Automatic welding mechanism for backlight FPC (Flexible Printed Circuit) of liquid crystal display module

Abstract

The utility model discloses a liquid crystal display module backlight FPC automatic welding mechanism which comprises a feeding device, a welding alignment device and a discharging device. The welding alignment device comprises a positioning seat, a positioning assembly and a welding assembly, the positioning assembly is arranged on the positioning seat, the feeding manipulator is used for transferring the liquid crystal display module onto the positioning seat, and the positioning assembly is used for clamping and positioning the liquid crystal display module; the welding assembly is arranged above the positioning seat and is used for automatically welding a backlight FPC (Flexible Printed Circuit) of the liquid crystal display module on the positioning seat; the discharging device comprises a discharging manipulator, and the discharging manipulator is used for conducting discharging operation on the liquid crystal display modules completing welding operation. Therefore, full-automatic welding operation of the backlight FPC and the display screen FPC is achieved, a traditional mode that an electric soldering iron and a clamp are manually used for auxiliary welding is replaced, and then the working efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to an automatic welding mechanism for a backlight FPC of a liquid crystal display module. Background Art

[0002] Liquid crystal display modules are widely used in various electronic devices, such as mobile phones, televisions, computers, etc. In the field of manufacturing liquid crystal display modules, it is usually necessary to bind and connect the FPC (flexible circuit board) of the LCD screen in the liquid crystal display module with the backlight FPC pins in the backlight module. The traditional way of welding the backlight FPC is to use an electric soldering iron and a clamp to assist in welding, but this welding method is not only labor-intensive, but also has low welding efficiency. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a liquid crystal display module backlight FPC automatic welding mechanism, thereby replacing the manual welding method to improve the welding efficiency.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A liquid crystal display module backlight FPC automatic welding mechanism, comprising: a loading device, a welding alignment device and a unloading device, the loading device comprising a loading robot; the welding alignment device comprising a positioning seat, a positioning component and a welding component, the positioning component is arranged on the positioning seat, the loading robot is used to transfer the liquid crystal display module to the positioning seat, and the positioning component is used to clamp and position the liquid crystal display module; the welding component is arranged above the positioning seat, and the welding component is used to automatically weld the backlight FPC of the liquid crystal display module on the positioning seat; the unloading device comprises a unloading robot, and the unloading robot is used to unload the liquid crystal display module that has completed the welding operation.

[0006] In one embodiment, the loading device also includes a loading conveyor, which is located on one side of the loading robot. The loading conveyor is used to move the liquid crystal display module toward the welding alignment device, and the loading robot is used to move the liquid crystal display module on the loading conveyor to the positioning seat.

[0007] In one embodiment, the positioning assembly includes a lifting material picking member, a lifting material pressing member and a displacement member, the displacement member is arranged on the positioning seat, the lifting material picking member and the lifting material pressing member are respectively arranged on the displacement member, and the lifting material picking member is located below the lifting material pressing member, when the backlight FPC is located between the lifting material picking member and the lifting material pressing member, the lifting material picking member and the lifting material pressing member are used to position the backlight FPC.

[0008] In one embodiment, the displacement member is a linear motor module.

[0009] In one embodiment, the lifting and picking member includes a first lifting drive structure, a first lifting plate and a picking strip, one end of the first lifting plate is connected to the displacement member, the first lifting drive structure is connected to the first lifting plate, the first lifting drive structure is used to drive the first lifting plate to perform lifting and lowering movements, and the picking strip is arranged on one end of the first lifting plate away from the displacement member.

[0010] In one embodiment, the lifting and pressing member includes a second lifting drive structure, a second lifting plate and a pressing strip, one end of the second lifting plate is connected to the displacement member, the second lifting drive structure is connected to the second lifting plate, the second lifting drive structure is used to drive the second lifting plate to perform lifting and lowering movements, the pressing strip is arranged on one end of the second lifting plate away from the displacement member, and the pressing strip and the picking strip are arranged opposite to each other up and down.

[0011] In one embodiment, the material picking strip is in a "Z"-shaped structure, and the material pressing strip is also in a "Z"-shaped structure.

[0012] In one of the embodiments, the positioning assembly further includes a lifting positioning pressure plate, the lifting positioning pressure plate is connected to the displacement member, and the lifting positioning pressure plate is used to press and position the display screen FPC.

[0013] In one of the embodiments, a CCD camera is further included. The CCD camera is located above the positioning seat and is used to photograph and align the backlight FPC.

[0014] In one of the embodiments, the unloading device further includes a unloading conveyor, which is disposed on one side of the unloading robot, and is used to transfer the liquid crystal display module that has completed the welding operation to the next workstation.

[0015] Compared with the prior art, the utility model has at least the following advantages:

[0016] The utility model discloses a liquid crystal display module backlight FPC automatic welding mechanism, by providing a feeding device, a welding alignment device and a unloading device, so that the liquid crystal display module can be carried to the positioning seat by a feeding manipulator, and the backlight FPC and the display screen FPC on the liquid crystal display module are positioned by a positioning component to ensure the connection accuracy of the welding positions of the backlight FPC and the display screen FPC, and the backlight FPC and the display screen FPC are automatically welded by the welding component, and finally the liquid crystal display module that has completed the welding operation is unloaded by the unloading manipulator, so as to realize the fully automatic welding operation of the backlight FPC and the display screen FPC, so as to replace the traditional method of manually using an electric soldering iron and a clamp for auxiliary welding, thereby improving the welding work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the structure of the liquid crystal display module backlight FPC automatic welding mechanism in one embodiment of the utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure of the positioning seat, positioning assembly and feeding manipulator of the LCD module backlight FPC automatic welding mechanism;

[0020] Figure 3 for Figure 1 A schematic diagram of the structure of the positioning seat, positioning assembly and CCD camera of the automatic welding mechanism of the backlight FPC of the liquid crystal display module;

[0021] Figure 4 for Figure 1 A structural schematic diagram of the positioning seat, positioning component and welding component of the liquid crystal display module backlight FPC automatic welding mechanism. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0023] See also Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, an automatic welding mechanism 10 for a backlight FPC21 of a liquid crystal display module includes: a loading device 100, a welding alignment device 200 and a unloading device 300, wherein the loading device 100 includes a loading robot 110; the welding alignment device 200 includes a positioning seat 210, a positioning component 220 and a welding component 230, wherein the positioning component 220 is arranged on the positioning seat 210, the loading robot 110 is used to transfer the liquid crystal display module to the positioning seat 210, and the positioning component 220 is used to clamp and position the liquid crystal display module; the welding component is arranged above the positioning seat, and the welding component 230 is used to automatically weld the backlight FPC21 of the liquid crystal display module on the positioning seat 210; the unloading device 300 includes a unloading robot 310, and the unloading robot 310 is used to unload the liquid crystal display module 20 that has completed the welding operation.

[0024] It should be noted that the liquid crystal display module to be welded is transported to the positioning seat 210 by the loading manipulator 110 in the loading device 100, and the backlight FPC21 of the liquid crystal display module is positioned by the positioning assembly 220 on the positioning seat 210, so that the pins of the backlight FPC21 can be aligned with the binding area of ​​the display screen FPC22 to avoid welding deviation; then, the backlight FPC21 is soldered by the welding assembly 230, thereby completing the automatic welding of the backlight FPC21 of the liquid crystal display module; finally, the liquid crystal display module that has completed the welding operation is transported and unloaded by the unloading manipulator 310, thereby realizing automatic welding, reducing manual participation, and replacing the traditional method of manually using an electric soldering iron and a clamp for auxiliary welding, thereby improving the welding work efficiency. Further, the welding assembly 230 includes a welding head and a fixing frame, the welding head is installed on the fixing frame, and the welding end of the welding head faces the backlight FPC21, and the welding head can use an existing welding device to realize the welding operation of the backlight FPC21.

[0025] In one embodiment, the loading device 100 also includes a loading conveyor 120, which is located on one side of the loading robot 110. The loading conveyor 120 is used to move the liquid crystal display module toward the welding alignment device, and the loading robot 120 is used to transport the liquid crystal display module to the positioning seat 210.

[0026] It should be noted that the liquid crystal display modules to be welded are placed on the feeding conveyor 120, and the liquid crystal display modules to be welded are continuously transferred to the direction of the feeding manipulator 110 by the feeding conveyor 120 to realize automatic feeding, and then, the liquid crystal display modules on the feeding conveyor 120 are moved to the positioning seat 210 by the feeding manipulator 110, so as to realize automatic feeding. In this embodiment, the feeding conveyor 120 is a belt conveyor. Specifically, for example, the loading robot 110 includes a displacement module and a suction cup gripper, the suction cup gripper is connected to the displacement module, the displacement module is used to drive the suction cup gripper to perform linear displacement, and the suction cup gripper is used to adsorb and fix the LCD display module to be welded, and the LCD display module to be welded can be transported from the loading conveyor 120 to the positioning seat 210 through the displacement module; further, the suction cup gripper is composed of four adsorption nozzles, and the LCD display module is fixed by adsorption. Compared with the existing clamping fixation method, it can further avoid the problem of damage to the LCD display module, thereby ensuring the production quality of the LCD display module; in addition, the loading robot 110 can also adopt a traditional three-way robot.

[0027] In one embodiment, the positioning assembly 220 includes a lifting and picking member 221, a lifting and pressing member 222 and a displacement member 223. The displacement member 223 is arranged on the positioning seat 210. The lifting and picking member and the lifting and pressing member are respectively arranged on the displacement member, and the lifting and picking member is located below the lifting and pressing member. When the backlight FPC 21 is located between the lifting and picking member and the lifting and pressing member, the lifting and picking member and the lifting and pressing member are used to position the backlight FPC 21.

[0028] It should be noted that, when the loading robot 110 adsorbs the liquid crystal display module, the display screen FPC22 and the backlight FPC21 are drooping. When the liquid crystal display module is placed on the positioning seat 210, only the display screen FPC22 is located on the positioning seat 210. At this time, the backlight FPC21 is drooping, so it is necessary to lift the backlight FPC21 through the lifting and picking member 221 so that the backlight FPC21 can be overlapped on the display screen FPC22. At the same time, in order to improve the positioning accuracy of the backlight FPC21 and ensure that the pins of the backlight FPC21 can fit tightly with the binding position of the display screen FPC22, the backlight FPC21 is clamped and positioned through the lifting and pressing member 222 in cooperation with the lifting and picking member 221, so that the pins of the backlight FPC21 fit on the display screen FPC22, so that the subsequent welding assembly 230 can weld the backlight FPC21, and at the same time, it can ensure the welding quality of the backlight FPC21 and avoid welding deviation. Specifically, the displacement member 223 is used to drive the lifting material picking member and the lifting material pressing member to perform linear displacement. When a liquid crystal display module is placed on the positioning seat 210, the displacement member 223 drives the lifting material picking member and the lifting material pressing member to move in the direction close to the liquid crystal display module until the lifting material picking member is located below the backlight FPC 21. At this time, the lifting material picking member moves in the direction of the backlight FPC 21 and lifts the backlight FPC 21 to the top of the display screen. Then, the lifting material pressing member descends in the direction of the lifting material picking member until the lifting material pressing member presses the backlight FPC 21 on the lifting material picking member, thereby completing the clamping and positioning of the backlight FPC 21. Preferably, in this embodiment, the displacement member is a linear motor module.

[0029] Furthermore, the lifting and picking member 221 includes a first lifting drive structure, a first lifting plate 221a and a picking strip 221b. One end of the first lifting plate 221a is connected to the displacement member 223. The first lifting drive structure is connected to the first lifting plate 221a. The first lifting drive structure is used to drive the first lifting plate 221a to perform lifting and lowering movements. The picking strip 221b is arranged on one end of the first lifting plate 221a away from the displacement member 223.

[0030] It should be noted that a vertical plate is installed on the displacement member 223, and the first lifting plate 221a can be lifted and lowered on the vertical plate of the displacement member 223. In this embodiment, the first lifting drive structure can be a lifting cylinder, which drives the first lifting plate 221a to move up and down along the vertical plate. For example, a slide groove can be set on the vertical plate, and a slider can be set on the first lifting plate 221a to realize the lifting movement of the first lifting plate 221a, so that the picking strip 221b can pick up the backlight FPC21, so that the backlight FPC21 is located on the binding position of the display screen FPC22.

[0031] Furthermore, the lifting and pressing member 222 includes a second lifting drive structure, a second lifting plate 222a and a pressing strip 222b. One end of the second lifting plate 222a is connected to the displacement member 223. The second lifting drive structure is connected to the second lifting plate 222a. The second lifting drive structure is used to drive the second lifting plate 222a to perform lifting and lowering movements. The pressing strip 222b is arranged on one end of the second lifting plate 222a away from the displacement member 223. The pressing strip 222b and the picking strip 221b are arranged opposite to each other up and down.

[0032] It should be noted that, in this embodiment, the second lifting drive structure can also be a lifting cylinder, which drives the second lifting plate 222a to move up and down along the vertical plate. For example, a sliding groove that matches the second lifting plate 222a can be opened on the vertical plate, and a slider can be set on the second lifting plate 222a to achieve the lifting movement of the second lifting plate 222a, so as to drive the pressing strip 222b to move up and down, so that the pressing strip 222a can press and hold the backlight FPC21, that is, the backlight FPC21 is clamped between the pressing strip 222b and the picking strip 221b. In this way, the clamping and positioning of the backlight FPC21 is achieved.

[0033] Further, preferably, the material picking strip 221b is in a "Z"-shaped structure, and the material pressing strip 222b is also in a "Z"-shaped structure. One end of the material picking strip 221b is arranged on the first lifting plate 221a, and one end is bent and extended downward to form a position avoiding the first lifting plate 221a; similarly, one end of the material pressing strip 222b is arranged on the second lifting plate 222a, and one end is bent and extended downward to form a position avoiding the second lifting plate 222a. The material picking strip 221b and the end of the material pressing strip 222b that is bent and extended downward cooperate with each other, thereby achieving the clamping and positioning of the backlight FPC 21.

[0034] Furthermore, the positioning assembly 220 also includes a lifting and positioning plate 224, which is connected to the displacement member 223, and is used to hold and position the display screen FPC22. In this embodiment, in order to reduce the contact area between the liquid crystal display module and other parts, thereby reducing damage to the display screen and other components of the liquid crystal display module, only the display screen FPC22 is placed on the positioning seat 210. Therefore, it is necessary to hold and position the display screen FPC22 by the lifting and positioning plate 224, so as to avoid the problem of the lifting and positioning plate 224 being skewed, and then ensure the accuracy of the welding between the backlight FPC21 and the display screen FPC22. The lifting and positioning plate 224 is connected to the lifting cylinder, and the lifting and positioning plate 224 is driven by the lifting cylinder to perform lifting and lowering movements along the upper plate of the displacement member 223.

[0035] In one embodiment, the automatic welding mechanism 10 for the backlight FPC21 of the liquid crystal display module further includes a CCD camera 400, which is located above the positioning seat 210, and is used to shoot and align the backlight FPC21. The CCD camera 400 shoots the relative position diagram between the backlight FPC21 and the display screen FPC22, thereby obtaining information on whether the pins of the backlight FPC21 are aligned with the display screen FPC22. Through this information, the movement of the positioning component is controlled, thereby realizing the correction operation of the backlight FPC21. In this way, the accuracy of the welding position of the backlight FPC21 can be ensured to the greatest extent, thereby improving the welding quality.

[0036] In one embodiment, the unloading device 300 further includes an unloading conveyor 320, which is disposed on one side of the unloading manipulator 310. The unloading conveyor 320 is used to transfer the LCD module that has completed the welding operation to the next station. For example, the unloading conveyor 320 is a belt conveyor. After the unloading manipulator 310 transfers the LCD module on the positioning seat 210 to the belt conveyor, the LCD module is transferred to the next station through the belt conveyor, thereby realizing automatic unloading, thereby improving the production efficiency of the product. In this embodiment, the structure of the unloading manipulator is the same as that of the loading manipulator.

[0037] Furthermore, it should be noted that there are three welding stations, each of which is provided with a positioning seat 210, and welding operations are performed at the three positions at the same time, thereby improving welding efficiency. In addition, the loading area, the installation area of ​​the CCD camera, the installation area of ​​the welding assembly, and the unloading area can be divided into four areas, or they can be concentrated in the same position. When the loading area, the installation area of ​​the CCD camera, the installation area of ​​the welding assembly, and the unloading area are divided into four positions, it is necessary to set a transfer module to transfer the positioning seat 210 to the loading area, the installation area of ​​the CCD camera, the installation area of ​​the welding assembly, and the unloading area, respectively, and perform loading operations, shooting alignment operations, welding operations, and unloading operations respectively. For example, the transfer module can be a linear motor module.

[0038] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A liquid crystal display module backlight FPC automatic welding mechanism, characterized in that: include: A feeding device, the feeding device comprising a feeding manipulator; A welding alignment device, the welding alignment device comprises a positioning seat, a positioning assembly and a welding assembly, the positioning assembly is arranged on the positioning seat, the loading manipulator is used to transfer the liquid crystal display module to the positioning seat, and the positioning assembly is used to clamp and position the liquid crystal display module; the welding assembly is arranged above the positioning seat, and the welding assembly is used to automatically weld the backlight FPC of the liquid crystal display module on the positioning seat; and A material unloading device, wherein the material unloading device comprises a material unloading robot, and the material unloading robot is used to unload the liquid crystal display module after the welding operation is completed.

2. The liquid crystal display module backlight FPC automatic welding mechanism according to claim 1, characterized in that: The feeding device also includes a feeding conveyor, which is located on one side of the feeding robot. The feeding conveyor is used to move the liquid crystal display module toward the welding alignment device, and the feeding robot is used to move the liquid crystal display module on the feeding conveyor to the positioning seat.

3. The liquid crystal display module backlight FPC automatic welding mechanism according to claim 1, characterized in that: The positioning assembly includes a lifting material picking member, a lifting material pressing member and a displacement member, the displacement member is arranged on the positioning seat, the lifting material picking member and the lifting material pressing member are respectively arranged on the displacement member, and the lifting material picking member is located below the lifting material pressing member, when the backlight FPC is located between the lifting material picking member and the lifting material pressing member, the lifting material picking member and the lifting material pressing member are used to position the backlight FPC.

4. The liquid crystal display module backlight FPC automatic welding mechanism according to claim 3, characterized in that: The displacement member is a linear motor module.

5. The liquid crystal display module backlight FPC automatic welding mechanism according to claim 4, characterized in that: The lifting and picking member includes a first lifting drive structure, a first lifting plate and a picking strip, one end of the first lifting plate is connected to the displacement member, the first lifting drive structure is connected to the first lifting plate, the first lifting drive structure is used to drive the first lifting plate to perform lifting movement, and the picking strip is arranged on one end of the first lifting plate away from the displacement member.

6. The liquid crystal display module backlight FPC automatic welding mechanism according to claim 5, characterized in that: The lifting and lowering press member includes a second lifting drive structure, a second lifting plate and a press strip, one end of the second lifting plate is connected to the displacement member, the second lifting drive structure is connected to the second lifting plate, the second lifting drive structure is used to drive the second lifting plate to perform lifting and lowering movements, the press strip is arranged on one end of the second lifting plate away from the displacement member, and the press strip and the picking strip are arranged opposite to each other up and down.

7. The liquid crystal display module backlight FPC automatic welding mechanism according to claim 6, characterized in that: The material picking strip is in a "Z"-shaped structure, and the material pressing strip is also in a "Z"-shaped structure.

8. The liquid crystal display module backlight FPC automatic welding mechanism according to claim 7, characterized in that: The positioning assembly further comprises a lifting positioning pressure plate, the lifting positioning pressure plate is connected to the displacement member, and the lifting positioning pressure plate is used to press and hold the display screen FPC for positioning.

9. The liquid crystal display module backlight FPC automatic welding mechanism according to claim 1, characterized in that: It also includes a CCD camera, which is located above the positioning seat and is used to shoot and align the backlight FPC.

10. The liquid crystal display module backlight FPC automatic welding mechanism according to claim 1, characterized in that: The unloading device also includes an unloading conveyor, which is arranged on one side of the unloading robot and is used to transfer the liquid crystal display module that has completed the welding operation to the next workstation.

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