Multi-station LED light bar assembly equipment based on industrial robot

Abstract

The present application relates to the technical field of industrial robots, in particular to a multi-station LED light bar assembling device based on an industrial robot, which comprises a mechanical arm, one side of the mechanical arm is provided with a light bar adsorption mechanism, the light bar adsorption mechanism comprises a negative pressure chamber arranged at one end of the mechanical arm and a negative pressure pump fixedly connected to one side of the mechanical arm. The device fixes the dynamic sealing mechanism of the assembly through the negative pressure maintenance assembly, the fixed frame, the first sliding patch, the second sliding patch and the slope, when the LED light bar with small adsorption width is adsorbed, the first sliding patch and the second sliding patch automatically press and fit the top surface of the through slot, accurately seal the cavity not covered by the light bar, ensure that a stable negative pressure is formed in the negative pressure chamber, and the infrared sensor of the moving distance measuring assembly detects the width of the light bar in real time, and the driving device synchronously controls the action of multiple negative pressure maintenance assemblies according to the detection data, adaptively adjusts the sealing range of the through slot, directly guarantees the continuous operation of the assembly line, and significantly improves the production efficiency.

Description

Technical Field

[0001] This invention relates to the field of industrial robot technology, and more specifically, to a multi-station LED light strip assembly equipment based on an industrial robot. Background Technology

[0002] Multi-station LED strip assembly equipment is an intelligent production system integrating automation technology, robot control, and precision machinery. It efficiently completes the entire process of LED strip assembly, including automatic feeding, assembly, welding, testing, and sorting. In this equipment, industrial robots act as transfer devices between each step, continuously moving and assembling the strips to achieve rapid and highly consistent continuous production.

[0003] Because LED strips are made of relatively fragile materials, if industrial robots use grippers to hold them, the excessive gripping force may damage the strips. Therefore, industrial robots in multi-station LED strip assembly equipment often use suction cups to pick up the strips before transferring them elsewhere. For example, in the "LED strip processing and assembly equipment" in Chinese Patent Publication No. CN118809112A, a negative pressure pump creates negative pressure in the first suction cup, which lifts the cover plate. Then, the rotating base drives the support base to rotate, positioning the first suction cup above the base. The first telescopic component then moves the cover plate downwards, engaging it with the base for rapid installation.

[0004] However, the suction cups in the aforementioned equipment are only suitable for light strips whose surfaces can cover the suction cup. For some narrower light strips, the light strip cannot completely cover the bottom surface of the suction cup. After the suction cup contacts the surface of the light strip, there is still a cavity in the suction cup that is not covered by the light strip. If the negative pressure pump is started at this time, the cavity of the suction cup is still connected to the outside. It is difficult for the suction cup to generate enough negative pressure to adsorb the light strip and complete the transfer and assembly work. As a result, when multi-station assembly equipment produces light strips of different sizes in batches, if it is producing light strips from large-sized light strips to small-sized light strips, the staff has to stop the equipment and replace the suction cups of different sizes. It is difficult to form a continuous production line system, which reduces the production efficiency of the assembly equipment and has certain limitations. Summary of the Invention

[0005] This invention provides a multi-station LED strip assembly device based on an industrial robot. It uses an infrared sensor in a moving distance measuring component to detect the width of the LED strip and drive a sliding plate in conjunction. A negative pressure maintaining component uses a stepped sliding mechanism consisting of a fixed frame, a first sliding patch, and a second sliding patch. A ramp structure allows the sliding patches to slide downwards and adhere to the top surface of the through-slot. Based on the strip size, it automatically covers any excess space between the through-slot and the strip, maintaining the airtightness of the negative pressure chamber. This achieves stable adsorption of LED strips of different widths without requiring machine downtime for suction cup replacement, thus solving the problems mentioned in the background art.

[0006] In traditional assembly equipment, when robots transfer small LED light strips, the light strips cannot completely cover the suction cups, resulting in a cavity between the suction cups and the light strips. It is difficult to create a negative pressure state in the suction cups to adsorb the light strips, which requires workers to stop the machine to replace suction cups of different sizes. This makes it difficult to form a continuous production line system and reduces the production efficiency of the assembly equipment.

[0007] To achieve the above objectives, the multi-station LED light strip assembly equipment based on an industrial robot includes a robotic arm. A light strip adsorption mechanism is provided on one side of the robotic arm. The light strip adsorption mechanism includes a negative pressure chamber located at one end of the robotic arm and a negative pressure pump fixedly connected to one side of the robotic arm. Several through slots are opened at the bottom of the negative pressure chamber. Several negative pressure maintaining components are arranged inside the negative pressure chamber. The negative pressure maintaining components are arranged in pairs, and the number of negative pressure maintaining components in each group is the same as the number of through slots. Each group of negative pressure maintaining components is symmetrically distributed at both ends of the through slots. When the negative pressure maintaining components adsorb a narrow LED light strip in the negative pressure chamber, they cover the excess cavity between the through slot and the LED light strip to maintain the stability of the negative pressure inside the negative pressure chamber.

[0008] The negative pressure maintaining assembly includes a fixed frame fixedly connected to the inside of the negative pressure chamber. A first sliding patch is slidably disposed inside the fixed frame. A second sliding patch is slidably connected inside the first sliding patch. A ramp is provided on the opposite side of the fixed frame, the first sliding patch, and the second sliding patch. When the first and second sliding patches slide, the inclination between the ramps causes the first and second sliding patches to adhere to the top surface of the through groove.

[0009] In the above technical solution, the dynamic sealing mechanism of the negative pressure maintaining component, the fixed frame, the first sliding patch, the second sliding patch and the ramp cooperate to automatically press down and adhere to the top surface of the through groove when adsorbing LED light strips with a small width, accurately sealing the cavity not covered by the light strip, and ensuring that a stable negative pressure is formed in the negative pressure chamber.

[0010] Based on this, two T-shaped grooves are formed on one side of the sliding plate, and two T-shaped sliders are fixedly connected to one end of the second sliding patch. The T-shaped sliders are slidably connected to the T-shaped grooves. Limiting grooves are formed on both sides of the inner wall of the fixed frame and the first sliding patch. Connecting components are provided on both sides of the first and second sliding patches. The connecting components are slidably disposed inside the limiting grooves. The connecting components are used to limit the sliding range of the first and second sliding patches to prevent the second sliding patch from sliding out of the first sliding patch, or the first sliding patch from sliding out of the fixed frame, thereby reducing the gap between the fixed frame, the first sliding patch, and the second sliding patch. The connecting components include fixed posts fixedly connected to both sides of the first and second sliding patches. Two staggered and symmetrically arranged rotating limiting plates are rotatably connected to the outside of the fixed posts. A torsion spring is provided between the rotating limiting plates and the fixed posts. A baffle plate is fixedly connected to the port of the limiting groove, and the distance between the two baffle plates is less than the maximum length of the two rotating limiting plates.

[0011] In the above technical solution, the rotation limit plate of the connecting component is locked inside the limit groove by the baffle under the action of the torsion spring, ensuring that the first sliding patch and the second sliding patch do not detach from each other or from the fixed frame during the movement, eliminating air leakage gaps caused by the displacement of the sliding patches, and ensuring the long-lasting sealing of the negative pressure chamber under high-speed operation.

[0012] In another technical solution, the negative pressure chamber is further equipped with two symmetrically distributed moving ranging components. These components detect the width of the LED strip, calculate the cavity length between the through-slot and the LED strip based on its actual width, and drive several negative pressure maintaining components to cover cavities of different lengths according to the calculated data. Each moving ranging component includes a drive device fixedly connected to one side of the negative pressure chamber. The output end of the drive device penetrates one side of the negative pressure chamber and is connected to a control gear. Two centrally symmetrical sliding racks mesh with the upper and lower sides of the control gear. The interiors of the through-slots are all... The sliding connection has two symmetrically distributed sliding plates. The sliding rack is fixedly connected to one of the sliding plates. Connecting strips are fixedly connected to the top of several sliding plates on the same side. Auxiliary clamping plates are fixedly connected to the bottom of several sliding plates on the same side. After the negative pressure maintaining component closes the cavity, the two auxiliary clamping plates are respectively attached to both sides of the LED light strip. Infrared sensors are provided on opposite sides of the two auxiliary clamping plates. The two infrared sensors are used to measure the distance between the LED light strip and the auxiliary clamping plates in real time. This distance is used as the length of the cavity between the through slot and the LED light strip. The infrared sensors are electrically connected to the driving device.

[0013] In this technical solution, the infrared sensor of the moving ranging component detects the width of the light strip in real time. The drive device synchronously controls the action of multiple sets of negative pressure maintaining components based on the detection data, and adaptively adjusts the closed range of the through slot. When the size of the light strip is changed, there is no need to manually stop the machine to replace the suction cup, which directly ensures the continuous operation of the production line and significantly improves production efficiency. In addition, the auxiliary clamping plate synchronously attaches to both sides of the light strip after the cavity is closed, forming a mechanical-pneumatic cooperative fixation with the negative pressure adsorption. This can effectively avoid the risk of clamping damage caused by the fragile material of the light strip, and further prevent the LED light strip from falling off or shifting.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. In this multi-station LED strip assembly equipment based on industrial robots, the dynamic sealing mechanism of the negative pressure maintaining component, along with the fixed frame, the first sliding plate, the second sliding plate, and the ramp, works together to automatically press down and adhere to the top surface of the through slot when adsorbing LED strips with a small width. This precisely seals the cavity not covered by the LED strip, ensuring a stable negative pressure inside the negative pressure chamber. Furthermore, the infrared sensor of the moving distance measuring component detects the width of the LED strip in real time, and the drive device synchronously controls the action of multiple sets of negative pressure maintaining components based on the detection data, adaptively adjusting the sealing range of the through slot. When the LED strip size is changed, there is no need for manual shutdown to replace the suction cups, directly ensuring continuous operation of the production line and significantly improving production efficiency.

[0016] 2. In this multi-station LED light strip assembly equipment based on industrial robots, the rotation limit plate of the connecting component is locked inside the limit groove by the baffle under the action of the torsion spring, ensuring that the first sliding piece and the second sliding piece do not detach from each other or from the fixed frame during the movement, eliminating air leakage gaps caused by the displacement of the sliding pieces, and ensuring the long-term sealing of the negative pressure chamber under high-speed operation.

[0017] 3. In this multi-station LED light strip assembly equipment based on industrial robots, the auxiliary clamping plate is synchronously attached to both sides of the LED light strip after the cavity is closed, forming a mechanical-pneumatic cooperative fixation with the negative pressure adsorption. This can effectively avoid the risk of clamping damage caused by the fragile material of the LED light strip, and further prevent the LED light strip from falling off or shifting. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the overall structure of the light strip adsorption mechanism in this invention;

[0020] Figure 3 This is a schematic diagram of the disassembled structure of the negative pressure chamber in this invention;

[0021] Figure 4This is a cross-sectional view of the negative pressure chamber in this invention;

[0022] Figure 5 This is a schematic diagram showing the disassembled structure of some parts of the present invention;

[0023] Figure 6 This is a three-dimensional structural diagram of the negative pressure maintaining component and the sliding plate after disassembly in this invention;

[0024] Figure 7 This is a schematic diagram of the overall structure of the fixed frame, the first sliding patch, and the second sliding patch after they are fully extended in this invention.

[0025] Figure 8 This is a side cross-sectional view of the fixed frame and the first sliding patch after they have been extended in this invention.

[0026] Figure 9 This is a side cross-sectional view of the connecting component in this invention;

[0027] Figure 10 This is a schematic diagram showing the folded state of the connecting component of the present invention before and after connecting with the limiting slide groove.

[0028] The meanings of the labels in the diagram are as follows:

[0029] 1. Robotic arm;

[0030] 2. LED strip adsorption mechanism; 21. Negative pressure chamber; 211. Through groove;

[0031] 22. Negative pressure pump;

[0032] 23. Moving ranging component; 231. Auxiliary clamping plate; 2311. Infrared sensor; 232. Sliding rack; 233. Control gear; 234. Drive device;

[0033] 24. Sliding plate; 241. T-shaped groove;

[0034] 25. Connecting strip;

[0035] 26. Negative pressure maintaining component; 261. Fixing frame; 262. No. 1 sliding patch; 263. No. 2 sliding patch; 264. T-shaped slider; 265. Limiting groove; 266. Baffle; 267. Ramp;

[0036] 27. Connecting component; 271. Fixing post; 272. Rotation limit plate; 273. Torsion spring. Detailed Implementation

[0037] The technical solutions of 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 some embodiments of the present invention, and not all embodiments. 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.

[0038] Currently, in traditional assembly equipment, when robots transfer small LED light strips, the light strips cannot completely cover the suction cups, resulting in cavities between the suction cups and the light strips. This makes it difficult to create a negative pressure state within the suction cups to adhere the light strips, forcing operators to stop the machine to replace suction cups of different sizes. This hinders the formation of a continuous production line system and reduces the production efficiency of the assembly equipment. This invention provides a multi-station LED light strip assembly device based on industrial robots. See [link to related documentation]. Figure 1 - Figure 3 As shown, the device includes a robotic arm 1, with a light strip adsorption mechanism 2 at one end. The light strip adsorption mechanism 2 includes a negative pressure chamber 21 at one end of the robotic arm 1 and a negative pressure pump 22 fixedly connected to one side of the robotic arm 1. The top plate of the negative pressure chamber 21 is detachable. The negative pressure pump 22 is connected to the negative pressure chamber 21. Several through slots 211 are opened through the bottom of the negative pressure chamber 21. When adsorbing LED light strips, the bottom surface of the negative pressure chamber 21 is brought into contact with the LED light strip by the swing of the robotic arm 1, so that the surface of the LED light strip covers the through slots 211. Then, the negative pressure pump 22 is started to draw the air out of the negative pressure chamber 21, so that a negative pressure is formed inside the negative pressure chamber 21, thereby adsorbing the LED light strip. Then, the LED light strip is transferred to other assembly equipment by the swing of the robotic arm 1 again.

[0039] When producing small-sized light strips, where the surface of the light strip cannot completely cover the through groove 211, see [reference needed]. Figure 5 , Figure 6 and Figure 7 As shown, the negative pressure chamber 21 is provided with a number of negative pressure maintaining components 26. Every two negative pressure maintaining components 26 form a group. The number and position of each group of negative pressure maintaining components 26 correspond one-to-one with the number and position of several through slots 211. Each group of negative pressure maintaining components 26 is symmetrically distributed at both ends of the through slots 211. The negative pressure maintaining component 26 includes a fixed frame 261 fixedly connected inside the negative pressure chamber 21. A first sliding patch 262 is slidably arranged inside the fixed frame 261. A second sliding patch 263 is slidably connected inside the first sliding patch 262. A ramp 267 is provided on the side of the fixed frame 261, the first sliding patch 262 and the second sliding patch 263 that are close to each other.

[0040] When small LED strips need to be attracted, two symmetrical sliding patches 263 located in the same through slot 211 move closer together. As the second sliding patch 263 slides, the ramp 267 causes it to tilt downwards, gradually adhering to the top surface of the through slot 211 and sealing it, thus enclosing the cavity between the through slot 211 and the LED strip. If the second sliding patch 263 still cannot completely seal the cavity, it continues to slide, causing the first sliding patch 262 to slide synchronously. Similarly, the first sliding patch 262 will also seal the cavity as it slides, thereby achieving the effect of attracting even smaller LED strips.

[0041] In order to enable sliding patch 262 to slide together with sliding patch 262 when sliding patch 263 moves to its maximum distance independently, see [link to relevant documentation]. Figure 8 and Figure 9 As shown, both sides of the inner wall of the fixed frame 261 and the first sliding patch 262 are provided with limiting grooves 265. Both sides of the first sliding patch 262 and the second sliding patch 263 are provided with connecting components 27. The connecting components 27 include fixed posts 271 fixedly connected to both sides of the first sliding patch 262 and the second sliding patch 263. The fixed posts 271 are rotatably connected to two staggered and symmetrically arranged rotation limiting pieces 272. A torsion spring 273 is provided between the rotation limiting pieces 272 and the fixed posts 271.

[0042] Two symmetrically arranged baffles 266 are fixedly connected to the port of the limiting slide 265. The distance between the baffles 266 is less than the maximum length of the two rotating limiting plates 272. In the initial state, the two rotating limiting plates 272 are held in a certain position by the torsion spring 273. Figure 8 and Figure 9 The maximum length shown, the rotating limit plate 272 can be made as follows Figure 10 As shown in the rotation, when installing the fixed frame 261, the first sliding piece 262 and the second sliding piece 263, the user can twist the two rotation limit pieces 272 to reduce their maximum length, and then insert the connecting component 27 into the limit slide groove 265.

[0043] It is important to note that the spring force of the torsion spring 273 should be relatively large to prevent the second sliding piece 263 from sliding out of the first sliding piece 262, or the first sliding piece 262 from sliding out of the fixed frame 261. Through the interaction between the connecting component 27 and the baffle 266 inside the limiting slide groove 265, when the second sliding piece 263 slides to its maximum distance, it can drive the first sliding piece 262 to continue sliding, and prevent the second sliding piece 263 from sliding out of the first sliding piece 262, or the first sliding piece 262 from sliding out of the fixed frame 261, thus avoiding a large gap between the three. This ensures the sealing of the through groove 211 after it is blocked, thereby preventing air leakage in the negative pressure chamber 21 and making the transfer of the LED light strip by the robotic arm 1 more stable.

[0044] In addition, to achieve the effect of synchronous operation of multiple sets of negative pressure maintaining components 26, see [link to relevant documentation]. Figure 2 , Figure 3 and Figure 4 As shown, two moving ranging components 23 are also provided inside the negative pressure chamber 21. The moving ranging component 23 includes a drive device 234 fixedly connected to the outside of the negative pressure chamber 21. The output end of the drive device 234 passes through one side of the negative pressure chamber 21 and is connected to a control gear 233. Two sliding racks 232 mesh on the upper and lower sides of the control gear 233. The two sliding racks 232 are symmetrically arranged around the center of the control gear 233. The two sliding racks 232 are slidably connected to the negative pressure chamber 21. Sliding plates 24 are slidably connected inside several through slots 211. The sliding racks 232 are fixedly connected to one of the sliding plates 24. Connecting strips 25 are fixedly connected to the top of several sliding plates 24. Two T-shaped sliders 264 are fixedly connected to one end of the second sliding patch 263. Two T-shaped grooves 241 are opened on one side of the sliding plate 24. The T-shaped sliders 264 are slidably connected to the T-shaped grooves 241.

[0045] Among them, the driving device 234 is a motor, which drives the control gear 233 to rotate, thereby causing the sliding rack 232, which is centrally symmetrically arranged on the upper and lower sides, to slide closer to or further away from each other. The connecting strip 25 is used to connect multiple sliding plates 24 synchronously. In this way, when the sliding rack 232 moves, it can drive multiple sliding plates 24 to move synchronously, which in turn works with the T-shaped slide groove 241 and the T-shaped slider 264 to drive the negative pressure maintaining component 26 to work.

[0046] In order to enable the multiple sets of negative pressure maintaining components 26 inside the negative pressure chamber 21 to operate synchronously, two sets of moving distance measuring components 23 are respectively set on both sides inside the negative pressure chamber 21 and are symmetrical to each other. The two drive devices 234 are controlled by the same control element to ensure synchronization.

[0047] Furthermore, auxiliary clamping plates 231 are fixedly connected to the bottom of several sliding plates 24. There are two auxiliary clamping plates 231. An infrared sensor 2311 is provided on the side of the auxiliary clamping plates 231 that is close to each other. The infrared sensor 2311 is electrically connected to the driving device 234.

[0048] When it is necessary to adsorb LED light strips, the robotic arm 1 first controls the negative pressure chamber 21 to descend until the auxiliary clamping plate 231 contacts the worktable where the LED light strip is located. At this time, the LED light strip is located in the middle of the two auxiliary clamping plates 231. The infrared sensor 2311 detects the distance between the auxiliary clamping plate 231 and the LED light strip. Then, the infrared sensor 2311 sends an electrical signal to the drive device 234 and controls the working cycle of the drive device 234. After the drive device 234 starts according to the electrical signal, it causes the control gear 233 to rotate at a corresponding angle. In conjunction with the sliding rack 232, multiple sets of first sliding patches 262 and second sliding patches 263 slide a corresponding distance, thereby closing the excess part of the through groove 211 according to the width of the LED light strip and reducing the cavity part of the through groove 211.

[0049] Furthermore, after the auxiliary clamping plate 231 moves, it will eventually contact both sides of the LED light strip. Combined with the negative pressure adsorption of the negative pressure chamber 21, it can more stably clamp and transfer the LED light strip.

[0050] The working principle of this device is as follows:

[0051] When LED light strips need to be transferred, firstly, the robotic arm 1 controls the light strip adsorption mechanism 2 to descend, causing the auxiliary clamping plate 231 to contact the worktable. The LED light strip is positioned between the two auxiliary clamping plates 231. Then, the infrared sensor 2311 on the auxiliary clamping plate 231 detects the width of the light strip in real time and sends a signal to the drive device 234. The drive device 234 drives the control gear 233 to rotate according to the signal, which drives the symmetrical sliding rack 232 to move. Through the connecting bar 25, it synchronously drives all the sliding plates 24 to move. The T-shaped groove 241 of the sliding plate 24 and the T-shaped slider of the negative pressure maintaining component 26 are connected. With the cooperation of 264, the first sliding patch 262 and the second sliding patch 263 of the same group slide along the fixed frame 261. The first sliding patch 262 and the second sliding patch 263 are gradually pressed down by the ramp 267 structure, sealing the cavity part of the through groove 211 that is not covered by the light strip, ensuring the airtightness of the negative pressure chamber 21. After the drive device 234 stops running, the negative pressure pump 22 starts, drawing air from the negative pressure chamber 21 to form a negative pressure. At the same time, the light strip surface is adsorbed through the through groove 211, and the auxiliary clamping plate 231 adheres to both sides of the light strip during movement, working in conjunction with the negative pressure adsorption to achieve double fixation.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-station LED light strip assembly equipment based on an industrial robot, comprising a robotic arm (1), characterized in that: A light strip adsorption mechanism (2) is provided on one side of the robotic arm (1). The light strip adsorption mechanism (2) includes a negative pressure chamber (21) provided at one end of the robotic arm (1) and a negative pressure pump (22) fixedly connected to one side of the robotic arm (1). Several through slots (211) are opened at the bottom of the negative pressure chamber (21). Several negative pressure maintaining components (26) are provided inside the negative pressure chamber (21). The negative pressure maintaining components (26) are arranged in pairs. The number of negative pressure maintaining components (26) in each group is the same as the number of through slots (211). Each group of negative pressure maintaining components (26) is symmetrically distributed at both ends of the through slots (211). When the negative pressure maintaining components (26) adsorb a narrow LED light strip in the negative pressure chamber (21), they cover the excess cavity between the through slot (211) and the LED light strip to maintain the stability of the negative pressure inside the negative pressure chamber (21). The negative pressure chamber (21) is further equipped with two symmetrically distributed moving distance measuring components (23). The moving distance measuring components (23) are used to detect the width of the LED light strip, calculate the cavity length between the through slot (211) and the LED light strip based on the actual width of the LED light strip, and drive several negative pressure maintaining components (26) to cover cavities of different lengths according to the calculated data. The negative pressure maintaining components (26) include a fixed frame (261) fixedly connected inside the negative pressure chamber (21), and the fixed frame (261) has an internal sliding mechanism. A first sliding patch (262) is provided, and a second sliding patch (263) is slidably connected inside the first sliding patch (262). A ramp (267) is provided on the opposite side of the fixed frame (261), the first sliding patch (262) and the second sliding patch (263). When the first sliding patch (262) and the second sliding patch (263) slide, the inclination between the ramps (267) causes the first sliding patch (262) and the second sliding patch (263) to adhere to the top surface of the through groove (211).

2. The multi-station LED strip assembly equipment based on industrial robots according to claim 1, characterized in that: The moving distance measuring component (23) includes a drive device (234) fixedly connected to one side of the negative pressure chamber (21). The output end of the drive device (234) passes through one side of the negative pressure chamber (21) and is connected to a control gear (233). The upper and lower sides of the control gear (233) are meshed with two sliding racks (232) arranged in a centrally symmetrical manner.

3. The multi-station LED strip assembly equipment based on industrial robots according to claim 2, characterized in that: Each of the through slots (211) has two symmetrically distributed sliding plates (24) slidably connected inside. The sliding rack (232) is fixedly connected to one of the sliding plates (24). The tops of the sliding plates (24) on the same side are fixedly connected with connecting strips (25).

4. The multi-station LED strip assembly equipment based on an industrial robot according to claim 3, characterized in that: Two T-shaped grooves (241) are provided on one side of the sliding plate (24), and two T-shaped sliders (264) are fixedly connected to one end of the second sliding patch (263). The T-shaped sliders (264) are slidably connected to the T-shaped grooves (241).

5. The multi-station LED strip assembly equipment based on an industrial robot according to claim 1, characterized in that: The inner walls of the fixed frame (261) and the first sliding patch (262) are provided with limiting grooves (265). The first sliding patch (262) and the second sliding patch (263) are provided with connecting components (27) on both sides. The connecting components (27) are slidably disposed inside the limiting grooves (265). The connecting components (27) are used to limit the sliding range of the first sliding patch (262) and the second sliding patch (263) to prevent the second sliding patch (263) from sliding out of the first sliding patch (262) or the first sliding patch (262) from sliding out of the fixed frame (261), thereby reducing the gap between the fixed frame (261), the first sliding patch (262) and the second sliding patch (263).

6. The multi-station LED strip assembly equipment based on an industrial robot according to claim 5, characterized in that: The connecting assembly (27) includes a fixed post (271) fixedly connected to both sides of the first sliding patch (262) and the second sliding patch (263). The fixed post (271) is externally rotatably connected to two misaligned and symmetrically arranged rotation limiting plates (272). A torsion spring (273) is provided between the rotation limiting plate (272) and the fixed post (271).

7. The multi-station LED strip assembly equipment based on an industrial robot according to claim 6, characterized in that: The port of the limiting slide (265) is fixedly connected to baffles (266) arranged symmetrically on the upper and lower sides, and the distance between the two baffles (266) is less than the maximum length of the two rotating limiting pieces (272).

8. The multi-station LED strip assembly equipment based on an industrial robot according to claim 3, characterized in that: Auxiliary clamping plates (231) are fixedly connected to the bottom of several sliding plates (24) located on the same side. After the negative pressure maintaining component (26) closes the cavity, the two auxiliary clamping plates (231) are respectively attached to both sides of the LED light strip.

9. The multi-station LED strip assembly equipment based on an industrial robot according to claim 8, characterized in that: Infrared sensors (2311) are provided on opposite sides of the two auxiliary clamping plates (231). The two infrared sensors (2311) are used to measure the distance between the LED light strip and the auxiliary clamping plate (231) in real time. This distance is used as the length of the cavity between the through groove (211) and the LED light strip. The infrared sensors (2311) are electrically connected to the driving device (234).

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