Automobile EMS assembly line vertical lifting transfer mechanism

Abstract

The present application relates to EMS track conveying technical field, specifically speaking is the vertical lifting transfer mechanism of automobile EMS assembly line, including movable rail and linear rail and sub track respectively arranged in movable rail both ends, the movable rail top connects the moving beam, the moving beam top is connected with the lifting mechanism, the movable rail is close to linear rail one end and the movable rail is close to sub track one end respectively is equipped with first air pressure type bolt positioning assembly and second air pressure type bolt positioning assembly;Through first air pressure type bolt positioning assembly, second air pressure type bolt positioning assembly and gas circuit switching group, the problem of track interlacing, butt joint gap that traditional only relies on lifting platform self-positioning is easy to appear is solved, when movable rail and linear rail or sub track butt joint, through the rigid plug-in of air pressure drive bolt, limit horizontal and vertical displacement, ensure that the conveying trolley is stable transition, there is no jam, derailment risk, significantly improve the transfer stability.

Description

Technical Field

[0001] This invention relates to the field of EMS track conveying technology, specifically to a vertical lifting and turning mechanism for automotive EMS assembly lines. Background Technology

[0002] In the automotive manufacturing industry, the EMS (Electric Monorail System) assembly line is the core equipment for achieving precise vehicle body transport and connecting various assembly processes. Among them, the vertical lifting transfer mechanism plays a crucial role in transferring the vehicle body transport trolley from one track to another track with a different height. After the trolley runs along the straight track to the designated workstation, it needs to be switched to the secondary track with a different height through this mechanism to enter the next assembly process, ensuring continuous production on the final assembly line.

[0003] Currently, after track switching, the positioning relies solely on the lifting platform itself. However, due to factors such as lifting accuracy deviation, mechanical wear, and on-site vibration, the two sets of tracks are prone to intersecting, resulting in gaps at the connection points. This causes the trolley to stall, equipment wear to increase, and affects the stability of the production line. Therefore, a vertical lifting and switching mechanism for automotive EMS assembly lines is proposed to effectively avoid track intersecting, eliminate gaps in the production line, and ensure the stability of the connection between tracks. Summary of the Invention

[0004] To address the problems in the existing technology, this invention provides a vertical lifting and turning mechanism for automotive EMS assembly lines, which effectively avoids track crossing, eliminates gaps in the production line, and ensures the stability of the connection between tracks.

[0005] The technical solution adopted by this invention to solve its technical problem is a vertical lifting and turning mechanism for automotive EMS assembly lines, including a movable rail and a linear rail and a secondary rail respectively set at both ends of the movable rail. A moving beam is connected above the movable rail, and a lifting mechanism is connected above the moving beam. A first pneumatic pin positioning component and a second pneumatic pin positioning component are respectively provided at the end of the movable rail near the linear rail and the end of the movable rail near the secondary rail. An air circuit switching group connected to the first pneumatic pin positioning component and the second pneumatic pin positioning component is provided on the moving beam. A press-to-supply structure connected to the air circuit switching group is provided on the movable rail.

[0006] Specifically, the press-operated air supply structure includes an installation groove on the upper surface of the movable rail, a pressing plate slidably connected in the installation groove, a sealing shell fixedly connected to the lower surface of the movable rail, a sliding groove communicating with the interior of the shell at the bottom of the installation groove, a piston-type moving plate slidably connected in a sealed manner inside the shell, a sliding rod slidably connected to the sliding groove and fixedly connected between the piston-type moving plate and the pressing plate, a reset spring connected between the installation groove and the lower surface of the pressing plate, the sealing shell communicating with the air circuit switching group through a pipeline, and a wedge-shaped surface on the side of the pressing plate near the linear rail.

[0007] Specifically, the first pneumatic pin positioning assembly includes a first cylinder housing installed on the movable rail near the linear track end, a horizontally arranged first piston rod inside the first cylinder housing, a first sealing plate fixedly connected to the middle of the first piston rod and slidably connected to the inner wall of the first cylinder housing, both ends of the first piston rod passing through the first cylinder housing and slidably connected to the first cylinder housing, a first pin block fixedly connected to the end of the first piston rod near the linear track, and a first return spring fixedly connected between the first sealing plate and the inner wall of the first cylinder housing.

[0008] The movable rail end is equipped with a first positioning shell that is slidably connected to the first pin block, and the straight rail end is fixedly connected with a first pin shell corresponding to the first positioning shell. The end of the first cylinder shell near the straight rail is connected to the air circuit switching group through a pipeline.

[0009] Specifically, the second pneumatic pin positioning assembly includes a second cylinder housing installed on the end of the movable rail away from the linear track, a second sealing plate is slidably connected inside the second cylinder housing, a horizontally arranged second piston rod is fixedly connected to the side of the second sealing plate away from the linear track, one end of the second piston rod passes through the second cylinder housing and is fixedly connected to a second pin block, and a second return spring is fixedly connected between the second sealing plate and the inner wall of the second cylinder housing.

[0010] The end of the movable rail is equipped with a second positioning shell that is slidably connected to the second pin block. The end of the auxiliary rail is fixedly connected with a second pin shell corresponding to the second positioning shell. The end of the second cylinder shell near the linear rail is connected to the air circuit switching group through a pipeline.

[0011] Specifically, the lifting mechanism includes a fixed beam, and a scissor-type structure consisting of a first swing plate and a second swing plate is connected between the fixed beam and the moving beam. The first swing plate and the second swing plate are hinged at the middle. The upper end of the first swing plate is hinged to the fixed beam, and the lower end of the second swing plate is hinged to the moving beam. The lower end of the first swing plate is slidably connected to a first sliding groove provided on the moving beam through a first slider. The upper end of the second swing plate is slidably connected to a second sliding groove provided on the fixed beam through a second slider. The side of the moving beam is fixedly connected to the movable rail through a C-shaped hook.

[0012] An installation platform is fixedly connected to the upper surface of the fixed beam via a support member. A winding device is provided on the installation platform. Openings are provided at both ends of the fixed beam. Guide wheels are installed on one side of each opening. The steel cable of the winding device is connected to the moving beam after passing through the guide wheels and the openings.

[0013] Specifically, the air circuit switching group includes a first pressing valve and a second pressing valve disposed at both ends of the inner side of the first sliding groove. The first pressing valve is connected to the first cylinder housing through a pipeline, and the second pressing valve is connected to the second cylinder housing through a pipeline.

[0014] Specifically, the first pin block is provided with a first air storage chamber, the first pin block is provided with a first air outlet gap communicating with the first air storage chamber on the side near the linear track, the first piston rod is provided with a first air intake channel communicating with the first air storage chamber, the first piston rod is provided with a first one-way air outlet valve communicating with the first air intake channel on the side of the first sealing plate away from the linear track, and the first cylinder shell is provided with a first one-way air intake valve on the side away from the linear track.

[0015] Specifically, the second pin block is provided with a second air storage chamber, the second pin block is provided with a second air outlet gap communicating with the second air storage chamber on the side inside the second positioning shell, the second piston rod is provided with a second air intake channel communicating with the second air storage chamber, the second piston rod is provided with a second one-way air outlet valve communicating with the second air intake channel on the side of the second sealing plate away from the linear track, and the second cylinder shell is provided with a second one-way air intake valve on the side away from the linear track.

[0016] The beneficial effects of this invention are:

[0017] The vertical lifting and transfer mechanism for automotive EMS assembly lines described in this invention solves the problems of track misalignment and docking gaps that easily occur when relying solely on the self-positioning of the lifting platform in traditional methods. When the moving rail docks with the straight rail or the auxiliary rail, the pins are rigidly inserted by air pressure to limit horizontal and vertical displacement, ensuring a smooth transition of the transport trolley without the risk of jamming or derailment, and significantly improving the stability of the transfer.

[0018] The vertical lifting and turning mechanism for automotive EMS assembly lines described in this invention uses the weight of the conveyor trolley as the trigger source for the press-supply structure. No additional power is required. The trolley presses the press plate to drive the air circuit switching and pin action, realizing full automation of the trolley positioning, automatic unlocking, lifting, docking and automatic reset. This eliminates manual intervention, greatly improves the continuous production efficiency of the assembly line, and is energy-saving and highly interconnected.

[0019] The vertical lifting and turning mechanism for automotive EMS assembly lines described in this invention, when the first pin is unlocked or the second pin is inserted, releases high-pressure gas from the first or second air storage chamber in a directional manner, automatically removing debris and dirt from the track docking point, preventing impurities from affecting docking accuracy and equipment wear, breaking through the limitation of traditional positioning mechanisms that only have a single limit, and extending the life of the mechanism.

[0020] The vertical lifting and turning mechanism for automotive EMS assembly lines described in this invention automatically disconnects or connects the air circuit switching group according to the scissor fork state during the lifting process, preventing the first or second pin block from malfunctioning, ensuring that the moving rail is lifted without deviation, balancing lifting stability and air circuit control accuracy, and improving operational safety. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is an isometric view of the present invention;

[0023] Figure 2 This is an isometric view of the present invention from another perspective;

[0024] Figure 3 This is a side view of the present invention;

[0025] Figure 4 for Figure 2 Enlarged view of region A;

[0026] Figure 5 for Figure 2 Enlarged view of region B;

[0027] Figure 6 This is a cross-sectional view of the movable track portion of the present invention;

[0028] Figure 7 This is a cross-sectional view of the first cylinder housing and the second cylinder housing of the present invention.

[0029] Figure 8 for Figure 7 Enlarged view of region C;

[0030] Figure 9 for Figure 7 Enlarged view of region D;

[0031] Figure 10 This is a schematic diagram of the first sliding groove structure of the present invention;

[0032] Figure 11 This is a schematic diagram of the second sliding groove structure of the present invention;

[0033] Figure 12 for Figure 10 Enlarged view of region E;

[0034] In the diagram: 1. Movable rail; 2. Linear rail; 3. Sub-rail; 4. Moving beam; 5. Mounting groove; 6. Pressing plate; 7. Sealing shell; 8. Slide groove; 9. Piston-type moving plate; 10. Sliding rod; 11. Return spring; 12. Wedge-shaped surface; 13. First cylinder housing; 14. First piston rod; 15. First sealing plate; 16. First pin block; 17. First return spring; 18. First positioning shell; 19. First pin shell; 20. Second cylinder housing; 21. Second sealing plate; 22. Second piston rod; 23. Second pin block; 24. Second return spring; 25. Second positioning shell; 26. Second pin shell; 27. Fixed beam; 28. 29. First swing plate; 30. Second swing plate; 31. First slider; 32. First sliding groove; 33. Second slider; 34. Second sliding groove; 35. C-hook; 36. Support; 37. Mounting platform; 38. Winder; 39. Opening; 40. Guide wheel; 41. Steel cable; 42. First pressing valve; 43. Second pressing valve; 44. First air storage chamber; 45. First air outlet gap; 46. First air inlet channel; 47. First one-way air outlet valve; 48. First one-way air inlet valve; 49. Second air storage chamber; 50. Second air outlet gap; 51. Second one-way air outlet valve; 52. Second one-way air inlet valve. Detailed Implementation

[0035] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0036] To effectively avoid track overlap, eliminate production line gaps, and ensure the stability of the connection between tracks, as one embodiment of the present invention, such as... Figure 1 , Figure 2 , Figure 3 As shown, the vertical lifting and turning mechanism for the automotive EMS assembly line of the present invention includes a movable rail 1 and a linear rail 2 and a secondary rail 3 respectively disposed at both ends of the movable rail 1. A moving beam 4 is connected above the movable rail 1, and a lifting mechanism is connected above the moving beam 4. A first pneumatic pin positioning component and a second pneumatic pin positioning component are respectively provided at one end of the movable rail 1 near the linear rail 2 and at one end of the movable rail 1 near the secondary rail 3. An air circuit switching group is provided on the moving beam 4, which is connected to the first pneumatic pin positioning component and the second pneumatic pin positioning component. A press-to-supply structure is provided on the movable rail 1, which is connected to the air circuit switching group.

[0037] In use, in the initial working state of the mechanism, the end of the movable rail 1 closest to the straight rail 2 is connected to the end of the straight rail 2 through the first pneumatic pin positioning component. The horizontal and vertical relative displacement of the movable rail 1 and the straight rail 2 at the connection point is restricted by mechanical limit. When the conveying trolley moves from the straight rail 2 to the movable rail 1, the two sets of rails are rigidly connected by the first pneumatic pin positioning component, which can effectively avoid the problems of rail end overlap and docking gap. The trolley can smoothly transition from the straight rail 2 to the movable rail 1 without jamming, bumping or derailment risk, ensuring the accuracy and stability of the car body during the conveying process and reducing the impact and wear on the car body and rail equipment.

[0038] Once the conveyor trolley has fully traveled onto the movable rail 1, its own weight triggers the activation of the press-to-supply structure on the movable rail 1. The gas inside the press-to-supply structure is transmitted to the air path switching group through pipelines. At this time, the air path switching group directs the air pressure output from the press-to-supply structure to the first pneumatic pin positioning component. Under the action of the pneumatic driving force, the first pneumatic pin positioning component unlocks the movable rail 1 from the linear rail 2. After unlocking, the lifting mechanism is activated, driving the movable beam 4 and the movable rail 1, which are fixedly connected to it, to move vertically upwards synchronously. During this lifting process, the air path switching group adjusts the air path in real time, cutting off the connection between the press-to-supply structure and the first pneumatic pin positioning component to prevent the first pneumatic pin positioning component from malfunctioning due to air pressure fluctuations during the lifting process. This ensures that the movable rail 1 is lifted without deviation or jamming, guaranteeing the safety and reliability of the lifting action.

[0039] When the lifting mechanism moves the moving beam 4 and the movable rail 1 to a specific height, and the end of the movable rail 1 near the auxiliary rail 3 is aligned with the end of the auxiliary rail 3, the lifting mechanism stops operating. At this time, the air circuit switching group switches the air circuit again, connecting the press-to-supply structure to the second pneumatic pin positioning component. Under the pneumatic drive, the second pneumatic pin positioning component extends and docks with the auxiliary rail 3, and the movable rail 1 and the auxiliary rail 3 are rigidly fixed, effectively reducing the gaps or misalignments that may occur at the docking point of the two sets of rails due to lifting accuracy deviation, on-site vibration, and mechanical wear; it provides a stable rail foundation for the trolley to transition from the movable rail 1 to the auxiliary rail 3. Even if there is a height difference between the auxiliary rail 3 and the straight rail 2, the limiting effect of the second pneumatic pin positioning component can ensure the stability of the trolley when transferring across heights, and avoid the vehicle body tilting or the conveying equipment jamming;

[0040] After the movable rail 1 and the auxiliary rail 3 are stably connected by the second pneumatic pin positioning component, the conveying trolley moves along the movable rail 1 towards the auxiliary rail 3, and finally completely separates from the movable rail 1 and enters the auxiliary rail 3, realizing the vertical lifting and transfer operation from the straight rail 2, movable rail 1 and auxiliary rail 3, connecting to the next automobile assembly process and ensuring the continuity of the final assembly line process.

[0041] Once the conveyor trolley has completely left the movable rail 1 and entered the secondary rail 3, the press-to-supply structure is no longer under the pressure of the trolley and stops outputting air pressure. At this time, the second pneumatic pin positioning component resets, and the connection between the movable rail 1 and the secondary rail 3 is released. Then, the lifting mechanism drives the moving beam 4 and the movable rail 1 to move vertically downwards synchronously until the end of the movable rail 1 near the straight rail 2 is aligned with the end of the straight rail 2 again. After the movable rail 1 resets to its initial position, the air circuit switching group readjusts the air circuit again, reconnecting the press-to-supply structure with the first pneumatic pin positioning component. Since there is no trolley pressing the press-to-supply structure at this time, there is no additional air pressure input. The first pneumatic pin positioning component automatically extends under the action of its own reset structure and reconnects with the mating structure at the end of the straight rail 2, achieving a stable reconnection between the movable rail 1 and the straight rail 2. Thus, the entire mechanism returns to its initial working state. Without additional manual adjustment, it can quickly connect to the next set of conveyor trolleys for line transfer, meeting the continuous and high-efficiency production requirements of the automotive EMS assembly line.

[0042] To facilitate the provision of the necessary pneumatic power source for the operation of the first pneumatic pin positioning assembly and the second pneumatic pin positioning assembly, for example, such as Figure 6 As shown, the present invention also includes a pressing air supply structure comprising an installation groove 5 disposed on the upper surface of the movable rail 1, a pressing plate 6 slidably connected in the installation groove 5, a sealing shell 7 fixedly connected to the lower surface of the movable rail 1, a sliding groove 8 communicating with the interior of the shell at the bottom of the installation groove 5, a piston-type moving plate 9 slidably connected in the shell, a sliding rod 10 slidably connected to the sliding groove 8 and fixedly connected between the piston-type moving plate 9 and the pressing plate 6, a reset spring 11 connected between the installation groove 5 and the lower surface of the pressing plate 6, the sealing shell 7 communicating with the air circuit switching group through a pipeline, and a wedge-shaped surface 12 provided on the side of the pressing plate 6 near the linear rail 2.

[0043] In use, when the conveying trolley moves along the straight track 2 towards the movable track 1 and fully enters the movable track 1, the trolley's wheels first contact the wedge-shaped surface 12 of the pressing plate 6 near the straight track 2. The inclined structure of the wedge-shaped surface 12 guides the wheels to smoothly press down on the pressing plate 6, avoiding direct rigid collision between the trolley and the pressing plate 6. As the trolley continues to move towards the movable track 1, the downward pressure of the wheels on the pressing plate 6 gradually increases, causing the pressing plate 6 to slide vertically downward along the mounting groove 5. At this time, the reset spring 11 is compressed due to the downward movement of the pressing plate 6, storing elastic potential energy. As the pressing plate 6 slides down, the spring... The sliding rod 10 slides vertically downward along the slide groove 8. The slide groove 8 guides and limits the sliding rod 10, ensuring that the sliding rod 10 moves only in the vertical direction. The downward movement of the sliding rod 10 will directly push the piston-type moving plate 9 to slide downward in the sealing shell 7, compressing the gas inside the sealing shell 7. After the gas inside the sealing shell 7 is compressed, it forms a stable high-pressure gas. The high-pressure gas is directionally transmitted to the air circuit switching group through the pipeline connected to the sealing shell 7, providing the required air pressure power source for the subsequent control of the first pneumatic pin positioning component and the second pneumatic pin positioning component by the air circuit switching group.

[0044] When the conveying trolley completely leaves the pressing plate 6, the downward pressure on the pressing plate 6 disappears. At this time, the compressed reset spring 11 releases its elastic potential energy, generating an upward thrust that pushes the pressing plate 6 to slide vertically upward along the mounting groove 5, gradually restoring it to its initial height. As the pressing plate 6 moves upward, it drives the sliding rod 10 to reset upward along the sliding groove 8, thereby pulling the piston-type moving plate 9 inside the sealing shell 7 to slide upward, so that the internal space volume of the sealing shell 7 returns to its initial state.

[0045] For example, such as Figure 4 , Figure 7 , Figure 8 As shown, the present invention further includes the first pneumatic pin positioning assembly comprising a first cylinder housing 13 installed on one end of the movable rail 1 near the linear rail 2, a horizontally arranged first piston rod 14 disposed inside the first cylinder housing 13, a first sealing plate 15 fixedly connected to the middle of the first piston rod 14 and slidably connected to the inner wall of the first cylinder housing 13, both ends of the first piston rod 14 passing through the first cylinder housing 13 and slidably connected to the first cylinder housing 13, a first pin block 16 fixedly connected to one end of the first piston rod 14 near the linear rail 2, and a first return spring 17 fixedly connected between the first sealing plate 15 and the inner wall of the first cylinder housing 13.

[0046] The movable rail 1 is equipped with a first positioning shell 18 that is slidably connected to the first pin block 16 at one end. The linear rail 2 is fixedly connected with a first pin shell 19 corresponding to the first positioning shell 18 at one end. The first cylinder shell 13 is connected to the air circuit switching group through a pipeline at one end near the linear rail 2.

[0047] In use, when the conveying trolley has fully traveled onto the movable rail 1, the weight of the trolley triggers the activation of the press-to-supply structure. The high-pressure gas generated by the press-to-supply structure is transmitted to the air path switching group through the pipeline. At this time, the air path switching group is in a state of connecting the press-to-supply structure and the first cylinder housing 13. The high-pressure gas is directionally delivered to the end of the first cylinder housing 13 near the linear rail 2 through the pipeline. The gas squeezes the first sealing plate 15, causing the first sealing plate 15 to move away from the linear rail 2. At the same time, it squeezes the first return spring 17. The first sealing plate 15 synchronously drives the first piston rod 14 to move away from the linear rail 2. When the first piston rod 14 moves, the first pin block 16 at the end is horizontally disengaged along the guide trajectory of the first positioning shell 18, and finally completely disengages from the first pin shell 19 of the linear rail 2, realizing the docking and unlocking of the movable rail 1 and the linear rail 2, and preparing for the subsequent lifting and lowering of the movable rail 1.

[0048] After unlocking, the lifting mechanism starts, driving the moving beam 4 and the movable rail 1 to move vertically upwards synchronously. The lifting action triggers the air circuit switching group to automatically switch the air circuit state, cutting off the pipeline connection between the pressing air supply structure and the first cylinder housing 13. Since the first cylinder housing 13, the first piston rod 14, and the first sealing plate 15 are all sealed together, the gas in the first cylinder housing 13 cannot leak after the air circuit is disconnected. The first return spring 17 is always in a compressed state, and the first pin block 16 remains in the unlocked position detached from the first pin housing 19, avoiding the first pin block 16 from being accidentally inserted due to the rebound of the first return spring 17 during the lifting process.

[0049] After the conveying trolley completely detaches from the movable rail 1 and moves to the auxiliary rail 3, the lifting mechanism reverses its action, causing the movable rail 1 and the first cylinder housing 13 and other components to move vertically downwards until the movable rail 1 and the linear rail 2 are aligned again. After the movable rail 1 resets, the air circuit switching group switches the air circuit again, re-establishing the pipeline connection between the first cylinder housing 13 and the sealing housing 7. At this time, there is no trolley pressing the air supply structure, and the sealing housing 7 is under normal pressure. The gas pressure in the first cylinder housing 13 is higher than that in the sealing housing 7. The first return spring 17 releases the compressed elastic potential energy, pushing the first sealing plate 15 along the first... The inner wall of the cylinder housing 13 moves back towards the linear track 2. During the movement of the first sealing plate 15, it squeezes the gas on the side of the linear track 2, causing this part of the gas to flow back into the sealing housing 7 through the pipeline, thus completing the gas recycling. At the same time, the first sealing plate 15 drives the first piston rod 14 and the first pin block 16 to move back synchronously. The first pin block 16 is inserted into the first pin housing 19 of the linear track 2 again along the guide trajectory of the first positioning housing 18, realizing the re-rigid connection between the movable rail 1 and the linear track 2, so that the mechanism returns to its initial state and waits for the next set of trolleys to switch lines.

[0050] For example, such as Figure 5 , Figure 7 , Figure 9As shown, the present invention also includes the second pneumatic pin positioning assembly, which includes a second cylinder housing 20 installed on the end of the movable rail 1 away from the linear rail 2. A second sealing plate 21 is slidably connected inside the second cylinder housing 20. A horizontally arranged second piston rod 22 is fixedly connected to the side of the second sealing plate 21 away from the linear rail 2. One end of the second piston rod 22 passes through the second cylinder housing 20 and is fixedly connected to a second pin block 23. A second return spring 24 is fixedly connected between the second sealing plate 21 and the inner wall of the second cylinder housing 20.

[0051] The end of the movable rail 1 is equipped with a second positioning shell 25 that is slidably connected to the second pin block 23. The end of the sub-rail 3 is fixedly connected with a second pin shell 26 corresponding to the second positioning shell 25. The end of the second cylinder shell 20 near the linear rail 2 is connected to the air circuit switching group through a pipeline.

[0052] When in use, after the first pneumatic pin positioning component is unlocked, the first pin block 16 is disengaged from the first pin housing 19 and the lifting mechanism is started, the lifting mechanism drives the moving beam 4 and the movable rail 1 to move vertically upward synchronously until the movable rail 1 rises to the preset height. At this time, the end of the movable rail 1 away from the straight rail 2 is aligned with the end of the auxiliary rail 3, and the lifting mechanism stops running. Since the conveying trolley is still on the movable rail 1, the pressing plate 6 continues to be pressed by the trolley and moves downward. The reset spring 11 is compressed, and the piston-type moving plate 9 in the sealing housing 7 is in a low position. The gas in the sealing housing 7 is still in a compressed state. Some of the gas has been used to drive the first pneumatic pin to unlock. The remaining compressed gas is still in the sealing housing 7. After the lifting mechanism stops, the air circuit switching group automatically completes the air circuit switching and connects the sealing housing 7 and the end of the second cylinder housing 20 near the straight rail 2 through the pipeline.

[0053] Compressed gas pushes the second sealing plate 21 to slide smoothly along the inner wall of the second cylinder shell 20. As the second sealing plate 21 moves, it drives the second piston rod 22 to extend synchronously away from the straight track 2. The second pin block 23 at the end of the second piston rod 22 moves horizontally along the guide trajectory of the second positioning shell 25 and finally inserts into the second pin shell 26 at the end of the auxiliary track 3. Through the insertion and cooperation of the second pin block 23 and the second pin shell 26, the movable track 1 and the auxiliary track 3 form a rigid connection, which limits the horizontal misalignment and vertical jump at the docking point of the two sets of tracks and provides a stable track foundation for the transfer trolley from the movable track 1 to the auxiliary track 3.

[0054] When the conveyor trolley moves smoothly along the rigidly connected movable rail 1 to the secondary rail 3, the pressing plate 6 is no longer under pressure. The reset spring 11 of the pressing air supply structure releases its elastic potential energy, pushing the pressing plate 6 vertically upward along the mounting groove 5. Simultaneously, the pressing plate 6 drives the sliding rod 10 and the piston-type moving plate 9 to move upward along the sliding groove 8, increasing the internal volume of the sealing shell 7 and forming a negative pressure suction force. The negative pressure of the sealing shell 7 is transmitted to the second cylinder shell 20 through the pipeline. At the same time, the second reset spring 24 releases its elastic potential energy, pushing the second sealing plate 21 to slide in the opposite direction towards the straight rail 2. Under the dual action, the second sealing plate 21 drives the second piston rod 22 to retract, thereby pulling the second pin block 23 to slide along the second positioning shell 25 and completely disengage from the second pin shell 26 of the secondary rail 3. After the second pin block 23 returns to its initial storage state, the lifting mechanism starts a reverse action, driving the movable rail 1 and the second cylinder shell 20 and other components to move vertically downward, restoring them to the initial height of docking with the straight rail 2, ready for the next line transfer operation.

[0055] To facilitate the movement of the movable track 1, for example, as shown... Figure 1 , Figure 2 , Figure 3 , Figure 5 As shown, the present invention also includes a lifting mechanism comprising a fixed beam 27, wherein the fixed beam 27 and the movable beam 4 are connected by a scissor-like structure consisting of a first swing plate 28 and a second swing plate 29, wherein the first swing plate 28 and the second swing plate 29 are hinged at the middle, the upper end of the first swing plate 28 is hinged to the fixed beam 27, and the lower end of the second swing plate 29 is hinged to the movable beam 4, wherein the lower end of the first swing plate 28 is slidably connected to a first sliding groove 31 provided on the movable beam 4 via a first slider 30, and the upper end of the second swing plate 29 is slidably connected to a second sliding groove 33 provided on the fixed beam 27 via a second slider 32, and the side of the movable beam 4 is fixedly connected to the movable rail 1 via a C-shaped hook 34;

[0056] The upper surface of the fixed beam 27 is fixedly connected to the mounting platform 36 by the support member 35. The mounting platform 36 is provided with a winder 37. The fixed beam 27 has openings 38 at both ends. Guide wheels 39 are installed on one side of each opening 38. The steel cable 40 of the winder 37 is connected to the moving beam 4 after passing through the guide wheels 39 and the openings 38.

[0057] When in use, when the lifting is started, the winder 37 on the mounting platform 36 works. After the steel cable 40 is guided by the guide wheels 39 at the openings 38 at both ends of the fixed beam 27, it pulls the moving beam 4. Under the force of the steel cable 40, the scissor structure formed by the first swing plate 28 and the second swing plate 29 retracts. The first slider 30 at the lower end of the first swing plate 28 slides along the first sliding groove 31, and the second slider 32 at the upper end of the second swing plate 29 slides along the second sliding groove 33. The moving beam 4 drives the movable rail 1 to lift and lower synchronously through the C-shaped hook 34. When the lifting stops, the winder 37 stops winding and unwinding the steel cable 40. The scissor structure maintains its current state, and the movable rail 1 stops stably at the target height corresponding to the secondary rail 3.

[0058] When the descent begins, the winder 37 on the mounting platform 36 reverses its direction, slowly releasing the steel cable 40. The steel cable 40 is stably guided by the guide wheels 39 at the openings 38 at both ends of the fixed beam 27. As the winder 37 releases, the cable gradually loosens, relieving the upward tension on the moving beam 4. Under the weight of the moving beam 4 itself and the load of the movable rail 1, the moving beam 4 moves downward, causing the scissor-like structure formed by the first swing plate 28 and the second swing plate 29 to change from a retracted state to an extended state. The first slider 30 slides towards the middle of the moving beam 4, and the second slider 32 slides towards the fixed beam 27. The beam 27 slides in the middle direction, and the scissor structure continues to unfold. The moving beam 4 drives the movable rail 1 to descend vertically through the C-shaped hook 34 on the side until the movable rail 1 returns to the initial height and the end of the movable rail 1 near the straight rail 2 is aligned with the end of the straight rail 2. When the movable rail 1 returns to the position corresponding to the straight rail 2, the winding device 37 stops releasing the steel cable 40. The scissor structure remains in the current unfolded state, and the moving beam 4 and the movable rail 1 are stably stopped at the initial height, preparing for the subsequent insertion of the first pneumatic pin positioning component and connection to the next round of line transfer operation.

[0059] For example, such as Figure 7 , Figure 8 , Figure 9 As shown, the present invention also includes the air circuit switching group comprising a first pressing valve 41 and a second pressing valve 42 disposed at both ends of the inner side of the first sliding groove 31. The first pressing valve 41 is connected to the first cylinder housing 13 through a pipeline, and the second pressing valve 42 is connected to the second cylinder housing 20 through a pipeline.

[0060] When in use, when the lifting mechanism is in the initial working state, the scissor structure remains in the unfolded state. At this time, the side wall of the first slider 30 directly presses the first pressing valve 41 at the inner end of the first sliding groove 31. After the first pressing valve 41 is pressed, it connects the sealing shell 7 and the first cylinder shell 13 through a preset pipeline. When the air path is open, if there is no additional air pressure in the sealing shell 7 and no trolley presses the pressing plate 6, the first return spring 17 in the first cylinder shell 13 can push the first sealing plate 15 to move, keeping the first pin block 16 inserted into the first pin shell 19 of the linear track 2, realizing the rigid connection between the movable track 1 and the linear track 2, and providing a stable foundation for the initial transition of the trolley.

[0061] When the conveying trolley has completely traveled onto the movable rail 1, the lifting mechanism starts to rise, and the scissor structure begins to change from the extended state to the retracted state. The first slider 30 slides along the first sliding groove 31 toward the end of the moving beam 4. As the first slider 30 moves, its sidewall gradually gets away from the squeezing action on the first pressing valve 41. The first pressing valve 41 closes, and the air passage between the sealing shell 7 and the first cylinder shell 13 is cut off, ensuring the stability of the air passage when the scissor structure starts to rise.

[0062] When the lifting mechanism is activated, the winding device 37 winds up the steel cable 40, pulling the moving beam 4 upward. The scissor structure retracts, and the first slider 30 continues to slide along the first sliding groove 31 towards the end of the moving beam 4. The first pressing valve 41 remains closed, and the air passage between the sealing shell 7 and the first cylinder shell 13 is continuously cut off. When the scissor structure retracts to the preset stroke, the moving beam 4 drives the movable rail 1 to rise to the target height to dock with the secondary rail 3. The scissor structure remains stably retracted. At this time, the side wall of the first slider 30 directly presses the second pressing valve 42 at the other end of the inner side of the first sliding groove 31. The second pressing valve 42 is compressed, connecting the sealing shell 7 and the second cylinder shell 20. The compressed gas stored in the sealing shell 7 is transported to the second cylinder shell 20 through the connected air passage, pushing the second sealing plate 21 and the second piston rod 22 to move, causing the second pin block 23 to insert into the second pin shell 26 of the secondary rail 3, realizing the rigid docking of the movable rail 1 and the secondary rail 3, and providing a stable track foundation for the trolley to transfer to the secondary rail 3.

[0063] To facilitate cleaning of the connection point between the linear track 2 and the movable track 1, for example, as follows: Figure 7 , Figure 8As shown, the present invention further includes: a first air storage chamber 43 is provided in the first pin block 16; a first air outlet gap 44 communicating with the first air storage chamber 43 is provided on the side of the first pin block 16 near the linear track 2; a first air intake channel 45 communicating with the first air storage chamber 43 is provided in the first piston rod 14; a first one-way air outlet valve 46 communicating with the first air intake channel 45 is provided on the side of the first piston rod 14 located away from the linear track 2 on the side of the first sealing plate 15; and a first one-way air intake valve 47 is provided on the side of the first cylinder shell 13 away from the linear track 2.

[0064] In use, when the conveying trolley is fully driven onto the movable rail 1, its weight presses the pressing plate 6, causing the gas in the sealing shell 7 to be transported through the first pressing valve 41 and pipeline to the end of the first cylinder shell 13 near the straight track 2. This pushes the first sealing plate 15 to slide smoothly along the inner wall of the first cylinder shell 13, simultaneously driving the first piston rod 14 and the first pin block 16 fixed thereto to move away from the straight track 2. The internal space of the first cylinder shell 13 away from the straight track 2 experiences pressure changes due to the movement of the first sealing plate 15. The gas in the first cylinder shell 13 enters the first intake channel 45 in the first piston rod 14 through the first one-way exhaust valve 46. The first intake channel 45 guides the gas into the first gas storage chamber 43 in the first pin block 16. Since the first exhaust gap 44 is still sealed by the inner wall of the first pin shell 19, the gas cannot be discharged and can only gradually accumulate in the first gas storage chamber 43. As the gas is continuously introduced, the pressure in the gas storage chamber continues to rise, utilizing the compressibility of gas to achieve pressure storage.

[0065] As the first sealing plate 15 continues to move, the first piston rod 14 drives the first pin block 16 to completely disengage from the first pin housing 19. After the first pin block 16 disengages from the first pin housing 19, the first air outlet gap 44, which was originally sealed, is completely exposed at the docking gap between the linear track 2 and the movable track 1. The high-pressure gas stored in the first air storage chamber 43 is instantly discharged through the first air outlet gap 44, forming a high-pressure airflow that blows directly onto the contact surface and gap at the docking point between the linear track 2 and the movable track 1. The high-pressure airflow can effectively blow away stubborn impurities attached to the track docking point, such as welding debris and lubricating oil deposits, avoiding the problem of incomplete cleaning by traditional low-pressure air blowing. Moreover, the air blowing cleaning is only triggered when the first pin block 16 is completely disengaged from the first pin housing 19. When it is not disengaged, the air outlet gap is sealed, and the gas storage does not leak, ensuring the rigidity and stability of the first pin block 16 when it is inserted. After disengagement, it is cleaned immediately to avoid impurities remaining and affecting the next docking.

[0066] When the movable rail 1 is reset, the gas pressure in the first cylinder housing 13 is higher than that in the sealing housing 7. The first reset spring 17 releases the elastic potential energy of compression, pushing the first sealing plate 15 to reset and move. During this process, it squeezes the gas on the side of the linear track 2, causing this part of the gas to flow back into the sealing housing 7 through the pipeline and the first pressing valve 41, thus completing the gas recycling. At the same time, when the first reset spring 17 drives the first sealing plate 15 to reset, it draws air into the first cylinder housing 13 through the one-way air intake valve, storing the gas for subsequent cleaning of the track docking area.

[0067] To facilitate cleaning of the connection point between the secondary track 3 and the movable track 1, for example, as follows: Figure 7 , Figure 9 As shown, the present invention further includes: a second air storage chamber 48 is provided in the second pin block 23; a second air outlet gap 49 communicating with the second air storage chamber 48 is provided on the side of the second pin block 23 located in the second positioning shell 25; a second air intake channel 50 communicating with the second air storage chamber 48 is provided in the second piston rod 22; a second one-way air outlet valve 51 communicating with the second air intake channel 50 is provided on the side of the second sealing plate 21 away from the linear track 2; and a second one-way air intake valve 52 is provided on the side of the second cylinder shell 20 away from the linear track 2.

[0068] In use, when the movable rail 1 rises under the drive of the lifting mechanism until it is completely aligned with the sub-rail 3, and the scissor structure remains in the retracted state, the first slider 30 presses the second pressing valve 42 inside the first sliding groove 31, so that the air circuit switching group completes the reversal. The compressed gas remaining inside the sealing shell 7 is connected to the end of the second cylinder shell 20 near the straight rail 2 through the pipeline. The high-pressure gas is delivered to the second cylinder shell 20. The gas pushes the second sealing plate 21 to slide along the inner wall of the second cylinder shell 20, and simultaneously compresses the second return spring 24 between the second sealing plate 21 and the inner wall of the second cylinder shell 20.

[0069] The movement of the second sealing plate 21 reduces the volume of the space on the side of the second sealing plate 21 away from the straight track 2, and the gas pressure increases. The high-pressure gas enters the second air intake channel 50 in the second piston rod 22 through the second one-way air outlet valve 51, and is then directed to the second air storage chamber 48 in the second pin block 23. At this time, the second pin block 23 is still partially located in the second positioning shell 25, and the second air outlet gap 49 on its side is sealed by the inner wall of the second positioning shell 25. The gas cannot be discharged from the gap and can only accumulate in the second air storage chamber 48. High pressure storage is achieved by utilizing the compressibility of the gas. The pressure gradually increases as the second sealing plate 21 continues to move.

[0070] As the second sealing plate 21 continues to move, it drives the second piston rod 22 and the second pin block 23 to extend towards the secondary track 3. The second pin block 23 moves to the preset stroke, and its front end is fully inserted into the second pin housing 26 of the secondary track 3, realizing the rigid connection between the movable track 1 and the secondary track 3. At the same time, the second air outlet gap 49 on the second pin block 23 moves with the second pin block 23. The second air outlet gap 49 is exposed from the second positioning housing 25 to the connection gap between the movable track 1 and the secondary track 3. The high-pressure gas stored in the second air storage chamber 48 is instantly ejected in a direction through the second air outlet gap 49, forming a strong airflow that acts on the connection surface and gap between the movable track 1 and the secondary track 3. This thoroughly blows away any metal debris, dust, lubricating oil film and other impurities that may remain during the transfer process. This does not affect the connection rigidity and can clear obstacles before the trolley passes, preventing track jumping or trolley bumping caused by impurities.

[0071] When the conveyor trolley completely leaves the movable track 1, the pressing plate 6 loses pressure and resets under the action of its own reset structure. The reset of the pressing plate 6 drives the piston-type moving plate 9 inside the sealing shell 7 to move upward, forming a negative pressure inside the sealing shell 7. This negative pressure is transmitted to the second cylinder shell 20 through the pipeline. Together with the elastic potential energy released by the second reset spring 24, it pushes the second sealing plate 21 to slide in the opposite direction towards the straight track 2. During the reset process of the second sealing plate 21, the volume of the space on the side of the second sealing plate 21 away from the straight track 2 increases, forming a negative pressure. Outside air is drawn into the second cylinder shell 20 through the second one-way air intake valve 52, replenishing the side of the second sealing plate 21 near the reset spring. This provides a gas source for the gas storage when the second sealing plate 21 moves next time, ensuring that there is always enough gas in the second air storage chamber 48 for cleaning during the cycle.

[0072] In use, the conveying trolley moves along the straight track 2 toward the movable track 1. The trolley wheels first contact the wedge-shaped surface 12 of the pressing plate 6 on the movable track 1. The wedge-shaped surface 12 guides the wheels to press down the pressing plate 6 smoothly, avoiding rigid collisions. As the trolley continues to move, the downward pressure of the wheels on the pressing plate 6 increases. The pressing plate 6 slides vertically down along the mounting groove 5, compressing the reset spring 11. At the same time, the sliding rod 10 pushes the piston-type moving plate 9 in the sealing shell 7 to slide downwards and seal, squeezing the gas in the sealing shell 7 to form high-pressure gas. The high-pressure gas is transmitted to the gas circuit switching group through the pipeline. The high-pressure gas enters the first cylinder shell 13 near the straight track 2 through the first pressing valve 41, squeezing the first sealing plate 15 to move away from the straight track 2, compressing the first reset spring 17. The first sealing plate 15 drives the first piston rod 14 and the first pin block 16 to slide along the first positioning shell 18, gradually disengaging from the first pin shell 19.

[0073] During this process, the gas on the side of the first cylinder housing 13 away from the linear track 2 enters the first intake channel 45 of the first piston rod 14 through the first one-way exhaust valve 46, and then is introduced into the first gas storage chamber 43 of the first pin block 16. Because the first exhaust gap 44 is sealed by the inner wall of the first pin housing 19, the gas accumulates and increases in pressure in the first gas storage chamber 43. The first sealing plate 15 continues to move until the first pin block 16 is completely separated from the first pin housing 19. The high-pressure gas in the first gas storage chamber 43 is ejected through the exposed first exhaust gap 44 to blow away the impurities at the docking point of the linear track 2 and the movable track 1.

[0074] After the first pin block 16 is completely disengaged from the first pin housing 19, the winding device 37 of the lifting mechanism is activated. The winding device 37 winds up the steel cable 40. After being guided by the guide wheels 39 at the openings 38 at both ends of the fixed beam 27, the steel cable 40 pulls the moving beam 4. The moving beam 4 moves upward, causing the scissor structure to change from the extended state to the retracted state. The first slider 30 at the lower end of the first swing plate 28 slides along the first sliding groove 31 toward the end of the moving beam 4, and the second slider 32 at the upper end of the second swing plate 29 slides along the second sliding groove 33 toward the end of the fixed beam 27. As the first slider... As the cable moves, its sidewalls gradually detach from the pressure on the first pressing valve 41, the first pressing valve 41 closes, cutting off the air passage between the sealing shell 7 and the first cylinder shell 13, preventing the first pin block 16 from malfunctioning during the lifting process. The winder 37 continuously winds up the steel cable 40, the scissor structure continuously retracts, and the moving beam 4 drives the movable rail 1 to rise vertically synchronously through the C-shaped hook 34 until the end of the movable rail 1 near the sub-rail 3 is aligned with the end of the sub-rail 3. The winder 37 stops working, the scissor structure remains in the retracted state, and the movable rail 1 stops stably at the target height.

[0075] After the movable rail 1 is aligned with the sub-rail 3, the first slider 30 slides to press the second pressing valve 42 at the other end of the inner side of the first sliding groove 31. The second pressing valve 42 connects the sealing shell 7 and the second cylinder shell 20 through the pipeline. The high-pressure gas stored in the sealing shell 7 enters the second cylinder shell 20 near the end of the linear rail 2 through the pipeline, pushing the second sealing plate 21 to slide along the inner wall of the second cylinder shell 20, compressing the second return spring 24. The second sealing plate 21 drives the second piston rod 22 and the second pin block 23 to move along the second positioning shell 25 towards the sub-rail 3.

[0076] Simultaneously, the gas on the side of the second cylinder housing 20 away from the linear track 2 enters the second intake channel 50 of the second piston rod 22 through the second one-way exhaust valve 51, and is then introduced into the second air storage chamber 48 of the second pin block 23. Because the second exhaust gap 49 is sealed by the inner wall of the second positioning shell 25, the gas accumulates and increases in pressure in the second air storage chamber 48. The second sealing plate 21 continues to move until the second pin block 23 is fully inserted into the second pin shell 26 of the auxiliary track 3. The movable track 1 and the auxiliary track 3 form a rigid connection. At this time, the second exhaust gap 49 is exposed as the second pin block 23 moves. The high-pressure gas in the second air storage chamber 48 is ejected, blowing away the impurities at the connection between the movable track 1 and the auxiliary track 3.

[0077] After the movable rail 1 and the auxiliary rail 3 are stably connected, the conveying trolley moves along the movable rail 1 toward the auxiliary rail 3, smoothly passes through the connection point and enters the auxiliary rail 3, until the trolley is completely separated from the movable rail 1.

[0078] After the trolley completely leaves the movable track 1, the pressing plate 6 loses pressure, and the compressed reset spring 11 releases its elastic potential energy, pushing the pressing plate 6 to move upward along the mounting groove 5. This, in turn, pulls the piston-type moving plate 9 upward via the sliding rod 10, increasing the space inside the sealing shell 7 and creating a negative pressure. The negative pressure of the sealing shell 7 is transmitted to the second cylinder shell 20 through the pipeline. At the same time, the second reset spring 24 releases its elastic potential energy, jointly pushing the second sealing plate 21 to slide in the opposite direction towards the linear track 2. This causes the second piston rod 22 and the second pin block 23 to disengage from the second pin shell 26. The second pin block 23 returns to its initial storage state. During the reset process of the second sealing plate 21, the side of the second cylinder shell 20 away from the linear track 2 draws in outside air through the second one-way air intake valve 52, providing a reserve air source for the next use.

[0079] The winding device 37 is activated to work in reverse, slowly releasing the steel cable 40. After the steel cable 40 is relaxed, under the weight of the moving beam 4 itself and the load of the movable rail 1, the moving beam 4 drives the scissor structure to change from a retracted state to an extended state. The first slider 30 slides along the first sliding groove 31 towards the middle of the moving beam 4, and the second slider 32 slides along the second sliding groove 33 towards the middle of the fixed beam 27. The moving beam 4 drives the movable rail 1 to descend vertically through the C-shaped hook 34 until the movable rail 1 returns to its initial height, and the end of the movable rail 1 closest to the straight rail 2 aligns with the end of the straight rail 2 again. When the winding device 37 stops releasing the steel cable 40, the scissor-type structure remains in the extended state. The first slider 30 presses the first pressing valve 41 again, reconnecting the air passage between the sealing shell 7 and the first cylinder shell 13. The gas pressure inside the first cylinder shell 13 is higher than that inside the sealing shell 7. The first return spring 17 releases its elastic potential energy, pushing the first sealing plate 15 to reset. This causes the first piston rod 14 and the first pin block 16 to re-insert into the first pin shell 19 of the linear track 2. The movable rail 1 and the linear track 2 are rigidly connected again, and the mechanism returns to its initial working state, waiting for the next set of trolleys to switch lines.

[0080] 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 illustrative of the principles of 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 protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vertical lifting and transfer mechanism for an automotive EMS assembly line, characterized in that, Includes a movable rail (1) and a straight rail (2) and a secondary rail (3) respectively set at both ends of the movable rail (1). A moving beam (4) is connected above the movable rail (1). A lifting mechanism is connected above the moving beam (4). A first pneumatic pin positioning component and a second pneumatic pin positioning component are respectively provided at one end of the movable rail (1) near the straight rail (2) and at one end of the movable rail (1) near the secondary rail (3). An air circuit switching group is provided on the moving beam (4) and connected to the first pneumatic pin positioning component and the second pneumatic pin positioning component. A press-to-supply structure is provided on the movable rail (1) and connected to the air circuit switching group. The press-to-air structure includes an installation groove (5) on the upper surface of the movable rail (1), a pressing plate (6) slidably connected in the installation groove (5), a sealing shell (7) fixedly connected to the lower surface of the movable rail (1), a sliding groove (8) communicating with the inside of the shell at the bottom of the installation groove (5), a piston-type moving plate (9) slidably connected in the shell, a sliding rod (10) slidably connected to the sliding groove (8) fixedly connected between the piston-type moving plate (9) and the pressing plate (6), a reset spring (11) connected between the installation groove (5) and the lower surface of the pressing plate (6), the sealing shell (7) communicating with the air circuit switching group through a pipeline, and a wedge-shaped surface (12) provided on the side of the pressing plate (6) near the straight rail (2). The first pneumatic pin positioning assembly includes a first cylinder housing (13) installed on one end of the movable rail (1) near the linear rail (2). The first cylinder housing (13) is provided with a horizontally arranged first piston rod (14). The middle part of the first piston rod (14) is fixedly connected to a first sealing plate (15) that is slidably connected to the inner wall of the first cylinder housing (13). The two ends of the first piston rod (14) pass through the first cylinder housing (13) and are slidably connected to the first cylinder housing (13). The end of the first piston rod (14) near the linear rail (2) is fixedly connected to a first pin block (16). A first return spring (17) is fixedly connected between the first sealing plate (15) and the inner wall of the first cylinder housing (13). The end of the movable rail (1) is equipped with a first positioning shell (18) that is slidably connected to the first pin block (16), and the end of the linear rail (2) is fixedly connected with a first pin shell (19) corresponding to the first positioning shell (18). The end of the first cylinder shell (13) near the linear rail (2) is connected to the air circuit switching group through a pipeline. The second pneumatic pin positioning assembly includes a second cylinder housing (20) installed on the end of the movable rail (1) away from the linear rail (2). A second sealing plate (21) is slidably connected inside the second cylinder housing (20). A horizontally arranged second piston rod (22) is fixedly connected to the side of the second sealing plate (21) away from the linear rail (2). One end of the second piston rod (22) passes through the second cylinder housing (20) and is fixedly connected to a second pin block (23). A second return spring (24) is fixedly connected between the second sealing plate (21) and the inner wall of the second cylinder housing (20). The end of the movable rail (1) is equipped with a second positioning shell (25) that is slidably connected to the second pin block (23). The end of the sub-rail (3) is fixedly connected with a second pin shell (26) corresponding to the second positioning shell (25). The end of the second cylinder shell (20) near the linear rail (2) is connected to the air circuit switching group through a pipeline.

2. The vertical lifting and transfer mechanism for the automotive EMS assembly line according to claim 1, characterized in that, The lifting mechanism includes a fixed beam (27), and the fixed beam (27) and the moving beam (4) are connected by a scissor structure consisting of a first swing plate (28) and a second swing plate (29). The first swing plate (28) and the second swing plate (29) are hinged in the middle. The upper end of the first swing plate (28) is hinged to the fixed beam (27), and the lower end of the second swing plate (29) is hinged to the moving beam (4). The lower end of the first swing plate (28) is slidably connected to the first sliding groove (31) on the moving beam (4) via a first slider (30). The upper end of the second swing plate (29) is slidably connected to the second sliding groove (33) on the fixed beam (27) via a second slider (32). The side of the moving beam (4) is fixedly connected to the movable rail (1) via a C-shaped hook (34). The upper surface of the fixed beam (27) is fixedly connected to the mounting platform (36) by the support member (35). The mounting platform (36) is provided with a winder (37). The fixed beam (27) has openings (38) at both ends. Guide wheels (39) are installed on one side of each opening (38). The steel cable (40) of the winder (37) is connected to the moving beam (4) after passing through the guide wheel (39) and the opening (38).

3. The vertical lifting and transfer mechanism for the automotive EMS assembly line according to claim 2, characterized in that, The air circuit switching group includes a first pressing valve (41) and a second pressing valve (42) disposed at both ends of the inner side of the first sliding groove (31). The first pressing valve (41) is connected to the first cylinder housing (13) through a pipeline, and the second pressing valve (42) is connected to the second cylinder housing (20) through a pipeline.

4. The vertical lifting and transfer mechanism for the automotive EMS assembly line according to claim 3, characterized in that, The first pin block (16) is provided with a first air storage chamber (43). The first pin block (16) is provided with a first air outlet gap (44) communicating with the first air storage chamber (43) on the side close to the linear track (2). The first piston rod (14) is provided with a first air intake channel (45) communicating with the first air storage chamber (43). The first piston rod (14) is provided with a first one-way air outlet valve (46) communicating with the first air intake channel (45) on the side of the first sealing plate (15) away from the linear track (2). The first cylinder shell (13) is provided with a first one-way air intake valve (47) on the side away from the linear track (2).

5. The vertical lifting and transfer mechanism for the automotive EMS assembly line according to claim 4, characterized in that, The second pin block (23) is provided with a second air storage chamber (48). The second pin block (23) is provided with a second air outlet gap (49) communicating with the second air storage chamber (48) on one side inside the second positioning shell (25). The second piston rod (22) is provided with a second air intake channel (50) communicating with the second air storage chamber (48). The second piston rod (22) is provided with a second one-way air outlet valve (51) communicating with the second air intake channel (50) on the side of the second sealing plate (21) away from the linear track (2). The second cylinder shell (20) is provided with a second one-way air intake valve (52) on the side away from the linear track (2).

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