A rack handling system and method

Abstract

The application discloses an L-frame carrying system and method, wherein the L-frame carrying system comprises a temporary storage frame and an AVG transfer trolley, the AVG transfer trolley comprises a trolley body frame and casters and a clamping assembly in the trolley body frame; the casters are symmetrically arranged at the bottom of the trolley body frame; the casters at the two sides of the bottom are respectively located at the two sides of the temporary storage frame, and the clamping assembly is located above the temporary storage frame; the clamping assembly is connected with a lifting driving element, and the lifting driving element can drive the clamping assembly to ascend or descend towards the direction of approaching or moving away from the temporary storage frame. The application provides an L-frame carrying system and method, wherein the trolley body frame is horizontally arranged on the temporary storage frame, so that the width of the passage between the temporary storage frames is reduced, the land occupation area of the whole temporary storage area is reduced, and the effective utilization rate of the L-frame temporary storage area is improved.

Description

Technical Field

[0001] This invention relates to the field of workpiece transfer, and more specifically to an L-frame handling system and method. Background Technology

[0002] During PCB production, temporary storage racks are used multiple times to store PCBs. To achieve batch transfer of PCBs, existing technology uses L-shaped racks to place PCBs in batches, and AGVs (Automated Guided Vehicles) are used to transport the L-shaped racks and transfer the PCBs in batches.

[0003] The existing AGV transfer vehicle moves along the side of the temporary storage rack. When it is necessary to move the L-frame from position A to position B in the temporary storage rack, the AGV transfer vehicle needs to move along the side of the temporary storage rack to position A, transfer the L-frame onto the AGV transfer vehicle, then move along the side of the temporary storage rack to position B, and then transfer the L-frame to position B again. This requires frequent transfer of the L-frame between the temporary storage rack and the AGV transfer vehicle. Furthermore, since the AGV transfer vehicle needs to move along the side of the temporary storage rack, it is necessary to ensure that the distance between adjacent temporary storage racks is large enough to allow the AGV transfer vehicle to pass smoothly. Figure 1 As shown, when the AGV transfer vehicle needs to turn and change direction, a distance needs to be reserved between the temporary storage racks for the AGV transfer vehicle to turn and change direction. This makes the gap between the temporary storage racks larger, resulting in a larger area of ​​the temporary storage area and lower space utilization in the existing technology. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the problems in the related art. To this end, one of the objectives of the present invention is to provide an L-frame handling system in which the vehicle frame spans across the temporary storage rack, thereby reducing the width of the passage between the temporary storage racks, thereby reducing the footprint of the entire temporary storage area and improving the effective utilization rate of the L-frame temporary storage area.

[0005] An L-frame transport system includes a temporary storage rack and an AGV transfer vehicle. The AGV transfer vehicle includes a vehicle frame and casters and clamping components located in the vehicle frame. The casters are symmetrically arranged on both sides of the bottom of the vehicle frame. The casters on both sides of the bottom are located on both sides of the temporary storage rack, and the clamping components are located above the temporary storage rack. The clamping assembly is connected to a lifting drive, which can move the clamping assembly up or down in a direction closer to or further away from the temporary storage rack.

[0006] Furthermore, the vehicle frame is a cuboid structure, and there are four casters at the bottom of the vehicle frame. The four casters are located at the four corners of the vehicle frame, and the distance between two symmetrically arranged casters is equal to the width of the temporary storage rack.

[0007] Furthermore, a plurality of placement positions are provided above the temporary storage rack along its length, and temporary storage rollers are provided in the placement positions.

[0008] Furthermore, the temporary storage racks are arranged in multiple parallel rows, and the distance between adjacent temporary storage racks is equal to the distance between two symmetrically arranged casters.

[0009] Furthermore, the L-frame includes a base plate and a side plate, with an alignment hole provided at the end of the base plate away from the side plate, and a boss provided on the side of the side plate opposite to the base plate; The clamping assembly includes a first clamping plate and a second clamping plate arranged side by side. The bottom of the first clamping plate is provided with a latch that matches the alignment hole, and the latch is connected to a locking cylinder. The bottom of the second clamping plate is provided with a locking platform that matches the boss.

[0010] Furthermore, the boss is located at the end of the side plate away from the bottom plate, and in the horizontal cross section, the boss is located at the center of the side plate.

[0011] Furthermore, a bottom fork arm is provided in parallel at the end of the base plate away from the side plate, and a positioning hole is provided at the end of the bottom fork arm away from the side plate.

[0012] Furthermore, the first clamping plate and the second clamping plate are vertically fixed at both ends of the support plate, and the support plate is connected to a rotating cylinder near the edge of the first clamping plate or the second clamping plate. The vehicle frame also includes two vertically arranged support columns, with a first crossbar between the two support columns. Hinged brackets are provided on both sides of the first crossbar. The support plate is rotatably connected to the hinged brackets. One end of the rotating cylinder is fixedly connected to the first crossbar, and the other end is fixedly connected to the edge of the support plate.

[0013] Furthermore, the lifting drive component includes a chain and a lifting drive cylinder. A second crossbar is provided above the first crossbar. The chain passes around the second crossbar, with one end fixed in the first crossbar and the other end fixed in the support column. The first crossbar is connected to the lifting drive cylinder.

[0014] The second objective of this application is to provide a method for transporting L-frames, including: In the AGV transfer vehicle, the lifting drive component drives the clamping assembly to rise in a direction away from the temporary storage rack, so that the height of the clamping assembly is greater than the height of the L-shaped frame in the temporary storage rack. The AGV transfer vehicle moves along the temporary storage rack to the starting position; The lifting drive unit drives the clamping assembly to descend towards the temporary storage rack, so that the clamping assembly clamps the L-frame; The lifting drive unit drives the clamping assembly to rise away from the temporary storage rack, making the height of the clamping assembly greater than the height of the L-shaped frame in the temporary storage rack; the AGV transfer vehicle moves along the temporary storage rack to the termination position. The lifting drive unit drives the clamping assembly to descend towards the temporary storage rack, and the clamping assembly releases the L-frame, so that the L-frame is moved from the starting position to the ending position.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This application provides an L-frame handling system, including a temporary storage rack and an AGV transfer vehicle. The AGV transfer vehicle includes a vehicle frame and casters and a clamping assembly located within the vehicle frame. The casters are symmetrically arranged on both sides of the bottom of the vehicle frame, and the casters on both sides of the bottom are respectively located on both sides of the temporary storage rack. The clamping assembly is located above the temporary storage rack. The clamping assembly is connected to a lifting drive, which can drive the clamping assembly to move up or down towards or away from the temporary storage rack. The casters are symmetrically located on both sides of the bottom of the vehicle frame and on both sides of the width of the temporary storage rack, so that the clamping assembly is directly above the temporary storage rack. That is, the entire vehicle frame spans across the temporary storage rack. By moving the casters, the clamping assembly can be moved to various positions on the temporary storage rack to achieve the clamping and placement of the L-frame. Simultaneously, the lifting drive can drive the clamping assembly to move up and down, ensuring that the clamping assembly can bypass obstacles and achieve the clamping, transporting, and placing of the L-frame at various positions. This application can improve the handling efficiency of L-frames, and only requires ensuring that the gap between adjacent temporary storage racks is sufficient for casters to pass through. Compared with the prior art, which requires the gap to be sufficient for the entire AGV transfer vehicle to pass through, this application reduces the width of the passage between temporary storage racks, thereby reducing the footprint of the entire temporary storage area and improving the effective utilization rate of the L-frame temporary storage area.

[0016] This application provides a method for transporting an L-frame, comprising: a lifting drive in an AGV transfer vehicle driving a clamping assembly to rise away from the temporary storage rack, such that the height of the clamping assembly is greater than the height of the L-frame in the temporary storage rack; the AGV transfer vehicle moving along the temporary storage rack to a starting position; the lifting drive driving the clamping assembly to descend towards the temporary storage rack, such that the clamping assembly clamps the L-frame; the lifting drive driving the clamping assembly to rise away from the temporary storage rack, such that the height of the clamping assembly is greater than the height of the L-frame in the temporary storage rack; the AGV transfer vehicle moving along the temporary storage rack to a ending position; the lifting drive driving the clamping assembly to descend towards the temporary storage rack, and the clamping assembly releases the L-frame, thereby transporting the L-frame from the starting position to the ending position. This application's lifting drive component can drive the clamping assembly to move up and down, ensuring that the clamping assembly can bypass obstacles and realize the clamping, transporting, and placing of L-frames at various positions, thereby improving the transport efficiency of L-frames. Simultaneously, this application's lifting drive component can drive the clamping assembly to move up and down, ensuring that the clamping assembly can bypass obstacles and realize the clamping, transporting, and placing of L-frames at various positions. This application can improve the transport efficiency of L-frames, and only needs to ensure that the gap between adjacent temporary storage racks is sufficient for casters to pass through. Compared to the prior art, which requires a gap sufficient for the entire AGV transfer vehicle to pass through, this application can reduce the spacing between temporary storage racks, increasing the overall footprint of the temporary storage area. Furthermore, by utilizing the unique positional relationship between the L-frame AGV transfer vehicle and the temporary storage racks, the width of the passage between the temporary storage racks is reduced, thereby reducing the overall footprint of the temporary storage area and improving the effective utilization rate of the L-frame temporary storage area. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] In the attached image:

[0020] Figure 1 This is a schematic diagram showing the positions of the temporary storage rack and the AGV transfer vehicle in the existing technology; Figure 2 This is a schematic diagram showing the locations of the temporary storage rack and the AGV transfer vehicle in this application; Figure 3 This is a schematic diagram of the AGV transfer vehicle without clamping the L-frame.

[0021] Figure 4A schematic diagram of the structure when the AGV transfer vehicle holds the L-frame.

[0022] Figure 5 This is a cross-sectional schematic diagram of an AGV transport vehicle. Figure 6 This is a schematic diagram of the L-frame structure.

[0023] Reference numerals: 10. AGV transfer vehicle; 11. Support column; 12. Caster; 13. First crossbar; 14. Second crossbar; 15. Hinge bracket; 16. Support plate; 17. First clamping plate; 18. Second clamping plate; 19. Lock; 20. Locking cylinder; 21. Rotating cylinder; 22. Chain; 23. Lifting drive cylinder; 24. L-frame; 241. Base plate; 242. Side plate; 243. Positioning hole; 25. PCB board; 26. Bottom fork arm; 27. Identifier; 28. Scanner; 29. ​​Boss; 30. Card table; 31. Temporary storage rack; 32. Temporary storage roller. Detailed Implementation

[0024] To provide a clearer understanding of the technical features, objectives, and effects of this invention, specific embodiments are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or element referred to must have a specific orientation; therefore, they should not be construed as limitations on this invention.

[0025] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "linking," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0026] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the invention with unnecessary detail.

[0027] Example 1 Please see Figure 2 This application provides an L-frame handling system, including a temporary storage rack 31 and an AGV transfer vehicle 10. The AGV transfer vehicle 10 includes a vehicle frame and casters 12 and a clamping assembly located in the vehicle frame. The casters 12 are symmetrically arranged on both sides of the bottom of the vehicle frame. The casters 12 on both sides of the bottom are respectively located on both sides of the temporary storage rack 31. The clamping assembly is located above the temporary storage rack 31. The clamping assembly is connected to a lifting drive, which can drive the clamping assembly to move up or down in a direction closer to or away from the temporary storage rack 31.

[0028] The casters 12 of this application are symmetrically located on both sides of the bottom of the vehicle frame and on both sides of the width of the temporary storage rack 31, so that the clamping assembly is located directly above the temporary storage rack 31. That is, the entire vehicle frame spans over the temporary storage rack 31. By moving the casters 12, the clamping assembly can be moved to various positions on the temporary storage rack 31 to achieve the clamping and placement of the L-frame 24. At the same time, the lifting drive of this application can drive the clamping assembly to lift and lower, ensuring that the clamping assembly can bypass obstacles and achieve the clamping, transportation and placement of the L-frame 24 at various positions. This application can improve the transportation efficiency of the L-frame 24, and only needs to ensure that the gap between adjacent temporary storage racks 31 is sufficient for the casters 12 to pass through. Compared with the prior art, which requires the gap to be sufficient for the entire AGV transfer vehicle 10 to pass through, this application reduces the width of the passage between temporary storage racks, thereby reducing the footprint of the entire temporary storage area and improving the effective utilization rate of the L-frame temporary storage area.

[0029] Example 2 Please see Figures 2-6 This application provides an L-frame handling system, including a temporary storage rack 31 and an AGV transfer vehicle 10. The AGV transfer vehicle 10 includes a vehicle frame and casters 12 and a clamping assembly located in the vehicle frame. The casters 12 are symmetrically arranged on both sides of the bottom of the vehicle frame. The casters 12 on both sides of the bottom are respectively located on both sides of the temporary storage rack 31. The clamping assembly is located above the temporary storage rack 31. The clamping assembly is connected to a lifting drive, which can drive the clamping assembly to move up or down in a direction closer to or away from the temporary storage rack 31.

[0030] Furthermore, the vehicle frame is a cuboid structure, and there are four casters 12 at the bottom of the vehicle frame. The four casters 12 are located at the four corners of the vehicle frame, and the distance between two symmetrically arranged casters 12 is equal to the width of the temporary storage rack 31. Figure 4 and 5 As shown, four casters 12 are located on both sides of the width direction of the temporary storage rack 31 and are symmetrically arranged. The four casters 12 can drive the vehicle frame to move back and forth along the length direction of the temporary storage rack 31.

[0031] The caster 12 of this application is rotatably connected to the vehicle frame. When the caster 12 rotates, it can change the direction of movement of the vehicle frame, thereby realizing the adjustment of the direction of movement of the vehicle frame.

[0032] The temporary storage rack 31 of this application has multiple placement positions arranged along its length above it, and temporary storage rollers 32 are provided in the placement positions. In actual operation, multiple temporary storage racks 31 are arranged side by side, and the distance between adjacent temporary storage racks 31 is equal to the distance between two symmetrically arranged casters 12.

[0033] In this application, the distance between the symmetrically arranged casters 12, that is, the minimum distance between two symmetrically arranged casters 12 located on both sides of the width direction of the temporary storage rack 31, can be equal to or slightly greater than the width of the temporary storage rack 31, ensuring that the gap between the temporary storage racks 31 is large enough for the casters 12 to pass through. In this application, the AGV transfer vehicle 10 moves across the temporary storage rack 31, without needing to move above the temporary storage rack 31 as in the prior art. Therefore, the distance between the temporary storage racks 31 can be limited to the passage of the casters 12, which can significantly reduce the gap between the temporary storage racks 31 and improve the space utilization rate of the temporary storage rack 31.

[0034] Furthermore, in this application, the clamping assembly clamps an L-frame 24, which includes a base plate 241 and a side plate 242. The base plate 241 and the side plate 242 are connected at an obtuse angle. Multiple PCB boards 25 are tilted against the side plate 242 to achieve batch transfer of the PCB boards 25. To achieve clamping of the L-frame 24, the clamping assembly in this application differs from the clamping of integrally formed workpieces in the prior art. The two force-bearing points of the clamping assembly need to be respectively set in the base plate 241 and the side plate 242.

[0035] Specifically, such as Figure 6As shown, the L-frame 24 includes a base plate 241 and a side plate 242. The end of the base plate 241 away from the side plate 242 has an alignment hole, and the side plate 242 opposite to the base plate 241 has a boss 29. Since the base plate 241 and the side plate 242 form a certain angle, the base plate 241 is typically horizontal, and the side plate 242 is inclined. The alignment hole is located at the end of the base plate 241 away from the side plate 242. The other force-bearing point of the clamping assembly should be located at the upper end of the side plate 242 to ensure that the L-frame 24 is subjected to overall force and to achieve smooth clamping of the L-frame 24.

[0036] In this application, the boss 29 can be an additional protrusion structure provided above the side plate 242, or the upper edge of the side plate 242 can be folded to form a folded structure that protrudes relative to the side plate 242, which is the boss 29. The length of the boss 29 can be the same as the length of the side plate 242, or it can be less than the length of the side plate 242.

[0037] Since the PCB board 25 rests against the side plate 242 near the bottom plate 241, the boss 29 needs to be set at the end of the side plate 242 away from the bottom plate 241. When the length of the boss 29 is less than the length of the side plate 242, it is necessary to ensure that the boss 29 is located at the center of the side plate 242 in the horizontal section. This is so that the center position of the side plate 242 is subjected to clamping force, thereby achieving stable clamping of the L frame 24.

[0038] In this application, a bottom fork arm 26 is arranged side-by-side at one end of the base plate 241 away from the side plate 242. The bottom fork arm 26 has a positioning hole 243 at the end away from the side plate 242. The bottom fork arms 26 extend away from the side plate 242, and each end of the bottom fork arm 26 can be provided with a positioning hole 243, ensuring that the positioning holes 243 are evenly distributed at the end of the base plate 241. When the clamping assembly clamps the L-frame 24, each positioning hole 243 can serve as a force-bearing point on the base plate 241, ensuring that the clamping assembly simultaneously clamps multiple positions of the base plate 241.

[0039] The clamping assembly of this application includes a first clamping plate 17 and a second clamping plate 18 arranged side by side. The bottom of the first clamping plate 17 is provided with a latch 19 adapted to an alignment hole; the bottom of the second clamping plate 18 is provided with a locking platform 30 adapted to a boss 29. That is, the first clamping plate 17 is used to clamp and fix the alignment hole at the end of the base plate 241, and the second clamping plate 18 is used to clamp the boss 29 in the side plate 242. Since the boss 29 is located above the side plate 242, the lengths of the first clamping plate 17 and the second clamping plate 18 are not the same. The first clamping plate 17 needs to reach the base plate 241, while the second clamping plate 18 only needs to abut against the boss 29 above the side plate 242. Therefore, the length of the first clamping plate 17 is greater than the length of the second clamping plate 18.

[0040] In this application, the latch 19 is connected to the locking cylinder 20. When the locking cylinder 20 extends, its output end drives the latch 19 to extend into the positioning hole 243, thereby fixing the end of the base plate 241. In this application, there are multiple positioning holes 243, each located on the side of the bottom fork arm 26. The stroke of the locking cylinder 20 is perpendicular to the bottom fork arm 26 in the horizontal plane, ensuring that the latch 19 can extend into or out of the positioning hole 243 under the action of the locking cylinder 20. Therefore, the extension and retraction direction of the locking cylinder 20 is horizontal and perpendicular to the extension direction of the bottom fork arm 26.

[0041] In this application, the bottom of the second clamping plate 18 is provided with a clamping platform 30. When it is necessary to clamp the L frame 24, the clamping platform 30 moves to the bottom of the boss 29 and abuts against the bottom of the boss 29. At the same time, the locking cylinder 20 drives the locking buckle 19 to insert into the positioning hole 243. The first clamping plate 17 and the second clamping plate 18 simultaneously achieve clamping and fixing of the bottom plate 241 and the side plate 242.

[0042] When the clamping assembly needs to clamp the L-frame 24, the lifting assembly first moves the clamping assembly to a position flush with the L-frame 24. At this time, the clamping platform 30 is located below the boss 29. The caster 12 moves the clamping assembly closer to the L-frame 24 until the clamping platform 30 is directly below the boss 29. Then, the lifting assembly raises the clamping assembly until the upper surface of the clamping platform 30 and the lower surface of the boss 29 abut. At this time, the latch 19 in the first clamping plate 17 is aligned with the positioning hole 243. The locking cylinder 20 drives the latch 19 to insert into the positioning hole 243, thereby clamping the L-frame 24.

[0043] In this application, the PCB board 25 in the L-frame 24 is placed at an angle. During movement, to prevent the PCB board 25 from tilting and falling, the clamping assembly can rotate the L-frame 24 in a direction that makes the side plate 242 as close to the horizontal plane as possible. This ensures that the center of gravity of the PCB board 25 is as close to the side plate 242 as possible, preventing the PCB board 25 from sliding relative to the side plate 242. Here, "making the side plate 242 horizontal" refers to rotating the L-frame 24 as a whole, causing the originally horizontal base plate 241 to tilt, and making the originally tilted side plate 242 as horizontal as possible.

[0044] Specifically, the first clamping plate 17 and the second clamping plate 18 are vertically fixed to both ends of the support plate 16. A rotating cylinder 21 is connected to the edge of the support plate 16 near the edge of the first clamping plate 17 or the second clamping plate 18. The vehicle frame of this application also includes two vertically arranged support columns 11, with a first crossbar 13 between the two support columns 11. Hinged brackets 15 are provided on both sides of the first crossbar 13. The hinged brackets 15 can be bracket structures, i.e., two brackets are arranged on both sides of the first crossbar 13 and inside the support columns 11. In the clamping assembly, the two ends of the support plate 16 in the left-right direction are respectively rotatably connected to the two hinged brackets 15, meaning the support plate 16 can rotate in the front-back direction relative to the hinged brackets 15. One end of the rotating cylinder 21 is fixedly connected to the first crossbar 13, and the other end is fixedly connected to the edge of the support plate 16. The edge of the support plate 16 can be the edge of the first clamping plate 17 or the edge of the second clamping plate 18. It should be noted that the first clamping plate 17 and the second clamping plate 18 are respectively installed at the front end and the rear end of the support plate 16, and the two hinge brackets 15 are respectively installed at the left and right ends of the support plate 16. This ensures that when the support plate 16 is pushed by the rotating cylinder 21, it can rotate with the connection point with the hinge bracket 15 as the center point.

[0045] When the L-frame 24 is not clamped, the support plate 16 is a horizontal plate. The front and rear ends of the support plate 16 are connected to the first clamping plate 17 and the second clamping plate 18, respectively. The output end of the rotating cylinder 21 is connected to the edge of the support plate 16 near the first clamping plate 17 or near the second clamping plate 18. When the rotating cylinder 21 extends, it can ensure that the support plate 16 rotates, and the center point of rotation is the connection point between the hinge bracket 15 and the support plate 16. The rotation of the support plate 16 can drive the first clamping plate 17, the second clamping plate 18 and the L-frame 24 to rotate synchronously, so as to realize the horizontal rotation of the side plate 242.

[0046] In this application, a slide rail is provided on the inner side of the support column 11, and sliders are provided at both ends of the second crossbar 14. The sliders can move up and down along the slide rail.

[0047] It should be noted that, as Figure 3 and Figure 4 As shown, when the output end of the rotating cylinder 21 is located near the edge of the support plate 16 close to the second clamping plate 18, the support plate 16 rotates counterclockwise around the rotation point when the rotating cylinder 21 is pushed out. When the output end of the rotating cylinder 21 is located near the edge of the support plate 16 close to the first clamping plate 17, the support plate 16 rotates clockwise around the rotation point when the rotating cylinder 21 is pushed out. This is because the second clamping plate 18 is used to clamp the side plate 242, and the rotation direction needs to ensure that the side plate 242 moves from a vertically inclined plate towards a direction closer to a horizontal plate. Therefore, the rotation direction is different when the connection position between the rotating cylinder 21 and the support plate 16 is different.

[0048] In this application, a scanner 28 is provided above the card holder 30. Correspondingly, an identifier 27 is provided above the protrusion 29 of the L-frame 24. The identifier 27 can be a QR code or the like. When the clamping component approaches the L-frame 24, the scanner 28 scans the identifier 27 to obtain the transmission information of the L-frame 24, thereby improving the transmission efficiency of the L-frame 24.

[0049] The lifting drive component of this application includes a chain 22 and a lifting drive cylinder 23. A second crossbar 14 is provided above the first crossbar 13. The chain 22 passes around the second crossbar 14, with one end fixed in the first crossbar 13 and the other end fixed in the support column 11. The end of the chain 22 located in the support column 11 is fixed in place. The first crossbar 13 is connected to the lifting drive cylinder 23, which can drive the second crossbar 14 to move up and down. When the second crossbar 14 moves up and down, one end of the chain 22 remains fixed in the support column 11, while the other end moves the second crossbar 14 to move up and down, thereby realizing the lifting drive of the clamping component.

[0050] Example 3 This application provides a method for transporting L-frames, including: S1: The lifting drive in the AGV transfer vehicle drives the clamping assembly to rise away from the temporary storage rack, making the height of the clamping assembly greater than the height of the L-frame in the temporary storage rack. When the AGV transfer vehicle receives an instruction to move the L-frame 24 at the starting position in the temporary storage rack 31 to the ending position, the lifting drive cylinder 23 in the AGV transfer vehicle drives the second crossbar 14 to rise, ensuring that the height of the first clamping plate 17 and the second clamping plate 18 is higher than the height of the L-frame 24 in the temporary storage rack 31.

[0051] S2: The AGV transfer vehicle moves along the temporary storage rack to the starting position; S3: The lifting drive unit drives the clamping assembly to descend towards the temporary storage rack, so that the clamping assembly clamps the L rack.

[0052] Caster 12 moves the AGV transfer vehicle to position A. Lifting drive cylinder 23 lowers the second crossbar 14 and clamping assembly to a position slightly below L-frame 24. At this time, scanner 28 scans the identifier 27 in L-frame 24 to obtain transmission information and information about L-frame 24. The clamping platform 30 is now located below the boss 29. Caster 12 moves the clamping assembly closer to L-frame 24 until the clamping platform 30 is directly below the boss 29. Lifting drive cylinder 23 then raises the second crossbar 14 and clamping assembly until the upper surface of the clamping platform 30 abuts against the lower surface of the boss 29. At this point, the latch 19 in the first clamping plate 17 aligns with the positioning hole 243. Locking cylinder 20 inserts the latch 19 into the positioning hole 243, thus clamping L-frame 24.

[0053] Rotating cylinder 21 connects to support plate 16 near the edge of second clamping plate 18. At this time, rotating cylinder 21 extends, causing support plate 16 to rotate counterclockwise until side plate 242 approaches horizontal. At this time, the center of gravity of PCB board 25 in L frame 24 is transferred to side plate 242, preventing PCB board 25 in L frame 24 from slipping.

[0054] S4: The lifting drive unit drives the clamping assembly to rise in a direction away from the temporary storage rack, so that the height of the clamping assembly is greater than the height of the L-frame in the temporary storage rack; the AGV transfer vehicle moves along the temporary storage rack to the termination position.

[0055] The lifting drive cylinder 23 drives the clamping assembly to rise to a height higher than the other L-frames 24 in the temporary storage rack 31, so as to avoid interference from the other L-frames 24 with the clamping assembly and the clamped L-frames 24.

[0056] S5: The lifting drive unit drives the clamping assembly to descend towards the temporary storage rack, and the clamping assembly releases the L-frame, so that the L-frame is moved from the starting position to the ending position.

[0057] Caster 12 moves the AGV transfer vehicle to position B. Lifting drive cylinder 23 lowers the clamping assembly to a height close to position B. Rotation cylinder 21 retracts, returning support plate 16 to a horizontal position. Locking cylinder 20 retracts, and latch 19 extends from positioning hole 243, no longer limiting the base plate 241. Caster 12 slightly moves the vehicle frame away from side plate 242, separating clamping platform 30 and boss 29. Lifting drive then raises the clamping assembly, moving it away from the placed L-frame 24, thus transferring the L-frame 24.

[0058] It should be noted that in this application, the AGV transfer vehicle can transport the L-frame in the temporary storage rack A to the temporary storage rack B for placement. It is only necessary to control the AGV transfer vehicle to move to the end of the temporary storage rack A, and then move it to the position of the temporary storage rack B through the casters, so that the vehicle frame of the AGV transfer vehicle spans across the temporary storage rack B.

[0059] In this application, the AGV transfer vehicle can also transfer the L-frame at the processing equipment to the temporary storage rack. The AGV transfer vehicle first moves to the exit of the processing equipment, clamps the L-frame at the exit of the processing equipment through the cooperation of the clamping component and the lifting drive component, and moves the AGV transfer vehicle to the position of the temporary storage rack through the casters. The position of the casters is adjusted so that the casters are symmetrically located on both sides of the width direction of the temporary storage rack, thereby realizing the placement of the clamped L-frame.

[0060] This application's lifting drive component can drive the clamping assembly to move up and down, ensuring that the clamping assembly can bypass obstacles and realize the clamping, transporting, and placing of L-frames at various positions, thereby improving the transport efficiency of L-frames. Simultaneously, this application's lifting drive component can drive the clamping assembly to move up and down, ensuring that the clamping assembly can bypass obstacles and realize the clamping, transporting, and placing of L-frames at various positions. This application can improve the transport efficiency of L-frames, and only needs to ensure that the gap between adjacent temporary storage racks is sufficient for casters to pass through. Compared to the prior art, which requires a gap sufficient for the entire AGV transfer vehicle to pass through, this application can reduce the spacing between temporary storage racks, increasing the overall footprint of the temporary storage racks. Furthermore, by utilizing the unique positional relationship between the L-frame AGV transfer vehicle and the temporary storage racks, the footprint of the area where the temporary storage racks are located is reduced, lowering costs and improving space utilization.

[0061] It is understood that the above embodiments only illustrate preferred embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can freely combine the above technical features without departing from the concept of the present invention, and can also make several modifications and improvements, all of which fall within the protection scope of the present invention. Therefore, all equivalent transformations and modifications made with respect to the scope of the claims of the present invention should fall within the scope of the claims of the present invention.

Claims

1. An L-frame transport system, characterized in that, The system includes a temporary storage rack and an AGV transfer vehicle. The AGV transfer vehicle includes a vehicle frame and casters and clamping components located in the vehicle frame. The casters are symmetrically arranged on both sides of the bottom of the vehicle frame. The casters on both sides of the bottom are located on both sides of the temporary storage rack, and the clamping components are located above the temporary storage rack. The clamping assembly is connected to a lifting drive component, which can drive the clamping assembly to move up or down in a direction closer to or further away from the temporary storage rack. The vehicle frame is a cuboid structure, and there are four casters at the bottom of the vehicle frame. The four casters are located at the four corners of the vehicle frame, and the distance between two symmetrically arranged casters is equal to the width of the temporary storage rack. The L-frame includes a base plate and side plates. The end of the base plate away from the side plate is provided with an alignment hole, and the side plate opposite to the base plate is provided with a boss. The clamping assembly includes a first clamping plate and a second clamping plate arranged side by side. The bottom of the first clamping plate is provided with a latch that matches the alignment hole, and the latch is connected to a locking cylinder. The bottom of the second clamping plate is provided with a locking platform that matches the boss. The first clamping plate and the second clamping plate are vertically fixed at both ends of the support plate. The support plate is connected to the edge of the first clamping plate or the second clamping plate by a rotating cylinder. The vehicle frame also includes two vertically arranged support columns, with a first crossbar between the two support columns. Hinged brackets are provided on both sides of the first crossbar. The support plate is rotatably connected to the hinged brackets. One end of the rotating cylinder is fixedly connected to the first crossbar, and the other end is fixedly connected to the edge of the support plate.

2. The L-frame handling system according to claim 1, characterized in that, The temporary storage rack has multiple placement positions along its length above it, and each placement position is equipped with a temporary storage roller.

3. The L-frame handling system according to claim 1, characterized in that, The temporary storage racks are arranged in multiple parallel rows, and the distance between adjacent temporary storage racks is equal to the distance between two symmetrically arranged casters.

4. The L-frame handling system according to claim 1, characterized in that, The boss is located at the end of the side plate away from the bottom plate, and in the horizontal section, the boss is located at the center of the side plate.

5. The L-frame handling system according to claim 1, characterized in that, The bottom plate has a bottom fork arm arranged in parallel at the end away from the side plate, and the bottom fork arm has a positioning hole at the end away from the side plate.

6. The L-frame handling system according to claim 5, characterized in that, The lifting drive component includes a chain and a lifting drive cylinder. A second crossbar is provided above the first crossbar. The chain passes around the second crossbar, with one end fixed in the first crossbar and the other end fixed in the support column. The first crossbar is connected to the lifting drive cylinder.

7. A method for transporting L-frames using the L-frame transport system according to any one of claims 1-6, characterized in that, include: In the AGV transfer vehicle, the lifting drive component drives the clamping assembly to rise in a direction away from the temporary storage rack, so that the height of the clamping assembly is greater than the height of the L-shaped frame in the temporary storage rack. The AGV transfer vehicle moves along the temporary storage rack to the starting position; The lifting drive unit drives the clamping assembly to descend towards the temporary storage rack, so that the clamping assembly clamps the L-frame; The lifting drive unit drives the clamping assembly to rise away from the temporary storage rack, making the height of the clamping assembly greater than the height of the L-shaped frame in the temporary storage rack; the AGV transfer vehicle moves along the temporary storage rack to the termination position. The lifting drive unit drives the clamping assembly to descend towards the temporary storage rack, and the clamping assembly releases the L-frame, so that the L-frame is moved from the starting position to the ending position.

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