FPC bending machine and bending method

Abstract

The invention discloses an FPC (Flexible Printed Circuit) bending machine and a bending method. The FPC bending machine comprises a 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, and the film tearing mechanism moves relative to the film tearing platform and carries out film tearing on the screen; the reverse folding module comprises a reverse folding mechanism, a detection mechanism and a pressure maintaining mechanism, the feeding module transfers the screen from the film tearing platform to the reverse folding mechanism, the reverse folding mechanism reversely folds the FPC of the screen, the detection mechanism photographs and detects the reverse folding position of the FPC on the screen in real time, and the pressure maintaining mechanism lifts and presses the FPC of the screen; and the discharging module comprises a discharging mechanism and a distributing mechanism, the discharging mechanism conducts discharging on the screens, and the distributing mechanism conducts photographing detection and sorting on the screens. The problems that vision decline is easily caused and the labor efficiency is low during manual film tearing and bending are solved.

Description

Technical Field

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

[0002] Mobile phone screens are generally composed of a liquid crystal display and a backlight module. FPC is an important component that connects the liquid crystal display and the mobile phone motherboard, responsible for transmitting signals and power. During the assembly process of the mobile phone LCD module, one end of the FPC is connected to the liquid crystal display, 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] The folding process of the FPC of the mobile phone LCD module is bound to the backlight module. At present, it is a manual operation and a semi-automatic device to align and press the operation manually. In addition, the protective film on the screen module needs to be torn off before folding. The labor intensity is high, fatigue is easy, the operation is non-standard, the yield is low, rework is time-consuming, and the production capacity is low. In addition, the folding accuracy is measured by mechanical two-dimensional and other methods, with poor accuracy, which easily causes eye fatigue and decreased vision, resulting in high staff turnover. 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 problem of decreased vision and low labor efficiency caused by manual film tearing and bending.

[0005] To achieve the above object, the present invention provides an FPC bending machine, comprising: 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. The material unloading module comprises a material unloading mechanism and a material sorting mechanism. The material unloading mechanism unloads the screens, and the material sorting mechanism photographs, detects and sorts the screens.

[0006] Optionally, the loading module includes a loading belt, a first loading robot and a second loading robot. The loading belt receives and transports the screen, the first loading robot reciprocates between the loading belt and the film tearing platform and transports the screen, and the second loading robot reciprocates between the film tearing platform and the folding mechanism and transports the screen.

[0007] Optionally, the feeding module further comprises a flipping assembly, wherein the flipping assembly is located at a feeding point of the feeding belt, and the flipping assembly is used to flip the screen so that the film tearing surface faces upward.

[0008] Optionally, 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, the film tearing cylinder is fixed to the film tearing bracket and pushes the film tearing roller to move up and down.

[0009] Optionally, 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.

[0010] Optionally, the folding mechanism includes a second moving component, a folding platform and a folding piece, the second moving component drives the folding platform to move below the detection mechanism, the folding piece clamps the FPC of the screen and folds it, and the folding platform adsorbs the screen.

[0011] Optionally, the folding member includes a flip shaft and a clamp cylinder connected to the flip shaft, the flip shaft rotates, 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.

[0012] Optionally, 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, and the light-emitting panel is provided with a detection hole directly below the detection camera for allowing light to enter the detection camera.

[0013] Optionally, the unloading mechanism includes a unloading robot and a unloading belt, the unloading robot transfers the screen to the unloading belt, the material sorting mechanism includes a material sorting detection part and a material sorting robot, the material sorting detection part is arranged above the unloading belt and takes a photo to detect the position of the FPC on the screen, and the material sorting robot discards the screen that has detected NG.

[0014] A bending method, using the above-mentioned FPC bending machine, 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.

[0015] The beneficial effects of the present invention are: through automatic feeding, film tearing and folding, the FPC on the screen can be accurately folded back at a predetermined position, which improves the efficiency of FPC bending and the product qualification rate, and avoids the inefficiency and damage to the human body caused by manual operation. In the process of bending the FPC of the screen, the feeding module receives the screen and automatically positions the material, the film tearing mechanism tears the film on the screen, the feeding module transfers the torn screen to the folding mechanism, the folding mechanism folds back the FPC of the screen, the detection mechanism takes photos to detect the position of the FPC, after repeated photo detection and folding, the pressure holding mechanism presses the FPC to the screen, the unloading mechanism and the material dividing mechanism unload and divide the finished screen respectively, in the process of folding the screen FPC, the FPC bending machine is fully automated, which not only improves the folding efficiency, but also improves the qualification rate of the screen after the FPC is folded back. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the FPC bending machine of the present invention; Figure 2 It is a schematic diagram of the exploded structure of the FPC bending machine of the present invention; Figure 3 It is a schematic diagram of the top view of the FPC bending machine of the present invention; Figure 4 It is a schematic diagram of the overall structure of the feeding belt in the present invention; Figure 5 It is a schematic diagram of the overall structure of the flip assembly in the present invention; Figure 6 It is a schematic diagram of the overall structure of the first feeding robot in the present invention; Figure 7 It is a schematic diagram of the overall structure of the film tearing mechanism in the present invention; Figure 8 It is a schematic diagram of the overall structure of the film tearing platform in the present invention; Fig. 9 It is a schematic diagram of the overall structure of the folding mechanism in the present invention; Fig.10 It is a schematic diagram of the overall structure of the detection mechanism in the present invention; Fig.11 It is a schematic diagram of the overall structure of the pressure-maintaining mechanism in the present invention; Fig.12 It is a schematic diagram of the overall structure of the unloading robot in the present invention.

[0018] Description of labels: 1. Feeding module; 11. Feeding belt; 111. In-position optical fiber; 112. Calibration cylinder; 113. Driving motor; 12. First feeding manipulator; 121. Feeding bracket; 122. Feeding moving module; 123. Feeding adsorption piece; 13. Second feeding manipulator; 14. Turning assembly; 141. Turning cylinder; 142. Lifting cylinder; 143. Turning adsorption piece; 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 assembly; 222. Film tearing bracket; 223. Film tearing roller; 224. Film tearing cylinder; 225. Film tearing auxiliary wheel; 3. Reflection module; 31. Reflection mechanism; 311. Second moving component; 312. Reflection platform; 313. Reflection member; 3131. Turning axis; 3132. Clamp cylinder; 314. Adjustment member; 3141. Adjustment cylinder; 3142. Push plate; 32. Detection mechanism; 321. Detection bracket; 322. Detection camera; 323. Light-emitting panel; 3231. Detection hole; 33. Pressure-maintaining mechanism; 331. First moving cylinder; 332. Second moving cylinder; 333. Pressing plate; 4. Unloading module; 41. Unloading mechanism; 411. Unloading manipulator; 4111. Unloading bracket; 4112. Unloading moving module; 4113. Unloading adsorption piece; 412. Unloading belt; 4121. OK belt; 4122. NG belt; 42. Distributing mechanism; 421. Distributing detection piece; 422. Distributing manipulator; 5. Casing; 51. Control module; 6. Screen; The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0022] One embodiment of the present invention provides an FPC bending machine, referring to Figures 1 to 12 ,include: The feeding module 1; the film tearing module 2 includes a film tearing platform 21 and a film tearing mechanism 22, the feeding module 1 feeds the screen 6 to the film tearing platform 21, the film tearing mechanism 22 moves relative to the film tearing platform 21 and tears the film of the screen 6; the folding module 3 includes a folding mechanism 31, a detection mechanism 32 and a pressure holding mechanism 33, the feeding module 1 transfers the screen 6 from the film tearing platform 21 to the folding mechanism 31, the folding mechanism 31 folds the FPC of the screen 6, the detection mechanism 32 takes a photo in real time to detect the folding position of the FPC on the screen 6, and the pressure holding mechanism 33 lifts and presses the FPC of the screen 6; the unloading module 4 includes a unloading mechanism 41 and a dividing mechanism 42, the unloading mechanism 41 unloads the screen 6, and the dividing mechanism 42 takes a photo to detect and sort the screen 6.

[0023] refer to Figures 1 to 3This embodiment enables the FPC on the screen 6 to be accurately folded back at a predetermined position through automatic feeding, film tearing and folding, thereby improving the efficiency of FPC bending and the product qualification rate, and avoiding the inefficiency and damage to the human body caused by manual operation. During the FPC bending process of the screen 6, the feeding module 1 receives the screen 6 and automatically positions the material, the film tearing mechanism 22 tears the film on the screen 6, the feeding module 1 transfers the torn screen 6 to the folding mechanism 31, the folding mechanism 31 folds back the FPC of the screen 6, and the detection mechanism 32 takes photos to detect the position of the FPC. After repeated photo detection and folding, the pressure holding mechanism 33 presses the FPC to fit the screen 6, and the unloading mechanism 41 and the material separation mechanism 42 unload and separate the completed screen 6 respectively. During the folding process of the screen 6 FPC, the FPC bending machine is fully automated, which not only improves the folding efficiency, but also improves the qualification rate of the screen 6 after the FPC is folded back. Specifically, the loading module 1 receives the screen 6 conveyed from the upstream, and the loading module 1 loads each screen 6 to be folded to a fixed position of 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 off the protective film on the screen 6 for the subsequent folding mechanism 31 to fold the FPC, and the unloading module 4 unloads and sorts the folded screen 6, so that the entire film tearing and folding process does not require manual participation, reduces labor loss, and greatly improves the folding accuracy.

[0024] In this embodiment, the FPC bending machine also includes a housing 5, a feeding module 1, a film tearing module 2, a folding module 3 and a feeding module 4 are all arranged in the housing 5, the housing 5 is provided with a control module 51, the control module 51 is used to control the operation of each module in the FPC bending machine, and a control panel for the operator to operate is provided on the outside of the housing 5, and the operation status of each module can be controlled and detected in real time through the control panel. It should be noted that the film tearing platform 21 adopts a vacuum adsorption method. The film tearing platform 21 is provided with a plurality of vacuum adsorption holes and vacuum sensors. When the feeding module 1 transfers the screen 6 to 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, so that the vacuum adsorption holes adsorb the screen 6, and the screen 6 is fixed to the film tearing platform 21. Specifically, the vacuum sensing element is electrically connected to the control module 51. When the vacuum sensing element detects that vacuum adsorption is achieved between the screen 6 and the film-tearing platform 21, the vacuum sensing element sends an electrical signal to the control module 51, so that the control module 51 can determine whether the film-tearing platform 21 has fixedly adsorbed the screen 6. When the screen 6 accidentally detaches from the film-tearing platform 21 during the film-tearing process, the vacuum sensing element senses that the vacuum adsorption state of the vacuum adsorption hole disappears and sends an electrical signal to the control module 51. The control module 51 determines that the screen 6 is accidentally detached and sends a signal to remind the operator. It can be understood that the feeding module 1 also adopts the vacuum adsorption method in the process of transferring to the film-tearing platform 21, and its vacuum adsorption effect is the same as the effect of the film-tearing platform 21 adsorbing the screen 6.

[0025] Further, refer to Figures 3 to 6The feeding module 1 includes a feeding belt 11, a first feeding robot 12 and a second feeding robot 13. The feeding belt 11 receives and conveys the screen 6. The first feeding robot 12 reciprocates between the feeding belt 11 and the film-tearing platform 21 and carries the screen 6. The second feeding robot 13 reciprocates between the film-tearing platform 21 and the folding mechanism 31 and carries the screen 6. The feeding belt 11 is used to receive the screen 6 transferred by the upstream equipment and convey it. The first feeding robot 12 reciprocates between the feeding belt 11 and the film-tearing platform 21. The first feeding robot 12 feeds the screen 6 from the feeding end of the feeding belt 11 to the film-tearing platform 21. The second feeding robot 13 can reciprocate between the film-tearing platform 21 and the folding mechanism 31. The second feeding robot 13 is used to transfer the screen 6 after film-tearing from the film-tearing platform 21 to the folding mechanism 31 to fold the FPC. It can be understood that the first loading robot 12 and the second loading robot 13 reciprocate through the moving path predetermined by the control module 51 to transfer the screen 6. Of course, positioning detection parts can also be set on the first loading robot 12 and the second loading robot 13. Each time the screen 6 is transferred, the position of the screen 6 is photographed, so that the position error of the screen 6 can be compensated, making the loading of the screen 6 more accurate.

[0026] refer to Figure 4In this embodiment, the feeding belt 11 includes a feeding end and a picking end. The feeding end is used to receive the screen 6 transferred by the upstream equipment, and the picking end is for the first feeding manipulator 12 to pick up the screen 6. The picking end is provided with an in-place optical fiber 111 and a correction cylinder 112 for detecting the screen 6. The in-place optical fiber 111 is arranged horizontally at the end of the picking end, and at the same time prevents the screen 6 from accidentally sliding off the feeding belt 11. The in-place optical fiber 111 and the correction cylinder 112 cooperate to push the screen 6 to the picking position of the first feeding manipulator 12. Specifically, the in-place optical fiber 111 can judge whether the screen 6 is in place through photoelectric sensing to control the feeding 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 feeding belt 11 continue the next movement. The correction 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 longitudinally. The Y-direction cylinder is arranged on the side of the feeding belt 11, and the X-direction cylinder is arranged at the end of the feeding belt 11 and is located on the same side as the optical fiber 111 in place. During the process of conveying the screen 6 along the feeding belt 11, the screen 6 is pushed by the X-direction cylinder and the Y-direction cylinder so that the screen 6 is located at the picking point of the first feeding manipulator 12, so that the first feeding manipulator 12 can accurately pick up the screen 6. It can be understood that the feeding belt 11 also includes a driving motor 113, which drives the entire feeding belt 11 to move through a pulley, so that the screen 6 can move from the feeding end to the picking end. The feed 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 feed end, the anti-overlapping optical fiber detects the screen 6 and sends a signal. The upstream manipulator cannot continue to place the screen 6 at the feed end at this time. When the screen 6 moves with the feeding belt 11 and leaves the feed end, the signal of the anti-overlapping optical fiber is released, and the upstream manipulator can continue to place the screen 6 at the feed end, thereby preventing multiple screens 6 from overlapping at the feed end.

[0027] refer to Figure 6The first loading robot 12 includes a loading bracket 121, a loading moving module 122 and a loading adsorption member 123. The loading bracket 121 is two support rods arranged at intervals. One end of the loading bracket 121 is fixed to the housing 5, and the other end of the loading bracket 121 is connected and used to support the loading moving module 122. The loading moving module 122 includes a Y-axis module and a Z-axis module. In this embodiment, the X-axis represents the horizontal direction, the Y-axis represents the longitudinal direction, and the Z-axis represents the vertical direction. The Y-axis module is fixed to the loading bracket 121 and extends in the longitudinal direction. The Z-axis module is arranged on the Y-axis module and extends in the vertical direction, and the Z-axis module can slide along the Y-axis module. The loading adsorption member 123 is arranged on the Z-axis module and moves vertically along the Z-axis module. Specifically, the Z-axis module and the Y-axis module are both composed of a synchronous belt, a servo motor and a screw rod, so that they have a fast running speed and good stability. The loading adsorbent 123 is provided with a vacuum suction cup and a scanning piece. The scanning piece can scan and identify the screen 6. The vacuum suction cup is adsorbed with the screen 6 by vacuum adsorption to achieve the purpose of picking up the screen 6. In the process of transferring the screen 6, the Y-axis module is started, and the Z-axis module slides along the screw of the Y-axis module to drive the loading adsorbent 123 to move to the top of the loading point of the loading belt 11. After the scanning piece identifies the screen 6, the Z-axis module is started, and the loading adsorbent 123 descends along the screw of the Z-axis module, so that the vacuum suction cup contacts the screen 6 and starts vacuuming. After the screen 6 is adsorbed, the loading adsorbent 123 rises, and the Z-axis module moves along the screw of the Y-axis module to the top of the film tearing platform 21. The loading adsorbent 123 descends again to place the screen 6 on the film tearing platform 21. The loading adsorbent 123 is also provided with the same vacuum sensing mechanism as the above-mentioned film tearing platform 21 to determine whether the screen 6 accidentally falls off during the transfer process.

[0028] The second loading robot 13 has the same structure as the first loading robot 12, except that the Y-axis module in the first loading robot 12 is replaced by an X-axis module, so that the loading adsorption part 123 can be moved 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.

[0029] Further, refer to Figure 5, the feeding module 1 also includes a flipping assembly 14, the flipping assembly 14 is located at the feeding point of the feeding belt 11, and the flipping assembly 14 is used to flip the screen 6 to the film tearing surface facing upward. The flipping assembly 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 feeding robot 12. In this embodiment, the flipping assembly 14 includes a lifting cylinder 142, a flipping cylinder 141 and a flipping adsorbent 143. The lifting cylinder 142 is fixed on the bracket of the housing 5, and 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 started. One side of the flipping cylinder 141 is connected to the lifting cylinder 142, and the other side can rotate 180 degrees in a circumferential direction. The flipping adsorbent 143 is fixedly connected to the side of the flipping cylinder 141 that can rotate, so that the flipping adsorbent 143 can rotate from the direction facing the lower side to the direction facing the upper side. The flipping adsorbent 143 is used to adsorb the screen 6, and the flipping adsorbent 143 also adopts a vacuum adsorption method. Specifically, when the screen 6 moves to the material picking position of the first feeding robot 12, the flipping cylinder 141 drives the flipping adsorbent 143 to descend to the position of the screen 6, so that the flipping adsorbent 143 starts to vacuum adsorb the screen 6, and at the same time, the vacuum sensing element on the flipping adsorbent 143 senses whether the screen 6 is adsorbed. When the screen 6 is adsorbed, the flipping cylinder 141 is started to drive the flipping adsorbent 143 to flip 180 degrees, so that the film to be torn side of the screen 6 faces upward, so as to facilitate the subsequent first feeding robot 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 the flipping adsorbent 143 is provided with a detection element for judging whether the film to be torn side of the screen 6 faces upward. When the screen 6 is initially facing upward, the flipping component 14 is not started. When it is judged that the film to be torn side of the screen 6 faces downward, the flipping component 14 is started.

[0030] Further, refer 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 adhere 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-axis module and a first Y-axis module. The first X-axis module and the first Y-axis module have the same structure and function as the above-mentioned X-axis module and Y-axis module. Specifically, the film-tearing bracket 222 is arranged on the first Y-axis module, and the first Y-axis module is arranged on the first X-axis module, so that the first Y-axis module can move laterally along the first X-axis module, and the film-tearing bracket 222 can move longitudinally along the first Y-axis module to adjust the positions of the film-tearing roller 223 and the film-tearing cylinder 224.

[0031] The film tearing cylinder 224 is arranged on the film tearing bracket 222, and 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 vertically up and down, and the upper side of the film tearing roller 223 is also provided with a tape conveying wheel for conveying tape. When the film tearing platform 21 receives the screen 6, the film tearing bracket 222 moves along the first X-axis module and the first Y-axis module, and the film tearing cylinder 224 pushes the film tearing roller 223 to drop to the film tearing position so that the film tearing roller 223 sticks 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 upward to retract, so that the protective film is tilted upward and separated from the screen 6, and then driven by the first moving component 221, the film tearing roller 223 tears the protective film off the screen 6. The film-tearing mechanism 22 also includes a film-tearing auxiliary wheel 225 fixed to the film-tearing bracket 222. The film-tearing auxiliary wheel 225 is located on one side of the film-tearing roller 223 to prevent the tape from being too low and hitting 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, which senses the pressure between the screen 6 and the film-tearing roller 223 bracket, and then adjusts the pressure of the film-tearing cylinder 224 to prevent the screen 6 from being crushed.

[0032] Further, refer 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 increase the efficiency of film tearing, 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, and the rotating platform 213 is provided 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 between each other's positions. Preferably, each time the rotating platform 213 rotates, the first film tearing position 211 and the second film tearing position 212 rotate 180 degrees, so that when the screen 6 on the first film tearing position 211 is being torn, the second film tearing position 212 can be loaded at the same time, thereby improving efficiency. The first film tearing position 211 and the second film tearing position 212 are both provided with vacuum suction cups, and their specific structures have been recorded above. The first film tearing position 211 and the second film tearing position 212 are both provided with X-direction pushing cylinders and Y-direction pushing cylinders to push the screen 6 to the preset position of the film tearing point.

[0033] Further, refer to Fig. 9The folding mechanism 31 includes a second moving component 311, a folding platform 312 and a folding piece 313. The second moving component 311 drives the folding platform 312 to move to the bottom of the detection mechanism 32. The folding piece 313 clamps the FPC of the screen 6 and folds it back. The folding platform 312 absorbs the screen 6. The folding mechanism 31 is used to fold the FPC of the screen 6 back to the backlight panel of the screen 6, so as to facilitate connection with the external main board and save space. In this embodiment, the second moving component 311 includes a second X-axis module and a second Y-axis module. The second X-axis module and the second Y-axis module have the same structure and function as the first X-axis module and the first Y-axis module mentioned above. The second X-axis module and the second Y-axis module are both composed of a synchronous belt, a servo motor and a screw rod. Specifically, the inflection platform 312 and the inflection member 313 are arranged on the second Y-axis module, and the second Y-axis module is arranged on the second X-axis module, so that the second Y-axis module can move laterally along the second X-axis module, and the inflection platform 312 and the inflection member 313 can move longitudinally along the first Y-axis module.

[0034] The folding platform 312 fixes the torn screen 6 by vacuum adsorption. The structure and function of the folding platform 312 are the same as those of the above-mentioned film-tearing platform 21, and will not be described in detail here. The second loading robot 13 can transfer the screen 6 from the film-tearing 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 camera detection of the detection mechanism 32, the folding member 313 folds the FPC of the screen 6 to the side of the backlight panel of the screen 6, so that it can be folded while being detected to improve the qualified rate of the product.

[0035] Furthermore, the folding member 313 includes a flip shaft 3131 and a clamp cylinder 3132 connected to the flip shaft 3131. When the flip shaft 3131 rotates, the clamp cylinder 3132 clamps the FPC and folds synchronously, and the clamp cylinder 3132 moves the folding position of the FPC in the horizontal and vertical directions. In this embodiment, the flip shaft 3131 is driven to rotate by the flip cylinder 141, and the flip cylinder 141 can drive the flip shaft 3131 to rotate at least 180 degrees, so that the rack cylinder connected to the flip shaft 3131 is flipped at least 180 degrees.

[0036] The clamp cylinder 3132 is located on the side of the folding platform 312 so that the clamp cylinder 3132 can clamp the FPC and fold it. Specifically, the clamp cylinder 3132 includes three connected cylinder clamps. One end of the first cylinder clamp is connected to the end of the flip axis 3131, and the other end is provided with a slide groove for the second cylinder clamp to slide. The second cylinder clamp can slide along the first cylinder clamp, which can be understood as the second cylinder clamp moves along the X direction of the first cylinder clamp. The other end of the second cylinder clamp is provided with a slide groove for the third cylinder clamp to slide. The third cylinder clamp can slide along the second cylinder clamp, which can be understood as the third cylinder clamp moves along the Y direction of the second cylinder clamp. The other end of the third cylinder clamp is provided with a clamping end for clamping the FPC, and the clamping end can be a vacuum suction plate or a clamp that can approach or move away from each other. When the third cylinder clamp clamps the FPC, the flip cylinder 141 drives the flip shaft 3131 to rotate, causing the clamp cylinder 3132 to flip, and the FPC also flips synchronously. At this time, the detection mechanism 32 starts and takes a photo to detect the FPC below. The detection mechanism 32 feeds back the preset position of the FPC relative to the backlight panel of the screen 6 to the control module 51 of the device. The control module 51 controls the second cylinder clamp to move along the X direction and the third cylinder clamp to move along the Y direction according to the detection offset of the FPC to compensate for the offset of the FPC. After multiple photo detections and compensatory folding, the FPC is folded back to the preset position of the screen 6.

[0037] Continue to refer Fig. 9 In the present embodiment, the folding mechanism 31 further includes an adjusting member 314, which 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, and 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-angle notch, which matches the angles on both sides of the screen 6. The notch of the pushing plate 3142 is engaged with the screen 6. When the pushing cylinder drives the pushing plate 3142 to move according to a preset pushing distance, the pushing plate 3142 pushes the screen 6 to a preset position, so that the clamp cylinder 3132 can clamp the FPC more accurately during folding.

[0038] Further, refer to Fig.10The 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. The light-emitting panel 323 is provided with a detection hole 3231 for light entry of the detection camera 322 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 is located directly below the detection camera 322, so that the light entry 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 to 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 fine-tune its position relative to the detection bracket 321, so that the detection camera 322 is located directly above the detection hole 3231. When the clamp cylinder 3132 clamps the FPC and folds back, the detection camera 322 takes the first alignment photo, and the position is compensated by the detection camera 322. After the first photo is completed, the control module 51 controls the various sections of the clamp cylinder 3132 to adjust the offset position according to the amount of the FPC offset from the preset position, and the clamp cylinder 3132 continues to fold back. The detection camera 322 takes photos again synchronously. After multiple photos and folding adjustments, the position of the FPC is just located at the preset position, and the folding process ends at this time. The principle of the photo detection of the detection camera 322 is to use the preset distance between the FPC and the corner of the screen 6 as a basis, and determine the horizontal distance and vertical distance of the FPC from the preset corner of the screen 6 according to the photo, and judge whether the FPC has reached the predetermined accuracy.

[0039] refer to Fig.11Since the folding mechanism 31 simply folds the FPC back and attaches it to the set position on the back of the screen 6, and does not stick to the back of the product, the pressure-maintaining mechanism 33 presses again to make the folded FPC stick closely to the back of the screen 6, so as to prevent the FPC from leaving the predetermined position after folding. The pressure-maintaining mechanism 33 includes a first movable cylinder 331, a second movable cylinder 332 and a pressing plate 333. The first movable cylinder 331 is fixed to the housing 5 through a bracket, and the second movable cylinder 332 is arranged at the pushing end of the first movable cylinder 331. The first movable cylinder 331 can push the second movable cylinder 332 to move in the horizontal direction. The pressing plate 333 is arranged at the pushing end of the second movable cylinder 332, and the second movable cylinder 332 drives the pressing plate 333 to move 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 adjusts the pressure of the second movable cylinder 332 to prevent the screen 6 from being crushed. When in use, the folded screen 6 is moved to the bottom of the pressure plate 333, and can also be fine-tuned by the first movable cylinder 331. The second movable cylinder 332 pushes the pressure plate 333 downward, and the pressure plate 333 presses the FPC downward. After a short period of pressure maintenance, the second movable cylinder 332 rises upward to complete the pressure maintenance process.

[0040] Further, refer to Figure 3 and Fig.12 The unloading mechanism 41 includes an unloading robot 411 and an unloading belt 412. The unloading robot 411 transfers the screen 6 to the unloading belt 412. The material separation mechanism 42 includes a material separation detection component 421 and a material separation robot 422. The material separation detection component 421 is arranged above the unloading belt 412 and takes a photo to detect the position of the FPC on the screen 6. The material separation robot 422 discards the screen 6 that is detected as NG. The unloading robot 411 includes an unloading bracket 4111, an unloading moving module 4112 and an unloading adsorption component 4113. The unloading bracket 4111 includes two spaced support rods to support the unloading moving module 4112. The unloading moving module 4112 includes an X-axis module for horizontal movement and a Z-axis module for vertical movement. It can be understood that it can also be a moving cylinder, etc. The material unloading adsorption part 4113 is arranged on the Z-axis module, and the Z-axis module moves along the X-axis module. Both the X-axis module and the Z-axis module are composed of a synchronous belt and a stepper motor. The material unloading adsorption part 4113 is composed of a vacuum suction plate and a vacuum sensor. Driven by the material unloading moving module 4112, the material unloading adsorption part 4113 reciprocates between the inflection platform 312 and the material unloading belt 412. The material unloading adsorption part 4113 picks up the screen 6 by vacuum adsorption and moves to the position of the material unloading belt 412, thereby completing the transfer unloading of the screen 6. The unloading process is roughly the same as the above-mentioned loading process.

[0041] The unloading 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 unloading manipulator 411 places the folded screen 6 on the OK belt 4121. After being detected by the material separation mechanism 42, the unqualified screen 6 is separated to the NG belt 4122, thereby achieving material separation. The OK belt 4121 and the NG belt 4122 are both provided with a driving motor 113, an in-position optical fiber 111 and an anti-stack optical fiber, and their functions are the same as those in the above-mentioned loading belt 11.

[0042] The material separation mechanism 42 includes a material separation detection member 421 and a material separation manipulator 422. The material separation detection member 421 has the same structure as the above-mentioned detection mechanism 32. The material separation detection member 421 uses a CCD camera to take pictures and detect, and judges whether the FPC is folded back to be qualified according to the preset position of the FPC from the edge of the screen 6, so as to divide the screen 6 after the folding into qualified products and unqualified products. The unqualified products are separated by the material separation manipulator 422. Specifically, the material separation manipulator 422 has the same structure as the above-mentioned unloading manipulator 411. According to the photo detection result of the material separation detection member 421, the control module 51 controls the material separation manipulator 422 to pick up the unqualified screen 6 and transfer it to the NG belt 4122, so that the qualified screen 6 is unloaded along the OK belt 4121, and the unqualified screen 6 is unloaded along the NG belt 4122.

[0043] In this embodiment, reference Figure 2 and Figure 3 There are two sets of film tearing modules 2 and folding modules 3, and two second feeding modules 1. The two film tearing modules 2 are located on both sides of the feeding belt 11. The first feeding robot 12 loads the screen 6 to the film tearing platform 21 on both sides to perform film tearing, folding, photo detection, and pressure maintenance, thereby improving the efficiency of the equipment. The unloading robot 411 transfers the screen 6 after pressure maintenance on both sides to the OK belt 4121, and the material separation robot 422 separates the materials after detection. There are also two NG belts 4122, which are located on both sides of the OK belt 4121, thereby improving the efficiency of material separation.

[0044] The present invention also provides a bending method, using the above-mentioned FPC bending machine, comprising the following steps: The loading module 1 transfers the screen 6 to the film-tearing platform 21; The film-tearing mechanism 22 moves to the film-tearing platform 21 and tears the film on the screen 6; The feeding module 1 transfers the screen 6 after the film is torn off to the folding mechanism 31, and the folding mechanism 31 folds the FPC of the screen 6. At the same time, the detection mechanism 32 takes a photo to detect the FPC. The folding mechanism 31 compensates and folds the FPC according to the detection result of the detection mechanism 32. The pressure-maintaining mechanism 33 presses the folded FPC to fit the screen 6; The unloading mechanism 41 unloads the pressed screen 6 , and the dividing mechanism 42 takes a photo to detect the FPC of the screen 6 and divides the materials according to the detection result.

[0045] Specifically, the feeding module 1 transfers the screen 6 to the film-tearing platform 21; the feeding belt 11 receives the upstream screen 6 and conveys it to the picking position of the first feeding robot 12, the flipping component 14 flips the screen 6 at the picking position so that the protective film side of the screen 6 faces upward, and the first feeding robot 12 picks up the flipped screen 6 from the flipping component 14 and transfers it to the film-tearing platform 21; The film tearing mechanism 22 moves to the film tearing platform 21 and tears the film on the screen 6; the film tearing platform 21 rotates 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, and 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, and the film tearing cylinder 224 pushes the film tearing roller 223 down, so that the film tearing roller 223 adheres to the protective film, and then the film tearing cylinder 224 rises to separate the corners of the protective film from the screen 6, and then drives the film tearing roller 223 to move through the first moving component 221, so that the protective film is separated from the screen 6 as a whole, thereby completing the film tearing.

[0046] The loading module 1 transfers the screen 6 after film tearing to the folding mechanism 31; including the rotation of the rotating platform 213, rotating the screen 6 after film tearing from a position close to the film tearing mechanism 22 to a position close to the second loading robot 13, and the second loading robot 13 picks up the screen 6 and transfers it to the folding platform 312.

[0047] The folding mechanism 31 folds the FPC of the screen 6, and the detection mechanism 32 takes photos and detects the FPC. The folding mechanism 31 compensates and folds the FPC according to the detection result of the detection mechanism 32. The folding mechanism 31 comprises a second moving component 311 that drives the folding platform 312 to move to the bottom of the detection mechanism 32, and the folding piece 313 clamps the FPC and folds it. At the same time, the detection mechanism 32 takes photos and detects the FPC to determine the position of the FPC relative to the screen 6 and uploads it to the control module 51. The control module 51 controls the folding piece 313 to fine-tune according to the analysis result, so that the FPC swings to the preset position. After multiple photos and folding position compensation, the FPC is finally folded to the preset position.

[0048] The pressure-holding mechanism 33 presses the folded FPC to fit the screen 6; the second moving component 311 drives the folded screen 6 to move to the bottom of the pressure-holding mechanism 33, and driven by the first moving cylinder 331 and the second moving cylinder 332, the pressure plate 333 descends and presses the FPC tightly against the back of the screen 6, and then the pressure plate 333 rises and returns to the initial position to complete the pressure holding.

[0049] The unloading mechanism 41 unloads the pressed screen 6, and the dividing mechanism 42 takes photos and detects the FPC of the screen 6 and divides the materials according to the detection results; the unloading robot 411 picks up the screen 6 after pressure maintenance and moves it to the OK belt 4121 of the unloading belt 412, and the screen 6 moves to the bottom of the dividing detection part 421. The dividing detection part 421 takes photos and detects the completed screen 6, and judges whether the FPC is in the preset position relative to the screen 6 by the distance between the FPC and the corner of the screen 6. The screen 6 with the FPC in the preset position is defined as a qualified product, and the screen 6 with the FPC not in the preset position is defined as an unqualified product. The dividing detection part 421 uploads the detection result to the control module 51, and the control module 51 controls the dividing robot 422 to pick up the screen 6 with an unqualified detection result and transfer it to the NG belt 4122. The unqualified products are unloaded by the NG belt 4122, and the qualified products continue to be unloaded by the OK belt 4121.

[0050] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, 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. The material unloading module comprises a material unloading mechanism and a material sorting mechanism. The material unloading mechanism unloads the screens, and the material sorting mechanism photographs, detects and sorts the screens.

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 folding mechanism includes a second moving component, a folding platform and a folding piece. The second moving component drives the folding platform to move below the detection mechanism. The folding piece clamps the FPC of the screen and folds it back. The folding platform absorbs the screen.

7. The FPC bending machine according to claim 6, characterized in that: The folding member includes a turning shaft and a clamp cylinder connected to the turning shaft. When the turning shaft rotates, the clamp cylinder clamps the FPC to fold synchronously, and the clamp cylinder moves the folding position of the FPC in the horizontal and vertical directions.

8. 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.

9. 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.

10. A bending method, characterized in that: The FPC bending machine according to any one of claims 1 to 9 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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