A petri dish dispensing device

Abstract

The utility model discloses a culture dish blanking device relates to culture dish technical field, including frame, carousel and push material mechanism. Frame is equipped with blanking station and material taking station, be equipped with a plurality of containing cavities on the carousel, a plurality of containing cavities are with the axis of carousel as center circle distribution, and containing cavity is used for accommodating stacked culture dish, and the carousel rotation is connected on the frame, to make a plurality of containing cavities can turn to blanking station place in turn, push material mechanism is located on the frame, and push material mechanism sets up corresponding blanking station, and push material mechanism is used for pushing the culture dish of the lowest in containing cavity at blanking station to material taking station. In the process that staff replenishes empty containing cavity, push material mechanism still can push the culture dish of the stacking in containing cavity at blanking station, need not suspend entire blanking and subsequent automation process, guarantee that the blanking and subsequent automation process carry on continuously, and then be favorable to improve the blanking efficiency of culture dish.

Description

Technical Field

[0001] This utility model relates to the field of petri dish technology, and in particular to a petri dish feeding device. Background Technology

[0002] In biological experiments, microbial culture, and medical testing, petri dishes are core instruments for holding culture media and culturing samples. A petri dish unloading device is used to sequentially and stably transport stacked petri dishes to a designated picking station, providing precise coordination for subsequent automated operations such as robotic gripping and transfer. In existing technologies, petri dish unloading devices typically include a receiving cavity and a pushing mechanism. The receiving cavity is used to store multiple stacked petri dishes; the pushing mechanism pushes the bottom petri dish in the receiving cavity to a preset picking station. A robotic arm, working in conjunction with the unloading device, then picks up the petri dish at the picking station and transfers it to the subsequent operation area, completing one unloading cycle. The pushing mechanism then repeats this action, sequentially pushing the stacked petri dishes in the receiving cavity to the picking station until all petri dishes in the receiving cavity have been removed. Once all petri dishes in the receiving cavity have been removed, the entire unloading and subsequent automated process must be paused until a new petri dish is added to the receiving cavity, after which the device is restarted to continue the unloading operation. This method of stopping the machine to replenish materials will interrupt the feeding process and reduce the feeding efficiency of the petri dishes. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a petri dish feeding device, which is beneficial to improving the feeding efficiency of petri dishes.

[0004] A petri dish feeding device according to an embodiment of the present invention includes a frame with a feeding station and a receiving station; a turntable with multiple receiving cavities distributed circumferentially around the axis of the turntable, the receiving cavities being used to receive stacked petri dishes, the turntable being rotatably connected to the frame so that the multiple receiving cavities can be sequentially rotated to the feeding station; and a pushing mechanism disposed on the frame, the pushing mechanism being disposed corresponding to the feeding station, the pushing mechanism being used to push the lowest petri dish in the receiving cavity at the feeding station to the receiving station.

[0005] It has at least the following beneficial effects: Workers first load the culture dishes to be unloaded into multiple circumferentially distributed cavities on a turntable, arranged in a stacked manner. After all cavities are filled, the turntable begins to rotate. When one of the cavities filled with culture dishes reaches the unloading station, the turntable stops. Then, the pushing mechanism starts, pushing the bottom culture dish from the unloading cavity to the picking station on the frame. This allows the robotic arm to grab and transfer the culture dish from the picking station to the subsequent operation area. At this point, the remaining stacked culture dishes in the cavity, no longer supported by the bottom dish, naturally descend along the cavity under their own gravity until a new bottom culture dish reaches the corresponding pushing height of the pushing mechanism, preparing for the next push. If there are still stacked culture dishes in the unloading cavity, the pushing mechanism will repeat the pushing action until all culture dishes in the unloading cavity have been pushed to the picking station. After all the culture dishes in the receiving cavity at the unloading station have been unloaded, the turntable rotates again, moving the next receiving cavity filled with culture dishes to the unloading station. The pushing mechanism then pushes the culture dishes one by one into the new receiving cavity following the same process. Simultaneously, workers can replenish the empty receiving cavities that have already been unloaded. While workers are replenishing the empty receiving cavities, the pushing mechanism can still push the culture dishes stacked in the receiving cavity at the unloading station without interrupting the entire unloading and subsequent automated process. This allows the pushing mechanism to continuously and stably push the culture dishes to the picking station, preventing the robotic arm from becoming idle due to material shortages and ensuring the continuous operation of the unloading and subsequent automated process, thereby improving the unloading efficiency of the culture dishes.

[0006] The petri dish feeding device according to an embodiment of the present invention further includes a plurality of positioning members. The turntable is provided with a plurality of dropping holes, and the plurality of dropping holes are respectively arranged corresponding to a plurality of receiving cavities. The plurality of positioning members are all arranged on the turntable, and the plurality of positioning members are respectively arranged corresponding to a plurality of dropping holes, so that the petri dish at the bottom of the receiving cavity can pass through the dropping hole and fall on the positioning member. The pushing mechanism is used to push the petri dish on the positioning member at the feeding station to the picking station.

[0007] According to the petri dish feeding device of this utility model embodiment, the positioning member is provided with a first positioning groove, the first positioning groove is connected to the discharge hole, the first positioning groove is used to accommodate the petri dish, and the inner side wall of the first positioning groove is provided with a discharge port. When the positioning member is located at the feeding station, the opening of the discharge port faces the picking station, the discharge port is used for the petri dish to pass through, and the pushing mechanism can push the petri dish in the first positioning groove so that the petri dish passes through the discharge port and moves to the picking station.

[0008] According to an embodiment of the present invention, the petri dish feeding device includes a pushing mechanism comprising a linear drive assembly, a torsion spring, and a pushing block. A pushing hole is provided on the inner bottom wall of the first positioning groove, extending along the moving direction of the petri dish. An avoidance hole is provided on the inner side wall of the first positioning groove on the side away from the feeding station, communicating with the pushing hole. The linear drive assembly is mounted on the frame. One end of the pushing block is hinged to the output end of the linear drive assembly. The torsion spring is provided between the pushing block and the output end of the linear drive assembly, and the torsion spring is used to force the other end of the pushing block... The linear drive assembly drives the pusher to reciprocate between the picking station and the clearance hole. The linear drive assembly drives the pusher closer to the clearance hole so that the pusher passes through the pushing hole and the other end of the pusher keeps abutting against the lower surface of the culture dish in the first positioning groove. When the pusher moves to the clearance hole, the other end of the pusher swings upward into the clearance hole. The linear drive assembly drives the pusher closer to the picking station so that the pusher pushes the culture dish in the first positioning groove to the picking station.

[0009] According to the petri dish feeding device of this utility model embodiment, the other end of the push block is provided with a guide slope, which can abut against the lower surface of the petri dish in the first positioning groove.

[0010] According to the petri dish feeding device of this utility model embodiment, the pushing mechanism further includes a mounting arm, one end of which is connected to the linear drive assembly, and the other end of which is provided with a receiving hole. One end of the pusher is hinged to the inner wall of the receiving hole, and the pusher can be stored in the receiving hole.

[0011] According to the petri dish feeding device of this utility model embodiment, the linear drive assembly includes a motor, a lead screw, and a nut block. The motor is mounted on the frame, the nut block is slidably connected to the frame, the nut block is connected to one end of the mounting arm, one end of the lead screw is rotatably connected to the frame, the other end of the lead screw is connected to the output end of the motor, and the nut block is threadedly connected to the lead screw.

[0012] The petri dish feeding device according to an embodiment of the present utility model further includes a support platform, which is disposed on the frame. A second positioning groove is provided on the support platform. The inner bottom wall of the second positioning groove is flush with the inner bottom wall of the first positioning groove. The material picking station is disposed at the second positioning groove. The second positioning groove is used to accommodate petri dishes. The material pushing mechanism is used to push the petri dishes in the first positioning groove into the second positioning groove.

[0013] According to the petri dish feeding device of this utility model embodiment, the turntable is provided with multiple limiting components, each limiting component including multiple limiting rods, the lower ends of the multiple limiting rods being connected to the turntable, and the multiple limiting rods forming the receiving cavity.

[0014] The petri dish feeding device according to an embodiment of the present invention further includes a rotating shaft, the lower end of which is rotatably connected to the frame, the rotating shaft is connected to the turntable, and the axis of the rotating shaft coincides with the axis of the turntable.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of the petri dish feeding device according to an embodiment of this utility model; Figure 2 This is a structural diagram of the turntable, limit assembly, and positioning component; Figure 3 This is a structural diagram of the positioning component, the support platform, the pushing mechanism, and the culture dish; Figure 4 This is a structural diagram of the positioning component, the support platform, and the pushing mechanism; Figure 5 This is a schematic diagram of the material pushing mechanism; Icon labels: Turntable 100; material discharge hole 110; rotating shaft 120; positioning component 130; first positioning groove 131; material outlet 132; material push hole 133; clearance hole 134; support platform 140; second positioning groove 141; material picking station 150; Pushing mechanism 200; linear drive assembly 210; motor 211; lead screw 212; nut block 213; torsion spring 220; push block 230; guide slope 231; mounting arm 240; storage hole 241; Limiting component 300; limiting rod 310; receiving cavity 320; 10 petri dishes. Detailed Implementation

[0017] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They 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 be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0019] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0020] refer to Figure 1 and Figure 2 This utility model discloses a petri dish feeding device, including a frame, a turntable 100, and a pushing mechanism 200. The frame is provided with a feeding station and a picking station 150; the turntable 100 is provided with multiple receiving cavities 320, which are circumferentially distributed around the axis of the turntable 100. The receiving cavities 320 are used to receive stacked petri dishes 10. The turntable 100 is rotatably connected to the frame so that the multiple receiving cavities 320 can be rotated sequentially to the feeding station; the pushing mechanism 200 is provided on the frame and is set corresponding to the feeding station. The pushing mechanism 200 is used to push the lowest petri dish 10 in the receiving cavity 320 at the feeding station to the picking station 150.

[0021] Understandably, the workers first load the culture dishes 10 to be unloaded into multiple accommodating cavities 320 distributed circumferentially around the axis of the turntable 100, arranged in a stacked manner. After all accommodating cavities 320 are filled, the turntable 100 begins to rotate. When one of the accommodating cavities 320 filled with culture dishes 10 reaches the unloading station, the turntable 100 stops. Then, the pushing mechanism 200 is activated, pushing the bottommost culture dish 10 in the accommodating cavity 320 at the unloading station to the picking station 150 on the frame. This allows the robotic arm to grab and transfer the culture dish 10 at the picking station 150 to the subsequent operation area. At this time, the remaining stacked culture dishes 10 in the accommodating cavity 320, having lost the support of the bottommost culture dish 10, naturally descend along the accommodating cavity 320 under their own gravity until the new bottommost culture dish 10 reaches the pushing height corresponding to the pushing mechanism 200, preparing for the next pushing operation. If there are still stacked culture dishes 10 in the receiving cavity 320 at the unloading station, the pushing mechanism 200 will perform the pushing action again until all culture dishes 10 in the receiving cavity 320 at the unloading station have been pushed to the picking station 150. After all culture dishes 10 in the receiving cavity 320 at the unloading station have been unloaded, the turntable 100 rotates again, turning the next receiving cavity 320 filled with culture dishes 10 to the unloading station. The pushing mechanism 200 performs the pushing action of culture dishes 10 one by one in the new receiving cavity 320 according to the same process as above. At the same time, the staff can replenish the stacked culture dishes 10 in the empty receiving cavity 320 that has been unloaded. While the staff is replenishing the empty receiving cavity 320, the pushing mechanism 200 can still push the culture dishes 10 stacked in the receiving cavity 320 at the unloading station without pausing the entire unloading and subsequent automated process. This allows the pushing mechanism 200 to continuously and stably push the culture dishes 10 to the picking station 150, preventing the robot arm from becoming idle due to material shortage and ensuring the continuous operation of the unloading and subsequent automated process, thereby improving the unloading efficiency of the culture dishes 10.

[0022] refer to Figure 1 and Figure 2 The petri dish feeding device also includes a rotating shaft 120, the lower end of which is rotatably connected to the frame. The rotating shaft 120 is connected to the turntable 100, and the axis of the rotating shaft 120 coincides with the axis of the turntable 100. The petri dish feeding device also includes a rotary motor, which is mounted on the frame. The output end of the rotary motor is connected to the lower end of the rotating shaft 120, enabling the rotary motor to drive the rotating shaft 120 to rotate, thereby rotating the turntable 100 and causing the multiple receiving cavities 320 on the turntable 100 to sequentially rotate to the feeding station. In one embodiment of this invention, the output end of the rotary motor can be connected to the lower end of the rotating shaft 120 via a pulley and belt.

[0023] refer to Figure 1and Figure 2 The turntable 100 is provided with multiple limiting components 300, each including multiple limiting rods 310. The lower ends of the multiple limiting rods 310 are all connected to the turntable 100, and the multiple limiting rods 310 surround a receiving cavity 320. It can be understood that the turntable 100 is provided with multiple limiting components 300, each limiting component 300 is composed of multiple limiting rods 310, and the lower ends of all limiting rods 310 are fixedly connected to the turntable 100. The multiple limiting rods 310 in each limiting component 300 respectively surround to form a receiving cavity 320 for accommodating stacked culture dishes 10. The multiple limiting rods 310 not only stabilize and limit the stacked culture dishes 10, preventing them from shifting or tipping over during the rotation of the turntable 100 or during feeding, but also allow operators to more clearly observe the remaining amount of culture dishes 10 in the receiving cavity 320. Furthermore, the multiple limiting rods 310 guide the insertion and descent of the culture dishes 10, ensuring a smooth descent. It should be explained that when operators replenish the empty receiving cavity 320 on the turntable 10, they first tilt the culture dish 10, pass it through the gaps between the limiting rods 310, and place it into the receiving cavity 320. Then, they straighten the culture dishes 10, stacking them to complete the replenishment.

[0024] refer to Figures 1 to 3 The petri dish feeding device also includes multiple positioning elements 130. The turntable 100 has multiple discharge holes 110, each corresponding to a different receiving cavity 320. The diameter of each discharge hole 110 is larger than the outer diameter of the petri dish 10. The positioning elements 130 are all located on the turntable 100 and correspond to the discharge holes 110, allowing the lowest petri dish 10 in each receiving cavity 320 to pass through the discharge hole 110 and land on the positioning element 130. The pushing mechanism 200 pushes the petri dishes 10 from the positioning elements 130 at the feeding station to the picking station 150. Understandably, the operator first places the stacked petri dishes 10 into the multiple receiving cavities 320 on the turntable 10. During the feeding process, the lowest petri dish 10 in each receiving cavity 320 will pass through the corresponding discharge hole 110 under its own gravity and land on the positioning element 130 corresponding to the discharge hole 110. The positioning element 130 provides support and positioning for the bottommost culture dish 10, preventing the culture dish 10 from shifting due to shaking and ensuring that the pushing mechanism 200 can accurately push the culture dish 10 on the positioning element 130 to the picking station 150. In this embodiment of the present invention, multiple receiving cavities 320 are disposed on the upper surface of the turntable 100, and multiple positioning elements 130 are disposed on the lower surface of the turntable 100.

[0025] refer to Figure 3and Figure 4 The positioning component 130 is provided with a first positioning groove 131, which communicates with the discharge hole 110. The first positioning groove 131 is used to accommodate the culture dish 10. The inner side wall of the first positioning groove 131 is provided with a discharge port 132. When the positioning component 130 is located at the unloading station, the opening of the discharge port 132 faces the picking station 150. The discharge port 132 is used for the culture dish 10 to pass through. The pushing mechanism 200 can push the culture dish 10 in the first positioning groove 131 so that the culture dish 10 passes through the discharge port 132 and moves to the picking station 150. It can be understood that the operator first puts the stacked culture dishes 10 into the multiple receiving cavities 320 on the turntable 100. During the feeding process, the culture dish 10 at the bottom of each receiving cavity 320 passes through the corresponding discharge hole 110 under its own gravity and falls into the first positioning groove 131 on the positioning component 130 corresponding to the discharge hole 110. The contour of the first positioning groove 131 is adapted to the shape of the culture dish 10, so that the inner wall of the first positioning groove 131 plays a circumferential positioning role for the culture dish 10, ensuring the stability of the position of the culture dish 10. After the pusher mechanism 200 is started, the pusher mechanism 200 pushes the culture dish 10 in the first positioning groove 131 through the discharge port 132 and moves it to the picking station 150, so that the robot arm can pick up the culture dish 10 at the picking station 150 and transfer it to the subsequent operation area.

[0026] refer to Figures 3 to 5 The feeding mechanism 200 includes a linear drive assembly 210, a torsion spring 220, and a pusher block 230. A feeding hole 133 is provided on the inner bottom wall of the first positioning groove 131, extending along the moving direction of the culture dish 10. An avoidance hole 134 is provided on the inner side wall of the first positioning groove 131 away from the material handling station 150, communicating with the feeding hole 133. The linear drive assembly 210 is mounted on a frame. One end of the pusher block 230 is hinged to the output end of the linear drive assembly 210. A torsion spring 220 is provided between the pusher block 230 and the output end of the linear drive assembly 210, forcing the other end of the pusher block 230 to swing upwards. The linear drive assembly 210 is used to drive the pusher block 230 to reciprocate between the picking station 150 and the clearance hole 134. The linear drive assembly 210 can drive the pusher block 230 to approach the clearance hole 134 so that the pusher block 230 passes through the push hole 133 and the other end of the pusher block 230 is kept against the lower surface of the culture dish 10 in the first positioning groove 131. When the pusher block 230 moves to the clearance hole 134, the other end of the pusher block 230 swings upward into the clearance hole 134. The linear drive assembly 210 can drive the pusher block 230 to approach the picking station 150 so that the pusher block 230 pushes the culture dish 10 in the first positioning groove 131 to the picking station 150.

[0027] Understandably, when the corresponding receiving cavity 320 and positioning element 130 are located at the unloading station, the linear drive assembly 210 starts operating. The linear drive assembly 210 drives the push block 230, which is hinged to its output end, to move towards the clearance hole 134. The other end of the push block 230 maintains an upward swinging tendency under the elastic force of the torsion spring 220. During the movement of the push block 230, the push block 230 extends into the feeding hole 133, and the other end of the push block 230 abuts against the culture dish 10 in the first positioning groove 131. As the push block 230 continues to move towards the clearance hole 134, the other end of the push block 230 begins to swing downward, the torsion spring 220 is compressed, and the other end of the push block 230 remains abutted against the lower surface of the culture dish 10. When the pusher block 230 moves to the clearance hole 134, it disengages from the petri dish 10. At this time, the torsion spring 220 extends and forces the other end of the pusher block 230 to swing upwards, causing it to move to the side of the petri dish 10 in the first positioning groove 131 away from the picking station 150. Then, the linear drive assembly 210 drives the pusher block 230 towards the picking station 150, causing the other end of the pusher block 230 to abut against the side of the petri dish 10 away from the picking station 150, and moves it within the push hole 133, thereby pushing the petri dish 10 to the picking station 150. In this embodiment, when the corresponding positioning member 130 and the receiving cavity 320 rotate to the unloading station, the extending direction of the push hole 133 on the positioning member 130 is parallel to the driving direction of the linear drive assembly 210. (Reference) Figure 5 The other end of the push block 230 is provided with a guide slope 231, which can abut against the lower surface of the culture dish 10 in the first positioning groove 131. It can be understood that when the push block 230 extends into the push hole 133, the other end of the push block 230 abuts against the culture dish 10 through the guide slope 231. The guide slope 231 guides the push block 230, allowing the push block 230 to swing downward more smoothly under the limiting effect of the culture dish 10, so as to reduce the impact force when the push block 230 abuts against the culture dish 10.

[0028] refer to Figures 3 to 5The feeding mechanism 200 also includes a mounting arm 240. One end of the mounting arm 240 is connected to the linear drive assembly 210, and the other end of the mounting arm 240 is provided with a receiving hole 241. One end of the push block 230 is hinged to the inner wall of the receiving hole 241, and the push block 230 can be stored in the receiving hole 241. It can be understood that during the process of the linear drive assembly 210 driving the mounting arm 240 to move toward the clearance hole 134, the push block 230 first enters the feeding hole 133 and abuts against the culture dish 10 in the first positioning groove 131. As the mounting arm 240 continues to move toward the clearance hole 134, the other end of the push block 230 swings downward and extends into the receiving hole 241 on the mounting arm 240. In this embodiment of the utility model, one end of the push block 230 is hinged to the inner wall of the receiving hole 241 via a hinge shaft, and the torsion spring 220 is sleeved on the hinge shaft. The two elastic arms of the torsion spring 220 are respectively connected to the push block 230 and the mounting arm 240.

[0029] refer to Figure 4 and Figure 5 The linear drive assembly 210 includes a motor 211, a lead screw 212, and a nut block 213. The motor 211 is mounted on the frame, the nut block 213 is slidably connected to the frame, and one end of the nut block 213 is connected to the mounting arm 240. One end of the lead screw 212 is rotatably connected to the frame, and the other end of the lead screw 212 is connected to the output end of the motor 211. The nut block 213 is threadedly connected to the lead screw 212. It is understood that when the output end of the motor 211 drives the lead screw 212 to rotate, the nut block 213, threadedly connected to the lead screw 212, will drive the mounting arm 240 to move linearly towards the clearance hole 134 or the material handling station 150. In another embodiment of this utility model, the linear drive assembly 210 includes a cylinder. The cylinder body is connected to the frame, and the piston rod of the cylinder is connected to the mounting arm 240. In this embodiment of the utility model, a slide rail is provided on the frame, parallel to the front-rear direction. A slider is provided on the nut block 213, and the slider is slidably connected to the slide rail. When the positioning component 130 rotates to the unloading station, the extension direction of the push hole 133 on the positioning component 130 is parallel to the front-back direction, and the line connecting the material picking station 150 and the clearance hole 134 on the positioning component 130 is parallel to the front-back direction.

[0030] refer to Figure 3 and Figure 4The petri dish feeding device also includes a support platform 140, which is mounted on a frame. The support platform 140 has a second positioning groove 141, the inner bottom wall of which is flush with the inner bottom wall of the first positioning groove 131. A material handling station 150 is located at the second positioning groove 141, which is used to accommodate the petri dish 10. A pushing mechanism 200 is used to push the petri dish 10 from the first positioning groove 131 into the second positioning groove 141. It is understood that the inner bottom wall of the second positioning groove 141 on the support platform 140 is flush with the inner bottom wall of the first positioning groove 131 on the positioning member 130, preventing the petri dish 10 from bumping or getting stuck due to height difference during the pushing process, and ensuring that the pushing mechanism 200 can smoothly push the petri dish 10 from the first positioning groove 131 to the second positioning groove 141. On the other hand, the second positioning groove 141 can form a secondary limit on the culture dish 10 entering the material picking station 150, preventing the culture dish 10 from shifting position due to pushing, and ensuring that the subsequent robot can accurately grab the culture dish 10 at the material picking station 150 in the second positioning groove 141.

[0031] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0032] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A petri dish feeding device, characterized in that, include: The frame is equipped with a feeding station and a picking station (150). The turntable (100) is provided with multiple receiving cavities (320), which are circumferentially distributed around the axis of the turntable (100). The receiving cavities (320) are used to receive stacked culture dishes (10). The turntable (100) is rotatably connected to the frame so that the multiple receiving cavities (320) can be rotated sequentially to the unloading station. A pushing mechanism (200) is provided on the frame. The pushing mechanism (200) is set in relation to the unloading station. The pushing mechanism (200) is used to push the lowest culture dish (10) in the receiving cavity (320) at the unloading station to the picking station (150).

2. The petri dish feeding device according to claim 1, characterized in that: It also includes multiple positioning elements (130), and the turntable (100) is provided with multiple material dropping holes (110). The multiple material dropping holes (110) are respectively arranged corresponding to multiple receiving cavities (320). The multiple positioning elements (130) are all arranged on the turntable (100). The multiple positioning elements (130) are respectively arranged corresponding to multiple material dropping holes (110) so that the lowest petri dish (10) in the receiving cavity (320) can pass through the material dropping hole (110) and fall on the positioning element (130). The pushing mechanism (200) is used to push the petri dish (10) on the positioning element (130) at the material feeding station to the material picking station (150).

3. The petri dish feeding device according to claim 2, characterized in that: The positioning component (130) is provided with a first positioning groove (131), which is connected to the discharge hole (110). The first positioning groove (131) is used to accommodate the petri dish (10). The inner side wall of the first positioning groove (131) is provided with a discharge port (132). When the positioning component (130) is located at the discharge station, the opening of the discharge port (132) faces the picking station (150). The discharge port (132) is used for the petri dish (10) to pass through. The pushing mechanism (200) can push the petri dish (10) in the first positioning groove (131) so that the petri dish (10) passes through the discharge port (132) and moves to the picking station (150).

4. The petri dish feeding device according to claim 3, characterized in that: The feeding mechanism (200) includes a linear drive assembly (210), a torsion spring (220), and a pusher block (230). A feeding hole (133) is provided on the inner bottom wall of the first positioning groove (131), extending along the moving direction of the culture dish (10). An obstacle hole (134) is provided on the inner side wall of the first positioning groove (131) away from the feeding station (150), communicating with the feeding hole (133). The linear drive assembly (210) is mounted on the frame. One end of the pusher block (230) is hinged to the output end of the linear drive assembly (210). The torsion spring (220) is provided between the pusher block (230) and the output end of the linear drive assembly (210), forcing the other end of the pusher block (230) to swing upwards. The linear drive assembly (210) 210) is used to drive the push block (230) to reciprocate between the picking station (150) and the clearance hole (134). The linear drive assembly (210) can drive the push block (230) to approach the clearance hole (134) so ​​that the push block (230) passes through the push hole (133) and the other end of the push block (230) is kept against the lower surface of the petri dish (10) in the first positioning groove (131). When the push block (230) moves to the clearance hole (134), the other end of the push block (230) swings upward into the clearance hole (134). The linear drive assembly (210) can drive the push block (230) to approach the picking station (150) so that the push block (230) pushes the petri dish (10) in the first positioning groove (131) to the picking station (150).

5. The petri dish feeding device according to claim 4, characterized in that: The other end of the push block (230) is provided with a guide slope (231), which can abut against the lower surface of the culture dish (10) in the first positioning groove (131).

6. The petri dish feeding device according to claim 4, characterized in that: The pushing mechanism (200) also includes a mounting arm (240), one end of which is connected to the linear drive assembly (210), and the other end of which is provided with a receiving hole (241). One end of the push block (230) is hinged to the inner wall of the receiving hole (241), and the push block (230) can be stored in the receiving hole (241).

7. The petri dish feeding device according to claim 6, characterized in that: The linear drive assembly (210) includes a motor (211), a lead screw (212), and a nut block (213). The motor (211) is mounted on the frame. The nut block (213) is slidably connected to the frame and connected to one end of the mounting arm (240). One end of the lead screw (212) is rotatably connected to the frame, and the other end of the lead screw (212) is connected to the output end of the motor (211). The nut block (213) is threadedly connected to the lead screw (212).

8. The petri dish feeding device according to claim 3, characterized in that: It also includes a support platform (140), which is mounted on the frame. The support platform (140) is provided with a second positioning groove (141). The inner bottom wall of the second positioning groove (141) is flush with the inner bottom wall of the first positioning groove (131). The material picking station (150) is located at the second positioning groove (141). The second positioning groove (141) is used to accommodate the culture dish (10). The pushing mechanism (200) is used to push the culture dish (10) in the first positioning groove (131) into the second positioning groove (141).

9. The petri dish feeding device according to claim 1, characterized in that: The turntable (100) is provided with multiple limiting components (300), each limiting component (300) including multiple limiting rods (310), the lower ends of the multiple limiting rods (310) are all connected to the turntable (100), and the multiple limiting rods (310) form the receiving cavity (320).

10. The petri dish feeding device according to claim 1, characterized in that: It also includes a rotating shaft (120), the lower end of which is rotatably connected to the frame. The rotating shaft (120) is connected to the turntable (100), and the axis of the rotating shaft (120) coincides with the axis of the turntable (100).

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