A sample delivery mechanism capable of delivering multiple samples simultaneously

Abstract

The present invention discloses a sample transfer mechanism capable of transferring multiple samples at the same time, and relates to the technical field of sample transfer. The present invention comprises a support box; transfer windows are provided on opposite side walls of the support box; a switch door assembly is installed at the transfer window; an air inlet is provided on the top wall of the support box, and an air inlet assembly corresponding to the air inlet is installed on the top wall of the support box; an air outlet is provided on the bottom wall of the support box, and an air outlet assembly corresponding to the air outlet is installed on the bottom wall of the support box; a rotating drive assembly is vertically installed inside the support box; a carrying plate is horizontally installed on the rotating drive assembly; a plurality of supporting parts corresponding to the transfer windows are evenly distributed on the circumferential side wall of the carrying plate; a movable plate is slidably connected to the upper surface of the supporting part; a clamping assembly is installed on the movable plate; a push-pull assembly is installed above the carrying plate. The present invention not only has a reasonable structural design and is convenient to use, but also effectively improves the transfer efficiency of samples.

Description

Technical Field

[0001] The present invention belongs to the technical field of sample transfer, and in particular relates to a sample transfer mechanism capable of transferring multiple samples simultaneously. Background Art

[0002] As an auxiliary equipment of clean room, transfer window is mainly used for transferring items between clean area and clean area, and between non-clean area and clean area, so as to reduce the number of times the clean room door is opened and minimize the pollution to the clean area.

[0003] The existing transfer window is developing towards automation, that is, the box door opens and closes automatically, and the cryobox is automatically picked up and placed by a robot. However, the cryobox may be offset during the transfer process, which causes the robot to be unable to accurately grasp the cryobox, increasing the uncertainty of the cryobox transfer; and the existing transfer window can only transfer one sample at a time, and the window door must be opened and closed according to the process each time the sample is transferred to prevent gas exchange on both sides of the transfer window, which increases the wear of the window door when transferring multiple different samples or large batches of the same samples, resulting in poor sealing of the window body, causing condensation and frosting problems of the equipment, and low transfer efficiency, wasting the operator's time. Therefore, it is urgent to study a sample transfer mechanism that can transfer multiple samples at the same time to solve the above problems. Summary of the invention

[0004] The present invention provides a sample transfer mechanism capable of transferring multiple samples simultaneously, and its purpose is to solve the technical problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a sample transfer mechanism capable of transferring multiple samples at the same time, comprising a support box, an air inlet assembly, an air outlet assembly and a switch door assembly; transfer windows are provided on opposite side walls of the support box; a switch door assembly is installed at the transfer window; a plurality of air inlet holes are provided on the top wall of the support box, and an air inlet assembly corresponding to the air inlet holes is installed on the top wall of the support box; a plurality of air outlet holes are provided on the bottom wall of the support box, and an air outlet assembly corresponding to the air outlet holes is installed on the bottom wall of the support box; a rotation drive assembly is vertically installed inside the support box; a carrying plate is horizontally installed on the rotation drive assembly; a plurality of support parts corresponding to the transfer windows are evenly distributed on the circumferential side walls of the carrying plate; a movable plate for carrying a sample box is slidably connected to the upper surface of the support part; a clamping assembly for positioning the sample box is installed on the movable plate; a push-pull assembly is installed above the carrying plate; the push-pull assembly is used to push the movable plate from the support part to the transfer window or to pull the movable plate from the transfer window to the support part.

[0007] As a preferred technical solution of the present invention, the rotary drive assembly includes a servo motor vertically fixed on the bottom surface of the support box; the output shaft of the servo motor is coaxially fixed on the lower surface of the carrier plate.

[0008] As a preferred technical solution of the present invention, a partition is horizontally arranged between the servo motor and the carrier plate; the partition is fixed in the support box; a plurality of first ventilation holes are evenly distributed on the upper surface of the partition; the output shaft of the servo motor is inserted into the partition, and the output shaft of the servo motor is gap-matched with the partition.

[0009] As a preferred technical solution of the present invention, a first turntable is horizontally attached to the upper surface of the partition; a plurality of second ventilation holes corresponding to the first ventilation holes are evenly distributed on the upper surface of the first turntable; and the output shaft of the servo motor is fixedly inserted into the first turntable.

[0010] As a preferred technical solution of the present invention, the inner top surface of the support box is rotatably connected to a horizontally arranged second turntable; a plurality of third ventilation holes corresponding to the first ventilation holes are evenly distributed on the lower surface of the second turntable.

[0011] As a preferred technical solution of the present invention, a sliding groove is provided on the upper surface of the support part along the radial direction of the carrying plate; the sliding groove passes through one end of the support part away from the carrying plate; the two opposite side surfaces of the sliding groove are provided with directional grooves along the length direction; the lower surface of the movable plate is provided with a guide protrusion corresponding to the sliding groove; the guide protrusion is slidably fitted in the sliding groove; the two opposite side surfaces of the guide protrusion are provided with convex strips corresponding to the directional groove; the convex strips are slidably fitted in the directional groove.

[0012] As a preferred technical solution of the present invention, a mounting groove parallel to the directional groove is opened on one side of the slide groove; the mounting groove is arranged below the directional groove; the interior of the movable plate has a accommodating chamber; the clamping assembly includes a driving column rotatably connected to the lower surface of the movable plate; a first gear is horizontally fixed to the lower end of the driving column; a first rack is meshed on the first gear; the first rack is fixed in the mounting groove; the upper end of the driving column extends into the accommodating chamber and a second gear is horizontally fixed thereon; a pair of parallel second racks are meshed on the second gear; the separated ends of the two second racks are respectively slidably inserted into the opposite side walls of the movable plate, and the separated ends of the two second racks are vertically fixed with positioning rods.

[0013] As a preferred technical solution of the present invention, the push-pull assembly includes a mounting block fixed to the lower surface of the second turntable; a transmission disk coaxially arranged with the carrying disk is horizontally fixed to the lower surface of the mounting block; the transmission disk and the carrying disk are connected by a ratchet structure; an electric push rod is vertically fixed to one side of the mounting block; a push-pull block is fixed to the output end of the electric push rod; an arc groove corresponding to the push-pull block is opened on the upper surface of the movable plate; the push-pull block can be slidably fitted in the arc groove.

[0014] As a preferred technical solution of the present invention, a limiting ring is coaxially fixed on the lower surface of the second turntable; the limiting ring has a conveying gap corresponding to the push-pull block; the push-pull block can drive the movable plate in and out of the conveying gap.

[0015] The present invention has the following beneficial effects:

[0016] The present invention pushes the movable plate from the support part to a transfer window through a push-pull component, then places the sample box on the upper surface of the movable plate, and then uses the push-pull component to push the movable plate carrying the sample box from the transfer window to the support part. During the resetting process of the movable plate, the clamping component on the movable plate is used to clamp and position the sample box, and then the rotating drive component is used to drive the carrier plate to rotate, and at the same time, the air inlet component and the air outlet component are used to dehumidify the sample box. When the movable plate carrying the sample box is in a corresponding position with another transfer window, the push-pull component is used to push the movable plate carrying the sample box from the support part to the other transfer window, and in this process, the clamping component releases the clamping of the sample box, and finally the sample box on the movable plate is taken away by the mechanical arm, thereby realizing the transfer of the sample box, which not only avoids the problem of condensation and frosting caused by the inflow of external gas into the cold storage when taking and placing the sample box, but also effectively improves the transfer efficiency of the sample, and also ensures the position stability of the sample box during the transfer process, greatly reduces the uncertainty of the mechanical arm taking and placing the sample box, and has a high market application value.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of a sample transfer mechanism of the present invention that can transfer multiple samples simultaneously.

[0020] Figure 2 for Figure 1 The main view of the structure.

[0021] Figure 3 It is a schematic diagram of the exploded structure among the rotary drive assembly, the bearing plate, the movable plate and the push-pull assembly of the present invention.

[0022] Figure 4 It is a schematic diagram of the explosion structure between the rotary drive assembly, the partition plate and the first rotating disk of the present invention.

[0023] Figure 5 It is a schematic diagram of the explosion structure between the push-pull assembly and the second rotating disk of the present invention.

[0024] Figure 6 It is a schematic structural diagram of the connection between the carrying plate, the movable plate, the clamping assembly and the push-pull assembly of the present invention.

[0025] Figure 7 It is a schematic structural diagram of the carrier plate of the present invention.

[0026] Figure 8 It is a structural schematic diagram of the chute of the present invention.

[0027] Fig. 9 It is a structural schematic diagram of the movable plate of the present invention.

[0028] Fig.10 for Fig. 9 The main view of the structure.

[0029] Fig.11 It is a schematic structural diagram of the clamping assembly of the present invention.

[0030] Fig.12 It is a schematic structural diagram of the push-pull assembly of the present invention.

[0031] Fig.13 It is a schematic structural diagram of the second turntable of the present invention.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 1-support box, 2-air inlet assembly, 3-air outlet assembly, 4-opening and closing door assembly, 5-rotation drive assembly, 6-carrying plate, 7-movable plate, 8-clamping assembly, 9-push-pull assembly, 10-partition, 11-first turntable, 12-second turntable, 13-limiting ring, 101-transfer window, 102-air inlet hole, 103-air outlet hole, 501-servo motor, 601-support part, 602-slide groove, 603- Orientation slot, 604-installation slot, 701-guide protrusion, 702-arc slot, 801-drive column, 802-first gear, 803-first rack, 804-second gear, 805-second rack, 806-positioning rod, 901-installation block, 902-transmission plate, 903-electric push rod, 904-push-pull block, 1001-first ventilation hole, 1101-second ventilation hole, 1201-third ventilation hole. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Specific embodiment one:

[0036] See also Figure 1-3As shown, the present invention is a sample transfer mechanism that can transfer multiple samples at the same time, including a support box 1, an air inlet assembly 2, an air outlet assembly 3 and a switch door assembly 4; the opposite side walls of the support box 1 are provided with transfer windows 101; the transfer window 101 is equipped with a conventional switch door assembly 4 in the art; the switch door assembly 4 is composed of an electric push rod and a baffle door vertically fixed to the output end of the electric push rod; the top wall of the support box 1 is provided with a plurality of air inlet holes 102, and the top wall of the support box 1 is equipped with air inlet assemblies 2 corresponding to the air inlet holes 102; the bottom wall of the support box 1 is provided with a plurality of air outlet holes 103, and the bottom wall of the support box 1 is equipped with air outlet assemblies 3 corresponding to the air outlet holes 103; the air outlet assembly 3 is arranged directly below the air inlet assembly 2; the air inlet assembly 2 and the air outlet assembly 3 are conventional structures in this field; the air inlet assembly 2 is composed of an air inlet box and an air inlet mechanism installed in the air inlet box; the air outlet assembly 3 is composed of an air outlet box and an air outlet mechanism installed in the air outlet box; a rotating drive assembly 5 is vertically installed inside the support box 1; a carrying plate 6 is horizontally installed on the rotating drive assembly 5; the circumferential side wall of the carrying plate 6 is integrally formed with a plurality of supporting parts 601 corresponding to the transfer window 101; a movable plate 7 for carrying a sample box is slidably connected to the upper surface of the supporting part 601; a clamping assembly 8 for positioning the sample box is installed on the movable plate 7; a push-pull assembly 9 is installed above the carrying plate 6; the push-pull assembly 9 is used to push the movable plate 7 from the supporting part 601 to the transfer window 101 or pull it from the transfer window 101 to the supporting part 601. When in use, the movable plate 7 is pushed from the support portion 601 to a transfer window 101 by the push-pull assembly 9, and then the sample box is placed on the upper surface of the movable plate 7, and then the push-pull assembly 9 is used to push the movable plate 7 carrying the sample box from a transfer window 101 to the support portion 601. During the resetting process of the movable plate 7, the clamping assembly 8 on the movable plate 7 is used to clamp and position the sample box, and then the rotating drive assembly 5 drives the carrier plate 6 to rotate, and at the same time, the air inlet assembly 2 and the air outlet assembly 3 are used to dehumidify the sample box. When the movable plate 7 carrying the sample box is aligned with another transfer window 101, the sample box is placed on the upper surface of the movable plate 7. After 101 is in the corresponding position, the movable plate 7 carrying the sample box is pushed from the support part 601 to another transfer window 101 by the push-pull component 9, and in this process, the clamping component 8 releases the clamping of the sample box, and finally the sample box on the movable plate 7 is taken away by the robot arm, thereby realizing the transfer of the sample box, which not only avoids the condensation and frost caused by the flow of external gas into the cold storage when taking and placing the sample box, but also effectively improves the sample transfer efficiency, and also ensures the position stability of the sample box during the transfer process, greatly reducing the uncertainty of the robot taking and placing the sample box.

[0037] Among them Figure 3-4As shown, the rotary drive assembly 5 includes a servo motor 501 vertically fixed on the inner bottom surface of the support box 1; the output shaft of the servo motor 501 is coaxially fixed on the lower surface of the carrier plate 6; a partition 10 is horizontally arranged between the servo motor 501 and the carrier plate 6; the partition 10 is fixed in the support box 1; a plurality of first ventilation holes 1001 are evenly distributed on the upper surface of the partition 10; the output shaft of the servo motor 501 is inserted into the partition 10, and the output shaft of the servo motor 501 and the partition 10 are clearance-matched; a first turntable 11 is horizontally attached to the upper surface of the partition 10; a plurality of second ventilation holes 1101 corresponding to the first ventilation holes 1001 are evenly distributed on the upper surface of the first turntable 11; the output shaft of the servo motor 501 is fixedly inserted into the first turntable 11. When the second ventilation holes 1101 are connected to the first ventilation holes 1001, the sample box is dehumidified, thereby ensuring the dehumidification effect.

[0038] Among them Figure 3 and Figure 5 As shown, the inner top surface of the support box 1 is rotatably connected to a horizontally arranged second turntable 12; the lower surface of the second turntable 12 is evenly provided with a plurality of third ventilation holes 1201 corresponding to the first ventilation holes 1001. When the third ventilation holes 1201 are connected to the air inlet holes 102 and the second ventilation holes 1101 are connected to the first ventilation holes 1001, the sample box is dehumidified, thereby ensuring the dehumidification effect. Specific embodiment 2:

[0040] Based on the specific embodiment 1, Figure 5-9 As shown, a slide groove 602 is provided on the upper surface of the support portion 601 along the radial direction of the carrier plate 6; the slide groove 602 passes through one end of the support portion 601 away from the carrier plate 6; orientation grooves 603 are provided on the opposite sides of the slide groove 602 along the length direction; a guide protrusion 701 corresponding to the slide groove 602 is integrally formed on the lower surface of the movable plate 7; the guide protrusion 701 is slidably fitted in the slide groove 602; convex strips corresponding to the orientation groove 603 are integrally formed on the opposite sides of the guide protrusion 701; the convex strips are slidably fitted in the orientation groove 603.

[0041] Among them Figure 7-11As shown, a mounting groove 604 parallel to the directional groove 603 is provided on one side of the slide groove 602; the mounting groove 604 is arranged below the directional groove 603; the interior of the movable plate 7 has a accommodating chamber; the clamping assembly 8 includes a driving column 801 rotatably connected to the lower surface of the movable plate 7; a first gear 802 is horizontally fixed to the lower end of the driving column 801; a first rack 803 is meshed on the first gear 802; the first rack 803 is fixed in the mounting groove 604; the upper end of the driving column 801 extends into the accommodating chamber and is horizontally fixed with a second gear 804; a pair of parallel second racks 805 are meshed on the second gear 804; the separated ends of the two second racks 805 are respectively slidably inserted into the opposite side walls of the movable plate 7, and the separated ends of the two second racks 805 are vertically fixed with a positioning rod 806 with a T-shaped structure. When the movable plate 7 moves toward the transfer window 101, the first gear 802 is caused to roll along the length direction of the first rack 803, and the second gear 804 is driven to rotate through the driving column 801, so that the two second racks 805 drive the two positioning rods 806 to move away from each other, leaving enough space for the sample box to be placed on the movable plate 7; when the movable plate 7 moves from the transfer window 101 to the support portion 601, the two positioning rods 806 are driven to move in a similar direction through the first gear 802, the driving column 801, the second gear 804 and the second rack 805, thereby achieving the clamping and positioning of the sample box. Specific embodiment three:

[0043] Based on the specific embodiment 2, Figure 3 , Figure 6 and Fig.12As shown, the push-pull assembly 9 includes a mounting block 901 fixed to the lower surface of the second turntable 12; a transmission disk 902 coaxially arranged with the supporting disk 6 is horizontally fixed to the lower surface of the mounting block 901; the transmission disk 902 and the supporting disk 6 are connected through a conventional ratchet structure in the field; the ratchet structure is composed of a ratchet coaxially fixed to the lower surface of the transmission disk 902 and a ratchet rotatably connected to the upper surface of the supporting disk 6; a conventional electric push rod 903 in the field is vertically fixed to one side of the mounting block 901; a push-pull block 904 is fixed to the output end of the electric push rod 903; an arc groove 702 corresponding to the push-pull block 904 is opened on the upper surface of the movable plate 7; the push-pull block 904 can be slidably fitted in the arc groove 702. When the carrying plate 6 rotates clockwise, since the transmission plate 902 is connected to the carrying plate 6 by a ratchet structure, the mounting block 901 is in a stationary state, that is, the electric push rod 903 is in a stationary state when the carrying plate 6 rotates clockwise; when the carrying plate 6 rotates counterclockwise, since the transmission plate 902 is connected to the carrying plate 6 by a ratchet structure, the electric push rod 903 is driven to rotate by the transmission plate 902 and the mounting block 901, thereby rotating the electric push rod 903 from one transfer window 101 to another transfer window 101, and then the carrying plate 6 is rotated clockwise again, so as to facilitate pushing the movable plate 7 carrying the sample box to the other transfer window 101 in sequence.

[0044] Among them Fig.13 As shown, the friction force between the upper surface of the second turntable 12 and the top wall of the support box 1 is greater than the rotational force generated when the carrier plate 6 rotates clockwise; a limit ring 13 is coaxially fixed to the lower surface of the second turntable 12; the limit ring 13 has a conveying notch corresponding to the push-pull block 904; the push-pull block 904 can drive the movable plate 7 in and out of the conveying notch; the upper surface of the movable plate 7 is provided with a matching groove corresponding to the limit ring 13; the limit ring 13 can be slidably matched in the matching groove. By sliding the limit ring 13 into the matching groove, the position stability of the movable plate 7 is ensured when the carrying plate 6 rotates; when the movable plate 7 corresponds to the transfer window 101 in position, the limit ring 13 is disengaged from the matching groove, thereby ensuring that the push-pull block 904 drives the movable plate 7 in and out of the conveying gap; by designing the friction force between the upper surface of the second turntable 12 and the top wall of the support box 1 to be greater than the rotational force generated when the carrying plate 6 rotates clockwise, the push-pull assembly 9 can be in a stationary state when the carrying plate 6 rotates clockwise, and the push-pull assembly 9 can rotate synchronously with the carrying plate 6 when the carrying plate rotates counterclockwise, thereby ensuring the use effect of the push-pull assembly 9.

[0045] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A sample transfer mechanism capable of transferring multiple samples simultaneously, comprising a support box (1), an air inlet assembly (2), an air outlet assembly (3) and a switch door assembly (4); transfer windows (101) are provided on opposite side walls of the support box (1); a switch door assembly (4) is installed at the transfer window (101); the characteristics are: The top wall of the support box (1) is provided with a plurality of air inlet holes (102), and the top wall of the support box (1) is provided with an air inlet assembly (2) corresponding to the air inlet holes (102); the bottom wall of the support box (1) is provided with a plurality of air outlet holes (103), and the bottom wall of the support box (1) is provided with an air outlet assembly (3) corresponding to the air outlet holes (103); A rotary drive assembly (5) is vertically installed inside the support box (1); a carrier plate (6) is horizontally installed on the rotary drive assembly (5); a plurality of support portions (601) corresponding to the transfer window (101) are evenly distributed on the circumferential side wall of the carrier plate (6); a movable plate (7) for carrying a sample box is slidably connected to the upper surface of the support portion (601); a clamping assembly (8) for positioning the sample box is installed on the movable plate (7); a push-pull assembly (9) is installed above the carrier plate (6); the push-pull assembly (9) is used to push the movable plate (7) from the support portion (601) to the transfer window (101) or to pull the movable plate (7) from the transfer window (101) to the support portion (601).

2. A sample delivery mechanism capable of delivering multiple samples simultaneously according to claim 1, characterized in that: The rotary drive assembly (5) comprises a servo motor (501) vertically fixed on the inner bottom surface of the support box (1); the output shaft of the servo motor (501) is coaxially fixed on the lower surface of the carrier plate (6).

3. A sample delivery mechanism capable of delivering multiple samples simultaneously according to claim 2, characterized in that: A partition (10) is horizontally arranged between the servo motor (501) and the carrier plate (6); the partition (10) is fixed in the support box (1); a plurality of first ventilation holes (1001) are evenly distributed on the upper surface of the partition (10); the output shaft of the servo motor (501) is inserted into the partition (10), and the output shaft of the servo motor (501) is clearance-matched with the partition (10).

4. A sample delivery mechanism capable of delivering multiple samples simultaneously according to claim 3, characterized in that: A first turntable (11) is horizontally attached to the upper surface of the partition (10); a plurality of second ventilation holes (1101) corresponding to the first ventilation holes (1001) are evenly distributed on the upper surface of the first turntable (11); and an output shaft of the servo motor (501) is fixedly inserted into the first turntable (11).

5. A sample delivery mechanism capable of delivering multiple samples simultaneously according to claim 3 or 4, characterized in that: The inner top surface of the support box (1) is rotatably connected to a horizontally arranged second turntable (12); a plurality of third ventilation holes (1201) corresponding to the first ventilation holes (1001) are evenly distributed on the lower surface of the second turntable (12).

6. A sample delivery mechanism capable of delivering multiple samples simultaneously according to claim 5, characterized in that: The upper surface of the support portion (601) is provided with a slide groove (602) along the radial direction of the carrier plate (6); the slide groove (602) passes through one end of the support portion (601) away from the carrier plate (6); the two opposite side surfaces of the slide groove (602) are provided with directional grooves (603) along the length direction; the lower surface of the movable plate (7) is provided with a guide protrusion (701) corresponding to the slide groove (602); the guide protrusion (701) is slidably fitted in the slide groove (602); the two opposite side surfaces of the guide protrusion (701) are provided with convex strips corresponding to the directional groove (603); the convex strips are slidably fitted in the directional groove (603).

7. A sample delivery mechanism capable of delivering multiple samples simultaneously according to claim 6, characterized in that: A mounting groove (604) parallel to the directional groove (603) is provided on one side of the slide groove (602); the mounting groove (604) is arranged below the directional groove (603); a receiving chamber is provided inside the movable plate (7); the clamping assembly (8) comprises a driving column (801) rotatably connected to the lower surface of the movable plate (7); a first gear (802) is horizontally fixed at the lower end of the driving column (801); a first rack (802) is meshed with the first gear (802); 03); the first rack (803) is fixed in the mounting groove (604); the upper end of the driving column (801) extends into the accommodating chamber and is horizontally fixed with a second gear (804); a pair of parallel second racks (805) are meshed on the second gear (804); the separated ends of the two second racks (805) are respectively slidably inserted on the opposite side walls of the movable plate (7), and the separated ends of the two second racks (805) are vertically fixed with positioning rods (806).

8. A sample delivery mechanism capable of delivering multiple samples simultaneously according to claim 6 or 7, characterized in that: The push-pull assembly (9) comprises a mounting block (901) fixed to the lower surface of the second rotating disk (12); a transmission disk (902) coaxially arranged with the supporting disk (6) is horizontally fixed on the lower surface of the mounting block (901); the transmission disk (902) and the supporting disk (6) are connected via a ratchet structure; an electric push rod (903) is vertically fixed to one side of the mounting block (901); a push-pull block (904) is fixed to the output end of the electric push rod (903); an arc groove (702) corresponding to the push-pull block (904) is provided on the upper surface of the movable plate (7); and the push-pull block (904) can be slidably fitted in the arc groove (702).

9. A sample delivery mechanism capable of delivering multiple samples simultaneously according to claim 8, characterized in that: A limiting ring (13) is coaxially fixed on the lower surface of the second rotating disk (12); the limiting ring (13) has a conveying notch corresponding to the push-pull block (904); the push-pull block (904) can drive the movable plate (7) to move in and out of the conveying notch.

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