Component turnover and feeding mechanism

Abstract

The utility model relates to the field of component performance test discloses a component turnover material discharging mechanism, including vertical carousel, central pivot, shaft sleeve seat and drive mechanism, at least two suction assembly of arranging in the circumferential array with the front end surface of carousel is equipped, the vacuum friction disc of close resistance pressure in the back of carousel is equipped with on the shaft sleeve seat, the end face of vacuum friction disc is provided with the material taking air cavity, the air cavity and the material discharging air cavity of transfer air cavity to carousel, the circumferential surface of vacuum friction disc is provided with the air inlet hole of communication with material taking air cavity, transfer air cavity and material discharging air cavity respectively, the back of carousel is provided with the air guide hole of same number with suction assembly and corresponding gas path connection, the air guide hole rotates with the carousel relative vacuum friction disc, switches and material taking air cavity, transfer air cavity and material discharging air cavity butt joint.

Description

Technical Field

[0001] This utility model relates to the field of component performance testing, and in particular to a component flipping and feeding mechanism. Background Technology

[0002] In the manufacturing process of electronic components such as semiconductor devices and photoelectric sensors, performance testing is a crucial step in ensuring product quality before shipment. Its purpose is to screen out defective products that do not meet requirements in terms of electrical performance, structural precision, and other indicators, preventing them from entering downstream assembly stages. Taking transmissive photoelectric sensors as an example, due to their structural characteristics, the industry currently commonly uses gravity-based tracks for performance testing. The performance testing mechanism is integrated into the gravity track. The transmissive photoelectric sensor is rotated 180° within the track, with its pins facing upwards and its bottom groove facing downwards. The groove cooperates with the protrusions on the inner wall of the track to achieve stable sliding, ensuring reliable contact between the component and the test probe during testing. However, because the transmissive photoelectric sensor is rotated upwards within the gravity track, the coplanar dimensions of its pins cannot be effectively acquired and judged through three-dimensional visual inspection on the track.

[0003] Furthermore, the tape packaging of transmissive photoelectric sensors requires components to be inserted into the bag opening of the carrier tape with the groove facing upwards to ensure the accuracy of pick-and-place and pin protection during subsequent automated mounting. However, after testing, the components remain in a reversed position with the groove facing downwards. The lack of a transition mechanism to quickly flip the components and accurately place them means that the testing and tape packaging processes must be performed on two separate machines. This process separation not only significantly extends the production cycle and reduces overall production efficiency, but more importantly, the components are prone to collisions, friction, or contamination during transfer between the two machines, leading to secondary quality problems such as pin deformation and surface damage, severely impacting product yield.

[0004] Therefore, there is an urgent need to design a feeding mechanism that can enable components to quickly and accurately flip to complete posture conversion and directly connect to the tape and packaging machine. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a feeding mechanism that can realize the rapid and accurate flipping of components to complete the posture conversion and directly connect to the tape and packaging machine, so as to meet the needs of large-scale and high-precision production of electronic components.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A component flipping and feeding mechanism includes a vertical turntable, a central rotating shaft disposed behind the turntable and driven by the turntable, a bushing seat fitted on the central rotating shaft and rotatably connected to the central rotating shaft, and a drive mechanism for driving the central rotating shaft and the turntable to rotate in an indexing manner. The front end face of the turntable is provided with at least two suction components arranged in a circumferential array. The bushing seat is fitted with a vacuum friction disk that is tightly pressed against the back of the turntable. The vacuum friction disk has a material intake air chamber, a transfer air chamber and a feeding air chamber on its end face facing the turntable. The circumferential surface of the vacuum friction disk is provided with air inlets that communicate with the material intake air chamber, the transfer air chamber and the feeding air chamber respectively. The back of the turntable has air guide holes that are the same number as the suction components and connected to the corresponding air passages. The air guide holes switch to connect with the material intake air chamber, the transfer air chamber and the feeding air chamber as the turntable rotates relative to the vacuum friction disk.

[0007] As a further improvement to the above technical solution, a guide post facing the turntable is fixed on the bushing seat, a guide hole that cooperates with the guide post is provided on the back of the vacuum friction disk, and an elastic element that applies elastic sealing force to the vacuum friction disk is provided between the shoulder of the bushing seat and the vacuum friction disk.

[0008] As a further improvement to the above technical solution, the suction assembly includes a mounting base fixed on the turntable, a suction tube extending vertically through the mounting base, a suction nozzle fixed at the bottom of the suction tube, and a limiting air supply cap set at the top of the suction tube; a return spring is sleeved on the suction tube between the mounting base and the limiting air supply cap, a limiting clamp is provided at the bottom of the suction tube below the mounting base, and an air inlet is provided at the top of the suction tube and connected to the air passage of the limiting air supply cap.

[0009] As a further improvement to the above technical solution, the limiting clamp is provided with an upwardly extending anti-rotation rod, and the mounting base is provided with an anti-rotation hole that cooperates with the anti-rotation rod.

[0010] As a further improvement to the above technical solution, a buffer pad is provided between the limiting clamp and the mounting base, and a retaining spring is provided at the top of the suction tube to prevent the limiting air supply cap from disengaging from the suction tube.

[0011] As a further improvement to the above technical solution, the driving mechanism is a servo motor connected to the bushing flange, and the output end of the servo motor is connected to the central shaft drive.

[0012] As a further improvement to the above technical solution, a material picking station is formed directly above the turntable, and a material discharging station is formed directly below it. Both the material picking air chamber and the material discharging air chamber are circular holes. The material picking air chamber is located directly above, and the material discharging air chamber is located directly below. The transfer air chamber is located in an arc groove and is located on one side of the material picking air chamber and the material discharging air chamber.

[0013] As a further improvement to the above technical solution, a pressing mechanism is also included to drive the lowermost suction component on the turntable downwards.

[0014] As a further improvement to the above technical solution, the pressing mechanism includes a pressing cylinder, a transmission arm connected to the piston rod end of the pressing cylinder, and a pressing head disposed on the transmission arm.

[0015] As a further improvement to the above technical solution, four suction components are arranged in a circular array on the turntable, and an image detection station is formed on the left or right side of the turntable.

[0016] Beneficial effects: Compared with the prior art, this utility model provides a component flipping and feeding mechanism that directly connects to the gravity test track and the tape packaging machine. Through the rapid indexing rotation of the turntable, the component can be converted from the reverse test posture to the upright packaging posture in one go. This eliminates the manual or mechanical transfer link between two independent machines in the traditional process, greatly shortens the production process, and significantly improves the overall production efficiency.

[0017] During the flipping process, the suction component continuously adsorbs the components through negative pressure, keeping the components' posture stable (without shaking or shifting). While the turntable rotates the components, a 3D vision inspection module can be integrated at the transfer station or a specific inspection station. At this time, the component's pin-up orientation remains unchanged and its position is fixed, enabling precise acquisition of pin coplanarity dimension data. This overcomes the limitation of traditional gravity-based tracks in detecting this indicator, providing support for product quality control. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the component flipping and feeding mechanism provided by this utility model, which connects to the gravity track and the tape packaging machine.

[0019] Figure 2 A schematic diagram of the component flipping and feeding mechanism provided by this utility model.

[0020] Figure 3 A 3D view of the drive mechanism that drives the turntable to rotate.

[0021] Figure 4 A cross-sectional view of the drive mechanism that drives the turntable to rotate.

[0022] Figure 5 This is a schematic diagram of the structure of a vacuum friction disk.

[0023] Figure 6 This is a schematic diagram of the turntable.

[0024] Figure 7 This is a schematic diagram of the material suction assembly.

[0025] Figure 8 This is a schematic diagram of the 3D vision inspection module at the image inspection station inspecting components on the component flipping and feeding mechanism.

[0026] Key component symbols: 1-Turntable, 11-Air vent, 21-Central shaft, 22-Shaft sleeve, 23-Servo motor, 24-Guide post, 25-Guide hole, 26-Elastic element, 3-Suction assembly, 31-Mounting base, 32-Suction tube, 33-Suction nozzle, 34-Limit air supply cap, 35-Return spring, 36-Limit clamp, 37-Anti-rotation rod, 38-Buffer pad, 39-Snap ring, 30-Slide Set, 4-vacuum friction disc, 41-material picking air chamber, 42-transfer air chamber, 43-material discharging air chamber, 44-air inlet, 5-pressing mechanism, 51-pressing cylinder, 52-transmission arm, 53-pressing head, 6-components, 71-connector, 72-air pipe, 91-gravity track, 92-tape and packaging machine, 93-3D vision inspection module, A-material picking station, B-image inspection station, C-material discharging station. Detailed Implementation

[0027] This utility model provides a component flipping and feeding mechanism. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0028] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0029] Please see Figures 1 to 8As shown, this utility model provides a component 6 flipping and feeding mechanism, including a vertical turntable 1, a central rotating shaft 21 disposed behind the turntable 1 and drivenly connected to the turntable 1, a bushing seat 22 sleeved on the central rotating shaft 21 and rotatably connected to the central rotating shaft 21, and a driving mechanism for driving the central rotating shaft 21 and the turntable 1 to rotate in an indexing manner. The front end surface of the turntable 1 is provided with at least two suction components 3 arranged in a circumferential array. The bushing seat 22 is fitted with a vacuum friction device that tightly abuts against the back of the turntable 1. The vacuum friction disk 4 has a material intake air chamber 41, a transfer air chamber 42, and a discharge air chamber 43 on its end face facing the turntable 1. The circumferential surface of the vacuum friction disk 4 is provided with air inlet holes 44 that are respectively connected to the material intake air chamber 41, the transfer air chamber 42, and the discharge air chamber 43. The back of the turntable 1 has the same number of air guide holes 11 as the material suction assembly 3 and corresponding air paths connected to them. As the turntable 1 rotates relative to the vacuum friction disk 4, the air guide holes 11 switch to dock with the material intake air chamber 41, the transfer air chamber 42, and the discharge air chamber 43.

[0030] Taking the use of a transmissive photoelectric sensor for component 6 as an example, during operation, the drive mechanism drives the central rotating shaft 21 and the vertical turntable 1 to rotate in increments. When a certain suction component 3 on the front face of the turntable 1 rotates with the turntable 1 to the picking position A, the air guide hole 11 on the back of the turntable 1 corresponding to the suction component 3 is exactly aligned with the picking air chamber 41 of the vacuum friction disk 4. The picking air chamber 41 is connected to a negative pressure air source through the air inlet 44, so that the suction component 3 generates a stable negative pressure, accurately adsorbing the reverse-position component 6 (with the pins of the transmissive photoelectric sensor facing up and the groove facing down) output by the gravity track 91, thus completing the reliable gripping of component 6.

[0031] The drive mechanism continues to drive the turntable 1 to rotate, and the suction component 3, adsorbing the component 6, moves in a circular motion synchronously with the turntable 1 (because the turntable 1 is vertically arranged, the component 6 flips around the central axis 21 during the rotation). At this time, the air guide hole 11 disengages from the material picking air chamber 41 as the turntable 1 rotates and switches to the intermediate air chamber 42 of the vacuum friction disk 4. The intermediate air chamber 42 continuously provides a stable negative pressure to ensure that the component 6 is always stably adsorbed by the suction component 3 during the flipping process, avoiding posture deviation or falling. The component 6 completes a 180° posture change with the suction component 3, that is, the transmissive photoelectric sensor changes from a reversed posture of "pins facing up and grooves facing down" to an upright posture of "pins facing down and grooves facing up".

[0032] When the turntable 1 rotates the component 6 to the feeding station C (where it connects with the carrier belt of the tape packaging machine 92), the air guide hole 11 switches again and connects with the feeding air chamber 43 of the vacuum friction disc 4. The feeding air chamber 43 cuts off the negative pressure through the air inlet 44 (or connects to a positive pressure air source), the suction force of the suction component 3 disappears, and the component 6 falls precisely into the carrier bag opening of the tape packaging machine 92 in an upright position (groove facing up, pin facing down).

[0033] Since the turntable 1 is equipped with at least two circumferentially arranged suction components 3, when one suction component 3 finishes discharging, the other suction component 3 has synchronously rotated to the picking station A to start picking up the component 6. Through the cyclic indexing rotation of the turntable 1 and the alternating docking of the three air chambers on the vacuum friction disk 4, the continuous operation of picking up, flipping and discharging is realized.

[0034] It is understandable that the vacuum friction disc 4 is mounted on the fixed bushing seat 22, and the three air inlets 44 on its circumference (corresponding to the material pick-up, transfer, and discharge air chambers 43, respectively) are directly connected to the external air source pipes. Since both the bushing seat 22 and the vacuum friction disc 4 are fixed and do not rotate, the external air pipe 72 always remains stationary, without any rotation or displacement, and there is no basis for entanglement.

[0035] The air duct 11 on the back of the turntable 1 is connected to the air passage of the suction assembly 3 through the connector 71 and a section of air pipe 72. The air pipe 72 is an internal connecting component of the turntable 1 and the suction assembly 3. The three are relatively stationary and rotate synchronously without interference from external pipelines. The air pipe 72 only makes a circular motion along a fixed trajectory, without any risk of entanglement, forming a dynamic air passage unit that rotates synchronously but has no internal interference.

[0036] The only external connection point of the dynamic air circuit unit is the air guide hole 11 on the back of the turntable 1. As the turntable 1 rotates, the air guide hole 11 makes a circular motion around the central rotating shaft 21, and successively connects with the material taking air chamber 41, the transfer air chamber 42, and the material discharging air chamber 43 on the fixed vacuum friction disk 4. This means that the dynamic air circuit unit periodically obtains air from the fixed static air circuit through the air guide hole 11, without the need for external pipelines to follow the rotation of the turntable 1, thus avoiding wire tangling at the source.

[0037] Compared with the prior art, this utility model provides a component 6 flipping and feeding mechanism that directly connects to the gravity test track and the tape packaging machine 92. Through the rapid indexing rotation of the turntable 1, the component 6 can be converted from the reverse test posture to the upright packaging posture in one go. This eliminates the manual or mechanical transfer link between two independent machines in the traditional process, greatly shortens the production process, and significantly improves the overall production efficiency.

[0038] During the flipping process, the suction component 3 continuously adsorbs the component 6 through negative pressure, keeping the component 6 in a stable posture (without shaking or shifting). While the turntable 1 is flipping the component 6, a 3D vision inspection module 93 can be integrated at the transfer station or a specific inspection station. At this time, the component 6's pin-up orientation remains unchanged and its position is fixed, enabling precise acquisition of pin coplanarity dimension data. This overcomes the limitation of traditional gravity-type tracks 91 in detecting this indicator, providing support for product quality control.

[0039] Specifically, the bushing seat 22 is fixed with a guide post 24 facing the turntable 1, the back of the vacuum friction disk 4 is provided with a guide hole 25 that cooperates with the guide post 24, and an elastic element 26 that applies elastic sealing force to the vacuum friction disk 4 is provided between the shoulder of the bushing seat 22 and the vacuum friction disk 4.

[0040] During assembly, the non-circular guide post 24 on the bushing seat 22 is precisely inserted into the matching guide hole 25 on the back of the vacuum friction disk 4: on the one hand, the radial fit between the guide post 24 and the guide hole 25 ensures that the vacuum friction disk 4 and the turntable 1 are coaxial (center coincident), so that the material taking air chamber 41, the transfer air chamber 42 and the discharge air chamber 43 are precisely aligned with the air guide hole 11 of the turntable 1 in the circumferential direction; on the other hand, the non-circular fit structure directly restricts the circumferential rotation of the vacuum friction disk 4, avoiding angular displacement due to air pressure, friction of the turntable 1 and other factors, ensuring that the circumferential position of the air chamber and the air guide hole 11 is always fixed, without the need for additional positioning parts.

[0041] The elastic element 26 (such as a compression spring) generates a continuous axial elastic force, which presses the vacuum friction disk 4 tightly against the back of the turntable 1 to form a reliable sealing surface and ensure the air passage is sealed.

[0042] The drive mechanism drives the turntable 1 to rotate, and the circumferential limiting effect of the guide post 24 keeps the vacuum friction disk 4 fixed (without circumferential offset), ensuring that the material picking air chamber 41 and the air guide hole 11 are precisely connected; the axial elastic force of the elastic element 26 maintains the sealing surface fit, the negative pressure is stably transmitted through the air path, and the material suction assembly 3 reliably adsorbs the component 6.

[0043] When the turntable 1 rotates, the guide post 24 continuously restricts the circumferential rotation of the vacuum friction disk 4, preventing the vacuum friction disk 4 from moving due to the friction between the turntable 1 and the vacuum friction disk 4, ensuring that the air guide hole 11 smoothly transitions from the central air chamber 42 and the negative pressure remains stable; the elastic element 26 compensates for machining or assembly deviations and minor vibrations, prevents gaps from appearing on the sealing surface, and ensures that the components 6 are adsorbed without loosening.

[0044] The circumferential limiting and radial positioning of the guide post 24 work together to ensure that the discharge air chamber 43 and the air guide hole 11 are precisely aligned, the elastic element 26 maintains the seal, the negative pressure supply and cut-off are quickly transmitted, and the component 6 is accurately discharged; the vacuum friction disk 4 has no circumferential rotation and no radial offset throughout the process, and the air path switching and station conversion are completely synchronized.

[0045] After long-term operation, even if slight wear occurs on the contact surface between the vacuum friction disk 4 and the turntable 1, the elastic element 26 will automatically release the pre-compression amount, pushing the vacuum friction disk 4 to move towards the turntable 1 to compensate for the wear and maintain the sealing pressure. At the same time, the circumferential limit and radial positioning of the guide post 24 will always keep the position of the vacuum friction disk 4 fixed, ensuring that the air circuit docking accuracy does not decrease with wear.

[0046] Specifically, the driving mechanism is a servo motor 23 connected to the flange of the bushing seat 22, and the output end of the servo motor 23 is connected to the central shaft for transmission. After the equipment is started, the servo motor 23 receives commands from the control system, and its output end drives the central rotating shaft 21 to rotate via a key connection. The central rotating shaft 21 is fixedly connected to the turntable 1, thereby driving the turntable 1, the air pipe 72, and the suction assembly 3 to rotate synchronously. The flange connection of the servo motor 23 ensures that the motor body, the bushing seat 22, and the vacuum friction disk 4 remain relatively stationary, with only the central rotating shaft 21, the turntable 1, and the suction assembly 3 rotating. The servo motor 23 has high control precision, meeting the requirements for precise indexing.

[0047] In this embodiment, a material picking station A is formed directly above the turntable 1, and a material discharging station C is formed directly below it. Both the material picking air chamber 41 and the material discharging air chamber 43 are circular holes. The material picking air chamber 41 is located directly above, and the material discharging air chamber 43 is located directly below. The transfer air chamber 42 is located in an arc groove and is located on one side of the material picking air chamber 41 and the material discharging air chamber 43.

[0048] The gravity-driven track 91 transports the reverse-position component 6 (pins facing up, grooves facing down) to the picking station A directly above. The control system instructs the servo motor 23 to keep the turntable 1 stationary. The picking air chamber 41 is connected to a negative pressure air source through the air inlet 44. The airflow passes sequentially through the static air source, the picking air chamber 41, the air guide hole 11, and the air pipe 72 to the suction assembly 3 to form a stable negative pressure. The suction assembly 3 accurately adsorbs the component 6, completing the picking process. The diameter of the circular picking air chamber 41 matches the air guide hole 11 to ensure precise air path connection and no leakage.

[0049] After material handling is completed, the servo motor 23 drives the turntable 1 to rotate clockwise (or counterclockwise), causing the suction assembly 3 and the adsorbed components 6 to flip downwards synchronously. At this time, the air guide hole 11 moves away from the circular hole-shaped material handling air chamber 41 as the turntable 1 rotates, and enters the arc-shaped transfer air chamber 42 on one side. Since the transfer air chamber 42 is an arc-shaped structure, its circumferential coverage area corresponds exactly to the flipping path from the material handling station A to the material discharging station C. The air guide hole 11 is always in contact with the transfer air chamber 42 during the entire flipping process. The transfer air chamber 42 continuously provides negative pressure to ensure that the components 6 are adsorbed without loosening and without deviation in posture. At the same time, the circumferential anti-rotation of the guide post 24 fixes the vacuum friction disk 4, and the elastic element 26 compensates for the small vibrations during rotation, maintaining the sealing surface contact.

[0050] It should be emphasized that, since the transition area between the circular orifice-shaped material intake air chamber 41 and the arc-shaped transfer air chamber 42 is smaller than the area of ​​the air guide hole 11, and the transition area between the circular orifice-shaped material discharge air chamber 43 and the arc-shaped transfer air chamber 42 is smaller than the area of ​​the air guide hole 11, even if the turntable 1 rotates to the transition area, the air guide hole 11 will be connected to the material intake air chamber 41 and / or the transfer air chamber 42, and there will be no negative pressure interruption, ensuring that the suction nozzle 33 assembly continuously sucks up the component 6.

[0051] After the turntable 1 rotates 180°, the suction component 3 reaches the discharge station C directly below (precisely docking with the bag opening of the carrier bag of the tape packaging machine 92), and the servo motor 23 receives the position feedback signal and stops precisely. At this time, the air guide hole 11 disengages from the arc-shaped transfer air chamber 42 and precisely aligns with the circular discharge air chamber 43 directly below the vacuum friction disk 4. The discharge air chamber 43 cuts off the negative pressure (or connects to positive pressure), the suction force disappears, and the component 6 falls vertically into the bag opening of the carrier bag in an upright position (groove facing up, pins facing down), completing the discharge.

[0052] After the material is discharged, the servo motor 23 continues to drive the turntable 1 to rotate. The suction component 3 is reset with the turntable 1 (either via the other side of the transfer air chamber 42 or directly, depending on the number of suction components 3). At the same time, the next suction component 3 rotates to the material picking station A directly above and begins to pick up the component 6, realizing a continuous automated cycle of picking up, 180° flipping, and discharging.

[0053] Since the tape packaging machine 92 is located below the turntable 1, in order to ensure that the component 6 is smoothly embedded into the bag opening of the carrier tape, a pressing mechanism 5 is also included to drive the suction assembly 3 at the bottom of the turntable 1 to descend. The suction assembly 3 includes a mounting base 31 fixed on the turntable 1, a suction tube 32 extending vertically through the mounting base 31, a suction nozzle 33 fixed at the bottom end of the suction tube 32, and a limiting air supply cap 34 set at the top of the suction tube 32. A return spring 35 is sleeved on the suction tube 32 between the mounting base 31 and the limiting air supply cap 34. A limiting clamp 36 is provided at the bottom of the suction tube 32 below the mounting base 31. An air inlet is provided at the top of the suction tube 32 and is connected to the air passage of the limiting air supply cap 34.

[0054] Servo motor 23 drives turntable 1 to rotate, and a certain suction component 3 precisely stops at the material picking station A directly above. The air inlet at the top of its suction tube 32 is sealed and connected to the air guide hole 11 of turntable 1 through the limiting air supply cap 34. The air guide hole 11 is synchronously aligned with the circular material picking air chamber 41 of vacuum friction disk 4. The material picking air chamber 41 is connected to a negative pressure air source, and the suction nozzle 33 of the suction component 3 located at material picking station A generates negative pressure. At this time, the reset spring 35 is in a naturally extended state, and the suction tube 32 maintains its initial height under the elastic force of the reset spring 35. The suction nozzle 33 is in contact with the reverse posture component 6 (pins facing up, grooves facing down) output by the gravity track 91, and the component 6 is precisely adsorbed by the negative pressure.

[0055] Servo motor 23 drives turntable 1 to rotate clockwise, and suction assembly 3 simultaneously flips the adsorbed component 6. Air guide hole 11 disengages from the material picking air chamber 41 and enters the arc-shaped transfer air chamber 42. Transfer air chamber 42 continuously provides negative pressure to ensure stable suction force of suction nozzle 33; at the same time, the preload of return spring 35 keeps suction tube 32 at a fixed stroke (limiting clamp 36 is in contact with the lower end face of mounting base 31 for limiting), preventing suction tube 32 from moving vertically under the action of centrifugal force of flipping, and the posture of component 6 always remains stable.

[0056] When the suction assembly 3 rotates to the lower feeding station C (aligned with the carrier belt), the servo motor 23 stops precisely, and the air guide hole 11 aligns with the circular feeding air chamber 43. At this time, the pressing mechanism 5 is activated, specifically driving the lowermost suction assembly 3: the execution end of the pressing mechanism 5 presses against the top of the limiting air supply cap 34, overcoming the elastic force of the return spring 35, and pushes the suction tube 32 to extend vertically downward along the mounting base 31. The suction nozzle 33, along with the components 6, descends synchronously until the suction nozzle 33 approaches the opening of the carrier bag.

[0057] When the negative pressure in the discharge chamber 43 is cut off (or positive pressure is connected), the suction force of the nozzle 33 disappears, and the component 6 falls precisely into the carrier bag opening from a very short distance in an upright position (groove facing up, pin facing down), avoiding posture deviation or pin collision caused by excessive falling height.

[0058] After the material is discharged, the pressing mechanism 5 retracts, the return spring 35 releases its elastic force, pushing the suction tube 32 upward to reset, and the limiting clamp 36 re-fits and limits the lower end face of the mounting base 31, restoring the suction assembly 3 to its initial height. At the same time, the servo motor 23 drives the turntable 1 to continue rotating, and the suction assembly 3 leaves the discharge station C. The next suction assembly 3 arrives at the picking station A simultaneously, entering the next cycle.

[0059] Furthermore, the limiting clamp 36 is provided with an upwardly extending anti-rotation rod 37, and the mounting base 31 is provided with an anti-rotation hole that cooperates with the anti-rotation rod 37. The anti-rotation rod 37 and the anti-rotation hole restrict the circumferential rotation of the suction tube 32, so that when picking up materials, the circumferential posture of the suction nozzle 33 is fixed, accurately adhering to the adsorption surface of the component 6, avoiding adsorption offset caused by the deflection of the suction nozzle 33; when flipping, the component 6 does not twist, and the pin orientation is always fixed, and the three-dimensional vision inspection module 93 of the transfer station can accurately collect the pin coplanarity data; when unloading materials, the suction tube 32 descends in a straight line without deflection, reducing the positional error of the component 6 falling into the carrier tape, and fully meeting the posture and position requirements of precision tape packaging.

[0060] During the material feeding process of the suction assembly 3, the limiting clamp 36 and the mounting base 31 will come into contact and collide. Therefore, a buffer pad 38 is provided between the limiting clamp 36 and the mounting base 31. The buffer pad 38 (such as silicone or polyurethane material) can absorb the impact force of the collision, avoid the vibration caused by rigid contact from being transmitted to the suction tube 32 and the suction nozzle 33, reduce the rigid wear of the mounting base 31 and the limiting clamp 36, and avoid the deformation of the components caused by long-term collision.

[0061] In addition, the top end of the straw 32 is provided with a retaining spring 39 to prevent the limiting air supply cap 34 from detaching from the straw 32. The retaining spring 39 is embedded in the top end of the straw 32, axially restricting the displacement of the limiting air supply cap 34, completely eliminating the risk of the limiting air supply cap 34 loosening or falling off under conditions of high-speed rotation of the turntable 1, repeated action of the pressing mechanism 5, or long-term vibration. This ensures that the limiting air supply cap 34 and the air passage interface at the top end of the straw 32 always maintain a tight fit, avoiding air leakage, ensuring the pressure stability of negative pressure adsorption and positive pressure dispensing, and preventing the component 6 from adsorbing and falling off or causing poor dispensing.

[0062] Preferably, the pressing mechanism 5 includes a pressing cylinder 51, a transmission arm 52 connected to the piston rod end of the pressing cylinder 51, and a pressing head 53 disposed on the transmission arm 52. During operation, the piston rod of the pressing cylinder 51 extends, and the pressing head 53, driven by the transmission arm 52, presses vertically against the top of the limiting air supply cap 34 of the suction assembly 3 (a wear-resistant pad can be provided on the contact surface between the pressing head 53 and the air supply cap to avoid wear). At this time, the downward pressure of the pressure head 53 overcomes the elastic force of the return spring 35, pushing the suction tube 32 to slide vertically downward along the mounting base 31 until the suction nozzle 33 carrying the component 6 descends to the preset height; after the suction nozzle 33 reaches the specified height, the discharge air chamber 43 cuts off the negative pressure, and the component 6 falls vertically into the carrier bag opening under the action of gravity and weak positive pressure; at the same time, the control system commands the piston rod of the pressure cylinder 51 to retract, the transmission arm 52 drives the pressure head 53 to reset upward, the return spring 35 releases its elastic force, pushing the suction tube 32 and the limiting air supply cap 34 back to the initial position, and the limiting clamp 36 fits and limits the lower end face of the mounting base 31, waiting for the next cycle.

[0063] In order to reduce the sliding friction between the straw 32 and the mounting base 31, the mounting base 31 is provided with a sliding sleeve 30 that is fitted onto the straw 32.

[0064] In a preferred embodiment, four suction components 3 are arranged in a circular array on the turntable 1, and an image detection station B is formed on the left or right side of the turntable 1.

[0065] This can be understood as follows: four material suction components 3 are evenly distributed in a circular array on the vertical turntable 1, corresponding to four core workstations (in clockwise / counterclockwise order): (1) material picking workstation A directly above; (2) image detection workstation B on the left / right side; (3) material dispensing workstation C directly below; (4) empty stroke reset workstation (the angle between adjacent workstations is 90°). The servo motor 23 drives the turntable 1 to rotate in 90° increments to ensure that each material suction component 3 accurately stops at the corresponding workstation.

[0066] For example, when the first suction component 3 rotates to the upper material picking station A, the air guide hole 11 connects with the round hole-shaped material picking air chamber 41 of the vacuum friction disk 4, and the negative pressure is transmitted to the suction nozzle 33 through the air path, adsorbing the reverse posture component 6 (pins facing up and grooves facing down) output by the gravity track 91; the elastic telescopic structure of the suction component 3 adapts to the height deviation of the component 6, and the anti-rotation rod 37 restricts the circumferential rotation of the suction tube 32 to ensure the stability of the adsorption posture.

[0067] Servo motor 23 drives turntable 1 to rotate 90°. The first suction component 3 carries component 6 and flips to the left / right image detection station B. The air guide hole 11 enters the arc-shaped transfer air chamber 42 with turntable 1 (continuously providing negative pressure, and the suction force is not interrupted). At this time, the second suction component 3 rotates synchronously to the picking station A and begins to pick up new components 6 (parallel picking, no time wasted).

[0068] The 3D vision inspection module 93 of the image inspection station B is started. Because the component 6 is always attracted by negative pressure (fixed posture, pins facing upwards) and the anti-rotation structure restricts circumferential deflection, the inspection module accurately collects data such as pin coplanarity and surface defects, and feeds the inspection results back to the control system in real time.

[0069] Turntable 1 continues to rotate 90°, and the first suction component 3 reaches the material discharge station C directly below, with the air guide hole 11 connecting with the material discharge air chamber 43; the second suction component 3 rotates to the detection station to start detection, and the third suction component 3 rotates to the material removal station A to start material removal.

[0070] The control system determines the product's quality based on the detection results: If the product is good, the pressing cylinder 51 of the pressing mechanism 5 drives the transmission arm 52 and the pressing head 53 to press against the limit air supply cap 34 of the first suction component 3, pushing the suction tube 32 down to above the carrier bag opening. The discharge air chamber 43 cuts off the negative pressure (or connects to positive pressure), and the component 6 falls precisely into the carrier belt. If the product is defective, the control system instructs the servo motor 23 to fine-tune the rotation angle (or triggers the sorting mechanism at the next station) to send the defective product to the waste collection trough without affecting the normal discharge process. The turntable 1 then rotates 90°, and the first suction component 3 returns to its initial state after the empty stroke reset station (the reset spring 35 pushes the suction tube 32 to reset, and the pressing head 53 retracts). At the same time, the second suction component 3 reaches the discharge station C, the third suction component 3 reaches the detection station, and the fourth suction component 3 reaches the picking station A, forming a four-station cycle of picking, detection, discharge, and reset, realizing continuous automated operation.

[0071] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of the appended claims of this utility model.

Claims

1. A component flipping and feeding mechanism, characterized in that, The device includes a vertical turntable, a central rotating shaft located behind the turntable and driven by the turntable, a bushing seat fitted on the central rotating shaft and rotatably connected to the central rotating shaft, and a drive mechanism for driving the central rotating shaft and the turntable to rotate in an indexing manner. The front end face of the turntable is provided with at least two suction components arranged in a circumferential array. The bushing seat is fitted with a vacuum friction disk that is tightly pressed against the back of the turntable. The vacuum friction disk has a material intake air chamber, a transfer air chamber, and a discharge air chamber on its end face facing the turntable. The circumferential surface of the vacuum friction disk is provided with air inlets that communicate with the material intake air chamber, the transfer air chamber, and the discharge air chamber, respectively. The back of the turntable has air guide holes with the same number as the suction components and corresponding air paths connected to them. The air guide holes switch to connect with the material intake air chamber, the transfer air chamber, and the discharge air chamber as the turntable rotates relative to the vacuum friction disk.

2. The component flipping and feeding mechanism according to claim 1, characterized in that, The bushing seat is fixed with a guide post facing the turntable, the back of the vacuum friction disk is provided with a guide hole that cooperates with the guide post, and an elastic element is provided between the shoulder of the bushing seat and the vacuum friction disk to apply elastic sealing force to the vacuum friction disk.

3. The component flipping and feeding mechanism according to claim 1, characterized in that, The suction assembly includes a mounting base fixed on a turntable, a suction tube extending vertically through the mounting base, a suction nozzle fixed at the bottom of the suction tube, and a limiting air supply cap located at the top of the suction tube; a return spring is fitted on the suction tube between the mounting base and the limiting air supply cap, a limiting clamp is provided at the bottom of the suction tube below the mounting base, and an air inlet is provided at the top of the suction tube and connected to the air passage of the limiting air supply cap.

4. The component flipping and feeding mechanism according to claim 3, characterized in that, The limiting clamp is provided with an upwardly extending anti-rotation rod, and the mounting base is provided with an anti-rotation hole that cooperates with the anti-rotation rod.

5. The component flipping and feeding mechanism according to claim 3, characterized in that, A buffer pad is provided between the limiting clamp and the mounting base, and a retaining spring is provided at the top of the suction tube to prevent the limiting air supply cap from disengaging from the suction tube.

6. The component flipping and feeding mechanism according to claim 1, characterized in that, The drive mechanism is a servo motor connected to the flange of the bushing seat, and the output end of the servo motor is connected to the central shaft drive.

7. The component flipping and feeding mechanism according to any one of claims 1-6, characterized in that, The material picking station is formed directly above the turntable, and the material discharging station is formed directly below it. Both the material picking air chamber and the material discharging air chamber are circular holes. The material picking air chamber is located directly above, and the material discharging air chamber is located directly below. The transfer air chamber is located in an arc groove and is located on one side of the material picking air chamber and the material discharging air chamber.

8. The component flipping and feeding mechanism according to claim 7, characterized in that, It also includes a pressing mechanism for driving the bottommost suction assembly on the turntable down.

9. The component flipping and feeding mechanism according to claim 8, characterized in that, The pressing mechanism includes a pressing cylinder, a transmission arm connected to the piston rod end of the pressing cylinder, and a pressing head disposed on the transmission arm.

10. The component flipping and feeding mechanism according to claim 7, characterized in that, The turntable has four suction components arranged in a circular array, and an image detection station is formed on the left or right side of the turntable.

Images