Centrifugal transposition device

Abstract

The invention provides a centrifugal transposition device which is applied to the technical field of sample centrifugal treatment equipment. According to the technical scheme, the device is characterized by comprising a transfer frame, a plurality of caching modules rotationally arranged on the transfer frame and used for caching sample tubes, a rotating assembly arranged between the transfer frame and the caching modules and used for driving the caching modules to rotate, and a transfer driving assembly used for driving the transfer frame to rotate; while the transfer driving assembly drives the transfer frame and drives the cache module to rotate synchronously, the rotation assembly drives the cache module to rotate reversely so that the cache module can keep the direction unchanged all the time. The method has the technical effects that the sample input and output efficiency is greatly improved, and the centrifugal module is efficiently utilized.

Description

Technical Field

[0001] The invention relates to the technical field of sample centrifugal processing equipment, and in particular to a centrifugal transposition device. Background Art

[0002] Before entering the analytical instrument for detection, the sample is generally pre-processed, and the sample pre-processing includes loading, centrifugation, and uncapping. A tray is provided between the loading, centrifugation, and uncapping modules, and the tray is used to hold the sample tubes. An empty tray is provided between the loading module and the centrifugation module, and the sample tubes on the loading module are placed on the empty tray by grabbing by a robot, so that the sample tubes on the tray can be loaded onto the centrifugation module by the robot later. An empty tray is provided between the centrifugation module and the uncapping module, and the sample tubes that have been centrifuged are placed on the empty tray by grabbing by a robot, so that the sample tubes that have been centrifuged on the tray can be loaded onto the uncapping module by the robot later for uncapping. The centrifugal efficiency of the sample tube depends on the grasping efficiency of the robot (the robot is required to load and unload the centrifugal module before and after centrifugation). In order to improve the centrifugal efficiency, several sets of trays need to be configured between each module so that the robot can grasp continuously; however, configuring several more sets of trays increases the production space and the moving stroke of the robot, which in turn increases the grasping time of the robot, and the centrifugal efficiency is not significantly improved. Summary of the invention

[0003] The object of the present invention is to provide a centrifugal transposition device, which has the advantage of greatly improving the efficiency of sample input and output, and the centrifugal module is efficiently utilized.

[0004] To achieve the above objectives and other related objectives, the present invention provides the following technical solutions: A centrifugal transposition device comprises a transfer rack, a plurality of buffer modules rotatably arranged on the transfer rack and used to buffer sample tubes, a rotating assembly arranged between the transfer rack and the buffer modules and used to drive the buffer modules to rotate, and a transfer drive assembly used to drive the transfer rack to rotate; The transfer drive assembly drives the transfer rack and drives the cache module to rotate synchronously, while the rotation assembly drives the cache module to rotate in the opposite direction so that the cache module always keeps the same direction.

[0005] In one embodiment of the present invention, a fixing plate is further included; The transfer drive assembly includes a transfer drive member fixed on a fixed plate, a fixed shaft fixedly mounted on the fixed plate, a reduction turntable rotatably connected to the fixed shaft, and a reduction gear set connecting the transfer drive member and the reduction turntable.

[0006] In one embodiment of the present invention, the cache module includes a loading tray and a tray installed on the loading tray.

[0007] In one embodiment of the present invention, the transfer rack includes a first moving plate and a second moving plate, the first moving plate and the second moving plate are vertically and parallelly arranged, and the first moving plate is fixedly connected to the deceleration rotating plate; The rotary assembly includes an eccentric rotating shaft having the same number as the buffer modules and arranged between the first movable disk and the second movable disk, and an eccentric fixed shaft having one end fixedly connected to the fixed shaft and the other end rotatably connected to the second movable disk; The first movable plate is rotatably connected to one end of the eccentric rotating shaft, and the second movable plate and the loading plate are rotatably connected to the other end of the eccentric rotating shaft.

[0008] In one embodiment of the present invention, the eccentric fixed shaft is rotatably connected to the center of the second moving disk.

[0009] In one embodiment of the present invention, the transfer rack is rotatably provided with the same number of rotation shafts as the cache modules, and the rotation shafts are fixedly connected to the transfer plate.

[0010] In one embodiment of the present invention, the rotary assembly includes the same number of synchronous belt mechanisms as the buffer modules; The synchronous belt mechanism comprises a first pulley fixed on a fixed shaft, a second pulley fixed on a rotating shaft, and a synchronous belt sleeved on the first pulley and the second pulley.

[0011] In one embodiment of the present invention, the eccentric fixed shaft comprises an eccentric plate and a first fixed shaft and a second fixed shaft respectively fixed on both sides of the eccentric plate; The axes of the first fixed axis and the second fixed axis are staggered.

[0012] In one 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; The axes of the first rotating shaft and the second rotating shaft are staggered.

[0013] In one embodiment of the present invention, a sensor is fixedly mounted on the fixed plate, and an induction sheet cooperating with the sensor is mounted on the deceleration turntable.

[0014] As described above, a centrifugal transposition device of the present invention has the following beneficial effects: 1. The transfer drive assembly drives the transfer rack and drives the buffer module to rotate synchronously. Each buffer module has different functions when it rotates to different positions, which greatly improves the efficiency of sample input and output, and the centrifugal module is efficiently utilized; 2. Through the setting of the rotary component, the direction of the cache module at each position remains unchanged during the transposition, and the relative position of each sample remains unchanged after the position of the cache module is changed; thereby reducing the number of coordinates grasped by the robot and avoiding inaccurate positioning and error-prone problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of Example 1 of the present invention; Figure 2 is a side view of the overall structure of Example 1 of the present invention; Figure 3 is a schematic structural diagram of a transfer drive assembly according to Embodiment 1 of the present invention; Figure 4 is a schematic structural diagram of an eccentric fixed shaft according to Embodiment 1 of the present invention; Figure 5 is a schematic structural diagram of an eccentric rotating shaft according to Embodiment 1 of the present invention; Figure 6 is a schematic diagram of the overall structure of Embodiment 2 of the present invention; Figure 7 is a side view of the overall structure of Example 2 of the present invention; 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; Fig. 9 is a schematic diagram of the connection relationship between the transfer drive assembly and the first pulley of Example 2 of the present invention; Fig.10 It is a schematic diagram of the connection relationship between the first pulley and the fixed shaft in Example 2 of the present invention.

[0016] Figure markings: 1. fixed plate; 2. transfer rack; 3. cache module; 31. loading plate; 32. tray; 4. transfer drive assembly; 41. transfer drive member; 42. fixed shaft; 43. reduction turntable; 44. reduction gear set; 5. rotation 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 pulley; 522. second pulley; 523. synchronous belt; 7. sensor; 8. induction sheet; 221. rotating arm. DETAILED DESCRIPTION

[0017] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0018] See also Figures 1 to 10 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0019] Example 1

[0020] See also Figure 1 and Figure 2 , the present invention provides a centrifugal transposition device, comprising a fixed plate 1, a transfer frame 2, a buffer module 3, a rotary assembly 5 and a transfer drive assembly 4; The buffer modules 3 are used to buffer sample tubes, and a plurality of buffer modules 3 are rotatably arranged on the transfer rack 2; the rotation assembly 5 is arranged between the transfer rack 2 and the buffer modules 3 and is used to drive the buffer modules 3 to rotate; the transfer drive assembly 4 is used to drive the transfer rack 2 to rotate; While the transfer drive component 4 drives the transfer rack 2 and drives the cache module 3 to rotate synchronously, the rotation component 5 drives the cache module 3 to rotate in the opposite direction so that the cache module 3 always maintains the same direction, so that after the position of the cache module 3 is changed, the relative position of each sample remains unchanged; thereby reducing the number of coordinates grasped by the robot arm and avoiding inaccurate positioning and error-prone problems.

[0021] See also 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 to the output shaft of the servo motor, and the large gear is fixed to the outer peripheral side wall of the reduction turntable 43, and the power is transmitted through gear meshing to realize the rotation of the reduction turntable 43.

[0022] See also Figure 1 and Figure 2, multiple cache modules 3 are evenly distributed along the circumference of the transfer rack 2. In this embodiment, three cache modules 3 are provided, and the angle between two adjacent cache modules 3 is 120°. The cache 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 transfer tray, and the four trays 32 are distributed on the transfer tray in a field shape.

[0023] See also Figure 1 and Figure 2 The transfer rack 2 includes a first moving plate 211 and a second moving plate 212 which are arranged in parallel up and down. In this embodiment, the first moving plate 211 and the second moving plate 212 are equilateral triangle structures; the first moving plate 211 is bolted to the top of the deceleration rotating plate 43 and rotates synchronously with it; wherein the fixed shaft 42 passes through the middle of the first moving plate 211; The rotary assembly 5 includes the same number as the buffer module 3 and the eccentric rotating shafts 511 disposed between the first movable disk 211 and the second movable disk 212, and the eccentric fixed shafts 512 with one end fixedly connected to the fixed shaft 42 and the other end rotatably connected to the second movable disk 212; in this embodiment, three eccentric rotating shafts 511 are disposed between the first movable disk 211 and the second movable disk 212; the three eccentric rotating shafts 511 are respectively disposed at positions near three corners of the first movable disk 211 and the second movable disk 212; See also Figure 4 and Figure 5 , the eccentric fixed shaft 512 is rotatably connected to the center of the second movable 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 staggered, 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 movable disk 212; The eccentric rotating shaft 511 includes a wheel plate 5111 and a first rotating shaft 5112 and a second rotating shaft 5113 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 staggered; wherein the first moving plate 211 is rotatably connected to the first rotating shaft 5112 through a bearing, and the second moving plate 212 and the loading plate 31 are rotatably connected to the second rotating shaft 5113 through bearings respectively; When the transfer rack 2 rotates, the fixing effect of the eccentric fixed shaft 512 forces the eccentric rotating shaft 511 to drive the loading plate 31 to rotate in the opposite direction, thereby offsetting the influence of the revolution of the transfer rack 2 and keeping the direction of the tray 32 of the cache module 3 constant.

[0024] See also Figure 2A photoelectric sensor 7 is bolted to the fixed plate 1, and a sensing sheet 8 cooperating with the photoelectric sensor 7 is installed on the edge of the deceleration turntable 43; when the sensing sheet 8 rotates to the detection area of ​​the sensor 7 along with the deceleration turntable 43, the system determines that the transfer rack 2 has reached the preset position, and controls the transfer drive 41 to stop or switch the movement state to achieve precise positioning.

[0025] Example 2

[0026] See also Figures 6 to 10 The transfer rack 2 includes the same number of rotating arms 221 as the cache modules 3. In this embodiment, three rotating arms 221 are provided, and each of the rotating arms 221 is equipped with a cache module 3; a rotating shaft 6 is rotatably provided on the rotating arm 221, and the rotating shaft 6 is bolted to the bottom of the transfer plate; The rotary assembly 5 includes the same number of synchronous belt mechanisms as the buffer modules 3; in this embodiment, three synchronous belt mechanisms are provided, each of which is connected to the buffer modules 3; 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; 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 rotation of the rotating shaft 6, so that the loading plate 31 and the tray 32 thereon rotate in the reverse direction while the transfer rack 2 revolves, ensuring that the orientation of the cache module 3 remains unchanged.

[0027] Working process description Initial state: the three buffer modules 3 rotate between the loading station, the centrifugal station and the unloading station respectively; The transfer rack 2 rotates: the transfer driving member 41 is started, and drives the reduction turntable 43 and the transfer rack 2 to rotate through the reduction gear set 44; The buffer module 3 rotates in reverse: the synchronous belt mechanism or the eccentric rotating shaft 511 forces the loading tray 31 to rotate in reverse, and the rotation angle is equal to the revolution angle and the direction is opposite, so as to ensure that the orientation of the tray 32 remains unchanged; Continuous operation: The robot puts the sample tubes into the buffer module 3 of the loading station in turn. After the transfer rack 2 rotates, the buffer module 3 loaded with sample tubes enters the centrifugation station. The robot then places the sample tubes in the centrifuge for centrifugation. The centrifuged sample tubes are transferred to the empty buffer module 3 of the centrifugation station by the robot. After the transfer rack 2 rotates again, the centrifuged buffer module 3 is transferred to the unloading station, and then grabbed by another robot to the lid opening module. After the grabbing is completed, the buffer module 3 can continue to rotate 120°, and the empty buffer module 3 can load samples again.

[0028] In summary, the present invention realizes the continuous flow of sample tubes in multiple workstations through the synergistic effect of the rotation of the transfer rack 2 and the self-rotation of the cache module 3, reduces the robot's grasping path and positioning complexity, significantly improves the centrifugal processing efficiency, and saves equipment space.

[0029] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A centrifugal transposition device, characterized in that: It comprises a transfer rack (2), a plurality of buffer modules (3) rotatably arranged on the transfer rack (2) and used for buffering sample tubes, a rotation assembly (5) arranged between the transfer rack (2) and the buffer modules (3) and used for driving the buffer modules (3) to rotate, and a transfer drive assembly (4) used for driving the transfer rack (2) to rotate; The transfer drive assembly (4) drives the transfer rack (2) and drives the cache module (3) to rotate synchronously, while the rotation assembly (5) drives the cache module (3) to rotate in the opposite direction so that the cache module (3) always maintains an unchanged direction.

2. The centrifugal transposition device according to claim 1, characterized in that: Also includes a fixing plate (1); The transfer drive assembly (4) comprises a transfer drive member (41) fixed on the fixed plate (1), a fixed shaft (42) fixedly mounted on the fixed plate (1), a reduction disc (43) rotatably connected to the fixed shaft (42), and a reduction gear set (44) connecting the transfer drive member (41) and the reduction disc (43).

3. The centrifugal transposition device according to claim 2, characterized in that: The cache module (3) comprises a loading tray (31) and a tray (32) mounted on the loading tray (31).

4. The centrifugal transposition device according to claim 3, characterized in that: The transfer frame (2) comprises a first moving disk (211) and a second moving disk (212), wherein the first moving disk (211) and the second moving disk (212) are arranged vertically and parallelly, and the first moving disk (211) is fixedly connected to the deceleration rotating disk (43); The rotary assembly (5) comprises an eccentric rotating shaft (511) having the same number as the buffer modules (3) and arranged between the first moving disk (211) and the second moving disk (212), and an eccentric fixed shaft (512) having one end fixedly connected to the fixed shaft (42) and the other end rotatably connected to the second moving disk (212); The first movable disk (211) is rotatably connected to one end of the eccentric rotating shaft (511), and the second movable disk (212) and the loading disk (31) are rotatably connected to the other end of the eccentric rotating shaft (511).

5. The centrifugal transposition device according to claim 4, characterized in that: The eccentric fixed shaft (512) is rotatably connected to the center of the second moving disk (212).

6. The centrifugal transposition device according to claim 5, characterized in that: The eccentric fixed shaft (512) comprises an eccentric plate (5121) and a first fixed shaft (5122) and a second fixed shaft (5123) respectively fixed on two sides of the eccentric plate (5121); The axes of the first fixed axis (5122) and the second fixed axis (5123) are staggered.

7. The centrifugal transposition device according to claim 4, characterized in that: The eccentric rotating shaft (511) comprises a wheel plate (5111) and a first rotating shaft (5112) and a second rotating shaft (5113) which are rotatably arranged on both sides of the wheel plate (5111) respectively; The axes of the first rotating shaft (5112) and the second rotating shaft (5113) are staggered.

8. The centrifugal transposition device according to claim 3, characterized in that: The transfer rack (2) is rotatably provided with rotating shafts (6) having the same number as the buffer modules (3), and the rotating shafts (6) are fixedly connected to the transfer plate.

9. The centrifugal transposition device according to claim 8, characterized in that: The rotary assembly (5) comprises the same number of synchronous belt mechanisms as the buffer modules (3); The synchronous belt mechanism comprises a first pulley (521) fixed on a fixed shaft (42), a second pulley (522) fixed on a rotating shaft (6), and a synchronous belt (523) sleeved on the first pulley (521) and the second pulley (522).

10. The centrifugal transposition device according to claim 2, characterized in that: A sensor (7) is fixedly arranged on the fixed plate (1), and an induction sheet (8) cooperating with the sensor (7) is arranged on the deceleration rotary disc (43).

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