PCB carrier automatic loading and unloading and reflow apparatus

Abstract

The present application relates to the technical field of PCB carrier loading and unloading, and particularly relates to a PCB carrier automatic loading and unloading and reflow equipment, which comprises a cabinet body, the upper side of the cabinet body is provided with a carrier plate conveying assembly, a PCB plate conveying assembly and a jacking assembly, the carrier plate conveying assembly and the PCB plate conveying assembly are arranged at an angle of 90 degrees, and the jacking assembly is arranged at the joint position of the carrier plate conveying assembly and the PCB plate conveying assembly. Through the 90-degree staggered layout of the carrier plate conveying assembly and the PCB plate conveying assembly, combined with the lifting cooperative action of the jacking assembly, the automatic combination and automatic separation of the PCB plate and the carrier in the equipment are realized, the conveying lines one and two in the carrier plate conveying assembly can be adjusted in spacing to adapt to carrier plates of different specifications, the two groups of conveying lines five in the PCB plate conveying assembly can be independently moved to avoid the carrier plate or constrain the PCB plate, and the jacking assembly fixes the PCB plate through air rod suction and drives the lifting of the jacking module.

Description

Technical Field

[0001] This invention relates to the field of PCB carrier loading and unloading technology, and in particular to automatic loading, unloading and return equipment for PCB carriers. Background Technology

[0002] In the SMT production process of PCBs, to prevent deformation of the PCB board during high-temperature processes such as reflow soldering and to improve positioning accuracy, the PCB board is usually placed on a carrier for production. However, loading the PCB board onto the carrier at the beginning of the production line and unloading it from the carrier at the end has long been done manually. This traditional method has many drawbacks: firstly, manual operation is slow and difficult to match the high-speed cycle of the SMT production line, easily becoming a bottleneck in production capacity; secondly, the components on the PCB board are delicate and fragile, and uneven force or operational errors during manual handling can easily cause quality problems such as component collisions, component breakage, or solder joint cracks. In addition, the empty carrier after disassembly needs to be returned from the end of the production line to the beginning. Existing methods often rely on manual handling to a simple conveyor line for return, lacking a closed-loop return capability that automatically connects with the loading and unloading stations. Therefore, we propose an automated loading, unloading, and return equipment for PCB carriers. Summary of the Invention

[0003] In order to overcome the technical problems existing in the prior art, the present invention provides an automatic loading, unloading and return device for PCB carriers.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: including a cabinet, on the upper side of the cabinet are provided a carrier board conveying assembly, a PCB board conveying assembly and a lifting assembly, the carrier board conveying assembly and the PCB board conveying assembly are staggered at ninety degrees, and the lifting assembly is set at the junction position of the carrier board conveying assembly and the PCB board conveying assembly. The carrier plate conveying assembly includes conveyor line one, conveyor line two, conveyor line three and conveyor line four. Conveyor line one and conveyor line two are rotatably equipped with levers on their sides. The levers support the carrier plate to the upper side of conveyor line one and conveyor line two. Conveyor line one, conveyor line two, conveyor line three and conveyor line four cooperate to convey the carrier plate. Conveyor line three and conveyor line four are equipped with lifting components, which support the lifting and lowering movement of the carrier plate. The PCB board conveying assembly includes two sets of fixed frames. Movable plate one and movable plate two are provided on the side of the fixed frames. Movable plate one and movable plate two on the side of the two sets of fixed frames are arranged in an alternating manner. Conveyor line five and transfer components are provided on the upper side of movable plate one and movable plate two. The transfer components transport the PCB board and the carrier board. Monitoring modules are provided on the side of the two sets of fixed frames. The monitoring modules constrain the movement of movable plate one and movable plate two and accurately determine their positions. The lifting assembly includes a second lifting module and a support frame. A magnetic seat and a pneumatic rod are provided on the upper side of the top plate of the support frame. A positioning module is provided on the side of the magnetic seat. The magnetic seat and the pneumatic rod move on the upper side of the support frame. The positioning module accurately determines the position of the magnetic seat and displays it in the display module.

[0005] Furthermore, the first conveyor line is fixedly installed on the upper side of the cabinet, and the second conveyor line is mirror-movably installed on the upper side of the cabinet corresponding to the position of the first conveyor line. A transfer module is fixedly installed on the side of the first conveyor line, and the second conveyor line is threadedly sleeved on the side of the threaded rod of the first transfer module. A swing module is fixedly installed on the side of the second conveyor line, and a lever is symmetrically limited and sleeved on the side of the hexagonal rod of the swing module.

[0006] Furthermore, the third conveyor line is fixedly installed on the upper side of the cabinet, and the fourth conveyor line is mirror-movably installed on the upper side of the cabinet corresponding to the third conveyor line. The side of the third conveyor line is fixedly provided with the second transfer module, and the fourth conveyor line is threadedly sleeved on the side of the threaded rod of the second transfer module. The lifting component includes a lifting module 1 vertically fixed on the side of conveyor line 3 and conveyor line 4 that are close to each other. A support plate is fixedly installed on the upper side of the lifting module 1. Limit blocks are fixedly installed on the side of conveyor line 3 and conveyor line 4 that are close to each other.

[0007] Furthermore, the two sets of fixing brackets are fixedly installed on the upper side of the cabinet, and a main motor is fixedly installed on the side of the two sets of fixing brackets. The main motors on the side of the two sets of fixing brackets are staggered. An adjusting shaft is fixedly installed at the output end of the main motor. Movable plate one is threadedly sleeved on the side of the adjusting shaft, and movable plate two is movably sleeved on the side of the adjusting shaft. Movable plate two and movable plate one are movably sleeved on the side of the cylindrical rod of the fixing bracket.

[0008] Furthermore, the five conveyor lines are fixedly installed on the upper sides of the two sets of fixed frames, with the two sets of conveyor lines arranged in a mirror image. The monitoring modules on the sides of the two sets of fixed frames are also arranged in staggered positions corresponding to the adjustment shafts. The transfer component includes slide rails fixedly installed on the five phases of the two sets of conveyor lines away from each other. An adjustment frame is slidably installed on the side of the slide rail, and a limit module is fixedly installed on the side of the adjustment frame at an angle.

[0009] Furthermore, the monitoring module includes a rack shaft, which is fixedly mounted on the side of a rectangular plate of a fixed frame. Movable plate one and movable plate two are movably sleeved on the side of the rack shaft. Gears are rotatably mounted on the inner sides of movable plate one and movable plate two, and the gears mesh with the rack shaft. Circuit board one is fixedly mounted inside the rack shaft. Press block one is fixedly mounted equidistantly on the side of circuit board one, and press block one extends through the rack shaft. Press block one is positioned corresponding to the tooth groove of the rack shaft. A power supply module is fixedly mounted on the inner side of the rack shaft, and the power supply module is electrically connected to press block one through wires to supply power to it.

[0010] Furthermore, the second lifting module is fixedly installed on the upper side of the cabinet, the support frame is fixedly installed on the side of the second lifting module, the support frame is positioned between the first lifting module, an air supply module is fixedly installed on the lower side of the top plate of the support frame, a magnetic seat is installed on the upper side of the top plate of the support frame, an air rod is vertically fixed on the side of the magnetic seat, and a positioning module is installed on the upper side of the top plate of the support frame.

[0011] Furthermore, the positioning module includes positioning holes, which are equidistantly opened on the upper side of the top plate of the support frame. A second circuit board is fixedly installed on the lower side of the top plate of the support frame. A second push block is fixedly arranged on the side of the second circuit board at equal intervals, and the push block corresponds to the position of the positioning hole. A trigger rod is movably arranged at the lower center position of the lifting module two. A magnetic block is fixedly installed on the upper side of the trigger rod. The upper magnetic pole of the magnetic block is the same as the lower magnetic pole of the magnetic base. A support cylinder is fixedly connected to the side of the trigger rod and the lower side of the magnetic base.

[0012] Compared with the prior art, the beneficial effects that this invention can achieve are: 1. This invention achieves automatic assembly and separation of PCB boards and carriers within the equipment by using a 90-degree staggered layout of the carrier board conveying assembly and the lifting assembly in conjunction with the lifting and jacking action. This replaces the traditional manual handling process. During this process, the adjustable spacing of conveyor lines one and two in the carrier board conveying assembly adapts to carrier boards of different specifications. The two sets of conveyor lines five in the PCB board conveying assembly can move independently to avoid carrier boards or constrain PCB boards. The lifting assembly uses a pneumatic rod to hold and fix the PCB board and is driven to lift and jack up by the lifting module. The entire assembly and disassembly process is completed automatically by the equipment, improving loading and unloading efficiency.

[0013] 2. This invention utilizes a monitoring module installed in the PCB board conveying assembly. The meshing transmission of gears and rack shafts guides the sliding path of the movable plate. Simultaneously, during meshing, the gear teeth press against a block inside the rack shaft, triggering the circuit board to send a position signal to the controller. This enables real-time and precise monitoring of the movement position of conveyor line five, overcoming the cumulative errors and interference / collision risks caused by traditional threaded drives that rely solely on motor rotation angles to calculate position. This ensures accurate and reliable movement of the two sets of conveyor lines five when adapting to different PCB board specifications or when avoiding collisions with other PCB boards.

[0014] 3. This invention uses limiting blocks set on the sides of conveyor lines three and four in the carrier plate conveying assembly to position and constrain the carrier plate. In conjunction with the lifting module one driving the support plate to lift the carrier plate upward, it achieves precise positioning and stable lifting of the carrier plate at the loading and unloading station. At the same time, the swing module set at the end of conveyor lines one and two drives the lever to switch between vertical and horizontal states, so that the carrier plate can be smoothly connected to conveyor lines one and two from the external vertical assembly line, or smoothly exported from conveyor lines one and two to the vertical assembly line, realizing the automatic closed-loop return of empty carriers from the end of the production line to the front.

[0015] 4. This invention features a structure in which the magnetic base in the lifting assembly can be arbitrarily attracted and fixed to the upper side of the support frame, and the air rod is set on the side of the magnetic base. This allows the air rod to be flexibly adjusted in position according to the specific size of the PCB board and the support requirements. At the same time, with the help of the positioning hole, circuit board two, button two, trigger rod and magnetic block in the positioning module, when the magnetic base is attracted, the like poles of the magnetic block repel each other, pushing the trigger rod into the positioning hole and triggering the button signal. This can accurately determine the current center position of the magnetic base and air rod, and display it in the display module for quick confirmation by the staff or automatic verification by the system. This reduces the time spent on repeated trial and error when adjusting the air rod support point for different PCB board specifications, and improves the convenience and efficiency of equipment changeover. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the carrier plate conveying assembly of the present invention; Figure 4 This is a schematic diagram of the structure of the carrier plate conveying assembly of the present invention from another perspective; Figure 5 This is a schematic diagram of the peripheral structure of the lifting module one of the present invention; Figure 6 This is a schematic diagram of the PCB board conveying assembly of the present invention; Figure 7 This is a schematic diagram of the peripheral structure of the fixing frame of the present invention; Figure 8 This is a cross-sectional structural diagram of the fixing frame of the present invention; Figure 9 This is a schematic diagram of the structure of the fifth conveyor line of the present invention; Figure 10 This is a schematic diagram of the structure of the five-piece conveyor line of the present invention from another perspective; Figure 11 This is an exploded view of the peripheral structure of the gear shaft of the present invention; Figure 12 For the present invention Figure 8 A magnified structural diagram at point A; Figure 13 This is a schematic diagram of the lifting assembly of the present invention; Figure 14 This is an exploded view of the peripheral structure of the support frame of the present invention; Figure 15 This is a cross-sectional structural diagram of the magnetic base of the present invention; Figure 16 For the present invention Figure 15 A magnified structural diagram at point B.

[0017] The components include: 1. Cabinet; 11. Protective cover; 2. Carrier plate conveying assembly; 21. Conveyor line one; 22. Conveyor line two; 23. Transfer module one; 24. Swing module; 241. Lever; 25. Conveyor line three; 26. Conveyor line four; 27. Transfer module two; 28. Lifting module one; 281. Support plate; 29. ​​Limit block; 3. PCB board conveying assembly; 31. Fixing frame; 32. Main motor; 33. Adjusting shaft; 34. Movable plate one; 35. Movable plate two; 36. 1. Conveyor line 5; 37. Slide rail; 38. Adjusting frame; 381. Limiting module; 4. Lifting assembly; 41. Lifting module 2; 42. Support frame; 43. Air supply module; 44. Magnetic base; 45. Air rod; 5. Monitoring module; 51. Gear shaft; 52. Gear; 53. Circuit board 1; 54. Button 1; 55. Power supply module; 6. Positioning module; 61. Positioning hole; 62. Circuit board 2; 63. Button 2; 64. Trigger rod; 65. Magnetic block; 66. Support cylinder. Detailed Implementation

[0018] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0019] Example: Figure 1 and Figure 2As shown, the PCB carrier automatic loading, unloading, and return equipment includes a cabinet 1. The cabinet 1 integrates multiple electrical component modules for gas supply, power supply, monitoring, and control operations. A carrier board conveying assembly 2 is located on the upper side of the cabinet 1, capable of conveying carrier boards. A PCB board conveying assembly 3 is located on the upper side of the cabinet 1, corresponding to the carrier board conveying assembly 2. The carrier board conveying assembly 2 and the PCB board conveying assembly 3 are staggered at a 90-degree angle, allowing for the conveying of PCB boards. A lifting assembly 4 is located on the upper side of the cabinet 1 at the junction of the carrier board conveying assembly 2 and the PCB board conveying assembly 3. The lifting assembly 4 assists in the automatic assembly and disassembly of the PCB board and the carrier board. A protective cover 11 is fixedly installed on the upper side of the cabinet 1. The protective cover 11 covers the carrier board conveying assembly 2, the PCB board conveying assembly 3, and the lifting assembly 4. Specifically, the PCB board is conveyed into the protective cover 11 through the PCB board conveying assembly 3, and the carrier board is conveyed into the protective cover 11 through the carrier board conveying assembly 2. After the PCB board is lifted by the lifting assembly 4, the carrier board is lifted by the carrier board conveying assembly 2. Then, the PCB board is lowered one by one to place it on the upper part of the carrier board for assembly. The reverse operation can be used for automatic disassembly. The carrier board is a grid-shaped board.

[0020] like Figures 2 to 5As shown, the carrier plate conveying assembly 2 includes a first conveyor line 21 and a second conveyor line 22. The first conveyor line 21 is fixedly positioned on the upper side of the cabinet 1. The second conveyor line 22 is movably positioned on the upper side of the cabinet 1 corresponding to the first conveyor line 21. A transfer module 23 is fixedly mounted on the side of the first conveyor line 21, and the second conveyor line 22 is threadedly connected to the side of the threaded rod of the transfer module 23. The transfer module 23 consists of a motor, a threaded rod, and a synchronous belt. The motor drives the threaded rod to rotate via the synchronous belt, thus conveying the... Line 22 can be moved by the engagement of a threaded rod to adjust the distance between conveyor line 1 21 and conveyor line 22. A swing module 24 is fixedly installed on the side of conveyor line 22. The swing module 24 consists of a motor and a hexagonal rod. The hexagonal rod extends through conveyor line 22 and conveyor line 1 21. A lever 241 is symmetrically and limitly sleeved on the side of the hexagonal rod of the swing module 24. The lever 241 is rotatably mounted on the side of the corresponding conveyor line 1 21 and conveyor line 22 via bearings. When conveyor line 22 moves, the corresponding lever 241 slides on the side of the hexagonal rod of the swing module 24. Specifically, the carrier plate can be conveyed by the cooperation of conveyor line 21 and conveyor line 22. During unloading, the lever 241 is in a vertical position, so that the carrier plate is aligned with it. Then, the swing module 24 drives the lever 241 to swing and set it horizontally with conveyor line 21 and conveyor line 22. The carrier plate can then be laid flat on the upper side of conveyor line 21 and conveyor line 22 as the lever 241 swings. At this time, the movement of conveyor line 1 21 and conveyor line 22 can drive the carrier plate to move; during discharge, the carrier plate moves to the position of lever 241 via conveyor line 1 21 and conveyor line 22, and then the swing module 24 drives lever 241 to swing vertically, so that the carrier plate can reach the externally set vertical conveyor line and be circulated through the vertical conveyor line; among them, the transfer module 1 23 can drive the movement to adjust the distance and position between conveyor line 1 21 and conveyor line 22, so as to adapt to the use of carrier plates of different specifications; Conveyor line 25 and conveyor line 26 are respectively provided on the sides of conveyor line 1 21 and conveyor line 22. Conveyor line 3 25 is fixedly installed on the upper side of cabinet 1, and conveyor line 4 26 is mirror-movably installed on the upper side of cabinet 1 corresponding to the position of conveyor line 3 25. Transfer module 27 is fixedly installed on the side of conveyor line 3 25, and conveyor line 4 26 is threadedly sleeved on the side of the threaded rod of transfer module 27. Transfer module 27 has the same structure as transfer module 1 23. Transfer module 27 can move to a position where it engages with the side of the threaded rod of conveyor line 4 26. Lifting module 28 is vertically fixed on the side of conveyor line 3 25 and conveyor line 4 26 that are close to each other. A support plate 28 is fixedly installed on the upper side of the lifting module 28, and a limit block 29 is fixedly installed on the side of the conveyor line 25 and the conveyor line 26. Specifically, the carrier plate is conveyed by the cooperation of the conveyor line 21 and the conveyor line 22, and then reaches the position of the conveyor line 25 and the conveyor line 26. It continues to move under the conveyor line until it is stopped by the limit block 29. At this time, the support plate 281 is pulled by the lifting module 28 to the lower position of the carrier plate. When the subsequent preparation is completed, the lifting module 28 can push the support plate 281 to support the carrier plate to move upward. The transfer module 27 can synchronously drive the conveyor line 26 to move its position to adapt to the use of carrier plates of different specifications.

[0021] like Figure 2 and Figures 6 to 12As shown, the PCB board conveying assembly 3 includes two sets of fixing frames 31, which are fixedly installed on the upper side of the cabinet 1. Each fixing frame 31 is a frame composed of two rectangular plates and cylindrical rods. A main motor 32 is fixedly installed on the side of each of the two sets of fixing frames 31, and the main motors 32 on the side of the two sets of fixing frames 31 are staggered. An adjusting shaft 33 is fixedly installed at the output end of the main motor 32, and the adjusting shaft 33 passes through the rectangular plate of the fixing frame 31 and rotates with it. A threaded sleeve is installed on the side of the adjusting shaft 33. A movable plate 34 is connected to the side of the cylindrical rod of the fixed frame 31. A movable plate 35 is movably connected to the side of the adjusting shaft 33 and is also movably connected to the side of the cylindrical rod of the fixed frame 31. The movable plates 34 and 35 on the sides of the two sets of fixed frames 31 are arranged alternately. Conveyor lines 36 are fixedly installed on the upper side of each movable plate 34 and 35 on the sides of the two sets of fixed frames 31. The two sets of conveyor lines 36 are mirror images of each other. A monitoring module 5 is provided on the side of component 1, and the monitoring module 5 passes through the interior of movable plate 1 34 and movable plate 2 35. The monitoring modules 5 on the sides of the two sets of fixed frames 31 are also arranged in staggered positions corresponding to the adjustment shaft 33. Specifically, the left main motor 32 drives the adjustment shaft 33 to rotate, and the corresponding adjustment shaft 33 engages with movable plate 1 34. At this time, movable plate 1 34 can be moved by the cylindrical rod of fixed frame 31, and the conveyor line 5 36 on the side of movable plate 1 34 can be moved. Movable plate 2 35 on the side of the moving conveyor line 5 36 is moved by the cylindrical rod of the corresponding fixed frame 31. The right main motor 32 drives the adjustment shaft 33 to rotate, and the other set of conveyor line 5 36 can be driven to move. When conveyor line 5 36 moves, the monitoring module 5 can further constrain the component and monitor its position in real time. In this way, the two sets of conveyor line 5 36 can be controlled to move, which can be used to adapt to PCB boards of different specifications, and can also perform avoidance and constraint operations on the carrier board. The two sets of conveyor lines 36 are fixedly provided with slide rails 37 on their opposite sides. An adjustment frame 38 is slidably provided on the side of the slide rail 37. The adjustment frame 38 is provided with screw locking limit on its side. A limit module 381 is fixedly and inclinedly provided on the side of the adjustment frame 38. Specifically, the position of the adjustment frame 38 is adjusted by sliding on the side of the slide rail 37, and the limit module 381 moves accordingly. The limit module 381 can limit and constrain the PCB board. The monitoring module 5 includes a rack shaft 51, which is fixedly mounted on the side of a rectangular plate of the mounting frame 31. One side of the rack shaft 51 is toothed and its cross-section is a quarter circle. Movable plates 34 and 35 are movably fitted onto the side of the rack shaft 51. Gears 52 are rotatably mounted on the inner sides of the movable plates 34 and 35 and mesh with the rack shaft 51. A circuit board 53 is fixedly mounted inside the rack shaft 51. A button 54 is fixedly mounted at equal intervals on the side of the circuit board 53 and extends through the rack shaft 51. The button 54 corresponds to the tooth groove of the rack shaft 51. A power supply module 55 is fixedly installed inside the rack shaft 51 and is electrically connected to the button 54 via wires to supply power. Specifically... When the adjusting shaft 33 engages with the movable plate 34, the conveyor line 36 on the side of the movable plate 34 moves, and the movable plate 35 on the side of the conveyor line 36 moves accordingly. At this time, the gear 52 engages with the rack shaft 51, thereby guiding and constraining the movement of the movable plate 34 and the movable plate 35, avoiding wear and imbalance of the adjusting shaft 33's thread. In addition, when the gear 52 engages with the rack shaft 51, the top of the gear 52 can press the button 54 to trigger a signal. The signal is fed back to the controller through the circuit board 53, which can accurately determine the position of the movable plate 34 and the conveyor line 36, ensuring the accuracy of the operation and avoiding the situation where the position of the corresponding drive component is determined by the automatic rotation angle of the motor in conventional thread engagement, resulting in errors and component interference and collisions.

[0022] like Figure 2 and Figures 13 to 16 As shown, the lifting assembly 4 includes a second lifting module 41, which is fixedly installed on the upper side of the cabinet 1. A support frame 42 is fixedly installed on the side of the second lifting module 41. The support frame 42 is composed of a top plate, a bottom plate, and a cylindrical rod. The support frame 42 is positioned between the first lifting modules 28. An air supply module 43 is fixedly installed on the lower side of the top plate of the support frame 42. A magnetic base 44 is installed on the upper side of the top plate of the support frame 42. The upper plate of the support frame 42 is an iron plate. An air rod 45 is vertically fixed on the side of the magnetic base 44. The air rod 45 is a hollow cylindrical tube with an air nozzle on the upper side. The air rod 45 can be connected to the air supply module 43 via an air pipe, and the PCB board can be attracted and fixed through the air circuit. A positioning module 6 is provided on the upper side of the top plate of the support frame 42 corresponding to the position of the magnetic seat 44. Specifically, the lifting module 41 can drive the support frame 42 to move up and down. The synchronous air supply module 43 can be connected to an external air supply device. The air supply module 43 is connected to the air rod 45 through the air circuit. When the air rod 45 supports the PCB board, it can attract and fix it. In addition, the magnetic seat 44 can be arbitrarily attracted and fixed on the upper side of the top plate of the support frame 42 so that the air rod 45 can support any position of the PCB board. The positioning module 6 includes positioning holes 61, which are equidistantly located on the upper side of the top plate of the support frame 42. The positioning holes 61 are positioned corresponding to the magnetic base 44 and are circular. A second circuit board 62 is fixedly mounted on the lower side of the top plate of the support frame 42, corresponding to the positioning holes 61. Second push blocks 63 are equidistantly fixed on the side of the second circuit board 62, also corresponding to the positioning holes 61. The module 6 is movable at the lower center of the lifting module 41. A trigger rod 64 is provided, which is a cylindrical rod with a cross-shaped cross section. A magnetic block 65 is fixedly installed on the upper side of the trigger rod 64. The upper magnetic pole of the magnetic block 65 is the same as the lower magnetic pole of the magnetic base 44. A support cylinder 66 is fixedly connected to the side of the trigger rod 64 and the lower side of the magnetic base 44, and the support cylinder 66 is partially movably sleeved on the side of the trigger rod 64. The support cylinder 66 is an elastic corrugated cylinder. Specifically, the switch on the side of the magnetic base 44 can be opened and closed to put it in a magnetic attraction state. In the magnetic state, the magnetic base 44 can be attracted to the side of the top plate of the support frame 42, and at the same time, it corresponds to the same magnetic pole of the magnetic block 65. The same magnetic poles repel each other, and the trigger rod 64 can be pushed into the corresponding positioning hole 61. The trigger rod 64 presses against the side of the corresponding button 63, and the circuit board 62 can know that the signal of the corresponding button 63 is fed back to the external controller. At this time, the center point position of the magnetic base 44 can be determined. In this way, for different PCB boards, the magnetic base 44 can be quickly moved to the position of the corresponding positioning hole 61 simply according to the positioning display position in the program. After the magnetic base 44 is fixed, the trigger signal of the corresponding button 63 can be displayed on the display module to show the position of the magnetic base 44 for the staff to confirm. In the non-magnetic state, the trigger rod 64 is reset under the elastic pull of the support cylinder 66. The trigger rod 64 is higher than the lower side of the magnetic base 44, so that the sliding of the magnetic base 44 on the side of the top plate of the support frame 42 is not interfered with.

[0023] Working principle: Before use: On-site equipment layout, the equipment is set up at the front and rear ends of the SMT production line on site, and a vertical conveyor is set up on its side for the circulation and return of the carrier board; In use: First, the carrier plate is fed. The vertical conveyor returns the carrier plate to the lever 241 at the front end of the equipment. At this time, the swing module 24 drives the lever 241 to be vertically aligned with the carrier plate. Then, the swing module 24 drives the lever 241 to swing horizontally with conveyor line 1 21 and conveyor line 2 22. The carrier plate can then fall to the upper position of conveyor line 1 21 and conveyor line 2 22. Conveyor line 1 21 and conveyor line 2 22 transport the carrier plate to conveyor line 3 25 and conveyor line 4 26. Conveyor line 3 25 and conveyor line 4 26 work together to continuously move the carrier plate until the limit block 29 limits and constrains the carrier plate. At this time, the lifting module 1 28 pushes the support plate 281 to adhere to the lower side of the carrier plate and remain stationary, waiting for the next action. The transfer module 1 23 and transfer module 27 can be driven to move the positions of the conveyor line 2 22 and the conveyor line 4 26, and adjust the distance between the conveyor line 1 21, the conveyor line 2 22 and the conveyor line 3 25 and the conveyor line 4 26. When the conveyor line 2 22 moves, the corresponding lever 241 can slide and engage with the side of the hexagonal rod of the swing module 24, so as to be used with different specifications of carrier plates. The second step is PCB board feeding. A robotic arm or conveyor line feeds the PCB board to the upper side of two sets of conveyor lines 36. The PCB board is conveyed by the two sets of conveyor lines 36 until the limit module 381 limits the PCB board. At this point, the lifting module 41 pushes the support frame 42 upwards, allowing the pneumatic rod 45 to pass through the internal support of the carrier board and push the PCB board upwards. The air supply module 43 controls the air nozzle on the side of the pneumatic rod 45 to suction and fix the PCB board. Simultaneously, the two main motors 32 drive the corresponding adjusting shafts 33 to rotate, and the two main motors 32 rotate in opposite directions. The corresponding adjusting shaft 33 engages with the movable plate 34 and slides under the constraint of the cylindrical rod of the fixed frame 31. The two sets of conveyor lines 36 can move away from each other, making the distance greater than the side distance of the carrier plate. The lifting module 28 can then continue to push the support plate 281 to support the carrier plate to the upper position of the conveyor line 36. Similarly, the continuous conveyor line 36 is driven to move closer to the side distance of the corresponding carrier plate. The lifting module 28 pulls the support plate 281 downward, and the carrier plate can fall to the upper position of the conveyor line 36. Then the lifting module 41 pulls the support frame 42 downward so that the PCB board is placed on the upper position of the carrier plate to complete the assembly. When the main motor 32 drives the adjusting shaft 33 to rotate, the movable plate 1 34 and the movable plate 2 35 move accordingly. At this time, the corresponding gear 52 meshes with the rack shaft 51, constraining the sliding path of the movable plate 1 34 and the movable plate 2 35, making their movement position more accurate. When the gear 52 meshes with the rack shaft 51, the tooth tip of the gear 52 can gradually press on the side of the push block 1 54, and the circuit board 1 53 can receive a signal feedback to the external controller. At this time, the corresponding position of the movable plate 1 34 and the movable plate 2 35 can be effectively determined, ensuring that the conveyor line 5 36 will not cause interference after moving its position, and avoiding the error that occurs when the position of the driven movable plate 1 34 is determined solely by the rotation angle of the main motor 32. The third step is the unloading of the carrier board. After the assembled carrier board and PCB board are processed by the SMT production line, the PCB board conveying component 3 at the back end of the SMT production line similarly conveys the assembly to the limiting module 381. At this time, the reverse operation is performed to lift the PCB board off the carrier board. Then the carrier board is supported and falls to the upper side of conveyor line 3 25 and conveyor line 4 26. The carrier board is conveyed to conveyor line 1 21 and conveyor line 2 22 through conveyor line 3 25 and conveyor line 4 26. The corresponding swing module 24 drives the lever 241 to support the carrier board to a vertical unloading position. The carrier board falls to the vertical direct flow line and is conveyed to the front end of the SMT production line. After the positions of the two sets of conveyor line 5 36 are adjusted, the PCB board falls to the upper side of conveyor line 5 36 and is driven to the discharge end, where it is unloaded by a robotic arm or conveyor line. When changing to different PCB boards and carrier boards, simply input the dimensions of the PCB board and carrier board into the controller. The system will automatically control the transfer module 1 23 and transfer module 2 27 to drive the corresponding conveyor lines 2 22 and 4 26 to move and align with the carrier board. The main motor 32 will drive the corresponding movable plates 1 34 and 2 35 to move and align the distance of conveyor line 5 36 with the PCB board. In addition, the operator can determine whether the air rod 45 will interfere with the PCB board by checking the position of the air rod 45 support point displayed on the controller. The magnetic seat 44 can be manually switched to the non-magnetic state, allowing it to slide on the support frame 42. Using the positioning hole 61 as a reference position, the magnetic seat 44 can be switched back to the magnetic state. The corresponding magnetic block 65 will push the trigger rod 64 into the positioning hole 61, pressing against the side of the button block 2 63 to trigger the circuit board 2 62 and obtain a signal. At this time, observe whether the position of the magnetic seat 44 on the display module matches the expectation. This avoids the inability to effectively determine the corresponding position of the air rod 45 and the PCB board when adjusting the position of the air rod 45, which would require repeated adjustments before normal use.

[0024] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. PCB carrier automatic loading, unloading and return equipment, including a cabinet (1), a carrier board conveying assembly (2), a PCB board conveying assembly (3) and a lifting assembly (4) are provided on the upper side of the cabinet (1), the carrier board conveying assembly (2) and the PCB board conveying assembly (3) are arranged at ninety degrees apart, and the lifting assembly (4) is set at the junction position of the carrier board conveying assembly (2) and the PCB board conveying assembly (3); Its features are: The carrier plate conveying assembly (2) includes a first conveyor line (21), a second conveyor line (22), a third conveyor line (25), and a fourth conveyor line (26). The first conveyor line (21) and the second conveyor line (22) are rotatably equipped with levers (241) on their sides. The levers (241) support the carrier plate to the upper side of the first conveyor line (21) and the second conveyor line (22). The first conveyor line (21), the second conveyor line (22), the third conveyor line (25), and the fourth conveyor line (26) cooperate to convey the carrier plate. The third conveyor line (25) and the fourth conveyor line (26) are equipped with lifting components, which support the lifting and lowering movement of the carrier plate. The PCB board conveying assembly (3) includes two sets of fixed frames (31). The fixed frames (31) are provided with movable plate one (34) and movable plate two (35) on the side. The movable plate one (34) and movable plate two (35) on the side of the two sets of fixed frames (31) are arranged in an alternating manner. The upper side of the movable plate one (34) and movable plate two (35) is provided with conveyor line five (36) and transfer component. The transfer component transports the PCB board and the carrier board. The side of the two sets of fixed frames (31) is provided with monitoring module (5). The monitoring module (5) constrains the movement of movable plate one (34) and movable plate two (35) and accurately determines their positions. The lifting assembly (4) includes a second lifting module (41) and a support frame (42). A magnetic seat (44) and a pneumatic rod (45) are provided on the upper side of the top plate of the support frame (42). A positioning module (6) is provided on the side of the magnetic seat (44). The magnetic seat (44) moves on the upper side of the support frame (42) with the pneumatic rod (45). The positioning module (6) accurately determines the position of the magnetic seat (44) and displays it in the display module.

2. The PCB carrier automatic loading, unloading and return equipment according to claim 1, characterized in that: The first conveyor line (21) is fixedly installed on the upper side of the cabinet (1), and the second conveyor line (22) is mirror-movably installed on the upper side of the cabinet (1) corresponding to the position of the first conveyor line (21). The first transfer module (23) is fixedly installed on the side of the first conveyor line (21), and the second conveyor line (22) is threadedly sleeved on the side of the threaded rod of the first transfer module (23). The second conveyor line (22) is fixedly installed on the side of the swing module (24), and the lever (241) is symmetrically limited and sleeved on the side of the hexagonal rod of the swing module (24).

3. The PCB carrier automatic loading, unloading and return equipment according to claim 2, characterized in that: The third conveyor line (25) is fixedly installed on the upper side of the cabinet (1), and the fourth conveyor line (26) is mirror-movably installed on the upper side of the cabinet (1) corresponding to the position of the third conveyor line (25). The second transfer module (27) is fixedly installed on the side of the third conveyor line (25), and the fourth conveyor line (26) is threadedly sleeved on the side of the threaded rod of the second transfer module (27). The lifting component includes a lifting module (28) that is vertically fixed on the side of the conveyor line three (25) and the conveyor line four (26) adjacent to each other. A support plate (28) is fixedly installed on the upper side of the lifting module one (28). A limit block (29) is fixedly installed on the side of the conveyor line three (25) and the conveyor line four (26) adjacent to each other.

4. The PCB carrier automatic loading, unloading and return equipment according to claim 3, characterized in that: The two sets of fixing brackets (31) are fixedly installed on the upper side of the cabinet (1). The main motor (32) is fixedly installed on the side of the two sets of fixing brackets (31). The main motors (32) on the side of the two sets of fixing brackets (31) are staggered. The output end of the main motor (32) is fixedly installed with an adjusting shaft (33). Movable plate one (34) is threaded onto the side of the adjusting shaft (33). Movable plate two (35) is movably fitted onto the side of the adjusting shaft (33). Movable plate two (35) and movable plate one (34) are movably fitted onto the side of the cylindrical rod of the fixing bracket (31).

5. The PCB carrier automatic loading, unloading and return equipment according to claim 4, characterized in that: The five (36) conveyor lines are fixedly installed on the upper side of the two sets of fixed frames (31) with separate movable plates one (34) and two (35) on the side. The two sets of five (36) conveyor lines are mirror images of each other. The monitoring modules (5) on the sides of the two sets of fixed frames (31) are also staggered in position corresponding to the adjustment shaft (33). The transfer component includes a slide rail (37) fixedly installed on the side away from the two sets of conveyor lines (36). An adjustment frame (38) is slidably installed on the side of the slide rail (37). A limit module (381) is fixedly installed on the side of the adjustment frame (38) at an angle.

6. The PCB carrier automatic loading, unloading and return equipment according to claim 5, characterized in that: The monitoring module (5) includes a rack shaft (51), which is fixedly installed on the side of the rectangular plate of the fixed frame (31). Movable plate one (34) and movable plate two (35) are movably sleeved on the side of the rack shaft (51). Gears (52) are rotatably installed on the inner side of movable plate one (34) and movable plate two (35), and the gears (52) mesh with the rack shaft (51). Circuit board one (53) is fixedly installed inside the rack shaft (51). Press block one (54) is fixedly installed at equal intervals on the side of circuit board one (53), and press block one (54) extends through the rack shaft (51). Press block one (54) is set at the tooth groove position of the rack shaft (51). Power supply module (55) is fixedly installed on the inner side of the rack shaft (51), and power supply module (55) is connected to press block one (54) through wires to supply power.

7. The PCB carrier automatic loading, unloading and return equipment according to claim 6, characterized in that: The second lifting module (41) is fixedly installed on the upper side of the cabinet (1), the support frame (42) is fixedly installed on the side of the second lifting module (41), the support frame (42) is located between the first lifting module (28), the air supply module (43) is fixedly installed on the lower side of the top plate of the support frame (42), the magnetic seat (44) is located on the upper side of the top plate of the support frame (42), the air rod (45) is vertically fixed on the side of the magnetic seat (44), and the positioning module (6) is located on the upper side of the top plate of the support frame (42).

8. The PCB carrier automatic loading, unloading and return equipment according to claim 7, characterized in that: The positioning module (6) includes positioning holes (61), which are equidistantly opened on the upper side of the top plate of the support frame (42). Circuit board two (62) is fixedly installed on the lower side of the top plate of the support frame (42). Press block two (63) is fixedly arranged on the side of circuit board two (62) at equal intervals and the press block two (63) corresponds to the position of positioning hole (61). Trigger rod (64) is movably arranged at the lower center position of lifting module two (41). Magnetic block (65) is fixedly installed on the upper side of trigger rod (64). The upper magnetic pole of magnetic block (65) is the same as the lower magnetic pole of magnetic base (44). Support cylinder (66) is fixedly connected to the side of trigger rod (64) and the lower side of magnetic base (44).

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