A new test tube capping device

Abstract

The present invention relates to a novel test tube capping device, comprising a material storage mechanism, a material feeding mechanism, a cap adjustment mechanism and a capping mechanism. The material storage mechanism comprises a material storage bin, which comprises a rotatable turntable arranged inside the bin, and a groove matching the test tube cap is arranged circumferentially on the turntable; the material feeding mechanism is connected to the material storage mechanism for transmitting the test tube cap; the cap adjustment mechanism comprises a support block, which is provided with a accommodating cavity matching the test tube cap, and the accommodating cavity is connected to the material feeding mechanism; the cap adjustment mechanism also comprises a test tube cap push assembly and a test tube cap adjustment assembly arranged on both sides of the accommodating cavity, and the test tube cap push assembly pushes the test tube cap to the test tube cap adjustment assembly; the capping mechanism is connected to the test tube cap adjustment assembly and is constructed to drive the test tube cap adjustment assembly to reciprocate in the direction of approaching or moving away from the test tube. The novel test tube capping device provided by the present invention can realize the automatic installation of test tube caps on vacuum blood collection test tubes on the inspection assembly line, thereby realizing automated capping.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, in particular to a novel test tube capping device. Background Art

[0002] At present, the automation of medical testing is achieved through testing lines. The sample container to be tested is a vacuum blood collection tube. During the test, the vacuum blood collection tube needs to be opened for the next step of automatic sampling and testing. The samples after the test will be stored for a certain period of time for subsequent re-examination. In order to ensure the validity of the sample, the blood collection tube needs to be covered and preserved. At present, the automated medical testing line uses aluminum foil hot-melt to seal the vacuum blood collection tube, which may not be sealed tightly and can only seal plastic materials, not glass tubes. Special de-membrane equipment is required for re-examination, and the original opening equipment cannot be used, which increases the number of equipment and space occupied.

[0003] In addition, the existing medical testing automated assembly line sealing machine uses rack lifting, connecting rod cylinder rotation, and electric heating of aluminum film on the head to achieve packaging by high-temperature melting of the blood collection tube and welding the aluminum film. It has a complex structure, is difficult to process, and has high costs. The head needs to be cleaned regularly, and the mechanical failure rate is high. Summary of the Invention

[0004] The purpose of the present invention is to provide a novel test tube capping device to solve the technical problems mentioned in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a novel test tube capping device, comprising a material storage mechanism, a material feeding mechanism, a cap direction adjustment mechanism and a cap pressing mechanism, wherein the material storage mechanism comprises a material storage bin, the material storage bin comprises a rotatable turntable arranged therein, the turntable being circumferentially provided with grooves matching the test tube caps; the material feeding mechanism is connected to the material storage mechanism for conveying the test tube caps; the cap direction adjustment mechanism comprises a supporting block, the supporting block is provided with a accommodating cavity matching the test tube caps, the accommodating cavity is connected to the material feeding mechanism, the cap direction adjustment mechanism further comprises a test tube cap horizontal pushing assembly and a test tube cap adjustment assembly arranged on both sides of the accommodating cavity, the test tube cap horizontal pushing assembly being configured to push the test tube cap to the test tube cap adjustment assembly; the cap pressing mechanism is connected to the test tube cap adjustment assembly and is configured to drive the test tube cap adjustment assembly to reciprocate in a direction close to or away from the test tube.

[0006] As a preferred solution, the inner wall of the storage bin is connected with a shift block, which is connected to the middle and lower end of the inner wall of the storage bin. The shift block can be used to shift the posture of the rotating test tube cover in the storage bin to adjust its posture and facilitate its entry into the groove.

[0007] As a preferred solution, the upper end surface of the turntable is connected to a distribution tray, and the distribution tray is configured to be conical so that the test tube covers can be easily lowered.

[0008] As a preferred solution, the feeding mechanism includes a translation part and a downward movement part. The translation part is provided with a translation conveying trough, one end of the translation conveying trough extends to the bottom of the turntable, and the downward movement part is provided with a downward movement conveying trough connected to the translation conveying trough, and the downward movement conveying trough is arranged to be arc-shaped.

[0009] As a preferred solution, the translation portion includes a translation plate and an upper cover plate connected to the upper end surface of the translation plate, and the translation conveying trough is provided on the translation plate.

[0010] As a preferred embodiment, the turntable rotates by a predetermined distance between adjacent grooves each time it rotates. This motion can change the position of the test tube cap when it becomes stuck, indirectly stirring the test tube cap and allowing it to smoothly enter the groove.

[0011] As a preferred solution, the test tube cover horizontal pushing assembly includes a second driving mechanism and a pushing head connected to the second driving mechanism, and the second driving mechanism is used to push the pushing head to reciprocate in a direction close to or away from the accommodating cavity.

[0012] As a preferred solution, the second driving mechanism is a cylinder, and the cylinder is connected to a magnetic switch for detecting the stroke position of the piston.

[0013] As a preferred solution, the pusher head includes a pushing end, the outer diameter of which is smaller than the inner diameter of the test tube cover, so that the pushing end can extend into the test tube cover.

[0014] As a preferred solution, the test tube cover adjustment assembly includes a rotating column, which is provided with a test tube cover receiving portion, the test tube cover receiving portion and the test tube cover match in shape, and the rotating column is rotatable to adjust the orientation of the test tube cover.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the novel test tube capping device provided by the present invention can automatically install test tube caps on vacuum blood collection test tubes on the inspection production line, thereby realizing automated capping. In addition, the present invention also has the following beneficial effects:

[0016] 1) The novel test tube capping device provided by the present invention integrates the storage bin and the hopper into one, and the turntable conveying structure with circumferential grooves can significantly increase the storage space of the storage bin, and can store up to thousands of test tube caps at a time; and the structure of integrating the storage bin and the hopper can effectively reduce the overall height of the storage bin, making it easier to add materials.

[0017] 2) The feeding mechanism formed by connecting the translation part and the downward movement part has a simple structure. The structural setting of the translation conveying trough and the downward movement conveying trough can limit the transportation posture of the test tube caps and transport the test tube caps in an orderly manner.

[0018] 3) The mechanical structure, i.e., the telescopic length of the cylinder piston rod, is used to determine the orientation of the test tube cover, which makes the determination more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the new test tube capping device and the test tube conveying line of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall structure of a novel test tube capping device of the present invention;

[0021] Figure 3 This is a partial structural diagram of a novel test tube capping device of the present invention;

[0022] Figure 4 It is a bottom view of the material storage mechanism of the present invention;

[0023] Figure 5 for Figure 4 Cross-sectional view in the AA direction;

[0024] Figure 6 Schematic diagram of the structure of the translation part in the present invention;

[0025] Figure 7 Schematic diagram of the structure of the cover direction adjustment mechanism of the present invention;

[0026] Figure 8 Schematic diagram of the structure of the support block in the present invention;

[0027] Figure 9 Schematic diagram of the cooperation between the pressing block and the rotating column in the present invention;

[0028] Figure 10 It is a schematic diagram of the cooperation between the pressing block and the correction block in the present invention.

[0029] The meaning of each number in the figure is:

[0030] 1. Test tube conveying line; 2. Storage bin; 201. Bottom plate; 202. Baffle; 203. Turntable; 204. Groove; 205. Distributor plate; 206. Shifter; 3. Connecting plate; 4. First drive mechanism; 5. Transmission mechanism; 6. Drive plate; 7. Rotating shaft; 8. Bearing;

[0031] 9. Translation unit; 901. Translation plate; 902. Mounting step; 903. Translation conveyor trough; 904. Upper cover; 10. Lowering unit; 101. Lowering plate; 102. Lowering conveyor trough; 103. Lower cover;

[0032] 11. Support block; 111. Accommodating chamber; 12. Second driving mechanism; 13. Pushing head; 131. Connecting end; 132. Pushing end; 14. Rotating column; 15. Test tube cover receiving portion; 16. Third driving mechanism; 17. Magnetic switch; 27. Orientation plate; 28. Monitoring sensor;

[0033] 18. Pressing block; 19. Slide cylinder; 20. Hollow groove; 21. First through hole; 22. Second through hole; 23. First fixing bracket; 24. Side bracket; 25. Second fixing bracket; 26. Fixing bracket; 29. ​​Calibration block;

[0034] 30. Test tube clamping mechanism. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] See also Figure 1 The present invention discloses a novel test tube capping device, which is usually used in conjunction with a test tube conveying line 1 and is connected to the side end of the conveying line to automatically cap the test tubes conveyed by the conveying line. The novel test tube capping device includes a storage mechanism, a feeding mechanism, a capping direction adjustment mechanism, and a capping mechanism. The storage mechanism is used to store test tube cap materials and transfer the materials to the feeding mechanism. The feeding mechanism is connected to the storage mechanism and the capping direction adjustment mechanism respectively to transfer the materials to the capping direction adjustment mechanism in an orderly manner. The capping direction adjustment mechanism is used to determine and adjust the orientation of the test tube cap. The capping mechanism is used to press the test tube cap down and cover the test tube.

[0038] Combine Figure 2Specifically, the storage mechanism includes a storage bin 2, which further includes a bottom plate 201 and a fence 202 circumferentially surrounding the bottom plate 201. The bottom plate 201 is in the shape of a circular plate, and its bottom end is fixedly connected to the upper end of the conveying line through two connecting plates 3. The fence 202 has a predetermined height, and the bottom plate 201 and the fence 202 cooperate to form a accommodating cavity that can hold test tube caps. The storage bin 2 also includes a turntable 203 rotatably connected to the upper end face of the bottom plate 201 and a material distribution plate 205 connected to the upper end face of the turntable 203 for material distribution. The turntable 203 is in the shape of a circular plate, and the turntable 203 is provided with a plurality of grooves 204 along the circumference. The grooves 204 match the diameter of the test tube caps, so that the test tube caps in the accommodating cavity can be engaged in the grooves 204 in an upright state. The upper end surface of the turntable 203 is provided with an annular mounting groove, which is used to install the distribution tray 205. The mounting groove should be as close as possible to the position of the groove 204 so that the materials flowing into the distribution tray 205 can enter the groove 204. The distribution tray 205 is preferably set to a cone shape to make it easy for the test tube caps to descend. The test tube caps enter the groove 204 of the turntable 203, and the turntable 203 transports the test tube caps during the rotation. In this embodiment, the storage bin 2 integrates the functions of the storage bin and the hopper, so that the overall height of the storage bin 2 is reduced, which is convenient for feeding, and the structural setting method can significantly improve the storage capacity of the storage bin 2. The number of test tube caps can be as many as thousands, effectively reducing the cost of manual feeding.

[0039] Preferably, a shift block 206 is connected to the inner wall of the enclosure 202. The shift block 206 is connected to the lower end of the enclosure 202 and is close to the groove 204. The shift block 206 can be used to shift the posture of the test tube cover rotating in the storage bin 2 to adjust its posture and facilitate its entry into the groove 204.

[0040] Further, combined Figure 4 、 Figure 5 In this embodiment, the storage mechanism further includes a first drive mechanism 4 for driving the turntable 203 to rotate. The first drive mechanism 4 is connected to the bottom end of the turntable 203 and is used to drive the turntable 203 to rotate relative to the base plate 201. The first drive mechanism 4 includes a first motor and a drive disk 6 connected to the first motor via a transmission mechanism 5. The first motor is fixedly connected to the lower end surface of the base plate 201 via a motor adjustment plate. In this embodiment, the transmission mechanism 5 can be configured as a transmission method such as gear meshing or synchronous belt drive. The drive disk 6 is fixedly connected to a rotating shaft 7. The rotating shaft 7 passes through the base plate 201 from the bottom end of the base plate 201 and is fixedly connected to the lower end surface of the turntable 203. The rotating shaft 7 and the base plate 201 are connected via a bearing 8. The first motor drives the drive disk 6 to rotate, thereby driving the rotating shaft 7 and the turntable 203 to rotate.

[0041] See also Figure 2 、 Figure 3 as well as Figure 6The feeding mechanism includes a translation part 9 and a lower movement part 10 connected to the translation part 9. The translation part 9 includes a translation plate 901. The side end of the translation plate 901 is provided with a mounting step 902. The mounting step 902 is used to connect the bottom plate 201. Correspondingly, the bottom plate 201 is provided with a mounting notch that roughly matches the shape of the translation plate 901. The translation plate 901 is embedded in the mounting notch and is connected to the bottom plate 201 through the mounting step 902; the enclosure 202 is also provided with a mounting notch that matches the height of the translation plate 901 to provide space avoidance for the translation plate 901 in the vertical direction. Furthermore, the upper end surface of the translation plate 901 is provided with a translation conveyor trough 903 for conveying test tube caps. The translation conveyor trough 903 is horizontally arranged, with the bottom height of the trough being consistent with the height of the base plate 201. One end of the translation conveyor trough 903 extends below the turntable 203. That is, when the turntable 203 rotates to convey the test tube caps, the test tube caps in the groove 204 will flow into the translation conveyor trough 903 and out of the storage bin 2. The width of the translation conveyor trough 903 matches the outer diameter of the test tube caps, and the test tube caps can only pass through the translation conveyor trough 903 in an upright position. Preferably, the translation portion 9 also includes an upper cover plate 904, which is connected to the upper end surface of the translation plate 901 and is used to restrict test tube caps that have not fully entered the groove 204 of the turntable 203 from entering the translation conveyor trough 903 of the translation plate 901. It is worth noting that the turntable 203 rotates in such a way that it will retreat a predetermined distance every time it rotates a distance segment between adjacent grooves 204. This setting is to prevent the test tube cover that has not fully entered the groove 204 from being squeezed and stuck between the upper cover plate 904. This movement mode can change the posture of the test tube cover when it gets stuck, and indirectly stir the test tube cover, so that the test tube cover can smoothly enter the groove 204.

[0042] The lowering portion 10 is connected to the side end of the translation plate 901, which is the end away from the installation step 902. The lowering portion 10 includes a lowering plate 101, and a lowering conveying trough 102 is provided on the side of the lowering plate 101. The lowering conveying trough 102 is arranged in an arc shape, and is preferably arranged in a 1 / 4 arc shape. Its inlet end is connected to the outlet end of the translation conveying trough 903, and its outlet end is oriented toward the cover adjustment mechanism. When the test tube cap is slid from the upper inlet end of the translation conveying trough 903 to the lower outlet end, the posture of the test tube cap changes from an upright state to a horizontal state due to the arc track setting. The lowering portion 10 also includes a lower cover plate 103 connected to the side of the lowering plate 101. The lower cover plate 103 closes the lower conveying trough 102 to prevent the test tube cap from falling from the lower conveying trough 102. The test tube caps successively enter the translation conveying slot 903 of the translation portion 9 from the turntable 203 . The consecutive test tube caps push each other forward and are conveyed to the cap direction adjustment mechanism through the downward conveying slot 102 .

[0043] See also Figure 7 、 Figure 8The cover adjustment mechanism includes a support block 11 connected to the lower end of the downward moving plate 101. The support block 11 is square in shape and has a accommodating cavity 111 at its upper end. The accommodating cavity 111 is connected to the outlet end of the downward moving conveying trough 102, and the shape of the accommodating cavity 111 matches the test tube cap, that is, the test tube cap dropped from the downward moving conveying trough 102 can fall into the accommodating cavity 111 of the support block 11 in a horizontal state. Furthermore, the left and right sides of the accommodating cavity 111 are respectively provided with through holes that allow the test tube cap to pass through. The cover adjustment mechanism also includes a test tube cap horizontal push assembly and a test tube cap adjustment assembly respectively arranged on the left and right sides of the accommodating cavity 111. The positions of the test tube cap horizontal push assembly and the test tube cap adjustment assembly both correspond to the accommodating cavity 111. The test tube cap horizontal push assembly can push the test tube cap in the accommodating cavity 111 to the test tube cap adjustment assembly; the test tube cap adjustment assembly adjusts the test tube cap to the direction in which the cover opening faces the test tube.

[0044] Specifically, the test tube cover push assembly includes a second drive mechanism 12 and a push head 13 connected to the second drive mechanism 12. The second drive mechanism 12 is used to push the push head 13 to reciprocate in the direction of approaching or moving away from the accommodating chamber 111. The second drive mechanism 12 can adopt a linear drive mechanism including but not limited to a cylinder, a linear motor, etc. In this embodiment, the second drive mechanism 12 is preferably a cylinder, and the piston rod of the cylinder is connected to the push head 13. The piston rod of the cylinder can push the push head 13 to reciprocate. When the push head 13 moves in the direction close to the test tube cover, it can abut against the test tube cover. Further, the push head 13 includes a connecting end 131 and a pushing end 132, which are integrally formed. The connecting end 131 is used to connect to the piston rod, and the pushing end 132 is used to abut against the test tube cover. The outer diameter of the pushing end 132 should be smaller than the inner diameter of the test tube cover, that is, the pushing end 132 can extend into the inside of the test tube cover.

[0045] The test tube cap adjustment assembly includes a rotating column 14, which is provided with a test tube cap receiving portion 15. This portion extends through the width of the rotating column 14. The shape of the test tube cap receiving portion 15 matches that of the test tube cap and corresponds to the position of the accommodating cavity 111. The test tube cap in the accommodating cavity 111 is pushed into the test tube cap receiving portion 15 by the test tube cap horizontal push assembly. At this time, the test tube cap in the test tube cap receiving portion 15 is in the same horizontal position as it was in the accommodating cavity 111. In this embodiment, the rotating column 14 is rotatable. By rotating 90 degrees, the test tube cap rotates with the test tube cap receiving portion 15 to adjust to a vertical position. Rotation of the rotating column 14 allows the test tube cap receiving portion 15 to switch between a horizontal and vertical position. Furthermore, the test tube cap adjustment assembly also includes a third drive mechanism 16 for driving the rotation column 14 to rotate. The third drive mechanism 16 is preferably a motor. In this embodiment, it is configured as a second motor. The output shaft of the second motor is connected to one end of the rotation column 14, and the second motor drives the rotation column 14 to rotate. It is understood that the horizontal posture of the test tube cap within the test tube cap receiving portion 15 can be divided into two situations. That is, the direction of the test tube cap opening is random, and it can be oriented towards the two ends of the test tube cap receiving portion 15. According to the direction of the test tube cap opening, the output shaft of the second motor is controlled to rotate clockwise or counterclockwise to ensure that when the test tube cap receiving portion 15 is in the vertical state, the test tube cap opening is oriented toward the test tube. Similarly, it can be understood that the direction of the cover opening of the test tube cover in the accommodating chamber 111 is different, and the extension length of the piston rod of the above-mentioned cylinder is also different. Correspondingly, two magnetic switches 17 are connected to the cylinder body of the cylinder. The magnetic switch 17 corresponds to the stroke position of the piston, that is, the extension length of the piston rod is judged by sensing the stroke position of the piston through the magnetic switch 17, and the direction of the cover opening of the test tube cover is judged according to the extension length, and then the second motor is controlled to drive the rotating column 14 to rotate clockwise or counterclockwise.

[0046] according to Figure 2 、 Figure 3 , combined with Figure 9In this embodiment, the capping mechanism includes a pressing block 18 and a fourth drive unit connected to the pressing block 18. The rotating column 14 is connected to the interior of the pressing block 18. The fourth drive unit is used to drive the pressing block 18 to reciprocate toward or away from the test tube, thereby driving the test tube cap within the rotating column 14 to reciprocate toward or away from the test tube, thereby completing the capping and resetting of the pressing block 18. The fourth drive unit can be a linear drive mechanism such as a cylinder or a linear motor. In this embodiment, the fourth drive unit is preferably a slide cylinder 19 with higher guidance accuracy and greater load capacity to ensure accurate alignment between the test tube cap and the test tube. In this embodiment, the bottom of the fixed end of the slide cylinder 19 is fixedly connected to the conveyor line via a test tube clamping mechanism. Its slide end is fixedly connected to the pressing block 18, and the pressing block 18 is connected to the lower end of the slide end. Furthermore, the interior of the pressing block 18 is provided with a hollow groove 20 that matches the shape of the rotating column 14. The rotating column 14 is disposed within the hollow groove 20. The aforementioned second motor is fixedly connected to the pressing block 18. The side and bottom ends of the pressing block 18 are respectively provided with a first through hole 21 and a second through hole 22 that match the diameter of the test tube cap. The side end refers to the end facing the accommodating chamber 111. When the test tube cap receiving portion 15 of the rotating column 14 is in a horizontal state, the first through hole 21 matches the test tube cap receiving portion 15 and serves as an entry channel for the test tube cap. When the test tube cap receiving portion 15 is in a vertical state, the second through hole 22 matches the test tube cap receiving portion 15 and serves as a downward pressure channel for the test tube cap. It is worth noting that the fixed end of the slide cylinder 19 is connected to a first fixed bracket 23. The first fixed bracket 23 extends from both sides of the fixed end. Side brackets 24 are fixedly connected to both ends of the first fixed bracket 23. The other end of the side bracket 24 extends toward the support block 11. A second fixed bracket 25 is connected between the two side brackets 24. The side ends of the lowering plate 101 and the support block 11 are both fixedly connected to the second fixed bracket 25, and the second driving mechanism 12 is fixedly connected to the second fixed bracket 25 via a fixing bracket 26.

[0047] In one embodiment, the test tube cap adjustment assembly further includes an angle rotation monitoring unit, including an orientation plate 27 connected to one end of the rotating column 14 and a monitoring sensor 28. Specifically, the rotating column 14 is connected to the orientation plate 27 at the end away from the third drive mechanism 16. The end of the rotating column 14 connected to the orientation plate 27 extends outside the pressure block 18. The orientation plate 27 is disposed outside the pressure block 18 and is configured as a semicircular plate-like structure. The orientation plate 27 is coaxially disposed with the rotating column 14 and rotates synchronously. Two monitoring sensors 28 are provided, both connected to the side ends of the pressure block 18 and on the same side as the orientation plate 27. The two monitoring sensors 28 are arranged at 90 degrees. The two monitoring sensors 28 ensure that the rotating column 14 is rotated into place by monitoring the position of the orientation plate 27, thereby accurately aligning the test tube cap and the test tube.

[0048] See also Figure 10In one embodiment, the capping mechanism further includes a correction block 29 connected to the bottom end of the pressing block 18 via a torsion spring. Two correction blocks 29 are provided and are oppositely arranged on either side of the second through hole 22. The upper end surfaces of the two guide blocks have relatively circular contours and are coaxial with the second through hole 22. The circular contours of the upper end surfaces of the two correction blocks 29 match the outer diameter of the test tube, that is, the diameter of the circular contour is smaller than the diameter of the second through hole 22. When the test tube cap receiving portion 15 is in a vertical state, the test tube cap located in the test tube cap receiving portion 15 will not fall out of the test tube cap receiving portion 15 due to the obstruction of the two correction blocks 29. When the test tube cap receiving portion 15 is pressed downward, the two correction blocks 29 are smoothly sleeved on the outside of the test tube, and then the test tube cap is capped on the test tube by the pressing block 18. When the pressing block 18 moves upward, because the correction blocks 29 are connected by the torsion spring, the correction blocks 29 will rotate and open due to the elastic force to adapt to the test tube cap, and will not push the capped test tube cap out of the test tube. In a preferred embodiment, the lower end surfaces of the two calibration blocks 29 have relatively circular contours and are coaxial with the second through hole 22. The diameter of the circular contour of the lower end surfaces is larger than the diameter of the circular contour of the upper end surfaces. Currently, the quality of test tubes used in medical equipment varies. Test tubes with a certain degree of curvature may pass quality inspection and be put into use. During use, such test tubes may cause misalignment with the test tube cap due to their slight curvature. The structure of the calibration block 29, i.e., the relatively circular diameter of the lower end surface of the calibration block 29 is larger than the outer diameter of the test tube, can be utilized. Furthermore, the internal bevel between the upper and lower end surfaces of the calibration block 29 can be used to guide the curved test tube, thereby smoothly fitting the calibration block 29 onto the outside of the test tube and ensuring accurate alignment between the test tube and the test tube cap.

[0049] The novel test tube capping device provided by the present invention also includes a test tube clamping mechanism 30 arranged below the capping mechanism. The test tube clamping mechanism 30 is used to fix the test tube to be capped to ensure the stability of the test tube during the capping process. The test tube clamping mechanism 30 includes pneumatic fingers and a test tube clamp connected to the pneumatic fingers. The test tube clamp is arranged at the lower end of the second through hole 22 to ensure that the test tube cap and the test tube are relatively accurately aligned.

[0050] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel test tube capping device, characterized in that: include: A material storage mechanism, the material storage mechanism comprising a material storage bin (2), the material storage bin (2) comprising a rotatable turntable (203) disposed therein, the turntable (203) being circumferentially provided with grooves (204) matching the test tube caps, the turntable (203) being rotated in such a manner that each time it rotates through a distance segment between adjacent grooves (204), it retracts in the reverse direction by a predetermined distance; A feeding mechanism, the feeding mechanism and the storage mechanism are connected and used for conveying test tube caps; the feeding mechanism includes a translation part (9) and a downward movement part (10); the translation part (9) is provided with a translation conveying trough (903), one end of the translation conveying trough (903) extends below the turntable (203); the downward movement part (10) is provided with a downward movement conveying trough (102) connected to the translation conveying trough (903); the translation part (9) includes a translation plate (901) and an upper cover plate (904) connected to the upper end surface of the translation plate (901); the translation conveying trough (903) is provided on the translation plate (901); The cover direction adjustment mechanism comprises a support block (11), the support block (11) is provided with a receiving cavity (111) matching the test tube cover, the receiving cavity (111) is connected to the feeding mechanism, the cover direction adjustment mechanism further comprises a test tube cover horizontal pushing assembly and a test tube cover adjustment assembly arranged on both sides of the receiving cavity (111), the test tube cover horizontal pushing assembly is configured to push the test tube cover to the test tube cover adjustment assembly; A capping mechanism connected to the test tube cap adjustment assembly and configured to drive the test tube cap adjustment assembly to reciprocate toward or away from the test tube; The test tube cover horizontal pushing assembly comprises a second driving mechanism (12) and a pushing head (13) connected to the second driving mechanism (12), wherein the second driving mechanism (12) is used to push the pushing head (13) to reciprocate in a direction close to or away from the accommodating chamber (111); the second driving mechanism (12) is a cylinder, and the cylinder is connected to a magnetic switch (17) for detecting the stroke position of the piston; the pushing head (13) comprises a pushing end (132), and the outer diameter of the pushing end (132) is smaller than the inner diameter of the test tube cover.

2. The novel test tube capping device according to claim 1, characterized in that: The inner wall of the material storage bin (2) is connected to a shifting block (206), and the shifting block (206) is connected to the middle and lower end of the inner wall of the material storage bin (2).

3. The novel test tube capping device according to claim 1, characterized in that: The upper end surface of the rotating disk (203) is connected to a material distribution disk (205), and the material distribution disk (205) is configured to be conical.

4. The novel test tube capping device according to claim 1, characterized in that: The downward conveying trough (102) is configured to be arc-shaped.

5. The novel test tube capping device according to claim 1, characterized in that: The test tube cover adjustment assembly comprises a rotating column (14), the rotating column (14) is provided with a test tube cover receiving portion (15), the test tube cover receiving portion (15) matches the shape of the test tube cover, and the rotating column (14) is rotatable for adjusting the orientation of the test tube cover.

Images