SMT plate pushing machine

Abstract

The utility model relates to an SMT plate pushing machine which comprises a rack, the feeding end of the rack communicates with a PCB conveying belt, a plate pushing assembly is arranged in the rack, a conveying belt is arranged on the side, close to the discharging end, of a workbench, a collecting box is arranged on the conveying belt, a limiting assembly is arranged on the workbench and comprises two limiting plates arranged in parallel, and the limiting plates are arranged on the conveying belt. The two limiting plates are arranged on the two opposite sides of the PCB correspondingly, the length direction of the two limiting plates is parallel to the moving direction of the PCB, a driving assembly is arranged on the workbench, the driving assembly drives the opposite surfaces of the two limiting plates to abut against the outer surface of the PCB, and the limiting assembly is arranged to limit the moving direction of the PCB. The phenomenon that the PCBs deviate due to uneven friction force is avoided, and therefore the probability that the PCBs enter the collecting box smoothly is increased. The PCB collecting device has the effect of improving the PCB collecting efficiency.

Description

Technical Field

[0001] The present application relates to the field of SMT technology, and in particular to an SMT pusher. Background Art

[0002] SMT, or surface mount technology, is the most popular technique and process in the electronics assembly industry. Surface mount technology for electronic circuits, also known as surface mounting, is a circuit connection technique that involves mounting leadless or short-lead surface mount components on the surface of a printed circuit board (PCB) or other substrate, then soldering them together through methods such as reflow soldering or dip soldering. In industrial production, circuit boards require reprocessing to improve efficiency.

[0003] Chinese patent publication number CN220173705U discloses an SMT pusher, including a pusher body, a cylinder box provided on the outer surface of the pusher body, a telescopic rod provided inside the cylinder box, a push plate fixedly connected to one end of the telescopic rod, and a working plate provided on the outer surface of the push plate. The pusher pushes the push plate through the telescopic rod inside the cylinder box, and the push plate pushes the SMT board out of the pusher body and pushes it into the collection box for collection.

[0004] However, when the above-mentioned pusher drives the push plate to push the PCB board through the telescopic rod, the components on the PCB board are unevenly distributed, resulting in differences in the weight distribution of the PCB. Therefore, the PCB board will be subjected to friction forces of different sizes during the movement. As a result, the PCB board is easily offset during the movement, resulting in the PCB board being unable to smoothly enter the collection box and be collected along the pushing direction, and the collection efficiency of the PCB board is reduced, which is an obvious shortcoming. Utility Model Content

[0005] In order to improve the collection efficiency of PCBs, the present application provides an SMT PCB pusher.

[0006] The SMT pusher provided in this application adopts the following technical solution:

[0007] An SMT pusher comprises a frame, wherein the feed end of the frame is connected to the PCB board conveyor belt, a pusher plate assembly for pushing the PCB board is arranged in the frame, a conveyor belt is arranged on the side of the workbench close to the discharge end, a collection box is arranged on the conveyor belt, an opening connected to the workbench is opened on the collection box, a limit assembly is arranged on the workbench, the limit assembly comprises two parallel limit plates, the two limit plates are respectively arranged on opposite sides of the PCB board, the length direction of the two limit plates is parallel to the moving direction of the PCB board, and a drive assembly is arranged on the workbench, the drive assembly drives the opposite surfaces of the two limit plates to abut against the outer surface of the PCB board.

[0008] By adopting the above technical solution, when the PCB board is moved to the workbench via the conveyor belt, the operator uses the driving assembly to make the two limit plates respectively abut the outer surface of the PCB, and then starts the push plate assembly. The push plate assembly pushes the PCB board to move along the workbench. During the movement of the PCB board, the limit plate limits the moving direction of the PCB board between the two limit plates. When the PCB board enters the collection box through the opening, the collection work of the PCB board is completed. The setting of the limit assembly realizes the restriction of the moving direction of the PCB, avoids the occurrence of deviation of the PCB board due to uneven friction, thereby increasing the probability of the PCB board smoothly entering the collection box and improving the collection efficiency of the PCB board.

[0009] Optionally, a driving groove and a guide groove are respectively provided at the opposite ends of the workbench, the driving assembly includes a bidirectional screw rod rotatably connected to the driving groove, a guide rod is provided in the guide groove, one end of the two limit plates are respectively threadedly connected to the two sections of the rod body with opposite thread rotation directions of the bidirectional screw rod, and the other end is slidably connected to the guide rod, the two limit plates are slidably connected in the driving groove and the guide groove, and a limiting motor is provided on the workbench for driving the bidirectional screw rod to rotate.

[0010] By adopting the above technical solution, when the PCB board is moved to the workbench via the conveyor belt, the operator starts the limit motor, and the output shaft of the limit motor drives the bidirectional screw to rotate. During the rotation of the bidirectional screw, the two limit plates are driven to move toward each other. When the surfaces of the two limit plates are in contact with the outer surface of the PCB board, the movement direction of the PCB board is limited by the two limit plates. The setting of the drive component realizes the limitation of PCB boards of different specifications and sizes, thereby improving the applicability of the limit component.

[0011] Optionally, a collection plate is slidably connected in the collection box, and the moving direction of the collection plate is perpendicular to the length direction of the workbench. A lifting motor is provided on the top of the collection box, and the output shaft of the lifting motor is coaxially fixedly connected to a second screw. A second guide shaft is provided at one end of the collection box away from the second screw, one end of the collection plate is threadedly connected to the second screw, and the other end is slidably connected to the second guide shaft.

[0012] By adopting the above technical solution, when the PCB board on the workbench enters the collection plate through the opening, the worker starts the lifting motor, and the lifting motor drives the second screw to rotate. Under the guidance of the second guide shaft, the second screw drives the collection plate to drop by the thickness of one PCB in the direction away from the opening. At this time, the PCB surface on the collection plate is flush with the opening surface, and the push plate assembly pushes the next PCB board to the PCB board surface on the collection plate. This arrangement realizes the automatic stacking and storage of multiple PCB boards, further improving the collection efficiency of PCB boards.

[0013] Optionally, the push plate assembly includes a first screw and a first guide shaft arranged on the frame, the first screw is rotatably connected to the frame, a connecting plate is slidably connected to the frame, one end of the connecting plate is threadedly connected to the first screw, and the other end is slidably connected to the first guide shaft, a groove is provided on the connecting plate, and a push plate is slidably connected in the groove, a lifting assembly for lifting the push plate is provided at the end of the frame away from the collection box, and a pushing motor for driving the first screw to rotate is provided on the frame.

[0014] By adopting the above technical solution, when the PCB board is limited, the worker starts the pushing motor in the forward direction, and the pushing motor drives the first screw to rotate forward. At this time, the first screw drives the push plate to move toward the collection box through the connecting plate. The push plate pushes the PCB board toward the collection box during the movement. When the push plate pushes the PCB board into the collection box, the worker starts the pushing motor in the reverse direction. At this time, the push plate moves away from the collection box. When the push plate moves close to the lifting assembly, the lifting assembly lifts the push plate to prevent the push plate from always abutting the workbench surface and hindering the next PCB board from entering the workbench. This arrangement ensures the smooth progress of the PCB board replenishment and collection process, and further improves the collection efficiency of the PCB boards.

[0015] Optionally, the lifting assembly includes a lifting block arranged on the inner side wall of the frame, the distance between the bottom surface of the lifting block and the surface of the workbench is greater than the thickness of the PCB board, a spring is arranged in the groove, one end of the spring is arranged on the inner side wall of the groove, and the other end is connected to the push plate, and when the spring is in a natural state, the bottom surface of the push plate abuts against the surface of the workbench, and the push plate is provided with a lifting inclined surface that slides with the lifting block.

[0016] By adopting the above technical solution, when the push plate moves to gradually approach the lifting block, the lifting block pushes the push plate toward the inside of the groove through the lifting inclined surface. At this time, the spring is compressed, and the bottom surface of the push plate gradually moves away from the surface of the conveying table and finally abuts against the surface of the lifting block. When the push plate moves to separate from the lifting block, the pressure on the spring disappears, and the spring pushes the push plate toward the surface of the workbench and finally abuts against the surface of the workbench. When the push plate moves to abut against the side of the PCB board, the push plate pushes the PCB board to move.

[0017] Optionally, a weight sensor is provided on the bottom surface of the collecting plate, and the weight sensor is electrically connected to the conveyor belt through a control system.

[0018] By adopting the above technical solution, when the weight sensor on the collection board detects that the PCB boards collected on the collection board have reached a specified weight, the weight sensor controls the start of the conveyor belt, and the conveyor belt transports the collection box. This setting improves the automation process of the SMT pusher, thereby further improving the collection efficiency of the PCB boards.

[0019] Optionally, a vacuum pump is provided on the collection box, and a main air pipe is provided on the suction end connecting pipe of the vacuum pump. The main air pipe extends into the side wall of the collection box, and a plurality of branch air pipes are connected to the main air pipe. A plurality of mutually connected suction ports are provided on the branch air pipes and the inner wall of the collection box, and the suction direction of the suction port is set horizontally.

[0020] By adopting the above technical solution, after the PCBs on the collection plate are collected, the vacuum pump is started. The vacuum pump creates a negative pressure environment in each sub-air pipe through the main air pipe. At this time, multiple PCBs are adsorbed on the inner wall of the collection box under the push of the negative airflow, thereby completing the fixation of the PCBs in the collection box, reducing the possibility of PCBs escaping from the collection box through the opening due to bumps during the transmission process, and thus further improving the collection efficiency of PCBs.

[0021] Optionally, rubber pads are provided on opposite surfaces of the limiting plates.

[0022] By adopting the above technical solution, the provision of the rubber pad effectively reduces the possibility of wear of the PCB boards during the transmission process, thereby ensuring the collection quality of the PCB boards.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. This application provides a limit assembly and a drive assembly. The drive assembly drives the limit assembly to limit the position of the PCB, thereby limiting the movement direction of the PCB. This prevents the PCB from deflecting due to uneven friction, thereby increasing the probability of the PCB entering the collection box smoothly and improving the collection efficiency of the PCB.

[0025] 2. This application provides a lifting assembly to prevent the push plate from always abutting against the workbench surface and obstructing the next PCB from entering the workbench. This configuration ensures smooth PCB replenishment and collection, further improving PCB collection efficiency.

[0026] 3. This application sets a lifting motor, a second screw, a second guide shaft and a collection plate. When the PCB board on the workbench enters the collection plate through the opening, the worker starts the lifting motor, and the lifting motor drives the second screw to rotate. Under the guidance of the second guide shaft, the second screw drives the collection plate to drop the thickness of one PCB in the direction away from the opening. At this time, the PCB surface on the collection plate is flush with the opening surface, and the push plate assembly pushes the next PCB board to the PCB board surface on the collection plate. This setting realizes the automatic stacking and storage of multiple PCB boards, further improving the collection efficiency of PCB boards. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of this application.

[0028] Figure 2 It is a cross-sectional view of the workbench and the frame in the embodiment of the present application.

[0029] Figure 3 It is a cross-sectional view of the collection box in the embodiment of the present application.

[0030] Figure 4 It is a cross-sectional view of the gas distribution pipe in the embodiment of the present application.

[0031] Explanation of the accompanying drawings: 01, PCB board; 1, workbench; 2, frame; 3, push plate assembly; 4, transmission belt; 5, collection box; 51, opening; 6, limit assembly; 61, limit plate; 62, rubber pad; 7, drive assembly; 101, drive slot; 102, guide slot; 71, bidirectional screw rod; 72, guide rod; 73, limit motor; 31, first screw; 32, first guide shaft; 33, push motor; 34, connecting plate; 341, groove; 35, push plate; 8, lifting assembly; 81, lifting block; 82, spring; 83, lifting ramp; 9, collection plate; 10, lifting motor; 11, second screw; 12, second guide shaft; 13, vacuum pump; 131, main air pipe; 132, air distribution pipe; 133, air inlet; 14, weight sensor. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The embodiment of the present application discloses an SMT board pusher.

[0034] Reference Figure 1 An SMT board pushing machine includes a workbench 1, the feed end of the workbench 1 is connected to the PCB board 01 conveyor belt, the workbench 1 is fixedly connected to a frame 2, the frame 2 is provided with a push plate assembly 3 for pushing the PCB board 01, the workbench 1 is provided with a conveyor belt 4 on the side away from the feed end, the conveyor belt 4 transports a collection box 5 for collecting the PCB board 01, and the collection box 5 is provided with an opening 51 that is connected to the discharge end of the workbench 1.

[0035] The PCB board 01 enters the surface of the workbench 1 through the conveyor belt, and then the push plate assembly 3 starts to push the PCB board 01. The PCB board 01 enters the collection box 5 through the opening 51 and is collected. When the PCB boards 01 in the collection box 5 are collected, the conveyor belt 4 starts to transport the collection box 5 out of the next process.

[0036] Reference Figure 1 and Figure 2 A limit assembly 6 is provided on the workbench 1. The limit assembly 6 includes two parallel limit plates 61. The two limit plates 61 are respectively provided on opposite sides of the PCB board 01. The length directions of the two limit plates 61 are parallel to the moving direction of the PCB board 01. The opposite surfaces of the two limit plates 61 are fixedly connected with rubber pads 62 to reduce the wear of the PCB board 01 during the transmission process. A driving assembly 7 is provided on the workbench 1. The driving assembly 7 drives the opposite surfaces of the two limit plates 61 to abut against the outer surface of the PCB board 01.

[0037] Reference Figure 1 and Figure 2 , a driving groove 101 and a guide groove 102 are respectively provided at the opposite ends of the workbench 1. The driving groove 101 and the guide groove 102 are arranged in parallel and the length direction is perpendicular to the moving direction of the PCB board 01. The driving assembly 7 includes a bidirectional screw rod 71 and a guide rod 72. The bidirectional screw rod 71 is rotatably connected in the driving groove 101, and the guide rod 72 is fixedly connected in the guide groove 102. One end of the two limit plates 61 is respectively threadedly connected to the two sections of the rod body with opposite threads of the bidirectional screw rod 71, and the other end is slidably connected to the guide rod 72. The two limit plates 61 are both slidably connected to the surface of the workbench 1, and a limit motor 73 for driving the bidirectional screw rod 71 to rotate is fixedly installed on the outer wall of the workbench 1.

[0038] When the PCB board 01 is moved to the workbench 1 through the conveyor belt, the operator starts the limit motor 73, and the output shaft of the limit motor 73 drives the bidirectional screw rod 71 to rotate. During the rotation of the bidirectional screw rod 71, the two limit plates 61 are driven to move toward each other. When the surfaces of the two limit plates 61 are both in contact with the outer surface of the PCB board 01, the push plate assembly 3 is started, and the push plate assembly 3 pushes the PCB board 01 to move along the workbench 1. During the movement of the PCB board 01, the limit plate 61 limits the moving direction of the PCB board 01 between the two limit plates 61. When the PCB board 01 enters the collection box 5 through the opening 51, the collection work of the PCB board 01 is completed. The setting of the limit assembly 6 realizes the restriction of the moving direction of the PCB, avoids the occurrence of deviation of the PCB board 01 due to uneven friction, thereby increasing the probability of the PCB board 01 smoothly entering the collection box 5, and the collection efficiency of the PCB board 01 is improved.

[0039] Reference Figure 1 and Figure 2 The push plate assembly 3 includes a first screw 31 and a first guide shaft 32. The first screw 31 is rotatably connected to one end of the frame 2, and the first guide shaft 32 is fixedly connected to the end of the frame 2 away from the first screw 31. The length directions of the first screw 31 and the first guide shaft 32 are parallel to the moving direction of the PCB board 01. A pushing motor 33 for driving the first screw 31 to rotate is fixedly installed on the frame 2. A connecting plate 34 is slidably connected to the frame 2. One end of the connecting plate 34 is threadedly connected to the first screw 31, and the other end is slidably connected to the first guide shaft 32. A groove 341 is provided on the surface of the connecting plate 34 facing the workbench 1, and a push plate 35 is slidably connected in the groove 341. A lifting assembly 8 for lifting the push plate 35 is provided at the end of the frame 2 away from the collection box 5.

[0040] Reference Figure 1 and Figure 2 The lifting assembly 8 includes a lifting block 81 fixedly connected to the inner wall of the frame 2. The distance between the bottom surface of the lifting block 81 and the surface of the workbench 1 is greater than the thickness of the PCB board 01. A spring 82 is provided in the groove 341. One end of the spring 82 is fixedly connected to the inner wall of the groove 341, and the other end is fixedly connected to the push plate 35. In the natural state of the spring 82, the bottom surface of the push plate 35 abuts against the surface of the workbench 1. The push plate 35 is provided with a lifting inclined surface 83 that slides with the lifting block 81. When the bottom surface of the push plate 35 abuts against the surface of the lifting block 81, the spring 82 is in a compressed state.

[0041] When the PCB board 01 is placed in the collection box 5, the worker starts the pushing motor 33 in the forward direction, and the pushing motor 33 drives the first screw 31 to rotate in the forward direction. At this time, the first screw 31 drives the pushing plate 35 to move in the direction close to the collection box 5 through the connecting plate 34. During the movement, the pushing plate 35 pushes the PCB board 01 towards the collection box 5. When the pushing plate 35 pushes the PCB board 01 into the collection box 5, the worker starts the pushing motor 33 in the reverse direction. At this time, the pushing plate 35 moves in the direction away from the collection box 5. When the pushing plate 35 moves gradually close to the lifting block 81, the lifting block 81 pushes the pushing plate 35 toward the inside of the groove 341 through the lifting inclined surface 83. At this time, the spring 82 is compressed, and the bottom surface of the pushing plate 35 gradually moves away from the surface of the conveying platform and finally abuts against the surface of the lifting block 81, thereby effectively preventing the pushing plate 35 from always abutting against the surface of the workbench 1 and hindering the next PCB board 01 from entering the workbench 1. This arrangement ensures the smooth replenishment and collection process of the PCB boards 01, and further improves the collection efficiency of the PCB boards 01.

[0042] When the push plate 35 pushes the next PCB board 01, the push plate 35 moves in the direction away from the lifting block 81. When the push plate 35 breaks away from the lifting block 81, the pressure on the spring 82 disappears, and the spring 82 pushes the push plate 35 toward the surface of the workbench 1 and finally abuts against the surface of the workbench 1. When the push plate 35 moves to abut against the side of the PCB board 01, the push plate 35 pushes the PCB board 01 to move.

[0043] Reference Figure 3 and Figure 4 A collecting plate 9 is slidably connected to the collecting box 5, and the moving direction of the collecting plate 9 is perpendicular to the length direction of the workbench 1. A lifting motor 10 is fixedly installed on the top of the collecting box 5, and the output shaft of the lifting motor 10 is coaxially fixedly connected to the second screw 11. The end of the collecting box 5 away from the second screw 11 is fixedly connected to the second guide shaft 12, and the second guide shaft 12 is arranged parallel to the second screw 11. One end of the collecting plate 9 is threadedly connected to the second screw 11, and the other end is slidably connected to the second guide shaft 12.

[0044] When the PCB board 01 on the workbench 1 passes through the opening 51 and enters the collecting plate 9, the worker starts the lifting motor 10, and the lifting motor 10 drives the second screw 11 to rotate. Under the guidance of the second guide shaft 12, the second screw 11 drives the collecting plate 9 to drop by the thickness of one PCB in the direction away from the opening 51. At this time, the PCB surface on the collecting plate 9 is flush with the surface of the opening 51, and the push plate assembly 3 pushes the next PCB board 01 to the surface of the PCB board 01 on the collecting plate 9. This arrangement realizes the automatic stacking and storage of multiple PCB boards 01, further improving the collection efficiency of the PCB boards 01.

[0045] Reference Figure 3 and Figure 4 A vacuum pump 13 is fixedly installed on the top of the collecting box 5, and the suction end of the vacuum pump 13 is connected to a main air pipe 131. The main air pipe 131 extends to the side wall of the collecting box 5 away from the opening 51. A plurality of branch air pipes 132 are connected to the main air pipe 131. The length direction of the branch air pipes 132 is perpendicular to the length direction of the main air pipe 131. A plurality of mutually connected suction ports 133 are provided on the inner wall of the collecting box 5 and the branch air pipe 132, and the suction direction of the suction port 133 is set horizontally.

[0046] After the PCB boards 01 on the collection plate 9 are collected, the vacuum pump 13 is started. The vacuum pump 13 creates a negative pressure environment in each gas distribution pipe 132 through the main gas pipe 131. At this time, the multiple PCB boards 01 are adsorbed on the inner wall of the collection box 5 under the push of the negative airflow, thereby completing the fixation of the PCB boards 01 in the collection box 5 and reducing the possibility of the PCB boards 01 escaping from the collection box 5 through the opening 51 due to bumps during the transportation process, thereby further improving the collection efficiency of the PCB boards 01.

[0047] Reference Figure 3 and Figure 4 A weight sensor 14 is fixedly connected to the bottom surface of the collection plate 9. The weight sensor 14 is electrically connected to the conveying motor of the conveyor belt 4 through the control system. When the weight sensor 14 on the collection plate 9 detects that the PCB boards 01 collected on the collection plate 9 have reached a specified weight, the weight sensor 14 controls the second motor to start, and the second motor starts the conveyor belt 4 to transport the collection box 5. This arrangement improves the automation process of the SMT push board 35 machine, thereby further improving the collection efficiency of the PCB boards 01.

[0048] The implementation principle of an SMT pusher in an embodiment of the present application is as follows: after the PCB board 01 is moved onto the workbench 1 through the conveyor belt, the operator starts the limit motor 73, and the output shaft of the limit motor 73 drives the bidirectional screw 71 to rotate. During the rotation of the bidirectional screw 71, the two limit plates 61 are driven to move toward each other. When the surfaces of the two limit plates 61 are both in contact with the outer surface of the PCB board 01, the worker starts the push motor 33 in the forward direction, and the push motor 33 drives the first screw 31 to rotate forward. At this time, the first screw 31 drives the push plate 35 to move toward the collection box 5 through the connecting plate 34. The push plate 35 pushes the PCB board 01 toward the collection box 5 during the movement. The PCB board 01 enters the collection box 5 through the opening 51 and is collected. When the PCB boards 01 in the collection box 5 are collected, the conveyor belt 4 starts to transport the collection box 5 out to the next process.

[0049] The setting of the limit component 6 realizes the restriction of the moving direction of the PCB, avoiding the occurrence of the deviation of the PCB board 01 due to uneven friction, thereby increasing the probability of the PCB board 01 smoothly entering the collection box 5 and improving the collection efficiency of the PCB board 01.

[0050] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An SMT pusher, comprising a frame (2), wherein the feed end of the frame (2) is connected to a PCB board (01) conveyor belt, characterized in that: A push plate assembly (3) for pushing the PCB board (01) is provided in the frame (2); a conveyor belt (4) is provided on one side of the workbench (1) close to the discharge end; a collection box (5) is provided on the conveyor belt (4); an opening (51) communicating with the workbench (1) is provided on the collection box (5); a limit assembly (6) is provided on the workbench (1); the limit assembly (6) comprises two parallel limit plates (61); the two limit plates (61) are respectively provided on opposite sides of the PCB board (01); the length directions of the two limit plates (61) are parallel to the moving direction of the PCB board (01); a driving assembly (7) is provided on the workbench (1); the driving assembly (7) drives the opposite surfaces of the two limit plates (61) to abut against the outer surface of the PCB board (01).

2. The SMT pusher according to claim 1, characterized in that: The workbench (1) is provided with a driving groove (101) and a guide groove (102) at opposite ends thereof, the driving assembly (7) comprises a bidirectional screw rod (71) rotatably connected to the driving groove (101), a guide rod (72) is provided in the guide groove (102), one end of the two limiting plates (61) is respectively threadedly connected to the two sections of the bidirectional screw rod (71) with opposite thread rotation directions, and the other end is slidably connected to the guide rod (72), the two limiting plates (61) are slidably connected to the driving groove (101) and the guide groove (102), and a limiting motor (73) for driving the bidirectional screw rod (71) to rotate is provided on the workbench (1).

3. The SMT pusher according to claim 1, characterized in that: A collecting plate (9) is slidably connected inside the collecting box (5), and the moving direction of the collecting plate (9) is perpendicular to the length direction of the workbench (1). A lifting motor (10) is provided on the top of the collecting box (5), and the output shaft of the lifting motor (10) is coaxially fixedly connected to a second screw (11). A second guide shaft (12) is provided at one end of the collecting box (5) away from the second screw (11). One end of the collecting plate (9) is threadedly connected to the second screw (11), and the other end is slidably connected to the second guide shaft (12).

4. The SMT pusher according to claim 1, characterized in that: The push plate assembly (3) includes a first screw (31) and a first guide shaft (32) arranged on the frame (2), the first screw (31) is rotatably connected to the frame (2), a connecting plate (34) is slidably connected to the frame (2), one end of the connecting plate (34) is threadedly connected to the first screw (31), and the other end is slidably connected to the first guide shaft (32), a groove (341) is provided on the connecting plate (34), a push plate (35) is slidably connected in the groove (341), a lifting assembly (8) for lifting the push plate (35) is provided at one end of the frame (2) away from the collection box (5), and a pushing motor (33) for driving the first screw (31) to rotate is provided on the frame (2).

5. The SMT pusher according to claim 4, characterized in that: The lifting assembly (8) includes a lifting block (81) arranged on the inner wall of the frame (2), the distance between the bottom surface of the lifting block (81) and the surface of the workbench (1) is greater than the thickness of the PCB board (01), a spring (82) is arranged in the groove (341), one end of the spring (82) is arranged on the inner wall of the groove (341), and the other end is connected to the push plate (35), when the spring (82) is in a natural state, the bottom surface of the push plate (35) abuts against the surface of the workbench (1), and the push plate (35) is provided with a lifting inclined surface (83) that slides with the lifting block (81).

6. The SMT pusher according to claim 1, characterized in that: A weight sensor (14) is provided on the bottom surface of the collecting plate (9), and the weight sensor (14) is electrically connected to the conveyor belt (4) through a control system.

7. The SMT pusher according to claim 1, characterized in that: The collecting box (5) is provided with a vacuum pump (13), and a main air pipe (131) is provided on the suction end connecting pipe of the vacuum pump (13). The main air pipe (131) extends into the side wall of the collecting box (5). A plurality of branch air pipes (132) are connected to the main air pipe (131). A plurality of mutually connected suction ports (133) are provided on the branch air pipes (132) and the inner side wall of the collecting box (5). The suction direction of the suction ports (133) is arranged horizontally.

8. The SMT pusher according to claim 1, characterized in that: The surfaces opposite to the limiting plates (61) are both provided with rubber pads (62).

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