Drip-proof mechanism and execution device

Abstract

The application discloses a kind of anti-dripping mechanism and executing device, for cooperating with the executing mechanism of executing device, the executing mechanism can be moved to first position, the anti-dripping mechanism includes rack and the rod portion of rotation connection with the rack, the rod portion is connected with liquid receiving portion, and the liquid receiving portion has liquid receiving position;The anti-dripping mechanism is arranged as follows: in the process that the executing mechanism moves to the first position, the rod portion can be driven to rotate to drive the liquid receiving portion to be located at the liquid receiving position.By executing mechanism provides driving force for anti-dripping mechanism, so that the liquid receiving portion of anti-dripping mechanism can be moved to liquid receiving position.In the executing mechanism moves to the first position, liquid receiving portion receives the drips of executing mechanism in liquid receiving position.

Description

Technical Field

[0001] This application relates to the field of sample pretreatment equipment technology, specifically to an anti-drip mechanism and an actuator. Background Technology

[0002] In many operational steps of sample pretreatment equipment, such as the capping and pipetting steps, dripping can occur. To prevent dripping from contaminating the equipment, anti-drip mechanisms are usually installed in the corresponding locations.

[0003] Traditional anti-drip mechanisms typically include at least one motor, multiple sensors, and a motor driver. Furthermore, an electronic control system is required to collect signals, process data, and generate commands.

[0004] However, this approach results in traditional anti-drip structures being heavy and costly, and the sensors failing to function properly in acidic, alkaline, or humid environments, thus affecting the liquid-receiving effect of the anti-drip mechanism.

[0005] In view of this, there is an urgent need to provide a solution that can at least avoid one of the many drawbacks of traditional anti-drip mechanisms. Summary of the Invention

[0006] This application provides a new technical solution for an anti-drip mechanism and an actuator. By setting the anti-drip mechanism as a mechanical structure, it is possible to avoid many drawbacks of traditional anti-drip mechanisms.

[0007] This application provides an anti-drip mechanism for cooperating with an actuator of an actuator, the actuator being movable to a first position. The anti-drip mechanism includes a frame and a rod rotatably connected to the frame. The rod is connected to a liquid-receiving part, which has a liquid-receiving position. The anti-drip mechanism is configured such that, during the process of the actuator moving to the first position, it can drive the rod to rotate so that the liquid-receiving part is positioned at the liquid-receiving position.

[0008] The technical solution of this application provides a driving force to the anti-drip mechanism through the actuator of the actuator, thereby enabling the anti-drip mechanism to move to the liquid-receiving position. When the actuator is in the first position, a droplet will form on the side where the actuator is located. At this time, the anti-drip mechanism is positioned at the liquid-receiving position to collect the liquid. Since the anti-drip mechanism is driven by the actuator, the motor, sensor, and electronic control system of traditional anti-drip mechanisms can be eliminated, thus simplifying the composition of the anti-drip mechanism. It also avoids the problem of poor liquid-receiving effect caused by the malfunction of the sensor in traditional anti-drip mechanisms.

[0009] Optionally, the anti-drip mechanism further includes an elastic element connected to the frame, and the liquid-receiving portion also has a clearance position. In the liquid-receiving position, the liquid-receiving portion is located below the actuator, and in the clearance position, the liquid-receiving portion is located to the side of the actuator, distinct from the liquid-receiving position. The anti-drip mechanism is configured such that when the liquid-receiving portion is in the liquid-receiving position, the elastic element is in a deformed state to store energy; when the actuator moves to leave the first position, the elastic element resets to drive the rod portion to reset, thereby moving the liquid-receiving portion to the clearance position, and the liquid-receiving portion avoids the movement path of the actuator.

[0010] Optionally, the rod is provided with a mating part that can cooperate with the actuator. When the actuator moves to the first position, it can abut against the mating part to push the rod to rotate.

[0011] Optionally, the mating part is provided with a guide slope, which slides in conjunction with the actuator.

[0012] Optionally, it also includes an anti-rotation part. When the liquid-receiving part is in the avoidance position, the elastic member applies an elastic force to the rod part, and the mating part and the anti-rotation part form an anti-rotation fit.

[0013] Optionally, the frame includes a first support rod and a second support rod, the first support rod and the second support rod are perpendicular to each other, and the rod portion is connected to the second support rod; The first support rod extends in the direction of movement of the actuator. When the liquid receiving part is in the avoidance position, the end of the first support rod away from the second support rod protrudes from the actuator. The end of the first support rod protruding from the actuator is the anti-rotation part.

[0014] Optionally, the rod has two ends, the liquid receiving part is disposed at one end of the rod, the mating part is disposed at the other end of the rod, the mating part and the liquid receiving part both extend toward the direction close to the actuator, and the position where the rod is rotatably connected to the frame is located at the middle position between the two ends of the rod.

[0015] Optionally, the liquid receiving part includes a tray and a liquid receiving box, the tray being vertically connected to the rod, and the liquid receiving box being detachably connected to the tray.

[0016] This application also provides an execution device, characterized in that it includes an execution mechanism and an anti-drip mechanism, wherein when the execution mechanism moves to a first position, the anti-drip mechanism is located in a liquid receiving position, and when the execution mechanism moves away from the first position, the anti-drip mechanism is located in a clearance position.

[0017] Optionally, the actuator includes a cap-opening mechanism, and the liquid receiving position is located below the cap-opening gripper of the cap-opening mechanism; or, the actuator includes a pipetting mechanism, and the liquid receiving position is located below the pipette of the pipetting mechanism.

[0018] Optionally, the opening jaws are used to grip the part to be gripped, and the surface of the opening jaws that contacts the part to be gripped has a threaded structure.

[0019] Other features and advantages of this specification will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of this specification and, together with their description, serve to explain the principles of this specification.

[0021] Figure 1 This is a schematic diagram of the opening assembly in an embodiment of this application, wherein the anti-drip mechanism is located in an avoidance position; Figure 2 This is a schematic diagram of the opening assembly in an embodiment of this application, wherein the anti-drip mechanism is located at the liquid receiving position; Figure 3 This is a partial enlarged schematic diagram of the execution mechanism of the execution device in the embodiments of this application.

[0022] 1. Anti-drip mechanism 11 racks 111 First support rod 112 Second support rod 12 Elastic components 13. Bar section 131 Wetted part 132 Coordination Department 132a Guide sloping surface 2. Actuating device 21. Implementing agencies 211 Lid Opening Grippers Detailed Implementation

[0023] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] In some embodiments of this application, an anti-drip mechanism 1 and an actuator including the anti-drip mechanism are provided. The actuator 2 is a sample pretreatment device, but can also be other automated devices. The actuator 2 further includes an actuator 21. The actuator 21 is movable to a first position. When the actuator 21 is in the first position, a droplet is formed on the side where the actuator 21 is located. The actuator 21 includes devices capable of generating droplets, such as a cap-opening device and / or a pipetting device in the sample pretreatment device.

[0025] The specific structure of the anti-drip mechanism 1 is described below. For example... Figure 1 As shown, the anti-drip mechanism 1 includes a frame 11 and a rod 13 rotatably connected to the frame 11. The rod 13 is provided with a liquid receiving part 131. The liquid receiving part 131 is a device for collecting drips from one side of the actuator 21. The liquid receiving part 131 has a liquid receiving position.

[0026] When the actuator 21 moves to the first position, it can drive the rod 13 to rotate, thereby positioning the liquid receiving part 131 in the liquid receiving position. The liquid receiving part 131 is opposite to the actuator 21 in the direction of liquid dripping, and is located below the actuator 21 in the direction of liquid dripping. That is, the projection range of the liquid receiving part 131 in the direction of liquid dripping covers the area of ​​liquid dripping. At this time, the liquid can fall into the liquid receiving part 131 under the action of gravity.

[0027] In the embodiments of this application, the rod 13 of the anti-drip mechanism 1 can rotate relative to the frame 11 under the drive of the actuator 21, thereby moving the liquid receiving part 131 provided on the rod 13 to the dripping position to collect the dripping liquid. Since the anti-drip mechanism 1 is driven by the actuator 21, the motor, sensor, and electronic control system of the traditional anti-drip mechanism can be eliminated, thus simplifying the composition of the anti-drip mechanism and avoiding the problem of poor liquid receiving effect caused by the malfunction of the sensor in the traditional anti-drip mechanism.

[0028] In some other embodiments of this application, the liquid receiving portion 131 also has a clearance position. In the liquid receiving position, the liquid receiving portion 131 is located below the actuator 21, and in the clearance position, the liquid receiving portion 131 is located to the side of the actuator 21 that is different from the liquid receiving position.

[0029] The anti-drip mechanism 1 also includes an elastic element 12 connected to the frame 11. The anti-drip mechanism 1 is configured such that when the liquid receiving portion 131 is in the liquid receiving position, the elastic element 12 is in a deformed state under the action of the rod portion 13 to store energy.

[0030] When the actuator 21 moves away from the first position, the elastic element 12 resets to drive the lever 13 to reset, thereby moving the liquid-receiving part 131 to a clearance position, whereby the liquid-receiving part 131 avoids the movement path of the actuator 21. This prevents the liquid-receiving part 131 from interfering with the movement of the actuator 21. The movement path of the actuator 21 refers to the route taken by the actuator 21 from the first position to other working positions.

[0031] The driving component that drives the liquid receiving part 131 to reset to the avoidance position can also be a drive motor. However, using the elastic element 12 to drive the liquid receiving part 131 to move to the avoidance position can avoid introducing other electronic control components and sensing components, thereby simplifying the structure of the anti-drip mechanism and reducing the cost of the anti-drip mechanism.

[0032] Optionally, the liquid receiving part 131 includes a tray and a liquid receiving box, the tray being vertically connected to the rod part 13, and the liquid receiving box being detachably connected to the tray.

[0033] Alternatively, a groove can be directly formed on the surface of the tray, with the groove facing the actuator 21 in the direction of the dripping liquid to collect the dripping liquid. In this case, the tray and the rod 13 are detachably connected. Thus, when the liquid receiving section 131 reaches the rated liquid receiving capacity, the tray or the liquid receiving box can be replaced.

[0034] In some specific embodiments, such as Figure 1 and Figure 2 As shown, the lever 13 is provided with a mating part 132 that can cooperate with the actuator 21. When the actuator 21 moves to the first position, it can resist the mating part 132 to push the lever 13 to rotate.

[0035] Optionally, the mating part 132 is provided with a guide slope, which slides in conjunction with the actuator 21. This allows the rod 13 to rotate smoothly, reducing or avoiding jamming during rotation.

[0036] Specifically, at least a portion of the mating part 132 is connected to the rod part 13, and the vertical height of the guide slope 132a gradually increases from the side closer to the rod part 13 toward the side closer to the actuator 21. Those skilled in the art can set parameters such as the angle of the guide slope 132a according to the rotation direction of the rod part 13 and the specific liquid contact position.

[0037] like Figure 2 As shown, when the actuator 21 moves upward, it comes into contact with the guide ramp 132a. As the actuator 21 continues to move upward, it slides along the guide ramp 132a. Since the rod 13 is rotatably connected to the frame 11, when the guide ramp 132a is subjected to the force of the actuator 21, the rod 13 will rotate synchronously with the frame 11 in the first direction relative to the frame 11 as the actuator 21 moves.

[0038] During the rotation of the lever 13, it comes into contact with the elastic element 12 and gradually compresses the elastic element 12. Under the obstruction of the elastic element 12, the lever 13 moves along with the movement of the actuator 21.

[0039] In this way, as the actuator 21 moves toward the first position, the position of the actuator 21 and the position of the liquid receiving part 131 are in a one-to-one correspondence, which can accurately ensure that when the actuator 21 is in the first position, the liquid receiving part 131 is in the corresponding liquid receiving position.

[0040] Furthermore, when the liquid receiving portion 131 moves from the liquid receiving position to the avoidance position, the rod portion 13 rotates in the opposite direction of the first direction. At this time, in order to prevent the rod portion 13 from rotating excessively under the action of the elastic member 12 and spilling the dripping liquid in the liquid receiving portion 131.

[0041] The anti-drip mechanism 1 also includes an anti-rotation part. The anti-rotation part is located on the front side of the rod 13 in the direction of rotation. The anti-rotation part is used to form an anti-rotation engagement with the mating part 132 at a set position to prevent the rod 13 from over-rotating. At this time, the elastic member 12 still applies elastic force to the rod 13. Thus, under the action of the elastic member 12, the rod 13 is held in the position where it is engaged with the anti-rotation part.

[0042] Optionally, the end of the frame 11 serves as an anti-rotation part, and the mating part 132 forms a stop fit with the end of the frame 11.

[0043] Specifically, the frame 11 includes a first support rod 111 and a second support rod 112, the first support rod 111 and the second support rod 112 are perpendicular to each other, and the rod part 13 is rotatably connected to the second support rod 112.

[0044] See Figure 1 The first support rod 111 is located on the side where the actuator 21 is located and extends in the direction of movement of the actuator 21. When the actuator 21 moves away from the first position, the end of the first support rod 111 away from the second support rod 112 protrudes from the actuator 21 to form an anti-rotation engagement with the mating part 132.

[0045] See also Figure 1 and Figure 2 The first support rod 111 extends vertically. When the actuator 21 is in the second position, the top of the first support rod 111 is higher than the actuator 21 in the vertical direction. When the actuator 21 is in the first position, at least a portion of the actuator 21 is higher than the top of the first support rod 111, thereby enabling the mating part 132 to be pushed up to disengage from the stop engagement with the top of the first support rod 111.

[0046] In the above embodiment, to reduce the structural size of the anti-drip mechanism 1, the rod 13 has two ends, with a liquid-receiving part 131 disposed at one end and a mating part 132 disposed at the other end. The two ends of the rod 13 are rotatably connected to the end of the second support rod 112 away from the first support rod 111 via a pivot. The elastic member 12 applies driving force near the connection point between the second support rod 112 and the rod 13. This arrangement effectively reduces the structural size of the anti-drip mechanism 1.

[0047] In some embodiments of this application, an execution device is also provided, which includes an execution mechanism 21 and the aforementioned anti-drip mechanism 1. When the execution mechanism 21 moves to the first position, the anti-drip mechanism 1 is in the liquid-receiving position.

[0048] In an optional embodiment, when the actuator 21 moves away from the first position, the anti-drip mechanism is in a clearance position. Thus, the anti-drip mechanism 1 is used to catch drips from one side of the actuator 21.

[0049] Optionally, the actuator 21 may include a cap opening mechanism or a pipetting mechanism, with the liquid receiving position located below the cap opening gripper 211 of the cap opening mechanism or below the pipette of the pipetting mechanism.

[0050] Specifically, the opening mechanism includes an opening gripper 211, which is used to grip the part to be gripped. The surface of the opening gripper 211 that contacts the part to be gripped has a threaded structure. This increases the friction between the surface of the opening gripper 211 and the part to be gripped.

[0051] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A drip-proof mechanism for cooperating with an actuator (21) of an actuator (2), said actuator (21) being movable to a first position, characterized in that, The anti-drip mechanism (1) includes a frame (11) and a rod (13) rotatably connected to the frame (11). The rod (13) is connected to a liquid-receiving part (131), which has a liquid-receiving position. The anti-drip mechanism (1) is configured such that, during the process of the actuator (21) moving to the first position, the actuator (21) can drive the rod (13) to rotate so that the liquid-receiving part (131) is located at the liquid-receiving position. The rod (13) is provided with a mating part (132) that can cooperate with the actuator (21). The mating part (132) forms a stop fit with the top end of the frame (11). When the actuator (21) is in the first position, at least a portion of the actuator (21) is higher than the top end of the frame (11) so as to push the mating part (132) upward to release the stop fit with the top end of the frame (11). The mating part (132) is provided with a guide slope (132a), which slides with the actuator (21); the height of the guide slope (132a) in the vertical direction gradually increases from the side closer to the rod (13) toward the side closer to the actuator (21); The anti-drip mechanism (1) further includes an elastic element (12) connected to the frame (11). The liquid receiving part (131) also has a clearance position. When the liquid receiving part (131) is in the liquid receiving position, the elastic element (12) is in a deformed state to store energy. When the actuator (21) moves away from the first position, the elastic element (12) resets to drive the rod (13) to reset to drive the liquid receiving part (131) to be in the clearance position, and the liquid receiving part (131) avoids the movement path of the actuator (21).

2. The anti-drip mechanism according to claim 1, characterized in that, In the liquid-receiving position, the liquid-receiving part (131) is located on the lower side of the actuator (21), and in the avoidance position, the liquid-receiving part (131) is located on the side of the actuator (21) that is different from the liquid-receiving position.

3. The anti-drip mechanism according to claim 2, characterized in that, It also includes an anti-rotation part. When the liquid receiving part (131) is in the avoidance position, the elastic member (12) applies an elastic force to the rod part (13), and the mating part (132) forms an anti-rotation fit with the anti-rotation part.

4. The anti-drip mechanism according to claim 3, characterized in that, The frame (11) includes a first support rod (111) and a second support rod (112), the first support rod (111) and the second support rod (112) are perpendicular to each other, and the rod part (13) is connected to the second support rod (112); The first support rod (111) extends in the direction of movement of the actuator (21). When the liquid receiving part (131) is in the avoidance position, the end of the first support rod (111) away from the second support rod (112) protrudes from the actuator (21). The end of the first support rod (111) protruding from the actuator (21) is the anti-rotation part.

5. The anti-drip mechanism according to claim 1, characterized in that, The rod (13) has two ends. The liquid receiving part (131) is disposed at one end of the rod (13), and the mating part (132) is disposed at the other end of the rod (13). Both the mating part (132) and the liquid receiving part (131) extend toward the actuator (21). The position where the rod (13) is rotatably connected to the frame (11) is located at the middle position between the two ends of the rod (13).

6. The anti-drip mechanism according to any one of claims 1-5, characterized in that, The liquid receiving part (131) includes a tray and a liquid receiving box. The tray is vertically connected to the rod (13), and the liquid receiving box is detachably connected to the tray.

7. An actuator, characterized in that, Includes an actuator (21) and an anti-drip mechanism as described in any one of claims 1-6, wherein when the actuator (21) moves to the first position, the anti-drip mechanism (1) is in the liquid receiving position.

8. The actuator according to claim 7, characterized in that, The actuator (21) includes a cap-opening mechanism, and the liquid receiving position is located below the cap-opening gripper (211) of the cap-opening mechanism; or, the actuator (21) includes a pipetting mechanism, and the liquid receiving position is located below the pipette of the pipetting mechanism.

9. The actuator according to claim 8, characterized in that, The opening jaw (211) is used to grip the part to be gripped, and the surface of the opening jaw (211) that contacts the part to be gripped has a threaded structure.

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