CN120741876B - Sample unloading device and full-automatic fluorometer - Google Patents

Abstract

This application relates to the field of sample processing and detection, and in particular to a sample unloading device and a fully automated fluorescence analyzer, including a pushing mechanism, a gripping mechanism, and a driving mechanism. The driving mechanism drives the pushing mechanism to reciprocate, and the pushing mechanism acts on the gripping mechanism to continuously grip samples. The gripping mechanism includes a push rod and an angle adjustment component. The push rod is connected to the pushing mechanism through the angle adjustment component and can rotate to extend or retract. When the push rod extends into the unloading platform, it engages with the bottom of the sample. This structure simplifies the sample unloading device structure, ensures efficient operation even with a miniaturized design, reduces costs, further improves unloading efficiency, and meets the requirements for high-efficiency detection.

Description

Sample unloading device and full-automatic fluorometer

Technical Field

The application relates to the field of sample processing and detection, in particular to a sample unloading device and a full-automatic fluorometer.

Background

In the field of biological sample detection, the automation level of in vitro quantitative detection instruments is continuously improved. The automatic in-vitro diagnosis device plays a vital role in modern medical detection, can rapidly and accurately detect and analyze biological samples, and provides powerful support for diagnosis and treatment of diseases. The detection efficiency and the space utilization rate directly determine the timeliness and the resource cost of clinical diagnosis. The sample detection and identification and sample unloading are used as key links of the device, the efficiency of the device not only affects the single sample processing time, but also determines whether the device can realize efficient operation under the miniaturized design. At present, the commonly adopted technical means for unloading samples mainly comprises the step of driving a vertical lifting mechanism and a horizontal translation mechanism to cooperatively complete the work of unloading the samples through a double-power driving module. The vertical lifting mechanism generally adopts a motor to drive a screw rod or a synchronous belt, firstly drives the pushing component to move up and down, adjusts the height of the pushing component to be abutted against a sample, and pushes the sample placed in a detection completion area in the sample detection platform to the horizontal translation mechanism. The horizontal translation mechanism drives the synchronous belt or the gear rack through the motor, so that the pushing component moves to an unloading area of the detection platform from the feeding end to the discharging end of the horizontal translation mechanism, the unloading action of a single sample is completed, and then the pushing component resets to the feeding end of the horizontal translation mechanism to push the next sample. In addition, there are manufacturers who purposely customize manipulators for gripping and transferring samples to the unloading zone. The existing sample unloading mode has obvious defects. On the one hand, the sample unloading structure is complex, both the lifting and translating mechanism and the manipulator are driven by the double independent motors, the hardware cost and the complexity of a control algorithm are increased, and the fault maintenance cost is higher. On the other hand, the sample unloading process needs four steps of 'descending-translation-ascending-translation', double power switching needs time buffering, single sample unloading period time is prolonged, working efficiency is low, and increasing high-efficiency detection requirements cannot be met. Meanwhile, for a test tube rack with larger volume in some biochemical analyzers, the lifting range of the conventional vertical lifting mechanism for unloading samples is limited, and a large-scale avoidance cannot be realized.

Disclosure of Invention

In order to simplify the structure of a sample unloading device, ensure that efficient operation can be realized under a miniaturized design, reduce cost and further improve unloading efficiency, and meet the requirement of efficient detection, the application provides the sample unloading device and a full-automatic fluorescent instrument.

In a first aspect, the application provides a sample unloading device, which comprises a pushing mechanism, a material grabbing mechanism and a driving mechanism, wherein the driving mechanism drives the pushing mechanism to reciprocate, the pushing mechanism acts on the material grabbing mechanism to grab samples continuously, the material grabbing mechanism comprises a push rod and an angle adjusting assembly, the push rod is connected with the pushing mechanism through the angle adjusting assembly and can extend into or retract out of the pushing mechanism in a rotating mode, and when the push rod extends into an unloading platform, the push rod rotates to be in a vertical state and is clamped with the bottom of the samples. By adopting the technical scheme, the driving mechanism drives the pushing mechanism to reciprocate, and the pushing mechanism acts on the grabbing mechanism, so that a push rod in the grabbing mechanism can be connected with the pushing mechanism through the angle adjusting assembly and rotate. In the sample unloading process, when the push rod rotates to extend into the unloading platform, the push rod can be clamped with the bottom of the sample, and the grabbing action of the sample is realized. The pushing mechanism can reciprocate and the pushing rod can rotate, the pushing rod can grasp or separate from the sample freely, and the grabbing mechanism can grab the sample continuously along with the movement of the pushing mechanism;

Specifically, the original position of the push rod is in a non-vertical inclined state, the inclination angle is designed to form a avoidance position with the discharging platform, when the driving mechanism drives the pushing mechanism to move forwards along the initial position, the push rod rotates to be clamped with a sample in a vertical state, in the process of rotating the push rod, the push rod and the discharging platform can avoid the avoidance position to ensure that the push rod can extend into the discharging platform to be clamped with the sample, the push rod is driven to completely discharge the sample onto the discharging platform along with the fact that the pushing mechanism continues to move forwards to the final position, the pushing mechanism is driven to move backwards in a reverse direction, the push rod rotates along an original path to return to the inclined state to enable the push rod to be separated from the sample, and then the push rod returns to the original starting position of the pushing mechanism along with the continuing backward direction, so that the push rod is prepared for discharging of the next sample. Compared with the prior dual-power driving module driving mode that the vertical lifting mechanism and the horizontal translation mechanism cooperatively finish the sample unloading work, the device avoids a complex lifting and translation structure, reduces hardware cost and control algorithm complexity, and reduces fault maintenance cost. Meanwhile, the time buffering required by the existing descending-translation-ascending-translation four-step unloading process and double-power switching is avoided, the single sample unloading cycle time is shortened, the working efficiency of the sample unloading process is effectively improved, the increasing high-efficiency detection requirement can be met, in addition, the samples do not need to be moved in the vertical direction, and the stability of the samples during unloading is further improved. Preferably, the angle adjusting assembly comprises a connecting rod, a push-pull member and a damping member, wherein the connecting rod is respectively connected with the middle part of the push rod and the push-pull member in a rotating way, the push-pull member is connected with the output end of the pushing mechanism, the damping member is slidably arranged, the bottom of the push rod is connected with the damping member, and when the pushing mechanism acts, the push rod can be driven to rotate through linkage fit between the push-pull member, the connecting rod and the damping member. Through adopting above-mentioned technical scheme, actuating mechanism drive pushing mechanism action, pushing mechanism's output drives push-and-pull piece and removes, because the connecting rod rotates with push rod middle part and push-and-pull piece respectively to be connected, and the push rod bottom is connected with the damping piece that slidable set up, like this when the push-and-pull piece removes, through the linkage cooperation between push-and-pull piece, connecting rod and the damping piece, can drive the push rod and rotate. The design enables the push rod to extend into or retract out of the unloading platform in a rotatable manner, when the push rod extends into the unloading platform, the push rod can be clamped with the bottom of a sample to grasp the sample, the problems of complex structure, high cost and low working efficiency caused by the fact that the traditional double-power driving module drives the vertical lifting mechanism and the horizontal translation mechanism to work cooperatively are avoided, the action steps of unloading the sample are simplified, the single sample unloading cycle time is shortened, the working efficiency of the sample unloading process is improved, and meanwhile the problem that the existing sample unloading vertical lifting mechanism cannot realize large-range avoidance due to limited lifting range is also solved. Preferably, the pushing mechanism comprises a pushing piece and a sliding piece, the pushing piece is connected with the sliding piece, the driving mechanism drives the pushing piece to reciprocate, and the pushing piece is fixedly connected with the pushing piece. through adopting above-mentioned technical scheme, actuating mechanism can drive the propelling movement piece and carry out reciprocating motion, because the propelling movement piece is connected with the slider, the slider can play direction and supporting role to the removal of propelling movement piece, makes the removal of propelling movement piece more stable. Because the pushing piece is fixedly connected with the pushing piece, the pushing piece can drive the pushing piece to synchronously move in the reciprocating movement process, the movement of the pushing piece is further matched with the movement of the angle adjusting component, the pushing rod is driven to rotate, the pushing rod stretches into or contracts out of the unloading platform to grab samples, the function of grabbing samples continuously is achieved, the working efficiency of sample unloading is effectively improved, the structure is simpler than that of the prior art, the hardware cost and the control algorithm complexity are reduced, and the fault maintenance cost is reduced. Preferably, the sliding part comprises a sliding rail and a sliding block, the sliding rail is arranged on the driving mechanism, the sliding block is arranged on the sliding rail in a sliding manner, and the pushing part is connected with the sliding block. Through adopting above-mentioned technical scheme, the slide rail sets up in actuating mechanism, and the slider slides and sets up in the slide rail, and the propelling movement piece is connected with the slider, and like this when actuating mechanism drive propelling movement piece removed, the slider can slide on the slide rail. The slide rail provides a stable sliding path for the slide block, ensures the linearity and stability of the movement of the slide block, and further enables the pushing piece connected with the slide block to perform reciprocating movement smoothly. The steady movement of the pushing piece is beneficial to acting on the grabbing mechanism, so that the grabbing mechanism can grab samples more accurately and stably, and the situation that the grabbing mechanism fails to grab samples or the grabbing position is inaccurate due to the fact that the pushing piece is unstable in movement is avoided, and the efficiency and the reliability of grabbing samples by the sample unloading device are improved. Preferably, the damping piece is slidably disposed on the sliding rail. Through adopting above-mentioned technical scheme, set up the damping piece slip in the slide rail for when actuating mechanism drive pushing mechanism reciprocating motion, pushing mechanism drives angle adjusting component action, because the damping piece slidable on the slide rail, can cooperate the linkage of each part in the angle adjusting component better. When the pushing mechanism acts and drives the push rod to rotate through the push-pull piece and the connecting rod, the damping piece slides to provide stable support and guide for the rotation of the push rod, so that the push rod can accurately rotate to extend into or retract out of the discharging platform to be clamped with the bottom of the sample, and the function of continuously grabbing the sample is realized. Meanwhile, the setting can enable the grabbing mechanism to be more stable in the working process, shaking and offset are reduced, the accuracy and reliability of grabbing are improved, and further the working efficiency and stability of the sample unloading device are improved. Preferably, the grabbing mechanism further comprises a locking assembly, the locking assembly comprises an abutting piece, the abutting piece is located between the pushing piece and the connecting rod, the abutting piece is rotationally connected with the bottom of the push rod, the bottom of the abutting piece is connected with the damping piece, the bottom of the connecting rod is rotationally connected with the abutting piece, and when the bottom of the connecting rod is rotationally connected with the abutting piece, the push rod is rotated to be in a vertical state. By adopting the technical scheme, when the sample unloading device works, the driving mechanism drives the pushing mechanism to act, the output end of the pushing mechanism drives the push-pull piece to move, and the push-pull piece drives the push rod to rotate through the connecting rod. Because the abutting piece is located between the pushing piece and the connecting rod, the abutting piece is rotationally connected with the bottom of the push rod, and the bottom of the abutting piece is connected with the damping piece, when the bottom of the connecting rod rotates to abut against the abutting piece, a limiting effect is generated on the push rod, and the limiting effect enables the push rod to be accurately locked into a vertical state in the rotating process. When the push rod is in a vertical state, the push rod can be better clamped with the bottom of the sample, so that the stability and reliability of grabbing the sample by the grabbing mechanism are ensured, and the whole sample unloading device can more efficiently and stably complete continuous grabbing and unloading work of the sample. Preferably, the number of the grabbing mechanisms is two, the grabbing mechanisms are symmetrically arranged, a connecting assembly is arranged between the two grabbing mechanisms, the connecting assembly comprises a first connecting piece and a second connecting piece which are arranged in parallel, two ends of the first connecting piece are respectively connected with the tops of the two connecting rods, and two ends of the second connecting piece are respectively connected with the bottoms of the two connecting rods. Through adopting above-mentioned technical scheme, grab material mechanism and set up to two and symmetric distribution, in sample uninstallation in-process, can snatch the operation to more samples simultaneously, perhaps snatch bigger sample structure, improved efficiency and the stability that the sample snatched greatly. The connecting assembly is arranged, two ends of a first connecting piece contained in the connecting assembly are connected with the tops of the two connecting rods, two ends of a second connecting piece are connected with the bottoms of the two connecting rods, and therefore a stable linkage relation is formed between the two grabbing mechanisms. When the driving mechanism drives the pushing mechanism to act, the two grabbing mechanisms can synchronously act through the connection effect of the connecting assembly, so that the coordination and consistency of the two grabbing mechanisms in grabbing samples are ensured. The synchronous action avoids the situation of sample grabbing errors or unstable grabbing caused by the asynchronous action of the two grabbing mechanisms, and further improves the success rate and stability of sample grabbing, so that the working efficiency and reliability of the whole sample unloading device are improved. Preferably, the abutting piece is provided with an abutting groove, and the second connecting piece can be abutted in the abutting groove in a rotating mode. Through adopting above-mentioned technical scheme, the butt spare sets up the butt groove, and when the second connecting piece rotated, can the butt in the butt inslot. The structural design ensures that the second connecting piece is matched with the abutting piece more stably and reliably in the movement process of the grabbing mechanism. The butt groove provides accurate location and butt position for the second connecting piece, has guaranteed that the connecting rod can move according to predetermined orbit and angle at the rotation in-process, and then ensures that the push rod can rotate to vertical state accurately, realizes the stable joint with the sample bottom, has improved the accuracy and the stability that grab material mechanism snatched the sample, is favorable to sample uninstallation device to snatch the sample in succession, high-efficient, has promoted the work efficiency and the reliability of whole sample uninstallation process. preferably, the driving mechanism comprises a base, a driving piece and a conveying piece, wherein the driving piece and the conveying piece are arranged on the base, the sliding rail is arranged on the base, the output end of the driving piece is connected with the conveying piece, and the conveying piece is connected with the pushing piece to drive the pushing piece to move. Through adopting above-mentioned technical scheme, because push-and-pull piece fixed connection of push-and-pull piece and grabbing material mechanism, the removal of push-and-pull piece can be through the linkage cooperation between push-and-pull piece, connecting rod and the damping piece, and the drive push rod rotates, realizes that the push rod stretches into or contracts out the through-hole of unloading platform and snatchs with joint sample bottom, accomplishes the sample. And the components such as the driving piece, the conveying piece, the pushing piece and the like are reasonably arranged on the base, so that the device is compact in structure and reasonable in layout, and the hardware cost and the control algorithm complexity are reduced.

In a second aspect, the application further provides a full-automatic fluorescent instrument, which comprises the sample unloading device, an unloading platform, a conveying device, a detection and identification device, a clamping and mixing device and a control system, wherein the unloading platform is horizontally arranged on the conveying device, the unloading platform is positioned above the sample unloading device, a through hole is formed in the starting position of the unloading platform, and the push rod can rotatably extend into or retract out of the through hole. By adopting the technical scheme, the driving mechanism in the sample unloading device can drive the pushing mechanism to reciprocate, the pushing mechanism acts on the grabbing mechanism, and the push rod of the grabbing mechanism can be connected with the pushing mechanism through the angle adjusting component and rotate to extend into or retract out of the through hole of the unloading platform. When the push rod stretches into the through hole, the push rod can be clamped with the bottom of the sample, so that the continuous grabbing of the sample is realized. The device is not limited by the lifting range of the vertical lifting mechanism, and can realize a large-range avoidance for test tube rack samples with larger volumes in a biochemical analyzer. In addition, through setting up sample uninstallation device at the discharge end of centre gripping mixing device, combine conveyor, detection recognition device, centre gripping mixing device and control system, can realize that the sample is from carrying, detection recognition, mixing to the full flow automation mechanized operation of uninstallation, further promoted the efficiency and the accuracy of whole testing process

In summary, the present application includes at least one of the following beneficial technical effects:

1. Compared with the prior art that a double independent motor drives the lifting and translating mechanism or a mechanical arm is used, the application adopts a mode that the driving mechanism drives the pushing mechanism and the grabbing mechanism, reduces power components and complex mechanical structures, thereby simplifying sample unloading structures, further reducing hardware cost and complexity of control algorithm, and simultaneously reducing fault points and reducing fault maintenance cost due to simplified structures;

2. The push rod of the grabbing mechanism can extend into or retract out of the grabbing mechanism in a rotating way, so that four-step operations of descending, translating, ascending and translating are not needed in the unloading process of samples like the prior art, double-power switching is avoided, time buffering needed by double-power switching is eliminated, the unloading cycle time of a single sample is shortened, and the working efficiency of the sample unloading process is improved;

3. The grabbing mechanism realizes the rotation of the push rod through the angle adjusting assembly, and the linkage cooperation among the connecting rod, the push-pull piece and the damping piece in the angle adjusting assembly can drive the push rod to rotate, so that the push rod can flexibly change the position, thereby avoiding the detection platform, and realizing the wide range avoidance of the test tube rack with larger volume.

Drawings

FIG. 1 is a block diagram of a sample unloading apparatus according to embodiment 1;

FIG. 2 is an exploded view of a sample unloading device according to example 1;

FIG. 3 is a bottom view of the pushing mechanism and the grasping mechanism of the sample unloading device according to example 1;

FIG. 4 is a side view of a sample unloading device according to example 1;

FIG. 5 is a sample unloading device installation schematic diagram of a full-automatic fluorescence meter according to example 2.

The reference numerals are 1, a driving mechanism, 2, a pushing mechanism, 3, a grabbing mechanism, 11, a base, 12, a driving piece, 13, a conveying piece, 14, a mounting rack, 15, a belt pressing plate, 131, a belt, 132, a belt pulley, 21, a pushing piece, 22, a sliding piece, 23, a photoelectric sensing structure, 221, a sliding rail, 222, a sliding block, 31, a push rod, 32, an angle adjusting component, 33, a locking component, 34, a connecting component, 321, a connecting rod, 322, a push-pull piece, 323, a damping piece, 331, an abutting piece, 332, a pin shaft, 331a, an abutting groove, 341, a first connecting piece, 342, a second connecting piece, 4, a discharging platform, 5, a sample, 6, a conveying device and 41, and a through hole.

Detailed Description

The application is described in further detail below with reference to fig. 1-5.

Example 1

According to the sample unloading device provided by the embodiment of the application, referring to fig. 1and 2, the sample unloading device comprises a driving mechanism 1, a pushing mechanism 2 and a grabbing mechanism 3, wherein the driving mechanism 1 is used for driving the pushing mechanism 2 to linearly reciprocate between a starting position and a final position of a discharging platform 4, the pushing mechanism 2 acts on the grabbing mechanism 3, the grabbing mechanism 3 is used for continuously grabbing a sample 5 at the starting position of the discharging platform 4, the pushing mechanism 2 is used for pushing the grabbing mechanism 3, so that the sample 5 is driven to move from the starting position to the final position of the discharging platform 4, the grabbing mechanism 3 returns to the starting position along an original path after grabbing the sample 5, and the unloading action of the next sample 5 is carried out.

Specifically, the driving mechanism 1 of the present embodiment includes a base 11, a driving member 12 and a conveying member 13 disposed on the base 11, an output end of the driving member 12 is connected to the conveying member 13, and the conveying member 13 is connected to the pushing member 21 to drive the pushing member 21 to move.

The base 11 is formed by welding metal plates, plays a role in supporting the whole driving mechanism 1, and is in a rectangular frame structure. The driving member 12 can precisely control the rotation angle and speed by using a motor such as a stepping motor. The conveying member 13 is a belt transmission device and consists of a belt 131 and a belt pulley 132, specifically, the belt pulley 132 comprises a driving wheel and a driven wheel, the driving wheel and the driven wheel are horizontally arranged, a motor drives the driving wheel to rotate, the belt 131 is sleeved on the driving wheel and the driven wheel to realize the circular rotation of the belt 131, and the stable transmission of power can be realized. When the driving member 12 operates, power is transmitted to the pushing member 21 through the transmitting member 13, so that the pushing member 21 performs reciprocating movement. For example, when the stepping motor is started, the belt pulley 132 is driven to rotate, and the belt 131 rotates accordingly, so that the pushing member 21 connected to the belt 131 is driven to reciprocate.

Specifically, the pushing mechanism 2 of the present embodiment includes a pushing member 21 and a slider 22.

The pushing member 21 of the present embodiment is a push plate, has a rectangular plate shape, and functions to transmit the power of the driving mechanism 1. The pushing piece 21 is connected with the sliding piece 22, the sliding piece 22 comprises a sliding rail 221 and a sliding block 222 without damping, the sliding rail 221 is made of steel, and the surface of the sliding rail 221 is subjected to finish machining, so that the sliding piece has good flatness and wear resistance and is in a long strip shape. The sliding block 222 is slidably disposed on the sliding rail 221, and is made of metal. Specifically, a male-female structural fit is provided between the slide rail 221 and the slider 222 to form a slip fit. The bottom of the push plate is connected with a sliding block 222, and the driving mechanism 1 drives the pushing piece 21 to reciprocate. The pushing piece 21 is fixedly connected with the grabbing mechanism 3. When the driving mechanism 1 provides power, the pushing piece 21 is driven by the sliding block 222 to reciprocate along the sliding rail 221, and the pushing piece 21 is fixedly connected with the grabbing mechanism 3, so that the grabbing mechanism 3 is driven to move, and further the grabbing mechanism 3 is driven. Particularly, the bottom of the pushing plate is connected with the belt 131 through a mounting frame 14 and a belt pressing plate 15, so as to realize transmission, specifically, the bottom of the mounting frame 14 is abutted on the belt 131, the belt pressing plate 15 is abutted on the lower surface of the belt 131, the bottom of the mounting frame 14 is connected with the belt pressing plate 15 through bolts, the top of the mounting frame 14 is connected with the pushing plate through bolts, the mounting frame 14 of the embodiment is of a U-shaped structure, and other shapes can be adopted in other embodiments, so long as stable connection between the pushing plate and the belt 131 can be satisfied.

Specifically, the material grabbing mechanism 3 of the present embodiment includes a push rod 31, an angle adjusting assembly 32, and a locking assembly 33.

The push rod 31 is connected with the pushing mechanism 2 through an angle adjusting component 32 and can be rotatably extended into or retracted out. The push rod 31 is made of metal, has certain strength and corrosion resistance, is rod-shaped, and is designed to be convenient to clamp with the bottom of the sample 5.

The angle adjusting assembly 32 includes a connecting rod 321, a push-pull member 322 and a damping member 323, wherein the connecting rod 321 is a metal rod, the shape of the connecting rod is a straight rod, and two ends of the connecting rod are provided with rotating shaft holes so as to be connected with other components in a rotating way. The connecting rod 321 is respectively connected with the middle part of the push rod 31 and the push-pull piece 322 in a rotating way, and the specific connection mode can be through bearing connection, so that the flexibility of the connecting rod 321 in rotation can be ensured. The push-pull member 322 is a long push-pull rod arranged along the pushing direction, and is made of metal, and one end of the push-pull rod is connected with the push plate.

The damping member 323 is slidably disposed on the sliding rail 221, and the damping member 323 is a magnetic damper, so that a more accurate damping force can be provided, and the stability of rotation is ensured. The slider 222 with damping and the slider 222 without damping are disposed in this order along the discharge conveying direction.

Referring to fig. 1 and 3, the locking assembly 33 includes an abutment 331 and a pin 332. The abutting part 331 is made of metal, is plate-shaped and smooth in surface, is positioned between the pushing part 21 and the connecting rod 321, and is rotationally connected with the bottom of the push rod 31, and the specific connection mode is that the abutting part 331 is connected through the pin shaft 332, so that the rotating flexibility is ensured. The bottom of the abutting piece 331 is fixedly connected with the damping slider 222, the bottom of the connecting rod 321 can be movably abutted against the abutting piece 331, and when the bottom of the connecting rod 321 is moved to be abutted against the abutting piece 331 due to the damping slider 222, the push rod 31 is rotated to be in a vertical state. This design can ensure that the push rod 31 is in a stable vertical state when grabbing the sample 5, and improves the grabbing reliability. For example, when the push rod 31 rotates to a certain angle, the bottom of the connecting rod 321 abuts against the abutting piece 331, at this time, the abutting piece 331 stabilizes the push rod 31 in a vertical state through connection with the damping piece 323 and rotation connection with the bottom of the push rod 31, the top of the connecting rod 321 is connected with the rotation of the push rod 31, and along with movement of the push-pull piece 322, the push rod 31 can rotate around the point where the push rod 31 is rotationally connected with the connecting rod 321, so that the push rod 31 rotates from an inclined state to a vertical state, and the push rod 31 is clamped with the bottom of the sample 5 more firmly.

Specifically, when the pushing mechanism 2 is operated, the push rod 31 is driven to rotate by the interlocking engagement of the push-pull member 322, the link 321, and the damper 323. When the push-pull member 322 moves under the driving of the push mechanism 2, the connecting rod 321 rotates along with the movement of the push-pull member 322, and the connecting rod 321 is connected with the middle part of the push rod 31, meanwhile, the bottom of the push rod 31 is connected with the damping member 323, and the movement of the bottom of the push rod 31 is limited by the sliding of the damping member 323, so that the push rod 31 rotates around the connection point with the connecting rod 321, and the extending or retracting action is realized. For example, when the driving mechanism 1 drives the pushing mechanism 2 to move forward, the push-pull member 322 is pushed forward, the connecting rod 321 rotates along with the push rod, under the action of the damping member 323, the bottom of the push rod 31 moves along a certain track, so that the push rod 31 gradually rotates to extend into the discharging platform 4, and when the barb-shaped structure at the bottom of the push rod 31 is clamped with the bottom of the sample 5, the driving mechanism 1 acts in a reverse direction to drive the pushing mechanism 2 to move backward, so that the sample 5 is grabbed and unloaded.

Specifically, the number of the grabbing mechanisms 3 in this embodiment is two, and the grabbing mechanisms are symmetrically disposed on two sides of the pushing member 21, and a connection assembly 34 is disposed between the two grabbing mechanisms 3.

The connecting assembly 34 includes a first connecting member 341 and a second connecting member 342 arranged in parallel, and the first connecting member 341 and the second connecting member 342 are both metal rods and have a straight rod shape. The first connecting piece 341 has two ends connected to the top of the two connecting rods 321, respectively, and the second connecting piece 342 has two ends connected to the bottom of the two connecting rods 321, respectively. An accommodating cavity for accommodating the abutting part 331 is formed between the second connecting part 342 and the pushing plate, the abutting part 331 is provided with an abutting groove 331a, the second connecting part 342 is rotatably abutted in the abutting groove 331a, and when the second connecting part 342 is abutted in the abutting groove 331a, the connection stability between the two grabbing mechanisms 3 can be further enhanced. For example, when the driving mechanism 1 drives the pushing mechanism 2 to act, the push rods 31 of the two grabbing mechanisms 3 rotate simultaneously, the first connecting piece 341 and the second connecting piece 342 ensure that the connecting rods 321 of the two grabbing mechanisms 3 act cooperatively, and when the second connecting piece 342 abuts against the abutting groove 331a, the relative displacement between the two grabbing mechanisms 3 is further limited, so that the two grabbing mechanisms 3 can grab the sample 5 more stably and simultaneously.

Referring to fig. 2 and 4, in particular, the pushing mechanism 2 of the present embodiment is further provided with a photoelectric sensing structure 23, specifically, a photoelectric plate is disposed on one side of the push plate and moves synchronously along with the push plate, a photoelectric sensor is disposed on the base, and when the base is in an initial position, the photoelectric plate cooperates with the photoelectric sensor to monitor whether the push plate is reset to the initial position of the unloading platform.

The implementation principle of the embodiment is that a driving mechanism 1 is taken as a core, and the unloading of the sample 5 is realized through ordered linkage among all components, and the specific flow is as follows:

and the power is started and transmitted, namely a motor in the driving mechanism 1 is started to drive a driving wheel of the belt transmission device to rotate, a belt 131 sleeved on the driving wheel and the driven wheel circularly rotates along with the driving wheel and the driven wheel, and the power is stably transmitted to a pushing piece 21 connected with the belt 131.

The pushing mechanism 2 moves, namely the pushing piece 21 moves linearly and reciprocally along the sliding rail 221 under the guiding action of the sliding rail 221 and the sliding block 222 under the power driving, and the pushing piece is locked when the pushing rod 31 rotates to the vertical state under the limiting action of the damping sliding block 222, so that the pushing rod 31 is ensured to retract in time. The bottom of the push plate is stably connected with the belt 131 through the mounting frame 14 and the belt pressing plate 15, so that reliable power transmission is ensured.

The grabbing mechanism 3 is in linkage preparation, and the push plate moves to drive the push-pull piece 322 fixedly connected with the push plate to move. The push-pull piece 322 is rotationally connected with one end of the connecting rod 321, the other end of the connecting rod 321 is rotationally connected with the middle part of the push rod 31, and meanwhile, the bottom of the push rod 31 is connected with the damping slide block 222 which is slidably arranged on the slide rail 221. The push rod 31 rotates to grab the sample 5, when the push-pull piece 322 moves forward along with the push plate, the connecting rod 321 rotates along with the push rod, and the bottom of the push rod 31 is limited by the sliding of the damping piece 323, so that the push rod 31 rotates around a connecting point with the connecting rod 321 and gradually stretches into the discharging platform 4. The push rod 31 top design is convenient for with sample 5 bottom joint, when rotating to suitable angle, push rod 31 and sample 5 bottom joint accomplish sample 5 and snatch. At this time, the locking assembly 33 acts, the bottom of the connecting rod 321 moves to abut against the abutting piece 331, and the abutting piece 331 is located between the pushing piece 21 and the connecting rod 321 and is rotationally connected with the bottom of the push rod 31, the bottom is fixedly connected with the damping slider 222, and the push rod 31 is locked in a vertical state under the action of the damping slider 222, so that the grabbing reliability is ensured.

And the sample 5 is unloaded and the push rod 31 is reset, namely the driving mechanism 1 acts reversely to drive the pushing mechanism 2 to move backwards, the push-pull piece 322 moves backwards along with the push-pull mechanism, the connecting rod 321 rotates reversely, the push rod 31 gradually tapers out of the unloading platform 4 under the action of the connecting rod 321 and the damping piece 323, and the sample 5 is unloaded. Then, the gripping mechanism 3 releases the gripping of the sample 5, returns to the initial position along the original path, and prepares for the next sample 5 unloading operation.

The double grabbing mechanisms 3 work cooperatively, namely, the device is provided with two symmetrical grabbing mechanisms 3, and the top and the bottom of the two connecting rods 321 are respectively connected through a first connecting piece 341 and a second connecting piece 342 which are arranged in parallel to realize synchronous action. The abutting piece 331 is provided with an abutting groove 331a, the second connecting piece 342 is rotatably abutted in the abutting groove, the connection stability of the two grabbing mechanisms 3 is enhanced, the simultaneous stable grabbing of the sample 5 is ensured, and the unloading efficiency is improved.

Example 2

The embodiment of the application provides a full-automatic fluorometer, referring to fig. 5, which comprises the sample unloading device, and further comprises a conveying device 6, a detection and identification device, a clamping and mixing device and a control system in sequence. Sample 5 is a rack of test tubes.

The sample unloading device of this embodiment sets up in the discharge end of centre gripping mixing device, and conveyor 6 is provided with the platform 4 of unloading, and the platform 4 level of unloading is installed in conveyor 6, and is located sample unloading device top, and the platform 4 initial position of unloading is provided with through-hole 41, and the quantity of through-hole 41 has two, and the symmetry sets up, and the shape is rectangular shape through-hole 41, and push rod 31 rotatable stretches into or withdraws out this through-hole 41. After the sample 5 is uniformly mixed by the detection and identification device and the clamping and uniformly mixing device, the sample reaches the feeding end of the discharging platform 4. At this time, the driving mechanism 1 drives the pushing mechanism 2, the pushing mechanism 2 acts on the grabbing mechanism 3, so that the push rod 31 rotates to extend into the unloading platform 4 to be clamped with the bottom of the sample 5, and then the driving mechanism 1 drives the pushing mechanism 2 to move so as to unload the sample 5 from the unloading platform 4. The conveying direction of the conveying device 6 is perpendicular to the feeding direction of the discharging device.

Specifically, the conveying device 6 of this embodiment is provided with a pushing rod, the pushing rod conveys the test tube rack being conveyed on the conveying device 6 to the feeding end of the discharging platform 4, then the sample 5 is pushed out so that the bottom of the test tube rack can correspond to the through hole 41 on the discharging platform 4, the sample unloading device is convenient to unload, the conveying device 6 conveys the sample 5 in a linear conveying manner, the common conveying device 6 can be a conveying belt, the material is rubber or plastic, and anti-skid grains can be arranged on the surface of the conveying device to ensure the stability of the sample 5 in the conveying process.

The detection and recognition means may be an optical detection device, such as a fluorescence detector, for recognizing the information of the sample 5 by detecting a fluorescence signal emitted by the sample 5. An alternative feature may be an electrochemical detection device adapted to detect a sample 5 of a particular chemical composition, or a mass spectrometer which provides more accurate sample 5 composition information. For example, the fluorescence detector excites a fluorescent substance in the sample 5 by emitting light of a specific wavelength, and then detects a fluorescent signal emitted from the sample 5, thereby identifying the relevant information of the sample 5. If it is desired to detect a specific chemical component in the sample 5, an electrochemical detection device may be selected that detects the chemical component in the sample 5 by generating an electrical signal through a chemical reaction.

The clamping and mixing device is used for clamping the sample 5 and carrying out mixing operation, a common clamping mode can be a mechanical clamping jaw, the material is metal, and clamping and loosening actions are realized through motor driving. The mixing mode is rotary mixing, and the sample 5 is driven to rotate by a motor, so that the sample 5 is fully mixed under the action of centrifugal force.

The control system can be a programmable logic controller PLC, and can accurately control each component of the whole fluorometer. The PLC controls the motor of the driving mechanism 1, the conveyer belt motor of the conveyer device 6, the detection action of the detection and identification device, the clamping jaw action of the clamping and mixing device, the mixing motor and the like through programming, so that the coordination work of all the components is ensured. If the requirement on the cost is high, a singlechip control system can be selected, the cost is low, and the control function is relatively simple. An industrial computer control system may be selected if more complex control functions, such as data processing, remote monitoring, etc., are to be implemented.

The implementation principle of the embodiment is that the full-automatic fluorometer realizes automatic conveying, detecting, mixing and unloading of the sample 5 by combining the sample unloading device with the conveying device 6, the detecting and identifying device, the clamping and mixing device and the control system. The simplified structure and the efficient working mode of the sample unloading device improve the sample 5 processing efficiency of the whole fluorometer and shorten the detection period. Meanwhile, the detection accuracy and reliability of the sample 5 are guaranteed due to the cooperative work among the devices. The accurate control of the control system ensures that the whole fluorometer can stably run, and meets the requirements of modern medical detection on high efficiency and accuracy.

The above embodiments are not intended to limit the scope of the application, so that the equivalent changes of the structure, shape and principle of the application are covered by the scope of the application.

Claims (8)

1. The sample unloading device is characterized by comprising a driving mechanism (1), a pushing mechanism (2) and a grabbing mechanism (3), wherein the driving mechanism (1) drives the pushing mechanism (2) to reciprocate, the pushing mechanism (2) acts on the grabbing mechanism (3) and is used for continuously grabbing a test tube rack, the grabbing mechanism (3) comprises a push rod (31) and an angle adjusting component (32), the push rod (31) is connected with the pushing mechanism (2) through the angle adjusting component (32) and can be rotatably stretched into or out of the push rod, when the push rod (31) stretches into a discharging platform (4), the push rod (31) is clamped with the bottom of the test tube rack, the angle adjusting component (32) comprises a connecting rod (321), a push-pull piece (322) and a damping piece (323), the connecting rod (321) is respectively connected with the middle part of the push rod (31) and the push-pull piece (322) in a rotating way, the push-pull piece (322) is connected with the output end of the pushing mechanism (2), the damping piece (323) can be slidably arranged, when the push rod (31) stretches into the discharging platform (4), the bottom of the push rod (31) is matched with the damping piece (323) through the damping piece (323), and the damping piece (323) when the push rod (323) is matched with the damping piece (323), the material grabbing mechanism (3) further comprises a locking assembly (33), the locking assembly (33) comprises a butt piece (331), the butt piece (331) is located between the pushing piece (21) and the connecting rod (321), the butt piece (331) is rotationally connected with the bottom of the pushing rod (31), the bottom of the butt piece (331) is connected with the damping piece (323), the bottom of the connecting rod (321) is rotationally abutted to the butt piece (331), and when the bottom of the connecting rod (321) rotates to be abutted to the butt piece (331), the pushing rod (31) rotates to be in a vertical state.

2. Sample unloading device according to claim 1, wherein the pushing mechanism (2) comprises a pushing member (21) and a sliding member (22), the pushing member (21) is connected with the sliding member (22), the driving mechanism (1) drives the pushing member (21) to reciprocate, and the pushing member (21) is fixedly connected with the pushing member (322).

3. Sample unloading device according to claim 2, wherein the slide (22) comprises a slide rail (221) and a slide block (222), the slide rail (221) is arranged on the driving mechanism (1), the slide block (222) is arranged on the slide rail (221) in a sliding manner, and the pushing member (21) is connected with the slide block (222).

4. A sample unloading device according to claim 3, wherein the damping member (323) is slidably arranged to the slide rail (221).

5. Sample unloading device according to claim 2, wherein the number of the grabbing mechanisms (3) is two, and the grabbing mechanisms are symmetrically arranged, a connecting assembly (34) is arranged between the two grabbing mechanisms (3), the connecting assembly (34) comprises a first connecting piece (341) and a second connecting piece (342) which are arranged in parallel, two ends of the first connecting piece (341) are respectively connected with the tops of the two connecting rods (321), and two ends of the second connecting piece (342) are respectively connected with the bottoms of the two connecting rods (321).

6. Sample unloading device according to claim 5, wherein the abutment member (331) is provided with an abutment groove (331 a), the second connection member (342) being rotatably abutted in the abutment groove (331 a).

7. A sample unloading device according to claim 3, characterized in that the driving mechanism (1) comprises a base (11), a driving member (12) and a conveying member (13) which are arranged on the base (11), the sliding rail (221) is arranged on the base (11), the output end of the driving member (12) is connected with the conveying member (13), and the conveying member (13) is connected with the pushing member (21) to drive the pushing member (21) to move.

8. The full-automatic fluorometer is characterized by comprising the sample unloading device according to any one of claims 1-7, and further comprising a discharging platform (4), a conveying device (6), a detection and identification device, a clamping and mixing device and a control system in sequence, wherein the discharging platform (4) is horizontally arranged on the conveying device (6), the discharging platform (4) is positioned above the sample unloading device, a through hole (41) is formed in the starting position of the discharging platform (4), and the push rod (31) can rotatably extend into or retract out of the through hole (41).