阅读说明：本技术 推进机构、进样装置及样本架推进方法 (Propelling mechanism, sample feeding device and sample rack propelling method ) 是由 常先华 张乐平 高再兴 于 2019-06-25 设计创作，主要内容包括：本发明公开了一种推进机构、进样装置及样本架推进方法,属于试验装置分配调度技术领域,为解决现有推进机构在是否推进到位时容易发生误判的问题而设计。本发明推进机构包括：主动模块、被动模块、弹性连接件、驱动装置和检测组件,主动模块通过弹性连接件带动被动模块运动,驱动装置用于驱动主动模块运动,检测组件用于在被动模块到达目标位置后发出提示信号。本发明推进机构、进样装置及样本架推进方法实现样本架的柔性推进,弹性连接件既能保证将样本架推进到位,又能避免在样本架到位后继续被推进而导致被损坏,使用方便,推进效率高,适用于各种进样装置中。(The invention discloses a propelling mechanism, a sample feeding device and a sample rack propelling method, belongs to the technical field of distribution and scheduling of test devices, and is designed for solving the problem that misjudgment is easy to occur when the existing propelling mechanism propels in place or not. The propulsion mechanism of the present invention comprises: the device comprises an active module, a passive module, an elastic connecting piece, a driving device and a detection assembly, wherein the active module drives the passive module to move through the elastic connecting piece, the driving device is used for driving the active module to move, and the detection assembly is used for sending a prompt signal after the passive module reaches a target position. The propelling mechanism, the sample feeding device and the sample frame propelling method realize the flexible propelling of the sample frame, the elastic connecting piece can not only ensure that the sample frame is propelled in place, but also avoid the damage caused by the fact that the sample frame is continuously propelled after being in place, the use is convenient, the propelling efficiency is high, and the sample frame propelling method is suitable for various sample feeding devices.)

1. A propulsion mechanism, comprising:

an active module (1) is provided,

a passive module (2) for the passive module,

the active module (1) drives the passive module (2) to move through the elastic connecting piece (3),

a drive device (4) for driving the active module (1) in motion, and

and the detection assembly (5) is used for sending out a prompt signal after the passive module (2) reaches the target position.

2. The propulsion mechanism according to claim 1, characterized in that it further comprises a guiding element (6), the active module (1) and the passive module (2) being mounted on the guiding element (6).

3. The propulsion mechanism according to claim 1, characterised in that the elastic connection (3) is a tension spring, a compression spring, a spring plate or an elastic element made of a flexible material.

4. The propulsion mechanism according to claim 1, characterised in that the elastic connection (3) comprises a compression spring and a guide limit rod, which is at least partially inserted into the compression spring.

5. The advancing mechanism according to claim 1, characterized in that the detection assembly (5) comprises a mask (51) and a correlation sensor (52), one of the mask (51) and the correlation sensor (52) being arranged on the active module (1) and the other on the passive module (2); the shutter (51) can be inserted into the correlation sensor (52) or extracted from the correlation sensor (52) after the passive module (2) reaches a target position;

or, the detection component (5) comprises a distance sensor and a sensing piece, one of the distance sensor and the sensing piece is arranged on the active module (1), and the other one is arranged on the passive module (2);

or, the detection component (5) comprises a pressure sensor and a contact piece, one of the pressure sensor and the contact piece is arranged on the active module (1), and the other one is arranged on the passive module (2);

or, the detection assembly (5) comprises a reflective sensor and a mask.

6. The advancing mechanism according to any one of claims 1 to 5, characterized in that the passive module (2) comprises a push plate (21), a vertical guide rail (22), a vertical driving device (23), a base (24) and a transmission assembly, wherein the transmission assembly is connected between the vertical driving device (23) and the push plate (21), and the push plate (21) can move up and down along the vertical guide rail (22).

7. The advancing mechanism according to claim 6, wherein the transmission assembly comprises a lifting plate (25) mounted on the push plate (21), and a rotating arm (26) connected to the output end of the vertical driving device (23), the lifting plate (25) is provided with a strip hole (27), and an end (28) of the rotating arm (26) is inserted into the strip hole (27); the lifting plate (25) can move along the vertical guide rail (22).

8. The propulsion mechanism according to claim 6, characterized in that said transmission assembly comprises a screw rod connected to said vertical driving means (23), said screw rod being threaded on said push plate (21).

9. A propulsion mechanism according to claim 6, characterised in that the transmission assembly comprises a toothed wheel and a toothed rack in mesh, one of the toothed wheel and the toothed rack being provided on the push plate (21) and the other on the vertical drive means (23).

10. The advancing mechanism of claim 6, wherein the transmission assembly comprises a timing belt and a pulley, one of which is disposed on the push plate (21) and the other of which is disposed on the vertical drive (23).

11. A sample introduction device comprising a sample rack (30), characterized in that it further comprises a pushing mechanism according to any of claims 1 to 10, a passive module (2) being capable of pushing the sample rack (30) to a target position.

12. The sample rack propelling method is characterized in that an active module (1) drives a passive module (2) to move through an elastic connecting piece (3), and the passive module (2) drives a sample rack (30) to move forwards; when the passive module (2) reaches the target position, the passive module (2) stops and the active module (1) continues to move forward, the detection assembly (5) sends a prompt signal after the distance that the active module (1) continues to move forward exceeds a set value, and the active module (1) stops moving.

13. The specimen rack propulsion method according to claim 12, characterized in that the active module (1) after stopping its motion further comprises the steps of: the driving module (1) moves reversely to drive the driven module (2) to return; when the passive module (2) does not reach the position to be pushed of the next batch of sample racks (30) placed in a sample feeding device, the passive module (2) moves downwards until the top surface of the passive module (2) is lower than the bottom surface of the next batch of sample racks (30); and the passive module (2) continues to return until the passive module is positioned behind the next batch of sample racks (30), and the passive module (2) moves upwards to a set height.

14. The method according to claim 13, further comprising the following steps after the passive module (2) is moved up to a set height: the active module (1) drives the passive module (2) to move forwards through the elastic connecting piece (3) again, and the passive module (2) drives the sample rack (30) to move forwards.

Technical Field

The invention relates to the technical field of distribution and scheduling of test devices, in particular to a propelling mechanism, a sample feeding device comprising the propelling mechanism and a sample frame propelling method.

Background

When the device is used, various devices such as test tubes and the like need to be pushed to a specified position through a pushing device, and distribution and scheduling of the devices are achieved.

In the existing propelling devices, a sensor is arranged on a sample feeding device or a sample rack, and when the sample rack is propelled to reach a target position, the sensor is triggered, so that the propelling action is stopped. Errors may occur in the stop position of the sample holder due to errors in both sensor installation and sensing. The sensor has been triggered when the sample rack has not yet reached the target position, resulting in the sample rack not being advanced in place; the pusher continues to advance when the sample rack has reached the target position but the sensor is still not triggered, causing the sample rack to crash into the front rail, which in turn causes damage to the sample rack and pusher.

Disclosure of Invention

One object of the present invention is to provide a pushing mechanism which can ensure that a sample rack is pushed into place, and can avoid damage caused by the fact that the sample rack is continuously pushed after being in place.

Another object of the present invention is to provide a sample feeding device that can prevent the sample rack from being continuously pushed to be damaged after the sample rack is pushed in place while ensuring that the sample rack is pushed in place.

It is a further object of the present invention to provide a method of sample rack advancement that ensures that the sample rack is advanced into position while allowing sufficient time for the detection assembly to be activated.

To achieve the purpose, on one hand, the invention adopts the following technical scheme:

a propulsion mechanism, comprising: the device comprises an active module, a passive module and an elastic connecting piece, wherein the active module drives the passive module to move through the elastic connecting piece, a driving device is used for driving the active module to move, and a detection assembly is used for sending a prompt signal after the passive module reaches a target position.

In particular, the propulsion mechanism further comprises a guiding element on which the active module and the passive module are mounted.

Particularly, the elastic connecting piece is a tension spring, a pressure spring, an elastic sheet or an elastic piece made of flexible materials.

In particular, the elastic connecting piece comprises a pressure spring and a guide limiting rod, and the guide limiting rod is at least partially arranged in the pressure spring in a penetrating mode.

In particular, the detection assembly comprises a mask and a correlation sensor, one of the mask and the correlation sensor being arranged on the active module and the other on the passive module; the shielding piece can be inserted into or extracted from the correlation sensor after the passive module reaches a target position; or, the detection component comprises a distance sensor and a sensing piece, one of the distance sensor and the sensing piece is arranged on the active module, and the other one of the distance sensor and the sensing piece is arranged on the passive module; or, the detection component comprises a pressure sensor and a contact piece, one of the pressure sensor and the contact piece is arranged on the active module, and the other is arranged on the passive module; alternatively, the detection assembly comprises a reflective sensor and a mask.

Particularly, the passive module comprises a push plate, a vertical guide rail, a vertical driving device, a base and a transmission assembly, wherein the transmission assembly is connected between the vertical driving device and the push plate, and the push plate can move up and down along the vertical guide rail.

Furthermore, the transmission assembly comprises a lifting plate arranged on the push plate and a rotating arm connected to the output end of the vertical driving device, the lifting plate is provided with a long hole, and the end of the rotating arm penetrates through the long hole; the lifting plate can move along the vertical guide rail.

Particularly, the transmission assembly comprises a screw rod connected to the vertical driving device, and the screw rod penetrates through the push plate.

In particular, the transmission assembly comprises a gear and a rack which are meshed with each other, one of the gear and the rack is arranged on the push plate, and the other one of the gear and the rack is arranged on the vertical driving device.

Particularly, the transmission assembly comprises a synchronous belt and a belt wheel, one of the synchronous belt and the belt wheel is arranged on the push plate, and the other one of the synchronous belt and the belt wheel is arranged on the vertical driving device.

On the other hand, the invention adopts the following technical scheme:

a sample feeding device comprises a sample rack and the pushing mechanism, wherein a passive module can push the sample rack to a target position.

On the other hand, the invention adopts the following technical scheme:

a sample rack propelling method is characterized in that an active module drives a passive module to move through an elastic connecting piece, and the passive module drives a sample rack to move forwards; when the passive module reaches the target position, the passive module stops and the active module continues to move forward, the detection assembly sends out a prompt signal after the distance that the active module continues to move forward exceeds a set value, and the active module stops moving.

Further, the method also comprises the following steps after the active module stops moving: the driving module moves reversely to drive the driven module to return; when the passive module does not reach the position to be pushed of the next batch of sample racks placed in the sample feeding device, the passive module moves downwards until the top surface of the passive module is lower than the bottom surface of the next batch of sample racks; and the passive module continues to return until the passive module is positioned behind the next batch of sample racks, and the passive module moves upwards to a set height.

Furthermore, after the passive module moves upwards to the set height, the method further comprises the following steps: the active module drives the passive module to move forwards through the elastic connecting piece again, and the passive module drives the sample rack to move forwards.

The driving module of the propelling mechanism drives the driven module to move through the elastic connecting piece, so that the flexible propelling of the sample rack is realized, the elastic connecting piece can not only ensure that the sample rack is propelled in place, but also avoid the damage caused by the fact that the sample rack is continuously propelled after being in place, the use is convenient, the propelling efficiency is high, and the propelling mechanism is suitable for various sample feeding devices.

The sample feeding device comprises the propelling mechanism, and the sample rack can be guaranteed to be propelled in place, and meanwhile, the sample rack can be prevented from being continuously propelled after being in place to be damaged. The pushing mechanism can be used no matter the sample rack and the device to be pushed are made of hard materials and cannot be damaged even if rigid collision occurs, or the sample rack and the device to be pushed are made of fragile materials and can be damaged after slight collision, so that the pushing mechanism is suitable for distribution scheduling of various devices, and is particularly suitable for pushing test tubes.

According to the sample rack propelling method, the driving module drives the driven module to move through the elastic connecting piece, after the driven module reaches the target position, the driven module stops, the driving module continues to move until the detection assembly sends out the prompt signal, the elastic connecting piece has the capacity of elastic deformation, sufficient time is reserved for triggering of the detection assembly while the sample rack is propelled in place, and the accuracy of propelling in place is high.

Drawings

FIG. 1 is a schematic structural diagram of a sample injection device according to an embodiment of the present invention;

FIG. 2 is a schematic view of a propulsion mechanism according to an embodiment of the present invention in a normal propulsion configuration;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a side view of a propulsion mechanism provided in accordance with an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a propulsion mechanism according to an embodiment of the present invention, in which a passive module reaches a target position and an active module continues to advance;

fig. 6 is a schematic structural diagram of a lifting device according to an embodiment of the present invention.

In the figure:

1. an active module; 2. a passive module; 3. an elastic connecting member; 4. a drive device; 5. a detection component; 6. a guide member; 20. a tray; 21. pushing the plate; 22. a vertical guide rail; 23. a vertical drive device; 24. a base; 25. a lifting plate; 26. a rotating arm; 27. a strip hole; 28. a tip; 29. a guide block; 30. a sample rack; 51. a mask; 52. a correlation sensor.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

The embodiment discloses a propelling mechanism, a sample feeding device comprising the propelling mechanism and a sample frame propelling method. As shown in fig. 1, the sample introduction device comprises a tray 20, a sample rack 30 placed in the tray 20, and a pushing mechanism, and the push plate 21 of the passive module can push the sample rack 30 to a target position. The sample rack propulsion method may be based on the propulsion mechanism, or may be based on propulsion mechanisms of other configurations.

As shown in fig. 2 to 5, the propulsion mechanism includes an active module 1, a passive module 2, an elastic connecting member 3, a driving device 4 for driving the active module 1 to move, a detecting assembly 5 for sending a prompt signal after the passive module 2 reaches a target position, and a guiding element 6, wherein the active module 1 can drive the passive module 2 to move through the elastic connecting member 3. In fig. 2 and 5, the direction indicated by the arrow C is the forward direction of the propulsion, and the direction indicated by the arrow B is the return direction.

The elastic connecting member 3 is a tension spring, a compression spring, a spring plate, or an elastic member made of a flexible material, and the elastic member made of a flexible material may be, but is not limited to, an annular structure or a columnar structure made of a flexible material such as rubber. When the elastic connecting piece 3 is a tension spring, the driving module 1 is positioned in front of the driven module 2 in the pushing process, the driving module 1 pulls the driven module 2 to move forward, and the driving module 1 pushes the driven module 2 to return along the original path in the return process; when the elastic connecting piece 3 is a pressure spring or a shrapnel, the active module 1 is positioned behind the passive module 2 in the pushing process, the active module 1 pushes the passive module 2 to move forward, and the active module 1 pulls the passive module 2 to return along the original path in the return process; the elastic member made of flexible material determines the relative position relationship of the active module 1 and the passive module 2 according to the specific configuration.

When the elastic connecting piece 3 is a pressure spring, a guide limiting rod can be arranged in the pressure spring in a penetrating mode, one end of the guide limiting rod is fixed on the driving module 1 or the driven module 2, and the other end of the guide limiting rod is a free end. When the active module 1 pushes the passive module 2 to advance through the compression spring, two ends of the compression spring are subjected to extrusion force, and the middle part of the compression spring is likely to arch towards the side surface. After the guide limiting rod is arranged in a penetrating mode, the trend that the middle part of the pressure spring arches towards the side face is restrained, the pressure spring can only apply thrust forwards and backwards, and the propulsion mechanism can work normally.

The sample frame propelling method comprises the following steps: the active module 1 drives the passive module 2 to move forward along the guide element 6 through the elastic connecting piece 3, and the passive module 2 pushes the sample rack 30 to move forward. When the passive module 2 reaches the target position, the passive module 2 stops and the active module 1 continues to move forward, and when the distance that the active module 1 continues to move forward exceeds a set value, the detection assembly 5 sends a prompt signal, so that the active module 1 stops moving.

Wherein, the passive module 2 reaching the target position means that the passive module 2 pushes the whole sample rack 30 to abut against the extreme position in the sample injection device (for example, the front end of the inner wall or the device located at the front side in the sample injection device). When the sample rack 30 has only one or more rows of sample racks 30 without gaps, the passive module 2 reaches the target position when the sample rack 30 in the first row abuts against the limit position in the sample feeding device, and the passive module 2 stops; when gaps exist among the sample racks 30 in multiple rows, the passive module 2 can still move forward for a distance under the driving of the active module 1 after the sample rack 30 in the first row abuts against the limit position in the sample injection device, until the passive module 2 stops after the gaps among all the sample racks 30 are eliminated.

The elastic connecting piece 3 can provide a pulling force when the driving module 1 drives the driven module 2 to normally advance, and can also apply a pushing force to the rear row sample rack 30 through the driven module 2 when the front row sample rack 30 is abutted against a limit position, so that a gap between the front and rear adjacent rows of sample racks 30 is eliminated, the accurate pushing of each row of sample racks 30 can be ensured, and the damage to the front row sample racks 30 can be avoided.

The detection component 5 sends out a prompt signal after the distance that the active module 1 continues to advance exceeds the set value, and the specific meaning of the set value is slightly different in consideration of the specific structure of the detection component 5.

First, the detection assembly 5 includes a mask 51 and an opposite-radiation sensor 52, in this embodiment, the mask 51 is disposed on the passive module 2, and the opposite-radiation sensor 52 is disposed on the active module 1. As shown in fig. 3, during advancement, mask 51 is inserted in correlation sensor 52; as shown in fig. 5, when the passive module 2 reaches the target position, the passive module 2 stops and the active module 1 continues to move forward, the shielding sheet 51 is extracted from the correlation sensor 52, the sensor signal jumps to form a prompt signal, or the signal jumps to be the prompt signal. When mask 51 is normally inserted in correlation sensor 52, the distance between the point on mask 51 aligned with the sensing signal transmitting-receiving structure in correlation sensor 52 and the outer edge of mask 51 is a set value.

Secondly, the detecting component 5 comprises a distance sensor and a sensing piece, one of the distance sensor and the sensing piece is arranged on the active module 1, and the other one is arranged on the passive module 2. The setting value may be customized by the user, and the active module 1 stops moving when the distance sensor detects that the distance of the sensing piece exceeds the setting value.

Thirdly, the detection assembly 5 includes a pressure sensor and a contact, one of which is disposed on the active module 1, and the other of which is disposed on the passive module 2. At this time, the set value is the distance from the time when the active module 1 continues to move forward until the pressure value on the pressure sensor is lower than the pressure value set by the user.

Fourth, the detection assembly 5 includes a reflective sensor and a mask. The reflection sensor is arranged on one of the active module 1 and the passive module 2, the mask can be an independent structure arranged on the other one of the active module 1 and the passive module 2, and the whole other one of the active module 1 and the passive module 2 can be used as the mask and can reflect signals.

When the previous batch of sample racks 30 has not been advanced into position, or the previous batch of sample racks 30 has been advanced into position but the passive module 2 has not returned to the starting point, the next batch of sample racks 30 is usually placed on the tray 20 in advance in order to increase the efficiency of the advancing work. The passive module 2 may collide with the next sample rack 30 during the return process, which may cause the sample rack 30 to tip over or the moving mechanism to jam.

To solve this problem, as shown in fig. 6, the passive module 2 in this embodiment includes a push plate 21, a vertical guide 22, a vertical driving device 23 (e.g., a motor), a base 24, and a transmission assembly. After the previous batch of sample racks 30 has been pushed into place, the active module 1 moves in reverse to drive the passive module 2 to return. At this time, the next batch of sample racks 30 is already placed at the position to be pushed on the tray 20, and the passive module 2 in the return process starts to move downwards when the passive module has not yet reached the next batch of sample racks 30 until the top surface of the passive module 2 is lower than the bottom surface of the next batch of sample racks 30. The passive module 2 continues to return until it is behind the next batch of sample racks 30, and the passive module 2 moves upward to a set height. The active module 1 drives the passive module 2 to move forward through the elastic connecting piece 3 again, and the passive module 2 drives the sample rack 30 to move forward. In fig. 6, the arrow D indicates the direction in which the push plate 21 moves up and down.

Wherein, the transmission assembly may include a lifting plate 25 mounted on the pushing plate 21, a guide block 29 mounted on the lifting plate 25, and a rotating arm 26 connected to the output end of the vertical driving device 23. The lifting plate 25 is provided with a long hole 27, and the end 28 of the rotating arm 26 penetrates through the long hole 27; the guide block 29 is locked on the vertical guide rail 22 and can move up and down along the vertical guide rail 22. When the motor drives the rotating arm 26 to rotate, the end 28 rotates along with the rotating arm 26 and moves linearly along the elongated hole 27, and the lifting plate 25 is driven by the end 28 to move up and down along the vertical guide rail 22, so as to drive the push plate 21 to ascend or descend.

The transmission component can also be a screw rod connected to the vertical driving device 23, and the screw rod is arranged on the push plate 21 in a penetrating way. The inner wall of the screw rod connecting hole on the push plate 21 is provided with threads, and the push plate 21 ascends or descends along with the positive rotation and the reverse rotation of the screw rod.

The transmission assembly may also include a gear and a rack in mesh, one of the gear and the rack being disposed on the push plate 21 and the other on the vertical drive 23. The motor drives the gear to rotate, the gear drives the rack to move up and down, and the push plate 21 arranged on the rack is lifted; or, the rack is fixed, the motor and the gear are both arranged on the push plate 21, the motor drives the gear to rotate, and the gear moves up and down along the rack, so that the push plate 21 is lifted.

The transmission assembly may also include a timing belt and a pulley, one of which is disposed on the push plate 21 and the other of which is disposed on the vertical driving device 23. The motor drives the belt wheel to rotate, and the push plate 21 arranged on the synchronous belt is lifted along with the movement of the synchronous belt; or, the motor drives the synchronous belt to move, the synchronous belt drives the belt wheel to rotate, the push plate 21 arranged on the belt wheel is lifted along with the rotation of the belt wheel, for example, a swing rod is arranged between the push plate 21 and the belt wheel, when the belt wheel rotates, the swing rod is inclined, and the push plate 21 positioned at the end of the swing rod is inclined to lift or descend.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.