Double-RGV logistics trolley and butt joint structure thereof
By installing positioning cylinders and electromagnetic chucks on the RGV trolley, combined with the meshing of motor-driven gears and guide rails, the trolley can be precisely positioned and the tooling plate can be stabilized. This solves the problem of inaccurate positioning of the RGV trolley and improves the precision and safety of machining.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIER MACHINE TOOL GROUP
- Filing Date
- 2025-05-21
- Publication Date
- 2026-06-23
AI Technical Summary
In the existing technology, the positioning of the RGV trolley is not accurate, which causes the parts on the transfer tooling plate to deviate in position when they are clamped by the tooling, affecting the machining accuracy of the subsequent machining unit.
The system employs a dual RGV logistics trolley. By installing positioning cylinders and electromagnetic chucks on the trolley bracket, combined with the meshing of the motor-driven gears and the rack of the logistics bed guide rail, the trolley achieves precise positioning. The tooling plate is fixed and fixed by the cooperation of limit blocks and electromagnetic chucks to avoid positional deviation.
It improves the accuracy of the trolley's stopping position, ensures the stability of the conveying tooling plate, enhances the precision of machining and production safety, and prevents machining errors caused by the displacement of the conveying tooling plate.
Smart Images
Figure CN224393746U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical processing technology, and in particular to a dual RGV logistics trolley and its docking structure. Background Technology
[0002] A rail-guided vehicle (RGV) is a transport device that automatically travels along a pre-set track and is widely used in the machining industry, especially in machine tool production lines. It automates the transport of materials and workpieces by moving along the track, effectively reducing manual handling costs and improving production efficiency.
[0003] Patent application CN114803358A discloses a linear reciprocating double RGV flexible logistics production line, which includes a logistics bed guide rail, an RGV trolley that can move relative to the guide rail, and multiple machining units on one side of the guide rail. These machining units enable workpiece processing. During production, a crane first lifts the parts to be processed onto a specific transfer fixture plate, securing, clamping, and barcoding the parts to the fixture plate. The part information is then transmitted to the relevant control system. Next, the transfer fixture plate and parts are transported to the machining units via the RGV trolley. The fixture clamps and positions the parts and fixture plate before sending them into the machining unit for processing. After processing, the fixture is reset, and the RGV trolley removes the processed parts and fixture plate from the machining unit.
[0004] However, in actual machining, due to factors such as the response time and calculation errors of the control system itself, it is difficult to ensure that the trolley stops precisely in the ideal position. This can cause the parts on the transfer fixture plate to deviate in position when they are clamped by the fixture, thus affecting the machining accuracy of the parts in subsequent machining units. Utility Model Content
[0005] This application provides a dual RGV logistics trolley and its docking structure, which solves the problem in the prior art where the position of parts on the conveying tooling plate is easily deviated when they are clamped by the tooling due to inaccurate positioning of the dual RGV trolley, thus improving the machining accuracy of the parts by the subsequent machining unit.
[0006] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a dual RGV logistics trolley, including a trolley bracket that can cooperate with the logistics bed guide rail. Two trolley brackets are provided, and a cylinder connecting plate is fixed on one side of each trolley bracket. A positioning cylinder is fixed on the cylinder connecting plate, and the piston rod of the positioning cylinder faces downward and passes through the cylinder connecting plate. Correspondingly, a fixing block is provided on one side of the logistics bed guide rail, and a bushing is provided inside the fixing block. When the piston rod extends, the lower end of the piston rod can be inserted into the bushing. A motor is also installed at the bottom of each trolley bracket, and a gear is fixed at the output end of the motor. The gear can mesh with the rack on the side of the logistics bed guide rail.
[0007] Because the trolley support of the dual RGV logistics trolley is equipped with a positioning cylinder with the piston rod facing downwards, and a fixing block and bushing are provided on one side of the logistics bed guide rail, and the motor-driven gear at the bottom of the trolley support meshes with the rack on the logistics bed guide rail, during operation, the motor drives the trolley support to move along the logistics bed guide rail. When it approaches the target position, the positioning cylinder is activated, and the piston rod extends and inserts into the bushing, achieving precise positioning of the trolley support. Therefore, this solves the problem in existing technologies where inaccurate positioning of the dual RGV trolley leads to positional deviations of parts on the transfer tooling plate when clamped by the tooling, which in turn affects the machining accuracy of subsequent machining units. This improves the accuracy of the trolley's stopping position and helps ensure the precision of machining.
[0008] As a further improvement to the above solution, an electromagnetic chuck is fixed to the front surface of the carriage support for adsorbing the conveying fixture plate, and a limit block is fixed to the side surface of the carriage support, which can abut against the edge of the conveying fixture plate. The electromagnetic chuck can generate magnetic force after being energized to firmly adsorb the conveying fixture plate, and the limit block can abut against the edge of the conveying fixture plate, thereby providing lateral constraint during transportation. Therefore, by setting up the electromagnetic chuck and the limit block, the reliable fixing of the conveying fixture plate is achieved, thereby avoiding processing errors caused by the displacement of the conveying fixture plate, and further improving the processing accuracy and production safety of the machining unit.
[0009] As a further improvement to the above scheme, a sub-support is installed at the bottom of each of the two carriage supports. The sub-support is located between the two carriage supports, with one end of the sub-support fixed to one of the carriage supports and the other end pointing to the carriage support opposite to it.
[0010] As a further improvement to the above solution, the sub-support includes sub-support A and sub-support B, and the ends of sub-support A and sub-support B that are close to each other are fixed with impact blocks; thus, when the two trolley supports are brought close to each other due to accident or error, the impact blocks of sub-support A and sub-support B will make contact first, and absorb the collision energy through elastic buffering to avoid rigid collision between the trolley supports.
[0011] As a further improvement to the above scheme, the sub-support also includes sub-support C and sub-support D. Limit switches and sub-blocks are respectively installed at the ends of sub-support C and sub-support D that are close to each other. Thus, when the two trolley supports are brought close to each other due to accident or error, the sub-block of sub-support D will trigger the limit switch on sub-support C, send a real-time signal to the control system, and immediately trigger protection mechanisms such as deceleration, stop or alarm.
[0012] This utility model also discloses a docking structure for a dual RGV logistics trolley, which includes a docking device that can be connected to the tooling on the processing unit, and the dual RGV logistics trolley as described above. The docking device is located at one end of the processing unit and close to the guide rail of the logistics bed. The docking device includes a pneumatic-hydraulic fixing bracket, and an electro-hydraulic connector A is installed on one side of the pneumatic-hydraulic fixing bracket. The electro-hydraulic connector A faces the tooling of the processing unit, and an electro-hydraulic connector B is provided on one side of the tooling. The cooperation between the electro-hydraulic connectors A and B can quickly complete the automatic transmission of electrical signals and hydraulic media, ensuring real-time data interaction and power supply between the processing unit and the logistics system.
[0013] As a further improvement to the above solution, a telescopic rod is installed on the upper part of the gas-hydraulic fixed bracket. The rear end of the telescopic rod slides with the gas-hydraulic fixed bracket, and the front end of the telescopic rod is located outside the gas-hydraulic fixed bracket and points towards the tooling on the processing unit. An end cap is connected to the outer periphery of the telescopic rod via a connecting rod. The upper end of the connecting rod is hinged to the outside of the telescopic rod, and the other end of the connecting rod is fixed to the upper edge of the end cap. The upper edge of the end cap is also hinged to the electro-hydraulic connector A. During the docking process, the telescopic rod can contact the tooling on the processing unit. The thrust of the tooling drives the telescopic rod to slide into the gas-hydraulic fixed bracket, and the connecting rod mechanism transmits the power to the end cap, causing it to flip upward and open, thereby exposing the interface of the electro-hydraulic connector A on the gas-hydraulic fixed bracket, and realizing docking with the electro-hydraulic connector B on the tooling side. The end cap can also act as a shield. In the non-docked state, the end cap is in a closed state, which can effectively shield the interface of the electro-hydraulic connector, preventing dust, debris, etc. from entering the interface and avoiding the impact of impurity accumulation on the stability of electrical signal transmission and the flow of hydraulic medium.
[0014] As a further improvement to the above solution, a spring is also installed inside the gas-liquid fixing bracket. The axis of the spring is consistent with the length direction of the telescopic rod, and the rear end of the telescopic rod can abut against the spring. The spring can absorb the impact energy received by the telescopic rod, effectively buffering the instantaneous impact force of the docking action. At the same time, after the tooling is removed, the spring can automatically release elastic potential energy, driving the telescopic rod to return to the initial position, preparing for the next docking.
[0015] As a further improvement to the above solution, two telescopic rods are provided, and correspondingly, two springs are installed inside the gas-liquid fixing bracket.
[0016] As a further improvement to the above solution, a reader / writer is also installed on the top of the gas-liquid fixing bracket.
[0017] As can be seen from the above technical solutions, this utility model has at least the following technical effects or advantages:
[0018] 1. The dual RGV logistics trolley's support frame is equipped with a positioning cylinder. The piston rod of the positioning cylinder faces downwards, and a fixing block and bushing are provided on one side of the logistics bed guide rail. Furthermore, the motor-driven gear at the bottom of the trolley support meshes with the rack on the logistics bed guide rail. During operation, the motor drives the trolley support to move along the logistics bed guide rail. When approaching the target position, the positioning cylinder activates, and the piston rod extends and inserts into the bushing, achieving precise positioning of the trolley support. Therefore, this invention solves the problem in the prior art where inaccurate positioning of the RGV trolley leads to positional deviations of parts on the conveyor tooling plate when clamped by the tooling, thus affecting the machining accuracy of subsequent machining units. It improves the accuracy of the trolley's stopping position, which is beneficial for ensuring the precision of machining.
[0019] 2. Since an electromagnetic chuck is fixed to the front surface of the carriage support and a limit block is fixed to the side surface of the carriage support, the electromagnetic chuck can generate magnetic force after being energized to firmly attract the conveying fixture plate. The limit block can abut against the edge of the conveying fixture plate. Therefore, through the cooperation of the electromagnetic chuck and the limit block, the conveying fixture plate is reliably fixed, thereby avoiding processing errors caused by the displacement of the conveying fixture plate, and further improving the processing accuracy and production safety of the machining unit.
[0020] 3. Because a stop bracket is installed between the two carriage supports of the dual RGV logistics trolley, and the end of the stop bracket can be equipped with a stop block, limit switch and stop block, rigid collision between the two carriage supports can be avoided.
[0021] 4. Because a telescopic rod is installed on the upper part of the gas-hydraulic fixed bracket, and the telescopic rod is connected to the edge of the end cap via a connecting rod, during the docking process between the docking device and the tooling, the thrust of the tooling drives the telescopic rod to slide into the gas-hydraulic fixed bracket, and the linkage mechanism transmits the power to the end cap, allowing the end cap to flip upward and open, thereby exposing the electro-hydraulic connector A interface on the gas-hydraulic fixed bracket, and realizing docking with the electro-hydraulic connector B on the tooling side. The end cap also acts as a shield; in the non-docked state, the end cap is closed, effectively shielding the interface of the electro-hydraulic connector, preventing dust, debris, etc., from entering the interface, and avoiding the impact of impurity accumulation on the stability of electrical signal transmission and the flow of hydraulic medium.
[0022] 5. Because the gas-liquid fixed bracket has a spring installed inside, the rear end of the telescopic rod can abut against the spring. Therefore, during the docking process between the docking device and the tooling, the spring can absorb the impact energy of the telescopic rod, effectively buffering the instantaneous impact force of the docking action. At the same time, after the tooling is removed, the spring can automatically release its elastic potential energy, driving the telescopic rod to return to its initial position, preparing for the next docking. Attached Figure Description
[0023] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a structural diagram of a dual RGV logistics vehicle;
[0025] Figure 2 This is a schematic diagram of the connection between the trolley bracket and the guide rail of the logistics bed.
[0026] Figure 3 This is an assembly diagram of a single trolley bracket and a conveyor tooling plate.
[0027] Figure 4 for Figure 1 Top view;
[0028] Figure 5 This is a schematic diagram showing the installation of the sub-support in a dual RGV trolley.
[0029] Figure 6 This is a schematic diagram of the tooling structure in the processing unit;
[0030] Figure 7 This is a schematic diagram of the docking device.
[0031] Figure 8 This is a schematic diagram of the connection between the telescopic rod and the end cap.
[0032] Figure 9 This is a top view (perspective) of the docking device.
[0033] Explanation of reference numerals in the attached drawings: 1. Logistics bed guide rail; 2. Trolley bracket; 3. Hydraulic cylinder connecting plate; 4. Positioning hydraulic cylinder; 5. Piston rod; 6. Fixing block; 7. Bushing; 8. Gear; 9. Rack; 10. Electromagnetic chuck; 11. Limit block; 12. Conveying tooling plate; 13. Sub-bracket A; 14. Sub-bracket B; 15. Sub-bracket C; 16. Sub-bracket D; 17. Impact block; 18. Limit switch; 19. Sub-block; 20. Pneumatic-hydraulic fixing bracket; 21. Electro-hydraulic connector A; 22. Tooling; 23. Electro-hydraulic connector B; 24. Telescopic rod; 25. End cap; 26. Spring; 27. Reader / writer; 28. Connecting rod. Detailed Implementation
[0034] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, other embodiments obtained by those skilled in the art without creative effort are all within the scope of protection of this patent.
[0035] This utility model discloses a dual RGV logistics trolley, such as Figure 1 , Figure 2 , Figure 4 As shown, it includes a trolley bracket 2 that can cooperate with the logistics bed guide rail 1. There are two trolley brackets 2. Each trolley bracket 2 has a cylinder connecting plate 3 fixed on one side. A positioning cylinder 4 is fixed on the cylinder connecting plate 3. The piston rod 5 of the positioning cylinder 4 faces downward and passes through the cylinder connecting plate 3. Correspondingly, a fixing block 6 is provided on one side of the logistics bed guide rail 1. A bushing 7 is provided inside the fixing block 6. When the piston rod 5 extends, its lower end can be inserted into the bushing 7. A motor is also installed at the bottom of each trolley bracket 2. A gear 8 is fixed at the output end of the motor. The gear 8 can mesh with the rack 9 on the side of the logistics bed guide rail 1.
[0036] In this embodiment, the logistics bed guide rail 1 is laid horizontally on the production workshop floor or machine tool, and two trolley supports 2 are set above the logistics bed guide rail 1. The trolley support 2 is a frame structure, and the cylinder connecting plate 3 is welded and fixed to the bottom of one side of the trolley support 2. The positioning cylinder 4 is fixedly installed on the cylinder connecting plate 3 by bolts. The cylinder connecting plate 3 has a round hole for the piston rod 5 to pass through. The piston rod 5 is cylindrical, and its lower end has a conical head or a chamfered lower end to facilitate the insertion of the piston rod 5 into the bushing 7. The fixing block 6 on one side of the logistics bed guide rail 1 is connected to the logistics bed guide rail 1 by bolts. The fixing block 6 has a cavity for installing the bushing 7 inside. The cavity extends vertically downward, and the bushing 7 is interference-fitted into the cavity of the fixing block 6. Motor seats are provided on both sides of the bottom of the trolley support 2, and the motor is installed on the motor seats. Correspondingly, racks 9 are fixed on both sides inside the track 1, and the two racks 9 mesh with two gears 8 respectively. It should be understood that a servo motor can be used to precisely control the rotation speed and angle; to ensure good meshing and transmission between gear 8 and rack 9, gear 8 and rack 9 have the same module. During operation, the motor drives gear 8 to rotate, gear 8 meshes with rack 9, and drives the trolley support 2 to move along the guide rail 1 of the logistics bed. When the trolley support 2 moves to the position to be positioned, the positioning cylinder 4 is activated, the piston rod 5 extends and inserts into the bushing 7, which can realize the precise positioning of the dual RGV logistics trolley.
[0037] In actual operation, the conveyor fixture plate 12 to be transported is first placed in the designated position. The motor is started, and the motor drives the gear 8 to rotate. The trolley support 2 moves along the guide rail 1 of the logistics bed to below the conveyor fixture plate 12. When the trolley support 2 approaches the target position, the control system activates the positioning cylinder 4, and the piston rod 5 extends and inserts into the bushing 7, accurately positioning the trolley. Then, the fixture 22 clamps the conveyor fixture plate 12 and transports it to the processing unit. Then, the positioning cylinder 4 retracts, the piston rod 5 is pulled out from the bushing 7, and the motor drives the trolley support 2 to move to the next working position.
[0038] In the above structure, by setting the piston rod 5 to cooperate with the bushing 7 on one side of the guide rail 1 of the logistics bed, the problem of inaccurate positioning of the RGV trolley in the prior art is effectively solved, the accuracy of the trolley's stopping position is improved, and thus the precision of subsequent machining is enhanced. At the same time, the cooperation between the motor, gear 8, and rack 9 enables stable movement of the trolley, which helps to ensure the reliability of the transportation process.
[0039] In addition, an electromagnetic chuck 10 for adsorbing and conveying the tooling plate 12 is fixed on the front surface of the trolley bracket 2, and a limit block 11 is fixed on the side surface of the trolley bracket 2. The limit block 11 can abut against the edge of the conveying tooling plate 12.
[0040] Specifically in this embodiment, such as Figure 3As shown, two electromagnetic chucks 10 are provided, symmetrically located on both sides of the front surface of the trolley bracket 2, and both electromagnetic chucks 10 are fixedly installed on the trolley bracket 2 by bolt connection. The limiting block 11 is a metal block and is fixed to the side surface of the trolley bracket 2 by welding or bolt connection. When the conveying fixture plate 12 is attracted by the electromagnetic chucks 10, the limiting block 11 can abut against the edge of the conveying fixture plate 12, limiting the conveying fixture plate 12 from the side. Therefore, during the operation of the trolley bracket 2, whether starting, accelerating, decelerating or stopping, the limiting block 11 can effectively prevent the conveying fixture plate 12 from shifting, ensuring the stability of its transportation process.
[0041] In the above structure, the electromagnetic chuck 10 facilitates the adsorption and handling of the conveying fixture plate 12, improving transportation efficiency. The limiting block 11, in conjunction with the electromagnetic chuck 10, further ensures the stability of the conveying fixture plate 12 during transportation, effectively preventing the conveying fixture plate 12 from shifting.
[0042] In addition, a sub-bracket is installed at the bottom of each of the two carriage supports 2. The sub-bracket is located between the two carriage supports 2. One end of the sub-bracket is fixed to one of the carriage supports 2, and the other end of the sub-bracket points to the carriage support 2 opposite to it.
[0043] In this embodiment, as Figure 5 As shown, the sub-support is a rod-shaped structure. One end is fixed to the trolley support by welding or bolting, while the other end hangs in the air, pointing towards the other trolley support 2 of the dual RGV logistics trolley. During the operation of the dual RGV logistics trolley, due to various factors, the two trolley supports 2 may accidentally approach each other. When the two trolley supports 2 are too close, the sub-support can act as a buffer and warning, thereby preventing the two trolley supports 2 from directly colliding rigidly and protecting the trolley supports 2 and their auxiliary equipment from damage.
[0044] Specifically, the sub-support includes sub-support A13 and sub-support B14, with impact blocks 17 fixed to the adjacent ends of sub-supports A13 and B14. In this embodiment, sub-supports A13 and B14 extend from the bottom of the two carriage supports 2 towards each other, and their length directions are aligned. When the two carriage supports 2 move relative to each other and approach, the two impact blocks 17 contact, providing a buffering effect and preventing damage to the equipment from a hard collision. It should be understood that the impact blocks 17 can possess elasticity, thereby reducing the impact force during relative movement between the two carriage supports 2 and protecting the carriage supports 2.
[0045] More specifically, the sub-support also includes sub-support C15 and sub-support D16. Limit switches 18 and sub-blocks 19 are respectively installed at the adjacent ends of sub-supports C15 and D16. In this embodiment, sub-supports C15 and D16 are also located between the two trolley supports 2. Limit switches 18 are installed at the end of sub-support C15, and sub-blocks 19 are installed at the end of sub-support D16. When the two trolley supports 2 move relative to each other and approach each other, the sub-block 19 can be sensed by the limit switch 18, triggering the limit switch 18, which then sends a signal to the control system. The control system can perform corresponding operations based on this signal, such as stopping the motor or changing the trolley speed. Therefore, by using the limit switches 18 and sub-blocks 19 together, collisions between the two trolley supports 2 can be effectively avoided, improving the automation and safety of the equipment operation.
[0046] On the other hand, this utility model also discloses a docking structure for a dual RGV logistics trolley, which includes a docking device that can be connected to the tooling 22 on the processing unit, and also includes the dual RGV logistics trolley as described above. The docking device is located at one end of the processing unit and close to the side of the logistics bed guide rail 1. The docking device includes a gas-hydraulic fixing bracket 20. An electro-hydraulic connector A21 is installed on one side of the gas-hydraulic fixing bracket 20. The electro-hydraulic connector A21 faces the tooling 22 of the processing unit. An electro-hydraulic connector B23 is provided on one side of the tooling 22.
[0047] In this embodiment, as Figures 6 to 8 As shown, the gas-hydraulic fixing bracket 20 has a frame structure. Electro-hydraulic connectors A21 and B23 are both components with electrical and hydraulic interfaces. Electro-hydraulic connector A21 is bolted to the side of the gas-hydraulic fixing bracket 20, and its interface corresponds to the interface of electro-hydraulic connector B23 on the tooling 22, facilitating the transmission of electrical signals and hydraulic media when the trolley bracket 2 and the tooling 22 are docked. In the above docking structure, the arrangement of electro-hydraulic connectors A21 and B23 enables the dual RGV logistics trolley and the tooling 22 of the processing unit to quickly and accurately achieve communication of electrical signals and hydraulic media during docking. The specific structures of electro-hydraulic connectors A21 and B23 are existing technologies, well-known to those skilled in the art, and therefore will not be described in detail in this embodiment.
[0048] In the specific structure of the docking device, a telescopic rod 24 is installed on the upper part of the gas-liquid fixing bracket 20. The rear end of the telescopic rod 24 is slidably engaged with the gas-liquid fixing bracket 20. The front end of the telescopic rod 24 is located outside the gas-liquid fixing bracket 20 and points towards the tooling 22 on the processing unit. An end cap 25 is connected to the outer periphery of the telescopic rod 24 through a connecting rod 28. The upper end of the connecting rod 28 is hinged to the outside of the telescopic rod 24. The other end of the connecting rod 28 is fixed to the upper edge of the end cap 25. The upper edge of the end cap 25 is also hinged to the electro-hydraulic connector A21.
[0049] In this embodiment, the gas-hydraulic fixing bracket 20 has an internal slide or cavity for accommodating the telescopic rod 24. The telescopic rod 24 is a horizontally extending rod, with its rear end installed inside the slide or cavity of the gas-hydraulic fixing bracket 20, and its front end extending out of the gas-hydraulic fixing bracket 20 to contact the tooling 22 on the processing unit. When the tooling 22 moves and contacts the telescopic rod 24, the telescopic rod 24 slides into the gas-hydraulic fixing bracket 20. During the sliding of the telescopic rod 24, the connecting rod 28 drives the end cap 25 to flip upward, thereby exposing the connector of the electro-hydraulic connector A21. At this time, the electro-hydraulic connector A21 can dock with the electro-hydraulic connector B23 on the tooling 22, creating conditions for the subsequent transmission of electrical signals and hydraulic media.
[0050] In the above structure, the end cap 25 can be opened or closed by the cooperation of the telescopic rod 24 and the end cap 25. The end cap 25 acts as a shield in the docking device. In the non-docked state, the end cap 25 is closed, effectively shielding the interface of the electro-hydraulic connector A21, preventing dust, debris, etc., from entering the interface and avoiding the impact of impurity accumulation on the stability of electrical signal transmission and the flow of hydraulic medium.
[0051] Specifically, such as Figure 9 As shown, a spring 26 is also installed inside the gas-liquid fixing bracket 20. The axial direction (i.e., the length direction) of the spring 26 is consistent with the length direction of the telescopic rod 24, and the rear end of the telescopic rod 24 can abut against the spring 26. In this embodiment, the spring 26 is installed in the slide or cavity of the gas-liquid fixing bracket 20. When the telescopic rod 24 is impacted by an external force, the spring 26 is compressed and can absorb the impact force; when the external force disappears, the spring 26 extends and can push the telescopic rod 24 to return to its original position. In the above structure, the spring 26 effectively buffers the impact force of the telescopic rod 24 during the docking process, and also ensures that the telescopic rod 24 can automatically return to its original position when not in use, preparing for the next docking, thereby improving the service life and working efficiency of the equipment.
[0052] More specifically, two telescopic rods 24 are provided, symmetrically installed on the upper part of the gas-liquid fixing bracket 20. Each telescopic rod 24 is equipped with a spring 26. When the fixture 22 moves, both telescopic rods 24 can simultaneously contact the side of the fixture 22. That is, during the positioning of the moving trolley 2 and the process of the fixture 22 approaching the moving trolley, the telescopic rods 24 of the docking device will gradually retract under the push of the fixture 22. At this time, the spring 26 is compressed, and the elastic force generated by the spring 26 can buffer the impact force of the movement of the fixture 22, avoiding a hard collision between the fixture 22 and the docking device, and protecting the fixture 22 and related components of the docking device from damage. When the fixture 22 needs to leave the docking device, the spring 26 extends, providing a restoring thrust for the telescopic rods 24, allowing the telescopic rods 24 to return to their initial position, preparing for the next docking. This structure enhances the stability and reliability of the docking device during the docking process, which is conducive to ensuring the smooth operation of the production process.
[0053] In addition, a reader / writer 27 is installed on the top of the gas-liquid fixing bracket 20. The reader / writer 27 can read and write electronic tag information on the transfer tooling plate 12. During the docking process between the docking device and the tooling 22, the reader / writer 27 can acquire data such as part information and processing progress on the transfer tooling plate 12. The reader / writer 27 is a commercially available product, well-known to those skilled in the art, and therefore will not be described in detail. In this embodiment, the installation of the reader / writer 27 enables automated reading and transmission of information from the transfer tooling plate 12, improving the level of information management in the production process, helping to optimize the production flow, and increasing production efficiency.
[0054] The working process of this utility model is as follows:
[0055] In machining production, when the dual RGV logistics trolley starts working, the motor drives the gear 8 at the bottom of the trolley support 2 to rotate. The gear 8 meshes with the rack 9 on one side of the logistics bed guide rail 1, causing the trolley to move along the logistics bed guide rail to below the conveying fixture plate 12. When the trolley support 2 reaches the predetermined position, the positioning cylinder 4 is activated, and the piston rod 5 extends and inserts into the bushing 7 in the fixing block 6 on one side of the logistics bed guide rail 1, achieving precise positioning of the trolley support. Next, the electromagnetic chuck 10 on the front surface of the trolley support 2 is energized to attract the conveying fixture plate 12, while the limiting block 11 on the side surface abuts against the edge of the fixture plate to prevent it from shifting. Subsequently, the trolley transports the conveying fixture plate 12 to the fixture 22 of the processing unit. The positioning cylinder 4 is activated, and the piston rod 5 extends and inserts into the bushing 7 in the fixing block 6 on one side of the logistics bed guide rail 1, achieving precise positioning of the trolley support and preparing for subsequent parts processing.
[0056] During the transportation of the dual RGV logistics trolleys, the impact block 17, limit switch 18, and component block 19 on the component support cooperate to ensure the accurate relative position between the two trolley supports 2, reducing shaking and collisions. During the docking process between the docking device and the tooling 22, the two telescopic rods 24 on the pneumatic-hydraulic fixing bracket 20 contact the tooling 22, the end cover 25 opens, and the electro-hydraulic connector A21 docks with the electro-hydraulic connector B23 to realize the transmission of electrical signals and hydraulic media.
[0057] This equipment achieves precise stopping of the trolley bracket 2 through the cooperation of piston rod 5 with the fixing block 6 and bushing 7 on the guide rail of the logistics bed. This effectively solves the problem in existing technology where the positioning of the double RGV trolley is inaccurate, causing the parts on the conveying tooling plate 12 to deviate when clamped by the tooling 22, thus affecting the machining accuracy. At the same time, the electromagnetic chuck and limit block ensure the stability of the conveying tooling plate during transportation; the sub-bracket controls the relative position between the two trolley brackets 2 and ensures smooth transportation; the docking device and reader / writer improve the level of production automation and information management, ultimately improving the precision and production efficiency of machining.
[0058] In the description of this utility model, the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for describing this utility model and do not require that this utility model be constructed or operated in a specific orientation, and therefore should not be construed as limiting this utility model. The terms "connected" and "linked" in this utility model should be interpreted broadly. For example, they can refer to a connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.
[0059] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in its embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novelty disclosed herein.
Claims
1. A dual RGV logistics trolley, comprising a trolley bracket (2) capable of cooperating with a logistics bed guide rail (1), characterized in that, There are two trolley brackets (2). Each trolley bracket (2) has a cylinder connecting plate (3) fixed on one side. A positioning cylinder (4) is fixed on the cylinder connecting plate (3). The piston rod (5) of the positioning cylinder (4) faces downward and passes through the cylinder connecting plate (3). Correspondingly, a fixing block (6) is provided on one side of the logistics bed guide rail (1). A bushing (7) is provided inside the fixing block (6). When the piston rod (5) extends, the lower end of the piston rod (5) can be inserted into the bushing (7). A motor is also installed at the bottom of each trolley bracket (2). A gear (8) is fixed at the output end of the motor. The gear (8) can mesh with the rack (9) on the side of the logistics bed guide rail (1).
2. The dual RGV logistics vehicle according to claim 1, characterized in that, An electromagnetic chuck (10) for adsorbing and conveying the tooling plate (12) is fixed on the front surface of the trolley bracket (2), and a limit block (11) is fixed on the side surface of the trolley bracket (2). The limit block (11) can abut against the edge of the conveying tooling plate (12).
3. The dual RGV logistics vehicle according to claim 2, characterized in that, The bottom of each of the two carriage supports (2) is equipped with a sub-support. The sub-support is located between the two carriage supports (2). One end of the sub-support is fixed to one of the carriage supports (2), and the other end of the sub-support points to the carriage support (2) opposite to it.
4. A dual RGV logistics trolley according to claim 3, characterized in that, The sub-support includes sub-support A (13) and sub-support B (14), and the ends of sub-support A (13) and sub-support B (14) that are close to each other are fixed with a striking block (17).
5. A dual RGV logistics trolley according to claim 4, characterized in that, The sub-bracket also includes sub-bracket C (15) and sub-bracket D (16). Limit switches (18) and sub-blocks (19) are respectively installed at the ends of sub-bracket C (15) and sub-bracket D (16) that are close to each other.
6. A docking structure for a dual RGV logistics vehicle, comprising a docking device capable of connecting to tooling (22) on a processing unit, characterized in that, It also includes a dual RGV logistics trolley as described in any one of claims 1 to 5, wherein the docking device is located at one end of the processing unit and close to one side of the logistics bed guide rail (1), the docking device includes a gas-hydraulic fixing bracket (20), an electro-hydraulic connector A (21) is installed on one side of the gas-hydraulic fixing bracket (20), the electro-hydraulic connector A (21) faces the tooling (22) of the processing unit, and an electro-hydraulic connector B (23) is provided on one side of the tooling (22).
7. The docking structure of a dual RGV logistics vehicle according to claim 6, characterized in that, A telescopic rod (24) is installed on the upper part of the gas-liquid fixed bracket (20). The rear end of the telescopic rod (24) is slidably engaged with the gas-liquid fixed bracket (20). The front end of the telescopic rod (24) is located outside the gas-liquid fixed bracket (20) and points towards the tooling (22) on the processing unit. An end cap (25) is connected to the outer periphery of the telescopic rod (24) through a connecting rod (28). The upper end of the connecting rod (28) is hinged to the outside of the telescopic rod (24). The other end of the connecting rod (28) is fixed to the upper edge of the end cap (25). The upper edge of the end cap (25) is also hinged to the electro-hydraulic connector A (21).
8. The docking structure of a dual RGV logistics vehicle according to claim 7, characterized in that, The gas-liquid fixing bracket (20) also has a spring (26) installed inside. The axial direction of the spring (26) is consistent with the length direction of the telescopic rod (24), and the rear end of the telescopic rod (24) can abut against the spring (26).
9. The docking structure of a dual RGV logistics vehicle according to claim 8, characterized in that, Two telescopic rods (24) are provided, and correspondingly, two springs (26) are installed inside the gas-liquid fixing bracket (20).
10. The docking structure of a dual RGV logistics vehicle according to claim 6, characterized in that, A reader (27) is also installed on the top of the gas-liquid fixation bracket (20).