阅读说明：本技术 一种脱帽机构 (Uncapping mechanism ) 是由 韩奎亮 周史良 张海洋 于 2020-07-01 设计创作，主要内容包括：本申请涉及一种脱帽机构,其包括固定架,固定架上固定有第一驱动电机,第一驱动电机的输出轴上固定有传动杆,传动杆竖直设置,传动杆上通过连接板滑动连接有将样本管、管盖夹紧的夹紧机构以及将管盖盖回样本管上的顶盖机构,顶盖机构顶端通过连接件固定有第二驱动电机,夹紧机构包括管体夹紧件和管盖夹紧件,管盖夹紧件与顶盖机构固定相连,管体夹紧件与管盖夹紧件转动连接,连接件可带动顶盖机构竖直上下运动。本申请具有只需要一个驱动电机带动就可实现将管帽从管体上脱去以及将管帽盖回管体的效果。(The utility model relates to a uncapping mechanism, which comprises a fixed frame, be fixed with first driving motor on the mount, be fixed with the transfer line on first driving motor's the output shaft, the vertical setting of transfer line, there is the sample pipe through connecting plate sliding connection on the transfer line, the tight clamping mechanism of tube cap clamp and with the tube cap lid back to the top cap mechanism on the sample pipe, top cap mechanism top is fixed with second driving motor through the connecting piece, clamping mechanism includes body clamping piece and tube cap clamping piece, the tube cap clamping piece links to each other with top cap mechanism is fixed, the body clamping piece rotates with the tube cap clamping piece to be connected, the connecting piece can drive the vertical up-and-down motion of top cap mechanism. This application has only needs a driving motor to drive just can realize taking off the pipe cap from the body and returning the effect of body with the pipe cap lid.)

1. The utility model provides a uncapping mechanism, includes mount (1), is fixed with first driving motor (2) on mount (1), is fixed with transfer line (21) on the output shaft of first driving motor (2), and transfer line (21) vertical setting, its characterized in that: the sample tube clamping mechanism is characterized in that a clamping mechanism (5) for clamping a sample tube (9) and a top cover mechanism (6) for covering a tube cover (92) on the sample tube (9) are connected to the transmission rod (21) in a sliding mode through a connecting plate (3), a second driving motor (7) is fixed to the top end of the top cover mechanism (6) through a connecting piece (8), the clamping mechanism (5) comprises a tube body clamping piece (52) and a tube cover clamping piece (51), the tube cover clamping piece (51) is fixedly connected with the top cover mechanism (6), the tube body clamping piece (52) is rotatably connected with the tube cover clamping piece (51), and the connecting piece (8) can drive the top cover mechanism (6) to vertically move up and down.

2. The uncapping mechanism of claim 1, wherein: the top cover mechanism (6) comprises a fixed block (61) and a top column (62), the top end of the fixed block (61) is fixedly connected with the connecting piece (8), the bottom end of the fixed block (61) is connected with the top column (62), and the diameter of the top column (62) is larger than that of the pipe cover (92).

3. The uncapping mechanism of claim 2, wherein: the pipe cover clamping piece (51) comprises clamping pieces (511) which are arranged oppositely, the clamping pieces (511) are arranged on two sides of the opposite side walls of the fixed block (61) oppositely, one end of each clamping piece (511) is hinged and fixed with the fixed block (61) through a limiting bearing (514), the other end of each clamping piece (511) vertically extends downwards, a limiting sleeve (513) is sleeved on the outer sides of the fixed block (61) and the clamping piece (511), the limiting sleeve (513) is fixedly connected with the sliding plate (82), the bottom end of each clamping piece (511) extends out of the bottom end of the limiting sleeve (513), limiting grooves (5131) are formed in the positions, opposite to the limiting bearing (514), of the fixed clamping piece (511), of the front side wall and the back side wall of the limiting sleeve (513), the limiting grooves (5131) formed in the front side wall and the back side wall of the limiting sleeve (513) are two, each limiting groove (5131) comprises a vertical groove (51311, the bottom end of the vertical groove (51311) is communicated with the inclined groove (51312), the width between the vertical grooves (51311) is the same as the diameter of the pipe cover (92), the two limiting grooves (5131) are oppositely arranged in a splayed shape, and the limiting bearing (514) is clamped in the limiting groove (5131).

4. The uncapping mechanism of claim 3, wherein: the bottom end of the clamping piece (511) is fixed with a clamping piece (5111), and the clamping piece (511) is vertically extended out horizontally from the clamping piece (5111).

5. The uncapping mechanism of claim 3, wherein: the pipe clamping piece (52) comprises clamping pieces (521) and tightening pieces (522) which are arranged oppositely, the top ends of the clamping pieces (521) are rotatably connected with the limiting sleeve (513), each clamping piece (521) is arranged oppositely to one clamping piece (511), the clamping pieces (521) are located on the outer sides of the clamping pieces (511), the bottom ends of the clamping pieces (521) are lower than the bottom ends of the clamping pieces (511), and the tightening pieces (522) are fixed between the clamping pieces (521) which are arranged oppositely.

6. The uncapping mechanism of claim 5, wherein: seted up breach (5132) on the lateral wall that stop collar (513) and clamping piece (521) are relative, clamping piece (521) are fixed with second stationary blade (525) towards one side of breach (5132), second stationary blade (525) stretch into in breach (5132), run through second stationary blade (525) and link to each other with stop collar (513) lateral wall is fixed through second pivot (526), the cover is equipped with second bearing (5261) on second pivot (526), second bearing (5261) link to each other with second pivot (526) is fixed, second bearing (5261) and clamp piece (511) looks butt.

7. The uncapping mechanism of claim 6, wherein: one side of clamping piece (521) towards breach (5132) still is fixed with first stationary blade (523) along clamping piece (521) length direction, first stationary blade (523) are located second stationary blade (525) top, run through first stationary blade (523) through first pivot (524) and rotate with stop collar (513) lateral wall and link to each other, one side that first stationary blade (523) deviate from clamping piece (521) is relative with transmission pipe (83) lateral wall, still overlap respectively on first pivot (524) and be equipped with first bearing (5241), first bearing (5241) are fixed continuous with first pivot (524) that correspond, first bearing (5241) are relative with transmission pipe (83) lateral wall, the top position of the lateral wall of clamping piece (511) is the inclined plane (51112) setting of downward sloping, inclined plane (51112) are along the length direction of clamping piece (511) to the direction slope of keeping away from fixed block (61).

8. The uncapping mechanism of claim 4, wherein: the opposite side walls of the card (5111) are curved.

9. The uncapping mechanism of claim 5, wherein: the clamping piece (521) is L-shaped, the clamping piece (521) comprises a vertical piece (5211) and a horizontal piece (5212), the vertical piece (5211) is rotatably connected with the limiting sleeve (513), the bottom end of the vertical piece (5211) is fixed with the horizontal piece (5212), and the horizontal piece (5212) horizontally extends towards the direction close to each other.

10. The uncapping mechanism of claim 5, wherein: the tightening piece (522) comprises a bolt (5221) and a spring (5222) which are respectively fixed on the side walls of the clamping pieces (521) which are oppositely arranged, the bolt (5221) is oppositely arranged and located at the same horizontal height, and two ends of the spring (5222) are respectively hooked on the bolt (5221).

Technical Field

The application relates to the technical field of medical instruments, in particular to a cap removing mechanism.

Background

At present, a medical blood collection tube is usually a vacuum blood collection tube, and the blood collection function is realized through negative pressure. In the process of analyzing a blood sample by a clinical testing instrument, a test tube cap is generally removed in advance, and a needle is adopted for blood sample extraction. Before carrying out the blood sample and drawing promptly, need the manual work to remove the test-tube cap in advance, still need cover the reagent pipe with the tube cap at experimental completion, the operation is inconvenient, reduces work efficiency and medical staff's risk of bacterial infection relatively higher.

The existing uncapping mechanism needs to uncap and cap the blood sampling tube frequently, wherein the uncapping mechanism generally drives three actions of rotating, lifting and grabbing a test tube cap to be finished by three motors respectively, and each action has a relevant inductive switch to judge the position, so that the structure is complex, and the manufacturing cost is high.

Disclosure of Invention

To the not enough of prior art existence, one of the purpose of this application is to provide one kind only need a driving motor to drive just can realize taking off the pipe cap from the body and covering the uncapping mechanism of body back with the pipe cap.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a uncapping mechanism, which comprises a fixed frame, be fixed with first driving motor on the mount, be fixed with the transfer line on first driving motor's the output shaft, the vertical setting of transfer line, there is the sample pipe through connecting plate sliding connection on the transfer line, the tight clamping mechanism of tube cap clamp and with the tube cap lid back top cap mechanism on the sample pipe, top cap mechanism top is fixed with second driving motor through the connecting piece, clamping mechanism includes body clamping piece and tube cap clamping piece, the tube cap clamping piece links to each other with top cap mechanism is fixed, the body clamping piece rotates with the tube cap clamping piece to be connected, the connecting piece can drive the vertical up-and-down motion of top cap mechanism.

Through adopting the above technical scheme, first driving motor drives the transfer line and rotates, and then drive the connecting plate and with connecting plate fixed connection's clamping mechanism and top cap mechanism along vertical direction up-and-down motion, thereby be convenient for make clamping mechanism move down to the position that is close to the sample pipe, start second driving motor, drive the vertical downstream of top cap mechanism, and then drive the tube cap clamping piece downstream that links to each other with top cap mechanism and press from both sides tight tube cap, it fixes the body to drive the tube cap clamping piece of being connected with the tube cap clamping piece rotation simultaneously, drive the vertical upward movement of tube cap clamping piece through second driving motor, break away from the tube cap from the body, after the operation is accomplished, drive the vertical downstream of top cap mechanism again, return the tube cap to the body, whole operation process only needs two driving motor can accomplish.

The present application may be further configured in a preferred example to: the top cap mechanism comprises a fixed block and a top post, the top end of the fixed block is fixedly connected with the connecting piece, the bottom end of the fixed block is connected with the top post, and the diameter of the top post is larger than that of the pipe cover.

Through adopting above-mentioned technical scheme, through the cooperation setting of fixed block and fore-set, the fixed clamping mechanism of being convenient for on the fixed block, the diameter of fore-set is greater than the diameter of tube cap, and then is convenient for push up the tube cap back to the body through the fore-set.

The present application may be further configured in a preferred example to: the tube cap clamping part comprises clamping pieces which are arranged oppositely, the clamping pieces are arranged on the side walls opposite to the fixed block relatively, one end of each clamping piece is hinged and fixed with the fixed block through a limiting bearing, the other end of each clamping piece vertically extends downwards, a limiting sleeve is sleeved on the fixed block and the clamping pieces, the limiting sleeve is fixedly connected with the sliding plate, the bottom end of each clamping piece extends out of the bottom end of the limiting sleeve, limiting grooves are formed in the front side and the back side of the limiting sleeve and are opposite to the limiting bearing of the fixed clamping piece, the limiting grooves formed in the front side wall and the back side wall of the limiting sleeve are two, each limiting groove comprises a vertical groove and a chute, the bottom end of each vertical groove is communicated with the chutes, the width between the vertical grooves is the same as the diameter of the tube cap, the two limiting grooves are arranged in a splay.

Through adopting above-mentioned technical scheme, it is fixed with the fixed block to articulate through pressing from both sides tight piece, presss from both sides tight piece and spacing bearing card and slides from top to bottom along the spacing groove orbit in the spacing groove to the drive is tightened up or is opened with the articulated fixed tight piece of clamp of fixed block, and then is convenient for press from both sides the tight pulling-up or loosen of tube cap.

The present application may be further configured in a preferred example to: the bottom end of the clamping piece is fixed with a clamping piece, and the clamping piece horizontally extends out to be vertical to the clamping piece.

Through adopting above-mentioned technical scheme, through the setting of card, the card limit level is stretched out and is pressed from both sides tight piece mutually perpendicular, is convenient for make the card block at the lower limb of tube cap, and then is convenient for pull up the tube cap from the body.

The present application may be further configured in a preferred example to: the body clamping piece includes the clamping piece and the tightening piece that set up relatively, and the top and the stop collar of clamping piece rotate to be connected and every clamping piece sets up with a clamp plate is relative respectively, and the clamping piece is located the outside of pressing from both sides the clamp plate, and the bottom of clamping piece is less than the bottom of pressing from both sides the clamp plate, and the tightening piece is fixed between the clamping piece that sets up relatively.

Through adopting above-mentioned technical scheme, through the cooperation setting of clamping piece and packing up spare, the vertical downstream of the clamping piece of relative setting presss from both sides the fastening with body side wall and decides, through the setting up of packing up spare, provides the clamp force for the clamping piece of relative setting, and then is convenient for press from both sides the body tightly.

The present application may be further configured in a preferred example to: the breach has been seted up on the lateral wall that stop collar is relative with the clamping piece, and the clamping piece is fixed with the second stationary blade towards one side of breach, and the second stationary blade stretches into in the breach, runs through the second stationary blade and links to each other with the stop collar lateral wall is fixed through the second pivot, and the cover is equipped with the second bearing in the second pivot, and the second bearing links to each other with the second pivot is fixed, second bearing and clamp plate looks butt.

Through adopting above-mentioned technical scheme, through the fixed second stationary blade of clamping piece towards one side of breach, the second pivot runs through the second stationary blade and links to each other with the spacing lateral wall is fixed, and along with the clamping piece up-and-down motion drives the second bearing rotation through frictional force, and then drives the clamping piece and rotates to be convenient for drive the clamping piece that sets up relatively and be close to each other or keep away from, realize that the clamping piece that sets up relatively opens the state of tightening up.

The present application may be further configured in a preferred example to: the clamping piece is still fixed with first stationary blade along clamping piece length direction towards one side of breach, first stationary blade is located second stationary blade top, run through first stationary blade through first pivot and rotate with the stop collar lateral wall and link to each other, one side that first stationary blade deviates from the clamping piece is relative with the driving pipe lateral wall, still overlap respectively in first pivot and be equipped with first bearing, first bearing is fixed continuous with the first pivot that corresponds, first bearing is relative with the driving pipe lateral wall, the top position of the lateral wall of clamp splice is the inclined plane setting of downward sloping, the inclined plane is to the direction slope of keeping away from the fixed block along the length direction of clamp splice.

Through adopting above-mentioned technical scheme, through the frictional force of second bearing and the tight piece of clamp, make the clamping piece of being connected rotate with the stop collar and revolute the rotation point and rotate, make the bottom of clamping piece open each other, along with pressing from both sides tight piece upward movement, the second bearing passes through the butt in the inclined plane department of pressing from both sides tight piece, along with pressing from both sides tight piece continuation upward movement, spacing bearing on pressing from both sides tight piece is when being located the top of spacing groove, the second bearing butt is on the vertical lateral wall of pressing from both sides tight piece, the slope grow gradually of second bearing butt, drive the second bearing rotation, and then drive the clamping piece revolute the rotation point and rotate outwards to open, thereby prevent that the clamping piece is vertical.

The present application may be further configured in a preferred example to: the opposite side walls of the card are arc-shaped.

Through adopting above-mentioned technical scheme, be the arc through the relative lateral wall of card and set up be convenient for with the marginal looks adaptation of circular shape tube cap, and then be convenient for pull up the tube cap from the body.

The present application may be further configured in a preferred example to: the clamping piece is L shape, and the clamping piece includes vertical piece and level piece, and vertical piece rotates with the stop collar to be connected, and the bottom and the level piece of vertical piece are fixed, and the level piece orientation is stretched out towards the direction level that is close to each other.

Through adopting above-mentioned technical scheme, rotate through vertical piece and stop collar and be connected, paste along with the first pivot of pressing from both sides tight piece and fixed vertical piece, and then drive first pivot and vertical piece and rotate to the vertical piece that realizes relative setting rotates around first pivot each other.

The present application may be further configured in a preferred example to: the tightening piece comprises a bolt and a spring which are respectively fixed on the side walls of the clamping pieces which are oppositely arranged, the bolt is oppositely arranged and is positioned at the same horizontal height, and two ends of the spring are respectively hooked on the bolt.

Through adopting above-mentioned technical scheme, through fixing bolt respectively on the clamping piece that sets up relatively, establish on the bolt is hung at spring length direction's both ends, and the pulling force through the spring is convenient for be close to the clamping piece that sets up relatively each other, and then presss from both sides the body tightly.

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

1. the transmission rod is driven to rotate by the first driving motor, the connecting plate, the clamping mechanism fixedly connected with the connecting plate and the top cover mechanism are driven to move up and down along the vertical direction, so that the clamping mechanism can move down to a position close to the sample tube conveniently, the second driving motor is started to drive the top cover mechanism to move vertically and down, and further drive the tube cover clamping piece connected with the top cover mechanism to move downwards to clamp the tube cover;

2. the clamping piece is hinged and fixed with the fixing block, and the clamping piece and the limiting bearing are clamped in the limiting groove and slide up and down along the track of the limiting groove, so that the clamping piece hinged and fixed with the fixing block is driven to tighten or open, and the pipe cover is convenient to clamp, pull or loosen;

3. through the fixed second stationary blade of one side of clamping piece towards the breach, the second pivot runs through the second stationary blade and links to each other with the spacing sleeve lateral wall is fixed, drives the second bearing rotation through frictional force along with the clamp plate up-and-down motion, and then drives the clamping piece and rotates to be convenient for drive the clamping piece that sets up relatively and be close to each other or keep away from, realize that the clamping piece that sets up relatively opens the state of tightening up.

Drawings

Fig. 1 is a schematic structural view of the uncapping mechanism.

Fig. 2 is a schematic view of a tube cover clamp construction.

Fig. 3 is a schematic structural diagram of the top cover mechanism.

Figure 4 is a schematic view of a tube clamp construction.

Fig. 5 is an exploded view of the uncapping mechanism.

Fig. 6 is a schematic view of a tube cover clamp and clip configuration.

Fig. 7 is a schematic view of the detection mechanism.

FIG. 8 is a partially enlarged schematic view of portion A of FIG. 7

In the figure, 1, a fixed frame; 2. a first drive motor; 21. a transmission rod; 3. a connecting plate; 4. a guide bar; 5. a clamping mechanism; 51. a tube cap clamp; 511. a clamping piece; 5111. a card; 5112. a bevel; 512. a long groove; 513. a limiting sleeve; 5131. a limiting groove; 51311. a vertical slot; 51312. a chute; 5132. a notch; 514. a limit bearing; 52. a tube body clamping member; 521. a clip; 5211. a vertical sheet; 52111. a placement groove; 5212. a horizontal sheet; 522. a tightener; 5221. a bolt; 5222. a spring; 523. a first fixing sheet; 524. a first rotating shaft; 5241. a first bearing; 525. a second fixing sheet; 526. a second rotating shaft; 5261. a second bearing; 6. a top cover mechanism; 61. a fixed block; 62. a top pillar; 7. a second drive motor; 8. a connecting member; 81. an electric push rod; 82. a sliding plate; 821. a top plate; 822. a side plate; 83. a drive tube; 9. a sample tube; 91. a pipe body; 92. a tube cover; 10. a detection mechanism; 101. a detection member; 1011. a spring plate; 1012. detecting a wheel; 1013. a butting block; 102. a sensor.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

Referring to fig. 1, the uncapping mechanism disclosed by the invention comprises a fixed frame 1, wherein the fixed frame 1 is vertically arranged, a first driving motor 2 is fixed at the top end of the fixed frame 1, a driving rod 21 is fixed on an output shaft of the first driving motor 2, the driving rod 21 is vertically arranged, and a connecting plate 3 is in threaded connection with the driving rod 21. The fixing frame 1 is further fixed with a guide rod 4, the guide rod 4 is vertically arranged, and one end of the connecting plate 3 is sleeved on the guide rod 4 and is in sliding connection with the guide rod 4. A clamping mechanism 5 and a top cover mechanism 6 are fixedly connected to one side of the connecting plate 3 far away from the transmission rod 21. The top end of the top cover mechanism 6 is fixed with a second driving motor 7 through a connecting piece 8. The clamping mechanism 5 comprises a pipe clamping piece 52 and a pipe cover clamping piece 51, the pipe clamping piece 52 is fixedly connected with the top cover mechanism 6, the pipe clamping piece 52 is rotatably connected with the pipe cover clamping piece 51, and the connecting piece 8 can drive the top cover mechanism 6 to vertically move up and down.

Start first driving motor 2, first driving motor 2 drives transfer line 21 and rotates, and then drive connecting plate 3 and with connecting plate 3 fixed connection's clamping mechanism 5 and top cap mechanism 6 along vertical direction up-and-down motion, thereby make clamping mechanism 5 downstream to the position that is close to sample pipe 9, start second driving motor 7, drive top cap mechanism 6 vertical downstream through connecting piece 8, and then drive the tube cap clamping part 51 downstream that links to each other with top cap mechanism 6 and press from both sides tight tube cap 92, it is fixed with body clamping part 52 that tube cap clamping part 51 rotates the connection simultaneously. Then drive the vertical upward movement of tube cap clamping piece 51 through second driving motor 7, break away from tube cap 92 from body 91, after the operation is accomplished, drive the vertical downward movement of top cap mechanism 6 again, return tube cap 92 to body 91 top.

Referring to fig. 2 and 3, the top cover mechanism 6 includes a fixing block 61 and a top pillar 62, and the top end of the fixing block 61 is fixedly connected to the connecting member 8. The coupling member 8 includes an electric push rod 81, a slide plate 82, and a driving pipe 83. The electric push rod 81 is connected with the bottom end of the second driving motor 7. The electric push rod 81 is fixedly connected with the sliding plate 82. The sliding plate 82 has an inverted U-shape, and the sliding plate 82 includes a top plate 821 and side plates 822, wherein the top plate 821 is horizontally disposed, and both ends of the top plate 821 in the length direction are fixed to the side plates 822. The side plate 822 and the top plate 821 are perpendicular to each other. Electric push rod 81 is fixed to top plate 821 through top plate 821. The transmission pipe 83 is located below the top plate 821 and is sleeved on the electric push rod 81 to be connected with the electric push rod 81, and the lower portion of the transmission pipe 83 is connected with the fixed block 61. The top cover mechanism 6 is driven to move up and down along the vertical direction conveniently through the connecting piece 8. The bottom of fixed block 61 links to each other with fore-set 62, and the diameter of fore-set 62 is greater than the diameter of tube cap 92, and then is convenient for butt to the tube cap 92 of relative setting, with the tube cap 92 top return to on the body 91.

The tube cover clamping member 51 includes oppositely disposed clamping tabs 511 and stop collars 513. The clamping piece 511 is vertically arranged, one end of the clamping piece 511 is hinged and fixed with the side wall opposite to the fixed block 61 through a limiting bearing 514, and the other end of the clamping piece 511 vertically extends downwards. The oppositely disposed clamping tabs 511 are respectively located in the same direction as the oppositely disposed side plates 822. The limiting sleeve 513 is sleeved on the fixing block 61 and the clamping piece 511, and the limiting sleeve 513 is rectangular with an opening at the bottom end. The top end of the limiting sleeve 513 is sleeved on the transmission pipe 83. The upper part of the outer side wall of the position-limiting sleeve 513 is attached to the opposite side plate 822 and is fixedly connected with the side plate 822 through a bolt 5221. The bottom end of the clamping piece 511 extends from the bottom end of the stop collar 513.

The front side wall and the back side wall of the limiting sleeve 513 are provided with limiting grooves 5131 at positions opposite to the limiting bearings 514 of the fixed clamping pieces 511, each limiting groove 5131 comprises a vertical groove 51311 and a chute 51312, the bottom end of each vertical groove 51311 is communicated with the corresponding chute 51312, the two limiting grooves 5131 are oppositely arranged in a splayed shape, the width between the vertical grooves 51311 oppositely arranged on the same side wall is the same as the diameter of the pipe cover 92, the limiting bearings 514 are clamped in the limiting grooves 5131 to slide up and down along the track of the limiting grooves 5131, so that the clamping pieces 511 hinged and fixed with the fixed blocks 61 are driven to tighten or open, and the pipe cover 92 is convenient to clamp and pull up or loosen. The bottom end of the clamping piece 511 is fixed with a clamping piece 5111, the clamping piece 5111 horizontally extends out to be perpendicular to the clamping piece 511, the side wall, opposite to the clamping piece 5111, is arc-shaped, so that the clamping piece 5111 is clamped at the lower edge of the tube cover 92, the clamping piece 5111 is arc-shaped, the clamping piece is conveniently matched with the edge of the circular tube cover 92, and the tube cover 92 is conveniently pulled out from the tube body 91.

Referring to fig. 4 and 5, the tube clamp 52 includes opposed jaws 521 and a tightening member 522. The top of clamping piece 521 rotates with stop collar 513 and is connected and every clamping piece 521 sets up with a clamp piece 511 respectively relatively, and clamping piece 521 is located the outside of clamp piece 511, and the bottom of clamping piece 521 is less than the bottom of clamp piece 511, and then is convenient for press from both sides the body 91 lateral wall that is located the below of tube cap 92 tightly. The take up member 522 is disposed between the oppositely disposed jaws 521. A notch 5132 is formed in the side wall of the limiting sleeve 513 opposite to the clamping piece 521, and the notch 5132 is rectangular. A first fixing piece 523 and a second fixing piece 525 are respectively fixed on one side of the clip 521 facing the notch 5132 along the length direction of the clip 521. The first fixing plate 523 and the second fixing plate 525 respectively penetrate through the first rotating shaft 524 and the second rotating shaft 526 and are rotatably connected with the side wall of the stop collar 513. The side of the first fixing tab 523 facing away from the clip 521 is opposite to the side wall of the driving pipe 83. The side of the second fixing piece 525 facing away from the clamping piece 521 is opposite to the clamping piece 511. A first bearing 5241 and a second bearing 5261 are further respectively sleeved on the first rotating shaft 524 and the second rotating shaft 526, and the first bearing 5241 and the second bearing 5261 are respectively fixedly connected with the corresponding first rotating shaft 524 and the corresponding second rotating shaft 526. The first bearing 5241 faces the side wall of the drive pipe 83, and the second bearing 5261 abuts against the clamp piece 511.

The second bearing 5261 is driven to rotate by friction force along with the up-and-down movement of the clamping piece 511, so as to drive the clamping pieces 521 to rotate, thereby facilitating the driving of the clamping pieces 521 which are oppositely arranged to approach or leave each other.

The clamping piece 521 is L-shaped, the clamping piece 521 comprises a vertical piece 5211 and a horizontal piece 5212, the vertical piece 5211 is rotatably connected with the limiting sleeve 513, the bottom end of the vertical piece 5211 is fixed with the horizontal piece 5212, and the horizontal piece 5212 horizontally extends towards the direction close to each other. The opposite side walls of the horizontal piece 5212 are arc-shaped, so as to be conveniently attached to the side walls of the pipe body 91, and further clamp the pipe body 91.

Referring to fig. 5 and 6, the upper portion of the outer side wall of the clamping piece 511 is provided with a downwardly inclined surface 5112, and the inclined surface 5112 is inclined in a direction away from the fixing block 61 along the length direction of the clamping piece 511. The clamping piece 511 slides along the limiting groove 5131 of the limiting sleeve 513. When the limit bearing 514 of the clamping piece 511 is positioned at the bottom end of the limit groove 5131 as the clamping piece 511 moves downwards, the first bearing 5241 abuts on the outer side wall of the transmission pipe 83, the second bearing 5261 abuts on the side wall of the clamping piece 511, and the clamping piece 521 rotationally connected with the limit sleeve 513 rotates around the rotating point through the friction force between the second bearing 5261 and the clamping piece 511, so that the bottom ends of the clamping pieces 521 are mutually opened. With the upward movement of the clamping piece 511, the first bearing 5241 abuts against the inclined surface 5112 of the clamping piece 511, and with the upward movement of the clamping piece 511, when the limit bearing 514 on the clamping piece 511 is located at the top end of the limit groove 5131, the first bearing 5241 abuts against the vertical side wall of the clamping piece 511, and the abutting first bearing 5241 and the first rotating shaft 524 are driven to rotate by the difference of the abutting positions of the first bearing 5241 and the clamping piece 511, so that the clamping piece 521 is further driven to rotate.

The take up member 522 includes a bolt 5221 and a spring 5222, each secured to the opposing clip 521 side walls. The bolts 5221 are oppositely arranged and located at the same horizontal height, two ends of the spring 5222 are respectively hooked on the bolts 5221, the clamping pieces 521 which are oppositely arranged are convenient to approach each other through the tensile force of the spring 5222, and then the pipe body 91 is convenient to clamp tightly.

Referring to fig. 6 and 7, a placement groove 52111 is opened at the lower end of the vertical piece 5211, and a detection mechanism 10 for detecting whether the tube cover 92 is clamped or not when the clamping piece 511 is clamped is provided in the placement groove 52111. The detection mechanism 10 includes a detection member 101 and a sensor 102, and the detection member 101 is connected to the sensor 102. The sensor 102 is fixed in the placement groove 52111. The detection piece 101 comprises an elastic sheet 1011 and a detection wheel 1012, the elastic sheet 1011 is vertically arranged, and the top end of the elastic sheet 1011 is rotatably connected with the detection wheel 1012. The clamp piece 511 is provided with a long groove 512 at a position opposite to the detection wheel 1012, and part of the side wall of the tube cover 92 is exposed from the long groove 512. An abutting block 1013 is fixed to a side wall of the sensor 102 opposite to the spring 1011, and the sensor 102 detects that the tube cover 92 is positioned between the clamp pieces 511 when the sensor 102 receives a signal change due to the spring 1011 being compressed and the spring 1011 abutting against the abutting block 1013 when the detection wheel 1012 abuts against the side wall exposed from the long groove 512.

Starting the first driving motor 2, the first driving motor 2 drives the transmission rod 21 to rotate, and then drives the connecting plate 3 and the clamping mechanism 5 and the top cover mechanism 6 which are fixedly connected with the connecting plate 3 to move up and down along the vertical direction, and drives the clamping mechanism 5 and the top cover mechanism 6 to the position close to the sample tube 9. The second driving motor 7 is started, the second driving motor 7 drives the fixing block 61 and the top post 62 to vertically move downwards, the limiting bearing 514 clamped in the limiting groove 5131 is driven to slide along the limiting groove 5131, the limiting bearing 514 moves along the vertical groove 51311, the clamping piece 511 is driven to vertically move downwards, the limiting bearing 514 moves along the inclined groove 51312, the clamping piece 511 hinged to the fixing block 61 through the limiting bearing 514 is relatively opened, and the clamping piece 5111 at the bottom end of the clamping piece 511 is attached to the bottom end edge of the pipe cover 92. The tube cover 92 is caught on the catching piece 5111 and the tube cover 92 is sandwiched between the oppositely disposed catching pieces 511. Meanwhile, as the clamping piece 511 is opened outwards, the clamping piece 511 is attached to the side wall of the second bearing 5261 opposite to the side wall, the second rotating shaft 526 is driven to rotate through friction force, the clamping piece 521 fixed with the second rotating shaft 526 is driven to be opened, and the pipe body 91 is further conveniently clamped between the clamping pieces 521 which are opened oppositely.

The second driving motor 7 is started to drive the clamping mechanism 5 and the top cover mechanism 6 to vertically move upwards, the limiting bearing 514 of the clamping piece 511 which is arranged oppositely moves along the inclined groove 51312 and then enters the vertical groove 51311 to move, the second bearing 5261 abuts against the side wall of the clamping piece 511, when the clamping piece 511 which is arranged oppositely starts to tighten, the distance between the clamping pieces 521 which are arranged oppositely is gradually reduced, the spring 5222 which is fixed on the clamping piece 521 which is arranged oppositely in a matched mode enables the clamping piece 521 to gradually hold the pipe body 91 tightly, and therefore the pipe cover 92 and the pipe body 91 are enabled to be automatically separated. The clamping piece 511 continues to move upwards along the vertical groove 51311, the first bearing 5241 abuts against the inclined surface of the clamping piece 511, when the limiting bearing 514 on the clamping piece 511 is positioned at the top end of the vertical groove 51311, the first bearing 5241 abuts against the vertical side wall of the clamping piece 511, the position abutted by the first bearing 5241 is changed from the fixed block 61 to the inclined surface of the clamping piece 511 to the vertical side wall of the clamping piece 511, the abutting gradient of the first bearing 5241 is gradually increased, the first bearing 5241 is driven to rotate, and then the clamping piece 521 is driven to rotate around the first rotating shaft 524 to be outwards opened, so that the clamping piece 521 is prevented from vertically upwards bringing the pipe body 91.

Meanwhile, as the clamping piece 511 moves upwards, when the limiting bearing 514 of the opposite clamping piece 511 moves along the inclined groove 51312 and further enters into the vertical groove 51311, and the opposite clamping piece 511 starts to be tightened, the detection wheel 1012 can be abutted against the side wall of the tube cover 92, so that the detection wheel 1012 and the elastic sheet 1011 are compressed. The elastic sheet 1011 abuts against the abutting block 1013, the sensor 102 detects that the tube cover 92 is clamped by the oppositely arranged clamping pieces 511, and sends a signal to the second driving motor 7, so that the second driving motor 7 continues to work, and the limiting bearing 514 of the oppositely arranged clamping pieces 511 vertically moves upwards along the vertical groove 51311 to drive the tube cover 92 to vertically move upwards.

After the test operation is completed, the second driving motor 7 is started, the second driving motor 7 drives the top cover mechanism 6 and the pipe cover clamping piece 51 to vertically move downwards, when the limiting bearing 514 of the fixed clamping piece 511 slides to the inclined groove 51312 along the vertical groove 51311, the clamping piece 511 is opened, the clamping piece 521 is made to be opened, the pipe cover 92 is placed on the surface of the pipe body 91, meanwhile, the top cover mechanism 6 continues to move downwards, at the moment, the limiting bearing 514 moves along the inclined groove 51312, the top column 62 of the ejector rod mechanism is attached to the upper surface of the pipe cover 92 and presses the pipe cover 92 downwards, the pipe cover 92 is pushed back to the pipe body 91, and the pipe cover 92 is automatically covered back.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.