Correction assembly for chip mounter

Abstract

The utility model relates to the technical field of chip mounters, in particular to a correction assembly for a chip mounter, which comprises a conveyor belt and retainers positioned on two sides of the conveyor belt, a substrate is arranged in the middle of each retainer, the lower part of each substrate is in contact with the conveyor belt, and positioning holes are arranged at four corners of the top of each substrate. An air cylinder is arranged below the positioning hole and corresponds to the positioning hole, and one side of the air cylinder is fixed to the bottom of the holder through a mounting frame. The pneumatic shaft is opened to push the movable blocks on the two sides to contact with the inner side of the positioning hole outwards, so that the axis of the through hole coincides with the axis of the positioning hole, and laser of the laser transmitter is emitted through the through hole and the positioning hole to be matched with the photoelectric sensor on one side of the suction head. And when the laser beam passing through the through hole cannot pass through the attenuation sheet to enter the receiving end of the photoelectric sensor, the position of the substrate is proved to have deviation, and the conveying belt needs to be finely adjusted for adjustment.

Description

Technical Field

[0001] This utility model relates to the field of pick and place machine technology, specifically a calibration component for a pick and place machine. Background Technology

[0002] A common calibration component for pick-and-place machines is the vision calibration system. Using cameras and image processing technology, it identifies and calibrates the precise positions of the PCB board and components. Calibration components for pick-and-place machines are primarily used to ensure the accuracy and stability of the equipment during high-speed component placement. By identifying calibration points, the vision calibration system ensures that the placement head accurately places the components in the predetermined positions, improving placement accuracy and efficiency while reducing errors.

[0003] Before performing surface mount technology (SMT) on a PCB board, a calibration component for a surface mount machine, as disclosed in CN222674839U, can be used. This application uses a laser emitter located below an air shaft and a photoelectric sensor on the suction head that cooperates with a through hole to adjust the initial position of the substrate, thus quickly adjusting the substrate position. After adjusting the substrate, the surface mount operation needs to be performed. Since surface mount requires high precision, the substrate position is prone to shifting back and forth during the surface mount process, which can easily affect the accuracy of surface mount and cause result deviation.

[0004] In summary, we provide a calibration component for a pick-and-place machine. Utility Model Content

[0005] The purpose of this invention is to provide a calibration component for a pick-and-place machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A calibration assembly for a pick and place machine includes a conveyor belt and retainers on both sides of the conveyor belt. A base plate is disposed in the middle of the retainer. The lower part of the base plate contacts the conveyor belt. Positioning holes are provided at the four corners of the top of the base plate. A cylinder is disposed below the positioning hole and corresponding to the position of the positioning hole. One side of the cylinder is fixed to the bottom of the retainer by a mounting bracket.

[0008] Preferably, a laser emitter is provided on the top of the cylinder, and an air shaft is provided on the top of the laser emitter. The periphery of the air shaft abuts against the positioning hole, and a through hole is provided at the axis of the air shaft.

[0009] Preferably, a guide rail is provided on the top of one side of the holder, and a suction head is slidably connected to the guide rail. A photoelectric sensor that cooperates with a laser emitter is fixed to one side of the suction head by bolts, and an attenuator is provided at the receiving end of the photoelectric sensor.

[0010] Preferably, each of the two retainers on both sides of the conveyor belt has a movable groove in the middle. A first pressure plate and a second pressure plate are respectively installed inside the movable grooves on both sides. Two fixed slide rods are symmetrically inserted on both sides of the first pressure plate and the second pressure plate. Both ends of the fixed slide rods are fixedly connected to the retainer.

[0011] Preferably, a first lead screw and a second lead screw are respectively passed through the middle part of the first pressure plate and the second pressure plate. A second bevel gear and a fourth bevel gear are respectively fixed at the bottom end of the first lead screw and the second lead screw. A first bevel gear and a third bevel gear are respectively provided on one side of the second bevel gear and the fourth bevel gear. The second bevel gear and the fourth bevel gear mesh with the first bevel gear and the third bevel gear respectively.

[0012] Preferably, the first bevel gear is fixedly connected to the third bevel gear via a drive shaft, one end of the drive shaft passes through a retainer and is fixed with a second gear, and the bottom of the second gear is provided with a first gear, and the first gear meshes with the second gear.

[0013] Preferably, one side of the first bevel gear is fixedly connected to the drive motor, and the drive motor is fixed to the bottom of the retainer on one side of the conveyor belt by bolts.

[0014] The working principle and beneficial effects of this utility model are as follows:

[0015] This invention opens the air shaft and pushes the movable blocks on both sides outward to contact the inner side of the positioning hole, so that the axis of the through hole and the positioning hole coincide. The laser of the laser emitter is emitted through the through hole and the positioning hole and cooperates with the photoelectric sensor on the side of the suction head. The positioning efficiency of the substrate can be improved by the four air shafts and the laser emitter set at the four corners of the bottom of the substrate.

[0016] This invention uses the rotation of the first lead screw and the second lead screw to drive the first pressure plate and the second pressure plate to move up and down through the fixed slide rod to clamp and fix the PLC board that needs to be patched, so as to prevent the PLC board from moving during the patching process and causing the patching result to be offset. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the bottom structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the cylinder structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the suction head structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the transmission shaft structure of this utility model.

[0022] In the diagram: 1. Conveyor belt; 2. Holder; 3. Base plate; 4. Positioning hole; 5. Guide rail; 6. Suction head; 7. Photoelectric sensor; 8. Attenuator; 9. Mounting bracket; 10. Cylinder; 11. Laser emitter; 12. Air shaft; 13. Through hole; 14. Movable groove; 15. First pressure plate; 16. Second pressure plate; 17. Drive motor; 18. First gear; 19. Second gear; 20. First bevel gear; 21. Second bevel gear; 22. First lead screw; 23. Drive shaft; 24. Third bevel gear; 25. Fourth bevel gear; 26. Second lead screw; 27. Fixed slide bar. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1-5 As shown, a calibration assembly for a pick and place machine includes a conveyor belt 1 and a retainer 2 located on both sides of the conveyor belt 1. A substrate 3 is disposed in the middle of the retainer 2. The lower part of the substrate 3 contacts the conveyor belt 1. Positioning holes 4 are provided at the four corners of the top of the substrate 3. A cylinder 10 is disposed below the positioning hole 4 corresponding to the position of the positioning hole 4. One side of the cylinder 10 is fixed to the bottom of the retainer 2 by a mounting bracket 9.

[0025] like Figure 3 and Figure 4 As shown, a laser emitter 11 is provided on the top of the cylinder 10, and an air shaft 12 is provided on the top of the laser emitter 11. The periphery of the air shaft 12 abuts against the positioning hole 4, and a through hole 13 is provided at the axis of the air shaft 12.

[0026] A guide rail 5 is provided on the top of one side of the retainer 2. A suction head 6 is slidably connected to the guide rail 5. A photoelectric sensor 7 that cooperates with the laser emitter 11 is fixed to one side of the suction head 6 by bolts. An attenuator 8 is provided at the receiving end of the photoelectric sensor 7.

[0027] In this embodiment, the substrate 3 is placed in the middle of the holder 2. The suction head 6 can be moved by the guide rail 5 on one side of the suction head 6. The cylinder 10 at the bottom of the substrate 3 is opened. The cylinder 10 pushes the air shaft 12 into the interior of the positioning hole 4. The air shaft 12 pushes the movable blocks on both sides to contact the inner side of the positioning hole 4, so that the axis of the through hole 13 coincides with that of the positioning hole 4. The laser of the laser emitter 11 is emitted through the through hole 13 and the positioning hole 4 and cooperates with the photoelectric sensor 7 on one side of the suction head 6. The light from the laser emitter 11 is reduced by the attenuation plate 8 set at the receiving end of the photoelectric sensor 7, thereby reducing the amount of light entering the laser emitter 11. On the one hand, it can avoid the influence of weak natural light on the device, and on the other hand, it can reduce the influence of the laser beam on the photoelectric sensor 7. When the laser beam through the through hole 13 cannot pass through the attenuation plate 8 to enter the receiving end of the photoelectric sensor 7, it proves that there is a deviation in the position of the substrate 3, and the conveyor belt 1 needs to be adjusted.

[0028] like Figure 1 and Figure 5 As shown, movable slots 14 are provided in the middle of the retainers 2 on both sides of the conveyor belt 1. A first pressure plate 15 and a second pressure plate 16 are respectively provided inside the movable slots 14 on both sides. Two fixed slide rods 27 are symmetrically passed through both sides of the first pressure plate 15 and the second pressure plate 16. Both ends of the fixed slide rods 27 are fixedly connected to the retainer 2.

[0029] The first pressure plate 15 and the second pressure plate 16 are respectively provided with a first lead screw 22 and a second lead screw 26 in the middle part. The bottom ends of the first lead screw 22 and the second lead screw 26 are respectively fixed with a second bevel gear 21 and a fourth bevel gear 25. A first bevel gear 20 and a third bevel gear 24 are respectively provided on one side of the second bevel gear 21 and the fourth bevel gear 25. The second bevel gear 21 and the fourth bevel gear 25 mesh with the first bevel gear 20 and the third bevel gear 24 respectively.

[0030] The first bevel gear 20 is fixedly connected to the third bevel gear 24 via the drive shaft 23. One end of the drive shaft 23 passes through the retainer 2 and is fixed with the second gear 19. The bottom of the second gear 19 is provided with the first gear 18, and the first gear 18 meshes with the second gear 19.

[0031] One side of the first bevel gear 20 is fixedly connected to the drive motor 17, and the drive motor 17 is fixed to the bottom of the retainer 2 on one side of the conveyor belt 1 by bolts.

[0032] In this embodiment, the drive motor 17 is turned on, which drives the first gear 18 to rotate. The rotation of the first gear 18 drives the second gear 19 to rotate, which in turn drives the transmission shaft 23 to rotate. The rotation of the transmission shaft 23 drives the first bevel gear 20 and the third bevel gear 24 to rotate. The rotation of the first bevel gear 20 and the third bevel gear 24 drives the second bevel gear 21 and the fourth bevel gear 25 to rotate, respectively. The rotation of the second bevel gear 21 and the fourth bevel gear 25 drives the first lead screw 22 and the second lead screw 26 to rotate, respectively. The rotation of the first lead screw 22 and the second lead screw 26 drives the first pressure plate 15 and the second pressure plate 16 to move up and down through the fixed slide bar 27 to clamp and fix the PLC board to be patched, so as to prevent the PLC board from moving during the patching process and causing the patching result to be offset.

[0033] In summary, the working principle is as follows:

[0034] First, a calibration component for a pick-and-place machine, as disclosed in CN222674839U, is used. This application uses a laser emitter below an air shaft and a photoelectric sensor on the pick-and-place head that mates with a through-hole to adjust the initial position of the substrate, achieving quick substrate position adjustment. However, when using this method for pick-and-place operations, the substrate position is prone to back-and-forth movement, which can affect placement accuracy. Therefore, the drive motor 17 is activated, which drives the first gear 18 to rotate. The rotation of the first gear 18 drives the second gear 19 to rotate, and the rotation of the second gear 19 drives the transmission shaft 23. The rotation of the drive shaft 23 drives the first bevel gear 20 and the third bevel gear 24 to rotate. The rotation of the first bevel gear 20 and the third bevel gear 24 drives the second bevel gear 21 and the fourth bevel gear 25 to rotate. The rotation of the second bevel gear 21 and the fourth bevel gear 25 drives the first lead screw 22 and the second lead screw 26 to rotate. The rotation of the first lead screw 22 and the second lead screw 26 drives the first pressure plate 15 and the second pressure plate 16 to move up and down through the fixed slide rod 27 to clamp and fix the PLC board that needs to be patched, so as to prevent the PLC board from moving during the patching process and causing the patching result to be offset.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A calibration assembly for a pick-and-place machine, comprising a conveyor belt (1) and retainers (2) located on both sides of the conveyor belt (1), characterized in that: The holder (2) has a base plate (3) in the middle. The bottom of the base plate (3) is in contact with the conveyor belt (1). The four corners of the top of the base plate (3) are provided with positioning holes (4). A cylinder (10) is provided below the positioning hole (4) corresponding to the position of the positioning hole (4). One side of the cylinder (10) is fixed to the bottom of the holder (2) by a mounting bracket (9).

2. The calibration component for a pick-and-place machine according to claim 1, characterized in that: A laser emitter (11) is provided on the top of the cylinder (10), and an air shaft (12) is provided on the top of the laser emitter (11). The periphery of the air shaft (12) abuts against the positioning hole (4), and a through hole (13) is provided at the axis of the air shaft (12).

3. The calibration component for a pick-and-place machine according to claim 1, characterized in that: A guide rail (5) is provided on the top of one side of the retainer (2). A suction head (6) is slidably connected to the guide rail (5). A photoelectric sensor (7) that cooperates with the laser emitter (11) is fixed to one side of the suction head (6) by bolts. An attenuator (8) is provided at the receiving end of the photoelectric sensor (7).

4. A calibration component for a pick-and-place machine according to claim 1, characterized in that: The conveyor belt (1) has movable slots (14) in the middle of the retainers (2) on both sides. The movable slots (14) on both sides are respectively provided with a first pressure plate (15) and a second pressure plate (16). Two fixed slide rods (27) are symmetrically inserted on both sides of the first pressure plate (15) and the second pressure plate (16). Both ends of the fixed slide rods (27) are fixedly connected to the retainer (2).

5. A calibration component for a pick-and-place machine according to claim 4, characterized in that: The first pressure plate (15) and the second pressure plate (16) are respectively provided with a first lead screw (22) and a second lead screw (26). The bottom ends of the first lead screw (22) and the second lead screw (26) are respectively fixed with a second bevel gear (21) and a fourth bevel gear (25). A first bevel gear (20) and a third bevel gear (24) are respectively provided on one side of the second bevel gear (21) and the fourth bevel gear (25). The second bevel gear (21) and the fourth bevel gear (25) mesh with the first bevel gear (20) and the third bevel gear (24) respectively.

6. A calibration component for a pick-and-place machine according to claim 5, characterized in that: The first bevel gear (20) is fixedly connected to the third bevel gear (24) via a drive shaft (23). One end of the drive shaft (23) passes through a retainer (2) and is fixed with a second gear (19). The bottom of the second gear (19) is provided with a first gear (18), and the first gear (18) meshes with the second gear (19).

7. A calibration assembly for a pick-and-place machine according to claim 6, characterized in that: One side of the first bevel gear (20) is fixedly connected to the drive motor (17), which is fixed to the bottom of the retainer (2) on one side of the conveyor belt (1) by bolts.

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