Pipetting mechanism and automatic detector

Abstract

The embodiment of the utility model discloses a pipetting mechanism and an automatic detector, the pipetting mechanism comprises a rack, a driving assembly, a connecting piece, a convex structure, a rotating shaft and a pipetting needle, the driving assembly is installed on the rack and connected with the connecting piece, the rotating shaft is rotatably connected to the connecting piece, the pipetting needle is connected to the rotating shaft, the convex structure is connected to the rack, and the connecting piece is connected to the rotating shaft. The rotating shaft is provided with a traction groove, a protruding structure is arranged in the traction groove and used for pulling the rotating shaft to move, and when the driving assembly drives the connecting piece to drive the rotating shaft to move in the first direction, the protruding structure moves in the traction groove so as to pull the rotating shaft to move or rotate in the first direction. Therefore, the pipetting needle can move the sample from the current position to the designated position, manual operation is not needed, the automation degree is high, and the sample testing or detecting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of testing equipment, in particular to a liquid transfer mechanism and an automatic detector. Background Art

[0002] When testing or inspecting samples in hospitals, laboratories, or research institutions, liquids need to be moved to designated locations. In existing technologies, most of these processes are performed manually, which is not conducive to achieving efficient and fully automated pipetting, thus affecting the efficiency of sample testing or inspection. Utility Model Content

[0003] Based on this, it is necessary to provide a pipetting mechanism and an automated detector to solve the technical problem in the existing technology that most of the manual operations are done, and manual pipetting is not conducive to achieving efficient full automation, thereby affecting the efficiency of sample analysis or detection.

[0004] In a first aspect, the present invention provides a pipetting mechanism, comprising a frame, a drive assembly, a connecting member, a protruding structure, a rotating shaft, and a pipetting needle, wherein the drive assembly is mounted on the frame and connected to the connecting member, the rotating shaft is rotatably connected to the connecting member, the pipetting needle is connected to the rotating shaft, the protruding structure is connected to the frame, the rotating shaft is provided with a traction groove, and the protruding structure is provided in the traction groove and is used to pull the rotating shaft to move;

[0005] When the driving assembly drives the connecting member to drive the rotating shaft to move along the first direction, the protruding structure moves in the traction groove to pull the rotating shaft to move or rotate along the first direction.

[0006] In one embodiment, the traction groove includes a first slide groove and a second slide groove connected to the first slide groove, the first slide groove is used to guide the rotating shaft to move along the first direction, and the second slide groove is used to guide the rotating shaft to rotate.

[0007] In one embodiment, the first sliding groove is a straight groove, and the second sliding groove is an arc groove.

[0008] In one embodiment, the protruding structure includes a roller, a base and an axle, the base is connected to the frame, the axle is connected to the base, the roller is rotatably connected to the axle, and is disposed in the traction groove.

[0009] In one embodiment, the pipetting mechanism further includes a bearing, an outer ring of the bearing is mounted on the connecting member, and an inner ring of the bearing is mounted on the rotating shaft.

[0010] In one embodiment, the pipetting mechanism further includes a guide member and an adapter plate, wherein the guide member is mounted on the frame and extends along the first direction, and the adapter plate is mounted on the connecting member, and the adapter plate is slidably connected to the guide member.

[0011] In one embodiment, the pipetting mechanism further includes a swing arm, and the pipetting needle is connected to the rotating shaft via the swing arm.

[0012] In one embodiment, the driving assembly includes a driving motor, a transmission member, a driving wheel and a driven wheel. The driving motor is installed on the frame and connected to the driving wheel. The driven wheel is rotatably connected to the frame. The transmission member is wrapped around the driving wheel and the driven wheel and is connected to the connecting member.

[0013] In one embodiment, the pipetting mechanism further includes a sensing piece and a sensor, wherein the sensing piece is mounted on the connecting member, and the sensor is mounted on the frame and is used to sense the sensing piece.

[0014] In the second aspect, the utility model also provides an automated detector, which includes a transfer module, a detection module and a pipetting mechanism of any of the above embodiments, wherein the transfer module is used to transfer the sample pipetted by the pipetting mechanism to the detection module, and the detection module is used to detect the sample.

[0015] The implementation of the present invention will have the following beneficial effects:

[0016] The present invention adopts a pipetting mechanism and an automated detector. The driving assembly of the pipetting mechanism is installed on a frame and connected to a connecting piece. The rotating shaft is rotatably connected to the connecting piece. The pipetting needle is connected to the rotating shaft. The protruding structure is connected to the frame. The rotating shaft is provided with a traction groove. The traction groove is provided with a protruding structure and is used to pull the rotating shaft to move. When the driving assembly drives the connecting piece to drive the rotating shaft to move in a first direction, the protruding structure moves in the traction groove to pull the rotating shaft to move or rotate in the first direction, so that the pipetting needle can move the sample from the current position to the specified position. No manual operation is required, and the degree of automation is high, thereby improving the efficiency of sample testing or detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] in:

[0019] Figure 1 Schematic diagram of an axonometric view of a pipetting mechanism in one embodiment.

[0020] Figure 2 for Figure 1 Exploded view of the pipetting mechanism shown.

[0021] Figure 3 for Figure 2 A partial enlarged schematic diagram of part A in the pipetting mechanism shown.

[0022] Figure 4 for Figure 2 Schematic diagram of the moving mechanism shown from another angle.

[0023] Reference numerals:

[0024] 1. Frame; 11. Guide; 12. Adapter plate; 13. Swing arm; 14. Sensor; 15. Sensor;

[0025] 2. Drive assembly; 21. Drive motor; 22. Transmission member; 23. Driving wheel; 24. Driven wheel;

[0026] 3. Connecting part; 4. Roller; 5. Rotating shaft; 51. First slide groove; 52. Second slide groove; 6. Pipette needle; 7. Base; 8. Shaft; 9. Bearing. DETAILED DESCRIPTION

[0027] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0029] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0030] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0031] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.

[0032] Please combine Figures 1 to 4 Now, the pipetting mechanism provided by the present invention is described. The pipetting mechanism is used in an automated detector.

[0033] The pipetting mechanism includes a frame 1, a driving assembly 2, a connecting member 3, a roller 4, a rotating shaft 5 and a pipetting needle 6. The driving assembly 2 is installed on the frame 1 and connected to the connecting member 3. The rotating shaft 5 is rotatably connected to the connecting member 3. The pipetting needle 6 is connected to the rotating shaft 5. The protruding structure is connected to the frame 1. The rotating shaft 5 is provided with a traction groove. The traction groove is provided with a protruding structure, which is used to pull the rotating shaft 5 to move.

[0034] When the driving assembly 2 drives the connecting member 3 to drive the rotating shaft 5 to move along the first direction, the protruding structure moves in the traction groove to pull the rotating shaft 5 to move or rotate along the first direction.

[0035] It can be understood that the driving assembly 2 of the pipetting mechanism is installed on the frame 1 and connected to the connecting member 3, the rotating shaft 5 is rotatably connected to the connecting member 3, the pipetting needle 6 is connected to the rotating shaft 5, and the protruding structure moves in the traction groove to pull the rotating shaft 5 to move or rotate along the first direction, so that the pipetting needle 6 can move the sample from the current position to the specified position without manual operation, and the degree of automation is high, so as to improve the efficiency of sample analysis or detection.

[0036] Specifically, in the initial state, after the pipette needle 6 absorbs the sample, the driving component 2 drives the connecting member 3 to drive the rotating shaft 5 to move along the first direction, and the rotating shaft 5 drives the pipette needle 6 to move along the first direction. At this time, the protruding structure moves along the traction groove. Under the limitation of the traction groove, the protruding structure drives the rotating shaft 5 to rotate along the axis of the rotating shaft 5, and the rotating shaft 5 drives the pipette needle 6 to rotate, so that the pipette needle 6 drives the sample to move from the current position to the specified position.

[0037] It should be noted that, depending on the placement of the pipetting mechanism, the first direction may be a vertical direction or a horizontal direction. For ease of understanding, in the relevant embodiment, the pipetting mechanism is placed vertically, and the first direction is a vertical direction.

[0038] In this embodiment, the traction groove includes a first chute 51 and a second chute 52 connected to the first chute 51. The first chute 51 is used to guide the rotating shaft 5 to move in the first direction, and the second chute 52 is used to guide the rotating shaft 5 to rotate. In this way, when the protruding structure moves in the first chute 51, the rotating shaft 5 moves in the first direction. When the protruding structure moves in the second chute 52, the roller 4 drives the rotating shaft 5 to rotate about the axis of the rotating shaft 5.

[0039] Specifically, the first sliding groove 51 is a straight groove, and the second sliding groove 52 is an arc groove.

[0040] In one embodiment, if Figures 2 to 4 As shown, the raised structure includes a roller 4, a base 7, and a shaft 8. The base 7 is connected to the frame 1, and the shaft 8 is connected to the base 7. The roller 4 is rotatably connected to the shaft 8 and is disposed in the traction groove. The base 7 allows the shaft 8 to be mounted on the frame 1 through the base 7. The shaft 8 allows the roller 4 to be rotatably connected to the shaft 8. As a result, when the roller 4 moves from the first chute 51 to the second chute 52, the roller 4 rolls in contact with the groove walls of the first chute 51 and the second chute 52, thereby reducing friction.

[0041] In one embodiment, if Figure 1 and Figure 2 As shown, the pipetting mechanism further includes a bearing 9, the outer ring of the bearing 9 is mounted on the connecting member 3, and the inner ring of the bearing 9 is mounted on the rotating shaft 5. By providing the bearing 9, the rotating shaft 5 can rotate more smoothly relative to the connecting member 3.

[0042] In one embodiment, if Figure 1 As shown, the pipetting mechanism further includes a guide member 11 and an adapter plate 12. The guide member 11 is mounted on the frame 1 and extends in a first direction. The adapter plate 12 is mounted on the connector 3 and is slidably connected to the guide member 11. The provision of the guide member 11 ensures that when the drive assembly 2 drives the connector 3 to move the rotating shaft 5 in the first direction, the connector 3 also drives the adapter plate 12 to move along the guide member 11, thereby guiding the rotating shaft 5. Specifically, the guide member 11 may be a guide rail, or other guide forms such as a guide rod frame linear bearing.

[0043] In this embodiment, the frame 1 is provided with a guide groove, and the rotating shaft 5 passes through the guide groove. By providing the guide groove, the guide groove can guide the rotating shaft 5 along the first direction.

[0044] In one embodiment, if Figure 1 and Figure 2As shown, the pipetting mechanism further includes a swing arm 13, through which the pipetting needle 6 is connected to the rotating shaft 5. By providing the swing arm 13, when the rotating shaft 5 rotates along its axis, the rotating shaft 5 drives the swing arm 13 to rotate, and the swing arm 13 drives the pipetting needle 6 to rotate, thereby causing the pipetting needle 6 to rotate to a specified position.

[0045] In this embodiment, the length of the swing arm 13 can be selected according to actual conditions.

[0046] In one embodiment, if Figure 1 As shown, the drive assembly 2 includes a drive motor 21, a transmission member 22, a driving wheel 23, and a driven wheel 24. The drive motor 21 is mounted on the frame 1 and connected to the driving wheel 23. The driven wheel 24 is rotatably connected to the frame 1. The transmission member 22 is wound around the driving wheel 23 and the driven wheel 24 and is connected to the connecting member 3. The drive motor 21 drives the driving wheel 23 to rotate, and the driving wheel 23 drives the transmission member 22 to move. The transmission member 22 then drives the driven wheel 24 to rotate. The transmission member 22 also drives the connecting member 3 to move in the first direction, and the connecting member 3 drives the rotating shaft 5 and the pipette needle 6 to move in the first direction. Specifically, the transmission member 22 can be a synchronous belt. The transmission method of the drive assembly 2 can be a synchronous wheel and synchronous belt method, or other forms of belt drive or chain drive.

[0047] In this embodiment, the pipetting mechanism further includes a sensing plate 14 and a sensor 15. The sensing plate 14 is mounted on the connecting member 3, and the sensor 15 is mounted on the frame 1 and is used to sense the sensing plate 14. By configuring the sensing plate 14 and the sensor 15, when the transmission member 22 drives the connecting member 3 to move in the first direction, the connecting member 3 drives the sensing plate 14 to move. When the sensor 15 senses the sensing plate 14, the rotating shaft 5 is at the zero position.

[0048] The present invention also provides an automated detector, which includes a transfer module, a detection module and a pipetting mechanism of any of the above embodiments. The transfer module is used to transfer the sample pipetted by the pipetting mechanism to the detection module, and the detection module is used to detect the sample.

[0049] It is understandable that the automated detector in this embodiment uses the above-mentioned pipetting mechanism, the driving assembly 2 of which is mounted on the frame 1 and connected to the connector 3, the rotating shaft 5 is rotatably connected to the connector 3, the pipetting needle 6 is connected to the rotating shaft 5, and the protruding structure moves in the traction groove to drive the rotating shaft 5 to move along the first direction and then rotate, so that the pipetting needle 6 can move the sample from the current position to the specified position without manual operation, and the degree of automation is high, so as to improve the efficiency of sample testing or detection. The various technical features of the above-mentioned embodiments can be combined arbitrarily. In order to keep the description concise, not all possible combinations of the various technical features in the above-mentioned 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.

[0050] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A pipetting mechanism, characterized in that: The pipetting mechanism includes a frame, a driving assembly, a connecting piece, a protruding structure, a rotating shaft, and a pipetting needle. The driving assembly is mounted on the frame and connected to the connecting piece. The rotating shaft is rotatably connected to the connecting piece. The pipetting needle is connected to the rotating shaft. The protruding structure is connected to the frame. The rotating shaft is provided with a traction groove. The protruding structure is provided in the traction groove and is used to pull the rotating shaft to move. When the driving assembly drives the connecting member to drive the rotating shaft to move along the first direction, the protruding structure moves in the traction groove to pull the rotating shaft to move or rotate along the first direction.

2. The pipetting mechanism according to claim 1, characterized in that: The traction groove includes a first slide groove and a second slide groove connected to the first slide groove, the first slide groove is used to guide the rotating shaft to move along the first direction, and the second slide groove is used to guide the rotating shaft to rotate.

3. The pipetting mechanism according to claim 2, characterized in that: The first sliding groove is a straight groove, and the second sliding groove is an arc groove.

4. The pipetting mechanism according to claim 1, characterized in that: The protruding structure includes a roller, a seat and an axle. The seat is connected to the frame, the axle is connected to the seat, and the roller is rotatably connected to the axle and is arranged in the traction groove.

5. The pipetting mechanism according to claim 1, characterized in that: The pipetting mechanism further comprises a bearing, wherein the outer ring of the bearing is mounted on the connecting member, and the inner ring of the bearing is mounted on the rotating shaft.

6. The pipetting mechanism according to claim 1, characterized in that: The pipetting mechanism further includes a guide member and an adapter plate. The guide member is mounted on the frame and extends along the first direction. The adapter plate is mounted on the connecting member and is slidably connected to the guide member.

7. The pipetting mechanism according to claim 1, characterized in that: The pipetting mechanism further includes a swing arm, and the pipetting needle is connected to the rotating shaft via the swing arm.

8. The pipetting mechanism according to claim 1, characterized in that: The driving assembly includes a driving motor, a transmission member, a driving wheel and a driven wheel. The driving motor is installed on the frame and connected to the driving wheel. The driven wheel is rotatably connected to the frame. The transmission member is wound around the driving wheel and the driven wheel and is connected to the connecting member.

9. The pipetting mechanism according to claim 8, characterized in that: The pipetting mechanism further comprises a sensing piece and a sensor. The sensing piece is mounted on the connecting piece, and the sensor is mounted on the frame and is used to sense the sensing piece.

10. An automated detector, characterized in that: The automated detector includes a transfer module, a detection module, and a pipetting mechanism as described in any one of claims 1 to 9, wherein the transfer module is used to transfer the sample pipetted by the pipetting mechanism to the detection module, and the detection module is used to detect the sample.

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