Centrifugal commutation device

Abstract

The present invention provides a centrifugal commutation device, which is applied in the technical field of sample centrifugal processing equipment. The key points of its technical solution are as follows: It includes a transfer rack, a number of buffer modules rotatably arranged on the transfer rack and used for caching sample tubes, a rotary assembly arranged between the transfer rack and the buffer modules and used for driving the buffer modules to rotate back, and a transfer driving assembly used for driving the transfer rack to rotate; while the transfer driving assembly drives the transfer rack and drives the buffer modules to rotate synchronously, the rotary assembly drives the buffer modules to rotate in the opposite direction so that the buffer modules always maintain the same direction; the technical effect is: greatly improving the efficiency of sample input and output, and the centrifugal module is utilized efficiently.

Description

Technical Field

[0001] The present invention relates to the technical field of sample centrifugation processing equipment, and particularly to a centrifugal position-changing device. Background Art

[0002] Before a sample enters an analytical instrument for detection, it generally needs to be pre-treated. Sample pre-treatment includes steps such as loading, centrifugation, and opening the lid. A tray is provided between the loading module, the centrifugation module, and the lid-opening module. The tray is used to hold sample tubes. An empty tray is provided between the loading module and the centrifugation module. The sample tube on the loading module is placed on the empty tray by the grasping of a manipulator, facilitating the subsequent loading of the sample tube on the tray into the centrifugation module by the manipulator. An empty tray is provided between the centrifugation module and the lid-opening module. The sample tube after centrifugation is placed on the empty tray by the grasping of the manipulator, facilitating the subsequent loading of the centrifuged sample tube on the tray into the lid-opening module for lid opening.

[0003] Among them, the centrifugation efficiency of the sample tube depends on the grasping efficiency of the manipulator (the manipulator needs to load and unload the centrifugation module before and after centrifugation). To improve the centrifugation efficiency, several more groups of trays need to be configured between each module, so that the manipulator can continuously grasp. However, configuring several more groups of trays increases the production space, and the moving stroke of the manipulator increases, resulting in an extended grasping time of the manipulator, and the centrifugation efficiency is not significantly improved. Summary of the Invention

[0004] The purpose of the present invention is to provide a centrifugal position-changing device, and its advantage is that it greatly improves the input and output efficiency of samples, and the centrifugation module is efficiently utilized.

[0005] To achieve the above object and other related objects, the present invention provides the following technical solutions:

[0006] A centrifugal position-changing device includes a transfer rack, a plurality of buffer modules rotatably arranged on the transfer rack and used for buffering sample tubes, a rotary assembly arranged between the transfer rack and the buffer modules and used for driving the buffer modules to rotate in reverse, and a transfer driving assembly used for driving the transfer rack to rotate.

[0007] While the transfer driving assembly drives the transfer rack and drives the buffer modules to rotate synchronously, the rotary assembly drives the buffer modules to rotate in reverse so that the buffer modules always maintain the same direction.

[0008] In an embodiment of the present invention, it further includes a fixing plate.

[0009] The transfer driving assembly includes a transfer driving member fixed on the fixing plate, a fixed shaft fixedly installed on the fixing plate, a reduction turntable rotatably connected to the fixed shaft, and a reduction gear set connecting the transfer driving member and the reduction turntable.

[0010] In an embodiment of the present invention, the buffer module includes a loading tray and a pallet mounted on the loading tray.

[0011] In an embodiment of the present invention, the transfer rack includes a first moving disk and a second moving disk, the first moving disk and the second moving disk are arranged parallel to each other up and down, and the first moving disk is fixedly connected to the decelerating turntable;

[0012] The rotating assembly includes eccentric rotating shafts equal in number to the buffer module and arranged between the first moving disk and the second moving disk, and an eccentric fixed shaft with one end fixedly connected to the fixed shaft and the other end rotatably connected to the second moving disk;

[0013] The first moving disk is rotatably connected to one end of the eccentric rotating shaft, and the second moving disk and the loading tray are rotatably connected to the other end of the eccentric rotating shaft.

[0014] In an embodiment of the present invention, the eccentric fixed shaft is rotatably connected to the center of the second moving disk.

[0015] In an embodiment of the present invention, rotating shafts equal in number to the buffer module are rotatably arranged on the transfer rack, and the rotating shafts are fixedly connected to the transfer disk.

[0016] In an embodiment of the present invention, the rotating assembly includes synchronous belt mechanisms equal in number to the buffer module;

[0017] The synchronous belt mechanism includes a first pulley fixed on the fixed shaft, a second pulley fixed on the rotating shaft, and a synchronous belt sleeved on the first pulley and the second pulley.

[0018] In an embodiment of the present invention, the eccentric fixed shaft includes an eccentric plate, and a first fixed shaft and a second fixed shaft respectively fixed on both sides of the eccentric plate;

[0019] The axes of the first fixed shaft and the second fixed shaft are arranged offset.

[0020] In an embodiment of the present invention, the eccentric rotating shaft includes a wheel plate, and a first rotating shaft and a second rotating shaft respectively rotatably arranged on both sides of the wheel plate;

[0021] The axes of the first rotating shaft and the second rotating shaft are arranged offset.

[0022] In an embodiment of the present invention, a sensor is fixedly arranged on the fixed plate, and an induction piece cooperating with the sensor is arranged on the decelerating turntable.

[0023] As described above, a centrifugal displacement device of the present invention has the following beneficial effects:

[0024] 1. The transfer drive assembly drives the transfer rack and drives the buffer module to rotate synchronously. The functions of each buffer module are different when it rotates to different positions, which greatly improves the efficiency of sample input and output, and the centrifugal module is utilized efficiently.

[0025] 2. Through the setting of the slewing assembly, the direction of each buffer module remains unchanged during position change, and after the position of the buffer module is changed, the relative positions of each sample remain unchanged; thus reducing the number of coordinates for the manipulator to grasp and avoiding problems such as inaccurate positioning and easy errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0027] Figure 2 is a side view of the overall structure of Embodiment 1 of the present invention;

[0028] Figure 3 is a schematic diagram of the structure of the transfer drive assembly of Embodiment 1 of the present invention;

[0029] Figure 4 is a schematic diagram of the structure of the eccentric fixed shaft of Embodiment 1 of the present invention;

[0030] Figure 5 is a schematic diagram of the structure of the eccentric rotating shaft of Embodiment 1 of the present invention;

[0031] Figure 6 is a schematic diagram of the overall structure of Embodiment 2 of the present invention;

[0032] Figure 7 is a side view of the overall structure of Embodiment 2 of the present invention;

[0033] Figure 8 is a schematic diagram of the connection relationship between the second pulley and the rotating shaft of Embodiment 2 of the present invention;

[0034] Figure 9 is a schematic diagram of the connection relationship between the transfer drive assembly and the first pulley of Embodiment 2 of the present invention;

[0035] Figure 10 is a schematic diagram of the connection relationship between the first pulley and the fixed shaft of Embodiment 2 of the present invention.

[0036] Reference numerals: 1, fixed plate; 2, transfer rack; 3, buffer module; 31, loading tray; 32, pallet; 4, transfer drive assembly; 41, transfer drive member; 42, fixed shaft; 43, reduction turntable; 44, reduction gear set; 5, slewing assembly; 211, first moving plate; 212, second moving plate; 511, eccentric rotating shaft; 512, eccentric fixed shaft; 5121, eccentric plate; 5122, first fixed shaft; 5123, second fixed shaft; 5111, wheel plate; 5112, first rotating shaft; 5113, second rotating shaft; 6, rotating shaft; 521, first belt pulley; 522, second belt pulley; 523, synchronous belt; 7, sensor; 8, sensing piece; 221, rotating arm. Detailed implementation manners

[0037] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0038] Please refer to Figures 1 to 10 . It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limiting conditions under which the present invention can be implemented. Therefore, they do not have technical essential meanings. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of clear narration, and are not used to limit the scope under which the present invention can be implemented. The change or adjustment of their relative relationships, without substantial change of the technical content, should also be regarded as the scope under which the present invention can be implemented.

[0039] Embodiment 1

[0040] Please refer to Figure 1 and Figure 2 , the present invention provides a centrifugal displacement device, including a fixed plate 1, a transfer rack 2, a buffer module 3, a slewing assembly 5 and a transfer drive assembly 4;

[0041] wherein the buffer module 3 is used for buffering sample tubes, and a plurality of buffer modules 3 are rotatably arranged on the transfer rack 2; the slewing assembly 5 is arranged between the transfer rack 2 and the buffer module 3 and is used for driving the buffer module 3 to slewing; the transfer drive assembly 4 is used for driving the transfer rack 2 to rotate;

[0042] While the transfer drive assembly 4 drives the transfer rack 2 and drives the buffer module 3 to rotate synchronously, the rotary assembly 5 drives the buffer module 3 to rotate in the opposite direction so that the buffer module 3 always maintains the same direction. Furthermore, after the position of the buffer module 3 is changed, the relative positions of each sample remain unchanged; thereby reducing the number of coordinates for the manipulator to grasp and avoiding problems such as inaccurate positioning and easy errors.

[0043] Please refer to Figure 3 , the transfer drive assembly 4 includes a transfer drive member 41, a fixed shaft 42, a reduction turntable 43, and a reduction gear set 44; the transfer drive member 41 in this embodiment can be a servo motor, and the servo motor is bolted to the fixed plate 1; the fixed shaft 42 is bolted to the upper end of the fixed plate 1, the reduction turntable 43 is rotatably connected to the fixed shaft 42 through a bearing, and the reduction turntable 43 is connected to the servo motor through the reduction gear set 44; the reduction gear set 44 in this embodiment includes a large gear and a small gear that mesh with each other, wherein the small gear is fixed on the output shaft of the servo motor, and the large gear is fixed on the outer peripheral side wall of the reduction turntable 43, and power is transmitted through gear meshing to realize the rotation of the reduction turntable 43.

[0044] Please refer to Figure 1 and Figure 2 , a plurality of buffer modules 3 are evenly distributed along the circumference of the transfer rack 2. In this embodiment, three buffer modules 3 are provided, and the included angle between two adjacent buffer modules 3 is 120°. The buffer module 3 includes a loading tray 31 and a tray 32 installed on the loading tray 31. In this embodiment, four trays 32 are installed on the loading tray, and the four trays 32 are distributed in a cross shape on the loading tray.

[0045] Please refer to Figure 1 and Figure 2 , the transfer rack 2 includes a first moving disk 211 and a second moving disk 212 that are arranged parallel to each other up and down. The first moving disk 211 and the second moving disk 212 in this embodiment are equilateral triangle structures; the first moving disk 211 is bolted to the top of the reduction turntable 43 and rotates synchronously with it; the fixed shaft 42 passes through the middle of the first moving disk 211.

[0046] The rotary assembly 5 includes an eccentric rotating shaft 511 with the same number as the buffer module 3 and arranged between the first moving disk 211 and the second moving disk 212, and an eccentric fixed shaft 512 with one end fixedly connected to the fixed shaft 42 and the other end rotatably connected to the second moving disk 212; in this embodiment, three eccentric rotating shafts 511 are provided between the first moving disk 211 and the second moving disk 212; the three eccentric rotating shafts 511 are respectively arranged at positions close to the three corners of the first moving disk 211 and the second moving disk 212.

[0047] Please refer to Figure 4 and Figure 5, the eccentric fixed shaft 512 is rotatably connected to the center of the second moving disk 212; the eccentric fixed shaft 512 includes an eccentric plate 5121 and a first fixed shaft 5122 and a second fixed shaft 5123 respectively fixed on both sides of the eccentric plate 5121; wherein the axes of the first fixed shaft 5122 and the second fixed shaft 5123 are arranged offset from each other, the first fixed shaft 5122 is fixedly connected to the fixed shaft 42, and the second fixed shaft 5123 is rotatably connected to the second moving disk 212;

[0048] The eccentric rotating shaft 511 includes a wheel plate 5111 and a first rotating shaft 5112 and a second rotating shaft 5113 respectively rotatably arranged on both sides of the wheel plate 5111; the axes of the first rotating shaft 5112 and the second rotating shaft 5113 are arranged offset from each other; wherein the first moving disk 211 is rotatably connected to the first rotating shaft 5112 through a bearing, and the second moving disk 212 and the loading disk 31 are respectively rotatably connected to the second rotating shaft 5113 through a bearing;

[0049] When the transfer rack 2 rotates, the fixing action of the eccentric fixed shaft 512 forces the eccentric rotating shaft 511 to drive the loading disk 31 to rotate in the reverse direction, offsetting the influence of the revolution of the transfer rack 2 and keeping the direction of the tray 32 of the buffer module 3 constant.

[0050] Please refer to Figure 2 , a photoelectric sensor 7 is bolted to the fixing plate 1, and an induction piece 8 cooperating with the photoelectric sensor 7 is installed on the edge of the deceleration turntable 43; when the induction piece 8 rotates with the deceleration turntable 43 to the detection area of the sensor 7, the system determines that the transfer rack 2 reaches the preset working position, controls the transfer driving member 41 to stop or switch the motion state, and realizes precise positioning.

[0051] Embodiment 2

[0052] Please refer to Figures 6 to 10 , the transfer rack 2 includes rotating arms 221 having the same number as the buffer modules 3. In this embodiment, three rotating arms 221 are provided, and a buffer module 3 is installed on each rotating arm 221; a rotating shaft 6 is rotatably arranged on the rotating arm 221, and the rotating shaft 6 is bolted to the bottom of the loading tray.

[0053] The slewing assembly 5 includes synchronous belt mechanisms having the same number as the buffer modules 3; in this embodiment, three synchronous belt mechanisms are provided and are respectively connected to the three buffer modules 3;

[0054] The synchronous belt mechanism includes a first pulley 521 fixed on the fixed shaft 42, a second pulley 522 fixed on the rotating shaft 6, and a synchronous belt 523 sleeved on the first pulley 521 and the second pulley 522;

[0055] When the transfer drive assembly 4 drives the transfer rack 2 to rotate, the fixed shaft 42 remains stationary, and the synchronous belt mechanism converts the stationary state of the fixed shaft 42 into the reverse self-rotation of the rotating shaft 6, causing the loading tray 31 and the trays 32 thereon to reverse-rotate while the transfer rack 2 revolves, ensuring that the orientation of the buffer module 3 remains unchanged all the time.

[0056] Description of the working process

[0057] Initial state: The three buffer modules 3 rotate between the loading station, the centrifugation station, and the unloading station respectively;

[0058] Rotation of the transfer rack 2: The transfer drive 41 is started, and drives the reduction turntable 43 and the transfer rack 2 to rotate through the reduction gear set 44;

[0059] Reverse self-rotation of the buffer module 3: The synchronous belt mechanism or the eccentric rotating shaft 511 forces the loading tray 31 to reverse-rotate, and the self-rotation angle is equal to and in the opposite direction of the revolution angle, ensuring that the orientation of the tray 32 remains unchanged;

[0060] Continuous operation: The manipulator sequentially places the sample tubes into the buffer module 3 at the loading station. After the transfer rack 2 rotates, the buffer module 3 full of sample tubes enters the centrifugation station. Then the manipulator places the sample tubes into the centrifuge for centrifugation. The sample tubes after centrifugation are transferred by the manipulator again into the empty buffer module 3 at the centrifugation station. After the transfer rack 2 rotates again, the buffer module 3 after centrifugation is transferred to the unloading station, and then is grabbed by another manipulator to the opening module; after the grabbing is completed, the buffer module 3 can continue to rotate 120°, and the empty buffer module 3 can be loaded with samples again.

[0061] In summary, through the coordinated action of the rotation of the transfer rack 2 and the self-rotation of the buffer module 3, the present invention realizes the continuous flow of sample tubes at multiple stations, reduces the grasping path and positioning complexity of the manipulator, significantly improves the centrifugation processing efficiency, and saves the equipment space at the same time.

[0062] The above embodiments are only illustrative of the principles and effects of the present invention, and are not used to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A centrifugal commutation device, characterized in that: It includes a transfer rack (2), several buffer modules (3) rotatably arranged on the transfer rack (2) and used for buffering sample tubes, a rotary assembly (5) arranged between the transfer rack (2) and the buffer module (3) and used for driving the buffer module (3) to rotate, and a transfer driving assembly (4) used for driving the transfer rack (2) to rotate; While the transfer driving assembly (4) drives the transfer rack (2) and drives the buffer module (3) to rotate synchronously, the rotary assembly (5) drives the buffer module (3) to rotate in the reverse direction so that the buffer module (3) always maintains a constant direction; It further includes a fixing plate (1); the transfer driving assembly (4) includes a transfer driving member (41) fixed on the fixing plate (1), a fixed shaft (42) fixedly installed on the fixing plate (1), a reduction turntable (43) rotatably connected to the fixed shaft (42), and a reduction gear set (44) connecting the transfer driving member (41) and the reduction turntable (43); The buffer module (3) includes a loading tray (31) and a pallet (32) installed on the loading tray (31); The transfer rack (2) includes a first moving disk (211) and a second moving disk (212), the first moving disk (211) and the second moving disk (212) are arranged parallel to each other up and down, and the first moving disk (211) is fixedly connected to the reduction turntable (43); The rotary assembly (5) includes eccentric rotating shafts (511) with the same number as the buffer module (3) and arranged between the first moving disk (211) and the second moving disk (212), and an eccentric fixed shaft (512) with one end fixedly connected to the fixed shaft (42) and the other end rotatably connected to the second moving disk (212); The first moving disk (211) is rotatably connected to one end of the eccentric rotating shaft (511), and the second moving disk (212) and the loading tray (31) are rotatably connected to the other end of the eccentric rotating shaft (511).

2. The centrifugal commutation device according to claim 1, characterized in that: The eccentric fixed shaft (512) is rotatably connected to the center of the second moving disk (212).

3. The centrifugal commutation device according to claim 2, characterized in that: The eccentric fixed shaft (512) includes an eccentric plate (5121) and a first fixed shaft (5122) and a second fixed shaft (5123) respectively fixed on both sides of the eccentric plate (5121); The axes of the first fixed shaft (5122) and the second fixed shaft (5123) are arranged offset from each other.

4. The centrifugal commutation device according to claim 1, characterized in that: The eccentric rotating shaft (511) includes a wheel plate (5111) and a first rotating shaft (5112) and a second rotating shaft (5113) respectively rotatably arranged on both sides of the wheel plate (5111); The axes of the first rotating shaft (5112) and the second rotating shaft (5113) are arranged offset from each other.

5. The centrifugal commutation device according to claim 1, characterized in that: Rotating shafts (6) with the same number as the buffer module (3) are rotatably arranged on the transfer rack (2), and the rotating shafts (6) are fixedly connected to the transfer disk.

6. The centrifugal commutation device according to claim 5, characterized in that: The rotary assembly (5) includes synchronous belt mechanisms with the same number as the buffer module (3); The synchronous belt mechanism includes a first belt pulley (521) fixed on the fixed shaft (42), a second belt pulley (522) fixed on the rotating shaft (6), and a synchronous belt (523) sleeved on the first belt pulley (521) and the second belt pulley (522).

7. The centrifugal commutation device according to claim 1, characterized in that: A sensor (7) is fixedly arranged on the fixing plate (1), and an induction piece (8) cooperating with the sensor (7) is arranged on the deceleration turntable (43).

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