Cover opening and closing mechanism and sample processing device

Abstract

The utility model discloses a cover opening and closing mechanism and a sample processing device, and belongs to the technical field of sample processing, the cover opening and closing mechanism comprises a cover opening assembly, a shifting assembly and a clamping assembly, the cover opening assembly comprises a cover opening platform and a positioning assembly, the cover opening platform is provided with a placing position and a cover placing position, the placing position is used for bearing a culture dish, and the cover placing position is used for placing the culture dish; the positioning assembly is arranged at the placing position and can clamp the culture dish, and the cover placing position is used for bearing a cover of the culture dish; the shifting assembly comprises a shifting driving part and a driving shaft, the shifting driving part can drive the driving shaft to move within a set range, and the driving shaft can rotate around the first axis of the driving shaft; the clamping assembly is connected with the driving shaft, the clamping assembly comprises a clamping electric cylinder and a plurality of clamping claws, the driving shaft can drive the clamping electric cylinder to rotate, and the clamping claws are arranged on the clamping electric cylinder to clamp or release a culture dish. The sample processing device comprises the cover opening and closing mechanism. And through automatic cover opening and closing, the operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of sample processing technology, and in particular to an opening and closing cover mechanism and a sample processing device. Background Technology

[0002] In the medical and bioengineering fields, many procedures require opening sampling tools, such as petri dishes and sampling boxes. For example, in the tissue culture process for plant gene editing breeding, many operations require manually opening the lids of petri dishes before using a fluorescence detection module to analyze the samples inside. Manually opening lids and boxes is inefficient and limited in speed when processing large numbers of samples, failing to meet the needs of sorting large quantities of samples. Utility Model Content

[0003] The purpose of this invention is to provide an opening and closing mechanism and a sample processing device to solve the technical problems of low efficiency in manual opening and box opening operations in the prior art.

[0004] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0005] An opening and closing mechanism, comprising:

[0006] The opening assembly includes an opening platform and a positioning component. The opening platform has a placement position and a lid placement position. The placement position is used to hold the culture dish. The positioning component is disposed at the placement position and can clamp the culture dish. The lid placement position is used to hold the lid of the culture dish.

[0007] A shifting assembly includes a shifting drive unit and a drive shaft. The shifting drive unit can drive the drive shaft to move within a set range, and the drive shaft can rotate about its own first axis.

[0008] A gripping assembly is connected to the drive shaft. The gripping assembly includes a gripping electric cylinder and a plurality of gripping claws. The drive shaft can drive the gripping electric cylinder to rotate. The plurality of gripping claws are disposed on the gripping electric cylinder to clamp or release the culture dish.

[0009] Preferably, the clamping assembly further includes a compression spring structure, which includes a compression spring, a first connecting seat, and a second connecting seat. The first connecting seat is fixedly connected to the drive shaft, and the second connecting seat is connected to the top end of the clamping electric cylinder. The compression spring is disposed between the first connecting seat and the second connecting seat.

[0010] Preferably, the first connecting seat includes a first limiting block, the second connecting seat includes a second limiting block, the first limiting block is disposed between the two second limiting blocks, and a compression spring is disposed between each second limiting block and the first limiting block.

[0011] Preferably, the first connecting seat further includes a first limiting rod, which is fixedly connected to the first limiting block. The second limiting block has a limiting hole for the first limiting rod to pass through, and the first limiting rod can slide along the limiting hole.

[0012] Preferably, the second connector is provided with a mounting hole, and a bearing is provided in the mounting hole. A portion of the first connector is inserted into the mounting hole and connected to the bearing.

[0013] Preferably, the plurality of gripping claws are spaced apart around the first axis in the gripping electric cylinder, and the gripping electric cylinder can drive the plurality of gripping claws to move closer or further apart to clamp or release the culture dish.

[0014] Preferably, the gripping assembly further includes gripper teeth, with one gripper tooth on the inner side of each gripper, and the gripper tooth includes multiple protrusions that can abut against the culture dish.

[0015] Preferably, the positioning component includes a positioning electric cylinder and multiple positioning claws, the positioning claws being slidably connected to the positioning electric cylinder, and the positioning electric cylinder being able to drive the multiple positioning claws to move closer or further apart to clamp or release the culture dish.

[0016] Preferably, the opening assembly further includes a first sensor, which is disposed on one side of the placement position and is used to detect the height of the culture dish at the placement position.

[0017] A sample processing device includes an opening and closing cover mechanism as described above.

[0018] The beneficial effects of this utility model are:

[0019] The opening and closing mechanism proposed in this utility model allows for automatic opening and closing of the culture dish when it needs to be opened. The culture dish is placed on the opening platform, and the positioning component clamps the bottom of the culture dish. A shifting drive unit moves the drive shaft, causing the gripping component to move so that multiple gripping claws are positioned outside the culture dish, clamping the lid. The drive shaft rotates in reverse around its first axis, causing the gripping claws to rotate the lid, thus opening the dish. The shifting drive unit then moves the gripping component to place the lid in the designated position. When closing the dish, the shifting drive unit moves the gripping component to the lid, where the multiple gripping claws clamp the lid. The dish is then moved to the bottom of the platform, and the drive shaft rotates clockwise around its first axis, tightening the lid onto the platform. Through the cooperation of the opening component, shifting component, and gripping component, automatic opening and closing of the dish is achieved, improving operational efficiency. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the structure of an existing petri dish;

[0021] Figure 2 This is a schematic diagram of the structure of an existing petri dish after the lid is opened;

[0022] Figure 3 This is a schematic diagram of the opening and closing mechanism provided in this embodiment;

[0023] Figure 4 This is a schematic diagram of the opening assembly provided in this embodiment;

[0024] Figure 5 This is a schematic diagram of the structure of the lid-opening component and the petri dish provided in this embodiment.

[0025] Figure 6 This is a schematic diagram of the positioning component provided in this embodiment;

[0026] Figure 7 This is a schematic diagram of the structure of the shifting component and the clamping component provided in this embodiment;

[0027] Figure 8 This is a schematic diagram of the first structure of the clamping component provided in this embodiment;

[0028] Figure 9 This is a schematic diagram of the second structure of the clamping component provided in this embodiment;

[0029] Figure 10 This is a partial structural diagram of the clamping component provided in this embodiment;

[0030] Figure 11 This is a schematic diagram of the structure of the gripper and gripper teeth provided in this embodiment;

[0031] Figure 12 This is a schematic diagram of the detection mechanism provided in this embodiment;

[0032] Figure 13 This is a schematic diagram of the conveying assembly provided in this embodiment.

[0033] In the picture:

[0034] 100. Petri dish; 110. Base box; 120. Basket; 130. Lid; 140. Positioning frame; 141. Positioning hole;

[0035] 10. Lid opening assembly; 11. Lid opening platform; 111. Placement position; 112. Lid placement position; 113. Platform body; 114. Support rod; 12. Positioning assembly; 121. Positioning electric cylinder; 122. Positioning claw; 13. First sensor; 14. Second sensor; 20. Shifting assembly; 21. Shifting drive unit; 22. Drive shaft; 30. Clamping assembly; 31. Clamping electric cylinder; 32. Clamping claw; 33. Compression spring structure; 331. Compression spring; 332. First connecting seat; 3321. First limiting block; 3322. First limiting rod; 333. Second connecting seat; 3331. Second limiting block; 3332. Limiting hole; 334. Bearing; 335. Pressure plate; 34. Cable; 35. Clamping claw tooth block;

[0036] 200. Detection mechanism; 210. Detection platform; 220. Conveying assembly; 221. Conveying guide rail; 222. Conveying slider; 223. Third sensor; 230. Detection box; 231. Door; 232. Door drive; 233. Tilting door; 234. Tilting shaft; 235. Tilting drive; 240. Laser; 250. First camera; 260. First light source. Detailed Implementation

[0037] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0038] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0041] See Figures 1 to 11 This embodiment provides a lid opening and closing mechanism for opening the lid 130 of a petri dish 100. The petri dish 100 includes a base box 110, a positioning frame 140, a basket 120, and a lid 130. A portion of the positioning frame 140 is located inside the base box 110, with its edge extending outside. The positioning frame 140 has a positioning hole 141. The basket 120 is located inside the base box 110 and inserted into the positioning hole 141. The lid 130 is placed over the base box 110 to prevent the basket 120 from being exposed to air. The lid 130 can be connected to the base box 110; rotating the lid 130 allows it to detach from the base box 110 to open the petri dish 100. Alternatively, the lid 130 can be connected to the positioning frame 140 protruding from the base box 110, with the top of the positioning frame 140 inserted into the lid 130. Rotating the lid 130 allows it to detach from the positioning frame 140 to open the petri dish 100. When needed, the positioning frame 140 can be separated from the bottom box 110. When the positioning frame 140 is separated from the bottom box 110, the basket 120 on the positioning frame 140 is also separated from the bottom box 110.

[0042] The opening and closing mechanism includes an opening assembly 10, a shifting assembly 20, and a clamping assembly 30. The opening assembly 10 includes an opening platform 11 and a positioning assembly 12. The opening platform 11 has a placement position 111 and a lid placement position 112. The placement position 111 is used to support the culture dish 100. The positioning assembly 12 is disposed at the placement position 111 and can clamp the culture dish 100. The lid placement position 112 is used to support the lid 130 of the culture dish 100. The shifting assembly 20 includes a shifting drive unit 21 and a drive shaft 22. The shifting drive unit 21 can drive the drive shaft 22 to move within a set range. The drive shaft 22 can rotate around its own first axis. The clamping assembly 30 is connected to the drive shaft 22. The clamping assembly 30 includes a clamping electric cylinder 31 and multiple clamping claws 32. The drive shaft 22 can drive the clamping electric cylinder 31 to rotate. The multiple clamping claws 32 are disposed at the clamping electric cylinder 31 to clamp or release the culture dish 100.

[0043] When it is necessary to open the lid, the culture dish 100 to be opened is placed in the placement position 111 of the opening platform 11, and the positioning component 12 clamps the bottom box 110 of the culture dish 100; the displacement drive unit 21 drives the drive shaft 22 to move, so as to realize the movement of the gripping component 30, so that multiple gripping claws 32 are located outside the culture dish 100, and multiple gripping claws 32 clamp the lid 130 of the culture dish 100. The drive shaft 22 rotates around its own first axis, thereby driving the gripping claws 32 to rotate the lid 130 of the culture dish 100, realizing the opening action. The displacement drive unit 21 drives the gripping component 30 to move, and the lid 130 can be placed in the lid placement position 112; when it is necessary to close the lid, the displacement drive unit 21 drives the gripping component 30 to move to the lid 130, multiple gripping claws 32 clamp the lid 130, and move to the bottom box 110. The drive shaft 22 rotates clockwise around its own first axis, so that the lid 130 is tightened with the bottom box 110. The automatic opening and closing of the lid is achieved by the cooperation of the lid opening component 10, the shifting component 20 and the clamping component 30, thereby improving the operating efficiency.

[0044] The platform 11 includes a platform body 113 and multiple support rods 114. The support rods 114 are located at the bottom of the platform body 113. At least a portion of the top surface of the platform body 113 is recessed to form placement positions 111 and lid placement positions 112. The number of placement positions 111 and lid placement positions 112 can be set according to actual needs. A guide block is provided on one side of the platform body 113 at the placement position 111. The guide block guides the gripper 32 to place the culture dish 100 into the placement position 111.

[0045] The positioning assembly 12 includes a positioning electric cylinder 121 and multiple positioning claws 122. The positioning claws 122 are slidably connected to the positioning electric cylinder 121. The positioning electric cylinder 121 can drive the multiple positioning claws 122 to move closer or further apart to clamp or release the culture dish 100. The positioning electric cylinder 121 can be an existing two-claw electric cylinder. There are two positioning claws 122. The working principle is existing technology and will not be described in detail here.

[0046] The positioning claw 122 clamps the two sides of the bottom box 110 of the culture dish 100. In order to prevent the positioning frame 140 from separating from the bottom box 110 when the lid is opened, a clamping block is provided on the inner side of the positioning claw 122. The clamping block has a stepped surface to fit the bottom box 110 and the positioning frame 140. That is, the clamping block clamps the bottom box 110 and the positioning frame 140 at the same time to prevent the positioning frame 140 and the bottom box 110 of the culture dish 100 from shifting when the lid is opened.

[0047] The opening assembly 10 also includes a first sensor 13, which is disposed on one side of the placement position 111 and is used to detect the height of the culture dish 100 at the placement position 111. After the culture dish 100 is opened, the height of the culture dish 100 decreases. If the first sensor 13 detects that the height of the culture dish 100 is not higher than a first preset value, it indicates that the opening is complete; if the first sensor 13 detects that the height of the culture dish 100 is higher than the first preset value, it indicates that the closing is complete. An alarm will be triggered when the height of the culture dish 100 is abnormal.

[0048] The lid-opening assembly 10 also includes a second sensor 14. Both the placement position 111 and the lid placement position 112 are equipped with the second sensor 14, which is used to detect the presence or absence of the petri dish 100 or the lid 130. For the placement position 111, the second sensor 14 detects the presence or absence of the petri dish 100; for the lid placement position 112, the second sensor 14 detects the presence or absence of the lid 130. The first sensor 13 and the second sensor 14 can be commonly used photoelectric sensors.

[0049] When the gripping assembly 30 places the culture dish 100 into the placement position 111, the second sensor 14 of the placement position 111 detects the presence of the culture dish 100. Then, the positioning cylinder 121 of the positioning assembly 12 drives multiple positioning claws 122 to move and clamp the bottom box 110 of the culture dish 100, simultaneously clamping the positioning frame 140 of the culture dish 100. The drive shaft 22 drives the gripping assembly 30 to rotate to open the lid. If the first sensor 13 detects that the height of the culture dish 100 is not higher than a first set value, it indicates that opening the lid is complete. During the lid-closing process, the drive shaft 22 drives the gripping assembly 30 to rotate to close the lid. If the first sensor 13 detects that the height of the culture dish 100 is higher than the first set value, it indicates that closing the lid is complete; otherwise, an alarm device is triggered. After closing the lid, the positioning cylinder 121 of the positioning assembly 12 drives two positioning claws 122 to move and release the bottom box 110 of the culture dish 100, facilitating subsequent handling and transfer of the culture dish 100.

[0050] The range of movement of the drive shaft 22 driven by the displacement drive unit 21 can be set according to actual needs, as long as it can meet the movement requirements of the culture dish 100. The displacement drive unit 21 can be an existing robot or a three-axis platform in conjunction with a motor. In this embodiment, the displacement drive unit 21 adopts a four-axis robot, which is an existing structure. For example, the four-axis robot includes a robotic arm, and the drive shaft 22 is disposed at one end of the robotic arm. The robotic arm can drive the drive shaft 22 to move within a set range, and the drive shaft 22 can rotate around its own first axis. In other embodiments, the displacement drive unit 21 includes an X-axis guide rail, an X-axis slider, a Y-axis guide rail, a Y-axis slider, a Z-axis guide rail, a Z-axis slider, and a motor. The motor is connected to the drive shaft 22 to drive the drive shaft 22 to rotate. The motor is connected to the X-axis slider, the X-axis slider is slidably connected to the X-axis guide rail, the Y-axis slider is fixedly connected to the X-axis guide rail, the Y-axis slider is slidably connected to the Y-axis guide rail, the Z-axis slider is fixedly connected to the Y-axis guide rail, and the Z-axis slider is slidably connected to the Z-axis guide rail.

[0051] In this embodiment, multiple gripping claws 32 are spaced apart around a first axis on a gripping electric cylinder 31. The gripping electric cylinder 31 can drive the multiple gripping claws 32 to move closer or further apart to clamp or release the culture dish 100. The uniform arrangement of the gripping claws 32 ensures that the culture dish 100 is subjected to uniform force and the clamping is more stable.

[0052] The clamping electric cylinder 31 can be an existing three-jaw electric cylinder, and the clamping jaws 32 are provided with three jaws. Their working principle is existing technology and will not be described in detail here.

[0053] The drive shaft 22 can be directly connected to the clamping electric cylinder 31 or indirectly connected to it. In this embodiment, the clamping assembly 30 also includes a compression spring structure 33, which includes a compression spring 331, a first connecting seat 332, and a second connecting seat 333. The first connecting seat 332 is fixedly connected to the drive shaft 22, and the second connecting seat 333 is connected to the top end of the clamping electric cylinder 31. The compression spring 331 is disposed between the first connecting seat 332 and the second connecting seat 333. When the drive shaft 22 rotates, it drives the first connecting seat 332 to rotate. The first connecting seat 332 compresses the compression spring 331, thereby driving the second connecting seat 333 to rotate, thus enabling the drive shaft 22 to drive the clamping electric cylinder 31 to rotate. When the lid needs to be closed, the drive shaft 22 rotates clockwise around its first axis, causing the lid 130 to be tightened with the base box 110. If the rotation angle of the drive shaft 22 is greater than the first set angle, the first connecting seat 332 and the second connecting seat 333 will move relative to each other, causing the compression spring 331 to be further compressed, while the clamping electric cylinder 31 remains stationary. Therefore, the compression spring structure 33 can play a role in preventing over-tightening when the lid is closed.

[0054] The first connecting seat 332 is connected to the drive shaft 22, and the second connecting seat 333 is connected to the clamping electric cylinder 31. When there is relative movement between the first connecting seat 332 and the second connecting seat 333, the compression spring 331 can be compressed. Specifically, the first connecting seat 332 includes a first limiting block 3321, and the second connecting seat 333 includes a second limiting block 3331. The first limiting block 3321 is disposed between the two second limiting blocks 3331, and a compression spring 331 is disposed between each second limiting block 3331 and the first limiting block 3321. Regardless of whether the first connecting seat 332 rotates clockwise or counterclockwise, the compression spring 331 can be compressed, thereby driving the second connecting seat 333 to rotate together.

[0055] In this embodiment, two first limiting blocks 3321 are provided, and two second limiting blocks 3331 are provided for each first limiting block 3321. This ensures that the first connecting seat 332 and the second connecting seat 333 are subjected to balanced forces.

[0056] The first connecting seat 332 also includes a first limiting rod 3322, which is fixedly connected to a first limiting block 3321. A limiting hole 3332 is provided on the second limiting block 3331 for the first limiting rod 3322 to pass through, allowing the first limiting rod 3322 to slide along the limiting hole 3332. When the first connecting seat 332 rotates relative to the second connecting seat 333, the first limiting rod 3322 slides within the limiting hole 3332. The limiting hole 3332 limits and guides the first limiting rod 3322, ensuring smooth rotation of the first connecting seat 332.

[0057] In this embodiment, the limiting hole 3332 extends in an elongated shape along a direction perpendicular to the first limiting rod 3322. In other embodiments, the diameter of the limiting hole 3332 can be larger than the diameter of the first limiting rod 3322, as long as it can provide sufficient space for the first limiting rod 3322 to move.

[0058] The second connecting seat 333 is provided with a mounting hole, and a bearing 334 is installed in the mounting hole. A portion of the first connecting seat 332 is inserted into the mounting hole and connected to the bearing 334. Specifically, the first connecting seat 332 is interference-fitted with the inner ring of the bearing 334, and the second connecting seat 333 is interference-fitted with the outer ring of the bearing 334. By setting the bearing 334, the connection between the first connecting seat 332 and the second connecting seat 333 is stable. The first connecting seat 332 rotates around the axis of the bearing 334, and the inner ring rotates synchronously with the first connecting seat 332. When the drive shaft 22 rotates, it drives the first connecting seat 332 to rotate relative to the second connecting seat 333. The inner ring rotates synchronously with the first connecting seat 332, causing the compression spring 331 to be compressed by a certain length, pushing the second connecting seat 333 to rotate with the first connecting seat 332, thereby driving the gripper 32 to rotate.

[0059] A pressure plate 335 is provided on the second connecting seat 333. The pressure plate 335 limits the bearing 334 to prevent the bearing 334 from falling off. The cable 34 for clamping the electric cylinder 31 passes through the inner hole of the bearing 334.

[0060] The gripping assembly 30 also includes gripper teeth 35. Each gripper 32 has a gripper tooth 35 on its inner side. The gripper tooth 35 includes multiple protrusions that can abut against the culture dish 100. By providing protrusions, the friction between the gripper tooth 35 and the culture dish 100 is increased, so that the culture dish 100 is clamped and stabilized.

[0061] Furthermore, the outer periphery of the lid 130 of the culture dish 100 is provided with multiple grooves, and the protrusions can be inserted into the grooves. By the cooperation of the protrusions and grooves, the contact area is increased, making the clamping component 30 clamp the culture dish 100 more stably.

[0062] See Figure 12 and Figure 13 This embodiment also provides a sample processing device, including the above-mentioned opening and closing mechanism, and further including a detection mechanism 200, which is used to identify positive sample tissue in the sample in the petri dish 100.

[0063] The testing mechanism 200 includes a testing platform 210, a conveying assembly 220, and a testing chamber 230. The testing platform 210 is connected to the conveying assembly 220, which drives the testing platform 210 in and out of the testing chamber 230. The testing platform 210 is used to hold a petri dish 100. The conveying assembly 220 drives the testing platform 210 into the testing chamber 230. The basket 120 inside the petri dish 100 contains a sample. The sample is tested in the testing chamber 230. After the test is completed, the conveying assembly 220 drives the testing platform 210 out of the testing chamber 230.

[0064] The testing chamber 230 includes a door 231, with an inlet and outlet on one side. The door 231 can open or close the inlet and outlet, and a conveying assembly 220 passes through the inlet and outlet. Before the conveying assembly 220 drives the testing platform 210 into the testing chamber 230, the door 231 is open; after the conveying assembly 220 drives the testing platform 210 into the testing chamber 230, the door 231 is closed. The movement of the door 231 does not interfere with the conveying assembly 220. The testing chamber 230 also includes a door drive 232 for driving the door 231 to move; the door drive 232 can be a cylinder.

[0065] The detection mechanism 200 also includes a laser 240 and a first camera 250, both housed within the detection chamber 230. The laser 240 is used to excite the fluorescence of the analyte in the sample, and the first camera 250 is used to photograph the analyte. The detection mechanism 200 also includes a first light source 260, which provides light for the first camera 250 to take photographs, enabling the first camera 250 to capture images of the analyte in both bright and dark fields. The first camera 250 can be an existing camera, and the first light source 260 can be a lighting lamp.

[0066] The conveying assembly 220 includes a conveying guide rail 221 and a conveying slider 222. The conveying slider 222 is slidably connected to the conveying guide rail 221, and the detection platform 210 is fixedly connected to the conveying slider 222. The detection platform 210 has a detection position for placing the culture dish 100. A positioning rod is provided on the circumferential edge of the detection position for positioning the culture dish 100 so that the culture dish 100 is located directly below the laser 240 after entering the detection chamber 230.

[0067] The conveying assembly 220 also includes a third sensor 223, which is disposed on one side of the conveying guide rail 221 and is used to detect whether there is a culture dish 100 on the detection platform 210. The third sensor 223 can be an existing photoelectric sensor.

[0068] The testing chamber 230 includes a flip door 233, and a ventilation opening is provided on the top of the testing chamber 230. The flip door 233 can open or close the ventilation opening. During whole-machine sterilization, the flip door 233 is opened to allow the interior of the testing chamber 230 to be sterilized; at other times, the flip door 233 is closed.

[0069] The detection box 230 also includes a flip shaft 234 and a flip drive 235. The flip shaft 234 is connected to the flip door 233, and the flip drive 235 can drive the flip shaft 234 to rotate, thereby realizing the rotation of the flip door 233. The flip drive 235 includes a motor and a transmission structure, which can be a gear structure, a linkage structure, or a belt structure.

[0070] After the lid is opened on the opening platform 11, the clamping component 30 clamps the bottom box 110 and moves it to the detection platform 210. The conveying component 220 drives the detection platform 210 into the detection chamber 230. The sample placed in the basket 120 inside the bottom box 110 of the petri dish 100 is detected in the detection chamber 230. After the detection is completed, the conveying component 220 drives the detection platform 210 to move out of the detection chamber 230.

[0071] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A lid opening and closing mechanism characterized by comprising: The application relates to a cover opening device for a culture dish, which comprises a cover opening assembly (10), a shifting assembly (20) and a clamping assembly (30). The cover opening assembly (10) comprises a cover opening platform (11) and a positioning assembly (12), the cover opening platform (11) has a placing position (111) for carrying a culture dish (100) and a cover placing position (112) for carrying a cover (130) of the culture dish (100), and the positioning assembly (12) is arranged on the placing position (111) and can clamp the culture dish (100). The shifting assembly (20) comprises a shifting driving part (21) and a driving shaft (22), the shifting driving part (21) can drive the driving shaft (22) to move in a set range, and the driving shaft (22) can rotate around a first axis. The clamping assembly (30) is connected with the driving shaft (22), and comprises a clamping electric cylinder (31) and a plurality of clamping claws (32), the driving shaft (22) can drive the clamping electric cylinder (31) to rotate, and the plurality of clamping claws (32) are arranged on the clamping electric cylinder (31) to clamp or release the culture dish (100).

2. The lid opening and closing mechanism according to claim 1, characterized by The clamping assembly (30) further comprises a compression spring structure (33), the compression spring structure (33) comprises a compression spring (331), a first connecting seat (332) and a second connecting seat (333), the first connecting seat (332) is fixedly connected with the driving shaft (22), the second connecting seat (333) is connected with the top end of the clamping electric cylinder (31), and the compression spring (331) is arranged between the first connecting seat (332) and the second connecting seat (333).

3. The lid opening and closing mechanism according to claim 2, characterized by The first connecting seat (332) comprises a first limiting block (3321), the second connecting seat (333) comprises a second limiting block (3331), the first limiting block (3321) is arranged between two second limiting blocks (3331), and the compression spring (331) is arranged between each second limiting block (3331) and the first limiting block (3321).

4. The lid opening and closing mechanism according to claim 3, characterized by The first connecting seat (332) further comprises a first limiting rod (3322), the first limiting rod (3322) is fixedly connected with the first limiting block (3321), limiting holes (3332) for penetrating the first limiting rod (3322) are formed in the second limiting blocks (3331), and the first limiting rod (3322) can slide along the limiting holes (3332).

5. The lid opening and closing mechanism according to claim 2, characterized by The second connecting seat (333) is provided with a mounting hole, a bearing (334) is arranged in the mounting hole, part of the first connecting seat (332) is inserted into the mounting hole and connected with the bearing (334).

6. The lid opening and closing mechanism according to claim 1, characterized by The plurality of clamping claws (32) are arranged on the clamping electric cylinder (31) and are spaced apart around the first axis, and the clamping electric cylinder (31) can drive the plurality of clamping claws (32) to move close to or away from each other to clamp or release the culture dish (100).

7. The lid opening and closing mechanism according to claim 1, characterized by The clamping assembly (30) further comprises a clamping jaw tooth block (35), and the inner side of each clamping jaw (32) is provided with the clamping jaw tooth block (35), the clamping jaw tooth block (35) comprises a plurality of protrusions capable of abutting against the culture dish (100).

8. The lid opening and closing mechanism according to claim 1, characterized by The positioning assembly (12) comprises a positioning electric cylinder (121) and a plurality of positioning claws (122), the positioning claws (122) are in sliding connection with the positioning electric cylinder (121), and the positioning electric cylinder (121) can drive the plurality of positioning claws (122) to move close to or away from each other to clamp or release the culture dish (100).

9. The lid opening and closing mechanism according to any one of claims 1 to 8, characterized in that, The cover opening assembly (10) further comprises a first sensor (13), the first sensor (13) is arranged on one side of the placement position (111) and is used for detecting the height of the culture dish (100) at the placement position (111).

10. A sample processing device, characterized by, An opening and closing cover mechanism comprising any one of claims 1-9.

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