CN219302480U - Sample injection device and sample detection assembly line - Google Patents

Abstract

The utility model relates to the field of in-vitro diagnosis automation equipment, in particular to a sample injection device and a sample detection assembly line. The utility model can control the sample feeding speed of the sample rack towards the sample sucking position, and can ensure uninterrupted operation of the sample sucking position and improve the detection efficiency while avoiding excessive sample racks at the sample sucking position.

Description

Sample injection device and sample detection assembly line

Technical Field

The utility model relates to the technical field of in-vitro diagnosis automation equipment, in particular to a sample injection device and a sample detection assembly line.

Background

In the field of the existing in-vitro diagnosis automation equipment, samples are carried by sample frames and are transported to a sample sucking position in batches by a conveying belt for detection and analysis, but when the sample frames entering the sample sucking position are too many, the sample frames which do not enter the sample sucking position at the detection front end are still driven by the conveying belt to be conveyed towards the sample sucking position, so that the sample frames at the sample sucking position are crowded and collide, normal detection and analysis operation of the samples are affected, the sample frames are required to be blocked to move manually or by adopting a baffle plate, the samples at the sample sucking position are detected and released, and the operation mode can lead the released sample frames to not move to the sample sucking position in time, so that the sample sucking position operation is stopped for a period of time, and the detection efficiency is affected.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the defects that the sample rack cannot be moved to the sample suction position in time after being released by the manpower or by adopting a mode that the baffle blocks the movement of the sample rack and the detection efficiency is affected in the prior art, so that the sample injection device and the sample detection assembly line capable of controlling the sample injection speed of the sample rack and ensuring the normal operation of sample detection and analysis are provided.

In order to solve the above problems, the present utility model provides a sample injection device, including: a base; the linear driving mechanism is arranged on the base; the pushing and pulling piece mechanism can be abutted to the sample frame, and the linear driving mechanism is in transmission connection with the pushing and pulling piece mechanism so as to drive the pushing and pulling piece mechanism to move along the length direction of the base.

Optionally, the pushing and pulling piece mechanism includes: the bottom plate is connected with the linear driving mechanism; the plectrum, with the bottom plate rotates to be connected, the plectrum can be relative the bottom plate rotates to first position in order to right the sample frame butt, and the plectrum can be relative the bottom plate rotates to the second position in order to right the sample frame dodges and pass.

Optionally, the pushing and poking piece mechanism further comprises: the rotary connecting plate is rotationally connected with the bottom plate and fixedly connected with the poking piece.

Optionally, the pushing and poking piece mechanism further comprises: the pressing plate is arranged above the rotating connecting plate and connected with the bottom plate, so that the rotating connecting plate is limited between the pressing plate and the bottom plate.

Optionally, the bottom plate is provided with a mounting groove, the rotary connecting plate is rotatably arranged in the mounting groove, and when the plectrum rotates to the first position, the rotary connecting plate is abutted with the side wall of the mounting groove.

Optionally, the pushing and poking piece mechanism further comprises: the elastic reset piece is arranged in the mounting groove, one end of the elastic reset piece is connected with the side wall of the mounting groove, and the other end of the elastic reset piece is connected with the rotating connecting plate or the poking piece.

Optionally, the linear driving mechanism is adapted to drive the pushing and pulling piece mechanism to intermittently move along the length direction of the base, so that the pulling piece is intermittently abutted with the sample rack.

Optionally, the sample feeding device further includes a reset mechanism disposed on the base, where the reset mechanism can be in transmission fit with the pulling piece, so that the pulling piece rotates to the second position.

Optionally, the reset mechanism includes: the fixed seat is arranged on the base, and a fixed shaft is arranged on the fixed seat; and the reset bearing is sleeved on the fixed shaft and can be in running fit with the poking piece.

Optionally, the linear driving mechanism includes: a driving part arranged on the base; the driving belt pulley is rotatably connected to the base and is in transmission connection with the driving part; the driven belt pulley is rotatably connected to the base, and the driven belt pulley and the driving belt pulley are distributed at intervals along the length direction of the base; the driving belt is sleeved on the driving belt wheel and the driven belt wheel, and the driving belt is connected with the bottom plate.

Optionally, the sample injection device further comprises a connecting seat, the bottom of the connecting seat is connected with the driving belt, the top of the connecting seat extends out of the base, and the bottom plate is arranged at the top of the connecting seat.

Optionally, the sample injection device further includes a guiding structure disposed along a length direction of the base, and the connection seat is slidably connected to the guiding structure.

Optionally, the sample injection device further includes: the position detection assembly is arranged on the base and used for detecting the position information of the pushing and pulling piece mechanism; and the controller is in communication connection with the linear driving mechanism and the position detection assembly, and is suitable for controlling the movement direction of the linear driving mechanism according to the position information.

Optionally, the position detection assembly includes: the first detection switch is arranged at one end of the base; the second detection switch is arranged at the other end of the base, and the second detection switch and the first detection switch are both in communication connection with the controller; the detection plate is in transmission connection with the linear driving mechanism, the linear driving mechanism can drive the detection plate to correspond to the first detection switch so that the controller controls the linear driving mechanism to move forward, and the linear driving mechanism can drive the detection plate to correspond to the second detection switch so that the controller controls the linear driving mechanism to move reversely.

The utility model also provides a sample detection assembly line, comprising: the conveying belt is suitable for conveying the sample rack; according to the sample injection device, the sample injection device is arranged on the side face of the conveying belt, and the pushing and pulling piece mechanism can be abutted with the sample frame.

Optionally, the sample detection assembly line is further provided with a sample sucking position, and the sample feeding device is arranged at the sample sucking position, so as to perform butt limit on the sample rack moving towards the sample sucking position.

The utility model has the following advantages:

1. when the sample injection device is used, the pushing and pulling piece mechanism is abutted with the sample rack, and meanwhile, the linear driving mechanism drives the pushing and pulling piece mechanism to move along the length direction of the base, so that the moving sample injection speed of the sample rack is controlled, too many sample racks are prevented from rushing into the sample suction position due to the too high sample injection speed, the sample rack can be kept to move and sample towards the sample suction displacement, the operation of the sample suction position is ensured to be uninterrupted, and the detection efficiency is improved.

2. According to the sample injection device, the pushing and poking piece mechanism comprises the bottom plate and the poking piece, the bottom plate is connected with the linear driving mechanism, the poking piece is rotationally connected with the bottom plate, the poking piece can rotate to a first position relative to the bottom plate to abut against the sample rack, and the poking piece can rotate to a second position relative to the bottom plate to avoid and release the sample rack. Above-mentioned setting, when needs to sample frame butt, stir the plectrum, make plectrum relative bottom plate rotate to first position to make plectrum and sample frame butt spacing, when needs dodge the putting to the sample frame, stir the plectrum, make plectrum relative bottom plate rotate to the second position, thereby make plectrum and sample frame separation, realize dodging the putting.

3. According to the sample injection device, the mounting groove is formed in the bottom plate, the rotary connecting plate is rotatably arranged in the mounting groove, and when the poking piece rotates to the first position, the rotary connecting plate is abutted with the side wall of the mounting groove. The setting of mounting groove for rotate the connecting plate at the mounting groove internal rotation, and when the plectrum rotated to the first position, realize the spacing to the plectrum position through the lateral wall butt of rotating connecting plate and mounting groove, make the plectrum maintain in the first position, improve plectrum and sample frame's butt stability.

4. The sample feeding device of the utility model also comprises a pressing plate which is arranged above the rotary connecting plate and is connected with the bottom plate, the rotary connecting plate is limited between the pressing plate and the bottom plate, so that the vertical movement of the rotary connecting plate in the rotary process is avoided, and the stability of the rotary process is improved.

5. The sample feeding device comprises a sample feeding device body, a sample pushing and pulling piece mechanism, a material pulling and pulling piece mechanism and a material pulling and pulling piece mechanism. According to this setting, when stirring the plectrum and making it drive the rotation connecting plate and rotate to the second position, the elasticity piece that resets is compressed or tensile, when plectrum external force disappears, rotates connecting plate and plectrum under the restoring force of elasticity piece that resets and rotates to the first position and realize resetting, consequently the setting of elasticity piece that resets can make the plectrum can automatic re-setting fast, reduces the operation.

6. According to the sample injection device, the linear driving mechanism is suitable for driving the pushing and poking piece mechanism to intermittently move along the length direction of the base, so that the poking piece is intermittently abutted with the sample frame. When pushing away material plectrum mechanism along the length direction intermittent type nature of base, make plectrum and sample frame butt in order to restrict the sample frame and remove or separate in order that the sample frame removes and advance the appearance (intermittent type nature butt), realize that the sample frame can intermittent type nature/progressive type advance, both avoid advance the sample rate too fast and lead to too much sample frame to gush into the sample absorbing position, can also keep the sample frame to advance towards inhaling the sample displacement and advance, ensure the operation of sample absorbing position incessantly, promote detection efficiency.

7. The linear driving mechanism comprises a driving part, a driving belt wheel, a driven belt wheel and a driving belt, wherein the driving part is arranged on a base, the driving belt wheel is rotatably connected to the base, the driving belt wheel is in transmission connection with the driving part, the driven belt wheel is rotatably connected to the base, the driven belt wheel and the driving belt wheel are distributed at intervals along the length direction of the base, the driving belt wheel and the driven belt wheel are sleeved with the driving belt wheel, and the driving belt is connected with a pushing shifting piece mechanism. When the driving part is started, the driving part drives the driving belt pulley to rotate, the driving belt pulley drives the driving belt and the driven belt pulley to rotate, and the driving belt drives the pushing and pulling piece mechanism to move along the length direction of the base, so that the pushing and pulling piece mechanism is separated from the sample rack to avoid and release the sample rack, and the sample rack can be subjected to movable sample injection; when the driving part does not operate, the pushing and pulling piece mechanism does not move, so that the pushing and pulling piece mechanism is in contact with the sample rack again, limiting blocking of the sample rack is achieved, and progressive or intermittent sample injection of the sample rack is achieved.

8. The sample injection device also comprises a reset mechanism arranged on the base, wherein the reset mechanism can be in transmission fit with the plectrum so as to enable the plectrum to rotate to a first position. When the sample rack needs to be avoided and put, the transmission belt drives the pushing and poking piece mechanism to move to be in abutting fit with the reset mechanism, the poking piece is driven to rotate to a second position through the reset mechanism, sample injection is facilitated for the sample rack, and meanwhile the connecting plate is rotated to compress the elastic reset piece; when the sample frame is required to be blocked and limited again, the transmission belt drives the pushing and poking piece mechanism to move to be separated from the reset mechanism, and the poking piece rotates to the first position under the restoring force of the elastic reset piece to realize reset so as to block and limit the sample frame.

9. The sample injection device also comprises a guide structure arranged along the length direction of the base, and the connecting seat is connected to the guide structure in a sliding manner. When the transmission belt drives the connecting seat to move along the length direction of the base, the connecting seat simultaneously slides on the guide structure, so that the moving accuracy of the pushing and pulling piece mechanism can be ensured, and the guide structure can also support the pushing and pulling piece mechanism, so that the stress of the transmission belt is reduced.

10. The sample injection device further comprises a position detection assembly and a controller, wherein the position detection assembly is arranged on the base and used for detecting the position information of the pushing and pulling piece mechanism, the controller is in communication connection with the linear driving mechanism and the position detection assembly, and the controller is suitable for controlling the movement direction of the linear driving mechanism according to the position information. According to the arrangement, the position detection assembly is used for detecting the position information of the pushing and shifting piece mechanism and feeding back the position information to the controller, the controller can control the movement direction of the linear driving mechanism according to the position information, control over the movement direction of the pushing and shifting piece mechanism is achieved, and finally the accuracy and precision of control over movement of the pushing and shifting piece mechanism are improved.

11. The position detection assembly comprises a first detection switch, a second detection switch and a detection plate, wherein the first detection switch is arranged at one end of a base, the second detection switch is arranged at the other end of the base, the second detection switch and the first detection switch are both in communication connection with a controller, the detection plate is in transmission connection with a linear driving mechanism, the linear driving mechanism can drive the detection plate to correspond to the first detection switch so as to enable the controller to control the linear driving mechanism to move forward, and the linear driving machine component can drive the detection plate to correspond to the second detection switch so as to enable the controller to control the linear driving mechanism to move reversely. According to the arrangement, when the detection plate moves to correspond to the second detection switch in the process that the linear driving mechanism drives the detection plate to move from one end of the base to the other end of the base, the second detection switch transmits detected position information to the controller, and the controller controls the linear driving mechanism to move reversely; in the process that the linear driving mechanism drives the detection plate to move from the other end of the base to one end of the base, when the detection plate moves to correspond to the first detection switch, the first detection switch transmits detected position information to the controller, and the controller controls the linear driving mechanism to move forward, so that the moving direction of the pushing and poking piece mechanism is controlled to be changed, and the use flexibility is high.

12. The sample detection assembly line comprises a conveying belt and the sample injection device, wherein the conveying belt is suitable for conveying a sample frame, the sample injection device is arranged on the side surface of the conveying belt, and the pushing and pulling piece mechanism can be abutted with the sample frame. The sample feeding speed of the sample rack can be controlled, the sample rack can be fed towards the sample sucking position while the sample rack at the sample sucking position is prevented from being too much, the operation of the sample sucking position is ensured to be uninterrupted, and the detection efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic diagram of an overall structure of a sample injection device according to an embodiment of the present utility model;

FIG. 2 shows a top view of a sample injection device according to an embodiment of the present utility model;

fig. 3 shows a schematic diagram of a split structure of a sample injection device according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram showing an exploded structure of a pushing and pulling sheet mechanism according to an embodiment of the present utility model;

fig. 5 shows a schematic structural diagram of a sample detection pipeline according to an embodiment of the present utility model.

Reference numerals illustrate:

1. a base; 2. a linear driving mechanism; 21. a driving section; 22. a driving pulley; 23. a driven pulley; 24. a transmission belt; 3. a pushing and pulling piece mechanism; 31. a bottom plate; 311. a mounting groove; 32. rotating the connecting plate; 33. a pulling piece; 34. a pressing plate; 35. an elastic reset piece; 36. a rotating shaft; 4. a reset mechanism; 41. a fixing seat; 42. a fixed shaft; 43. resetting the bearing; 5. a connecting seat; 6. a guide structure; 7. a position detection assembly; 71. a first detection switch; 72. a second detection switch; 73. a detection plate; 100. a sample rack; 200. and (3) a conveyor belt.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

As shown in fig. 1 to 4, the embodiment discloses a sample injection device, which comprises a base 1, a linear driving mechanism 2 and a pushing and pulling piece mechanism 3, wherein the linear driving mechanism 2 is arranged on the base 1, the pushing and pulling piece mechanism 3 can be abutted with a sample frame 100, and the linear driving mechanism 2 is in transmission connection with the pushing and pulling piece mechanism 3 so as to drive the pushing and pulling piece mechanism 3 to move along the length direction of the base 1.

When the sample injection device of the embodiment is used, the pushing and pulling piece mechanism 3 is abutted to the sample frame 100, and meanwhile, the linear driving mechanism 2 drives the pushing and pulling piece mechanism 3 to move along the length direction of the base 1, so that the moving sample injection speed of the sample frame 100 is controlled, the sample injection speed is prevented from too fast leading too many sample frames 100 to surge into the sample suction position, the sample frame 100 can be kept to move towards the sample suction displacement for sample injection, the operation of the sample suction position is ensured to be uninterrupted, and the detection efficiency is improved.

It can be understood that the sample injection device of this embodiment is applied to the field of biochemical detection, and is used for blocking and limiting the sample rack 100 carrying samples so as to control the sample injection speed, the sample rack 100 is generally transported automatically in batches by the conveyor belt 200, the sample injection device is arranged on one side of the conveyor belt 200 and is located at the sample suction position, the pushing and pulling sheet mechanism 3 is abutted with the sample rack 100, and then the linear driving mechanism 2 drives the pushing and pulling sheet mechanism 3 to move, so that the sample injection speed of the sample rack 100 can be controlled, the sample injection speed of the sample rack 100 on the conveyor belt 200 is buffered, and the orderly sample detection is ensured. Of course, in other embodiments, the sample injection device may be applied to other fields, and the sample injection speed of the incoming material may also be controlled, which is not limited to the present embodiment.

The structure of the sample injection device is described in detail below with reference to the accompanying drawings.

In this embodiment, the base 1 is a rectangular plate, and the rectangular plate is placed transversely. That is, the longitudinal direction of the base 1 coincides with the left-right direction in fig. 1 or 2.

In this embodiment, the linear driving mechanism 2 is intermittently started to drive the pushing and pulling piece mechanism 3 to intermittently move along the length direction of the base, so as to realize intermittent/progressive sample feeding of the sample rack 100.

Specifically, the intermittent start of the linear driving mechanism 2 may be controlled by time or distance, for example, the linear driving mechanism 2 is started for 5 seconds or 4 seconds, and then closed for 5 seconds or 4 seconds, so that the material pushing and pulling piece mechanism 3 can be moved for 5 seconds or 4 seconds, and then stopped for 5 seconds or 4 seconds to realize intermittent movement; distance control, for example, the linear driving mechanism 2 drives the material pushing and pulling piece mechanism 3 to move for 1 meter or 2 meters, then the linear driving mechanism 2 is started again to drive the material pushing and pulling piece mechanism 3 to move for 1 meter or 2 meters, and the operation is performed alternately, so that intermittent movement control of the material pushing and pulling piece mechanism 3 is limited, and the controllability is good.

The linear driving mechanism 2 comprises a driving part 21, a driving belt pulley 22, a driven belt pulley 23 and a driving belt 24, wherein the driving part 21 is arranged on the base 1, the driving belt pulley 22 is rotatably connected to the base 1, the driving belt pulley 22 is in transmission connection with the driving part 21, the driven belt pulley 23 is rotatably connected to the base 1, the driven belt pulley 23 and the driving belt pulley 22 are distributed at intervals along the length direction of the base 1, the driving belt pulley 22 and the driven belt pulley 23 are sleeved with the driving belt pulley 24, and the driving belt 24 is connected with the pushing shifting sheet mechanism 3. When the driving part 21 is started, the driving part 21 drives the driving belt pulley 22 to rotate, the driving belt pulley 22 drives the driving belt 24 and the driven belt pulley 23 to rotate, and the driving belt 24 drives the pushing and pulling piece mechanism 3 to move along the length direction of the base 1, so that the pushing and pulling piece mechanism 3 is separated from the sample rack 100 to avoid and release the sample rack 100, and the sample rack 100 can move for sample injection; when the driving part 21 does not operate, the pushing and pulling piece mechanism 3 does not move, so that the pushing and pulling piece mechanism 3 is in contact with the sample rack 100 again, limiting and blocking of the sample rack 100 are achieved, and progressive/intermittent sample injection of the sample rack 100 is achieved.

Specifically, the driving portion 21 is a driving motor, and the driving motor is preferably a forward and reverse motor, so that the rotation direction of the driving belt 24 can be changed, and the movement direction of the pushing and pulling sheet mechanism 3 can be controlled, so that the pushing and pulling sheet mechanism 3 can reciprocate along the length direction of the base 1. The driving pulley 22 and the driven pulley 23 are provided at both right and left ends of the base 1, respectively.

In this embodiment, the pushing and pulling piece mechanism 3 includes a bottom plate 31 and a pulling piece 33, wherein the bottom plate 31 is connected with the linear driving mechanism 2, the pulling piece 33 is rotationally connected with the bottom plate 31, the pulling piece 33 can rotate to a first position relative to the bottom plate 31 to abut against the sample rack 100, and the pulling piece 33 can rotate to a second position relative to the bottom plate 31 to avoid and release the sample rack 100.

Above-mentioned setting, when needs butt to sample frame 100, stir plectrum 33, make plectrum 33 relative bottom plate 31 orientation first position rotate to make plectrum 33 rotate to first position in order to spacing with sample frame 100 butt, when needs dodge the putting to sample frame 100, stir plectrum 33, make plectrum 33 relative bottom plate 31 orientation second position rotate, thereby make plectrum 33 rotate to the second position in order to separate with sample frame 100, realize dodging the putting.

Further, the pushing and pulling piece mechanism 3 further includes a rotating connection plate 32, the rotating connection plate 32 is rotationally connected with the bottom plate 31, and the rotating connection plate 32 is fixedly connected with the pulling piece 33, so that the pulling piece 33 is driven to rotate to the first position or the second position through the rotation of the rotating connection plate 32 relative to the bottom plate 31.

The bottom plate 31 is connected to the belt 24 to be moved by the belt 24. Further, the bottom plate 31 is provided with a mounting groove 311, the rotary connecting plate 32 is rotatably disposed in the mounting groove 311, and when the paddle 33 rotates to the first position, the rotary connecting plate 32 abuts against a side wall of the mounting groove 311. The setting of mounting groove 311 for rotating connecting plate 32 rotates in mounting groove 311, and when plectrum 33 rotated to the first position, realizes the spacing to plectrum 33 position through the lateral wall butt of rotating connecting plate 32 and mounting groove 311, makes plectrum 33 maintain in the first position, improves plectrum 33 and sample frame 100's butt stability.

Specifically, the mounting groove 311 has an opening toward the second position to facilitate rotation of the rotary connecting plate 32 along the opening, so that the paddle 33 rotates to the second position. The mounting groove 311 is provided with a side wall toward the first position, and the side wall can be limited by abutting against the rotating connection plate 32 when the plectrum 33 rotates to the first position, so that the plectrum 33 is prevented from rotating when abutting against the sample holder 100.

The pushing and pulling piece mechanism 3 further comprises a rotating shaft 36, and the rotating shaft 36 is connected with the rotating plate and the bottom plate 31, so that the rotating plate rotates around the rotating shaft 36.

In addition, the pushing and poking piece mechanism 3 of the embodiment further comprises a pressing plate 34, the pressing plate 34 is arranged above the rotating connecting plate 32, the pressing plate 34 is connected with the bottom plate 31, so that the rotating connecting plate 32 is limited between the pressing plate 34 and the bottom plate 31, the vertical movement of the rotating connecting plate 32 in the rotating process is avoided, and the stability of the rotating process is improved.

The pushing and pulling piece mechanism 3 further comprises an elastic reset piece 35, the elastic reset piece 35 is arranged in the mounting groove 311, one end of the elastic reset piece 35 is connected with the side wall of the mounting groove 311, and the other end of the elastic reset piece 35 is connected with the rotating connecting plate 32 or the pulling piece 33. According to this setting, when stirring plectrum 33 makes it drive rotate connecting plate 32 rotate to the second position, and elasticity reset piece 35 is compressed or tensile, and when plectrum 33 external force disappears, rotate connecting plate 32 and plectrum 33 under elasticity reset piece 35's restoring force and rotate to the first position and realize the reset, therefore elasticity reset piece 35's setting can make plectrum 33 can quick automatic re-setting, reduces the operation.

In this embodiment, the other end of the elastic restoring member 35 is connected to the rotating connecting plate 32, the elastic restoring member 35 and the pulling piece 33 are respectively disposed on two sides of the rotating shaft 36, and when the pulling piece 33 drives the rotating connecting plate 32 to rotate to the second position, the elastic restoring member 35 is compressed by the rotating connecting plate 32. Specifically, the elastic restoring member 35 may be a spring or a shrapnel.

In this embodiment, the sample injection device further includes a reset mechanism 4 disposed on the base 1, where the reset mechanism 4 can be in transmission fit with the paddle 33, so that the paddle 33 rotates to the second position. When the sample rack 100 needs to be avoided and put, the transmission belt 24 drives the pushing and poking piece mechanism 3 to move to be in abutting fit with the reset mechanism 4, the poking piece 33 is driven to rotate to the second position through the reset mechanism 4, the sample rack 100 is convenient to sample through sample injection, and meanwhile the connecting plate 32 is rotated to compress the elastic reset piece 35; when the sample rack 100 needs to be blocked and limited again, the driving belt 24 drives the pushing and pulling piece mechanism 3 to move to be separated from the reset mechanism 4, and the pulling piece 33 rotates to the first position under the restoring force of the elastic reset piece 35 to realize reset so as to block and limit the sample rack 100.

In the present embodiment, the return mechanism 4 is provided near one end of the driven pulley 23 in terms of the set position. When the driving belt 24 drives the pushing and pulling piece mechanism 3 to move from one end of the driving belt pulley 22 to one end of the driven belt pulley 23, the pulling piece 33 is located at a first position to be abutted and limited to the sample frame 100, progressive sample injection is achieved, stability is guaranteed due to the fact that the side wall of the mounting groove 311 is limited and limited to the pulling piece 33 in the process, when the pushing and pulling piece mechanism 3 moves to be abutted to the reset mechanism 4, the reset mechanism 4 drives the pulling piece 33 to rotate to a second position to achieve avoiding and releasing of the sample frame 100, the sample frame 100 passes through, when the pushing and pulling piece mechanism 3 needs to be reset to move to one end of the driving belt pulley 22, the driving belt 24 drives the pushing and pulling piece mechanism 3 to move from one end of the driven belt pulley 23 to one end of the driving belt pulley 22, the pulling piece 33 is separated from the reset mechanism 4, the pulling piece 33 is driven by the elastic reset piece 35 to be turned to the first position, reset of the pushing and pulling piece mechanism 3 is achieved, and preparation is made for progressive sample injection of the next round.

With respect to the specific structure of the reset mechanism 4, in this embodiment, the reset mechanism 4 includes a fixing base 41 and a reset bearing 43, where the fixing base 41 is disposed on the base 1, a fixed shaft 42 is disposed on the fixing base 41, the reset bearing 43 is sleeved on the fixed shaft 42, and the reset bearing 43 can be in running fit with the paddle 33. The reset bearing 43 is in running fit with the shifting piece 33, so that the rotating of the shifting piece 33 to the second position is realized, and meanwhile, the abrasion between the reset bearing 43 and the pushing shifting piece mechanism 3 is reduced through running fit, and the service life of the structure is ensured.

It can be understood that the sample injection device of this embodiment further includes a connecting seat 5, the bottom of the connecting seat 5 is connected with the driving belt 24, the top of the connecting seat 5 extends out of the base 1, and the bottom plate 31 is disposed at the top of the connecting seat 5. The setting of connecting seat 5 has realized pushing away material plectrum mechanism 3 and drive belt 24's connection, and structural stability is good.

Further, the sample injection device further comprises a guiding structure 6 arranged along the length direction of the base 1, and the connecting seat 5 is slidably connected to the guiding structure 6. When the transmission belt 24 drives the connecting seat 5 to move along the length direction of the base 1, the connecting seat 5 simultaneously slides on the guide structure 6, so that the moving accuracy of the pushing and pulling piece mechanism 3 can be ensured, and meanwhile, the guide structure 6 can also support the pushing and pulling piece mechanism 3, and the stress of the transmission belt 24 is reduced.

In this embodiment, the guiding structure 6 is a guide rail, and the connection seat 5 is slidably mounted on the guide rail. In order to avoid the connecting seat 5 to slide out of the guide rail, the two ends of the guide rail are provided with limiting columns, and the limiting columns can be abutted with the connecting seat 5 so as to avoid the connecting seat 5 to slide out of the guide rail and improve the use safety.

It can be understood that the sample injection device further comprises a position detection assembly 7 and a controller, wherein the position detection assembly 7 is arranged on the base 1 and is used for detecting the position information of the pushing and pulling piece mechanism 3, the controller is in communication connection with the linear driving mechanism 2 and the position detection assembly 7, and the controller is suitable for controlling the movement direction of the linear driving mechanism 2 according to the position information.

The above arrangement detects the position information of the pushing and pulling piece mechanism 3 through the position detection assembly 7, and feeds back the position information to the controller, the controller can control the movement direction of the linear driving mechanism 2 according to the position information, so as to control the movement direction of the pushing and pulling piece mechanism 3, and finally improve the accuracy and precision of controlling the movement of the pushing and pulling piece mechanism 3.

Specifically, the position detecting assembly 7 includes a first detecting switch 71, a second detecting switch 72 and a detecting plate 73, where the first detecting switch 71 is disposed at one end of the base 1, the second detecting switch 72 is disposed at the other end of the base 1, the second detecting switch 72 and the first detecting switch 71 are all connected with the controller in a communication manner, the detecting plate 73 is connected with the linear driving mechanism 2 in a transmission manner, the linear driving mechanism 2 can drive the detecting plate 73 to correspond to the first detecting switch 71 so that the controller controls the linear driving mechanism 2 to move forward, and the linear driving mechanism 2 can drive the detecting plate 73 to correspond to the second detecting switch 72 so that the controller controls the linear driving mechanism 2 to move reversely.

In this arrangement, when the detection plate 73 moves to correspond to the second detection switch 72 in the process that the linear driving mechanism 2 drives the detection plate 73 to move from one end of the base 1 to the other end of the base 1, the second detection switch 72 transmits the detected position information to the controller, and the controller controls the linear driving mechanism 2 to move reversely; in the process that the linear driving mechanism 2 drives the detection plate 73 to move from the other end of the base 1 to one end of the base 1, when the detection plate 73 moves to correspond to the first detection switch 71, the first detection switch 71 transmits detected position information to the controller, and the controller controls the linear driving mechanism 2 to move forward, so that the moving direction of the pushing and pulling piece mechanism 3 is controlled to be changed, and the use flexibility is high.

Here, one end of the base 1 is a left end in fig. 1 or 2, and the other end of the base 1 is a right end in fig. 1 or 2.

In this embodiment, the first detection switch 71 is disposed near the driving pulley 22, the first detection switch 71 is disposed near the driven pulley 23, the detection plate 73 is in transmission connection with the transmission belt 24, and the controller is in communication connection with the driving portion 21. In the process that the driving part 21 drives the driving belt 24 to drive the detection plate 73 to move from the driving belt pulley 22 to the driven belt pulley 23, when the detection plate 73 corresponds to the second detection switch 72, the second detection switch 72 transmits detected position information to the controller, the controller controls the driving part 21 to rotate reversely, so that the driving belt 24 rotates reversely to drive the detection plate 73 to move from the driven belt pulley 23 to the driving belt pulley 22, when the detection plate 73 corresponds to the first detection switch 71, the first detection switch 71 transmits detected position information to the controller, and the controller controls the driving part 21 to rotate positively, so that the driving belt 24 rotates reversely again to drive the detection plate 73 to move from the driving belt pulley 22 to the driven belt pulley 23.

In this embodiment, the detecting plate 73 is connected and fixed with the driving belt 24 through the connecting seat 5. So that the driving belt 24 drives the pushing and pulling piece mechanism 3 and the detecting plate 73 to synchronously move in the same direction, namely, when the detecting plate 73 corresponds to the first detecting switch 71, the first detecting switch 71 detects that the pushing and pulling piece mechanism 3 moves to the side of the driving pulley 22, and when the detecting plate 73 corresponds to the second detecting switch 72, the second detecting switch 72 detects that the pushing and pulling piece mechanism 3 moves to the side of the driven pulley 23.

Illustratively, the first detection switch 71 and the second detection switch 72 are both detection optocouplers.

In order to facilitate understanding of the sample injection device of this embodiment, the following description will be given to the action process of the sample injection device:

the stirring sheet 33 is positioned at the first position, the position of the stirring sheet 33 is limited by abutting the rotating connecting plate 32 with the side wall of the mounting groove 311, when the driving part 21 does not operate, the pushing stirring sheet mechanism 3 does not move, so that the stirring sheet 33 abuts against the sample rack 100, limiting blocking of the sample rack 100 is realized, when the driving part 21 starts, the driving part 21 drives the driving belt pulley 22 to rotate, the driving belt pulley 22 drives the driving belt 24 and the driven belt pulley 23 to rotate, the driving belt 24 drives the pushing stirring sheet mechanism 3 and the detection plate 73 to move along one end of the driving belt pulley 22 to one end of the driven belt pulley 23, so that the stirring sheet 33 is separated from the sample rack 100, the sample rack 100 moves for sample feeding under the driving of the conveying belt 200, and progressive or intermittent sample feeding of the sample rack 100 is realized by controlling the driving part 21 to operate intermittently;

when the pushing and pulling piece mechanism 3 moves to the end of the driven belt wheel 23 to be in abutting fit with the reset mechanism 4, the reset bearing 43 extrudes and pushes the pulling piece 33 and the rotating connecting plate 32 to rotate to a second position relative to the bottom plate 31, so that the pulling piece 33 is far away from the sample rack 100 to rotate, avoiding and releasing of the sample rack 100 are realized, the sample rack 100 can be driven by the conveying belt 200 to move and sample in the process, the elastic reset piece 35 is compressed, when the detection plate 73 corresponds to the second detection switch 72, the controller controls the driving part 21 to reversely rotate, so that the driving belt 24 reversely rotates, the detection plate 73 and the pulling piece 33 are driven to move from the end of the driven belt wheel 23 to the end of the driving belt wheel 22 together, the pulling piece 33 is separated from the reset bearing 43, the pulling piece 33 is driven by the elastic reset piece 35 to rotate to a first position until the rotating connecting plate 32 abuts against the side wall of the mounting groove 311, and the pulling piece 33 can abut against the sample rack 100 on the inner side of the base 1;

when the detection plate 73 corresponds to the first detection switch 71, it indicates that the pushing and pulling mechanism 3 has moved to return to the original position, and the controller controls the driving portion 21 to rotate forward, so that the progressive sample feeding of the new sample rack 100 can be started.

Of course, the above-mentioned forward or reverse rotation is the opposite two rotation directions, i.e., counterclockwise or clockwise, and the present embodiment is not particularly limited.

As shown in fig. 2, the example of the paddle 33 in the solid line position and the paddle 33 in the broken line position will be described, and the first position in this embodiment is the position of the paddle 33 shown in the solid line in fig. 2, and the second position is the position of the paddle 33 shown in the broken line in fig. 2.

As shown in fig. 5, the embodiment further discloses a sample detection assembly line, which includes a conveying belt 200 and the sample injection device of the embodiment, wherein the conveying belt 200 is suitable for conveying the sample rack 100, the sample injection device is disposed on a side surface of the conveying belt 200, and the pushing and pulling piece mechanism 3 can be abutted to the sample rack 100. The sample detection assembly line of this embodiment can control sample frame 100 sample rate, realizes avoiding inhaling the sample position sample frame 100 too much, can also make sample frame 100 advance towards inhaling the sample position, ensures that the operation of inhaling the sample position is incessant, promotes detection efficiency.

In this embodiment, two conveyor belts 200 are provided, corresponding to the emergency channel and the general channel respectively, so as to meet different detection requirements. Correspondingly, two sample feeding devices are also arranged and are respectively arranged on the side surfaces of the two conveying belts 200 so as to carry out abutting limiting on the sample rack 100 transmitted on the two conveying belts 200.

Further, sample detection assembly line still is provided with and inhales the appearance position, sampling device sets up in inhaling the appearance position, with block spacing towards inhaling the sample frame 100 that appearance displacement moved, control front end sample frame 100 gets into the sampling speed of inhaling the appearance position, make sample frame 100 remove in order and advance to inhaling the appearance position, inhale appearance device (like the sampling needle), can absorb the sample in the sample frame 100 of sampling device butt, sampling device has sample frame 100 progressive function, inhale appearance device (like the sampling needle) and inhale the appearance device and have been inhaled one sample at every turn and be convenient for inhale the appearance device and continue the sample by sampling device automatic progressive to next sample, both avoid inhaling appearance position sample frame 100 too much, guarantee again that inhale the orderly of appearance position detection operation goes on.

In other embodiments, the intermittent movement may be understood as a variable speed movement (i.e., an alternating movement of speed) of the driving portion 21, and when the driving portion 21 moves slowly, the pushing and pulling mechanism 3 abuts against the sample rack 100 to limit, and when the driving portion 21 moves rapidly, the pushing and pulling mechanism 3 dodges the sample rack 100.

It can be understood that the above descriptions are all the optimal technical solutions of the present embodiment, and in addition:

in some embodiments, the linear driving mechanism 2 includes a driving portion 21, a driving sprocket, a driven sprocket and a transmission chain, the driving portion 21 is disposed on the base 1, the driving sprocket and the driven sprocket are both rotatably disposed on the base 1, the driving sprocket is in transmission connection with the driving portion 21, the transmission chain is sleeved on the driving sprocket and the driven sprocket, and the transmission chain is connected with the pushing and pulling piece mechanism 3 and can also drive the pushing and pulling piece mechanism 3 to move.

In some embodiments, the linear driving mechanism 2 includes a driving portion 21, a gear and a rack, where the driving portion 21 is disposed on the base 1, the gear is in transmission connection with the driving portion 21, the rack is movably disposed on the base 1, the rack is meshed with the gear, and the rack is connected with the pushing and pulling piece mechanism 3 and can also drive the pushing and pulling piece mechanism 3 to move.

In some embodiments, the linear driving mechanism 2 comprises a motor and a screw, the motor drives the screw to rotate, the screw is in threaded connection with the pushing and pulling piece mechanism 3, and the pushing and pulling piece mechanism 3 can be driven to move along the axial direction of the screw through the rotation of the screw.

In some embodiments, the other end of the elastic restoring member 35 is connected to the pulling piece 33, and when the pulling piece 33 drives the rotating connecting plate 32 to rotate to the second position, the elastic restoring member 35 is stretched or compressed by the pulling piece 33.

In some embodiments, the elastic restoring member 35 and the pulling piece 33 are disposed on the same side of the rotating shaft 36, and when the pulling piece 33 drives the rotating connecting plate 32 to rotate to the second position, the elastic restoring member 35 is stretched.

In some embodiments, the reset bearing 43 may also be replaced with a roller that is in rolling engagement with the paddle 33.

In some embodiments, the guiding structure 6 is a guiding rod, and the connecting seat 5 is slidably sleeved on the guiding rod, so that the moving guiding of the connecting seat 5 can be realized.

In some embodiments, the detecting plate 73 and the connecting seat 5 are respectively connected to two sides of the movement direction of the driving belt 24. That is, the detection plate 73 and the pushing and pulling piece mechanism 3 are driven by the transmission belt 24 to move in opposite directions, when the detection plate 73 corresponds to the first detection switch 71, the first detection switch 71 detects that the pushing and pulling piece mechanism 3 moves to one end of the driven pulley 23, and when the detection plate 73 corresponds to the second detection switch 72, the second detection switch 72 detects that the pushing and pulling piece mechanism 3 moves to one end of the driving pulley 22.

In some embodiments, the first detection switch 71 and the second detection switch 72 are provided as photosensors or proximity switches or the like.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (16)

1. A sample injection apparatus, comprising:

a base (1);

the linear driving mechanism (2) is arranged on the base (1);

the pushing and poking mechanism (3) can be abutted to the sample frame (100), and the linear driving mechanism (2) is in transmission connection with the pushing and poking mechanism (3) so as to drive the pushing and poking mechanism (3) to move along the length direction of the base (1).

2. The sample introduction device according to claim 1, characterized in that the pushing paddle mechanism (3) comprises:

a bottom plate (31) connected to the linear driving mechanism (2);

the poking piece (33) is rotationally connected with the bottom plate (31), the poking piece (33) can rotate to a first position relative to the bottom plate (31) so as to be abutted against the sample rack (100), and the poking piece (33) can rotate to a second position relative to the bottom plate (31) so as to avoid and release the sample rack (100).

3. The sample introduction device of claim 2, wherein the pushing paddle mechanism (3) further comprises:

the rotating connecting plate (32) is rotationally connected with the bottom plate (31), and the rotating connecting plate (32) is fixedly connected with the poking piece (33).

4. A sample injection device according to claim 3, wherein the pushing paddle mechanism (3) further comprises:

and the pressing plate (34) is arranged above the rotating connecting plate (32), and the pressing plate (34) is connected with the bottom plate (31) so as to limit the rotating connecting plate (32) between the pressing plate (34) and the bottom plate (31).

5. The sample introduction device according to claim 3, wherein the bottom plate (31) is provided with a mounting groove (311), the rotary connecting plate (32) is rotatably arranged in the mounting groove (311), and when the plectrum (33) rotates to the first position, the rotary connecting plate (32) is abutted with the side wall of the mounting groove (311).

6. The sample introduction device of claim 5 wherein the pushing paddle mechanism (3) further comprises:

the elastic reset piece (35) is arranged in the mounting groove (311), one end of the elastic reset piece (35) is connected with the side wall of the mounting groove (311), and the other end of the elastic reset piece (35) is connected with the rotating connecting plate (32) or the poking piece (33).

7. The sample introduction device of any one of claims 2 to 6 wherein the linear drive mechanism (2) is adapted to drive the pushing paddle mechanism (3) intermittently along the length of the base (1) to bring the paddle (33) into intermittent abutment with the sample holder (100).

8. The sample introduction device as claimed in any one of claims 2 to 6 further comprising a reset mechanism (4) disposed on the base (1), the reset mechanism (4) being capable of driving engagement with the paddle (33) to rotate the paddle (33) to the second position.

9. The sample introduction device of claim 8, wherein the reset mechanism (4) comprises:

the fixed seat (41) is arranged on the base (1), and a fixed shaft (42) is arranged on the fixed seat (41);

and the reset bearing (43) is sleeved on the fixed shaft (42), and the reset bearing (43) can be in running fit with the poking piece (33).

10. The sample introduction device as claimed in any one of claims 2 to 6, wherein the linear drive mechanism (2) comprises:

a driving unit (21) provided on the base (1);

a driving pulley (22) rotatably connected to the base (1), the driving pulley (22) being in transmission connection with the driving part (21);

a driven pulley (23) rotatably connected to the base (1), wherein the driven pulley (23) and the driving pulley (22) are distributed at intervals along the length direction of the base (1);

and the driving belt (24) is sleeved on the driving belt wheel (22) and the driven belt wheel (23), and the driving belt (24) is connected with the bottom plate (31).

11. The sample introduction device of claim 10, further comprising a connecting seat (5), wherein the bottom of the connecting seat (5) is connected with the driving belt (24), the top of the connecting seat (5) extends out of the base (1), and the bottom plate (31) is arranged at the top of the connecting seat (5).

12. The sample introduction device as claimed in claim 11 further comprising a guide structure (6) disposed along the length of the base (1), the connector (5) being slidably coupled to the guide structure (6).

13. The sample introduction device of any one of claims 1 to 6, further comprising:

the position detection assembly (7) is arranged on the base (1) and is used for detecting the position information of the pushing and pulling piece mechanism (3);

and the controller is in communication connection with both the linear driving mechanism (2) and the position detection assembly (7), and is suitable for controlling the movement direction of the linear driving mechanism (2) according to the position information.

14. The sample introduction device of claim 13 wherein the position detection assembly (7) comprises:

a first detection switch (71) provided at one end of the base (1);

the second detection switch (72) is arranged at the other end of the base (1), and the second detection switch (72) and the first detection switch (71) are both in communication connection with the controller;

the detection plate (73) is in transmission connection with the linear driving mechanism (2), the linear driving mechanism (2) can drive the detection plate (73) to correspond to the first detection switch (71) so that the controller can control the linear driving mechanism (2) to move forwards, and the linear driving mechanism (2) can drive the detection plate (73) to correspond to the second detection switch (72) so that the controller can control the linear driving mechanism (2) to move backwards.

15. A sample detection pipeline, comprising:

a conveyor belt (200) adapted to convey the sample rack (100);

the sample introduction device of any one of claims 1 to 13, which is arranged on a side of the conveyor belt (200), the pushing paddle mechanism (3) being capable of abutting the sample rack (100).

16. The sample detection pipeline according to claim 15, further comprising a sample suction position, wherein the sample introduction device is disposed at the sample suction position to perform abutment limiting on the sample rack (100) moving toward the sample suction position.

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