Turntable rotating mechanism device of full-automatic nucleic acid extractor

Abstract

The utility model discloses a full-automatic nucleic acid extractor turntable rotating mechanism device which comprises a base, a stepping motor is fixedly mounted on one side of the base, a high-precision speed reducer is fixedly mounted at the top of the base, and a rotating shaft of the stepping motor is in transmission connection with the input end of the high-precision speed reducer. The output end of the high-precision speed reducer is fixedly provided with a turntable connecting piece, the turntable connecting piece is detachably provided with a turntable through a dismounting mechanism, the side surface of the turntable connecting piece is fixedly provided with a reset baffle plate for performing zero-point reset on the rotating position of the turntable, and one side of the fixed end of the high-precision speed reducer is fixedly provided with a reset photoelectric sensor; the reset photoelectric sensor is electrically connected with a controller used for controlling the stepping motor to operate. According to the utility model, the stepping motor and the high-precision speed reducer are matched with the turntable connecting piece, so that the turntable can be in high-precision and stable movement for a long time, the failure rate is low, and the later maintenance frequency is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of nucleic acid extractors, in particular to a turntable rotating mechanism device of a full-automatic nucleic acid extractor. Background Art

[0002] Nucleic acid extractors are instruments that use matching nucleic acid extraction reagents to automatically complete sample nucleic acid extraction. In almost every laboratory, separation and purification of biological molecules is very important and indispensable. Fully automatic nucleic acid extractors achieve automation in the nucleic acid extraction experiment, greatly saving manpower and bringing great convenience to experimenters. The operation and switching of different component reagents during the extraction process are also automated.

[0003] Most of the fully automatic nucleic acid extraction instruments currently on the market use a three-dimensional mechanical motion mechanism to enable the magnetic rod to reach the areas of different reagent components. This technology often requires a larger operating space, resulting in a large instrument size and occupying a larger space in the laboratory. In addition, the electrical control system is relatively complex and costly, but the control accuracy is not high. The coordinate accuracy of the instrument needs to be calibrated after a period of use.

[0004] Therefore, some fully automatic nucleic acid extractors on the market use a turntable to transport reagents, but the mechanical structure that drives the circular motion of the disk mostly uses a motor to drive a synchronous pulley to drive the turntable to realize the operation and switching of different component reagents. However, the synchronous belt will wear and loosen during use, and the operating accuracy will decrease after long-term use. It is necessary to regularly replace the synchronous belt or adjust the tension of the synchronous belt. As a result, it cannot operate with high precision for a long time, and after-sales calibration and maintenance are required in the later stage, which increases the difficulty of the work of after-sales personnel. In addition, most existing turntables are fixed with bolts at the output end of the driving structure used to drive the turntable to rotate, so when the turntable needs to be cleaned and disinfected, it is not convenient to disassemble and assemble the turntable.

[0005] For this purpose, we propose a turntable rotating mechanism device for a fully automatic nucleic acid extractor. Utility Model Content

[0006] The purpose of the utility model is to provide a turntable rotating mechanism device of a fully automatic nucleic acid extractor, so as to solve or at least alleviate one or more of the above-mentioned problems and other problems existing in the prior art.

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0008] A turntable rotating mechanism device of a fully automatic nucleic acid extractor comprises a turntable rotating assembly of the fully automatic nucleic acid extractor, wherein the turntable rotating assembly of the fully automatic nucleic acid extractor comprises a base, a stepper motor is fixedly mounted on one side of the base, a high-precision reducer is fixedly mounted on the top of the base, a rotating shaft of the stepper motor is transmission-connected to an input end of the high-precision reducer, a turntable connecting piece is fixedly mounted on the output end of the high-precision reducer, a turntable is detachably mounted on the turntable connecting piece through a disassembly mechanism, a reset baffle for resetting the rotation position of the turntable to zero is fixedly mounted on the side of the turntable connecting piece, a reset photoelectric sensor is fixedly mounted on one side of the fixed end of the high-precision reducer, and the reset photoelectric sensor is electrically connected to a controller for controlling the operation of the stepper motor.

[0009] In a turntable rotating mechanism device of a fully automatic nucleic acid extractor according to the utility model, a limiting rod is fixedly installed with a thread on the bottom of the turntable connecting piece, and a limiting block capable of limiting the limiting rod is fixedly installed on the upper end of the base.

[0010] In a turntable rotating mechanism device of a fully automatic nucleic acid extractor according to the utility model, the disassembly and assembly mechanism includes a clamping block and a limiting plate, the limiting plate is fixedly installed on the inner side wall of the turntable, an annular limiting groove is provided on the side of the turntable connecting piece, and a notch connected to the annular limiting groove is provided on the top of the turntable connecting piece. An assembly groove is provided on the turntable connecting piece, and the bottom of the assembly groove is connected to the top of the annular limiting groove. The clamping block is slidably arranged in the assembly groove, and a pull rod is fixedly connected to the top of the clamping block. The upper end of the pull rod slides out of the top of the turntable connecting piece. A spring is sleeved on the pull rod, and the bottom of the spring presses the top of the clamping block, and the upper end of the spring abuts against the top of the assembly groove. A limiting hole is provided on the top of the limiting plate. After the limiting plate is inserted from the notch, the limiting plate can rotate in the annular limiting groove, and the lower end of the clamping block can be inserted into the limiting hole to limit the turntable.

[0011] In a turntable rotating mechanism device of a fully automatic nucleic acid extractor according to the utility model, a handle is fixedly connected to the top of the pull rod.

[0012] In a turntable rotating mechanism device of a fully automatic nucleic acid extractor according to the utility model, an oblique cut is provided on one side of the limiting plate.

[0013] In a turntable rotating mechanism device of a fully automatic nucleic acid extractor according to the utility model, a protective cover is detachably clamped on the top of the turntable connector, and the handle is located on the inner side of the protective cover.

[0014] The utility model has at least the following beneficial effects:

[0015] The utility model provides a stepper motor, a high-precision reducer and a turntable connector, so that the turntable can be in high-precision and stable motion for a long time, with a low failure rate, and effectively reduces the maintenance frequency in the later stage;

[0016] The turntable can be quickly disassembled and assembled through the disassembly and assembly mechanism, so as to facilitate the cleaning and disinfection of the turntable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 This is a structural schematic diagram of the turntable rotating mechanism device of the fully automatic nucleic acid extraction instrument of the utility model;

[0019] Figure 2 This is a structural schematic diagram of the turntable rotating mechanism device of the fully automatic nucleic acid extraction instrument of the utility model when the turntable is not installed;

[0020] Figure 3 It is a structural schematic diagram of the turntable connecting member of the utility model;

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure when the turntable and the turntable connecting member of the utility model are connected;

[0022] Figure 5 It is a structural schematic diagram of the turntable of the utility model;

[0023] Figure 6 for Figure 4 A schematic diagram of the enlarged structure of part A;

[0024] Figure 7 for Figure 5 Schematic diagram of the enlarged structure of part B in FIG.

[0025] Description of Figure Numbers:

[0026] 1. Base; 2. Stepper motor; 3. High-precision reducer; 4. Turntable connector; 401. Notch; 402. Annular limit groove; 403. Assembly groove; 5. Turntable; 501. Limit plate; 502. Limit hole; 503. Bevel cut; 6. Protective cover; 7. Handle; 8. Pull rod; 9. Block; 10. Spring; 11. Reset baffle; 12. Reset photoelectric sensor; 13. Limit rod; 14. Limit block. DETAILED DESCRIPTION

[0027] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0028] Please refer to Figures 1 to 7 As shown, an embodiment of the utility model provides a turntable rotating mechanism device of a fully automatic nucleic acid extractor, including a turntable rotating assembly of the fully automatic nucleic acid extractor, the turntable rotating assembly of the fully automatic nucleic acid extractor includes a base 1, a stepper motor 2 is fixedly installed on one side of the base 1, a high-precision reducer 3 is fixedly installed on the top of the base 1, the rotating shaft of the stepper motor 2 is transmission-connected to the input end of the high-precision reducer 3, a turntable connector 4 is fixedly installed on the output end of the high-precision reducer 3, and a turntable 5 is detachably installed on the turntable connector 4 through a disassembly and assembly mechanism, a reset baffle 11 for zero-point reset of the rotation position of the turntable 5 is fixedly installed on the side of the turntable connector 4, a reset photoelectric sensor 12 is fixedly installed on one side of the fixed end of the high-precision reducer 3, and the reset photoelectric sensor 12 is electrically connected to a controller for controlling the operation of the stepper motor 2. It should be noted that the reset photoelectric sensor 12 in this embodiment may be selected from but not limited to a through-beam photoelectric sensor, and the specific model is not limited, as long as the operation requirements in this embodiment are met.

[0029] By setting the stepper motor 2, the high-precision reducer 3 and the turntable connector 4, the turntable 5 can be in high-precision and stable motion for a long time, with a low failure rate, which effectively reduces the maintenance frequency in the later stage.

[0030] Specifically, a limit rod 13 is fixedly installed on the bottom thread of the turntable connecting member 4, and a limit block 14 that can limit the limit rod 13 is fixedly installed on the upper end of the base 1. After the turntable 5 rotates one circle, the stepper motor 2 generally drives the turntable 5 to reverse and reset. If the stepper motor 2 fails, the turntable 5 can be further limited by the set limit rod 13 and limit block 14 to prevent the turntable 5 from always rotating in one direction, thereby reducing the loss of electrical equipment.

[0031] Specifically, the disassembly and assembly mechanism includes a clamping block 9 and a limiting plate 501, the limiting plate 501 is fixedly installed on the inner side wall of the turntable 5, the side of the turntable connecting member 4 is provided with an annular limiting groove 402, the top of the turntable connecting member 4 is provided with a notch 401 connected to the annular limiting groove 402, the turntable connecting member 4 is provided with an assembly groove 403, the bottom of the assembly groove 403 is connected to the top of the annular limiting groove 402, the clamping block 9 is slidably arranged in the assembly groove 403, the top of the clamping block 9 is fixedly connected with a pull rod 8, and the upper end of the pull rod 8 slides out At the top of the turntable connecting member 4, a spring 10 is sleeved on the pull rod 8, and the bottom of the spring 10 presses the top of the block 9. The upper end of the spring 10 rests on the top of the assembly groove 403. A limiting hole 502 is opened on the top of the limiting plate 501. After the limiting plate 501 is inserted from the notch 401, the limiting plate 501 can rotate in the annular limiting groove 402, and the lower end of the block 9 can be inserted into the limiting hole 502 to limit the turntable 5. In order to facilitate the insertion of the block 9 into the limiting hole 502, an oblique cut 503 is opened on one side of the limiting plate 501.

[0032] By adopting the above technical solution, the installation steps of the turntable 5 are as follows: align the limiting plate 501 on the turntable 5 with the notch 401, and then insert the limiting plate 501 from the notch 401. At this time, the turntable 5 is sleeved on the turntable connecting member 4. When the limiting plate 501 reaches the annular limiting groove 402, the turntable 5 is rotated, so that the limiting plate 501 rotates with the turntable 5. When the limiting plate 501 rotates to below the clamping block 9, the lower end of the clamping block 9 moves upward along the oblique cut 503. When the limiting hole 502 is located directly below the clamping block 9, the clamping block 9 is inserted into the limiting hole 502 under the action of the spring 10, and the installation of the turntable 5 is completed.

[0033] When removing, just pull the pull rod 8 upwards to pull the block 9 out of the limiting hole 502, then rotate the turntable 5 in the opposite direction, rotate the limiting plate 501 to just below the notch 401, and then lift the turntable 5 upwards to remove it from the turntable connector 4.

[0034] Specifically, in order to facilitate lifting the pull rod 8 , a handle 7 is fixedly connected to the top of the pull rod 8 .

[0035] Specifically, in order to improve the aesthetics, a protective cover 6 is detachably connected to the top of the turntable connector 4 , and a handle 7 is located on the inner side of the protective cover 6 .

[0036] The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A turntable rotating mechanism device for a fully automatic nucleic acid extraction instrument, characterized in that: The invention comprises a turntable rotating assembly of a fully automatic nucleic acid extractor, wherein the turntable rotating assembly comprises a base (1), a stepper motor (2) is fixedly mounted on one side of the base (1), a high-precision reducer (3) is fixedly mounted on the top of the base (1), a rotating shaft of the stepper motor (2) is drivingly connected to an input end of the high-precision reducer (3), a turntable connecting member (4) is fixedly mounted on the output end of the high-precision reducer (3), a turntable (5) is detachably mounted on the turntable connecting member (4) through a disassembly mechanism, a reset baffle (11) for zero-point reset of the rotation position of the turntable (5) is fixedly mounted on the side of the turntable connecting member (4), a reset photoelectric sensor (12) is fixedly mounted on one side of the fixed end of the high-precision reducer (3), and the reset photoelectric sensor (12) is electrically connected to a controller for controlling the operation of the stepper motor (2).

2. The turntable rotating mechanism device of a fully automatic nucleic acid extractor according to claim 1, characterized in that: A limit rod (13) is fixedly installed via a thread on the bottom of the turntable connecting member (4), and a limit block (14) capable of limiting the limit rod (13) is fixedly installed on the upper end of the base (1).

3. The turntable rotating mechanism device of a fully automatic nucleic acid extractor according to claim 1, characterized in that: The disassembly and assembly mechanism comprises a clamping block (9) and a limiting plate (501), wherein the limiting plate (501) is fixedly mounted on the inner side wall of the turntable (5), an annular limiting groove (402) is provided on the side of the turntable connecting member (4), a notch (401) connected to the annular limiting groove (402) is provided on the top of the turntable connecting member (4), an assembly groove (403) is provided on the turntable connecting member (4), the bottom of the assembly groove (403) is connected to the top of the annular limiting groove (402), the clamping block (9) is slidably arranged in the assembly groove (403), and the top of the clamping block (9) is fixedly connected to a pull rod. Rod (8), the upper end of the pull rod (8) slides out of the top of the turntable connecting member (4), a spring (10) is sleeved on the pull rod (8), the bottom of the spring (10) presses the top of the clamping block (9), the upper end of the spring (10) abuts against the top of the assembly groove (403), a limiting hole (502) is provided on the top of the limiting plate (501), after the limiting plate (501) is inserted from the notch (401), the limiting plate (501) can rotate in the annular limiting groove (402), and the lower end of the clamping block (9) can be inserted into the limiting hole (502) to limit the turntable (5).

4. The turntable rotating mechanism device of the fully automatic nucleic acid extractor according to claim 3, characterized in that: The top of the pull rod (8) is fixedly connected with a handle (7).

5. The turntable rotating mechanism device of the fully automatic nucleic acid extractor according to claim 4, characterized in that: An oblique cutout (503) is provided on one side of the limiting plate (501).

6. The turntable rotating mechanism device of the fully automatic nucleic acid extractor according to claim 4, characterized in that: A protective cover (6) is detachably snap-connected to the top of the turntable connector (4), and the handle (7) is located inside the protective cover (6).

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