An automatic sorting device for electronic components

Abstract

This invention provides an automatic sorting device for electronic components, relating to the field of automated detection and sorting equipment technology. The automatic sorting device includes a frame, with a flexible adsorption mechanism located at the upper center of the frame. A feeding conveyor belt is located on one side, and a turntable conveyor mechanism is located on the other side. The turntable conveyor mechanism includes a rotating disk, with a feeding station, a detection station, and a discharging station sequentially arranged around its edge. In this invention, the flexible adsorption mechanism, which spans across the frame, utilizes the rotation of a crossbeam to achieve alternating loading and unloading at both ends, eliminating the idle return wait of traditional mechanisms and significantly improving throughput efficiency. Simultaneously, by combining flexible silicone microporous adsorption with multi-angle visual detection in a static state, it effectively solves the problems of easily falling off irregularly shaped components and blurred dynamic imaging, achieving highly compatible, non-destructive, and high-precision automated sorting of electronic components.

Description

Technical Field

[0001] This invention relates to the field of automated testing and sorting equipment technology, specifically to an automatic sorting device for electronic components. Background Technology

[0002] In modern manufacturing of electronic components, appearance and dimensional inspection are core aspects of ensuring product quality. Currently, the industry commonly employs an automated production line model of "linear conveyor plus multi-station transfer" for the inspection and sorting of these micro-components. This involves sequentially conveying components to multiple independent stations, such as loading, visual inspection, good product collection, and defective product rejection. Various transfer mechanisms facilitate the exchange and transfer of materials between these stations, ultimately achieving automated batch sorting.

[0003] However, existing automated sorting devices still have many shortcomings in actual operation: First, the transfer mechanisms between workstations are mostly single-end reciprocating motions, resulting in a large idle return time, which limits the overall turnover efficiency; second, conventional adsorption mechanisms have poor compatibility when dealing with components of different shapes, and are prone to poor adhesion or material falling off midway; finally, in the visual inspection stage, components often cannot remain absolutely still during image acquisition, resulting in poor imaging quality, which in turn affects the final accuracy of sorting good and defective products.

[0004] Therefore, those skilled in the art have provided an automatic sorting device for electronic components to solve the problems mentioned in the background art. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an automatic sorting device for electronic components, which solves the problems of low handling efficiency, easy dropping of irregularly shaped components during handling, and inaccurate sorting caused by blurred dynamic detection images.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An automatic sorting device for electronic components includes a frame, a flexible adsorption mechanism is provided at the middle of the upper end of the frame, a feeding conveyor belt is provided on one side, and a turntable conveyor mechanism is provided on the other side. The turntable conveying mechanism includes a rotating disk, and the edge of the rotating disk is sequentially surrounded by a loading station, a detection station and a unloading station. The flexible adsorption mechanism includes a column and a crossbeam rotatably connected to the column via a rotating shaft. The crossbeam spans between the feeding conveyor belt and the turntable conveyor mechanism, and the two ends of the crossbeam are always positioned above the receiving area of ​​the feeding conveyor belt and the feeding area of ​​the turntable, respectively. An inspection mechanism is provided above the inspection station, and a feeding mechanism is provided at the feeding station; The above technical solution utilizes a transversely arranged and rotatable beam to directly connect the feeding conveyor belt and the feeding end of the turntable, breaking through the bottleneck of no-load return in traditional single-end handling mechanisms from the overall structure, and providing a foundation for efficient circulation.

[0007] Furthermore, the flexible adsorption mechanism also includes a toothed ring, a servo motor, and a gear. The toothed ring is fixedly sleeved on the rotating shaft, the servo motor is fixed on the column, and the output shaft of the servo motor is connected to a gear that meshes with the toothed ring. Through the above technical solution, the high-precision meshing transmission of gears and gear rings ensures precise control of the flipping angle of the crossbeam under alternating load at both ends, and the start-stop response is rapid, ensuring accurate positioning of material picking and placing.

[0008] Furthermore, a drive cylinder is provided at the upper ends of both sides of the crossbeam. The piston rod of the drive cylinder extends downward and is connected to a suction cup seat. A flexible silicone layer is provided on the bottom surface of the suction cup seat. Adsorption micropores are opened on the bottom surface of the suction cup seat. Through holes corresponding to the adsorption micropores are opened on the flexible silicone layer. Through the above technical solution, the flexible silicone layer can undergo adaptive elastic deformation when the driving cylinder presses down to contact the component, so that the through holes and microholes are tightly attached to the component surface, which completely solves the problem of poor adsorption and easy material drop of irregularly shaped components, and realizes non-destructive compatible gripping of multiple types of components.

[0009] Furthermore, the turntable conveying mechanism also includes a second rotating shaft, a second gear ring, a second servo motor, and a second gear. The turntable is rotatably mounted on the frame via the second rotating shaft. The second gear ring is fixedly sleeved on the second rotating shaft. The second servo motor is fixed on the frame, and its output shaft is connected to a second gear that meshes with the second gear ring. Through the above technical solution, the servo motor 2, in conjunction with the gear ring drive, can achieve high-precision intermittent stepping drive of the rotating disk, ensuring that the components can be instantly and accurately stopped when they flow to each station, avoiding the generation of minute displacements.

[0010] Furthermore, the upper edge of the rotating disk is embedded with spaced adsorption disks, and fixed suction holes are opened on the adsorption disks. The interior of the rotating shaft is provided with a main air pipe, the upper end of the main air pipe is connected to a distribution air pipe, the other end of the distribution air pipe is connected to the adsorption disk, and the lower end of the main air pipe is connected to a rotary joint. Through the above technical solution, the main air passage inside the rotating shaft is cleverly utilized, and the air path distribution problem between the external static air source and the high-speed rotating disk is solved in conjunction with the rotary joint, so that each adsorption disk can obtain a stable negative pressure during the continuous rotation of the disk.

[0011] Furthermore, the detection mechanism includes a vision support and a detection camera mounted on the vision support. The detection camera includes a main camera positioned vertically downwards and at least one auxiliary camera positioned at an angle. Through the above technical solution, the spatial combination layout of multi-angle cameras can acquire all-round image information of the top and sides of the components at one time, effectively eliminating the visual detection blind spots that are easily generated by a single vertical viewpoint.

[0012] Furthermore, the feeding mechanism includes a support shell, a second drive cylinder, and a toggle block. The support shell is fixed on the frame and located next to the side wall of the rotating disk. The second drive cylinder is mounted on the support shell. The toggle block is connected to the output end of the second drive cylinder, and the extension and retraction direction of the toggle block points towards the adsorption disk at the feeding station. The above technical solution replaces the complex secondary gripping of the robotic arm with the rigid linear motion of the two-push-pushing block driven by the driving cylinder. The motion path is extremely short and the execution is crisp, which greatly shortens the single action cycle of sorting and unloading.

[0013] Furthermore, the feeding mechanism also includes a defective product inclined feeding hopper and a good product inclined feeding hopper located outside the rotating disk. The defective product inclined feeding hopper and the good product inclined feeding hopper are fixed on the frame. The second drive cylinder and the actuating block are respectively provided in two sets corresponding to the defective product inclined feeding hopper and the good product inclined feeding hopper. When the second drive cylinder retracts, the actuating block pushes the component of the feeding station into the corresponding inclined feeding hopper. When the second drive cylinder extends, the actuating block retracts to the middle of the rotating disk. Through the above technical solution, the two sets of actuating components independently control the bidirectional diversion of good and bad products, and together with the inclined hopper, they use gravity to achieve rapid material discharge. At the same time, when the actuating block is not in operation, it actively extends and retracts to the center of the turntable to avoid obstruction, ensuring the absolute safety of the turntable when it rotates at high speed continuously.

[0014] This invention provides an automatic sorting device for electronic components. It has the following advantages: 1. This invention provides an automatic sorting device for electronic components. By setting a crossbeam spanning between the feeding conveyor belt and the turntable conveyor mechanism, and ensuring that its two ends always correspond to the receiving area and the feeding area, the device can alternately pick up and unload materials when it rotates around the column. This achieves seamless synchronous relay of the loading and unloading process and significantly improves the efficiency of component transfer and handling.

[0015] 2. This invention provides an automatic sorting device for electronic components. By setting a flexible silicone layer with adsorption micropores on the bottom surface of the suction cup seat and making it directly contact the components, the device can adapt to the surface of components of different shapes and sizes by its own elastic deformation before negative pressure adsorption. This achieves stable and non-damaging gripping of various types of components and significantly improves the compatibility of the adsorption mechanism with irregularly shaped components and the success rate of gripping.

[0016] 3. This invention provides an automatic sorting device for electronic components. By using a hollow rotating shaft as the main air pipe and cooperating with a rotary joint and a distribution pipe, multiple adsorption plates on the turntable are made to obtain negative pressure. When the turntable is driven by a servo motor to perform intermittent stepping rotation, it can accurately stop at the detection station. This realizes multi-angle high-definition image acquisition of components in a completely static state, which significantly improves the recognition accuracy of the visual inspection system and the accuracy of sorting good and defective products. Attached Figure Description

[0017] Figure 1 This is a three-dimensional top view of the overall structure of the present invention; Figure 2 This is a three-dimensional bottom view of the overall structure of the present invention; Figure 3 These are illustrations of the rotating disc, the inclined hopper for inferior products, and the inclined hopper for good products of the present invention. Figure 4 This is a diagram illustrating the turntable mechanism of the present invention; Figure 5 This is a diagram illustrating the flexible adsorption mechanism of the present invention; Figure 6 This is a diagram illustrating the testing mechanism of the present invention; Figure 7 This is a schematic diagram illustrating the adsorption plate, gas distribution pipe, and main gas pipe of the present invention. Figure 8 This is a diagram illustrating the support shell and upper structure of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Frame; 2. Feeding conveyor belt; 3. Flexible adsorption mechanism; 31. Column; 32. Crossbeam; 33. Rotating shaft one; 34. Gear ring one; 35. Servo motor one; 36. Gear one; 37. Drive cylinder one; 38. Suction cup seat; 39. Adsorption micropores; 310. Flexible silicone layer; 4. Turntable conveyor mechanism; 41. Rotating disk; 42. Rotating shaft two; 43. Gear ring two; 44. Servo motor two; 45. Gear two; 46. Adsorption disk; 47. Fixed suction hole; 48. Main air pipe; 49. Distribution air pipe; 410. Rotary joint; 5. Detection mechanism; 51. Vision bracket; 52. Detection camera; 6. Unloading mechanism; 61. Inferior product inclined unloading hopper; 62. Good product inclined unloading hopper; 63. Support shell; 64. Drive cylinder two; 65. Actuating block. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1:

[0020] like Figure 1-8 As shown, this embodiment of the invention provides an automatic sorting device for electronic components, including a frame 1, which is an integral sheet metal welded base for stable support. A column 31 is fixedly installed at the upper center of the frame 1. A rotating shaft 33 is rotatably connected to the top of the column 31 via a bearing, and a gear ring 34 is fixedly fitted onto the rotating shaft 33. A servo motor 35 is fixed to the side wall of the column 31 via a motor mount. The output shaft of the servo motor 35 extends horizontally and is keyed to a gear 36, which meshes with the gear ring 34. A crossbeam 32 is fixedly inserted through the center of the rotating shaft 33, spanning between the feeding conveyor belt 2 on one side of the frame 1 and the turntable conveyor mechanism 4 on the other side. During initial operation and movement, the two ends of the crossbeam 32 are always directly above the receiving area at the end of the feeding conveyor belt 2 and the feeding area at the edge of the turntable 41, respectively, achieving precise docking of the two workstations.

[0021] Both upper ends of the crossbeam 32 are bolted with drive cylinders 37. The piston rods of the drive cylinders 37 vertically penetrate the through holes of the crossbeam 32 and are fixedly connected to suction cup seats 38. The suction cup seats 38 have a cavity inside, and the bottom surface has an array of adsorption micropores 39. The top is connected to a negative pressure generator through a pipeline. A flexible silicone layer 310 is glued to the bottom surface of the suction cup seats 38. The flexible silicone layer 310 has through holes that correspond one-to-one with the position and size of the adsorption micropores 39 to ensure smooth airflow.

[0022] The rotary conveyor mechanism 4 includes a rotating disk 41 vertically mounted on the frame 1 via a rotating shaft 42. The rotating disk 41 has a disc-shaped structure, with multiple evenly spaced adsorption plates 46 embedded and fixed along the circumferential direction on its upper edge. Each adsorption plate 46 has a fixed suction hole 47 on its upper surface. The rotating shaft 42 has a hollow structure, with a main air pipe 48 inside. The upper end of the main air pipe 48 is connected to the internal cavity of each adsorption plate 46 through a radially extending distribution pipe 49. The lower end of the main air pipe 48 extends out of the frame 1 and is connected to a rotary joint 410, which is connected to an external vacuum pump. A gear ring 43 is fixedly fitted on the lower part of the rotating shaft 42. A servo motor 44 is fixed at the bottom of the frame 1, and the output shaft of the servo motor 44 is connected to a gear 45 that meshes with the gear ring 43. The edge of the rotating disk 41 forms a loading station, an inspection station, and an unloading station in sequence according to the rotation order.

[0023] An inspection mechanism 5 is installed directly above the inspection station. The inspection mechanism 5 includes a vision bracket 51 fixed in a gate shape on the frame 1, and an inspection camera 52 is mounted on the vision bracket 51. The inspection camera 52 includes a main camera that is vertically downward and two auxiliary cameras that are tilted to the left front and right front respectively, forming a blind-spot-free shooting angle for the top surface and sides of the component.

[0024] The feeding mechanism 6 includes a support shell 63 bolted to the frame 1 and located next to the outer edge of the rotating disk 41. Two sets of drive cylinders 64 are arranged parallel to each other on the support shell 63. Each set of drive cylinders 64 has a toggle block 65 fixedly connected to the end of its telescopic rod. The telescopic direction of the toggle block 65 is horizontally pointing towards the outer edge of the suction disk 46 at the feeding station. A defective product inclined feeding hopper 61 and a good product inclined feeding hopper 62 are fixedly installed on the frame 1 and located outside the rotating disk 41. The receiving inlets of the defective product inclined feeding hopper 61 and the good product inclined feeding hopper 62 correspond to the extreme movement trajectories of the two sets of toggle blocks 65 when they retract inward. The bottom ends of the two are respectively connected to the external good product collection box and the defective product collection box.

[0025] Working principle: During use, components are fed to the receiving area by the feeding conveyor belt 2. The drive cylinder 37 at one end of the crossbeam 32 presses down, and the flexible silicone layer 310 adheres to the component. After negative pressure adsorption, the cylinder lifts up. The servo motor 35 drives the crossbeam 32 to rotate 180 degrees, synchronously transferring the component to the top of the feeding station and breaking the vacuum to lower it. At the same time, the adsorption plate 46 sucks in air to fix the component. The servo motor 44 drives the rotating disk 41 to rotate step by step, sending the component to the detection station to stand still. The detection camera 52 takes pictures from multiple angles for judgment. After the judgment is completed, the rotating disk 41 continues to step to the unloading station. According to the judgment result, the corresponding drive cylinder 64 retracts, driving the actuating block 65 to push the component into the good or bad product tilting unloading hopper 62. Then, the drive cylinder 64 extends to make the actuating block 65 retract to avoid the component, and the rotating disk 41 enters the next cycle.

[0026] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0027] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0028] 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 variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

Claims

1. An automatic sorting device for electronic components, comprising a frame (1), characterized in that: The upper middle part of the frame (1) is provided with a flexible adsorption mechanism (3), a feeding conveyor belt (2) is provided on one side, and a turntable conveyor mechanism (4) is provided on the other side. The turntable conveying mechanism (4) includes a turntable (41), and the edge of the turntable (41) is formed by a loading station, an inspection station and a unloading station in sequence. The flexible adsorption mechanism (3) includes a column (31) and a crossbeam (32) rotatably connected to the column (31) via a rotating shaft (33). The crossbeam (32) spans between the feeding conveyor belt (2) and the turntable conveyor mechanism (4). The two ends of the crossbeam (32) are always located above the receiving area of ​​the feeding conveyor belt (2) and the feeding area of ​​the turntable (41), respectively. An inspection mechanism (5) is provided above the inspection station, and a feeding mechanism (6) is provided at the feeding station.

2. The automatic sorting device for electronic components according to claim 1, characterized in that: The flexible adsorption mechanism (3) further includes a gear ring (34), a servo motor (35) and a gear (36). The gear ring (34) is fixedly sleeved on the rotating shaft (33), the servo motor (35) is fixed on the column (31), and the output shaft of the servo motor (35) is connected to the gear (36) that meshes with the gear ring (34).

3. The automatic sorting device for electronic components according to claim 1, characterized in that: Both sides of the crossbeam (32) are provided with a drive cylinder (37). The piston rod of the drive cylinder (37) passes downward and is connected to a suction cup seat (38). The bottom surface of the suction cup seat (38) is provided with a flexible silicone layer (310). The bottom surface of the suction cup seat (38) is provided with adsorption micropores (39). The flexible silicone layer (310) is provided with through holes corresponding to the adsorption micropores (39).

4. The automatic sorting device for electronic components according to claim 1, characterized in that: The turntable conveying mechanism (4) further includes a second rotating shaft (42), a second gear ring (43), a second servo motor (44), and a second gear (45). The turntable (41) is rotatably mounted on the frame (1) via the second rotating shaft (42). The second gear ring (43) is fixedly sleeved on the second rotating shaft (42). The second servo motor (44) is fixed on the frame (1), and its output shaft is connected to the second gear (45) that meshes with the second gear ring (43).

5. The automatic sorting device for electronic components according to claim 4, characterized in that: The upper edge of the rotating disk (41) is embedded with adsorption disks (46) spaced apart. The adsorption disks (46) are provided with fixed suction holes (47). The interior of the rotating shaft (42) is provided with a main air pipe (48). The upper end of the main air pipe (48) is connected to a distribution pipe (49). The other end of the distribution pipe (49) is connected to the adsorption disk (46). The lower end of the main air pipe (48) is connected to a rotary joint (410).

6. The automatic sorting device for electronic components according to claim 1, characterized in that: The detection mechanism (5) includes a vision support (51) and a detection camera (52) mounted on the vision support (51). The detection camera (52) includes a main camera mounted vertically downward and at least one auxiliary camera mounted at an angle.

7. The automatic sorting device for electronic components according to claim 1, characterized in that: The feeding mechanism (6) includes a support shell (63), a second driving cylinder (64), and a toggle block (65). The support shell (63) is fixed on the frame (1) and located next to the side wall of the rotating disk (41). The second driving cylinder (64) is mounted on the support shell (63). The toggle block (65) is connected to the output end of the second driving cylinder (64), and the extension and retraction direction of the toggle block (65) points to the adsorption disk (46) at the feeding station.

8. The automatic sorting device for electronic components according to claim 7, characterized in that: The feeding mechanism (6) also includes a defective product inclined feeding hopper (61) and a good product inclined feeding hopper (62) located outside the rotating disk (41). The defective product inclined feeding hopper (61) and the good product inclined feeding hopper (62) are fixed on the frame (1). The second driving cylinder (64) and the actuating block (65) are respectively provided in two sets corresponding to the defective product inclined feeding hopper (61) and the good product inclined feeding hopper (62). When the second driving cylinder (64) retracts, the actuating block (65) pushes the component of the feeding station into the corresponding inclined feeding hopper. When the second driving cylinder (64) extends, the actuating block (65) retracts to the middle of the rotating disk (41).

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