Plate pushing device of SMT plate unloading machine
By improving the design of the pusher device, and utilizing the combination of spring buffer and limiting plate, the stability and accuracy problems of traditional pusher devices when pushing PCB boards over long distances are solved, achieving more efficient and stable PCB board transmission.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN HUAYUAN AUTOMATION EQUIP CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-05-15
AI Technical Summary
Traditional pusher devices are prone to collisions and jamming between the edges and the slides when pushing PCBs over long distances due to wear, dust accumulation, or board warping. This can even cause the board surface to twist, and the transmission is unstable, affecting production efficiency.
The design incorporates components such as a convex groove, slider, motor, lead screw, push plate, and spring. Through the cooperation of spring buffer and limit plate, it achieves smooth pushing, reduces hard contact and position deviation, and improves transmission accuracy.
It effectively reduces PCB edge scratches and component damage, improves transmission efficiency, reduces board jamming and pushing failures, and ensures stable movement of the PCB within the chute.
Smart Images
Figure CN224242128U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of electronic manufacturing equipment technology, specifically a pusher device for an SMT unloading machine. Background Technology
[0002] The pusher unit of an SMT unloading machine is a mechanical device used in surface mount technology production lines to push PCB boards that have completed welding, inspection and other processes from the conveyor track to the target storage position.
[0003] Its core function is to transfer PCB boards precisely and smoothly from the conveying terminal to the receiving mechanism through mechanical transmission. It is a key execution component in the "unpacking" stage of the SMT production line.
[0004] Traditional pusher devices typically have a fixed pusher stroke. When a single pusher moves back and forth, the PCB board needs to be pushed a long distance in the chute. If there is slight wear or dust accumulation in the chute, or if the PCB board itself is slightly warped, the long-distance friction will gradually amplify the offset, causing the edge of the PCB board to collide with or get stuck against the side wall of the chute, or even cause the board surface to twist due to uneven force.
[0005] Therefore, this utility model provides a pusher device for an SMT unloading machine. Utility Model Content
[0006] To overcome the shortcomings of the existing technology and solve at least one of the problems mentioned in the background technology, a pusher device for an SMT unloading machine is proposed.
[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: The pusher device of an SMT unloading machine according to this utility model includes a worktable; a convex groove is fixedly connected to the top of the worktable; two symmetrically arranged first grooves are opened on the top of the worktable near the convex groove; a motor is fixedly connected to the side wall of the worktable near the first groove; a lead screw is fixedly connected to the output end of the motor; a slider is slidably connected to the middle of the lead screw; a slide rod is fixedly connected to the middle of the slider, and the slide rod passes through the convex groove; a first pusher plate is fixedly connected to the end of the slide rod near the convex groove; two symmetrically arranged first fixing bolts are fixedly connected to the side wall of the slider; two symmetrically arranged second fixing bolts are fixedly connected to the side wall of the worktable away from the slider, and the second fixing bolts are opposite to the first fixing bolts. A first spring is fixedly connected to the middle of the first fixing bolt and the second fixing bolt; two symmetrically arranged first electric push rods are fixedly connected to the side wall of the convex slide groove near the second fixing bolt; a second push rod is fixedly connected to the movable end of the first electric push rod; a discharge port is opened in the middle of the convex slide groove away from the first electric push rod; a feeding assembly is installed on the top of the convex slide groove near the sliding rod; a limit assembly is opened in the middle of the convex slide groove near the feeding assembly; through the above structure, the cooperation of the first fixing bolt, the second fixing bolt and the first spring can effectively make the pushing action smoother, the buffering effect of the first spring can reduce the situation of hard contact between the first push plate and the PCB board causing scratches on the edge of the PCB board and damage to surface components, and the relay pushing design of the first push plate and the first electric push rod can effectively improve the working efficiency of the device.
[0008] Preferably, two symmetrically arranged second sluices are formed in the middle of the convex sluice near the discharge port; two symmetrically arranged second springs are fixedly connected to the middle of the second sluice; and a limiting plate is fixedly connected to the end of the second spring away from the convex sluice. With the above structure, the cooperation of the second spring and the limiting plate can automatically calibrate and guide the position of the PCB board during the movement of the PCB board, reducing problems such as board jamming and pushing failure caused by position deviation.
[0009] Preferably, a placement groove is fixedly connected to the bottom of the workbench near the first push plate; two symmetrically arranged second electric push rods are fixedly connected to the middle of the placement groove; a placement plate is fixedly connected to the movable end of the second electric push rod; with the above structure, the problem of chipping or missing corners of the PCB board when it slides directly to the top of the convex slide groove due to the height difference of the unloading components can be effectively reduced.
[0010] Preferably, the limiting component includes a third slide groove; two symmetrically arranged third slide grooves are opened near the middle of the first push plate; two symmetrically arranged limiting blocks are fixed to the side wall of the first push plate near the third slide groove; with the above structure, the offset, shaking or tilting of the first push plate during sliding can be effectively reduced, and the problem of directional deviation of the PCB board during pushing caused by the offset of the first push plate can be prevented.
[0011] Preferably, the feeding assembly includes a guide plate; the guide plate is fixedly connected to the top of the convex chute near the first push plate; through the above structure, the friction or even jamming caused by the PCB board position offset with the inner wall of the device and the edge of the track can be effectively reduced, which may lead to transmission interruption and equipment shutdown.
[0012] Preferably, a protective pad is fixed to the side wall of the second push rod away from the first electric push rod; the protective pad is made of silicone material; through the above structure, the problem of scratches and damage to the edge of the PCB board caused by the rigid impact force generated by the inertia when the second push rod pushes the PCB board can be effectively prevented.
[0013] The beneficial effects of this utility model are as follows:
[0014] 1. The pusher device of the SMT unloading machine described in this utility model can effectively make the pushing action smoother by using the cooperation of the first fixing bolt, the second fixing bolt and the first spring. The buffering effect of the first spring can reduce the situation of hard contact between the first pusher and the PCB board, which may cause scratches on the edge of the PCB board and damage to surface components. In addition, the relay pushing design of the first pusher and the first electric push rod can effectively improve the working efficiency of the device.
[0015] 2. The pusher device of the SMT unloading machine described in this utility model can automatically calibrate and guide the position of the PCB board during the movement of the PCB board by using the cooperation of the second spring and the limiting plate, thereby reducing problems such as board jamming and push failure caused by position deviation. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings.
[0017] Figure 1 This is a perspective view of the present invention;
[0018] Figure 2 This is a schematic diagram of the structure of the first fixing bolt and the first spring in this utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the second sliding groove and the second spring in this utility model;
[0020] Figure 4This is a schematic diagram of the structure of the second electric actuator and the placement plate in this utility model.
[0021] Legend:
[0022] 1. Workbench; 11. Convex groove; 12. Motor; 13. Lead screw; 14. Slider; 15. First fixing bolt; 16. First spring; 17. Slide rod; 18. First push plate; 19. First electric push rod; 110. Second push rod; 111. First groove; 112. Second fixing bolt; 113. Discharge port; 114. Unloading assembly; 115. Limiting assembly; 2. Second groove; 21. Second spring; 22. Limiting plate; 3. Placement groove; 31. Second electric push rod; 32. Placement plate; 4. Third groove; 41. Limiting block; 5. Guide plate; 6. Protective pad; 7. Shock-absorbing pad. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0024] Specific implementation examples are given below.
[0025] like Figures 1 to 4As shown in the embodiment of this utility model, a pusher device for an SMT unloading machine includes a workbench 1; a convex groove 11 is fixedly connected to the top of the workbench 1; two symmetrically arranged first grooves 111 are opened on the top of the workbench 1 near the convex groove 11; a motor 12 is fixedly connected to the side wall of the workbench 1 near the first groove 111; a lead screw 13 is fixedly connected to the output end of the motor 12; a slider 14 is slidably connected to the middle of the lead screw 13; a slide rod 17 is fixedly connected to the middle of the slider 14, and the slide rod 17 passes through the convex groove 11; a first pusher plate 18 is fixedly connected to the end of the slide rod 17 near the convex groove 11; two symmetrically arranged first grooves 18 are fixedly connected to the side wall of the slider 14. The first fixing bolt 15 is provided; two symmetrically arranged second fixing bolts 112 are fixed to the side wall of the worktable 1 away from the slider 14, and the second fixing bolts 112 are opposite to the first fixing bolt 15; a first spring 16 is fixed to the middle of the first fixing bolt 15 and the second fixing bolt 112; two symmetrically arranged first electric push rods 19 are fixed to the side wall of the convex slide 11 near the second fixing bolts 112; a second push rod 110 is fixed to the movable end of the first electric push rod 19; a discharge port 113 is opened in the middle of the convex slide 11 away from the first electric push rod 19; a feeding assembly 114 is installed on the top of the convex slide 11 near the slide rod 17; the convex slide... A limiting component 115 is provided in the middle of the groove 11 near the unloading assembly 114. During operation, after the PCB board falls to the top of the worktable 1 through the unloading assembly 114, the motor 12 is started. The output end of the motor 12 drives the lead screw 13 to rotate, causing the slider 14 to move linearly along the lead screw 13 in the middle of the first groove 111. As the slider 14 slides forward, the first push plate 18 at the end of the slide rod 17 gradually approaches the PCB board until it contacts it and pushes it forward. At this time, the first spring 16 is in a compressed state, which plays a buffering role. When the first push plate 18 is constrained by the limiting component 115, the PCB board is in a predetermined position, and its side... When the wall contacts the second push rod 110, the first electric push rod 19 is activated. The movable end of the first electric push rod 19 drives the second push rod 110 to continue pushing the PCB board forward along the predetermined direction until the PCB board is pushed out of the discharge port 113. Through the above structure, the cooperation of the first fixing bolt 15, the second fixing bolt 112 and the first spring 16 can effectively make the pushing action smoother. The buffering effect of the first spring 16 can reduce the situation of hard contact between the first push plate 18 and the PCB board, which may cause scratches on the edge of the PCB board and damage to surface components. In addition, the relay pushing design of the first push plate 18 and the first electric push rod 19 can effectively improve the working efficiency of the device.
[0026] like Figures 1 to 3As shown, two symmetrically arranged second slides 2 are opened in the middle of the convex slide 11 near the discharge port 113; two symmetrically arranged second springs 21 are fixed in the middle of the second slide 2; a limiting plate 22 is fixed to the end of the second spring 21 away from the convex slide 11; during operation, because the end of the limiting plate 22 near the PCB board spreads outward, when the second push rod 110 continuously pushes the PCB board to slide in the middle of the convex slide 11, it will gradually approach and contact the limiting plate 22, which can adapt to PCB boards of different sizes. As the PCB board gets closer to the discharge port 113, the elasticity of the second spring 21 can make the limiting plate 22 self-adaptively adjust, so that the limiting plate 22 always guides the PCB board. Through the above structure, the cooperation of the second spring 21 and the limiting plate 22 can automatically calibrate and guide the position of the PCB board during the movement of the PCB board, reducing problems such as board jamming and pushing failure caused by position deviation.
[0027] like Figures 3 to 4 As shown, a placement groove 3 is fixedly connected to the bottom of the workbench 1 near the first push plate 18; two symmetrically arranged second electric push rods 31 are fixedly connected to the middle of the placement groove 3; a placement plate 32 is fixedly connected to the movable end of the second electric push rod 31; during operation, the second electric push rod 31 is activated, and the movable end of the second electric push rod 31 drives the placement plate 32 to slide upward to a suitable height. When the PCB board slides down through the guide plate 5, it will first fall to the top of the placement plate 32, and then slowly descend through the second electric push rod 31 until it is flush with the surface of the convex slide groove 11. Then, the first push plate 18 pushes it. Through the above structure, the problem of the PCB board edge or corner hitting the edge of the slide groove when the PCB board slides directly to the top of the convex slide groove 11 due to the height difference of the unloading component 114 can be effectively reduced, which causes the board to chip or be missing corners.
[0028] like Figures 2 to 3 As shown, the limiting component 115 includes a third slide groove 4; two symmetrically arranged third slide grooves 4 are opened in the middle of the convex slide groove 11 near the first push plate 18; two symmetrically arranged limiting blocks 41 are fixed to the side wall of the first push plate 18 near the third slide groove 4; during operation, when the PCB board enters the middle of the convex slide groove 11 through the unloading component 114, the first push plate 18 is pushed forward by the drive of the lead screw 13. At this time, the limiting blocks 41 on both sides of the first push plate 18 slide synchronously along the preset path of the third slide groove 4, which plays a limiting and constraining role on the first push plate 18. Through the above structure, the offset, shaking or tilting of the first push plate 18 during sliding can be effectively reduced, and the problem of directional deviation of the PCB board during pushing caused by the offset of the first push plate 18 can be prevented.
[0029] like Figure 3As shown, the unloading assembly 114 includes a guide plate 5; the guide plate 5 is fixedly connected to the top of the convex chute 11 near the first push plate 18; during operation, when the PCB board enters the push plate device from the conveyor belt or printing machine, it will contact the guide plate 5 first. The guide plate 5 can "correct" it to the middle of the convex chute 11, ensuring that the PCB board enters the push plate area along the correct path. Through the above structure, the friction or even jamming caused by the PCB board position deviation with the inner wall of the device or the edge of the track can be effectively reduced, which may lead to transmission interruption and equipment shutdown.
[0030] like Figure 2 As shown, a protective pad 6 is fixed to the side wall of the second push rod 110 away from the first electric push rod 19; the protective pad 6 is made of silicone; during operation, when the first electric push rod 19 drives the second push rod 110 to push the PCB board forward, the protective pad 6 will first contact the PCB board, reducing the hard contact between the PCB edge and the second push rod 110. Through the above structure, the problem of scratches and damage to the PCB board edge caused by the rigid impact force generated by the inertia when the second push rod 110 pushes the PCB board can be effectively prevented.
[0031] like Figure 1 As shown, a shock-absorbing pad 7 is fixedly connected to the middle of the flow guide plate 5; the shock-absorbing pad 7 is made of rubber; when the PCB board comes into contact with the shock-absorbing pad 7 during operation, the shock-absorbing pad 7 can generate a buffering effect and protect it. Through the above structure, the problem of the PCB board being damaged when it falls to the top of the flow guide plate 5 and falls to the outside of the convex slide groove 11 due to inertial impact can be effectively prevented.
[0032] During operation, after the PCB board falls onto the top of the worktable 1 via the unloading assembly 114, the motor 12 is started. The output end of the motor 12 drives the lead screw 13 to rotate, causing the slider 14 to move linearly along the lead screw 13 in the middle of the first slide groove 111. As the slider 14 slides forward, the first push plate 18 at the end of the slide rod 17 gradually approaches the PCB board until it contacts it and pushes it forward. At this time, the first spring 16 is compressed, which plays a buffering role. When the first push plate 18 is constrained by the limiting assembly 115, the PCB board is in a predetermined position, and its sidewall contacts the second push rod 110. The first electric push rod 19 is activated. The movable end of the first electric push rod 19 drives the second push rod 110 to continue pushing the PCB board forward along the predetermined direction until the PCB board is pushed out of the discharge port 113. Because the end of the limiting plate 22 near the PCB board spreads outward, as the second push rod 110 continues to push the PCB board to slide in the middle of the convex groove 11, it will gradually approach and contact the limiting plate 22, which can accommodate PCB boards of different sizes. As the PCB board gets closer to the discharge port 113, the elasticity of the second spring 21 allows the limiting plate 22 to self-adjust, so that the limiting plate 22 always faces P. The CB board guides the second electric push rod 31, which drives the placement plate 32 to slide upward to a suitable height. When the PCB board slides down through the guide plate 5, it will first fall to the top of the placement plate 32, and then slowly descend through the second electric push rod 31 until it is flush with the surface of the convex slide groove 11. Then, the first push plate 18 pushes it. When the PCB board enters the middle of the convex slide groove 11 through the unloading assembly 114, the first push plate 18 is driven by the lead screw 13 to push the PCB board forward. At this time, the limiting blocks 41 on both sides of the first push plate 18 move synchronously along the third slide groove 4. The preset path of the slide acts as a limiting constraint on the first push plate 18. When the PCB board enters the push plate device from the conveyor belt or printing machine, it will first contact the guide plate 5. The guide plate 5 can "correct" it to the middle of the convex slide groove 11, ensuring that the PCB board enters the push plate area along the correct path. When the first electric push rod 19 drives the second push rod 110 to push the PCB board forward, the protective pad 6 will first contact the PCB board, reducing the hard contact between the PCB edge and the second push rod 110. When the PCB board contacts the shock-absorbing pad 7, the shock-absorbing pad 7 can generate a buffering effect and protect it.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A pusher device for an SMT unloading machine, comprising a worktable (1); characterized in that: The top of the workbench (1) is fixedly connected to a convex slide groove (11); two symmetrically arranged first slide grooves (111) are opened on the top of the workbench (1) near the convex slide groove (11); a motor (12) is fixedly connected to the side wall of the workbench (1) near the first slide groove (111); a lead screw (13) is fixedly connected to the output end of the motor (12); a slider (14) is slidably connected to the middle of the lead screw (13); a slide rod (17) is fixedly connected to the middle of the slider (14), and the slide rod (17) passes through the convex slide groove (11); a first push plate (18) is fixedly connected to the end of the slide rod (17) near the convex slide groove (11); two symmetrically arranged first fixing bolts (15) are fixedly connected to the side wall of the slider (14); the side wall of the workbench (1) away from the slider (14) Two symmetrically arranged second fixing bolts (112) are fixedly connected, and the second fixing bolts (112) are opposite to the first fixing bolts (15); a first spring (16) is fixedly connected to the middle of the first fixing bolts (15) and the second fixing bolts (112); two symmetrically arranged first electric push rods (19) are fixedly connected to the side wall of the convex groove (11) near the second fixing bolts (112); a second push rod (110) is fixedly connected to the movable end of the first electric push rods (19); a discharge port (113) is opened in the middle of the convex groove (11) away from the first electric push rods (19); a feeding assembly (114) is installed on the top of the convex groove (11) near the slide rod (17); a limit assembly (115) is opened in the middle of the convex groove (11) near the feeding assembly (114).
2. The pusher device for an SMT unloading machine according to claim 1, characterized in that: The convex chute (11) has two symmetrically arranged second chute (2) in the middle of the outlet (113); two symmetrically arranged second springs (21) are fixed in the middle of the second chute (2); and a limit plate (22) is fixed in the end of the second spring (21) away from the convex chute (11).
3. The pusher device for an SMT unloading machine according to claim 2, characterized in that: The workbench (1) has a placement groove (3) fixedly connected to the bottom near the first push plate (18); two second electric push rods (31) arranged symmetrically are fixedly connected to the middle of the placement groove (3); and a placement plate (32) is fixedly connected to the movable end of the second electric push rod (31).
4. The pusher device for an SMT unloading machine according to claim 3, characterized in that... The limiting component (115) includes a third slide groove (4); the convex slide groove (11) has two symmetrically arranged third slide grooves (4) near the middle of the first push plate (18); the first push plate (18) has two symmetrically arranged limiting blocks (41) fixed to the side wall near the third slide groove (4).
5. The pusher device for an SMT unloading machine according to claim 4, characterized in that: The feeding assembly (114) includes a guide plate (5); the convex chute (11) is fixedly connected to the guide plate (5) near the top of the first push plate (18).
6. The pusher device for an SMT unloading machine according to claim 5, characterized in that: The second push rod (110) has a protective pad (6) fixed to the side wall away from the first electric push rod (19); the protective pad (6) is made of silicone.
7. The pusher device for an SMT unloading machine according to claim 6, characterized in that: A shock-absorbing pad (7) is fixedly connected to the middle of the guide plate (5); the shock-absorbing pad (7) is made of rubber.