Double-layer material box fixture lifting type exchange receiving and placing plate equipment and receiving and placing plate method

Abstract

The present invention relates to the technical field of material storage and retrieval, and in particular to a double-layer cassette fixture lifting and exchange storage and retrieval board machine compatible with a trolley and an AGV, which includes a cassette fixture and a manipulator, and also includes a carrier vehicle, a lifting device, and a storage and retrieval material conveying device. The carrier vehicle is provided with a turnover tray. The number of lifting devices is two. Each lifting device includes a lifting conveyor belt and a lifting driver. The lifting conveyor belt includes a lifting frame body, a first lifting conveyor belt, and a second lifting conveyor belt. The first lifting conveyor belt and the second lifting conveyor belt are perpendicular to each other and are relatively rotatably arranged on the lifting frame body. In the present invention, the carrier vehicle conveys the turnover tray to the storage and retrieval material conveying device through the first lifting conveyor belt, and the storage and retrieval material conveying device conveys the turnover tray to the carrier vehicle through the second lifting conveyor belt, so that the turnover tray carrying the cassette fixture is exchanged and conveyed between the storage and retrieval material conveying device and the carrier vehicle, reducing the downtime of the storage and retrieval board machine and improving the efficiency of storing and retrieving circuit boards.

Description

Technical Field

[0001] The present invention relates to the technical field of material storage and retrieval, and in particular to a double-layer cassette jig lifting type exchange storage and retrieval board machine compatible with a trolley and an AGV. Background Art

[0002] A circuit board is one of the basic components of various electronic products. The production process of circuit boards is complex. During the processing and manufacturing of circuit boards, it is often necessary to store and retrieve circuit boards through jigs and convey them on different processing production lines.

[0003] In the existing technology, in order to improve the efficiency of storing and retrieving circuit boards, the existing technology mainly uses a storage and retrieval board machine to complete the storage and retrieval board operation. The storage and retrieval board machine mainly supplies a cassette jig loaded with circuit boards or an empty cassette jig to the storage and retrieval board station through a conveying device. At the storage and retrieval board station, a manipulator is used to pick up the circuit board from the cassette jig loaded with circuit boards and place it on the processing production line or pick up the circuit board from the processing production line and put it into the empty cassette jig. Then, the conveying device transports the cassette jig filled with circuit boards to the next production line to complete the storage and retrieval board operation of the circuit board. However, in the existing technology, it is often necessary to stop the machine for a long time to wait for the cassette jig loaded with circuit boards or the empty cassette jig to be transported to the storage and retrieval board station, which hinders the improvement of the efficiency of storing and retrieving circuit boards. Therefore, it is necessary to make improvements. Summary of the Invention

[0004] The purpose of the present invention is to provide a double-layer cassette jig lifting type exchange storage and retrieval board device and a storage and retrieval board method in view of the deficiency in the prior art that it is necessary to stop the machine for a long time to wait for the cassette jig to be transported to the storage and retrieval board station when storing and retrieving circuit boards, which hinders the improvement of the efficiency of storing and retrieving circuit boards. The carrier vehicle transports the turnover tray to the storage and retrieval material conveying device through the first lifting conveyor belt, and the storage and retrieval material conveying device transports the turnover tray to the carrier vehicle through the second lifting conveyor belt, so that the turnover tray carrying the cassette jig is exchanged and transported between the storage and retrieval material conveying device and the carrier vehicle, reducing the downtime of the storage and retrieval board machine and improving the efficiency of storing and retrieving circuit boards.

[0005] To achieve the above object, the present invention provides a double-layer cassette jig lifting and exchanging board receiving and discharging machine compatible with a trolley and an AGV, which includes a circuit board cassette jig for carrying an external one, a manipulator for receiving and discharging an external circuit board to and from the cassette jig, a carrier vehicle, a lifting device, and a board receiving and discharging conveying device. The carrier vehicle is a trolley and an AGV car, and the carrier vehicle is provided with a turnover tray for carrying the cassette jig. The lifting device is arranged on one side of the board receiving and discharging conveying device and is used for transporting the turnover tray to rise or fall between the carrier vehicle and the board receiving and discharging conveying device. The board receiving and discharging conveying device is a board receiving and discharging station and is used for receiving or conveying the turnover tray transported by the lifting device. The manipulator is arranged between the board receiving and discharging conveying device and an external processing production line. The number of the lifting devices is two, and the two lifting devices are arranged in parallel at intervals to form a conveying channel for the carrier vehicle to enter and exit. Each lifting device includes a lifting conveyor belt and a lifting driver. The lifting conveyor belt includes a lifting frame body, a first lifting conveyor belt, and a second lifting conveyor belt. The first lifting conveyor belt and the second lifting conveyor belt are perpendicular to each other and are relatively rotatably arranged on the lifting frame body. The lifting driver is used for driving the lifting frame body to lift, so that the first lifting conveyor belt and the second lifting conveyor belt rise or fall between the board receiving and discharging conveying device and the carrier vehicle. The carrier vehicle transports the turnover tray to the board receiving and discharging conveying device through the first lifting conveyor belt, and the board receiving and discharging conveying device transports the turnover tray to the carrier vehicle through the second lifting conveyor belt, so that the turnover tray carrying the cassette jig is exchanged and conveyed between the board receiving and discharging conveying device and the carrier vehicle.

[0006] Preferably, both the first lifting conveyor belt and the second lifting conveyor belt include a first driving wheel, a first driven wheel, a first conveyor belt body, and a first driver. The first driving wheel and the first driven wheel are both relatively rotatably arranged on one side of the lifting frame body. The first conveyor belt body is sleeved between the first driving wheel and the first driven wheel. The first driver is fixed on the lifting frame body and drives the first driving wheel to rotate, thereby driving the first driven wheel and the first conveyor belt body to rotate.

[0007] Preferably, a conveying device spliced with an external processing production line is arranged on one side of the board receiving and discharging conveying device away from the lifting device. The conveying device includes a bracket, a conveying roller group rotatably arranged on the bracket, a conveying driver for driving the conveying roller group to roll, and a limiting member fixed on the bracket. The conveying roller group is used for carrying and conveying an external circuit board.

[0008] The conveying device is provided with a positioning adjustment mechanism for adjusting the position of the external circuit board, the positioning adjustment mechanism comprises a rack fixedly arranged on one end of the bracket close to the limiter, an adjustment driver meshing with the rack for transmission, and an adjustment member fixed to the adjustment driver, the adjustment member is protrudingly arranged in the gap of the conveying roller group, and the rack is arranged vertically parallel to the conveying roller group;

[0009] The conveying driver drives the conveying roller group to roll and convey the external circuit board to the limiting member, and the adjustment driver moves along the gear rack meshing. The adjustment member moves parallel to the gap of the conveying roller group along the side of the external circuit board pressed against the limiting member with the movement of the adjustment driver, so that the adjustment member adjusts the position of the external circuit board pressed against the limiting member, so that the external circuit board is straightened and pressed between the limiting member and the bracket.

[0010] Preferably, the conveying roller group includes a front roller group and a rear roller group, the front roller group and the rear roller group are respectively arranged on the bracket in a rolling manner, and the conveying driver includes a front driver and a rear driver, the front driver is drivingly connected to the front roller group, and the rear driver is drivingly connected to the rear roller group;

[0011] The bracket is fixed with a plurality of dividing strips that separate the front roller group, and the front roller group is divided into a plurality of columns for conveying channels for conveying external circuit boards through the dividing strips. The rear roller group is provided with a plurality of groups and distributed corresponding to each conveying channel, so that the conveying roller group can simultaneously convey the external circuit boards in columns.

[0012] Preferably, the material collecting and unloading conveying device includes a support frame and a material collecting and unloading conveying belt relatively rotatably arranged on the support frame, the material collecting and unloading conveying belt includes two material collecting and unloading conveying belts, and a limiting plate is arranged between the two material collecting and unloading conveying belts; each of the material collecting and unloading conveying belts includes a second driving wheel, a second driven wheel, a second conveyor belt body and a second driver, the second driving wheel and the second driven wheel both rotate relatively on one side of the support frame, the second conveyor belt body sleeve is arranged between the second driving wheel and the second driven wheel, the second driver is fixed to the support frame and drives the second driving wheel to rotate, thereby driving the second driven wheel and the second conveyor belt body to rotate.

[0013] Preferably, a lifting device is arranged between the two material collecting and unloading conveyor belts, and the lifting device is used to lift the turnover tray carrying the material box jig and separate it from the material collecting and unloading conveyor belts. The lifting device includes a lifting base, a floating lifting platform slidably arranged on the lifting base, and a lifting drive fixed to the lifting base and driving the floating lifting platform to rise and fall.

[0014] Preferably, clamping devices are provided on both sides of the support frame. The two clamping devices are arranged oppositely. Each clamping device includes a fixed frame, a clamping plate, and a clamping driver. The clamping driver is fixed to the fixed frame and drives the two clamping plates to approach each other to clamp the turnover tray lifted by the lifting device, or drives the two clamping plates to move away from each other to release the turnover tray lifted by the lifting device.

[0015] Preferably, the cartridge jig includes a cartridge body. An accommodation cavity is provided inside the cartridge body. A top plate for carrying an external circuit board is provided in the accommodation cavity. A top opening is provided below the cartridge body. The top plate can be lifted through the top opening, so that the top plate slides along the inner wall of the accommodation cavity, and the external circuit board carried on the top plate is exposed from the accommodation cavity, facilitating the manipulator to pick up the external circuit board exposed from the accommodation cavity.

[0016] Preferably, a top lifting device is provided below the material loading and unloading conveying device. The top lifting device includes a top lifting base, a top lifting frame slidably arranged on the top lifting base, and a top lifting driver fixed to the top lifting base and driving the top lifting frame to slide up and down on the top lifting base. The turnover tray is provided with a through hole perpendicular to the top opening. The top lifting driver drives the top lifting frame to rise through the through hole and the top opening to abut against the top plate and lift the top plate, so that the top plate slides along the inner wall of the accommodation cavity, and the circuit board carried on the top plate is exposed from the accommodation cavity, facilitating the manipulator to pick up the external circuit board exposed from the accommodation cavity.

[0017] The present invention also provides a method for loading and unloading boards, including the above double-layer cartridge jig lifting type exchange loading and unloading board equipment. The loading and unloading steps are as follows:

[0018] Step 1: The carrier vehicle carries a turnover tray loaded with an external circuit board or an empty cartridge jig into the conveying channel. The two lifting drivers drive their respective lifting frames to rise, so that the two first lifting conveyor belts lift the turnover tray loaded with an external circuit board or an empty cartridge jig and rise with the respective lifting frames. The carrier vehicle exits the conveying channel.

[0019] Step 2: The two first lifting conveyor belts rise to be flush with the material loading and unloading conveying device. The two lifting drivers stop. The two first lifting conveyor belts simultaneously convey the turnover tray loaded with an external circuit board or an empty cartridge jig to the material loading and unloading conveying device, so that the turnover tray loaded with an external circuit board or an empty cartridge jig is placed on the material loading and unloading conveying device, and the cartridge jig loaded with an external circuit board or an empty one is in the material loading and unloading station, facilitating the manipulator to perform the board loading and unloading operation.

[0020] Step 3: During the operation of the manipulator for loading and unloading materials, the two lifting drivers drive their respective lifting frames to descend and reset. The two first lifting conveyor belts descend and reset along with their respective lifting frames. The carrier vehicle then carries the turnover tray loaded with the external circuit board or the empty cassette fixture into the conveying channel. The two lifting drivers drive their respective lifting frames to rise, so that the two first lifting conveyor belts lift the turnover tray loaded with the external circuit board or the empty cassette fixture and rise along with their respective lifting frames. The two second lifting conveyor belts rise to be flush with the loading and unloading conveying device. The two lifting drivers stop the machine and wait for the manipulator to complete the operation of loading and unloading the board;

[0021] Step 4: After the manipulator completes the operation of loading and unloading materials, the loading and unloading conveying device conveys the turnover tray loaded with the external circuit board or the empty cassette fixture to the two second lifting conveyor belts. After the two second lifting conveyor belts receive the turnover tray loaded with the external circuit board or the empty cassette fixture, the two lifting drivers drive their respective lifting frames to descend, so that the two first lifting conveyor belts are flush with the loading and unloading conveying device again. The two first lifting conveyor belts convey the turnover tray loaded with the external circuit board or the empty cassette fixture to the loading and unloading conveying device again, so that the turnover tray loaded with the external circuit board or the empty cassette fixture is in the loading and unloading station again, which is convenient for the manipulator to perform the operation of loading and unloading the board and reduces the downtime waiting for the turnover tray loaded with the external circuit board or the empty cassette fixture to be conveyed to the loading and unloading board station;

[0022] Step 5: The two lifting drivers drive their respective lifting frames to continue descending, so that the two second lifting conveyor belts receiving the turnover tray loaded with the external circuit board or the empty cassette fixture descend along with their respective lifting frames. When the turnover tray loaded with the external circuit board or the empty cassette fixture is pressed on the carrier vehicle under the action of gravity, the turnover tray loaded with the external circuit board or the empty cassette fixture is separated from the two second lifting conveyor belts. The two lifting drivers stop the machine. The carrier vehicle receives the turnover tray loaded with the external circuit board or the empty cassette fixture and exits the conveying channel to convey the turnover tray loaded with the external circuit board or the empty cassette fixture to the next production line. The two lifting drivers drive their respective lifting frames to descend, so that the two first lifting conveyor belts and the two second lifting conveyor belts are reset;

[0023] Step 6: Repeat the above steps 3 to 5 to exchange and convey the turnover tray loaded with the external circuit board or the empty cassette fixture between the loading and unloading conveying device and the carrier vehicle.

[0024] Advantages of the present invention: The vehicle of the present invention conveys the turnover tray to the loading and unloading conveying device through the first lifting conveyor belt, and the loading and unloading conveying device conveys the turnover tray to the vehicle through the second lifting conveyor belt, enabling the turnover tray carrying the material box fixture to be exchanged and conveyed between the loading and unloading conveying device and the vehicle, reducing the downtime of the loading and unloading machine, and improving the efficiency of loading and unloading circuit boards. Brief Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of the present invention.

[0026] Figure 2 It is a schematic structural diagram of the first lifting conveyor belt of the present invention conveying the turnover tray carrying the material box fixture to the loading and unloading conveying device.

[0027] Figure 3 It is a schematic structural diagram of the separated state of the vehicle and the turnover tray of the present invention.

[0028] Figure 4 It is a schematic structural diagram of the conveying device, the positioning and adjusting mechanism and the loading and unloading conveying device of the present invention.

[0029] Figure 5 It is a schematic structural diagram of the conveying device and the positioning and adjusting mechanism of the present invention.

[0030] Figure 6 It is a schematic structural diagram of the disassembled state of the conveying device and the positioning and adjusting mechanism of the present invention.

[0031] Figure 7 It is a schematic structural diagram of the disassembled state of the loading and unloading conveying device and the ejecting device of the present invention.

[0032] Figure 8 It is a schematic structural diagram of the disassembled state of the material box fixture of the present invention.

[0033] Reference numerals include:

[0034] 1. Cartridge fixture; 11. Cartridge body; 12. Accommodation cavity; 13. Pushing plate; 14. Pushing opening; 2. Carrier vehicle; 21. Transfer tray; 22. L-shaped positioning body; 23. Positioning hole; 24. Positioning post; 25. Limiting opening; 26. Through hole; 3. Lifting device; 31. Lifting conveyor belt; 32. Lifting driver; 33. Lifting frame body; 34. First lifting conveyor belt; 35. Second lifting conveyor belt; 36. First driving wheel; 37. First driven wheel; 38. First conveyor belt body; 39. First driver; 4. Feeding and discharging conveying device; 41. Support frame; 42. Feeding and discharging conveyor belt; 421. Second driving wheel; 422. Second driven wheel; 423. Second conveyor belt body; 424. Second driver; 43. Limiting plate; 44. Jacking device; 441. Jacking base; 442. Floating jacking table; 443. Jacking driver; 45. Clamping device; 451. Fixed frame; 452. Clamping plate; 453. Clamping driver; 454. Limiting member; 5. Conveying device; 51. Support; 52. Conveying roller group; 521. Front roller group; 5211. Front conveying shaft; 5212. Front magnetic gear; 522. Rear roller group; 5221. Rear conveying shaft; 5222. Rear magnetic gear; 53. Conveying driver; 531. Front driver; 5311. Front magnetic gear rod; 532. Rear driver; 5321. Rear magnetic gear rod; 54. Limiting member; 55. Separating partition; 6. Positioning and adjusting mechanism; 61. Rack; 62. Adjusting driver; 63. Adjusting member; 631. Connecting support; 632. Adjusting rod; 7. Pushing device; 71. Pushing base; 72. Pushing frame; 73. Pushing driver. Detailed implementation manners

[0035] The present invention will be described in detail below with reference to the accompanying drawings.

[0036] As Figures 1 to 8 shown, the double-layer cartridge fixture lifting type exchange and feeding and discharging board machine compatible with a trolley and an AGV of the present invention includes a circuit board cartridge fixture 1 for carrying an external one, a manipulator for feeding and discharging an external circuit board to and from the cartridge fixture 1, a carrier vehicle 2, a lifting device 3, and a feeding and discharging conveying device 4. The carrier vehicle 2 is a trolley and an AGV car. The carrier vehicle 2 is provided with a transfer tray 21 for carrying the cartridge fixture 1, facilitating the simultaneous conveyance of a plurality of cartridge fixtures 1 and improving the conveyance efficiency of the cartridge fixture 1.

[0037] The lifting device 3 is arranged on one side of the loading and unloading conveying device 4. The lifting device 3 is used to transport the turnover tray 21 up and down between the carrier vehicle 2 and the loading and unloading conveying device 4. The loading and unloading conveying device 4 is a loading and unloading board station and is used to receive or convey the turnover tray 21 transported by the lifting device 3. Through the turnover tray 21, the cartridge fixture 1 with an external circuit board or the empty cartridge fixture 1 can be conveniently conveyed to the loading and unloading conveying device 4, i.e., the loading and unloading board station. The manipulator is arranged between the loading and unloading conveying device 4 and the external processing production line, facilitating the manipulator to pick up the external circuit board from the cartridge fixture 1 with an external circuit board at the loading and unloading board station and place it on the processing production line, or pick up the circuit board from the processing production line and put it into the empty cartridge fixture 1 at the loading and unloading board station.

[0038] There are two lifting devices 3. The two lifting devices 3 are arranged side by side at intervals to form a conveying channel for the carrier vehicle 2 to enter and exit, facilitating the entry and exit of the carrier vehicle 2. Each lifting device 3 includes a lifting conveyor belt 31 and a lifting driver 32. The lifting driver 32 is a linear lifter. The lifting conveyor belt 31 includes a lifting frame 33, a first lifting conveyor belt 34, and a second lifting conveyor belt 35. The first lifting conveyor belt 34 and the second lifting conveyor belt 35 are perpendicular to each other and are relatively rotatably arranged on the lifting frame 33, so that the first lifting conveyor belt 34 and the second lifting conveyor belt 35 form a double-layer structure. The first lifting conveyor belt 34 is located above the second lifting conveyor belt 35, facilitating the exchange and conveyance of the turnover tray 21 between the loading and unloading conveying device 4 and the carrier vehicle 2. The lifting driver 32 is used to drive the lifting frame 33 to lift and lower. The first lifting conveyor belt 34 and the second lifting conveyor belt 35 follow the lifting and lowering of the lifting frame 33, so that the first lifting conveyor belt 34 and the second lifting conveyor belt 35 are lifted and lowered between the loading and unloading conveying device 4 and the carrier vehicle 2. The carrier vehicle 2 conveys the turnover tray 21 to the loading and unloading conveying device 4 through the first lifting conveyor belt 34, and the loading and unloading conveying device 4 conveys the turnover tray 21 to the carrier vehicle 2 through the second lifting conveyor belt 35, enabling the turnover tray 21 carrying the cartridge fixture 1 to be exchanged and conveyed between the loading and unloading conveying device 4 and the carrier vehicle 2, reducing the downtime of the loading and unloading board machine and improving the efficiency of loading and unloading circuit boards.

[0039] In actual use, the manipulator is a two-axis suction cup manipulator, including a horizontally arranged linear cylinder module, a vertically arranged linear cylinder module, and a suction cup. The manipulator moves left and right through the horizontally arranged linear cylinder module, moves up and down through the vertically arranged linear cylinder module, and sucks the external circuit board through the suction cup. The suction cup is connected to the horizontally arranged linear cylinder module through the vertically arranged linear cylinder module, so that the suction cup moves left and right with the horizontally arranged linear cylinder module and moves up and down with the vertically arranged linear cylinder module on the horizontally arranged linear cylinder module, facilitating the manipulator to pick up and place the external circuit board in the cartridge fixture 1.

[0040] When receiving the circuit board, the carrier vehicle 2 moves the turnover tray 21 carrying the empty cassette jig 1 into the conveying channel. The two lifting drivers 32 drive their respective lifting frames 33 to rise, causing the two first lifting conveyor belts 34 to jointly lift the turnover tray 21 carrying the empty cassette jig 1 and follow their respective lifting frames 33 to rise. When the two first lifting conveyor belts 34 rise to the same level as the loading and unloading conveying device 4, the two lifting drivers 32 stop. The two first lifting conveyor belts 34 simultaneously convey the turnover tray 21 carrying the empty cassette jig 1 to the loading and unloading conveying device 4, placing the turnover tray 21 carrying the empty cassette jig 1 on the loading and unloading conveying device 4, realizing the placement of the turnover tray 21 carrying the empty cassette jig 1 at the circuit board receiving and placing station. The external circuit board is placed into the cassette jig 1 at the circuit board receiving and placing station by the manipulator. During the process of the manipulator placing the external circuit board into the cassette jig 1 at the circuit board receiving and placing station, the carrier vehicle 2 exits the conveying channel. At the same time, the two lifting drivers 32 drive their respective lifting frames 33 to descend, resetting the two first lifting conveyor belts 34 and the two second lifting conveyor belts 35, completing the first time the carrier vehicle 2 conveys the turnover tray 21 carrying the empty cassette jig 1 to the loading and unloading conveying device 4 through the first lifting conveyor belt 34.

[0041] The carrier vehicle 2 moves the turnover tray 21 carrying the empty cassette jig 1 into the conveying channel again. The two lifting drivers 32 drive their respective lifting frames 33 to rise, causing the two first lifting conveyor belts 34 to lift the turnover tray 21 carrying the empty cassette jig 1 and follow their respective lifting frames 33 to rise. When the two second lifting conveyor belts 35 rise to the same level as the loading and unloading conveying device 4, the two lifting drivers 32 temporarily stop. The loading and unloading conveying device 4 conveys the turnover tray 21 carrying the cassette jig 1 with the external circuit board to the two second lifting conveyor belts 35, placing the turnover tray 21 carrying the cassette jig 1 with the external circuit board on the two second lifting conveyor belts 35. The two lifting drivers 32 drive their respective lifting frames 33 to descend again. When the two first lifting conveyor belts 34 descend to the same level as the loading and unloading conveying device 4, the two lifting drivers 32 stop. The two first lifting conveyor belts 34 convey the turnover tray 21 carrying the empty cassette jig 1 to the loading and unloading conveying device 4 again, placing the turnover tray 21 carrying the empty cassette jig 1 on the loading and unloading conveying device 4, completing the second time the carrier vehicle 2 conveys the turnover tray 21 carrying the empty cassette jig 1 to the loading and unloading conveying device 4 through the first lifting conveyor belt 34, facilitating the manipulator to place the external circuit board into the cassette jig 1 at the circuit board receiving and placing station, reducing the downtime of the circuit board receiving and placing machine, and improving the efficiency of receiving the circuit board.

[0042] During the process of the manipulator placing an external circuit board into the cartridge fixture 1, the two lifting drivers 32 drive their respective lifting frames 33 to descend, so that the turnover tray 21 of the cartridge fixture 1 with the external circuit board carried on the two second lifting conveyor belts 35 is placed on the carrier vehicle 2, and the carrier vehicle 2 exits the conveying channel with the turnover tray 21 of the cartridge fixture 1 carrying the external circuit board, realizing that the loading and unloading conveying device 4 conveys the turnover tray 21 of the cartridge fixture 1 carrying the external circuit board to the carrier vehicle 2 through the second lifting conveyor belt 35. Repeating this process, the carrier vehicle 2 conveys the turnover tray 21 to the loading and unloading conveying device 4 through the first lifting conveyor belt 34, and the loading and unloading conveying device 4 conveys the turnover tray 21 to the carrier vehicle 2 through the second lifting conveyor belt 35, enabling the turnover tray 21 carrying the cartridge fixture 1 to be exchanged and conveyed between the loading and unloading conveying device 4 and the carrier vehicle 2. Similarly, the operation of placing the circuit board can also be completed, that is, the carrier vehicle 2 conveys the turnover tray 21 of the cartridge fixture 1 carrying the external circuit board to the loading and unloading conveying device 4 through the first lifting conveyor belt 34, and the loading and unloading conveying device 4 conveys the turnover tray 21 of the cartridge fixture 1 with an empty cartridge to the carrier vehicle 2 through the second lifting conveyor belt 35, ultimately reducing the downtime of the board loading and unloading machine and improving the efficiency of loading and unloading circuit boards.

[0043] The first lifting conveyor belt 34 and the second lifting conveyor belt 35 in this embodiment both include a first driving wheel 36, a first driven wheel 37, a first conveyor belt body 38, and a first driver 39. The first driver 39 is a reduction motor. The first driving wheel 36 and the first driven wheel 37 both rotate relatively on one side of the lifting frame 33. The first conveyor belt body 38 is sleeved between the first driving wheel 36 and the first driven wheel 37. The first driver 39 is fixed to the lifting frame 33 and drives the first driving wheel 36 to rotate, thereby driving the first driven wheel 37 and the first conveyor belt body 38 to rotate, enabling the first lifting conveyor belt 34 and the second lifting conveyor belt 35 to convey the turnover tray 21.

[0044] In actual use, the turnover tray 21 is provided with L-shaped positioning bodies 22 for fixing the cartridge fixture 1. The number of L-shaped positioning bodies 22 is at least two, and the two L-shaped positioning bodies 22 are arranged diagonally, restricting the cartridge fixture 1 within the two diagonally arranged L-shaped positioning bodies 22, and fixing the cartridge fixture 1 to the turnover tray 21.

[0045] In actual use, the turnover tray 21 is provided with positioning holes 23 for positioning with the carrier vehicle 2. The carrier vehicle 2 is provided with positioning posts 24 corresponding to the positioning holes 23. When the turnover tray 21 is carried on the carrier vehicle 2, the positioning posts 24 are inserted into the positioning holes 23, positioning and fixing the turnover tray 21 to the carrier vehicle 2, making the fixation between the carrier vehicle 2 and the turnover tray 21 more precise.

[0046] On one side of the material feeding and discharging conveying device 4 of this embodiment away from the lifting device 3, there is a conveying device 5 spliced to an external processing production line. The conveying device 5 includes a bracket 51, a conveying roller group 52 rotatably arranged on the bracket 51, a conveying driver 53 for driving the conveying roller group 52 to rotate, and a limiting member 54 fixed to the bracket 51. The conveying roller group 52 is used to carry and convey external circuit boards, so that the external circuit boards on the external processing production line are conveyed to the limiting member 54 through the conveying roller group 52, facilitating the manipulator to pick up the external circuit boards from the material box fixture 1 containing the external circuit boards and place them on the processing production line or take the circuit boards from the processing production line and put them into the empty material box fixture 1.

[0047] The conveying device 5 is provided with a positioning and adjusting mechanism 6 for adjusting the position of the external circuit board. The positioning and adjusting mechanism 6 includes a rack 61 fixedly arranged at one end of the bracket 51 close to the limiting member 54, an adjusting driver 62 meshing and driving with the rack 61, and an adjusting member 63 fixed to the adjusting driver 62. The adjusting driver 62 is a reduction motor. The adjusting member 63 protrudes into the gap of the conveying roller group 52, so that the adjusting member 63 protrudes from the top conveying end of the conveying roller group 52, facilitating the adjusting member 63 to abut against the external circuit board on the conveying roller group 52. The rack 61 is arranged parallel to the conveying roller group 52 up and down, so that the rack 61 extends along the gap of the conveying roller group 52. When the adjusting driver 62 meshes and moves along the length direction of the rack 61, the adjusting member 63 moves parallel to the gap of the conveying roller group 52 along with the movement of the adjusting driver 62.

[0048] During use, the conveying driver 53 drives the conveying roller group 52 to rotate to convey the external circuit boards on the external processing production line to abut against the limiting member 54 through the conveying roller group 52. The adjusting driver 62 meshes and moves along the rack 61, and the adjusting member 63 moves parallel to the gap of the conveying roller group 52 against the side of the external circuit board along with the movement of the adjusting driver 62, realizing the position adjustment of the external circuit board abutting against the limiting member 54 by the adjusting member 63, making the external circuit board straighten and abut between the limiting member 54 and the bracket 51, preventing the circuit board from being conveyed obliquely on the conveying roller group 52, facilitating the manipulator to clamp the circuit board and put it into the empty material box fixture 1, and improving the efficiency of conveying the circuit board.

[0049] The adjusting member 63 of this embodiment includes a connection support 631 fixedly connected to the adjusting driver 62. An adjusting rod 632 is fixedly arranged on the connection support 631. One end of the adjusting rod 632 protrudes into the gap of the conveying roller group 52. When the adjusting driver 62 meshes and moves along the rack 61, the adjusting rod 632 moves parallel to the gap of the conveying roller group 52 against the side of the external circuit board along with the movement of the adjusting driver 62, realizing the position adjustment of the external circuit board abutting against the limiting member 54 by the adjusting member 63.

[0050] The conveying roller set 52 of this embodiment includes a front roller set 521 and a rear roller set 522. The front roller set 521 and the rear roller set 522 are respectively arranged front and rear in a rolling manner on the bracket 51, such that the rear roller set 522 is disposed between the front roller set 521 and the limiting member 54. The external circuit board enters the conveying roller set 52 from the external processing production line and is conveyed along the front roller set 521 and the rear roller set 522 to abut against the limiting member 54. The conveying driver 53 includes a front driver 531 and a rear driver 532. Both the front driver 531 and the rear driver 532 are reduction motors. The front driver 531 is in transmission connection with the front roller set 521, and the rear driver 532 is in transmission connection with the rear roller set 522, such that the front driver 531 drives the front roller set 521 and the rear driver 532 drives the rear roller set 522, enabling separate control of the front roller set 521 and the rear roller set 522, facilitating the conveying control of the external circuit board and making the conveying and positioning of the external circuit board more accurate.

[0051] The front driver 531 of this embodiment is provided with a front magnetic gear rod 5311 that rolls on the bracket 51. The front roller set 521 includes a plurality of front conveying shafts 5211 arranged side by side at intervals. Each front conveying shaft 5211 is provided with a front magnetic gear 5212. The front driver 531 drives the front magnetic gear rod 5311 and the front magnetic gear 5212 to be in non-contact magnetic transmission connection through the cooperation of a belt and a pulley, making the rolling operation of the front roller set 521 quieter.

[0052] The rear driver 532 is provided with a rear magnetic gear rod 5321 that rolls on the bracket 51. The rear roller set 522 includes a plurality of rear conveying shafts 5221 arranged side by side at intervals. Each rear conveying shaft 5221 is provided with a rear magnetic gear 5222. The rear driver 532 drives the rear magnetic gear rod 5321 and the rear magnetic gear 5222 to be in non-contact magnetic transmission connection through the cooperation of a belt and a pulley, making the rolling operation of the rear roller set 522 quieter.

[0053] The bracket 51 of this embodiment is fixedly provided with a plurality of dividing strips 55 that divide the front roller set 521. The front roller set 521 is divided into multiple columns of conveying channels for conveying the external circuit board by the dividing strips 55. The rear roller set 522 is provided with multiple groups and is distributed corresponding to each conveying channel, enabling the conveying roller set 52 to convey the external circuit board in columns simultaneously and improving the conveying efficiency of the external circuit board.

[0054] The material loading and unloading conveying device 4 of this embodiment includes a support frame 41 and a material loading and unloading conveyor belt 42 that is relatively rotatably arranged on the support frame 41. There are two material loading and unloading conveyor belts 42. A limiting plate 43 is arranged between the two material loading and unloading conveyor belts 42. By abutting the limiting plate 43 against the turnover tray 21, the turnover tray 21 is restricted to be placed on the material loading and unloading conveying device 4.

[0055] Each of the unwinding and retracting conveyor belts 42 includes a second driving wheel 421, a second driven wheel 422, a second conveyor belt body 423, and a second driver 424, wherein the second driver 424 is a reduction motor. The second driving wheel 421 and the second driven wheel 422 rotate relative to each other on one side of the support frame 41, the second conveyor belt body 423 is sleeved between the second driving wheel 421 and the second driven wheel 422, the second driver 424 is fixed to the support frame 41 and drives the second driving wheel 421 to rotate, thereby driving the second driven wheel 422 and the second conveyor belt body 423 to rotate, so that the unwinding and retracting conveyor belt 42 can realize the conveyance of the turnover pallet 21.

[0056] In this embodiment, a lifting device 44 is arranged between the two material collecting and unloading conveyor belts 42, and the lifting device 44 is used to lift the turnover tray 21 carrying the material box jig 1 and separate it from the material collecting and unloading conveyor belt 42, so as to prevent the turnover tray 21 carrying the material box jig 1 from being placed on the material collecting and unloading conveyor belt 42 for a long time, thereby improving the stability of the robot arm in collecting and unloading the external circuit board from the material box jig 1 on the turnover tray 21.

[0057] The lifting device 44 includes a lifting base 441, a floating lifting platform 442 slidably disposed on the lifting base 441, and a lifting driver 443 fixed to the lifting base 441 and driving the floating lifting platform 442 to rise and fall. The lifting driver 443 is a linear cylinder. The lifting driver 443 drives the floating lifting platform 442 to rise and abut against the bottom of the turnover pallet 21, thereby lifting the turnover pallet 21 and separating the turnover pallet 21 from the material collection and unloading conveyor belt 42; similarly, the lifting driver 443 drives the floating lifting platform 442 to descend, so that the bottom of the turnover pallet 21 abuts against the material collection and unloading conveyor belt 42 again, thereby resetting the turnover pallet 21 and the material collection and unloading conveyor belt 42, so that the material collection and unloading conveyor belt 42 can transport the turnover pallet 21.

[0058] In this embodiment, clamping devices 45 are provided on both sides of the support frame 41. The two clamping devices 45 are arranged opposite to each other, so as to facilitate clamping of the turnover pallet 21 lifted by the lifting device 44 and separated from the material collection and release conveyor belt 42. Each clamping device 45 includes a fixed frame 451, a clamping plate 452 and a clamping driver 453. The clamping driver 453 is a linear cylinder. The clamping driver 453 is fixed to the fixed frame 451 and drives the two clamping plates 452 to approach to clamp the turnover pallet 21 lifted by the lifting device 44, so that the turnover pallet 21 is fixed, so as to facilitate the manipulator to collect and release the external circuit board to the material box fixture 1 on the turnover pallet 21. The clamping driver 453 drives the two clamping plates 452 to move away from each other to release the turnover pallet 21 lifted by the lifting device 44, so as to facilitate the material collection and release conveyor belt 42 to convey the turnover pallet 21.

[0059] In actual use, limiting openings 25 are set on both sides of the turnover pallet 21 corresponding to the clamping device 45, and the clamping device 45 is provided with a limiting member 454, which is fixed to the clamping plate 452. When the two clamping plates 452 are close to clamp the turnover pallet 21, the limiting member 454 abuts against the limiting opening 25, so that the turnover pallet 21 is restricted on the clamping plate 452, thereby improving the stability of the clamping device 45 in clamping the turnover pallet 21.

[0060] The material box fixture 1 of the present embodiment includes a box body 11, a receiving cavity 12 is arranged inside the box body 11, a lifting plate 13 for carrying an external circuit board is arranged in the receiving cavity 12, and a lifting port 14 is arranged below the box body 11, through which the lifting plate 13 can be lifted up to slide along the inner wall of the receiving cavity 12, so that the circuit board outside the lifting plate 13 is exposed to the receiving cavity 12, so that the robot can absorb the circuit board exposed outside the receiving cavity 12, improve the convenience of the robot to absorb the circuit board outside the receiving cavity 12, reduce the telescopic stroke of the robot to absorb the external circuit board, and improve the efficiency of the robot to absorb the external circuit board. Similarly, the efficiency of the robot in placing the external circuit board can also be improved.

[0061] A lifting device 7 is arranged below the material collection and delivery conveying device 4 of this embodiment. The lifting device 7 includes a lifting base 71, a lifting frame 72 slidably arranged on the lifting base 71, and a lifting driver 73 fixed to the lifting base 71 and driving the lifting frame 72 to slide up and down on the lifting base 71. The lifting driver 73 is a linear reduction motor, and the lifting driver 73 is transmission-connected with the lifting frame 72 so that the lifting driver 73 drives the lifting frame 72 to rise or fall.

[0062] The turnover tray 21 is provided with a through hole 26 which is relatively perpendicular to the ejection port 14. The ejection driver 73 drives the ejection frame 72 to rise through the through hole 26 and the ejection port 14 to abut against the ejection plate 13 and lift up the ejection plate 13, so that the ejection plate 13 slides along the inner wall of the accommodating cavity 12, so that the circuit board carried by the ejection plate 13 is exposed from the accommodating cavity 12, which is convenient for the robot to absorb the circuit board exposed outside the accommodating cavity 12.

[0063] The present invention also provides a plate collection and release method, including the above-mentioned double-layer material box fixture lifting exchange plate collection and release device, and the collection and release steps are as follows:

[0064] Step 1: The carrier 2 carries the turnover tray 21 with the external circuit board or the empty material box jig 1 into the conveying channel, and the two lifting drivers 32 drive the respective lifting frames 33 to rise, so that the two first lifting conveyor belts 34 lift the turnover tray 21 with the external circuit board or the empty material box jig 1 and rise with the respective lifting frames 33, and the carrier 2 exits the conveying channel;

[0065] Step 2: The two first lifting conveyor belts 34 rise to be flush with the loading and unloading conveyor device 4. The two lifting drives 32 stop operating. The two first lifting conveyor belts 34 simultaneously convey the turnover trays 21 carrying the external circuit boards or empty fixture carriers 1 to the loading and unloading conveyor device 4, so that the turnover trays 21 carrying the external circuit boards or empty fixture carriers 1 are placed on the loading and unloading conveyor device 4, and the external circuit boards or empty fixture carriers 1 are in the loading and unloading workstations, facilitating the manipulator to perform the circuit board loading and unloading operations;

[0066] Step 3: During the circuit board loading and unloading operation of the manipulator, the two lifting drives 32 drive their respective lifting frames 33 to descend and reset. The two first lifting conveyor belts 34 descend and reset as their respective lifting frames 33 descend. The carrier vehicle 2 then carries the turnover trays 21 carrying the external circuit boards or empty fixture carriers 1 into the conveying channel. The two lifting drives 32 drive their respective lifting frames 33 to rise, so that the two first lifting conveyor belts 34 lift the turnover trays 21 carrying the external circuit boards or empty fixture carriers 1 and rise as their respective lifting frames 33 rise. The two second lifting conveyor belts 35 rise to be flush with the loading and unloading conveyor device 4. The two lifting drives 32 stop operating and wait for the manipulator to complete the circuit board loading and unloading operation;

[0067] Step 4: After the manipulator completes the circuit board loading and unloading operation, the loading and unloading conveyor device 4 conveys the turnover trays 21 carrying the external circuit boards or empty fixture carriers 1 to the two second lifting conveyor belts 35. After the two second lifting conveyor belts 35 receive the turnover trays 21 carrying the external circuit boards or empty fixture carriers 1, the two lifting drives 32 drive their respective lifting frames 33 to descend, so that the two first lifting conveyor belts 34 are again flush with the loading and unloading conveyor device 4. The two first lifting conveyor belts 34 convey the turnover trays 21 carrying the external circuit boards or empty fixture carriers 1 to the loading and unloading conveyor device 4 again, so that the external circuit boards or empty fixture carriers 1 are again in the loading and unloading workstations, facilitating the manipulator to perform the circuit board loading and unloading operations and reducing the downtime waiting for the turnover trays 21 carrying the external circuit boards or empty fixture carriers 1 to be conveyed to the circuit board loading and unloading workstations;

[0068] Step 5: The two lifting drivers 32 drive their respective lifting frames 33 to continue descending, so that the two second lifting conveyor belts 35 carrying the turnover trays 21 that receive and carry the external circuit boards or empty cartridge fixtures 1 descend with their respective lifting frames 33. When the turnover trays 21 carrying the external circuit boards or empty cartridge fixtures 1 are pressed on the carrier vehicle 2 under the action of gravity, the turnover trays 21 carrying the external circuit boards or empty cartridge fixtures 1 are separated from the two second lifting conveyor belts 35. The two lifting drivers 32 stop the machine. The carrier vehicle 2 receives the turnover trays 21 carrying the external circuit boards or empty cartridge fixtures 1 and exits the conveying channel to convey the turnover trays 21 carrying the external circuit boards or empty cartridge fixtures 1 to the next production line. The two lifting drivers 32 drive their respective lifting frames 33 to descend, so that the two first lifting conveyor belts 34 and the two second lifting conveyor belts 35 are reset;

[0069] Step 6: Repeat the above Steps 3 to 5, so that the turnover trays 21 carrying the external circuit boards or empty cartridge fixtures 1 are alternately conveyed between the loading and unloading conveying device 4 and the carrier vehicle 2.

[0070] The above content is only a preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. Double-layer material box fixture lifting type exchange receiving and discharging board equipment, Characterized in that: It includes a fixture (1) for carrying an external circuit board material box, a manipulator for receiving and discharging an external circuit board to / from the material box fixture (1), a carrier vehicle (2), a lifting device (3), and a receiving and discharging material conveying device (4). The carrier vehicle (2) is a handcart or an AGV cart. The carrier vehicle (2) is provided with a turnover tray (21), and the turnover tray (21) is used for carrying the material box fixture (1). The lifting device (3) is arranged on one side of the receiving and discharging material conveying device (4). The lifting device (3) is used for transporting the turnover tray (21) up and down between the carrier vehicle (2) and the receiving and discharging material conveying device (4). The position of the receiving and discharging material conveying device (4) is the receiving and discharging board station. The receiving and discharging material conveying device (4) is used for receiving or conveying the turnover tray (21) transported by the lifting device (3). The manipulator is arranged between the receiving and discharging material conveying device (4) and an external processing production line. The number of the lifting devices (3) is two. The two lifting devices (3) are arranged in parallel at intervals to form a conveying channel for the carrier vehicle (2) to enter and exit. Each lifting device (3) includes a lifting conveyor belt (31) and a lifting driver (32). The lifting conveyor belt (31) includes a lifting frame body (33), a first lifting conveyor belt (34), and a second lifting conveyor belt (35). The first lifting conveyor belt (34) and the second lifting conveyor belt (35) are perpendicular to each other and are relatively rotatably arranged on the lifting frame body (33). The lifting driver (32) is used for driving the lifting frame body (33) to lift, so that the first lifting conveyor belt (34) and the second lifting conveyor belt (35) rise or fall between the receiving and discharging material conveying device (4) and the carrier vehicle (2). The carrier vehicle (2) conveys the turnover tray (21) to the receiving and discharging material conveying device (4) through the first lifting conveyor belt (34). The receiving and discharging material conveying device (4) conveys the turnover tray (21) to the carrier vehicle (2) through the second lifting conveyor belt (35), so that the turnover tray (21) carrying the material box fixture (1) is exchanged and conveyed between the receiving and discharging material conveying device (4) and the carrier vehicle (2). On one side of the receiving and discharging material conveying device (4) away from the lifting device (3), there is a conveying device (5) spliced with an external processing production line. The conveying device (5) includes a bracket (51), a conveying roller group (52) rotatably arranged on the bracket (51), a conveying driver (53) for driving the conveying roller group (52) to rotate, and a limiting member (54) fixed to the bracket (51). The conveying roller group (52) is used for carrying and conveying an external circuit board. The conveying device (5) is provided with a positioning and adjusting mechanism (6) for adjusting the position of an external circuit board. The positioning and adjusting mechanism (6) includes a rack (61) fixedly arranged at one end of the bracket (51) close to the limiting member (54), an adjusting driver (62) meshing and driving with the rack (61), and an adjusting member (63) fixed to the adjusting driver (62). The adjusting member (63) protrudes into the gap of the conveying roller group (52), and the rack (61) is arranged parallel to the conveying roller group (52) vertically and horizontally. The adjusting member (63) includes a connecting support (631) fixedly connected to the adjusting driver (62). An adjusting rod (632) is fixedly arranged on the connecting support (631), and one end of the adjusting rod (632) protrudes into the gap of the conveying roller group (52). The conveying roller group (52) includes a front roller group (521) and a rear roller group (522). The front roller group (521) and the rear roller group (522) are respectively arranged front and rear in a rolling manner on the bracket (51). The conveying driver (53) includes a front driver (531) and a rear driver (532). The front driver (531) is in transmission connection with the front roller group (521), and the rear driver (532) is in transmission connection with the rear roller group (522). The rear driver (532) is provided with a rear magnetic gear rod (5321) rolling on the bracket (51). The rear roller group (522) includes a plurality of rear conveying shafts (5221) arranged side by side at intervals. Each rear conveying shaft (5221) is provided with a rear magnetic gear (5222).

2. The double-layer magazine jig lifting type exchange and storage board device according to claim 1, characterized in that: Both the first lifting conveyor belt (34) and the second lifting conveyor belt (35) include a first driving wheel (36), a first driven wheel (37), a first conveyor belt body (38), and a first driver (39). The first driving wheel (36) and the first driven wheel (37) are respectively rotated oppositely on one side of the lifting frame body (33). The first conveyor belt body (38) is sleeved between the first driving wheel (36) and the first driven wheel (37). The first driver (39) is fixed to the lifting frame body (33) and drives the first driving wheel (36) to rotate, thereby driving the first driven wheel (37) and the first conveyor belt body (38) to rotate.

3. The double-layer magazine jig lifting type exchange and storage board device according to claim 1, characterized in that: The conveying driver (53) drives the conveying roller set (52) to roll and convey an external circuit board against the limiting member (54). The adjusting driver (62) meshes and moves along the rack (61), and the adjusting member (63) moves parallel to the gap of the conveying roller set (52) against the side of the external circuit board as the adjusting driver (62) moves, so as to adjust the position of the external circuit board against the limiting member (54), and make the external circuit board straight and against the limiting member (54) and the bracket (51).

4. The double-layer cassette jig lifting type exchange board receiving and discharging device according to claim 3, characterized in that: The bracket (51) is fixedly provided with a plurality of dividing partition strips (55) for dividing the front roller set (521). The front roller set (521) is divided into multiple conveying channels for conveying external circuit boards by the dividing partition strips (55). The rear roller set (522) is provided with multiple groups and is distributed corresponding to each conveying channel, so that the conveying roller set (52) conveys external circuit boards in multiple columns simultaneously.

5. The double-layer cassette jig lifting type exchange board receiving and discharging device according to claim 1, characterized in that: The board receiving and discharging conveying device (4) includes a support frame (41) and a board receiving and discharging conveyor belt (42) rotatably arranged relative to the support frame (41). There are two board receiving and discharging conveyor belts (42), and a limiting plate (43) is arranged between the two board receiving and discharging conveyor belts (42); Each board receiving and discharging conveyor belt (42) includes a second driving wheel (421), a second driven wheel (422), a second conveyor belt body (423) and a second driver (424). The second driving wheel (421) and the second driven wheel (422) are both rotatably arranged on one side of the support frame (41). The second conveyor belt body (423) is sleeved between the second driving wheel (421) and the second driven wheel (422). The second driver (424) is fixed on the support frame (41) and drives the second driving wheel (421) to rotate, so as to drive the second driven wheel (422) and the second conveyor belt body (423) to rotate.

6. The double-layer cassette jig lifting type exchange board receiving and discharging device according to claim 5, characterized in that: A lifting device (44) is arranged between the two board receiving and discharging conveyor belts (42). The lifting device (44) is used to lift the turnover tray (21) carrying the cassette jig (1) and separate it from the board receiving and discharging conveyor belt (42). The lifting device (44) includes a lifting base (441), a floating lifting table (442) slidably arranged on the lifting base (441) and a lifting driver (443) fixed on the lifting base (441) and driving the floating lifting table (442) to lift up and down.

7. The double-layer cassette jig lifting type exchange board receiving and discharging device according to claim 6, characterized in that: Clamping devices (45) are provided on both sides of the support frame (41). The two clamping devices (45) are arranged oppositely. Each clamping device (45) includes a fixed frame (451), a clamping plate (452), and a clamping driver (453). The clamping driver (453) is fixed to the fixed frame (451) and drives the two clamping plates (452) to approach each other to clamp the turnover tray (21) lifted by the lifting device (44), or drives the two clamping plates (452) to move away from each other to release the turnover tray (21) lifted by the lifting device (44).

8. The double-layer cassette jig lifting type exchange and storage board device according to claim 1, characterized in that: The cassette jig (1) includes a box body (11). An accommodation cavity (12) is arranged inside the box body (11). A top plate (13) for carrying an external circuit board is arranged in the accommodation cavity (12). A top opening (14) is arranged below the box body (11). The top plate (13) can be lifted through the top opening (14) so that the top plate (13) slides along the inner wall of the accommodation cavity (12), and the external circuit board carried on the top plate (13) is exposed out of the accommodation cavity (12), facilitating the robot to pick up the external circuit board exposed out of the accommodation cavity (12).

9. The double-layer cassette jig lifting type exchange and storage board device according to claim 8, characterized in that: A top lifting device (7) is arranged below the storage and feeding conveying device (4). The top lifting device (7) includes a top lifting base (71), a top lifting frame (72) slidably arranged on the top lifting base (71), and a top lifting driver (73) fixed to the top lifting base (71) and driving the top lifting frame (72) to slide up and down on the top lifting base (71). The turnover tray (21) is provided with a through hole (26) perpendicular to the top opening (14). The top lifting driver (73) drives the top lifting frame (72) to rise through the through hole (26) and the top opening (14) to abut against the top plate (13) and lift the top plate (13), so that the top plate (13) slides along the inner wall of the accommodation cavity (12), and the circuit board carried on the top plate (13) is exposed out of the accommodation cavity (12), facilitating the robot to pick up the external circuit board exposed out of the accommodation cavity (12).

10. A method for storing and feeding boards, characterized in that: It includes the double-layer cassette jig lifting type exchange and storage board device according to any one of claims 1-9, and its storage and feeding steps are as follows: Step 1: The carrier vehicle (2) carries the turnover tray (21) loaded with an external circuit board or an empty cassette jig (1) into the conveying channel. The two lifting drivers (32) drive their respective lifting frames (33) to rise, so that the two first lifting conveyor belts (34) lift the turnover tray (21) loaded with an external circuit board or an empty cassette jig (1) and rise with the rise of their respective lifting frames (33), and the carrier vehicle 2 exits the conveying channel; Step 2: The two first lifting conveyor belts (34) rise to be flush with the loading and unloading conveyor device (4), the two lifting drivers (32) stop operating, and the two first lifting conveyor belts (34) simultaneously convey the turnover trays (21) carrying the external circuit boards or the empty cartridge fixtures (1) to the loading and unloading conveyor device (4), so that the turnover trays (21) carrying the external circuit boards or the empty cartridge fixtures (1) are placed on the loading and unloading conveyor device (4), and the cartridge fixtures (1) with external circuit boards or empty ones are in the loading and unloading station, facilitating the manipulator to perform the circuit board loading and unloading operations; Step 3: During the circuit board loading and unloading operation of the manipulator, the two lifting drivers (32) drive their respective lifting frames (33) to descend and reset, and the two first lifting conveyor belts (34) descend and reset along with their respective lifting frames (33). Then the carrier vehicle (2) carries the turnover trays (21) carrying the external circuit boards or the empty cartridge fixtures (1) into the conveying channel. The two lifting drivers (32) drive their respective lifting frames (33) to rise, so that the two first lifting conveyor belts (34) lift the turnover trays (21) carrying the external circuit boards or the empty cartridge fixtures (1) and rise along with their respective lifting frames (33). The two second lifting conveyor belts (35) rise to be flush with the loading and unloading conveyor device (4), and the two lifting drivers (32) stop operating, waiting for the circuit board loading and unloading operation of the manipulator to be completed; Step 4: After the circuit board loading and unloading operation of the manipulator is completed, the loading and unloading conveyor device (4) conveys the turnover trays (21) carrying the external circuit boards or the empty cartridge fixtures (1) to the two second lifting conveyor belts (35). After the two second lifting conveyor belts (35) receive the turnover trays (21) carrying the external circuit boards or the empty cartridge fixtures (1), the two lifting drivers (32) drive their respective lifting frames (33) to descend, so that the two first lifting conveyor belts (34) are again flush with the loading and unloading conveyor device (4). The two first lifting conveyor belts (34) convey the turnover trays (21) carrying the external circuit boards or the empty cartridge fixtures (1) to the loading and unloading conveyor device (4) again, so that the cartridge fixtures (1) with external circuit boards or empty ones are again in the loading and unloading station, facilitating the manipulator to perform the circuit board loading and unloading operations and reducing the downtime waiting for the turnover trays (21) carrying the external circuit boards or the empty cartridge fixtures (1) to be conveyed to the circuit board loading and unloading station; Step 5: The two lifting drivers (32) drive their respective lifting frames (33) to continue descending, causing the two second lifting conveyor belts (35) that receive and carry the turnover trays (21) containing the external circuit boards or the empty cassette fixtures (1) to descend with their respective lifting frames (33). When the turnover trays (21) containing the external circuit boards or the empty cassette fixtures (1) are pressed against the carrier vehicle (2) under the action of gravity, the turnover trays (21) containing the external circuit boards or the empty cassette fixtures (1) are separated from the two second lifting conveyor belts (35). The two lifting drivers (32) stop operating. The carrier vehicle (2) receives the turnover trays (21) containing the external circuit boards or the empty cassette fixtures (1) and exits the conveying channel to convey the turnover trays (21) containing the external circuit boards or the empty cassette fixtures (1) to the next production line. The two lifting drivers (32) drive their respective lifting frames (33) to descend, causing the two first lifting conveyor belts (34) and the two second lifting conveyor belts (35) to return to their original positions; Step 6: Repeat the above Steps 3 to 5 to enable the turnover trays (21) containing the external circuit boards or the empty cassette fixtures (1) to be alternately conveyed between the material loading and unloading conveying device (4) and the carrier vehicle (2).

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