Test tube cap sealing device and sample analysis assembly line system

Abstract

The invention discloses a test tube cap sealing device and a sample analysis assembly line system, and the test tube cap sealing device comprises a first clamping piece which is connected with a tube cap conveying device and receives a tube cap conveyed by the tube cap conveying device; the second clamping piece is used for clamping the pipe cap on the first clamping piece; the driving mechanism is used for driving the second clamping piece to carry the tube cap to perform cap sealing operation on the test tube; and the claw opening assembly is used for driving the opening claw of the second clamping piece clamp after the cap sealing operation. After the cap sealing operation is completed, the claw opening assembly performs active claw opening on the second clamping piece, so that the second clamping piece releases the clamped tube cap, and the tube cap in the test tube can be effectively prevented from being taken out in the resetting process after the cap sealing operation of the second clamping piece.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a test tube capping device and a sample analysis pipeline system. Background Art

[0002] In the field of medical testing, with the increase in the number of samples, laboratory pipeline testing has become a trend in each testing laboratory. As an automated pipeline testing system, automatically capping test tubes is a necessary operation step; after the test tubes complete sample aspiration in the pipeline, a sealing cap needs to be put on the test tubes for convenient subsequent storage. Traditional capping devices use elastic pieces to provide clamping force for carrying and pressing the tube caps. After capping, the elastic pieces are not easy to open, so the elastic pieces are likely to bring out the already pressed tube caps again. Summary of the Invention

[0003] The present invention discloses a test tube capping device and a sample analysis pipeline system to solve the problem in the prior art that the already pressed tube caps are likely to be brought out again.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions: A test tube capping device, comprising: A first clamping member, connected to a tube cap conveying device, for receiving the tube caps conveyed by the tube cap conveying device; A second clamping member, for clamping the tube caps on the first clamping member; A driving mechanism, for driving the second clamping member to carry the tube cap to perform capping operation on the test tube; A claw opening assembly, for driving the claws of the second clamping member to open after the capping operation.

[0005] Further, the second clamping member includes: A first claw and a second claw, both rotatably mounted on the driving mechanism; A first elastic member, connected between the first claw and the second claw, for providing the clamping force between the first claw and the second claw.

[0006] Further, the claw opening assembly includes: A first motor, fixedly mounted on the driving mechanism; A cam, mounted on the output shaft of the first motor and arranged between the first claw and the second claw.

[0007] Further, a baffle is provided at the connection between the first clamping member and the tube cap conveying device; the baffle is rotatably mounted on the driving mechanism and is used for blocking between the tube caps.

[0008] Further, a guide groove is provided on the baffle; a first transmission shaft is provided on the cam; the first transmission shaft is slidably mounted in the guide groove and is used for driving the baffle to rotate.

[0009] Furthermore, the driving mechanism includes: A first mounting plate and a second mounting plate, which are connected by a third elastic member, and a second clamping member and a claw opening assembly are both mounted on the second mounting plate; A guide rail, on which the first mounting plate and the second mounting plate are slidably mounted; A second motor, whose output shaft is fixed on the first mounting plate, and is used to drive the first mounting plate to move, thereby driving the second clamping member and the claw opening assembly mounted on the second mounting plate to move.

[0010] Furthermore, a fixing groove is provided below the second mounting plate; the second clamping member is rotatably mounted in the fixing groove; the claw opening assembly is fixedly mounted on one side of the fixing groove.

[0011] Furthermore, a cap pressing head is further provided below the second clamping member; the cap pressing head is fixedly mounted at the lower end of the second mounting plate.

[0012] Furthermore, it further includes: A fixing plate, on one side of the fixing plate away from the cap conveying device, the first clamping member and the driving mechanism are provided; A conveying opening is provided on the fixing plate, and both sides are respectively connected to the cap conveying device and the first clamping member, and are used to convey the caps on the cap conveying device to the first clamping member.

[0013] Furthermore, the first clamping member includes: A third claw and a fourth claw, which are rotatably mounted on both sides of the conveying opening and are connected by a second elastic member.

[0014] Furthermore, second transmission shafts are provided on the opposite sides of the third claw and the fourth claw; the second transmission shafts can rotate relative to the third claw and the fourth claw; during the downward movement of the driving mechanism, the second transmission shafts on both sides are squeezed, thereby driving the third claw and the fourth claw to move in opposite directions, so that the first clamping member opens its claws.

[0015] Furthermore, blanking baffles are provided on the sides of the third claw and the fourth claw away from the cap conveying device.

[0016] A sample analysis pipeline system includes: A pipeline track for the transmission of test tubes; A blocking mechanism for blocking the test tubes on the pipeline track; A tube clamping mechanism for clamping and fixing the blocked test tubes; The cap conveying device and the above-mentioned test tube capping device. After the cap conveying device transports the caps to the test tube capping device, the test tube capping device caps the test tubes fixed by the tube clamping mechanism.

[0017] The present invention adopts the above technical solutions and has the following advantages: After the capping operation of the present invention is completed, the claw opening assembly actively opens the claws of the second clamping member, so that the second clamping member releases the clamped cap, which can effectively prevent the cap in the test tube from being taken out during the reset process of the second clamping member after the capping operation. Brief Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the capping device of the present invention; Figure 2 It is an exploded view of the capping device of the present invention; Figure 3 It is a schematic structural diagram of the claw opening assembly of the present invention; Figure 4 It is a cap diagram at the connection between the first clamping member and the cap conveying device of the present invention; Figure 5 It is an installation schematic diagram of the second clamping member and the claw opening assembly of the present invention; Figure 6 It is a schematic structural diagram of the driving mechanism of the present invention; Figure 7 It is an installation schematic diagram of the second clamping member, the claw opening assembly and the second mounting plate of the present invention; Figure 8 It is a cross-sectional view of the second mounting plate of the present invention; Figure 9 It is an initial state diagram of the capping device of the present invention; Figure 10 It is a contact state diagram of the first mounting plate and the second transmission shaft of the present invention; Figure 11 It is a schematic diagram of the opening of the third claw and the fourth claw of the present invention; Figure 12 It is a schematic diagram of the cap used in the present invention; Figure 13 It is a schematic diagram of the compression state of the compression spring of the present invention; Figure 14 It is a schematic diagram of the claw opening assembly driving the second clamping member to open the claws of the present invention; Figure 15 It is a schematic diagram of the sample analysis pipeline system of the present invention.

[0019] Reference numerals: 1 - tube cap; 2 - fixing plate; 3 - conveying port; 4 - first jaw; 5 - second jaw; 6 - first elastic member; 7 - first motor; 8 - cam; 9 - baffle; 10 - guide groove; 11 - first transmission shaft; 12 - cap pressing head; 13 - third jaw; 14 - fourth jaw; 15 - second elastic member; 16 - second transmission shaft; 17 - blanking baffle; 18 - adjusting assembly; 19 - second motor; 20 - guide rail; 21 - first mounting plate; 22 - second mounting plate; 23 - fixing groove; 24 - connecting block; 25 - first elastic pressing block; 26 - second elastic pressing block; 27 - sliding rod; 28 - compression spring; 29 - jaw opening code disc; 30 - blocking mechanism; 31 - tube clamping mechanism. Embodiment

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below. Apparently, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] As Figure 1 , Figure 2 shown, a test tube capping device includes a first clamping member connected to a tube cap conveying device to receive the tube cap 1 conveyed by the tube cap conveying device; a second clamping member for clamping the tube cap 1 on the first clamping member; a driving mechanism for driving the second clamping member to carry the tube cap 1 to perform a capping operation on the test tube; and a jaw opening assembly for driving the jaw opening of the second clamping member after the capping operation.

[0022] After the capping operation of the present invention is completed, the jaw opening assembly actively opens the jaw of the second clamping member, so that the second clamping member releases the clamped tube cap, which can effectively prevent the tube cap in the test tube from being taken out during the reset process of the second clamping member after the capping operation.

[0023] The test tube capping device of the present invention further includes a fixing plate 2 for installing and fixing the first clamping member and the driving mechanism; the first clamping member, the second clamping member, the jaw opening assembly and the driving mechanism are arranged on one side of the fixing plate 2 away from the tube cap conveying device; both the second clamping member and the jaw opening assembly are arranged on the driving mechanism. Arranging the second clamping member and the jaw opening assembly on the driving mechanism at the same time can reduce the overall volume of the device, making the device suitable for installation in equipment with a narrow space.

[0024] A conveying port 3 is arranged on the fixing plate 2, which is connected to the tube cap conveying device and the first clamping member on both sides respectively, and is used to convey the tube cap 1 on the tube cap conveying device to the first clamping member. During the test tube capping process, it is necessary for the second clamping member to carry the tube cap 1 to perform a pressing operation on the test tube. Therefore, in the initial state, both the second clamping member and the jaw opening assembly are located above the conveying port 3.

[0025] The second clamping member includes a first clamping jaw 4 and a second clamping jaw 5, both of which are rotatably mounted on the driving mechanism; the first clamping jaw 4 and the second clamping jaw 5 are connected by a first elastic member 6, and the first elastic member 6 provides a clamping force between the clamping jaws.

[0026] Furthermore, the first clamping jaw 4 and the second clamping jaw 5 are cross-rotatably mounted on the driving mechanism via the same rotating shaft, and the tops of the first clamping jaw 4 and the second clamping jaw 5 are connected via a first elastic member 6 .

[0027] like Figure 3 , Figure 5 As shown, the jaw opening assembly includes a first motor 7, which is fixedly mounted on the driving mechanism; a cam 8, which is mounted on the output shaft of the first motor 7 and is disposed between the first clamping jaw 4 and the second clamping jaw 5. After the test tube capping operation is completed, the first motor 7 drives the cam 8 to rotate, so as to open the first clamping jaw 4 and the second clamping jaw 5 through the cam 8, so that the clamping jaw releases the clamping of the tube cap, and prevents the tube cap 1 on the test tube from being taken out when the second clamping member is reset and moved upward. Specifically, in order to realize the function of the first motor 7 driving the cam 8 to rotate, the first motor 7 in this embodiment is a rotary motor.

[0028] like Figure 4 As shown, the pipe caps at the connection between the first clamp and the pipe cap conveying device are easily overlapped, which affects the clamping of the pipe cap by the second clamp. In order to solve the above problem, the embodiment of the present invention is provided with a baffle 9 at the connection between the first clamp and the pipe cap conveying device, and the baffle 9 is rotatably mounted on the driving mechanism. After the first clamp receives the pipe cap 1 of the pipe cap conveying device, the baffle 9 closes the conveying port 3, blocks the pipe cap 1 on the first clamp and the pipe cap on the pipe cap conveying device, and prevents the influence of the pipe cap 1 on the pipe cap conveying device during the process of the second clamp clamping and pressing down the pipe cap 1.

[0029] like Figure 5 As shown, the baffle 9, the first clamping jaw 4 and the second clamping jaw 5 share the same rotating shaft, and the three are rotatably mounted on the driving mechanism through the same rotating shaft; a guide groove 10 is provided at the upper end of the baffle 9, and the baffle 9 is installed on the cam 8 through the guide groove 10; a first transmission shaft 11 is fixed on the cam 8, and the first transmission shaft 11 is slidably installed in the guide groove 10, which is used to drive the baffle 9 to rotate, so as to realize the opening and closing of the baffle 9 to the conveying port 3.

[0030] Below the second clamping member, a cap pressing head 12 is further provided. The cap pressing head 12 is fixedly installed on the driving mechanism. A groove is provided inside the cap pressing head 12 and is adapted to the tube cap 1. The first clamping jaw 4 and the second clamping jaw 5 extend into the groove. After the driving mechanism carries the cap pressing head 12 to contact the tube cap 1 on the first clamping member, the cap pressing head 12 presses down, and the tube cap 1 enters the groove and squeezes the first clamping jaw 4 and the second clamping jaw 5, causing the first clamping jaw 4 and the second clamping jaw 5 to be forced to open. After the tube cap 1 is squeezed into the space between the first clamping jaw 4 and the second clamping jaw 5, the first clamping jaw 4 and the second clamping jaw 5 clamp the tube cap 1 under the elastic force of the first elastic member 6.

[0031] As Figure 1 , Figure 2 shown, the first clamping member includes a third clamping jaw 13 and a fourth clamping jaw 14, which are rotatably installed on both sides of the conveying port 3. The third clamping jaw 13 and the fourth clamping jaw 14 are connected by a second elastic member 15. The third clamping jaw 13 and the fourth clamping jaw 14 cooperate to receive the tube cap 1 conveyed by the tube cap conveying device from the conveying port 3. The third clamping jaw 13 and the fourth clamping jaw 14 provide a supporting force for the tube cap 1 from both sides.

[0032] Furthermore, the third clamping jaw 13 and the fourth clamping jaw 14 are rotatably installed on the fixing plate 2 through different rotating shafts. On the opposite sides of the third clamping jaw 13 and the fourth clamping jaw 14, a second transmission shaft 16 is provided, and the second transmission shaft 16 can rotate relative to the third clamping jaw 13 and the fourth clamping jaw 14. During the process of the driving mechanism carrying the second clamping member moving downward, the driving mechanism contacts the second transmission shafts 16 on both sides and squeezes the second transmission shafts 16 on both sides, thereby driving the third clamping jaw 13 and the fourth clamping jaw 14 to move in the opposite direction, causing the first clamping member to open its claws and avoiding the interference of the first clamping member with the capping operation. In the present invention, by squeezing and driving the first clamping member to open its claws through the driving mechanism, the setting of the claw-opening structure can be effectively reduced, and the overall structure of the device can be reduced.

[0033] Furthermore, on the sides of the third clamping jaw 13 and the fourth clamping jaw 14 away from the tube cap conveying device, a blanking baffle 17 is provided. The tube cap 1 dropped by the tube cap conveying device will slide between the third clamping jaw 13 and the fourth clamping jaw 14. The presence of the blanking baffle 17 can prevent the tube cap 1 from sliding along the horizontal direction of the third clamping jaw 13 and the fourth clamping jaw 14.

[0034] Furthermore, on one side of the tops of the third clamping jaw 13 and the fourth clamping jaw 14, an adjusting assembly 18 is installed respectively. The adjusting assembly 18 is installed on the fixing plate 2 and is used to adjust the minimum clamping angle between the third clamping jaw 13 and the fourth clamping jaw 14.

[0035] As Figure 6As shown in the figure, the driving mechanism includes a second motor 19, a guide rail 20, a first mounting plate 21 and a second mounting plate 22. Among them, the second motor 19 and the guide rail 20 are both fixedly installed on the fixed plate 2; the first mounting plate 21 and the second mounting plate 22 are both slidably installed on the guide rail 20 and are located above the conveying port 3; the first mounting plate 21 and the second mounting plate 22 are connected by a third elastic member, and the first mounting plate 21 is fixed on the output shaft of the second motor 19.

[0036] As Figure 7 , Figure 8 shown in the figure, a fixing groove 23 is provided below the second mounting plate 22, and the first jaw 4 and the second jaw 5 are rotatably installed in the fixing groove 23; the sealing cap press head 12 is fixedly installed at the lower end of the fixing groove 23; the jaw opening assembly is fixedly installed on one side of the fixing groove 23.

[0037] Further, the second motor 19 is a lead screw motor for outputting a linear motion in the vertical direction, and the output shaft of the lead screw motor is fixed on the first mounting plate 21 through a connecting block 24; the first mounting plate 21 and the second mounting plate 22 are both slidably installed on the guide rail through sliders.

[0038] As Figure 6 shown in the figure, a first elastic pressing block 25 and a second elastic pressing block 26 are respectively provided on the first mounting plate 21 and the second mounting plate 22; the third elastic member includes a sliding rod 27 and a compression spring 28; the sliding rod 27 includes a rod portion and a blocking portion; one end of the rod portion is fixed on the first elastic pressing block 25, and the other end slides through the second elastic pressing block 26 and is fixed on the blocking portion; the compression spring 28 is sleeved on the sliding rod 27; in this embodiment, two sliding rods 27 are provided, and the maximum distance between the two elastic pressing blocks is limited by the two sliding rods 27, and a compression spring 28 is sleeved on each sliding rod 27.

[0039] Further, in order for the driving mechanism to be able to drive the third jaw 13 and the fourth jaw 14 to open, the width of the first mounting plate 21 is greater than the distance between the two second transmission shafts 16 on both sides.

[0040] Further, in this embodiment, both the first elastic member 6 and the second elastic member 15 are tension springs for pulling the jaws towards the center.

[0041] For the convenience of the intelligent control of the test tube capping device of the present invention, in this embodiment, a capping encoder disc 29 is further provided on the output shaft of the claw opening assembly; a reset optocoupler adapted to the capping encoder disc 29 is provided on the second mounting plate 22 for resetting the claw opening assembly; an in-place detection optocoupler and a state detection optocoupler are respectively provided on both sides of the conveying port 3; the in-place detection optocoupler is used to detect whether there is a tube cap on the first clamping member directly below the capping press head 12, and the state detection optocoupler is used to detect whether the test tube is a tall test tube or a short test tube before test tube capping, and to detect the completion of the test tube capping operation; a stroke control optocoupler is further provided on one side of the fixing plate 2, and an optocoupler sheet adapted to the stroke control optocoupler is provided on the driving mechanism for controlling the driving stroke of the driving mechanism during different test tube capping operations.

[0042] The working process of the test tube capping device of the present invention is as follows: As Figure 9 shown, after the test tube is in place, the test tube capping device starts to work. The capping press head is above the output port and will not block the fall of the tube cap conveyed by the tube cap conveying device. There is a tube cap in place directly below the capping press head. The third claw and the fourth claw are in the state of the minimum included angle. The cam rotates from the horizontal state to the vertical state, and the first claw and the second claw are also in the state of the minimum included angle. The stop piece installed on the cam closes to block the tube cap on the first clamping member and the tube cap on the tube cap conveying device. The lead screw motor starts to run according to the corresponding number of steps, pushes the connecting block, and drives the first mounting plate to move downward. The first elastic pressing block on the first mounting plate pushes the compression spring, and the compression spring pushes the second elastic pressing block to drive the second mounting plate to move downward.

[0043] As Figure 10 shown, as the first mounting plate continues to move downward, its bottom starts to contact the second transmission shaft on the third claw and the fourth claw. At the same time, the first claw and the second claw have completely clamped the test tube cap at this time.

[0044] As Figure 11 shown, as the first mounting plate continues to move downward, the third claw and the fourth claw start to rotate outward around the rotating shaft and continue to press down until the hard brim of the tube cap touches the test tube, and the second mounting plate stops moving; as Figure 12 shown, it is an embodiment of the tube cap used in the invention. The upper two brims are harder and can cover the upper edge of the test tube to form a seal, and the lower two brims are softer and can fit the inner wall of the test tube to prevent falling off.

[0045] As Figure 13As shown, the lead screw motor continues to press down, pushing the connecting block to drive the first mounting plate to move downward. The first elastic pressing block on the first mounting plate pushes the compression spring. At this time, since the hard brim of the tube cap has covered the test tube, the second mounting plate can no longer move downward. The distance between the two elastic pressing blocks begins to decrease, causing the compression spring to compress. The elastic force generated thereby is converted into a downward pressure on the tube cap, firmly fitting the tube cap onto the test tube until the optocoupler moves to the position of the stroke control optocoupler corresponding to the test tube.

[0046] As Figure 14 shown, when the optocoupler moves to the position of the stroke control optocoupler corresponding to the test tube, the system starts the first motor to rotate the cam to the horizontal state, opening the first jaw and the second jaw so that they no longer clamp the tube cap. Subsequently, the lead screw motor starts to move in the reverse direction and returns to the initial state. In the initial state, the cam on the jaw opening assembly is in the horizontal state, and the flap on the cam is also in the open state. Until the next tube cap is in place, the cam rotates from the horizontal state to the vertical state, and the flap also rotates and closes following the cam, blocking the tube cap on the first clamping member and the tube cap on the tube cap conveying device.

[0047] The test tube capping device of the present invention does not require an additional air pump and occupies a small space. The jaws of this device will open when rising and will not take out the already pressed test tube cap, greatly increasing the success rate of capping.

[0048] As Figure 15 shown, the present invention also discloses a sample analysis pipeline system, including: a pipeline track (not shown) for conveying test tubes; a blocking mechanism 30 for blocking the test tubes on the pipeline track; a tube clamping mechanism 31 for clamping and fixing the blocked test tubes; a tube cap conveying device, and the above-mentioned test tube capping device. After the tube cap conveying device transports the tube cap to the test tube capping device, the test tube capping device caps the test tube fixed by the tube clamping mechanism.

[0049] When the test tube in the pipeline track of the present invention runs to directly below the test tube capping device, it will be blocked by the blocking mechanism; subsequently, the tube clamping mechanism will clamp the test tube. Synchronously, the state detection optocoupler behind the test tube capping device will detect whether the test tube is a tall test tube or a short test tube and feedback the information to the system. The system selects different pressing heights according to different test tube types; after the test tube capping device caps the test tube according to the pressing height, the state detection optocoupler will also check whether the test tube cap is successfully capped through the height; when the capping is successful, the tube clamping assembly will release the jaws, and the blocking assembly will withdraw the blocking bar, allowing the test tube to continue running to other modules.

[0050] The above are only embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are included within the scope of the claims of the present invention pending approval.

Claims

1. A test tube capping device, characterized in that, it includes: A first clamping member, connected to the cap conveying device, for receiving the caps conveyed by the cap conveying device; A second clamping member, for clamping the cap on the first clamping member; A driving mechanism, driving the second clamping member to carry the cap to perform a capping operation on the test tube; A claw opening assembly, used to drive the claws of the second clamping member to open after the capping operation.

2. The test tube capping device according to claim 1, characterized in that, the second clamping member includes: A first claw and a second claw, both rotatably installed on the driving mechanism; A first elastic member, connected between the first claw and the second claw, providing a clamping force between the first claw and the second claw.

3. The test tube capping device according to claim 2, characterized in that, the claw opening assembly includes: A first motor, fixedly installed on the driving mechanism; A cam, installed on the output shaft of the first motor, and arranged between the first claw and the second claw.

4. The test tube capping device according to claim 3, characterized in that, A baffle is provided at the connection between the first clamping member and the cap conveying device; the baffle is rotatably installed on the driving mechanism and is used for blocking between the caps.

5. The test tube capping device according to claim 4, characterized in that, A guide groove is provided on the baffle; a first transmission shaft is provided on the cam; the first transmission shaft is slidably installed in the guide groove and is used to drive the baffle to rotate.

6. The test tube capping device according to claim 1, characterized in that, the driving mechanism includes: A first mounting plate and a second mounting plate, which are connected by a third elastic member between the first mounting plate and the second mounting plate; the second clamping member and the claw opening assembly are both installed on the second mounting plate; A guide rail, on which the first mounting plate and the second mounting plate are slidably installed; A second motor, the output shaft of which is fixed on the first mounting plate, for driving the first mounting plate to move and thereby driving the second clamping member and the claw opening assembly installed on the second mounting plate to move.

7. The test tube capping device according to claim 6, characterized in that, A fixing groove is provided below the second mounting plate; the second clamping member is rotatably installed in the fixing groove; the claw opening assembly is fixedly installed on one side of the fixing groove.

8. The test tube capping device according to claim 6, characterized in that, A capping press head is further provided below the second clamping member; the capping press head is fixedly installed at the lower end of the second mounting plate.

9. The test tube capping device according to any one of claims 1-8, characterized in that, it further includes: A fixing plate, the first clamping member and the driving mechanism are arranged on one side of the fixing plate away from the cap conveying device; A conveying opening is provided on the fixing plate, and both sides are respectively connected to the cap conveying device and the first clamping member, for conveying the caps on the cap conveying device to the first clamping member.

10. The test tube capping device according to any one of claim 9, characterized in that, the first clamping member includes: A third claw and a fourth claw, rotatably installed on both sides of the conveying opening, and connected by a second elastic member.

11. The test tube capping device according to claim 10, It is characterized in that On the opposite sides of the third jaw and the fourth jaw, there are second transmission shafts respectively; the second transmission shafts can rotate relative to the third jaw and the fourth jaw; during the downward movement of the driving mechanism, the two second transmission shafts are squeezed, thereby driving the third jaw and the fourth jaw to move in opposite directions, so that the first clamping member opens its jaws.

12. A test tube capping device according to claim 10, It is characterized in that On the sides of the third jaw and the fourth jaw away from the tube cap conveying device, there are blanking baffles respectively.

13. A sample analysis pipeline system, It is characterized in that It includes: A pipeline track for conveying test tubes; A blocking mechanism for blocking the test tubes on the pipeline track; A tube clamping mechanism for clamping and fixing the blocked test tubes; A tube cap conveying device, and the test tube capping device according to any one of claims 1-12. After the tube cap conveying device transports the tube caps to the test tube capping device, the test tube capping device caps the test tubes fixed by the tube clamping mechanism.

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