Display screen automatic assembly device

Abstract

The application discloses a display screen automatic assembling device, which comprises a first clamp and an assembling mechanism, two workpieces in a display screen are arranged on the first clamp, one of the workpieces is grabbed and turned over by the assembling mechanism, and then the workpiece is placed in the other workpiece, so that automatic assembling of the display screen is realized, and the problem that existing display screen assembling equipment needs manual auxiliary turning over and has low efficiency is solved.

Description

Technical Field

[0001] This invention relates to the field of display screen assembly, and in particular to an automatic display screen assembly device. Background Technology

[0002] With the development of the automotive industry, in-vehicle displays are becoming increasingly common and their functions are becoming more diversified, integrating driver assistance and entertainment features. In-vehicle displays are devices installed in automobiles, manufactured using dedicated power supplies, control cards, and unit boards, that display text, images, animations, and videos through the illumination of a dot matrix. In-vehicle displays are typically LCD screens mounted on the dashboard, and they often include external speakers, SD card readability, USB connectivity, and Bluetooth functionality.

[0003] The in-vehicle display mainly includes a screen module for interaction, which includes a protective housing and a display module set in the housing. Existing display assembly lines require manual handling to flip the display module after it has been glued and assemble it into the housing, resulting in low assembly efficiency. Summary of the Invention

[0004] The main objective of this invention is to provide an automated display screen assembly device, which aims to solve the problem of low assembly efficiency in display screen assembly lines.

[0005] To achieve the above objectives, the present invention proposes an automatic display screen assembly device for assembling a second workpiece and a first workpiece, comprising:

[0006] The first fixture includes a first mounting bracket for mounting the first workpiece and a second mounting bracket for mounting the second workpiece.

[0007] The assembly mechanism includes a second robotic arm, a flipping mechanism disposed at the free end of the second robotic arm, and a second clamp disposed on the flipping mechanism;

[0008] The second clamp is used to grip the first workpiece, the flipping mechanism is used to flip the second clamp, and the second manipulator is used to assemble the first workpiece on the second clamp onto the second workpiece.

[0009] In some embodiments, the first clamp includes:

[0010] tray;

[0011] The first mounting bracket includes a bracket disposed on the tray and a tray disposed on the upper end of the bracket, the tray being used to mount the first workpiece;

[0012] The second mounting bracket includes a plurality of support columns and a plurality of limiting columns disposed on the tray and located on one side of the first mounting bracket. The support columns are used to support the second workpiece, and the limiting columns are disposed around the outer periphery of the second workpiece.

[0013] In some embodiments, the automated assembly apparatus further includes:

[0014] The second positioning mechanism is used to lock the first gripper that passes under the second robotic arm;

[0015] A first lifting mechanism is used to lift the tray away from the conveying assembly;

[0016] A second lifting mechanism is used to lift the second workpiece and the second mounting bracket away from the tray.

[0017] In some embodiments, the automated assembly apparatus further includes:

[0018] The second vision positioning module is used to position the first workpiece and / or the second workpiece.

[0019] In some embodiments, the automated assembly apparatus further includes:

[0020] A compensation mechanism, connecting the first lifting mechanism and the second lifting mechanism, is used to adjust the posture of the second workpiece to compensate for the docking error between the second workpiece and the first workpiece.

[0021] In some embodiments, the conveying mechanism further includes:

[0022] A dispensing mechanism includes a first robotic arm and a first vision positioning module and a dispensing nozzle disposed on the first robotic arm; the dispensing mechanism is used to dispense adhesive onto the second workpiece and / or the first workpiece.

[0023] The conveying mechanism includes a conveying assembly for conveying the first fixture through the dispensing mechanism and the assembly mechanism.

[0024] In some embodiments, the conveying mechanism further includes a lifting component for driving the conveying component to move up and down;

[0025] The automatic assembly device for the display screen also includes a limiting mechanism disposed above the conveying component and located corresponding to the dispensing mechanism. The limiting mechanism is used to fix the first clamp that rises with the conveying component.

[0026] In some embodiments, the limiting mechanism includes a first limiting component and a second limiting component distributed on both sides of the conveying component;

[0027] The first limiting component and the second limiting component are used to clamp and / or support the tray when the first clamp rises between the first limiting component and the second limiting component along with the lifting component.

[0028] In some embodiments, the automatic display assembly device further includes a first positioning mechanism corresponding to the dispensing mechanism, the first positioning mechanism comprising:

[0029] The first sensor is fixedly mounted on the conveying mechanism and is used to detect the position of the tray;

[0030] The first locking component includes a first drive member fixedly mounted on the conveying mechanism, and a first stop member driven by the first drive member for docking with the tray.

[0031] In some embodiments, the conveying mechanism includes a plurality of conveying components, which are connected end to end in sequence to form a circular line.

[0032] This invention provides a display screen assembly device that includes a first clamp and an assembly mechanism. Two workpieces in the display screen can be placed on the first clamp, and one workpiece can be picked up and flipped by the assembly mechanism and then placed in the other workpiece. This achieves automatic assembly of the display screen and solves the problem of low efficiency caused by the need for manual assistance in flipping existing display screen assembly equipment. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of an embodiment of the automatic display screen assembly device of the present invention;

[0034] Figure 2 for Figure 1 A schematic diagram of the dispensing mechanism and the conveying mechanism in the embodiment;

[0035] Figure 3 for Figure 1 A schematic diagram of the structure of the first clamp in the embodiment;

[0036] Figure 4 for Figure 3 A schematic diagram of the first clamp from another perspective in the embodiment;

[0037] Figure 5 for Figure 1 A schematic diagram of the conveying mechanism in the embodiment;

[0038] Figure 6 for Figure 1 A schematic diagram of the structure of the second robotic arm, the flipping mechanism, and the conveying assembly in the embodiment;

[0039] Figure 7 for Figure 6A schematic diagram of the structure of the second robotic arm, the flipping mechanism, and the second clamp in the embodiment;

[0040] Figure 8 for Figure 6 A schematic diagram of the structure of the second clamp in the embodiment;

[0041] Figure 9 for Figure 6 A schematic diagram of the structure of the first lifting mechanism, the second lifting mechanism, and the compensation mechanism in the embodiment;

[0042] Figure 10 This is a schematic diagram of the assembly structure of the first workpiece and the second workpiece in one embodiment of the present invention;

[0043] Figure 11 for Figure 1 A schematic diagram of the connection structure between the conveyor line and the return line in the embodiment;

[0044] Figure 12 for Figure 11 A schematic diagram of the steering transmission component in the embodiment. Detailed Implementation

[0045] The solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture, as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.

[0047] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0048] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0049] The present invention also proposes an automatic display screen assembly device for assembling a second workpiece and a first workpiece, as shown in the reference. Figures 1 to 12 The automatic assembly device for the display screen includes:

[0050] The first fixture 20 includes a first mounting bracket 21 for mounting the first workpiece 11 and a second mounting bracket 22 for mounting the second workpiece 12.

[0051] Assembly mechanism 70 is used to assemble the first workpiece 11 and the second workpiece 12; the assembly mechanism 70 includes a second robot arm 71 disposed on one side of the dispensing mechanism, a flipping mechanism 72 disposed on the free end of the second robot arm 71, and a second clamp 77 disposed on the flipping mechanism 72, the second clamp 77 being used to grip the first workpiece 11.

[0052] In this embodiment, the assembly mechanism 70 includes a second robotic arm 71, a flipping mechanism 72, and a second clamping fixture 77. The second clamping fixture 77 is used to grip the pallet 21b and the first workpiece 11 on the first clamping fixture 20; the flipping mechanism 72 is connected to the second clamping fixture 77 and is used to flip the pallet 21b and the first workpiece 11 vertically; the second robotic arm 71 is connected to the flipping mechanism 72 and is used to load the flipped first workpiece 11 into the second workpiece 12.

[0053] Specifically, the second robotic arm 71 can be either a three-axis orthogonal robotic arm or a rotary arm with multiple joints, and it is positioned on one side of the transfer assembly 41. (See reference...) Figure 8 The flipping mechanism 72 includes a mounting base 72a disposed at the free end of the second robot arm 71, a rotating shaft 72b rotatably disposed with the mounting base 72a, and a flipping motor 72d disposed on one side of the mounting base 72a. The flipping motor 72d is connected to the rotating shaft 72b to drive the rotating shaft 72b to rotate.

[0054] The second clamp 77 is mounted on the rotating shaft 72b to rotate with the shaft 72b. The second clamp 77 includes a mounting plate fixedly mounted on the rotating shaft 72b and a suction cup mounted on the mounting plate. The suction cup is connected to a negative pressure generator to pick up the first workpiece 11. A fifth sensor 72e for detecting the rotation angle of the rotating shaft 72b is also provided on the mounting base 72a. The two sensors are arranged vertically opposite each other. A probe for docking with the two sensors is provided at one end of the rotating shaft 72b. In this embodiment, the second clamp 77 has two extreme positions. One extreme position is when the suction end of the suction cup is facing upwards. In this position, the second clamp 77 can pick up the first workpiece 11 from below and clamp the support plate 21b between the first workpiece 11 and the mounting plate. Subsequently, the second robotic arm 71 removes the first workpiece 11 and the pallet 21b from the bracket 21a, and after being flipped by the flipping mechanism 72, the clamp is in the second extreme position, with the first workpiece 11 located below the second clamp 77. At this time, the second robotic arm 71 connects the first workpiece 11 and the second workpiece 12. The pallet 21b is released from the second clamp 77 along with the first workpiece 11, and then presses on the first workpiece 11 to provide the pressure required for the glue to bond the first workpiece 11 and the second workpiece 12.

[0055] It is worth noting that, in order to prevent the pallet 21b from shaking during flipping and transfer after being detached from the bracket 21a, an electromagnet 72c can be installed on the mounting base 72a to attract the pallet 21b. After the first workpiece 11 and the second workpiece 12 are docked, the electromagnet 72c is de-energized to release the lock on the pallet 21b.

[0056] In this embodiment, the workpieces include a first workpiece 11 and a second workpiece 12. The first workpiece 11 is specifically a display module, and the second workpiece is a housing for accommodating the display module. The first fixture 20 includes a first mounting bracket 21 for mounting the first workpiece 11 and a second mounting bracket 22 for mounting the second workpiece 12. The first workpiece 11 includes a panel 11b and a display module 11a. The display module 11a is disposed on one side of the panel 11b, and the second workpiece 12 has an opening on one side, with a mounting cavity 12a inside. The display module 11a is disposed within the mounting cavity 12a, and the panel 11b is disposed within a recess 12b at the opening.

[0057] The present invention provides a display screen assembly device that includes a first clamp 20 and an assembly mechanism 70. Two workpieces in the display screen can be placed on the first clamp 20, and one workpiece can be picked up and flipped by the assembly mechanism 70 and then placed in the other workpiece. This realizes the automatic assembly of the display screen and solves the problem of low efficiency caused by the need for manual assistance in flipping existing display screen assembly equipment.

[0058] In some embodiments, a first mounting bracket 21 and a second mounting bracket 22 are spaced apart on a tray 23. The first mounting bracket 21 includes a support 21a disposed on the tray 23 and a tray 21b disposed at the upper end of the support 21a. The tray 21b is used to mount the first workpiece 11, and a limiting protrusion 21c is provided on the upper part of the tray 21b surrounding the outer periphery of the first workpiece 11. The second mounting bracket 22 includes a plurality of support columns 22a and a plurality of limiting columns 22b disposed on the tray 23 and located on one side of the first mounting bracket 21. The support columns 22a are used to support the second workpiece 12, and the limiting columns 22b are disposed around the outer periphery of the second workpiece 12. The shape of the tray 21b is consistent with the shape of the panel 11b. The limiting protrusions 21c surround and position the first workpiece 11. One end of the second workpiece 12 is raised; the support column 22a may only support the non-raised portion or may fit against the lower surface of the raised portion. The limiting columns 22b are used to restrict the horizontal sliding of the second workpiece 12.

[0059] In some embodiments, refer to Figures 1 to 12 The automatic assembly device further includes:

[0060] The second positioning mechanism 76 is used to lock the first clamp 20 passing under the second robotic arm 71;

[0061] A first lifting mechanism 73 is used to lift the tray 23 away from the conveying assembly 41;

[0062] The second lifting mechanism 75 is used to lift the second workpiece 12 and the second mounting bracket 22 away from the tray 23;

[0063] In this embodiment, the structure of the second positioning mechanism 76 is the same as that of the first positioning mechanism, mainly including two locking components and a sensor to clamp the two sides of the limiting protrusion 21c to lock the tray 23. (Refer to...) Figure 6 and Figure 9 For details, please refer to the structural description of the second positioning mechanism in the following text.

[0064] The first lifting mechanism 73 includes a fixed plate 73a fixedly mounted below the mounting frame 41a, a first lifting cylinder 74b mounted on the fixed plate 73a, a receiving plate 73c mounted at the end of the push rod of the first lifting cylinder 74b, and a push column 73d mounted on the receiving plate 73c. ​​An opening corresponding to the push column 73d is also provided at the bottom of the tray 23. The second positioning mechanism 76 is used for initial positioning of the tray 23. After the tray 23 is locked by the second positioning mechanism 76, the tray 23 still has a certain amount of room to move. Subsequently, the first lifting cylinder 74b drives the push column 73d to rise and engage with the tray 23, causing the tray 23 to rise. At this time, the tray 23 is completely locked, and the first workpiece 11 and the second workpiece 12 are also locked accordingly, so as to facilitate subsequent assembly processes and improve assembly accuracy.

[0065] In some embodiments, the automatic assembly device further includes a second vision positioning module and a compensation mechanism, wherein the second vision positioning module is used to position the first workpiece 11 and / or the second workpiece 12; the second vision positioning module includes a first module 81 and a second module 82 disposed above the conveying assembly 41 and located on one side of the second robot arm 71. After the first clamp is fully locked, one end of the second workpiece 12 is located in the center of the image captured by the first module 81, and the other end of the second workpiece 12 is located in the center of the image captured by the second module 81. The two modules achieve accurate positioning of the second workpiece 12.

[0066] Specifically, the second visual positioning module also includes a third module 83 and a fourth module 84 located on one side of the conveying component 41 and below the second robotic arm 71. After the first workpiece 11 is removed, it is flipped by the flipping mechanism 72 and moved to the detection station on the second robotic arm 71. The third module 83 and the fourth module 84 are set at the detection station. At this time, one end of the first workpiece 11 is located in the center of the image captured by the third module 83, and the other end of the first workpiece 11 is located in the center of the image captured by the fourth module 84. The two modules achieve accurate positioning of the first workpiece 11. When the second visual positioning module detects a certain position and angle deviation between the first workpiece 11 and the second workpiece 12, the second robotic arm 71 can adjust the position and posture of the first workpiece 11 accordingly to compensate for the deviation. At the same time, by setting the second visual positioning module, the positioning accuracy of the first workpiece 11 and the second workpiece 12 can be further improved.

[0067] In some embodiments, the automatic assembly device further includes a compensation mechanism 74, which connects the first lifting mechanism 73 and the second lifting mechanism 75, for adjusting the posture of the second workpiece 12 to compensate for the docking error between the second workpiece 12 and the first workpiece 11. When the second robot 71 is a three-axis orthogonal robot, it is impossible to adjust the angle of the first workpiece 11. Therefore, the aforementioned compensation mechanism 74 is needed to fine-tune the position and angle of the second workpiece 12 to compensate for the deviation when the two are docked. The compensation mechanism 74 is disposed on the receiving plate 73c and includes a movement compensation component for the XY axes and an angle compensation component for rotation around the Z axis. The second lifting mechanism 75 is disposed at the movable end of the compensation mechanism 74. Here, the second lifting mechanism 75 is preferably a guide cylinder. The cylinder body of the guide cylinder is disposed at the movable end of the compensation mechanism 74, and the push rod of the guide cylinder is provided with a docking block 75b. Correspondingly, a docking groove 23c is also provided at the bottom of the tray 23. Only after the second workpiece 12 and the second mounting bracket 22 are detached from the tray 23 can the compensation mechanism 74 make fine adjustments to the second workpiece 12 to ensure that the two workpieces are tightly connected.

[0068] In some embodiments, the automatic display assembly apparatus further includes a dispensing mechanism 30 and a conveying mechanism. The dispensing mechanism 30 includes a first robotic arm 31 and a first vision positioning module 32 and a dispensing nozzle 35 disposed on the first robotic arm 31; the dispensing mechanism 30 is used to dispense adhesive onto the second workpiece and / or the first workpiece; the conveying mechanism includes a conveying assembly 41 for conveying the first fixture 20 through the dispensing mechanism 30 and the assembly mechanism 70.

[0069] In this embodiment, the conveying mechanism comprises multiple independently driveable conveying components 41 connected end-to-end in sequence. Specifically, the conveying components 41 adopt standard conveying modules and include a mounting frame 41a, synchronous pulleys disposed at the four corners of the mounting frame 41a, and a set of synchronous belts 41b arranged side-by-side in the mounting frame 41a. Each synchronous belt 41b connects two synchronous pulleys on the same side, and the synchronous pulleys on opposite sides are connected by a drive shaft driven by a conveying motor 41c to realize the conveying of the first clamp 20 above the synchronous belts 41b. Each conveying module is driven independently and connected end-to-end in sequence. In this embodiment, one or more dispensing mechanisms 30 are provided, and a conveying component 41 is disposed below each dispensing mechanism 30.

[0070] The first robotic arm 31 of the dispensing mechanism 30 can be a three-axis orthogonal robotic arm or a rotary arm robotic arm with multiple joints. The base of the first robotic arm 31 is set on both sides of the conveying assembly 41. The first vision positioning module 32, glue cylinder 33, dispensing valve 34, and dispensing nozzle 35 are set at the free end of the first robotic arm 31. The first vision positioning module 32 includes a camera and a light-emitting module. During vision positioning, the lens of the camera and the illumination direction of the light-emitting module are set downwards. Based on the spatial coordinates of the free end and the coordinates of the workpiece in the captured image, the actual spatial coordinates of the workpiece can be obtained. The glue cylinder 33 and the dispensing valve 34 are set on one side of the vision positioning module 32. The glue cylinder 33 is connected to an external material cylinder through a transmission pipe and a pump body. The pump body delivers the glue in the material cylinder to the glue cylinder 33. The glue cylinder 33 is also connected to the dispensing valve 34. A glue nozzle is set at the lower end of the dispensing valve 34, and a glue needle is set at the glue nozzle. The dispensing valve 34 is a back-suction type dispensing valve 34, which consists of a cylinder body, a valve body, and a dispensing body. The dispensing valve 34 body adopts a plunger structure and has a back-suction function, which solves the problems of non-continuous dispensing and stringing of medium and high viscosity media.

[0071] In this embodiment, two or more dispensing mechanisms 30 can be provided. These dispensing mechanisms 30 can be arranged side by side in a row, and the first clamp 20 is conveyed by the conveying component 41 below, allowing the first clamp 20 to flow through each dispensing mechanism 30. Alternatively, the dispensing mechanisms 30 can be arranged on both sides of the conveying component 41, staggered with each other. By providing a dispensing mechanism 30 on one side of the assembly mechanism, and simultaneously providing a conveying mechanism to sequentially convey the workpiece through the dispensing mechanism 30 and the assembly mechanism 70, automatic dispensing and automatic assembly of the workpiece can be achieved, improving the assembly efficiency of the automatic assembly device for the display screen.

[0072] In some embodiments, refer to Figures 1 to 12 The conveying mechanism also includes a lifting assembly 42 for driving the conveying assembly 41 to rise and fall. Each conveying assembly 41 has a lifting assembly 42 positioned below it. The lifting assembly 42 includes a vertical plate 42a and a slide table 42b slidably mounted on the vertical plate 42a. The conveying assembly 41 is fixedly mounted on the slide table 42b, which is connected to a nut pair on a vertically mounted lead screw. A lifting motor 42c drives the lead screw to rotate, causing the slide table 42b to rise and fall. Notably, a sensor can be installed on the conveying assembly 41 to detect the position of the first clamp 20. When the first clamp 20 reaches the set position and is detected by the sensor, the conveying assembly 41 stops rotating to allow for subsequent lifting actions. Alternatively, the image information acquired by the first visual positioning module 32 can be used to determine whether the first clamp 20 has entered the set position.

[0073] A limiting mechanism 50 is disposed above the conveying assembly 41. Since the first clamp 20 is horizontally conveyed on the conveying assembly 41, when the first clamp 20 rises with the conveying assembly 41 to the limiting mechanism 50, the limiting mechanism 50 fixes the first clamp 20 for subsequent glue application. Simultaneously, the conveying assembly 41 is driven downwards by the lifting assembly 42 and separates from the first clamp 20. Subsequently, the conveying assembly 41 docks with an adjacent conveying assembly 41 to convey other first clamps 20, preventing obstruction of the flow and glue application of other workpieces during glue application, thus improving work efficiency. In this embodiment, the limiting mechanism 50 can optionally consist of cylinders respectively disposed on both sides of the conveying assembly 41, with the cylinder push rods extending outwards to clamp the first clamp 20 for fixation. Alternatively, a single-end clamping method can be used, with a cylinder installed on one side near the conveying component 41. The cylinder's push rod extends out and docks with the first clamp 20. The push rod is provided with a docking structure that docks with the first clamp 20. Specifically, a pneumatic gripper can be installed on the push rod to clamp the first clamp 20, or a groove can be provided on the first clamp 20 to dock with the pneumatic gripper to improve docking accuracy.

[0074] By setting up a dispensing mechanism 30, this invention can dispense glue onto workpieces conveyed by the conveying component 41 to the dispensing mechanism 30. At the same time, combined with the fixed lifting component 42 and the limiting mechanism 50, the first clamp 20 and the workpiece can be lifted and fixed in the space above the conveying component 41. Other workpieces and other first clamps 20 then flow from below the fixed first clamps 20 to other dispensing mechanisms 30, avoiding the accumulation of workpieces and first clamps 20, and enabling a continuous supply of workpieces to each dispensing mechanism 30, thereby improving the dispensing efficiency of the dispensing machine.

[0075] To ensure a secure connection between the workpiece and the limiting mechanism 50 and the tray 23, two cylinders can be used to clamp the tray 23, preventing one end of the tray 23 from being suspended in the air. Specifically, the limiting mechanism 50 includes a first limiting component 51 and a second limiting component 52 distributed on both sides of the conveying assembly 41; the first limiting component 51 includes a first cylinder and a first limiting member 51a disposed on the push rod of the first cylinder; the second limiting component 52 includes a second cylinder and a second limiting member 52a disposed on the push rod of the second cylinder; when the first clamp 20 rises between the first limiting component 51 and the second limiting component 52, the push rods of the first and second cylinders respectively extend to clamp and / or support the tray 23. The tray 23 can be clamped by two limiting members, or it can be supported by two limiting members.

[0076] In some embodiments, refer to Figures 1 to 12When the pallet 23 deviates significantly from its position during transport, or when the limiting component only supports the pallet 23, the pallet 23 and the workpiece cannot be locked. Therefore, a specific structural design is needed for the two connecting components and the connecting portion of the pallet 23 to ensure complete locking. Specifically, a first connecting component 24 can be provided at the end of the pallet 23 near the first limiting component 51. A connecting groove is constructed between the first connecting component 24 and the pallet 23. The first limiting component 51a is inserted into the connecting groove to limit the vertical displacement of the pallet 23. Alternatively, a second connecting component 25 can be provided at the end of the pallet 23 near the second limiting component 52. The second connecting component 25 has a connecting hole, and the second limiting component 52a has a pin that matches the connecting hole. When the pin is inserted into the connecting hole, the pallet 23 is completely locked.

[0077] In some embodiments, refer to Figures 1 to 12 To ensure the accuracy of visual positioning, the workpiece and the first clamp 20 should be located directly below the first visual positioning module 32 to reduce positioning errors caused by lens distortion. Therefore, before lifting the first clamp 20 and the workpiece, the first clamp 20 needs to stay in the area set by the conveying component 41. Two limiting components can be set here to position the tray 23.

[0078] Specifically, the automatic display assembly device further includes a first positioning mechanism, which includes a first sensor 61 and a first locking component 62. The first sensor 61 is fixedly mounted on the conveying mechanism and is used to detect the position of the tray 23. The first locking component 62 includes a first driving member fixedly mounted on the conveying mechanism and a first stop member driven by the first driving member for docking with the tray 23. In this embodiment, the first driving member can be a cylinder or an electromagnetic lock, and the stop member is a locking tongue mounted on the push rod end of the cylinder or the electromagnetic lock. Corresponding to the first sensor 61, a proximity switch or a photoelectric switch can be selected. A blind hole for docking with the first sensor 61 and a locking hole for docking with the first stop member are provided on the lower surface of the tray 23. When the first sensor 61 senses the blind hole, the first stop member extends and docks with the locking hole to lock the tray 23.

[0079] In some embodiments, refer to Figures 1 to 12If locking is achieved solely through a single sensor and the first locking component 62, the first stop must overcome significant inertia when locking the tray 23 due to the high transmission speed, which would affect the lifespan of the first locking component 62. Therefore, in this embodiment, two locking components can be used to lock the tray 23. The locking methods of the two locking components are slightly different. Therefore, the bottom of the tray 23 needs to be modified. Specifically, a groove 23a can be provided on the bottom of the tray 23, the extension direction of which is parallel to the transmission direction of the transmission component 41, and a mating protrusion 23e is also provided in the groove 23a.

[0080] Specifically, the first positioning mechanism may include a second locking component 63 opposite to the first locking component 62. The second locking component 63 includes a second drive member fixedly mounted on the conveying component 41, and a second stop member driven by the second drive member for docking with the tray 23. (Refer to...) Figure 5 The second locking component 63 has a structure similar to a switch. The second driving member includes a mounting housing and a spring disposed within the mounting housing. One end of the second stop is hinged to the mounting housing, and the other end abuts against the spring. During the transfer of the tray 23, the second stop moves relative to the groove 23a. The hinged end of the second stop first contacts one side of the mating protrusion 23e. Subsequently, as the tray 23 continues to move, the mating protrusion 23e presses down the other end of the second stop. When the other end of the second stop moves to the other side of the mating protrusion 23e, the spring springs the second stop up, abutting against the other side of the mating protrusion 23e, thus achieving unilateral limiting. Furthermore, after the first sensor 61 detects that the tray 23 has entered the set position, the first stop located on one side of the second locking component 63 is driven by the first driving member to extend and enter the groove 23a, mating with the side of the mating protrusion 23e away from the second stop. Thus, the first and second stops can clamp the mating protrusion 23e to lock the tray 23. It is worth noting that the second locking component 63 may also be a limit switch. When the second stop is pressed down, it sends an identification signal to the PLC of the dispensing machine. At the same time, the PLC controls the conveying component 41 to brake or decelerate, so as to reduce the inertia that the first locking component 62 needs to overcome when locking the tray 23.

[0081] In some embodiments, refer to Figures 1 to 12The bottom of the tray 23 is also provided with a first detection hole 23g below the first mounting bracket 21 and a second detection hole 23f below the second mounting bracket 22. The limiting mechanism 50 also includes a third sensor and a fourth sensor fixedly mounted on the conveying assembly 41. By setting the third sensor and the fourth sensor, it is possible to detect whether there is a workpiece placed on the two mounting brackets. When the third sensor and / or the fourth sensor does not detect a workpiece, the corresponding dispensing mechanism 30 stops subsequent operations, and the PLC issues an alarm to remind the user to check.

[0082] Correspondingly, a fifth sensor and a sixth sensor are also provided below the second robotic arm 71. The fifth sensor and the sixth sensor are used to detect whether the first workpiece 11 and the second workpiece 12 are installed on the first fixture 20 flowing through the assembly mechanism.

[0083] In some embodiments, refer to Figures 1 to 12 The automatic assembly device includes the aforementioned automatic display screen assembly device. To further improve the automation level of the automatic assembly device, the conveying mechanism can be composed of multiple conveying components 41, which are connected end to end to form a circulating line. The first fixture 20 circulates on this circulating line. The circulating line includes a loading section and a unloading section. The first workpiece 11 and the second workpiece 12 are loaded onto the first fixture 20 from the loading section, and then pass through the dispensing mechanism 30 and the second robot arm 71 in sequence to complete the dispensing and assembly of the first workpiece 11 and the second workpiece 12. After assembly, the first fixture 20 flows to the unloading section for unloading.

[0084] Specifically, refer to Figure 11 The circulating production line includes a conveyor line and a return line arranged side by side, with opposite conveying directions. The second robotic arm 71 and the dispensing mechanism 30 are located on the conveyor line. A conveying assembly 41 connects the adjacent ends of the conveyor line and the return line. A deflecting conveying assembly 90, with its conveying direction perpendicular to the conveying directions of the two lines, is also provided at the ends of the conveyor line and the return line. This deflecting conveying assembly 90 is located inside the conveyor line and the return line, near their respective ends.

[0085] Specifically, the steering and conveying assembly 90 includes a base plate 91, a guide post 92 extending through the base plate 91, a first frame 93 positioned at the upper end of the guide post 92, a second frame 94 positioned at the lower end of the guide post 92, a lifting cylinder 95 connecting the base plate 91 and the first frame 93, conveyor wheels positioned at both ends of the first frame 93 and the second frame 94, a conveyor belt 96 wound around the conveyor wheels, and a motor driving the conveyor wheels to rotate. The first frame 93 is a flat plate located inside the conveyor belt 96, with a certain distance maintained between the inner surface of the upper section of the conveyor belt 96 and the upper surface of the flat plate. Thus, the conveyor belt 96 and the first frame 93 function as a support for the tray 23. The conveying direction of the first conveyor belt 96 is perpendicular to the conveying directions of the conveyor line and the return line. Normally, conveyor belt 96 is located below the synchronous belt 41b of the conveyor line and return line. When pallet 23 moves above the steering and transfer assembly 90, lifting cylinder 95 lifts conveyor belt 96 and first frame 93, causing pallet 23 to detach from the synchronous belt 41b of the conveyor line and return line. It is then redirected by conveyor belt 96 to connect with transfer assembly 41 between the conveyor line and return line, and then transferred by transfer assembly 41 to the steering and transfer assembly 90 on the other side, completing the transfer along a direction perpendicular to the conveyor line and return line. The self-circulating line enables the circulating flow of the first fixture 20, improving assembly efficiency.

[0086] The above description is only a part or preferred embodiment of the present invention. Neither the text nor the drawings should limit the scope of protection of the present invention. All equivalent structural transformations made using the content of the present invention specification and drawings under the overall concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present invention.

Claims

1. An automatic display screen assembly device for assembling a second workpiece and a first workpiece, characterized in that, include: The first fixture includes a tray, a first mounting bracket for mounting the first workpiece, and a second mounting bracket for mounting the second workpiece; the first mounting bracket includes a support disposed on the tray and a tray plate disposed on the upper end of the support, the tray plate being used to mount the first workpiece, and the tray plate being provided with a limiting protrusion surrounding the outer periphery of the first workpiece. The assembly mechanism includes a second robotic arm, a flipping mechanism disposed at the free end of the second robotic arm, and a second clamp disposed on the flipping mechanism; the flipping mechanism includes a mounting base, a rotating shaft rotatably disposed with the mounting base, and a flipping motor disposed on one side of the mounting base, the flipping motor being connected to the rotating shaft to drive the rotating shaft to rotate; an electromagnet is disposed on the mounting base for attracting the tray; The second clamp includes a mounting plate fixedly mounted on the rotating shaft and a suction cup mounted on the mounting plate. The suction end of the suction cup is positioned upwards and is used to pick up the first workpiece from below. The flipping mechanism is used to flip the second clamp, and the second manipulator is used to assemble the first workpiece on the second clamp onto the second workpiece. A dispensing mechanism for dispensing adhesive onto the second workpiece and / or the first workpiece; The conveying mechanism includes a conveying assembly for conveying the first fixture through the dispensing mechanism and the assembly mechanism; The first lifting mechanism includes a fixed plate, a first lifting cylinder disposed on the fixed plate, a receiving plate disposed at the end of the push rod of the first lifting cylinder, and a push column disposed on the receiving plate. The first lifting mechanism is used to lift the pallet away from the conveying assembly. A second lifting mechanism is used to lift the second workpiece and the second mounting bracket away from the tray; A compensation mechanism is provided, connecting the first lifting mechanism and the second lifting mechanism. The compensation mechanism is disposed on the receiving plate. The compensation mechanism includes a movement compensation component for the XY axis and an angle compensation component for rotation around the Z axis. The second lifting mechanism is disposed at the movable end of the compensation mechanism. The compensation mechanism is used to adjust the posture of the second workpiece to compensate for the docking error between the second workpiece and the first workpiece.

2. The automatic display screen assembly device according to claim 1, characterized in that, The first fixture includes: The second mounting bracket includes a plurality of support columns and a plurality of limiting columns disposed on the tray and located on one side of the first mounting bracket. The support columns are used to support the second workpiece, and the limiting columns are disposed around the outer periphery of the second workpiece.

3. The automatic display screen assembly device according to claim 2, characterized in that, The automated assembly device also includes: The second positioning mechanism is used to lock the first gripper as it passes under the second robotic arm.

4. The automatic display screen assembly device according to claim 3, characterized in that, The automated assembly device also includes: The second vision positioning module is used to position the first workpiece and / or the second workpiece.

5. The automatic display screen assembly device according to claim 1, characterized in that, The conveying mechanism further includes a lifting component for driving the conveying assembly to move up and down; The automatic assembly device for the display screen also includes a limiting mechanism disposed above the conveying component and located corresponding to the dispensing mechanism. The limiting mechanism is used to fix the first clamp that rises with the conveying component.

6. The automatic display screen assembly device according to claim 5, characterized in that, The limiting mechanism includes a first limiting component and a second limiting component distributed on both sides of the conveying component; The first limiting component and the second limiting component are used to clamp and / or support the tray when the first clamp rises between the first limiting component and the second limiting component along with the lifting component.

7. The automatic display screen assembly device according to claim 1, characterized in that, The automatic assembly device for the display screen further includes a first positioning mechanism corresponding to the dispensing mechanism, the first positioning mechanism comprising: The first sensor is fixedly mounted on the conveying mechanism and is used to detect the position of the tray; The first locking component includes a first drive member fixedly mounted on the conveying mechanism, and a first stop member driven by the first drive member for docking with the tray.

8. The automatic display screen assembly device according to claim 1, characterized in that, The conveying mechanism includes multiple conveying components, which are connected end to end in sequence to form a circular line.

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