FPC Bending Machine and Bending Method

Abstract

The present invention discloses an FPC bending machine and a bending method, comprising: a loading module; a film tearing module, including a film tearing platform and a film tearing mechanism, wherein the loading module feeds the screen onto the film tearing platform, and the film tearing mechanism moves relative to the film tearing platform and tears the film of the screen; a reverse folding module, including a reverse folding mechanism, a detection mechanism and a pressure maintaining mechanism, wherein the loading module transfers the screen from the film tearing platform to the reverse folding mechanism, the reverse folding mechanism performs reverse folding on the FPC of the screen, the detection mechanism takes pictures in real time to detect the reverse folding position of the FPC on the screen, and the pressure maintaining mechanism moves up and down to press the FPC of the screen; a discharging module, including a discharging mechanism and a sorting mechanism, wherein the discharging mechanism discharges the screen, and the sorting mechanism takes pictures to detect and sort the screen. The present invention solves the problems that manual film tearing and bending are prone to cause vision decline and low manual efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile phone screen modules, and particularly to an FPC bending machine and a bending method. Background Art

[0002] A mobile phone screen generally consists of a liquid crystal display screen and a backlight module. The FPC is an important component connecting the liquid crystal display screen and the mobile phone main board, responsible for transmitting signals and power. During the assembly process of the mobile phone liquid crystal module, one end of the FPC is connected to the liquid crystal display screen, and the other end is fixed to the backlight module through a certain bending or folding, thereby completing the electrical connection of the liquid crystal module and ensuring the mechanical stability of the module.

[0003] For the FPC reverse folding process of the mobile phone liquid crystal module, currently, it is manual operation and semi-automatic device alignment and manual pressing operation. And before reverse folding, the protective film on the screen module needs to be torn off. The manual labor intensity is high, it is easy to get tired, the operation is not standard, the yield is low, rework is time-consuming, the production capacity is low, and the detection of the reverse folding accuracy depends on mechanical two-dimensional and other methods for measurement, with poor accuracy, people are prone to eye fatigue and vision decline, resulting in a large turnover of personnel. Summary of the Invention

[0004] The main purpose of the present invention is to provide an FPC bending machine and a bending method, aiming to solve the problems of easy vision decline and low manual efficiency when manually tearing the film and bending.

[0005] To achieve the above object, the present invention proposes an FPC bending machine, including:

[0006] A loading module;

[0007] A film tearing module, including a film tearing platform and a film tearing mechanism. The loading module feeds the screen onto the film tearing platform, and the film tearing mechanism moves relative to the film tearing platform and tears the film of the screen.

[0008] A reverse folding module, including a reverse folding mechanism, a detection mechanism, and a pressure maintaining mechanism. The loading module transfers the screen from the film tearing platform to the reverse folding mechanism. The reverse folding mechanism performs reverse folding on the FPC of the screen. The detection mechanism takes real-time photos to detect the reverse folding position of the FPC on the screen, and the pressure maintaining mechanism lifts and presses the FPC of the screen.

[0009] A discharging module, including a discharging mechanism and a sorting mechanism. The discharging mechanism discharges the screen, and the sorting mechanism takes photos to detect and sort the screen.

[0010] Optionally, the loading module includes a loading belt, a first loading robot, and a second loading robot. The loading belt receives and conveys the screens. The first loading robot reciprocates between the loading belt and the film peeling platform to carry the screens. The second loading robot reciprocates between the film peeling platform and the folding mechanism to carry the screens.

[0011] Optionally, the loading module further includes a flipping assembly located at the loading point of the loading belt. The flipping assembly is used to flip the screen so that the film peeling surface faces upward.

[0012] Optionally, the film peeling mechanism includes a first moving assembly and a film peeling bracket. The film peeling bracket is fixed to the first moving assembly and moves synchronously. The film peeling bracket is provided with a film peeling roller and a film peeling cylinder. The film peeling roller is used to bond the protective film and separate it from the screen. The film peeling cylinder is fixed to the film peeling bracket and pushes the film peeling roller to move up and down.

[0013] Optionally, the film peeling platform includes a first film peeling position, a second film peeling position, and a rotating platform. The first film peeling position and the second film peeling position are respectively located on both sides of the rotating platform. The rotating platform rotates to drive the first film peeling position and the second film peeling position to switch between the two positions. The first film peeling position and the second film peeling position vacuum adsorb the screen.

[0014] Optionally, the folding mechanism includes a second moving assembly, a folding platform, and a folding member. The second moving assembly drives the folding platform to move under the detection mechanism. The folding member clamps the FPC of the screen and folds it. The folding platform adsorbs the screen.

[0015] Optionally, the folding member includes a folding shaft and a clamp cylinder connected to the folding shaft. The folding shaft rotates, and the clamp cylinder clamps the FPC and folds it synchronously. And the clamp cylinder moves the folding position of the FPC in the horizontal and vertical directions.

[0016] Optionally, the detection mechanism includes a detection bracket and a detection camera fixed to the detection bracket. A light-emitting panel for irradiating the screen is arranged below the detection camera. The light-emitting panel is provided with a detection hole for the detection camera to receive light directly below the detection camera.

[0017] Optionally, the unloading mechanism includes an unloading robot and an unloading belt. The unloading robot transfers the screen to the unloading belt. The sorting mechanism includes a sorting detection member and a sorting robot. The sorting detection member is arranged above the unloading belt and takes pictures to detect the position of the FPC on the screen. The sorting robot discards the screens with NG detection.

[0018] A bending method, using the above-mentioned FPC bending machine, includes the following steps:

[0019] The loading module transfers the screen to the film tearing platform;

[0020] The film tearing mechanism moves to the film tearing platform and tears the film of the screen;

[0021] The loading module transfers the screen after film tearing to the reverse folding mechanism. The reverse folding mechanism performs reverse folding on the FPC of the screen. At the same time, the detection mechanism takes pictures and detects the FPC. The reverse folding mechanism performs compensated reverse folding on the FPC according to the detection results of the detection mechanism;

[0022] The pressure maintaining mechanism presses the reverse-folded FPC to fit the screen;

[0023] The unloading mechanism unloads the screen after pressing. The sorting mechanism takes pictures and detects the FPC of the screen and sorts the screen according to the detection results.

[0024] The beneficial effects of the present invention are as follows: Through automatic loading, film tearing and reverse folding, the FPC on the screen can be accurately reverse-folded at a predetermined position, improving the efficiency of FPC bending and the product qualification rate, and avoiding the low efficiency and damage to the human body caused by manual operation. During the FPC bending process of the screen, the loading module receives the screen and automatically aligns and loads it. The film tearing mechanism tears the film of the screen. The loading module transfers the screen after film tearing to the reverse folding mechanism. The reverse folding mechanism performs reverse folding on the FPC of the screen. The detection mechanism takes pictures and detects the position of the FPC. After repeated picture taking detection and reverse folding, the pressure maintaining mechanism presses the FPC to fit the screen. The unloading mechanism and the sorting mechanism respectively unload and sort the completed screen. During the reverse folding of the screen FPC, the FPC bending machine is fully automated, not only improving the reverse folding efficiency, but also improving the qualification rate of the screen after FPC reverse folding. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0026] Figure 1 It is a schematic diagram of the overall structure of the FPC bending machine of the present invention;

[0027] Figure 2 It is an exploded structure schematic diagram of the FPC bending machine of the present invention;

[0028] Figure 3It is a top view structural schematic diagram of the FPC bending machine of the present invention;

[0029] Figure 4 It is an overall structural schematic diagram of the loading belt in the present invention;

[0030] Figure 5 It is an overall structural schematic diagram of the flipping assembly in the present invention;

[0031] Figure 6 It is an overall structural schematic diagram of the first loading manipulator in the present invention;

[0032] Figure 7 It is an overall structural schematic diagram of the film tearing mechanism in the present invention;

[0033] Figure 8 It is an overall structural schematic diagram of the film tearing platform in the present invention;

[0034] Figure 9 It is an overall structural schematic diagram of the reverse folding mechanism in the present invention;

[0035] Figure 10 It is an overall structural schematic diagram of the detection mechanism in the present invention;

[0036] Figure 11 It is an overall structural schematic diagram of the pressure maintaining mechanism in the present invention;

[0037] Figure 12 It is an overall structural schematic diagram of the unloading manipulator in the present invention.

[0038] Label description:

[0039] 1. Loading module; 11. Loading belt; 111. In-position optical fiber; 112. Calibration cylinder; 113. Driving motor; 12. First loading manipulator; 121. Loading bracket; 122. Loading moving module; 123. Loading suction attachment; 13. Second loading manipulator; 14. Flipping assembly; 141. Flipping cylinder; 142. Lifting cylinder; 143. Flipping suction attachment;

[0040] 2. Film tearing module; 21. Film tearing platform; 211. First film tearing position; 212. Second film tearing position; 213. Rotating platform; 22. Film tearing mechanism; 221. First moving component; 222. Film tearing bracket; 223. Film tearing roller; 224. Film tearing cylinder; 225. Film tearing auxiliary wheel;

[0041] 3. Folding module; 31. Folding mechanism; 311. Second moving component; 312. Folding platform; 313. Folding part; 3131. Folding shaft; 3132. Clip cylinder; 314. Adjusting part; 3141. Adjusting cylinder; 3142. Pushing plate; 32. Detection mechanism; 321. Detection bracket; 322. Detection camera; 323. Light-emitting panel; 3231. Detection hole; 33. Pressure-holding mechanism; 331. First moving cylinder; 332. Second moving cylinder; 333. Pressing plate;

[0042] 4. Unloading module; 41. Unloading mechanism; 411. Unloading manipulator; 4111. Unloading bracket; 4112. Unloading moving module; 4113. Unloading suction attachment; 412. Unloading belt; 4121. OK belt; 4122. NG belt; 42. Material sorting mechanism; 421. Material sorting detection part; 422. Material sorting manipulator;

[0043] 5. Machine case; 51. Control module;

[0044] 6. Screen;

[0045] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0048] In addition, if the embodiments of the present invention involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, or scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or inability to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0049] An embodiment of the present invention provides an FPC bending machine. Refer to Figures 1 to 12 , including:

[0050] A loading module 1; a film tearing module 2 includes a film tearing platform 21 and a film tearing mechanism 22. The loading module 1 feeds the screen 6 onto the film tearing platform 21, and the film tearing mechanism 22 moves relative to the film tearing platform 21 and tears the film of the screen 6; a reverse folding module 3 includes a reverse folding mechanism 31, a detection mechanism 32, and a pressure maintaining mechanism 33. The loading module 1 transfers the screen 6 from the film tearing platform 21 to the reverse folding mechanism 31. The reverse folding mechanism 31 reversely folds the FPC of the screen 6. The detection mechanism 32 takes real-time photos to detect the reverse folding position of the FPC on the screen 6. The pressure maintaining mechanism 33 moves up and down to press the FPC of the screen 6; a discharging module 4 includes a discharging mechanism 41 and a sorting mechanism 42. The discharging mechanism 41 discharges the screen 6, and the sorting mechanism 42 takes photos to detect and sort the screen 6.

[0051] Refer to Figures 1 to 3, in this embodiment, through automatic feeding, film tearing and reverse folding, the FPC on the screen 6 can be accurately reverse folded at a predetermined position, improving the efficiency of FPC folding and the product qualification rate, and avoiding the low efficiency and damage to the human body caused by manual operation. During the FPC folding process of the screen 6, the feeding module 1 receives the screen 6 and automatically aligns and feeds it. The film tearing mechanism 22 tears the film of the screen 6. The feeding module 1 transfers the screen 6 after film tearing to the reverse folding mechanism 31. The reverse folding mechanism 31 reverse folds the FPC of the screen 6. The detection mechanism 32 takes pictures and detects the position of the FPC. After repeated picture taking detection and reverse folding, the pressure maintaining mechanism 33 presses and adheres the FPC to the screen 6. The discharging mechanism 41 and the material separating mechanism 42 respectively discharge and separate the completed screen 6. During the reverse folding of the FPC of the screen 6, the FPC folding machine is fully automated, not only improving the reverse folding efficiency, but also improving the qualification rate of the screen 6 after FPC reverse folding. Specifically, the feeding module 1 receives the screen 6 conveyed from upstream, and the feeding module 1 feeds each screen 6 to be reverse folded to a fixed position on the film tearing platform 21. The film tearing platform 21 adsorbs and fixes the screen 6 to keep the screen 6 stable. The film tearing mechanism 22 tears the protective film on the screen 6 for the subsequent reverse folding mechanism 31 to reverse fold the FPC. The discharging module 4 discharges and sorts the screen 6 after reverse folding, making the entire film tearing and reverse folding process not require manual participation, reducing the loss of labor, and greatly improving the accuracy of reverse folding.

[0052] In this embodiment, the FPC bending machine further includes a machine housing 5. The loading module 1, the film tearing module 2, the reverse folding module 3, and the unloading module 4 are all arranged inside the machine housing 5. The machine housing 5 is provided with a control module 51, which is used to control the operation of each module in the FPC bending machine. An operation control panel for operators is arranged outside the machine housing 5, through which the operation conditions between each module can be controlled and detected in real time. It should be noted that the film tearing platform 21 adopts the method of vacuum adsorption. The film tearing platform 21 is provided with a plurality of vacuum adsorption holes and vacuum sensors. When the loading module 1 transfers the screen 6 onto the film tearing platform 21, the screen 6 covers the vacuum adsorption holes, and the vacuum sensor senses that the screen 6 is attached to the film tearing platform 21, and the vacuum adsorption holes start vacuum pumping to make the vacuum adsorption holes adsorb the screen 6, and the screen 6 is fixed on the film tearing platform 21. Specifically, the vacuum sensor is electrically connected to the control module 51. When the vacuum sensor detects that vacuum adsorption is achieved between the screen 6 and the film tearing platform 21, the vacuum sensor sends an electrical signal to the control module 51, so that the control module 51 can determine whether the film tearing platform 21 has fixed and adsorbed the screen 6. When the screen 6 accidentally detaches from the film tearing platform 21 during the film tearing process, the vacuum sensor senses the disappearance of the vacuum adsorption state of the vacuum adsorption holes and sends an electrical signal to the control module 51, and the control module 51 determines that the screen 6 has accidentally detached and sends a signal to remind the operator. It can be understood that the loading module 1 also adopts the method of vacuum adsorption during the process of transferring to the film tearing platform 21, and its vacuum adsorption effect is the same as that of the film tearing platform 21 adsorbing the screen 6.

[0053] Further, referring to Figures 3 to 6, the loading module 1 includes a loading belt 11, a first loading manipulator 12 and a second loading manipulator 13. The loading belt 11 receives and conveys the screen 6. The first loading manipulator 12 reciprocates between the loading belt 11 and the film tearing platform 21 to carry the screen 6. The second loading manipulator 13 reciprocates between the film tearing platform 21 and the folding mechanism 31 to carry the screen 6. The loading belt 11 is used to receive the screen 6 transferred from the upstream equipment and convey it. The first loading manipulator 12 reciprocates between the loading belt 11 and the film tearing platform 21. The first loading manipulator 12 feeds the screen 6 from the loading end of the loading belt 11 to the film tearing platform 21. The second loading manipulator 13 can reciprocate between the film tearing platform 21 and the folding mechanism 31. The second loading manipulator 13 is used to transfer the screen 6 after film tearing from the film tearing platform 21 to the folding mechanism 31 for FPC folding. It can be understood that the first loading manipulator 12 and the second loading manipulator 13 reciprocate to transfer the screen 6 along the predetermined moving paths by the control module 51. Of course, positioning detection components can also be provided on the first loading manipulator 12 and the second loading manipulator 13 to take pictures of the position of the screen 6 each time the screen 6 is transferred, so as to compensate for the position error of the screen 6 and make the loading of the screen 6 more accurate.

[0054] Reference Figure 4, in this embodiment, the loading belt 11 includes a feeding end and a material taking end. The feeding end is used to receive the screen 6 transferred by the upstream equipment, and the material taking end is for the first loading manipulator 12 to pick up the screen 6. The material taking end is provided with an in-place optical fiber 111 for detecting the screen 6 and a calibration cylinder 112. The in-place optical fiber 111 is horizontally arranged at the end of the material taking end and can also prevent the screen 6 from accidentally slipping off the loading belt 11. The in-place optical fiber 111 and the calibration cylinder 112 cooperate to push the screen 6 to the material taking position of the first loading manipulator 12. Specifically, the in-place optical fiber 111 can judge whether the screen 6 is in place through photoelectric induction to control the loading belt 11 to stop moving. When the screen 6 on the in-place optical fiber 111 is picked up, the in-place optical fiber 111 sends a signal to make the loading belt 11 continue the next movement. The calibration cylinder 112 includes an X-direction cylinder and a Y-direction cylinder. The X-direction cylinder is used to push the screen 6 to move horizontally, and the Y-direction cylinder is used to push the screen 6 to move vertically. The Y-direction cylinder is arranged on the side of the loading belt 11, and the X-direction cylinder is arranged at the end of the loading belt 11 and on the same side as the in-place optical fiber 111. During the process of the screen 6 being conveyed along the loading belt 11, it is pushed by the X-direction cylinder and the Y-direction cylinder to make the screen 6 located at the picking point position of the first loading manipulator 12, so that the first loading manipulator 12 can accurately pick up the screen 6. It can be understood that the loading belt 11 also includes a driving motor 113, and the driving motor 113 drives the entire loading belt 11 to move through a pulley, so that the screen 6 can move from the feeding end to the material taking end. The feeding end is provided with an anti-overlapping optical fiber, which is used to detect the screen 6 and prevent the screen 6 from overlapping. When the upstream screen 6 is placed at the feeding end, the anti-overlapping optical fiber detects the screen 6 and sends a signal. At this time, the upstream manipulator cannot continue to place the screen 6 at the feeding end. When the screen 6 moves with the loading belt 11 and leaves the feeding end, the signal of the anti-overlapping optical fiber is released, and the upstream manipulator can continue to place the screen 6 at the feeding end, thereby preventing multiple screens 6 from overlapping at the feeding end.

[0055] Reference Figure 6, the first loading manipulator 12 includes a loading support 121, a loading moving module 122 and a loading suction attachment 123. The loading support 121 is two spaced support rods. One end of the loading support 121 is fixed to the machine housing 5, and the other end of the loading support 121 is connected to and used to support the loading moving module 122. The loading moving module 122 includes a Y-direction module and a Z-direction module. In this embodiment, the X-direction represents the horizontal direction, the Y-direction represents the longitudinal direction, and the Z-direction represents the vertical direction. The Y-direction module is fixed to the loading support 121 and extends longitudinally. The Z-direction module is arranged on the Y-direction module and extends vertically, and the Z-direction module can slide along the Y-direction module. The loading suction attachment 123 is arranged on the Z-direction module and moves vertically up and down along the Z-direction module. Specifically, both the Z-direction module and the Y-direction module are composed of a synchronous belt, a servo motor and a lead screw, making their running speed fast and stability good. The loading suction attachment 123 is provided with a vacuum suction cup and a scanning part. The scanning part can scan and identify the screen 6. The vacuum suction cup adsorbs the screen 6 by means of vacuum adsorption to achieve the purpose of picking up the screen 6. During the process of transferring the screen 6, the Y-direction module is activated, so that the Z-direction module slides along the lead screw of the Y-direction module to drive the loading suction attachment 123 to move to directly above the loading point of the loading belt 11. After the scanning part identifies the screen 6, the Z-direction module is activated, and the loading suction attachment 123 descends along the lead screw of the Z-direction module, so that the vacuum suction cup contacts the screen 6 and the vacuum pumping is started. After the screen 6 is adsorbed, the loading suction attachment 123 rises, and the Z-direction module moves along the lead screw of the Y-direction module to above the film tearing platform 21. The loading suction attachment 123 descends again to place the screen 6 on the film tearing platform 21. The loading suction attachment 123 is also provided with the same vacuum induction parts as the above-mentioned film tearing platform 21 to judge whether the screen 6 accidentally falls off during the transfer process.

[0056] The second loading manipulator 13 has the same structure as the first loading manipulator 12. The difference is that the Y-direction module in the first loading manipulator 12 is replaced by an X-direction module, so that the loading suction attachment 123 can move from the film tearing platform 21 to the position of the folding mechanism 31, thereby realizing the transfer and loading of the screen 6 after film tearing.

[0057] Further, referring to Figure 5, the loading module 1 further includes a flipping component 14. The flipping component 14 is located at the loading point of the loading belt 11. The flipping component 14 is used to flip the screen 6 so that the film tearing surface faces upward. The flipping component 14 is used to flip the screen 6 so that the film tearing surface faces upward, so as to be picked up and transferred by the first loading manipulator 12. In this embodiment, the flipping component 14 includes a lifting cylinder 142, a flipping cylinder 141, and a flipping suction attachment 143. The lifting cylinder 142 is fixed to the bracket of the machine housing 5. The flipping cylinder 141 is arranged on the lifting cylinder 142, so that the lifting cylinder 142 can drive the flipping cylinder 141 to move up and down when starting. One side of the flipping cylinder 141 is connected to the lifting cylinder 142, and the other side can rotate circumferentially by 180 degrees. The flipping suction attachment 143 is fixedly connected to the rotatable side of the flipping cylinder 141, so that the flipping suction attachment 143 can rotate from the downward direction to the upward direction. The flipping suction attachment 143 is used to adsorb the screen 6. Similarly, the flipping suction attachment 143 uses the vacuum adsorption method. Specifically, when in use, when the screen 6 moves to the picking position of the first loading manipulator 12, the flipping cylinder 141 drives the flipping suction attachment 143 to descend to the position of the screen 6, so that the flipping suction attachment 143 starts to vacuum-adsorb the screen 6. At the same time, the vacuum sensor on the flipping suction attachment 143 senses whether the screen 6 is adsorbed. When the screen 6 is adsorbed, the flipping cylinder 141 starts to drive the flipping suction attachment 143 to flip by 180 degrees, so that the film tearing surface of the screen 6 faces upward, which is convenient for the subsequent first loading manipulator 12 to directly pick up the screen 6 and transfer it to the film tearing platform 21 for direct film tearing. It can be understood that a detection element for judging whether the film tearing surface of the screen 6 faces upward is provided on the flipping suction attachment 143. When the film tearing surface of the screen 6 is initially upward, the flipping component 14 does not start. When it is judged that the film tearing surface of the screen 6 faces downward, the flipping component 14 starts.

[0058] Further, referring to Figure 7 , the film tearing mechanism 22 includes a first moving component 221 and a film tearing bracket 222. The film tearing bracket 222 is fixed to the first moving component 221 and moves synchronously. The film tearing bracket 222 is provided with a film tearing roller 223 and a film tearing cylinder 224. The film tearing roller 223 is used to bond the protective film and separate it from the screen 6. The film tearing cylinder 224 is fixed to the film tearing bracket 222 and pushes the film tearing roller 223 to move up and down. The first moving component 221 includes a first X-direction module and a first Y-direction module. The first X-direction module and the first Y-direction module have the same structure and function as the above-mentioned X-direction module and Y-direction module. Specifically, the film tearing bracket 222 is arranged on the first Y-direction module, and the first Y-direction module is arranged on the first X-direction module, so that the first Y-direction module can move horizontally along the first X-direction module, and the film tearing bracket 222 can move longitudinally along the first Y-direction module to adjust the positions of the film tearing roller 223 and the film tearing cylinder 224.

[0059] The film tearing cylinder 224 is arranged on the film tearing support 222. The film tearing roller 223 is connected to the pushing end of the film tearing cylinder 224. The film tearing cylinder 224 can push the film tearing roller 223 to move up and down vertically. A tape conveying roller for conveying the tape is also arranged on the upper side of the film tearing roller 223. When the film tearing platform 21 receives the screen 6, the film tearing support 222 moves along the first X-direction module and the first Y-direction module. The film tearing cylinder 224 pushes the film tearing roller 223 to descend to the film tearing position, so that the film tearing roller 223 adheres to the end corner of the protective film of the screen 6. At this time, the film tearing cylinder 224 drives the film tearing roller 223 to retract upward, making the protective film tilt upward and separate from the screen 6. Then, driven by the first moving assembly 221, the film tearing roller 223 tears the protective film from the screen 6. The film tearing mechanism 22 further includes a film tearing auxiliary roller 225 fixed to the film tearing support 222. The film tearing auxiliary roller 225 is located on one side of the film tearing roller 223 to prevent the tape from being too low and touching the screen 6, thereby affecting the film tearing process. It can be understood that the film tearing cylinder 224 is provided with a pressure detection component and a pressure regulating valve. By sensing the pressure between the screen 6 and the support of the film tearing roller 223, the pressure of the film tearing cylinder 224 is adjusted to prevent the screen 6 from being damaged.

[0060] Further, referring to Figure 8 , the film tearing platform 21 includes a first film tearing position 211, a second film tearing position 212 and a rotating platform 213. The first film tearing position 211 and the second film tearing position 212 are respectively located on both sides of the rotating platform 213. The rotating platform 213 rotates to drive the first film tearing position 211 and the second film tearing position 212 to rotate and switch between two positions. The first film tearing position 211 and the second film tearing position 212 vacuum adsorb the screen 6. In this embodiment, in order to improve the film tearing efficiency, the film tearing platform 21 is provided with two film tearing positions. The first film tearing position 211 and the second film tearing position 212 have the same structure. The rotating platform 213 is arranged between the first film tearing position 211 and the second film tearing position 212 and can drive the first film tearing position 211 and the second film tearing position 212 to switch positions with each other. Preferably, every time the rotating platform 213 rotates once, the first film tearing position 211 and the second film tearing position 212 rotate 180 degrees. Thus, when the screen 6 on the first film tearing position 211 is being torn, the second film tearing position 212 can simultaneously perform loading, improving the efficiency. Both the first film tearing position 211 and the second film tearing position 212 are provided with vacuum suction cups, and their specific structures have been described above. Both the first film tearing position 211 and the second film tearing position 212 are provided with an X-direction pushing cylinder and a Y-direction pushing cylinder to push the screen 6 to the preset position at the film tearing point.

[0061] Further, referring to Figure 9, the folding mechanism 31 includes a second moving component 311, a folding platform 312 and a folding member 313. The second moving component 311 drives the folding platform 312 to move below the detection mechanism 32. The folding member 313 clamps the FPC of the screen 6 and folds it. The folding platform 312 adsorbs the screen 6. The folding mechanism 31 is used to fold the FPC of the screen 6 so that it is folded to the backlight plate of the screen 6, which is convenient for connection with an external main board and saves space. In this embodiment, the second moving component 311 includes a second X-direction module and a second Y-direction module. The second X-direction module and the second Y-direction module have the same structure and function as the above-mentioned first X-direction module and first Y-direction module. The second X-direction module and the second Y-direction module are both composed of a synchronous belt, a servo motor and a lead screw. Specifically, the folding platform 312 and the folding member 313 are arranged on the second Y-direction module, and the second Y-direction module is arranged on the second X-direction module, so that the second Y-direction module can move horizontally along the second X-direction module, and the folding platform 312 and the folding member 313 can move vertically along the first Y-direction module.

[0062] The folding platform 312 adsorbs and fixes the film-removed screen 6 by means of vacuum adsorption. The vacuum adsorption structure and function of the folding platform 312 are the same as those of the above-mentioned film-removing platform 21, and will not be elaborated here. The second loading manipulator 13 can transfer the screen 6 from the film-removing platform 21 to the folding platform 312. The second moving component 311 drives the folding platform 312 and the folding member 313 to move, so that the folding platform 312 is located below the detection mechanism 32. Under the photographing detection of the detection mechanism 32, the folding member 313 folds the FPC of the screen 6 to the backlight plate side of the screen 6, so that it is folded while being detected, so as to improve the qualified rate of the product.

[0063] Further, the folding member 313 includes a turning shaft 3131 and a clamp cylinder 3132 connected to the turning shaft 3131. The turning shaft 3131 rotates, and the clamp cylinder 3132 clamps the FPC and folds it synchronously. And the clamp cylinder 3132 moves the folding position of the FPC horizontally and vertically. In this embodiment, the turning shaft 3131 is driven to rotate by a turning cylinder 141, and the turning cylinder 141 can drive the turning shaft 3131 to rotate at least 180 degrees, so that the clamp cylinder connected to the turning shaft 3131 makes at least 180-degree flips.

[0064] The clamping cylinder 3132 is located on the side of the folding platform 312 so that the clamping cylinder 3132 can clamp the FPC and perform folding. Specifically, the clamping cylinder 3132 includes three connected cylinder clamping plates. One end of the first cylinder clamping plate is connected to the end of the folding shaft 3131, and the other end is provided with a chute for the second cylinder clamping plate to slide. The second cylinder clamping plate can slide along the first cylinder clamping plate. It can be understood that the second cylinder clamping plate moves in the X direction along the first cylinder clamping plate. The other end of the second cylinder clamping plate is provided with a chute for the third cylinder clamping plate to slide. The third cylinder clamping plate can slide along the second cylinder clamping plate. It can be understood that the third cylinder clamping plate moves in the Y direction along the second cylinder clamping plate. The other end of the third cylinder clamping plate is provided with a clamping end for clamping the FPC, and the clamping end can be a vacuum suction plate or clamping plates that can approach or separate from each other. When the third cylinder clamping plate clamps the FPC, the flipping cylinder 141 drives the folding shaft 3131 to rotate, causing the clamping cylinder 3132 to flip, and the FPC also flips synchronously. At this time, the detection mechanism 32 is activated to take a photo and detect the FPC below. The detection mechanism 32 feeds back the preset position of the FPC relative to the backlight plate of the screen 6 to the control module 51 of the device. The control module 51 controls the second cylinder clamping plate to move in the X direction and the third cylinder clamping plate to move in the Y direction according to the detected offset of the FPC to compensate for the offset of the FPC. After multiple photo detections and compensated folding, the FPC is folded to the preset position of the screen 6.

[0065] Continue to refer to Figure 9 , in this embodiment, the folding mechanism 31 further includes an adjusting member 314. The adjusting member 314 is used to adjust the initial position of the screen 6 on the folding platform 312. The adjusting member 314 includes an adjusting cylinder 3141 and a pushing plate 3142. Specifically, the pushing plate 3142 is connected to the pushing end of the adjusting cylinder 3141. The pushing end of the adjusting cylinder 3141 is located at the corner of the folding platform 312. The pushing plate 3142 is provided with a right-angled notch, and the notch fits the included angle of the two sides of the screen 6. The notch of the pushing plate 3142 engages with the screen 6. When the pushing cylinder drives the pushing plate 3142 to move according to the preset pushing distance, the pushing plate 3142 pushes the screen 6 to the preset position, so that the clamping cylinder 3132 can clamp the FPC more accurately during folding.

[0066] Furthermore, refer to Figure 10, the detection mechanism 32 includes a detection bracket 321 and a detection camera 322 fixed to the detection bracket 321. A light-emitting panel 323 for irradiating the screen 6 is arranged below the detection camera 322. A detection hole 3231 for the detection camera 322 to receive light is formed in the light-emitting panel 323 directly below the detection camera 322. The detection bracket 321 is fixed to the housing 5 and supports the detection camera 322. The light-emitting panel 323 is fixed to the detection bracket 321 and located directly below the detection camera 322, so that the light incident path of the detection camera 322 passes through the detection hole 3231 on the light-emitting panel 323. The light-emitting panel 323 is used to provide a light source for the screen 6, so that the detection camera 322 can clearly capture the position of the FPC on the screen 6. The detection camera 322 is connected to the detection bracket 321 through a telescopic cylinder, so that the detection camera 322 can finely adjust its position relative to the detection bracket 321 to make the detection camera 322 located directly above the detection hole 3231. When the clip cylinder 3132 clamps the FPC and performs a reverse fold, the detection camera 322 takes the first alignment photo. After compensating the position through the detection camera 322 and completing the first photo taking, the control module 51 controls each section of the clip cylinder 3132 to adjust the offset position according to the amount by which the FPC deviates from the preset position. The clip cylinder 3132 continues to perform the reverse fold, and the detection camera 322 synchronously takes a photo again. After multiple photo takings and reverse fold adjustments, the position of the FPC is just located at the preset position, and at this time, the reverse fold process ends. The principle of the detection camera 322 for photo detection is based on the preset distance between the FPC and the corner of the screen 6. According to the photo, the horizontal distance and vertical distance between the FPC and the preset corner of the screen 6 are determined to judge whether the FPC has reached the predetermined accuracy.

[0067] Reference Figure 11, since the folding mechanism 31 simply folds the FPC and attaches it to the back position of the set screen 6, without tightly attaching it to the back of the product, the pressing mechanism 33 presses it again to tightly attach the folded FPC to the back of the screen 6 to prevent the FPC from detaching from the predetermined position after folding. The pressing mechanism 33 includes a first moving cylinder 331, a second moving cylinder 332, and a pressing plate 333. The first moving cylinder 331 is fixed to the casing 5 through a bracket. The second moving cylinder 332 is arranged at the pushing end of the first moving cylinder 331. The first moving cylinder 331 can push the second moving cylinder 332 to move horizontally. The pressing plate 333 is arranged at the pushing end of the second moving cylinder 332. The second moving cylinder 332 drives the pressing plate 333 to move up and down vertically. A pressure detection component and a pressure regulating valve are arranged in the pressing plate 333. By detecting the pressure between the pressing plate 333 and the screen 6, the pressure regulating valve is used to regulate the pressure of the second moving cylinder 332 to prevent the screen 6 from being crushed. During use, the folded screen 6 is moved under the pressing plate 333, and fine adjustment can also be performed through the first moving cylinder 331. The second moving cylinder 332 pushes the pressing plate 333 to move downward. The pressing plate 333 presses the FPC flat. After a short pressing, the second moving cylinder 332 rises to complete the pressing process.

[0068] Further, referring to Figure 3 and Figure 12 , the blanking mechanism 41 includes a blanking manipulator 411 and a blanking belt 412. The blanking manipulator 411 transfers the screen 6 to the blanking belt 412. The material distribution mechanism 42 includes a material distribution detection component 421 and a material distribution manipulator 422. The material distribution detection component 421 is arranged above the blanking belt 412 and takes pictures to detect the position of the FPC on the screen 6. The material distribution manipulator 422 discards the screen 6 with detected NG. The blanking manipulator 411 includes a blanking bracket 4111, a blanking moving module 4112, and a blanking suction component 4113. The blanking bracket 4111 includes two spaced rods to support the blanking moving module 4112. The blanking moving module 4112 includes an X-direction module that moves horizontally and a Z-direction module that moves vertically. It can be understood that it can also be a moving cylinder or the like. The blanking suction component 4113 is arranged on the Z-direction module. The Z-direction module moves along the X-direction module. Both the X-direction module and the Z-direction module are composed of a synchronous belt and a stepping motor. The blanking suction component 4113 is composed of a vacuum suction plate and a vacuum sensing component. Driven by the blanking moving module 4112, the blanking suction component 4113 reciprocates between the folding platform 312 and the blanking belt 412. The blanking suction component 4113 picks up the screen 6 by vacuum adsorption and moves it to the position of the blanking belt 412, thus completing the transfer and blanking of the screen 6. Its blanking process is roughly the same as the above loading process.

[0069] The blanking belt 412 includes an OK belt 4121 and an NG belt 4122. The NG belt 4122 is located on the side of the OK belt 4121. The blanking manipulator 411 places the folded screen 6 on the OK belt 4121. After being detected by the material sorting mechanism 42, the unqualified screens 6 are sorted onto the NG belt 4122, thus realizing material sorting. Both the OK belt 4121 and the NG belt 4122 are provided with drive motors 113, in-position optical fibers 111, and anti-overlapping optical fibers, and their functions are the same as those in the above-mentioned feeding belt 11.

[0070] The material sorting mechanism 42 includes a material sorting detector 421 and a material sorting manipulator 422. The material sorting detector 421 has the same structure as the above-mentioned detection mechanism 32. The material sorting detector 421 performs detection by taking pictures with a CCD camera. According to the preset position of the FPC from the corners of the screen 6, it judges whether the FPC folding is qualified, and thus divides the folded screen 6 into qualified products and unqualified products. The unqualified products are sorted by the material sorting manipulator 422. Specifically, the material sorting manipulator 422 has the same structure as the above-mentioned blanking manipulator 411. According to the detection result of taking pictures by the material sorting detector 421, the control module 51 controls the material sorting manipulator 422 to pick up and transfer the unqualified screens 6 to the NG belt 4122, so that the qualified screens 6 are blanked along the OK belt 4121, and the unqualified screens 6 are blanked along the NG belt 4122.

[0071] In this embodiment, referring to Figure 2 and Figure 3 Two sets of film tearing modules 2 and folding modules 3 are provided, and two second feeding modules 1 are also provided. The two film tearing modules 2 are respectively located on both sides of the feeding belt 11. The first feeding manipulator 12 feeds the screens 6 onto the film tearing platforms 21 on both sides respectively for film tearing, folding, taking pictures for detection, and pressure holding, improving the efficiency of the equipment. The blanking manipulator 411 transfers the screens 6 after pressure holding on both sides to the OK belt 4121 respectively. After detection, the material sorting manipulator 422 performs material sorting. Two NG belts 4122 are also provided and are respectively located on both sides of the OK belt 4121, improving the efficiency of material sorting.

[0072] The present invention also provides a bending method, using the above-mentioned FPC bending machine, including the following steps:

[0073] The feeding module 1 transfers the screen 6 to the film tearing platform 21;

[0074] The film tearing mechanism 22 moves to the film tearing platform 21 and tears the film of the screen 6;

[0075] The feeding module 1 transfers the screen 6 after film tearing to the folding mechanism 31. The folding mechanism 31 folds the FPC of the screen 6, and at the same time, the detection mechanism 32 takes pictures of the FPC for detection. The folding mechanism 31 performs compensated folding on the FPC according to the detection results of the detection mechanism 32;

[0076] The pressure maintaining mechanism 33 presses the folded FPC to fit the screen 6;

[0077] The discharging mechanism 41 discharges the pressed screen 6, and the material sorting mechanism 42 takes pictures of the FPC of the screen 6 for detection and sorts the materials according to the detection results.

[0078] Specifically, the feeding module 1 transfers the screen 6 to the film tearing platform 21; it includes the feeding belt 11 receiving the upstream screen 6 and conveying it to the picking position of the first feeding manipulator 12. The flipping assembly 14 flips the screen 6 at the picking position so that the side with the protective film of the screen 6 faces upward. The first feeding manipulator 12 picks up the screen 6 that has been flipped from the flipping assembly 14 and transfers it to the film tearing platform 21;

[0079] The film tearing mechanism 22 moves to the film tearing platform 21 and tears the film of the screen 6; it includes the film tearing platform 21 rotating the first film tearing position 211 after loading through the rotating platform 213 so that the screen 6 is located on one side of the film tearing mechanism 22. The film tearing mechanism 22 moves the film tearing roller 223 to the upper side of the screen 6 through the first moving component 221. The film tearing cylinder 224 pushes the film tearing roller 223 to descend so that the film tearing roller 223 adheres to the protective film. Then the film tearing cylinder 224 ascends to separate the corner of the protective film from the screen 6. Then, the first moving component 221 drives the film tearing roller 223 to move so that the whole protective film is separated from the screen 6, thus completing the film tearing.

[0080] The feeding module 1 transfers the screen 6 after film tearing to the folding mechanism 31; it includes the rotating platform 213 rotating to rotate the screen 6 after film tearing from the position close to the film tearing mechanism 22 to the position close to the second feeding manipulator 13. The second feeding manipulator 13 picks up the screen 6 and transfers it to the folding platform 312.

[0081] The folding mechanism 31 folds the FPC of the screen 6, and at the same time, the detection mechanism 32 takes pictures of the FPC for detection. The folding mechanism 31 performs compensated folding on the FPC according to the detection results of the detection mechanism 32; it includes the second moving component 311 driving the folding platform 312 to move below the detection mechanism 32. The folding part 313 clamps the FPC and folds it. At the same time, the detection mechanism 32 takes pictures of the FPC for detection, judges the position of the FPC relative to the screen 6, and uploads it to the control module 51. The control module 51 controls the fine adjustment of the folding part 313 according to the analysis results to make the FPC swing towards the preset position. After multiple pictures are taken and the folding position is compensated, finally, the FPC is folded to the preset position.

[0082] The pressure-holding mechanism 33 presses the FPC after folding back to fit the screen 6; it includes that the second moving component 311 drives the folded-back screen 6 to move under the pressure-holding mechanism 33. Driven by the first moving cylinder 331 and the second moving cylinder 332, the pressing plate 333 descends and presses the FPC tightly against the back of the screen 6. Then the pressing plate 333 rises and returns to the initial position to complete the pressure-holding.

[0083] The blanking mechanism 41 blanks the screen 6 after pressing, and the material sorting mechanism 42 takes pictures and inspects the FPC of the screen 6 and sorts the materials according to the inspection results; it includes that the blanking manipulator 411 picks up the pressure-held screen 6 and moves it to the OK belt 4121 of the blanking belt 412. The screen 6 moves under the material sorting and detecting part 421. The material sorting and detecting part 421 takes pictures and inspects the completed screen 6. By the distance between the FPC and the corners of the screen 6, it is judged whether the FPC is at the preset position relative to the screen 6. The screen 6 with the FPC at the preset position is defined as a qualified product, and the screen 6 with the FPC not at the preset position is defined as an unqualified product. The material sorting and detecting part 421 uploads the inspection result to the control module 51. The control module 51 controls the material sorting manipulator 422 to pick up the screen 6 with the unqualified inspection result and transfer it to the NG belt 4122. The unqualified products are blanked by the NG belt 4122, and the qualified products continue to be blanked by the OK belt 4121.

[0084] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural transformations made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An FPC bending machine, characterized in that: include: Feeding module; The film-tearing module comprises a film-tearing platform and a film-tearing mechanism. The feeding module feeds the screen to the film-tearing platform. The film-tearing mechanism moves relative to the film-tearing platform and tears the film on the screen. The folding module includes a folding mechanism, a detection mechanism and a pressure-holding mechanism. The feeding module transfers the screen from the film-tearing platform to the folding mechanism. The folding mechanism folds the FPC of the screen. The detection mechanism takes photos in real time to detect the folding position of the FPC on the screen. The pressure-holding mechanism lifts and lowers to press the FPC of the screen. A material unloading module, comprising a material unloading mechanism and a material sorting mechanism, wherein the material unloading mechanism unloads the screens, and the material sorting mechanism photographs, detects and sorts the screens; The folding mechanism includes a second moving component, a folding platform and a folding piece, wherein the second moving component drives the folding platform to move to the bottom of the detection mechanism, the folding piece clamps the FPC of the screen and folds it back, and the folding platform absorbs the screen; the folding piece includes a flip shaft and a clamp cylinder connected to the flip shaft; The clamp cylinder includes three sections of connected cylinder clamps, one end of the first cylinder clamp is connected to the end of the flip shaft, and the other end is provided with a slide groove for the second cylinder clamp to slide along the X direction, the other end of the second cylinder clamp is provided with a slide groove for the third cylinder clamp to slide along the Y direction, and the other end of the third cylinder clamp is provided with a clamping end for clamping the FPC; It also includes a control module, a third cylinder clamping plate clamping the FPC to flip it, a detection mechanism taking multiple photos of the FPC to detect the offset of the FPC, and the control module controlling the second cylinder clamping plate to move along the X direction and the third cylinder clamping plate to move along the Y direction to compensate for the offset of the FPC multiple times.

2. The FPC bending machine according to claim 1, characterized in that: The feeding module includes a feeding belt, a first feeding robot and a second feeding robot. The feeding belt receives and transports the screen. The first feeding robot reciprocates between the feeding belt and the film tearing platform and carries the screen. The second feeding robot reciprocates between the film tearing platform and the folding mechanism and carries the screen.

3. The FPC bending machine according to claim 2, characterized in that: The feeding module also includes a flipping assembly, which is located at a feeding point of the feeding belt and is used to flip the screen so that the film tearing surface faces upward.

4. The FPC bending machine according to claim 1, characterized in that: The film tearing mechanism includes a first moving component and a film tearing bracket, the film tearing bracket is fixed to the first moving component and moves synchronously, the film tearing bracket is provided with a film tearing roller and a film tearing cylinder, the film tearing roller is used to adhere the protective film and separate it from the screen, and the film tearing cylinder is fixed to the film tearing bracket and pushes the film tearing roller to move up and down.

5. The FPC bending machine according to claim 1, characterized in that: The film tearing platform includes a first film tearing position, a second film tearing position and a rotating platform, the first film tearing position and the second film tearing position are respectively located on both sides of the rotating platform, the rotating platform rotates to drive the first film tearing position and the second film tearing position to rotate and switch between two positions, and the first film tearing position and the second film tearing position vacuum adsorb the screen.

6. The FPC bending machine according to claim 1, characterized in that: The detection mechanism includes a detection bracket and a detection camera fixed to the detection bracket. A light-emitting panel for illuminating the screen is arranged below the detection camera. The light-emitting panel is provided with a detection hole directly below the detection camera for allowing light to enter the detection camera.

7. The FPC bending machine according to claim 1, characterized in that: The unloading mechanism includes an unloading robot and an unloading belt. The unloading robot transfers the screen to the unloading belt. The material dividing mechanism includes a material dividing detection part and a material dividing robot. The material dividing detection part is arranged above the unloading belt and takes a photo to detect the position of the FPC on the screen. The material dividing robot discards the screen that has detected NG.

8. A bending method, characterized in that: The FPC bending machine according to any one of claims 1 to 7 comprises the following steps: The loading module transfers the screen to the film tearing platform; The film-tearing mechanism moves to the film-tearing platform and tears the film from the screen; The feeding module transfers the screen after film tearing to the folding mechanism, which folds the FPC of the screen. At the same time, the detection mechanism takes a photo to detect the FPC. The folding mechanism compensates and folds the FPC according to the detection results of the detection mechanism. The pressure-maintaining mechanism presses the folded FPC to fit the screen; The unloading mechanism unloads the pressed screen, and the dividing mechanism takes photos and detects the FPC of the screen and divides the material according to the detection results.

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