Screen assembly detection mechanism, automatic detection equipment and method

Abstract

The invention discloses a screen assembly detection mechanism and automatic detection equipment and method.The screen assembly detection mechanism comprises a screen front view angle sensor, a screen containing plate, a film tearing assembly and a film pressing assembly, the screen containing plate is movably arranged in the first direction, the film tearing assembly comprises a film tearing clamping jaw, and the film pressing assembly comprises a film pressing piece; the film pressing piece is arranged above the screen placing plate and is movably arranged along a second direction; after the screen assembly placed on the screen placing plate is pressed by the film pressing piece, the film tearing clamping jaw partially uncovers the protective film of the screen assembly, the uncovered part of the screen assembly is photographed by the screen front view angle sensor, and after photographing is completed, the uncovered part of the protective film is reset under the movement of the screen placing plate. According to the invention, the film tearing clamping jaw and the film pressing piece are matched to realize rapid film uncovering, and the film pressing piece and the screen placing plate are matched to realize rapid film laminating, so that the front detection efficiency of the screen assembly is greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of screen detection technology, and in particular to a screen assembly detection mechanism, automated detection equipment and method. Background Art

[0002] During the production process of electronic devices such as mobile phones and tablets, the screen assembly of the electronic devices needs to be tested. Taking mobile phones as an example, after the screen assembly of the mobile phone is completed, the front and back of the screen assembly need to be tested. In order to protect the screen assembly, a flexible protective film is often attached to the front of the screen assembly.

[0003] At present, the detection of the front and background of the screen assembly has been automated, but the overall detection effect is not high. The main reason is that in the front detection process, due to the presence of a protective film, at least a part of the protective film needs to be uncovered to detect the front of the screen assembly. Therefore, the current processing methods for the process of lifting the protective film (referred to as peeling off the film) and resetting the protective film (referred to as restoring the film) are relatively unsmooth, resulting in low overall detection efficiency. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a screen assembly detection mechanism, automated detection equipment and method.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present invention provides a screen assembly detection mechanism, comprising a screen front viewing angle sensor, a screen placement plate, a film tearing assembly and a film pressing assembly, wherein the screen placement plate is movably arranged along a first direction, the film tearing assembly comprises a film tearing clamp, and the film pressing assembly comprises a film pressing member, and the film pressing member is arranged above the screen placement plate and movably arranged along a second direction; after the screen assembly placed on the screen placement plate is pressed by the film pressing member, the film tearing clamp partially lifts up the protective film of the screen assembly, and the lifted portion of the screen assembly is photographed by the screen front viewing angle sensor, and after the photographing is completed, the lifted portion of the protective film is reset under the movement of the screen placement plate.

[0007] Furthermore, the film tearing jaw is rotatably arranged, and the axial direction of rotation of the film tearing jaw is parallel to the third direction, and the first direction, the second direction and the third direction are orthogonally distributed. When peeling off the film, the film pressing member is located between the film peeling end and the non-film-contacting end of the protective film, and the film tearing jaw clamps the film peeling end in the length direction of the protective film and flips it toward the non-film-contacting end in the length direction of the protective film to peel off the film; the length direction of the protective film is the same as the first direction.

[0008] Furthermore, the film tearing clamp comprises at least two clamping plates which are arranged opposite to each other and can move closer to or farther away from each other, and the length direction of the clamping plates extends along the third direction.

[0009] Furthermore, the film tearing assembly also includes a rotating arm and a rotating power member, the rotating arm is spaced apart on the side of the screen placement plate, one end of the rotating arm is rotatably connected to the rotating power member, and the other end of the rotating arm is fixedly connected to the film tearing clamp.

[0010] Furthermore, the rotating power component is movably arranged along the first direction.

[0011] Furthermore, the film pressing assembly also includes a film pressing power part and lifting arms arranged relatively on both sides of the screen placement plate, the lower ends of the lifting arms on both sides are connected to the film pressing power part, and the upper ends of the lifting arms on both sides are respectively connected to the two ends of the film pressing part.

[0012] Furthermore, an auxiliary pressure plate is provided on the surface of the film pressing member, the length direction of the auxiliary pressure plate is extended along the third direction, the auxiliary pressure plate is inclined, and the side of the auxiliary pressure plate in contact with the protective film is a horizontal plane.

[0013] Furthermore, it also includes an auxiliary light box for shooting the front of the screen, the screen front viewing angle sensor is arranged above the auxiliary light box for shooting the front of the screen, and the bottom of the auxiliary light box for shooting the front of the screen faces the area where the film peeling operation is performed.

[0014] In the second aspect, the present invention also provides an automated inspection device, including a loading component, a screen back visual sensor, a first manipulator, a second manipulator, a unloading component and the above-mentioned screen assembly inspection mechanism, wherein the first manipulator and the second manipulator are both movable along a third direction, the first manipulator grabs the screen assembly on the loading component to the screen back visual sensor for back side photo inspection and then transfers it to a screen placement plate, and the second manipulator transfers the screen assembly on the screen placement plate to the unloading component after the inspection of the screen assembly is completed.

[0015] In a third aspect, the present invention further provides a screen assembly automatic detection method of an automatic detection device, comprising:

[0016] Using a screen back visual sensor to take a photo of the back of the screen assembly grabbed by the first manipulator from the loading component;

[0017] After the visual sensor on the back of the screen takes the photo, the first robot transfers the screen assembly to the screen placement board;

[0018] The screen placement plate carries the screen assembly and moves from the starting position to the film tearing position;

[0019] The film pressing member presses the screen assembly, the protective film of the screen assembly is peeled off by the film peeling claws, and the peeled part of the screen assembly is photographed by using the front viewing angle sensor of the screen;

[0020] After taking photos of the uncovered part, the movable screen placement plate is moved from the film-tearing position to the starting position, and the film-tearing jaws are switched from a clamping state of the protective film of the screen assembly to a loose state during the movement;

[0021] The second robot grabs the screen assembly to the first product placement area and the second product placement area of ​​the blanking component according to the photographing results of the front viewing angle sensor of the screen and the back visual sensor of the screen. The first product placement area is used to place good products, and the second product placement area is used to place defective products.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: the screen assembly detection mechanism includes a screen front viewing angle sensor, a screen placement plate, a film tearing assembly and a film pressing assembly, the screen placement plate is movably arranged along a first direction, the film tearing assembly includes a film tearing clamp, and the film pressing assembly includes a film pressing member, which is arranged above the screen placement plate and movably arranged along a second direction; after the screen assembly placed on the screen placement plate is pressed by the film pressing member, the film tearing clamp partially lifts up the protective film of the screen assembly, and the screen front viewing angle sensor takes a picture of the lifted portion of the screen assembly, and after the picture is taken, the lifted portion of the protective film is reset under the movement of the screen placement plate. The present invention utilizes the cooperation of the film tearing clamp and the film pressing member to realize rapid film peeling, and utilizes the cooperation of the film pressing member and the screen placement plate to realize rapid film lamination, which greatly improves the efficiency of the front detection of the screen assembly.

[0023] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0025] Figure 1 A schematic diagram of the structure of an automated detection device provided in a specific embodiment of the present invention;

[0026] Figure 2 A schematic diagram of the structure of a screen assembly detection mechanism provided in a specific embodiment of the present invention;

[0027] Figure 3 A partial structural diagram of a screen assembly detection mechanism provided in a specific embodiment of the present invention Figure 1 ;

[0028] Figure 4 A partial structural diagram of a screen assembly detection mechanism provided in a specific embodiment of the present invention Figure 2 ;

[0029] Figure 5 A schematic diagram of the structure of a film pressing component in a screen assembly detection mechanism provided in a specific embodiment of the present invention;

[0030] Figure 6 A schematic structural diagram of a film tearing component in a screen assembly detection mechanism provided in a specific embodiment of the present invention;

[0031] Figure 7 A schematic diagram of the installation of a visual sensor on the back of a screen in an automated detection device provided in a specific embodiment of the present invention.

[0032] Reference numerals

[0033] 1. Screen assembly detection mechanism; 11. Screen front viewing angle sensor; 12. Screen placement plate; 13. Film tearing assembly; 131. Film tearing jaws; 1311. Clamping plate; 132. Clamping power piece; 133. Rotating arm; 134. Rotating power piece; 135. Mounting plate; 136. First linear module; 14. Film pressing assembly; 141. Film pressing piece; 1411. Auxiliary pressing plate; 142. Lifting arm; 143. Film pressing power piece; 15. Second linear module; 16. Screen front shooting auxiliary light box; 2. Loading assembly; 3. First manipulator; 4. Second manipulator; 5. Unloading assembly; 51. First product placement area; 52. Second product placement area; 6. Screen back visual sensor; 7. Screen back shooting auxiliary light box; 8. Third linear module; 9. Rack. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention. Obviously, the described embodiments are 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.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0040] like Figures 2 to 6 As shown, an embodiment of the present invention provides a screen assembly detection mechanism 1, which is used to detect the front of the screen assembly of an electronic device such as a mobile phone screen assembly or a tablet computer screen assembly, and specifically includes a screen front viewing angle sensor 11, a screen placement plate 12, a film tearing component 13 and a film pressing component 14. The screen placement plate 12 is movably arranged along a first direction, the film tearing component 13 includes a film tearing clamp 131, and the film pressing component 14 includes a film pressing member 141. The film pressing member 141 is arranged above the screen placement plate 12 and movably arranged along a second direction; after the screen assembly placed on the screen placement plate 12 is pressed by the film pressing member 141, the film tearing clamp 131 partially lifts up the protective film of the screen assembly, and the screen front viewing angle sensor 11 takes a picture of the lifted portion of the screen assembly. After the picture is taken, the lifted portion of the protective film is reset under the movement of the screen placement plate 12.

[0041] In this embodiment, the first direction, the second direction and the third direction are orthogonally distributed, the first direction refers to the front-to-back direction, the second direction refers to the up-down direction, and the third direction refers to the left-to-right direction.

[0042] The front view sensor 11 of the screen may be one or more, and is fixed by a bracket or other structure. The front view sensor 11 of the screen includes but is not limited to a laser scanner, a linear array and a planar array CCD camera, a TV camera, etc. These devices are standard parts that can be purchased on the market, and will not be described one by one here.

[0043] The screen placement plate 12 is movably arranged along the first direction, and is mounted on the second linear module 15 arranged along the first direction, and moves along the first direction under the control of the second linear module 15. The second linear module 15 includes a linear guide rail and a servo motor, and the screen placement plate 12 is mounted on the linear guide rail and driven by the servo motor. The slider of the linear guide rail is tightly fixed to the bottom of the screen placement plate 12 to ensure a smooth and low-friction movement process.

[0044] The film pressing member 141 is arranged above the screen placement plate 12 and is movably arranged along the second direction, so that the film pressing member 141 can approach or move away from the screen placement plate 12. In the film peeling environment, the film pressing member 141 moves in the direction close to the screen placement plate 12, and the screen assembly is clamped between the film pressing member 141 and the screen placement plate 12 to prevent it from displacement. The film tearing jaws 131 can peel off part of the protective film of the screen assembly. After the photo is taken, the screen assembly moves to the starting position with the screen placement plate 12 (in this process, the film tearing jaws 131 have switched from the state of clamping the protective film to the state of releasing the protective film), which will guide the peeling part of the protective film to be smoothly reset.

[0045] It should be noted that in the film peeling environment, the degree to which the film pressing member 141 presses the screen assembly is not particularly tight. This is because in actual operation, if the film pressing member 141 presses the screen assembly too tightly, on the one hand, it may cause damage to the screen assembly itself, and on the other hand, it is difficult to apply the film by moving the screen placement plate 12.

[0046] In one embodiment, in order to improve the reliability of the film peeling and laminating process, a plurality of vacuum adsorption holes are provided in the area where the screen placement plate 12 contacts the back of the screen assembly. During the film peeling and laminating process, the vacuum adsorption holes are used to adsorb the screen assembly to prevent it from displacement.

[0047] The film peeling jaws 131 and the film pressing member 141 cooperate to realize fast film peeling, and the film pressing member 141 and the screen placement plate 12 cooperate to realize fast film lamination, which greatly improves the efficiency of the front detection of the screen assembly.

[0048] In one embodiment, the film-tearing jaw 131 is rotatably arranged, and the axial direction of rotation of the film-tearing jaw 131 is parallel to the third direction. When peeling off the film, the film pressing member 141 is located between the film-tearing end and the non-film-contacting end of the protective film. The film-tearing jaw 131 clamps the film-tearing end in the length direction of the protective film and flips it toward the non-film-contacting end in the length direction of the protective film to peel off the film; the length direction of the protective film is the same as the first direction.

[0049] The axial direction of rotation of the film tearing jaw 131 is parallel to the third direction. This layout enables the film tearing jaw 131 to flexibly rotate in a plane perpendicular to the plane of the screen placement plate 12, providing the most convenient spatial path for the film peeling action, thereby improving the efficiency and stability of film tearing.

[0050] The film-tearing jaw 131 clamps the film-peeling end of the protective film in the length direction and flips it toward the non-peeling end of the protective film in the length direction to peel off the film (the film-peeling end of the protective film is at the rear, and the non-peeling end is at the front, that is, the film is peeled off from the rear to the front). The length direction of the protective film is the same as the first direction, which means that when peeling off the film, the flipping direction of the film-peeling jaw 131 is consistent with the moving direction of the screen placement plate 12. This is more conducive to laminating the film by moving the screen placement plate 12 from the rear to the front after peeling off the film. There is no need to design an additional laminating structure, which simplifies the structure. In addition, since the film is peeled off along the length direction of the protective film, the lateral pulling force on the protective film can be minimized to the greatest extent, reducing the risk of tearing the protective film, ensuring that each film peeling action can be carried out stably and smoothly, thereby improving the continuity and efficiency of the detection process.

[0051] It should be noted that a connecting ear extending out of the outer contour of the screen assembly is provided at the peeling end of the protective film in the length direction. When peeling the film, the film peeling jaw 131 will clamp the connecting ear to perform the peeling operation.

[0052] In one embodiment, the film tearing clamping jaw 131 includes at least two clamping plates 1311 that are arranged opposite to each other and can move closer to or farther away from each other, and the length direction of the clamping plates 1311 extends along the third direction.

[0053] like Figure 6 As shown, the two clamping plates 1311 are connected to the clamping power member 132, which can be a cylinder. The clamping power member 132 is used to control the movement of the two clamping plates 1311 to achieve the clamping or loosening action. Since the length direction of the clamping plate 1311 extends along the third direction, it is convenient to clamp the connecting ear of the protective film and peel the film from the back to the front.

[0054] In one embodiment, the film tearing assembly 13 also includes a rotating arm 133 and a rotating power member 134. The rotating arm 133 is spaced apart on the side of the screen placement plate 12. One end of the rotating arm 133 is rotatably connected to the rotating power member 134, and the other end of the rotating arm 133 is fixedly connected to the clamping power member 132 of the film tearing clamp 131.

[0055] like Figure 2 , Figure 6 As shown, the rotating arms 133 are arranged at intervals on the side of the screen placement plate 12. This position arrangement not only fully utilizes the lateral space of the device, but also facilitates the flexible operation of the film tearing clamp 131. The rotating arms 133 are arranged on the side to avoid interference with the movement path of the screen placement plate 12 and other components.

[0056] One end of the rotating arm 133 is rotatably connected to the rotating power member 134. This rotatable connection mode gives the film tearing clamp 131 the ability to flip freely in space. The rotating power member 134 can use a high-precision servo motor with a reducer. When the motor receives a control system instruction to start running, the reducer adjusts the output torque and speed to drive the rotating arm 133 to rotate smoothly with the connection point as the axis.

[0057] The other end of the rotating arm 133 is fixedly connected to the clamping power member 132 of the film-tearing clamp 131, forming a stable power transmission link. The rigid connection ensures that the power output by the rotating power member 134 can be transmitted to the film-tearing clamp 131 without loss, so that the film-tearing clamp 131 can quickly and accurately flip and peel the film according to the predetermined trajectory.

[0058] In one embodiment, the rotating power member 134 is movably disposed along the first direction.

[0059] like Figure 6 As shown, the rotating power member 134 is connected to the first linear module 136 installed in the first direction through the mounting plate 135, and the rotating power member 134 can move along the first direction under the control of the first linear module 136. The first linear module 136 includes a linear guide rail and a servo motor. The rotating power member 134 is installed on the linear guide rail through the mounting plate 135 and is driven by the servo motor to ensure a smooth movement process with low friction.

[0060] The rotating power member 134 is movably arranged along the first direction. This design ingenuity plays a vital role in the film peeling process. Its core lies in forming a movement coordination in the opposite direction with the screen placement plate 12, thereby comprehensively improving the smoothness and effect of the film peeling process.

[0061] Specifically, in the actual film peeling operation, when the screen placement plate 12 carries the screen assembly and moves backward along the first direction, the first linear module 136 drives the film peeling jaw 131 to move forward along the first direction, that is, the screen placement plate 12 and the film peeling jaw 131 operate in opposite motion postures, which can speed up the film peeling and save film peeling time.

[0062] In addition, the opposite movement posture cleverly offsets part of the inertial impact force generated by the rapid flipping of the film peeling jaws 131. When the film peeling jaws 131 clamp the connecting ears of the protective film and begin to flip, if only the film peeling jaws 131 move by themselves, the sudden force applied will easily cause the screen assembly to move or vibrate on the screen placement plate 12, threatening the detection accuracy. However, at this moment, the movement of the screen placement plate 12 in the opposite direction is just like a stable "balancing force", which effectively buffers this impact and ensures that the screen assembly remains motionless at the moment of film peeling.

[0063] In one embodiment, the film pressing assembly 14 also includes a film pressing power part 143 and lifting arms 142 arranged relatively on both sides of the screen placement plate 12, the lower ends of the lifting arms 142 on both sides are connected to the film pressing power part 143, and the upper ends of the lifting arms 142 on both sides are respectively connected to the two ends of the film pressing part 141.

[0064] like Figure 5 As shown, the film pressing power part 143 serves as the driving force source for the entire film pressing action. The common film pressing power part 143 can be a pneumatic cylinder or a servo electric cylinder. The lifting arms 142 arranged on both sides of the screen placement plate 12 can accurately transmit the vertical force generated by the film pressing power part 143 to the film pressing part 141, ensuring that the film pressing part 141 always maintains a horizontal and stable state during the lifting process. The layout of the lifting arms 142 and the film pressing part 141 greatly improves the stability and timeliness of the film pressing action. The structure of the double-sided lifting arms 142 effectively improves the force uniformity of the film pressing part 141, and will not interfere with the movement of the screen placement plate 12.

[0065] In one embodiment, an auxiliary pressure plate 1411 is provided on the surface of the film pressing member 141. The length direction of the auxiliary pressure plate 1411 extends along the third direction. The auxiliary pressure plate 1411 is inclined. The side of the auxiliary pressure plate 1411 in contact with the protective film is a horizontal plane.

[0066] like Figure 5 As shown, the film pressing member 141 is a long cylindrical roller structure, and the auxiliary pressure plate 1411 is fixed on the outer surface of the film pressing member 141. The length direction of the auxiliary pressure plate 1411 is extended along the third direction. The width direction of the screen assembly placed on the screen placement plate 12 is the same as the third direction. Therefore, the auxiliary pressure plate 1411 can completely cover the width direction of the screen assembly to ensure that a stable pressing force is provided in the width direction. In addition, the auxiliary pressure plate 1411 is made of rubber material, and the side of the auxiliary pressure plate 1411 that contacts the protective film is a horizontal surface. When the film pressing member 141 presses the screen assembly, the horizontal contact surface has a good smoothing effect on the protective film. During the film peeling process, when the film peeling claw 131 clamps the peeling end of the protective film and flips it to peel off, the horizontal surface below the auxiliary pressure plate 1411 ensures that the periphery of the peeled-off part of the protective film remains flat, and no wrinkles or deformation will occur due to the auxiliary pressure plate 1411, so that the front viewing angle sensor 11 of the screen can clearly capture the image of the peeled-off part, thereby improving the detection accuracy. Similarly, after the photo is taken, the screen placement plate 12 drives the screen assembly to reset, and the auxiliary pressure plate 1411 guides the peeled-off part of the protective film to be smoothly re-attached. The flat contact surface ensures that the laminating process is smooth and unobstructed, effectively reducing subsequent detection problems caused by poor lamination.

[0067] like Figure 2As shown, the screen assembly detection mechanism 1 also includes a screen front shooting auxiliary light box 16, and the screen front shooting auxiliary light box 11 is arranged above the screen front shooting auxiliary light box 16, and the bottom of the screen front shooting auxiliary light box 16 faces the film peeling operation area. With such a design, in the actual detection scenario, when it is necessary to take a photo of the part of the screen assembly where the protective film is peeled off, the screen front viewing angle sensor 11 is located above and can capture the image at the best viewing angle. The screen front shooting auxiliary light box 16 below provides it with ideal lighting conditions, so that light is evenly emitted from the bottom of the light box toward the film peeling operation area.

[0068] like Figures 1 to 7 As shown, an embodiment of the present invention provides an automated detection device, including a frame 9, a loading component 2, a screen back visual sensor 6, a first manipulator 3, a second manipulator 4, a unloading component 5 and the above-mentioned screen assembly detection mechanism 1, the first manipulator 3 and the second manipulator 4 are both movably arranged along a third direction, the first manipulator 3 grabs the screen assembly on the loading component 2 to the screen back visual sensor 6 for back side photo detection and then transfers it to the screen placement plate 12, and the second manipulator 4 transfers it to the unloading component 5 after the screen assembly detection on the screen placement plate 12 is completed.

[0069] like Figure 1 As shown, the frame 9 serves as the installation base of each component, and a third linear module 8 arranged along the third direction is fixed on the frame 9. The first manipulator 3 and the second manipulator 4 move along the third direction under the control of the third linear module 8. The third linear module 8 includes a linear guide rail and a servo motor. The first manipulator 3 and the second manipulator 4 are installed on the slider of the linear guide rail and driven by the servo motor to ensure a smooth and low-friction movement process.

[0070] Both the loading component 2 and the unloading component 5 include a conveyor belt structure, that is, the material is fed by means of a conveyor belt, wherein the unloading component 5 has two conveyor belts with different conveying directions, one conveyor belt is arranged in the first product placement area 51, and the other conveyor belt is arranged in the second product placement area 52. The first product placement area 51 is used to place good products, and the second product placement area 52 is used to place defective products.

[0071] The first manipulator 3 and the second manipulator 4 can be rectangular coordinate manipulators, which can perform linear motion in the directions of three mutually perpendicular coordinate axes, namely, X, Y, and Z, and are provided with vacuum nozzles to absorb the screen assembly.

[0072] The screen back visual sensor 6 may be one or more, and is mounted and fixed by a bracket or other structure. The screen back visual sensor 6 includes but is not limited to a laser scanner, a linear array and a planar array CCD camera, a TV camera, etc. These devices are standard parts that can be purchased on the market, and are not described one by one here. When the first manipulator 3 grabs the screen assembly above it, the screen back visual sensor 6 takes a picture of the screen back through the screen back shooting auxiliary light box 7.

[0073] An embodiment of the present invention further provides a method for automatically detecting a screen assembly of an automated detection device, comprising the following steps: S10-S60.

[0074] S10, using the screen back visual sensor 6 to take a photo of the back side of the screen assembly grabbed by the first manipulator 3 from the loading component 2.

[0075] When the screen assemblies on the production line are transported in batches to the loading component 2, the loading component 2 quickly completes the sorting and positioning work to ensure that the first manipulator 3 can grasp them accurately.

[0076] S20, after the visual sensor 6 on the back of the screen completes taking the photo, the first manipulator 3 transfers the screen assembly to the screen placement plate 12.

[0077] After completing the back-side photography, the first manipulator 3 quickly and smoothly transfers the screen assembly to the screen placement plate 12 according to the preset motion path. As a key bearing component for subsequent front-side inspection, the screen placement plate 12 is in a standby state in advance, ready to receive the screen assembly from the first manipulator 3, ensuring that it is in the best initial position each time the screen assembly is received.

[0078] S30, the screen placement plate 12 carries the screen assembly and moves from the starting position to the film tearing position.

[0079] After receiving the screen assembly, the screen placement plate 12 is driven by a servo motor to move quickly and accurately along the first direction according to the control system instruction.

[0080] S40, the film pressing member 141 presses the screen assembly, the film tearing claws 131 partially lift up the protective film of the screen assembly, and the front screen viewing angle sensor 11 is used to take a photo of the lifted portion of the screen assembly.

[0081] When the screen placement plate 12 carrying the screen assembly reaches the film peeling position, the film pressing assembly 14 starts quickly, driving the lifting arms 142 arranged on both sides of the screen placement plate 12 to descend, thereby pressing the film pressing member 141 steadily downward. At this time, the film peeling jaws 131 start to peel off the film under the coordinated action of the rotating power member 134 and the rotating arm 133.

[0082] S50, after taking a picture of the uncovered part, the movable screen placement plate 12 is moved from the film tearing position to the starting position, and while moving, the film tearing clamping claw 131 switches from a clamping state of the protective film of the screen assembly to a loose state.

[0083] After taking photos of the uncovered film portion, the control system immediately instructs the screen placement plate 12 to move back to the starting position along the first direction. While the screen placement plate 12 moves back, the film tearing jaws 131 quickly switch from a protective film clamping state to a loose state according to the instruction, and the uncovered portion of the protective film is reattached under the movement of the screen placement plate 12.

[0084] S60, the second manipulator 4 grabs the screen assembly to the first product placement area 51 and the second product placement area 52 of the blanking component 5 according to the photographing results of the screen front viewing angle sensor 11 and the screen back visual sensor 6. The first product placement area 51 is used to place good products, and the second product placement area 52 is used to place defective products.

[0085] After receiving the sensor photo result, the second manipulator 4 starts up quickly and accurately classifies and grabs the screen assembly according to the detection result. If the screen assembly is determined to be a good product after the front and back surfaces are detected, the second manipulator 4 grabs it steadily and transfers it to the first product placement area 51 of the blanking component 5; if it is determined to be a defective product, it is transferred to the second product placement area 52.

[0086] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. Screen assembly detection mechanism, characterized in that: The invention comprises a screen front viewing angle sensor, a screen placement plate, a film tearing assembly and a film pressing assembly, wherein the screen placement plate is movably arranged along a first direction, the film tearing assembly comprises a film tearing clamp, and the film pressing assembly comprises a film pressing member, and the film pressing member is arranged above the screen placement plate and movably arranged along a second direction; after the screen assembly placed on the screen placement plate is pressed by the film pressing member, the film tearing clamp partially lifts up the protective film of the screen assembly, and the lifted portion of the screen assembly is photographed by the screen front viewing angle sensor, and after the photographing is completed, the lifted portion of the protective film is reset under the movement of the screen placement plate.

2. The screen assembly detection mechanism according to claim 1, characterized in that: The film-tearing jaw is rotatably arranged, and the axial direction of rotation of the film-tearing jaw is parallel to the third direction, and the first direction, the second direction and the third direction are orthogonally distributed. When peeling off the film, the film pressing member is located between the film-tearing end and the non-film-contacting end of the protective film, and the film-tearing jaw clamps the film-tearing end in the length direction of the protective film and flips it toward the non-film-contacting end in the length direction of the protective film to peel off the film; The length direction of the protective film is the same as the first direction.

3. The screen assembly detection mechanism according to claim 1, characterized in that: The film tearing clamp comprises at least two clamping plates which are arranged opposite to each other and can approach or move away from each other, and the length direction of the clamping plates extends along the third direction.

4. The screen assembly detection mechanism according to claim 1, characterized in that: The film tearing assembly also includes a rotating arm and a rotating power member. The rotating arm is spaced apart on the side of the screen placement plate. One end of the rotating arm is rotatably connected to the rotating power member, and the other end of the rotating arm is fixedly connected to the film tearing clamp.

5. The screen assembly detection mechanism according to claim 4, characterized in that: The rotating power member is movably arranged along a first direction.

6. The screen assembly detection mechanism according to claim 1, characterized in that: The film pressing assembly also includes a film pressing power part and lifting arms arranged relatively on both sides of the screen placement plate, the lower ends of the lifting arms on both sides are connected to the film pressing power part, and the upper ends of the lifting arms on both sides are respectively connected to the two ends of the film pressing part.

7. The screen assembly detection mechanism according to claim 1, characterized in that: An auxiliary pressure plate is disposed on the surface of the film pressing member. The length direction of the auxiliary pressure plate extends along the third direction. The auxiliary pressure plate is inclined. The side of the auxiliary pressure plate in contact with the protective film is a horizontal surface.

8. The screen assembly detection mechanism according to claim 1, characterized in that: It also includes a screen front shooting auxiliary light box, the screen front viewing angle sensor is arranged above the screen front shooting auxiliary light box, and the bottom of the screen front shooting auxiliary light box faces the film peeling operation area.

9. An automated testing device, characterized in that: It includes a loading component, a screen back visual sensor, a first manipulator, a second manipulator, a unloading component and the screen assembly detection mechanism described in any one of claims 1 to 8, the first manipulator and the second manipulator are both movably arranged along a third direction, the first manipulator grabs the screen assembly on the loading component to the screen back visual sensor for back side photo detection and then transfers it to the screen placement plate, and the second manipulator transfers the screen assembly on the screen placement plate to the unloading component after the detection of the screen assembly is completed.

10. A screen assembly automatic detection method for an automated detection device, characterized in that: include: Using a screen back visual sensor to take a photo of the back of the screen assembly grabbed by the first manipulator from the loading component; After the visual sensor on the back of the screen takes the photo, the first robot transfers the screen assembly to the screen placement board; The screen placement plate carries the screen assembly and moves from the starting position to the film tearing position; The film pressing member presses the screen assembly, the protective film of the screen assembly is peeled off by the film peeling claws, and the peeled part of the screen assembly is photographed by using the front viewing angle sensor of the screen; After taking photos of the uncovered part, the movable screen placement plate is moved from the film-tearing position to the starting position, and the film-tearing jaws are switched from a clamping state of the protective film of the screen assembly to a loose state during the movement; The second robot grabs the screen assembly to the first product placement area and the second product placement area of ​​the blanking component according to the photographing results of the front viewing angle sensor of the screen and the back visual sensor of the screen. The first product placement area is used to place good products, and the second product placement area is used to place defective products.

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