding and unloading modules, and can achieve high-precision welding. Through FPC pre-pressing and the precise positioning and pressing of the FPC by the pressing mechanism, the welding accuracy is effectively improved, ensuring the stable welding quality between the LCD screen and the FPC. The lifting cylinder and cross slide of the LCD feeding robot can efficiently and accurately transfer the LCD screen from the storage position to the transmission component, reducing manual handling, which not only improves the level of automation, but also can flexibly adapt to the handling and installation of LCD screens of different sizes and models; Through the visual components and calibration components, the LCD screen can be positioned and calibrated with high precision to ensure that the LCD screen is accurately placed at the welding position, effectively reduce the welding deviation caused by positioning errors, and improve the welding quality; the LCD calibration component is located on the side of the conveyor component close to the FPC binding module, which solves the problem of positional displacement caused by the LCD screen moving with the conveyor component after the calibration position. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of a soldering device for a mobile phone liquid crystal display screen and an FPC according to the present invention; Figure 2 It is a structural schematic diagram of the LCD feeding module of the present invention; Figure 3 It is a structural schematic diagram of the material taking tray of the present invention; Figure 4 It is a structural schematic diagram of the FPC pre-pressing mechanism of the present invention; Figure 5 for Figure 4 A partial schematic diagram of the middle part; Figure 6 It is a structural schematic diagram of the LCD calibration component of the present invention; Figure 7 It is a structural schematic diagram of the cleaning mechanism of the present invention; Figure 8 It is a structural schematic diagram of the IC binding module of the present invention; Fig. 9 It is a structural schematic diagram of the FPC main pressing mechanism of the present invention; Fig.10 for Fig. 9 A partial schematic diagram of B in the middle; Fig.11 It is a structural schematic diagram of the cover plate laminating machine of the present invention.
[0017] Reference numerals include: 1. Machine; 2. Conveying components; 3. LCD feeding module; 4. FPC binding module; 5. Unloading module; 6. FPC pre-pressing mechanism; 7. FPC pressing mechanism; 8. Backlight assembly module; 9. Cover assembly module; 10. LCD feeding manipulator; 11. Cross slide; 12. Lifting cylinder; 13. Pick-up tray; 14. First vision component; 15. LCD calibration component; 16. Cleaning mechanism; 17. Cleaning platform; 18. Cleaning chuck; 19. Cleaning pump; 20. IC binding module; 21. Attachment platform; 22. Detection mechanism; 23. Hot pressing mechanism; 24. A CF feeding mechanism; 25. Pre-pressing platform; 26. Pre-pressing assembly; 27. FPC feeding robot; 28. Pre-pressing head; 29. Main pressing platform; 30. Main pressing head; 31. Heater; 32. Baffle; 33. Pushing motor; 34. Pushing block; 35. Main pressing motor; 36. Radiator; 37. Glue dispensing module; 38. Stacking loader; 39. Backlight assembly machine; 40. Cover laminating machine; 41. Cover bonding machine; 42. Vacuum degassing machine; 43. Support frame; 44. Feeding mechanism; 45. Laminating mechanism; 46. Flipping mechanism; 47. Flipping motor; 48. Vacuum adsorption plate. DETAILED DESCRIPTION
[0018] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.
[0019] See also Figures 1 to 11 As shown, a soldering device for a liquid crystal display screen and an FPC for a mobile phone of the present invention comprises a machine 1 and a conveying component 2, an LCD loading module 3, an FPC binding module 4 and a blanking module 5 arranged on the machine 1, wherein the LCD loading module 3, the FPC binding module 4 and the blanking module 5 are arranged on the machine 1 in sequence; the LCD loading module 3 is used to transport an external liquid crystal screen to the conveying component 2, and the external liquid crystal screen is sequentially transferred to the FPC binding module 4 and the blanking module 5 via the conveying component 2; the FPC binding module 4 comprises an FPC pre-pressing mechanism 6 and an FPC main pressing mechanism 7 which are sequentially arranged in cooperation with the conveying component 2, the FPC pre-pressing mechanism 6 is used to attach the welded FPC to the liquid crystal screen and press it, and the FPC main pressing mechanism 7 is used to perform hot pressing welding on the pressed FPC board; the blanking module 5 comprises a blanking manipulator and a blanking platform, and the blanking mechanism is used to grab and transfer the liquid crystal screen welded with the FPC from the conveying component 2 to the blanking platform. The device reduces manual intervention and improves production efficiency through automated LCD loading, FPC binding and unloading modules 5, and can achieve high-precision welding. Through the FPC pre-pressing and the precise positioning and pressing of the FPC by the pressing mechanism, the welding accuracy is effectively improved, ensuring the stable welding quality between the LCD screen and the FPC.
[0020] The LCD loading module 3 includes an LCD loading robot 10, which includes a cross slide 11 installed on the machine 1, a lifting cylinder 12 installed at the output end of the cross slide 11, and a material picking tray 13 connected to the output shaft of the lifting cylinder 12; the lifting cylinder 12 drives the material picking tray 13 to approach the LCD screen, and the material picking tray 13 picks up the LCD screen and places the LCD screen on the conveying component 2 via the cross slide 11. Through the lifting cylinder 12 and the cross slide 11 of the LCD loading robot 10, the LCD screen can be efficiently and accurately transferred from the storage position to the conveying component 2, reducing manual handling, not only improving the level of automation, but also flexibly adapting to the handling and installation of LCD screens of different sizes and models.
[0021] The LCD loading module 3 also includes a first visual component 14 and an LCD calibration component 15. The LCD calibration component 15 is located on the side of the conveying component 2 close to the FPC binding module 4. The first visual component 14 is located between the LCD calibration component 15 and the FPC binding module 4. The first visual component 14 is used to detect the position of the LCD screen, and the LCD calibration component 15 is used to correct the position of the LCD screen on the conveying component 2. Through the visual component and the calibration component, the LCD screen can be positioned and calibrated with high precision to ensure that the LCD screen is accurately placed in the welding position, effectively reduce the welding deviation caused by positioning error, and improve the welding quality; the LCD calibration component 15 is located on the side of the conveying component 2 close to the FPC binding module 4, which solves the problem of positional displacement of the LCD screen caused by the movement of the conveying component 2 after the calibration position.
[0022] Specifically, the calibration component includes a baffle 32, a pushing motor 33 installed on the conveying component 2, and a pushing block 34 connected to the output shaft of the pushing motor 33. The baffle 32 is installed on the side of the conveying component 2 close to the FPC binding module 4. The external LCD screen is transported to the block via the conveying component 2. The block stops and contacts the LCD screen. The conveying component 2 cooperates with the block to calibrate the LCD screen in the first direction. The pushing motor 33 drives the pushing block 34 to push the LCD screen to calibrate in the second direction.
[0023] The soldering device for the LCD screen and the FPC also includes a cleaning mechanism 16 disposed on the machine 1. The cleaning mechanism 16 is located between the LCD calibration component 15 and the FPC binding module 4. The cleaning mechanism 16 includes a cleaning platform 17 movably disposed on the machine 1, a cleaning chuck 18, and a cleaning pump 19 for pumping cleaning agent to the cleaning chuck 18. The cleaning chuck 18 is provided with a dust-free cloth. The external LCD screen is transported to the cleaning platform 17. The cleaning platform 17 transports the LCD screen through the cleaning chuck 18. The cleaning chuck 18 contacts and wipes the LCD screen. The cleaning mechanism 16 can remove impurities such as stains and grease on the surface of the LCD screen, ensure a clean welding surface, and improve welding quality. A clean LCD screen surface helps to make the contact more firm during welding and reduce welding defects caused by pollution, such as cold solder joints and short circuits.
[0024] Specifically, the cleaning platform 17 is a vacuum adsorption platform, and the LCD screen is adsorbed on the cleaning platform 17 to prevent the LCD screen from being displaced when the cleaning chuck 18 contacts and wipes the LCD screen, thereby enhancing stability.
[0025] Specifically, the conveying component 2 includes a loading line and a first transfer robot. The loading line is used to carry the LCD screen picked up by the LCD loading module 3. The first visual component 14 and the LCD calibration component 15 are arranged in conjunction with the loading line to position and calibrate the LCD screen. The first transfer robot is used to transfer the LCD screen from the loading line to the cleaning platform 17.
[0026] The soldering device for the LCD screen and the FPC also includes an IC binding module 20 arranged on the machine 1, and the IC binding module 20 is located between the FPC binding module 4 and the cleaning mechanism 16. The IC binding module 20 includes an attachment platform 21, a detection mechanism 22 arranged on the attachment platform 21, a hot pressing mechanism 23 arranged below the detection mechanism 22, and an ACF feeding mechanism 24 arranged on the hot pressing mechanism 23, and the detection mechanism 22 is arranged directly above the ACF feeding mechanism 24. The detection mechanism 22 corresponds to the ACF feeding position, and performs accurate identification to ensure the ACF attachment accuracy. The automated ACF feeding and hot pressing mechanism 23 make the IC binding process more efficient, reduce manual operations, and improve binding accuracy and production efficiency.
[0027] Specifically, the conveying component 2 further includes a second transfer robot, which is used to transfer the LCD screen from the cleaning platform 17 to the attaching platform 21 .
[0028] Specifically, the attaching platform 21 is a vacuum adsorption platform, and the LCD screen is adsorbed on the attaching platform 21 to avoid displacement of the LCD screen when the heat pressing mechanism 23 heat presses the ACF onto the LCD screen, thereby enhancing stability and improving binding accuracy.
[0029] Specifically, the detection mechanism 22 is a CCD alignment imaging system, which takes pictures of the LCD screen to compare points, making the IC binding process more efficient, reducing manual operations, and improving binding accuracy and production efficiency.
[0030] The FPC pre-pressing mechanism 6 includes a pre-pressing platform 25 and a pre-pressing component arranged on the pre-pressing platform 25. The pre-pressing component includes an FPC feeding manipulator 27 and a pre-pressing head 28. The pre-pressing platform 25 is used to carry an external LCD screen. The FPC feeding manipulator 27 places the external FPC on the LCD screen, and the pre-pressing head 28 pre-presses the FPC onto the LCD screen. The pre-pressing mechanism can accurately align the FPC board with the LCD screen and pre-press it to avoid the FPC board from being offset or inaccurately positioned. By pre-pressing the FPC, it is ensured that the FPC board and the LCD screen are in close contact during the welding process, which helps to improve the welding quality.
[0031] Specifically, the conveying component 2 further includes a third transfer robot, which is used to transfer the LCD screen from the attaching platform 21 to the pre-pressing platform 25 .
[0032] Specifically, the pre-pressing platform 25 is a vacuum adsorption platform, and the LCD screen is adsorbed on the pre-pressing platform 25 to avoid displacement of the LCD screen when the pre-pressing head 28 pre-presses the FPC onto the LCD screen, thereby enhancing stability and improving binding accuracy.
[0033] Specifically, the FPC pre-pressing mechanism 6 is the same as the IC binding module 20 .
[0034] The FPC pressing mechanism 7 includes a pressing platform 29, a pressing head 30 disposed on the pressing platform 29, and a heater 31 disposed on the pressing head 30; the LCD screen pre-pressed by the FPC pre-pressing mechanism 6 is transferred to the pressing platform 29, and the heater 31 is used to heat the pressing head 30. The heated pressing head 30 contacts the FPC and welds the FPC to the LCD screen. The heated pressing head 30 can press the FPC board at an appropriate temperature, improve the welding effect, and reduce welding problems caused by uneven temperature. The heater 31 ensures the consistency of temperature during the welding process, which helps to improve the stability and reliability of welding.
[0035] The heater 31 is provided with an opening for increasing the contact area between the pressing head 30 and the heater 31, and the pressing head 30 is placed in the opening. The opening design can increase the contact area between the heater 31 and the pressing head 30, improve the heat conduction efficiency, ensure the uniform distribution of temperature during the welding process, optimize the heat conduction, and enable the pressing head 30 to be evenly heated, thereby improving the welding effect and avoiding welding defects caused by local temperature differences.
[0036] Specifically, the conveying component 2 further includes a fourth transfer robot, which is used to transfer the LCD screen from the pre-pressing platform 25 to the main pressing platform 29.
[0037] Specifically, the pressing platform 29 is a vacuum adsorption platform, and the LCD screen is adsorbed on the pressing platform 29 to avoid displacement of the LCD screen when the pressing head 30 welds the FPC to the LCD screen, thereby enhancing stability and improving binding accuracy.
[0038] Specifically, the pressing head 30 is connected to the pressing platform 29 via the pressing motor 35 , and a heat sink 36 is provided between the pressing head 30 and the output shaft of the pressing motor 35 , and the heat sink 36 is used to prevent the heat of the pressing head 30 from being transferred to the pressing motor 35 .
[0039] Specifically, the opening is in an inverted "L" shape, and the pressing head 30 is embedded in the opening, which increases the contact area between the pressing head 30 and the heater 31, shortens the time required for the heater 31 to heat the pressing head 30, and improves production efficiency.
[0040] The FPC pressing mechanism 7 is provided with multiple groups. Multiple FPC boards can be heated and pressed at the same time, reducing the production cycle and improving production efficiency, while ensuring the quality and consistency of welding, improving production efficiency, and adapting to large-scale production needs.
[0041] Specifically, the soldering device for the LCD screen and the FPC also includes a glue dispensing module 37, which is a fully automatic two-in-one glue dispensing machine. The glue dispensing mechanism is used to drip fixing glue and conductive glue on the connection between the FPC and the LCD screen. The fixing glue prevents the FPC from being exposed, protects the FPC, prevents the FPC from breaking, and enhances the reliability of the connection between the FPC and the LCD screen; the main function of the conductive glue is to provide electrical conduction to ensure the electrical connection between the FPC and the LCD screen. The LCD screen and the FPC need to conduct electrical signals through the conductive glue. The conductive glue can form a stable conduction path to ensure smooth signal transmission. At the same time, the conductive glue can fill the tiny gap at the connection between the FPC and the LCD screen, enhance the conductive performance of the contact, thereby reducing the contact resistance and ensuring good current conduction.
[0042] Specifically, the soldering device for the liquid crystal display screen and the FPC also includes a backlight assembly module 8, which includes a stacking feeder 38 and a backlight assembly machine 39. The backlight module is a key component of the liquid crystal display screen and is responsible for providing the light source required for the display screen. The stacking feeder 38 is responsible for accurately conveying and stacking the various components of the backlight module (such as light source, light guide plate, reflective plate, diffuser, etc.) together in a predetermined order. It can automatically stack these materials one by one in layers to avoid errors and instability in manual operation. The backlight assembly machine 39 can achieve high-precision assembly work, ensure that the backlight module and the liquid crystal screen are firmly connected, and avoid uneven backlight, poor display effect or subsequent failures caused by improper assembly. Through automation, the assembly efficiency and accuracy can be greatly improved.
[0043] Specifically, the soldering device for the LCD screen and the FPC also includes a cover assembly module 9, which includes a cover laminating machine 40, a cover bonding machine 41 and a vacuum degassing machine 42. The cover laminating machine 40 is used to respectively attach AB glue and a protective film on both sides of the cover, the cover bonding machine 41 is used to attach the cover to the LCD screen via AB glue, and the vacuum degassing machine 42 is used to vacuum out bubbles between the cover and the LCD screen.
[0044] Specifically, the cover plate laminating machine 40 includes a support frame 43 and two groups of feeding mechanisms 44 arranged on the support frame 43, and the two groups of feeding mechanisms 44 are each provided with a film sticking mechanism 45. A flipping mechanism 46 is provided between the two groups of feeding mechanisms 44, and the flipping mechanism 46 includes a flipping motor 47 and a vacuum adsorption plate 48 connected to the output shaft of the flipping motor 47. After the first film sticking mechanism 45 attaches the protective film to the LCD screen, the vacuum adsorption plate 48 adsorbs the LCD screen, and the flipping motor 47 drives the vacuum adsorption plate 48 to rotate to drive the LCD screen to flip, and the second film sticking mechanism 45 attaches AB glue to the other side of the flipped LCD screen.
[0045] A method for soldering a liquid crystal display screen and an FPC for a mobile phone, comprising the following steps: S1, LCD loading, an external liquid crystal screen is transported to a conveying component 2 via an LCD loading module 3, a material picking tray 13 of the LCD loading module 3 picks up the liquid crystal screen and places the liquid crystal screen on the conveying component 2 via a cross slide 11, a first visual component 14 detects the position of the liquid crystal screen, and an LCD calibration component 15 calibrates the position of the liquid crystal screen on a side close to an FPC binding module 4; S2, LCD cleaning, the conveying component 2 conveys the liquid crystal screen to a cleaning platform 17, and the cleaning platform 17 transports the liquid crystal screen through a cleaning clamp Head 18, the cleaning chuck 18 contacts and wipes the LCD screen; S3, IC binding, the conveying component 2 transports the LCD screen to the attachment platform 21, and the ACF is hot-pressed onto the LCD screen via the IC binding module 20; S4, FPC loading, the conveying component 2 transports the LCD screen to the pre-pressing platform 25, and the external FPC is transported to the FPC loading robot 27 box via the FPC loading robot 27, and the pre-pressing head 28 pre-presses the FPC onto the LCD screen; S5, FPC binding, the conveying component 2 transports the LCD screen to the main pressing platform 29, and the FPC is welded to the LCD screen via the FPC main pressing mechanism 7.
[0046] Specifically, the soldering method for the mobile phone LCD screen and FPC also includes the following steps: S6, glue dispensing, the glue dispensing mechanism drips fixing glue and conductive glue at the connection between the FPC and the LCD screen; S7, backlight loading, the stacking loading machine 38 is responsible for accurately conveying and stacking the various components of the backlight module (such as light source, light guide plate, reflective plate, diffuser, etc.) in a predetermined order; S8, backlight assembly, the backlight assembly machine 39 performs assembly work to install the backlight module on the LCD screen; S9, testing, The LCD screen with the backlight module installed is tested to remove unqualified LCD screens; S10, film pasting, after the first film pasting mechanism 45 attaches the protective film to the LCD screen, the vacuum adsorption plate 48 adsorbs the LCD screen, the flip motor 47 drives the vacuum adsorption plate 48 to rotate to drive the LCD screen to flip, and the second film pasting mechanism 45 adheres AB glue to the other side of the flipped LCD screen; S11, bonding, the cover plate bonding machine 41 attaches the cover plate to the LCD screen via AB glue, and the vacuum degassing machine 42 draws out vacuum to remove the bubbles between the cover plate and the LCD screen.
[0047] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. A soldering device for a mobile phone liquid crystal display screen and an FPC, characterized in that: The invention comprises a machine (1) and a conveying component (2), an LCD loading module (3), an FPC binding module (4) and a blanking module (5) arranged on the machine (1); the LCD loading module (3), the FPC binding module (4) and the blanking module (5) are arranged on the machine (1) in sequence; the LCD loading module (3) is used to transport an external liquid crystal screen to the conveying component (2); the external liquid crystal screen is sequentially transferred and transported to the FPC binding module (4) and the blanking module (5) via the conveying component (2); the FPC binding module (4) comprises an FPC pre-pressing mechanism (6) and an FPC pressing mechanism (7) which are sequentially arranged in cooperation with the conveying component (2); the FPC pre-pressing mechanism (6) is used to attach a welded FPC to the liquid crystal screen and press it; the FPC pressing mechanism (7) is used to perform hot pressing welding on the pressed FPC board; the blanking module (5) comprises a blanking manipulator and a blanking platform; the blanking mechanism is used to grab and transfer the liquid crystal screen welded with the FPC from the conveying component (2) to the blanking platform.
2. The soldering device for a mobile phone liquid crystal display screen and an FPC according to claim 1, characterized in that: The LCD loading module (3) comprises an LCD loading robot (10), and the LCD loading robot (10) comprises a cross slide (11) mounted on the machine platform (1), a lifting cylinder (12) mounted on the output end of the cross slide (11), and a material picking tray (13) connected to the output shaft of the lifting cylinder (12); the lifting cylinder (12) drives the material picking tray (13) to approach the LCD screen, and the material picking tray (13) picks up the LCD screen and places the LCD screen on the conveying component (2) via the cross slide (11).
3. The soldering device for a mobile phone liquid crystal display screen and an FPC according to claim 1, characterized in that: The LCD loading module (3) further comprises a first visual component (14) and an LCD calibration component (15); the LCD calibration component (15) is located on a side of the conveying component (2) close to the FPC binding module (4); the first visual component (14) is located between the LCD calibration component (15) and the FPC binding module (4); the first visual component (14) is used to detect the position of the liquid crystal screen; and the LCD calibration component (15) is used to perform position correction on the liquid crystal screen on the conveying component (2).
4. The soldering device for a mobile phone liquid crystal display screen and an FPC according to claim 3, characterized in that: The soldering device for the liquid crystal display screen and the FPC further comprises a cleaning mechanism (16) arranged on the machine platform (1), the cleaning mechanism (16) being located between the LCD calibration component (15) and the FPC binding module (4), the cleaning mechanism (16) comprising a cleaning platform (17) movably arranged on the machine platform (1), a cleaning chuck (18) and a cleaning pump (19) for pumping a cleaning agent to the cleaning chuck (18), a dust-free cloth being arranged on the cleaning chuck (18), an external liquid crystal screen being transported to the cleaning platform (17), the cleaning platform (17) transporting the liquid crystal screen through the cleaning chuck (18), and the cleaning chuck (18) contacting and wiping the liquid crystal screen.
5. The soldering device for a mobile phone liquid crystal display screen and an FPC according to claim 4, characterized in that: The soldering device for a liquid crystal display screen and an FPC further comprises an IC binding module (20) arranged on the machine platform (1); the IC binding module (20) is located between the FPC binding module (4) and the cleaning mechanism (16); the IC binding module (20) comprises an attachment platform (21), a detection mechanism (22) arranged on the attachment platform (21), a heat pressing mechanism (23) arranged below the detection mechanism (22), and an ACF feeding mechanism (24) arranged on the heat pressing mechanism (23); the detection mechanism (22) is arranged directly above the ACF feeding mechanism (24).
6. The soldering device for a mobile phone liquid crystal display screen and an FPC according to claim 1, characterized in that: The FPC pre-pressing mechanism (6) comprises a pre-pressing platform (25) and a pre-pressing component arranged on the pre-pressing platform (25); the pre-pressing component comprises an FPC feeding robot (27) and a pre-pressing head (28); the pre-pressing platform (25) is used to carry an external liquid crystal screen; the FPC feeding robot (27) places the external FPC on the liquid crystal screen; and the pre-pressing head (28) pre-presses the FPC onto the liquid crystal screen.
7. The soldering device for a mobile phone liquid crystal display screen and an FPC according to claim 1, characterized in that: The FPC pre-pressing mechanism (7) comprises a pre-pressing platform (29), a pre-pressing head (30) arranged on the pre-pressing platform (29), and a heater (31) arranged on the pre-pressing head (30); the liquid crystal screen pre-pressed by the FPC pre-pressing mechanism (6) is transferred to the pre-pressing platform (29), the heater (31) is used to heat the pre-pressing head (30), and the heated pre-pressing head (30) contacts the FPC and welds the FPC to the liquid crystal screen.
8. The soldering device for a mobile phone liquid crystal display screen and an FPC according to claim 7, characterized in that: The heater (31) is provided with an opening for increasing the contact area between the pressing head (30) and the heater (31), and the pressing head (30) is placed in the opening.
9. The soldering device for a mobile phone liquid crystal display screen and an FPC according to claim 1, characterized in that: The FPC main pressure mechanism (7) is provided with a plurality of groups.
10. A method for soldering a liquid crystal display screen and an FPC for a mobile phone, characterized in that: The steps include: S1, LCD loading, the external LCD screen is transported to the conveying component (2) via the LCD loading module (3), the material picking tray (13) of the LCD loading module (3) picks up the LCD screen and places the LCD screen on the conveying component (2) via the cross slide (11), the first vision component (14) detects the position of the LCD screen, and the LCD calibration component (15) calibrates the position of the LCD screen on the side close to the FPC binding module (4); S2, LCD cleaning, the conveying component (2) conveys the LCD screen to the cleaning platform (17), the cleaning platform (17) conveys the LCD screen through the cleaning chuck (18), and the cleaning chuck (18) contacts and wipes the LCD screen; S3, IC binding, the conveying component (2) transports the LCD screen to the attachment platform (21), and the ACF is punched onto the LCD screen via the IC binding module (20); S4, FPC loading, the conveying component (2) transports the LCD screen to the pre-pressing platform (25), the FPC loading robot (27) transports the external FPC to the FPC loading robot (27) material box, and the pre-pressing head (28) pre-presses the FPC onto the LCD screen; S5, FPC binding, the transmission component (2) transports the LCD screen to the local pressing platform (29), and the FPC is welded to the LCD screen via the FPC local pressing mechanism (7).