Rotary downer

Abstract

The utility model discloses a rotary unloading device, including feeding mechanism and taking material mechanism, and feeding mechanism has the bin for laminating and placing sheet product, and taking material mechanism includes taking material carousel, taking material spare and groove type cam, and taking material carousel can rotate around vertical axis, and taking material spare elevatably installs on taking material carousel, and groove type cam is fixed immovably and is coaxial with taking material carousel, and the outer circumferential surface of groove type cam is equipped with the closed loop cam groove, and taking material spare installs on a sliding part, and the sliding part is equipped with the limiting shaft, and the limiting shaft is embedded in the cam groove, and the profile of cam groove has height change along its circumference, when taking material carousel drives sliding part to rotate to taking material station, and the limiting shaft drives taking material spare to descend and picks up sheet product under the guidance of cam groove and rises and leaves after picking up. The utility model discloses through the cooperation of fixed groove type cam and limiting shaft, and single rotation motion is converted into passive lifting motion, and the structure is simple, and the synchronism is high, and taking material precision and stability improve significantly.

Description

Technical Field

[0001] This utility model relates to the field of automated feeding equipment technology, specifically to a rotary unloading device. Background Technology

[0002] In the automated production or packaging process of sheet products (such as cardboard, plastic sheets, metal sheets, electronic substrates, etc.), it is necessary to remove the stacked sheet products one by one and transport them to the downstream process.

[0003] Currently, existing rotary material handling equipment typically uses two independent power sources to drive the rotating mechanism and the lifting mechanism respectively. For example, the rotating motor is responsible for the circumferential transfer of the material, while the lifting cylinder or lifting motor is responsible for the lifting and lowering of the material at the material handling and unloading stations. This dual-power-source solution has the following problems: First, the rotating and lifting actions need to be coordinated through an electrical control system, which has complex control logic, a long debugging cycle, and the risk of asynchronous actions due to signal delays or program errors; second, two independent drive systems increase the size, weight, and manufacturing cost of the equipment; third, the lifting mechanism usually adopts a direct-push cylinder type, which has a large impact force when descending to the bottom, which can easily damage the product surface or cause unstable adsorption.

[0004] Some existing technologies attempt to use a single power source for both rotation and lifting simultaneously through mechanical linkage. For example, Chinese patent application CN116513864A discloses an automatic feeding device for rotary adsorption of sheet products. This device uses a combination of bevel gear pairs and a crankshaft mechanism to divert the rotational power of the drive component and convert it into the lifting motion of the negative pressure adsorption assembly. While this solution achieves single-power-source drive, its crankshaft mechanism is relatively complex, with numerous parts, resulting in high manufacturing costs and maintenance difficulties. The bevel gear pair has backlash, and wear after long-term operation can lead to a decrease in the accuracy of the lifting motion. Furthermore, the lifting trajectory is determined by the crank-connecting rod mechanism, resulting in a short holding time at the picking station, which is not conducive to sufficient adsorption and stable product pickup.

[0005] In summary, existing rotary material handling equipment suffers from technical problems such as complex structure, poor synchronization, insufficient material handling accuracy and stability, or high manufacturing cost and maintenance difficulty. There is an urgent need for a new rotary material handling solution with a simpler structure and more stable and reliable material handling. Utility Model Content

[0006] The purpose of this invention is to provide a rotary feeding device to solve the technical problems of existing rotary feeding equipment, such as complex structure, poor synchronization, and insufficient feeding accuracy and stability.

[0007] The technical solution adopted by this utility model to solve its technical problem is: A rotary feeding device includes a feeding mechanism, a picking mechanism, and an output mechanism. The feeding mechanism includes a hopper for stacking products. The picking mechanism includes a picking turntable and a slotted cam fixed on a frame. The slotted cam is coaxial with the axis of the picking turntable. At least one set of picking components is provided on the picking turntable along its circumference. The picking turntable is equipped with a first driving component that drives the picking components to rotate around the slotted cam. Picking stations and discharging stations are arranged on the rotation path of the picking components around the slotted cam. The outer circumferential surface of the slotted cam is provided with a closed-loop cam groove. The cam groove is provided with a downward section, a holding section, and an upward section corresponding to the picking station. A sliding component is provided on the picking turntable. The picking component can be raised and lowered on the picking turntable through the sliding component. A limiting shaft embedded in the cam groove is provided on the sliding component.

[0008] When the first driving component drives the material-picking turntable to rotate, the sliding component rotates with the turntable, and the limiting shaft moves along the fixed cam groove. Guided by the lowering section, holding section, and rising section of the cam groove, the material-picking component is driven to perform descent, picking, and rising actions at the picking station. This utility model does not require an additional independent lifting power source for the material-picking component, resulting in a simple and compact structure and low manufacturing cost. The lifting and rotating actions are rigidly linked at the mechanical level, ensuring high motion synchronization and avoiding delays or errors that may occur during electrical control synchronization, significantly improving picking accuracy and operational stability. At the same time, by setting a holding section at the picking station, the material-picking component can maintain its position for a continuous period of time after descending to the picking height, providing sufficient time margin for the material-picking component to establish a stable picking state, effectively improving the picking success rate.

[0009] Preferably, the picking component includes at least one suction nozzle or an openable gripper, which picks up products from the hopper through negative pressure adsorption or clamping. With this structure, the picking component can flexibly select either a suction nozzle or a gripper according to the material and shape characteristics of the product, improving the adaptability and versatility of the equipment; the suction nozzle is suitable for products with flat surfaces and low air permeability, while the gripper is suitable for products with uneven surfaces or where contact with the surface is not permitted.

[0010] Preferably, the cam groove is provided with a downward section and an upward section corresponding to the feeding station, and preferably also includes a holding section for maintaining the height of the picking part. With the above structure, the holding section at the feeding station lowers the picking part to the release height during feeding, thereby shortening the height difference between the picking part and the output mechanism, effectively improving feeding accuracy, reducing product drift or overturning, and providing sufficient operation time for the picking part to release the product.

[0011] Preferably, the feeding mechanism includes a rotatable feeding turntable and a second driving component that drives its rotation. At least one set of hoppers is provided on the feeding turntable along its circumference. Using this structure, multiple hoppers on the feeding turntable enable parallel operation of continuous feeding and material removal. When one hopper is in the material removal position, the remaining hoppers can be manually replenished or replaced, significantly extending the continuous operation cycle after a single replenishment, reducing equipment downtime, and improving overall production efficiency.

[0012] Preferably, the hopper is equipped with a lifting seat for supporting products, which can slide along the height direction of the hopper. With this structure, the lifting seat supports the product queue, allowing the products to rise and fall smoothly along the height direction of the hopper, facilitating the maintenance of a constant height for the top layer of products and ensuring that the retrieval unit can retrieve the products.

[0013] Preferably, each of the aforementioned hoppers is independently equipped with a lifting drive unit, the output end of which is connected to a lifting arm, which passes through the lifting base. Using this structure, by configuring an independent lifting drive unit for each hopper, independent and precise control of the product height within each hopper is achieved. Regardless of the remaining quantity of product in the hopper, the top layer of product always remains at the preset picking height, ensuring consistent contact conditions between the picking component and the product each time it descends, further improving picking consistency. Simultaneously, the lifting arm, passing through the lifting base, indirectly supports the product, avoiding potential damage or contamination that could result from direct contact between the lifting arm and the product.

[0014] Preferably, the bottom of the hopper is slidably mounted on the feeding turntable via a pull-out rail, and the bottom of the hopper is also equipped with a pull-out handle. With the above structure, the operator can quickly pull out the empty hopper radially from the pull-out rail for replacement using the pull-out handle, without the need for tools, making replacement convenient and efficient.

[0015] Preferably, the inner and outer sides of the pull-out track are respectively provided with inner baffles and plungers for elastic limiting. With the above structure, the cooperation between the inner baffles and the plungers realizes the insertion positioning and elastic locking of the hopper, which can not only prevent the hopper from shifting due to centrifugal force or vibration during the rotation of the feeding turntable, but also allow for quick unlocking and extraction when replacement is needed.

[0016] Preferably, the material picking station is equipped with a first sensor on one side of the material bin, and the feeding turntable is equipped with a second sensor on the side from which it rotates out of the material picking station. With this structure, the first sensor detects the product being picked up by the material picking mechanism, controlling the lifting drive to raise the lifting seat. It also detects the remaining product in the material bin, promptly rotating the empty bin out of the material picking station to avoid affecting the normal picking cycle of the material picking mechanism. The second sensor detects whether the empty bin has rotated out of the material picking station and simultaneously controls the corresponding lifting drive to reset the lifting seat.

[0017] Preferably, the output mechanism includes a conveyor belt disposed below the unloading station, with multiple partitions evenly spaced along the conveying direction on the conveyor belt. Using this structure, the conveyor belt is divided into independent receiving sections by the partitions, ensuring that each product is isolated and positioned by the partitions after falling into its corresponding receiving section. This prevents products from sliding or stacking during transport, facilitating accurate retrieval by downstream processes and improving the neatness and positioning accuracy of product transport. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the material handling mechanism in an embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of the material-picking turntable, the material-picking component, and the grooved cam in the embodiment of this utility model; Figure 4 This is an exploded view of the material handling component and the grooved cam in an embodiment of this utility model; Figure 5 This is a schematic diagram of the feeding mechanism in an embodiment of this utility model; Figure 6 This is a cross-sectional view of the feeding turntable, hopper, and lifting drive component in an embodiment of this utility model; Figure 7 This is an enlarged view of the hopper and pull-out track in an embodiment of this utility model.

[0019] In the diagram: 1. Feeding mechanism; 11. Feeding turntable; 12. Hopper; 121. Lifting seat; 122. Pull-out handle; 13. Lifting drive component; 14. Lifting arm; 15. Pull-out rail; 16. Inner baffle; 17. Plunger; 18. Second drive component; 2. Picking mechanism; 21. Picking turntable; 22. Picking component; 23. Groove cam; 24. Cam groove; 241. Holding section; 242. Lowering section; 243. Rising section; 25. Sliding component; 26. Limiting shaft; 27. First drive component; 28. Guide rail; 3. Output mechanism; 31. Conveyor belt; 32. Partition; 4. Product; 5. Frame; 6. First sensor; 7. Second sensor. Detailed Implementation

[0020] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0021] Example: Figures 1 to 7 The rotary unloading device shown is used to remove stacked products 4 one by one and transport them to the downstream process. The rotary unloading device mainly includes three parts: a feeding mechanism 1, a picking mechanism 2, and an output mechanism 3.

[0022] The feeding mechanism 1 includes a hopper 12 for stacking products. The product 4 can be a sheet product such as cardboard, plastic sheet, metal sheet, electronic substrate, glass sheet, or fabric sheet, or a block product with a certain thickness. The products 4 are stacked in the hopper 12 along their thickness direction (vertical direction), forming a queue of sheet products, with the top of the queue being the position to be retrieved. The top of the hopper 12 has an opening for the retrieval component 22 to remove the product 4.

[0023] The material handling mechanism 2 includes a material handling turntable 21 and a slotted cam 23 fixed on the frame 5. The slotted cam 23 is coaxially arranged with the axis of the material handling turntable 21. At least one set of material handling components 22 is provided on the circumference of the material handling turntable 21, shown in the figure as four sets, evenly distributed. The material handling turntable 21 is equipped with a first driving member 27 that drives the material handling components 22 to rotate around the slotted cam 23. The first driving member 27 can be a servo motor, stepper motor, or divider, etc., that can provide precise indexing rotational motion. The rotation path of the material handling components 22 around the slotted cam 23 is arranged with corresponding material handling stations and material discharging stations. When the material handling component 22 rotates with the material handling turntable 21 to the material handling station and descends, it can enter the top opening of the hopper 12 and contact the product 4. When the material handling component 22 rotates with the material handling turntable 21 to the material discharging station, it can release the product 4 onto the output mechanism 3.

[0024] After being fixedly installed on the frame 5 of the equipment, the slotted cam 23 is coaxially arranged with the rotation axis of the material-picking turntable 21 and does not rotate with the material-picking turntable 21. The outer circumferential surface of the slotted cam 23 is provided with a closed-loop cam groove 24, which is a grooved track extending circumferentially along the outer wall of the slotted cam 23. The cam groove 24 is provided with a lowering section 242, a holding section 241, and an ascending section 243 at the corresponding material-picking station. The lowering section 242 is used to drive the material-picking component 22 to descend from a higher position to the holding section 241; the holding section 241 is used to hold the material-picking component 22, so that there is enough time to pick up the material; and the ascending section 243 is used to drive the material-picking component 22 to rise from the holding section 241.

[0025] The material handling turntable 21 is equipped with a sliding member 25, and the material handling member 22 can be raised and lowered on the material handling turntable 21 via the sliding member 25. Specifically, the material handling turntable 21 is equipped with a vertical guide rail 28, and the sliding member 25 can slide up and down along the guide rail 28. It should be noted that the material handling turntable 21 may also be equipped with a guide device such as a groove to allow the sliding member 25 to slide up and down in the vertical direction. The sliding member 25 is equipped with a limiting shaft 26 embedded in the cam groove 24. The end of the limiting shaft 26 may be equipped with a roller or roller bearing, so that it moves in the cam groove 24 in a rolling manner to reduce frictional resistance.

[0026] When the first driving component 27 drives the picking turntable 21 to rotate around the vertical axis, the sliding component 25 moves in a circular motion along with the picking turntable 21. At the same time, since the limiting shaft 26 is embedded in the fixed cam groove 24, under the guidance of the cam groove 24, the limiting shaft 26 drives the sliding component 25 and the picking component 22 to move up and down in the vertical direction at the picking station. Specifically, when the picking turntable 21 drives the sliding component 25 to rotate to the picking station, the limiting shaft 26 enters the lowering section 242, and the picking component 22 begins to descend; then the limiting shaft 26 enters the holding section 241, and the picking component 22 is maintained at a low position for picking; then the limiting shaft 26 enters the rising section 243, and the picking component 22 rises and leaves the hopper 12; the picking component 22 transfers the product to the unloading station.

[0027] By using a fixed slotted cam 23 and its cam groove 24 on its outer circumference, in conjunction with the sliding member 25 and the limiting shaft 26 on the material picker turntable 21, the material picker 22 is made to move downward, hold and rise. Compared with the existing bevel gear pair and crankshaft mechanism scheme, the technical effects of this utility model are reflected in the following three aspects: (1) This utility model adopts the cam-type cooperation of fixed groove cam 23 and limit shaft 26 to replace the bevel gear pair and crankshaft mechanism in the existing technology. The number of parts is greatly reduced, the transmission chain is significantly shortened, the manufacturing and assembly costs are significantly reduced, and there is no need to lubricate the bevel gear and crankshaft, making maintenance simpler; (2) The cam groove 24 and the limit shaft 26 have zero or small gap contact, and there is no inherent tooth side clearance problem of the bevel gear pair. After long-term operation, the gap will not increase due to tooth surface wear, resulting in lag or error in lifting action, and the transmission accuracy is better maintained; (3) Compared with the existing crank connecting rod mechanism, which results in a short holding time at the picking station, this utility model determines the dwell time of the picking part 22 at the picking station by designing the length of the holding section 241 of the cam groove 24, which facilitates the establishment of stable vacuum adsorption or the completion of reliable clamping action, and the picking success rate is higher. In addition, the contour trajectory of the cam groove 24 can be flexibly designed according to process requirements, which can accurately control the lifting height and speed curve of the material pick-up part 22 at various angle positions, and has a large space for motion characteristic optimization.

[0028] The picking component 22 is used to pick up product 4 at the picking station, and its specific form can be flexibly selected according to the product characteristics. When the surface of product 4 is flat and has low air permeability, the picking component 22 can use at least one suction nozzle to pick up product 4 by negative pressure adsorption. The suction nozzle is connected to a negative pressure generating device (such as a vacuum pump or vacuum generator) through a pipeline. When the suction end of the suction nozzle contacts the surface of product 4, the negative pressure generating device works to generate negative pressure inside the suction nozzle, adsorbing and picking up product 4; when the picking component 22 reaches the discharging station, the negative pressure generating device stops or switches to positive pressure, and product 4 is released. When the surface of product 4 is uneven, has air permeability, or is not suitable for contact adsorption, the picking component 22 can use at least one openable gripper to pick up product 4 by clamping. The gripper is driven by an actuator such as a cylinder or electromagnet, closing to clamp the edge of product 4 at the picking station and opening to release the product at the discharging station. The two picking methods can adapt to sheet products of different materials and shapes, improving the versatility of the equipment.

[0029] The cam groove 24 also has a downward section 242, a holding section 241, and a rising section 243 corresponding to the unloading station. Here, the bottom of the holding section 241 remains constant or only slightly fluctuates in height along the axial direction of the grooved cam 23, ensuring that the height of the picking component 22 remains essentially constant when the limiting shaft 26 moves within it, providing a stable operating platform for product release. This configuration utilizes the same set of cam grooves 24 to achieve a dual lifting and holding function. During unloading, the downward movement shortens the height difference between the picking component 22 and the output mechanism 3, effectively reducing product drift, overturning, or impact damage caused by excessive free fall height, significantly improving unloading accuracy and product integrity.

[0030] The holding section 241 located at the material picking station has a predetermined length, ensuring that the relative vertical distance between the picking end of the material picking component 22 and the product 4 remains essentially constant when the limiting shaft 26 moves within it. The specific value of this length can be set according to the material picking process requirements, for example, corresponding to an angle range of 5° to 10° for the material picking turntable 21, to provide a continuous picking time window. The beneficial effects of this continuous picking time window are: by setting the holding section 241 with a predetermined length, the material picking component 22 can remain at the picking height position for a continuous period of time, providing sufficient time margin for the nozzle to establish a stable vacuum or for the gripper to complete the closing action, avoiding picking failures due to insufficient adsorption or inadequate clamping; simultaneously, the longer holding time reduces the precise matching requirements between the rotation speed of the material picking turntable 21 and the response speed of the negative pressure system or gripper actuator, improving the fault tolerance and reliability of the equipment operation. It should be noted that the purpose of configuring the holding section 241 at the feeding station of the cam groove 24 is to shorten the height difference between the picking part 22 and the output mechanism 3 during feeding, thereby improving feeding accuracy and product integrity. In addition, depending on the actual working conditions, it is also possible for the cam groove 24 not to be configured with the lowering section 242, the holding section 241 and the rising section 243 at the feeding station, or the holding section 241 can be removed at the feeding station and the lowering section 242 and the rising section 243 can be directly connected. The specific structure is selected according to the actual needs.

[0031] At the aforementioned material handling and unloading stations, the segments of the cam groove 24 are connected by smooth transition curves to reduce motion impact and wear.

[0032] The first driving component is a servo motor or a divider, configured to drive the material pick-up turntable to perform intermittent indexing rotation in order to meet the material pick-up holding time requirements.

[0033] The feeding mechanism 1 includes a rotatable feeding turntable 11 and a second driving component 18 that drives its rotation. The second driving component 18 can be a servo motor or a divider, etc. The feeding turntable 11 can rotate intermittently or continuously around a vertical axis. At least one set of hoppers 12 is provided on the feeding turntable 11 along its circumference, shown in the figure as four sets, evenly distributed. The number of picking components 22 on the picking turntable 21 is matched with the number of hoppers 12, for example, four sets each, to achieve efficient picking operations with one-to-one correspondence or proportional matching. The rotation of the feeding turntable 11 can sequentially send different hoppers 12 to the picking station. When the product in a hopper 12 is depleted, the feeding turntable 11 rotates to send the next full hopper 12 to the picking station, while the empty hopper 12 is rotated to the manual replenishment station. The operator can perform replenishment operations while the equipment is running, realizing parallel picking and replenishment, and greatly extending the continuous operation time.

[0034] The hopper 12 is equipped with a lifting seat 121 for supporting the products. The lifting seat 121 is a plate-shaped structure made of rigid material, and its shape is adapted to the internal cross-section of the hopper 12, allowing it to slide smoothly along the height direction (vertical direction) of the hopper 12. The products 4 are stacked on the upper surface of the lifting seat 121. Each hopper 12 is independently equipped with a lifting drive unit 13. The lifting drive unit 13 can be a motor screw pair, cylinder, linear motor, or hydraulic cylinder, etc., that can provide linear lifting motion. The output end of the lifting drive unit 13 is connected to a lifting arm 14, which is a strip-shaped or rod-shaped structure and passes through the lifting seat 121. Specifically, the lifting seat 121 is provided with a socket or slot that mates with the lifting arm 14. The lifting arm 14 extends from the opening or slot in the side wall of the hopper 12 and is inserted into the lifting seat 121, forming a linkage connection. After the picking component 22 removes a piece of product 4 from the top of the hopper 12, the lifting drive component 13 drives the lifting arm 14 to rise to the thickness of the piece of product 4. The lifting arm 14 then lifts the lifting base 121 and the entire line of sheet products on it to the same height, keeping the height of the uppermost product 4 in the hopper 12 essentially constant. This ensures that the relative position of the picking component 22 with the product is consistent each time it descends, thereby guaranteeing the stability of the picking conditions and the success rate of picking. The design of the lifting arm 14, which passes through the lifting base 121 to indirectly support the product, avoids surface scratches, indentations, or contamination that may be caused by the lifting arm 14 directly contacting the product 4. This design is especially suitable for precision sheet products with high surface quality requirements.

[0035] After all the product 4 in the hopper 12 has been removed, the hopper 12 moves out of the picking station under the drive of the feeding turntable 11. At this time, the lifting drive component 13 drives the lifting arm 14 to descend in the opposite direction. The lifting arm 14 drives the lifting seat 121 to move downward, so that the lifting seat 121 gradually returns to its initial position at the bottom of the hopper 12 from its high position in the hopper 12. The lifting seat 121 only begins to descend and reset after the hopper 12 has moved out of the picking station. Because it is independently controlled, on the one hand, it can avoid interference between the descent action and the picking component 22 or other components at the picking station, and on the other hand, it does not affect the normal picking rhythm of the picking station, ensuring picking efficiency. After the lifting seat 121 descends to the bottom at the replenishment station, the operator can pull out the empty hopper 12 along the pull-out rail 15 for replenishment. After replenishment, the lifting seat 121 is placed at the bottom of the product and pushed back into the feeding turntable 11 for use.

[0036] A first sensor 6 is installed at the material handling station of the frame 5, specifically on one side of the hopper 12 located at the material handling station. The sensing end of the first sensor 6 corresponds to the position where the material handling component 22 contacts the product 4. The first sensor 6 is used to detect whether the material handling component 22 has picked up the top layer of product 4 in the hopper 12 and whether the hopper 12 is empty. When the material handling component 22 picks up the top layer of product 4 in the hopper 12, the first sensor 6 receives a signal and controls the lifting drive component 13 to move the lifting seat 121 up by the thickness of one product 4. When the first sensor 6 detects that the hopper 12 is empty (i.e., there is no product 4 in the hopper 12), the first sensor 6 controls the second drive component 18 to rotate, turning the empty hopper 12 out of the material handling station and turning the full hopper 12 into the material handling station. The frame 5 is equipped with a second sensor 7 on the side of the hopper 12 that is rotated out of the material picking station. The second sensor 7 is used to detect whether the empty hopper 12 has been rotated out of the material picking station. If the second sensor 7 detects that the empty hopper 12 has been rotated out of the material picking station, the second sensor 7 controls the lifting drive component 13 corresponding to the empty hopper 12 to drive the lifting seat 121 to reset so that the operator can replenish the material.

[0037] The bottom of the hopper 12 is slidably mounted on the feeding turntable 11 via a pull-out rail 15. The pull-out rail 15 is arranged radially along the feeding turntable 11, and its cross-section is inverted "T" or dovetail shaped. A slider or movable base that mates with the pull-out rail 15 is fixedly connected to the bottom of the hopper 12. The bottom of the hopper 12 is also equipped with a pull-out handle 122. By holding the pull-out handle 122, the operator can pull the hopper 12 out radially from the pull-out rail 15 for replacement or replenishment. The inner and outer sides of the pull-out rail 15 are respectively equipped with inner baffles 16 and plungers 17 for elastic limiting. The inner end of the pull-out track 15 (the end closest to the center of the feeding turntable 11) is equipped with an inner baffle 16 to limit the extreme position of the hopper 12 when it slides in. The outer end of the pull-out track 15 (the end furthest from the center of the feeding turntable 11) is equipped with a plunger 17, which is a spring-loaded telescopic pin, and its end protrudes from the pull-out track 15 under normal conditions. When the hopper 12 slides into the pull-out track 15, the slider or movable base at the bottom of the hopper 12 first overcomes the elastic force of the plunger 17 and pushes it in to retract. When the hopper 12 slides into place and abuts against the inner baffle 16, the plunger 17 rebounds and its sidewall abuts against the sidewall of the slider or movable base at the bottom of the hopper 12, forming a lock. When changing the hopper 12, the operator applies a slight external force to pull the pull handle 122 outward to overcome the elastic force of the plunger 17 and unlock and pull it out. This quick-release locking structure makes it easy and quick to replace the hopper 12 without the need for tools. The cooperation between the inner baffle 16 and the plunger 17 not only achieves precise positioning, but also prevents the hopper 12 from radially shifting due to centrifugal force or vibration during the rotation of the feeding turntable 11, thus ensuring the accuracy of the feeding position.

[0038] The output mechanism 3 receives the product 4 transferred from the picking mechanism 2 and transports it to the downstream process. The output mechanism 3 includes a conveyor belt 31 positioned below the unloading station. The conveyor belt 31 is supported by drive rollers and tension rollers and is driven by a motor to circulate. Multiple partitions 32 are evenly spaced along the conveying direction on the conveyor belt 31. The partitions 32 are vertically fixed to the surface of the conveyor belt 31, dividing it into multiple receiving sections for receiving individual products 4. Each receiving section receives a piece of product 4 released by the picking mechanism 22 when the conveyor belt 31 runs directly below the unloading station. The partitions 32 isolate and position the falling product from the products before and after it, preventing the product from sliding, stacking, or colliding due to inertia or vibration during transport. This facilitates precise picking by the downstream process at a predetermined pace, improving the neatness and positioning accuracy of the product transport.

Claims

1. A rotary feeding device, characterized in that, It includes a feeding mechanism (1), a picking mechanism (2), and an output mechanism (3); The feeding mechanism (1) includes a hopper (12) for stacking products (4); The material handling mechanism (2) includes a material handling turntable (21) and a slotted cam (23) fixed on the frame (5); the slotted cam (23) is coaxially arranged with the axis of the material handling turntable (21), and at least one set of material handling parts (22) is provided on the material handling turntable (21) along its circumference. The material handling turntable (21) is equipped with a first driving member (27) that drives the material handling parts (22) to rotate around the slotted cam (23). The rotation path of the material handling parts (22) around the slotted cam (23) is correspondingly arranged with a material handling station and a material discharging station. The outer peripheral surface of the grooved cam (23) is provided with a closed-loop cam groove (24). The cam groove (24) is provided with a downward section (242), a holding section (241) and an upward section (243) respectively corresponding to the material picking station. The material take-up turntable (21) is provided with a sliding member (25), and the material take-up member (22) can be raised and lowered on the material take-up turntable (21) through the sliding member (25). The sliding member (25) is provided with a limiting shaft (26) embedded in the cam groove (24).

2. The rotary feeding device according to claim 1, characterized in that, The picking component (22) includes at least one suction nozzle or openable gripper, which picks up the product (4) from the hopper (12) by negative pressure adsorption or clamping.

3. The rotary feeding device according to claim 1, characterized in that, The cam groove (24) is provided with a downward section (242) and an upward section (243) corresponding to the feeding station, and also includes a holding section (241) for maintaining the height of the feeding part.

4. The rotary feeding device according to claim 1, characterized in that, The feeding mechanism (1) includes a rotatable feeding turntable (11) and a second driving member (18) for driving its rotation. At least one set of the hoppers (12) is provided on the feeding turntable (11) along its circumference.

5. The rotary feeding device according to claim 4, characterized in that, The hopper (12) is provided with a lifting seat (121) for supporting the product (4), and the lifting seat (121) can slide along the height direction of the hopper (12).

6. The rotary feeding device according to claim 5, characterized in that, Each of the hoppers (12) is independently equipped with a lifting drive unit (13), the output end of which is connected to a lifting arm (14), which is inserted into the lifting seat (121).

7. The rotary feeding device according to claim 4, characterized in that, The bottom of the hopper (12) is slidably mounted on the feeding turntable (11) via a pull-out rail (15), and the bottom of the hopper (12) is also provided with a pull-out handle (122).

8. The rotary feeding device according to claim 7, characterized in that, The inner and outer sides of the pull-out rail (15) are respectively provided with inner baffles (16) and plungers (17) for elastic limiting.

9. The rotary feeding device according to claim 6, characterized in that, The material picking station is equipped with a first sensor (6) on one side of the hopper (12), and the material feeding turntable (11) is equipped with a second sensor (7) on the side that rotates out from the material picking station.

10. The rotary feeding device according to claim 1, characterized in that, The output mechanism (3) includes a conveyor belt (31) located below the feeding station, and multiple partitions (32) are provided at equal intervals along the conveying direction on the conveyor belt (31).

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