Automatic capping and uncapping device for microwave reaction test tubes

Abstract

The invention discloses an automatic capping and decapping device for a microwave reaction test tube. The microwave reaction test tube comprises a test tube with a boss on the top and a sealing cover with an annular protrusion on the side. The automatic capping and decapping device comprises a frame, a multi-station indexing module is arranged on the frame, the multi-station indexing module comprises an indexing fixing seat, a test tube disc and a clamping cylinder, a plurality of test tube through grooves extending downward, distributed in an annular shape and provided with limiters are arranged on the test tube disc, the depth of the test tube through grooves is shorter than the depth of the test tube, and no groove wall is arranged on the side of each test tube through groove away from the center of the test tube disc, a driving motor is arranged on the indexing fixing seat, a high station and a low station are arranged on the indexing fixing seat, the high station and the low station are smoothly connected, the top of the low station is separated from the bottom of the test tube through groove, and the top of the high station is tangent to the bottom of the test tube through groove, the clamping cylinder is used for fixing the test tube located at the high station in the test tube disc, and the frame is also provided with a capping module, a capping module and a decapping module.

Description

Technical Field

[0001] The invention relates to the field of automatic capping and uncapping, and in particular to an automatic capping and uncapping device for microwave reaction test tubes. Background Art

[0002] During the microwave synthesis reaction process, the sample needs to be placed in a special microwave reaction tube, and a sealing cover needs to be added to ensure the sealing during the reaction. After the reaction is completed, the sample needs to be transferred to other containers, so the sealing cover on the tube needs to be removed. However, due to the particularity of the microwave reaction process, the traditional metal sealing cover is not suitable as a sealing cover for the microwave reaction tube. Instead, a plastic cover is used as the sealing cover, and a circle of protrusions is provided under the plastic cover, which increases the difficulty of manual capping and removal. Therefore, automatic capping and removal equipment is required for capping and removal.

[0003] Existing capping and uncapping equipment for test tubes, such as the fully automatic test tube capping device and uncapping device disclosed in Chinese patent publication number CN113582108A, includes a capping fixed bracket, a capping driving mechanism arranged on the capping fixed bracket, and a capping placement mechanism and a capping positioning mechanism connected to the capping driving mechanism. Driven by the capping driving mechanism, the capping placement mechanism realizes vertical and horizontal movement on the capping fixed bracket; driven by the capping driving mechanism, the capping positioning mechanism realizes vertical movement on the capping fixed bracket, and the capping placement mechanism realizes horizontal movement on the capping fixed bracket. The structure includes an electromagnet cover push-pull module and a cover clamping module arranged on the cover removal drive mechanism, the cover clamping module includes a cover shell, a cover push rod connected to the cover shell in a vertical direction for sliding, and a cover clamping block arranged on the inner side wall of the cover shell, the cover clamping block is elastically connected to the inner side wall of the cover shell, and the cover push rod is connected to the electromagnet cover push-pull module;: the inner side of the cover clamping block is provided with a first concave arc surface, the bottom of the cover clamping block is provided with a first chamfer, a cover limit slider is provided in the cover shell, the cover limit slider is sleeved on the cover push rod, and the cover limit slider is connected to the cover shell A capping limit spring is arranged between the tops of the inner cavities; the capping positioning mechanism comprises a capping positioning pin and a capping roller arranged on the capping driving mechanism, the capping positioning pin and the capping roller are arranged on the same horizontal plane at a certain distance, the capping driving mechanism comprises a capping vertical motor I, a capping vertical motor II, a capping vertical sliding block and a capping positioning sliding block vertically connected to the capping fixed bracket for sliding movement, a capping sliding block horizontally connected to the capping vertical sliding block for sliding movement, and a capping horizontal motor arranged on the capping sliding block, a capping vertical motor I and a capping vertical motor II, A capping gear I and a capping gear II are respectively arranged on the transmission shaft of the vertical motor II, a capping rack I and a capping rack II are respectively vertically arranged on the capping vertical sliding block and the capping positioning sliding block, and the capping gear I and the capping gear II are respectively connected with the capping rack I and the capping rack II; a capping gear III is arranged on the transmission shaft of the capping horizontal motor, a capping rack III is horizontally arranged on the capping vertical sliding block, and the capping gear III is connected with the capping rack III; an electromagnet capping push-pull module and a capping clamping module are arranged on the capping sliding block, and a capping positioning pin and a capping roller are arranged on the capping positioning sliding block.

[0004] However, the capping and decapping equipment disclosed in the above patent is large in size and complex in structure, and cannot be applied to desktop environments such as laboratories, and the entire operation process is relatively cumbersome. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the present invention discloses an automatic capping and decapping device for microwave reaction test tubes.

[0006] An automatic capping and uncapping device for a microwave reaction test tube, the microwave reaction test tube comprises a test tube with a boss on the top and a sealing cover with an annular protrusion on the side. When the sealing cover is installed on the test tube, the annular protrusion is located at an end of the sealing cover away from the test tube. The automatic capping and uncapping device comprises a frame, and a multi-station indexing module is provided on the frame.

[0007] The multi-station indexing module comprises an indexing fixed seat, on which a rotatable test tube tray for placing test tubes is disposed, and the multi-station indexing module is also provided with a clamping cylinder for clamping the test tubes in the test tube tray.

[0008] The test tube tray is provided with a plurality of test tube slots extending downward, distributed in a ring shape and provided with limiters, the depth of the test tube slots is shorter than the depth of the test tube, and no slot wall is provided on the side of each test tube slot away from the center of the test tube tray, a driving motor for driving the test tube tray to rotate is provided at the center of the indexing fixed seat, a high station and a low station are provided on the indexing fixed seat, the high station and the low station are smoothly connected, the top of the low station is separated from the bottom of the test tube slot, and the top of the high station is tangent to the bottom of the test tube slot, and the clamping cylinder is used to fix the test tube at the high station in the test tube tray,

[0009] A capping module for placing the sealing cover on the top of the test tube and a capping module for pressing the sealing cover on the top of the test tube are arranged on the frame and above the lower station.

[0010] The frame is also provided with a cover removing module for removing the sealing cover pressed on the top of the test tube from the top of the test tube. The sealing cover removed by the cover removing module is the sealing cover on the test tube located in the test tube slot above the high station and clamped by the clamping cylinder.

[0011] Specifically, when capping, the test tube is first placed in the test tube slot in the test tube tray, the sealing cover is placed in the avoidance slot of the feeding turntable of the capping module, and then the test tube tray and the feeding turntable start to rotate. When the test tube slot with the test tube rotates to just below the feeding through hole, the feeding turntable also just transports the sealing cover to above the feeding through hole. At this time, the sealing cover falls from the feeding through hole to the sealing cover placement section of the test tube slot, and the test tube tray continues to rotate to below the capping module, and the pressing cylinder of the capping module is started to press the sealing cover on the top of the test tube. After the tightening is completed, the test tube disk continues to rotate to the high position, and the test tube at the high position is pushed out of the test tube slot, and then the cover removal module clamps the sealing cover or test tube to take the test tube with the sealing cover out of the test tube slot and send it to the reactor. After the reaction is completed, the test tube with the sealing cover is put back into the test tube slot at the high position, and the clamping cylinder is started. The clamping cylinder cooperates with the slot wall of the test tube slot to clamp the test tube, and then the clamping fingers clamp the sealing cover, and the clamping fingers move upward with the sealing cover to remove the sealing cover from the test tube, and then transfer the sealing cover to the collection tank.

[0012] The feeding turntable is provided with a number of avoidance grooves distributed in an annular shape, which, together with the structure of the test tube grooves distributed in an annular shape on the test tube disc, can effectively speed up the capping speed; the limiter in the test tube groove is a limiter platform, whose main function is to prevent the test tube from falling. This structure can effectively prevent the test tube from falling from the test tube groove on the one hand, and assist in capping on the other hand.

[0013] Preferably, the cap removal module comprises clamping fingers for clamping the sealing cap or the test tube, a driving member for driving the clamping fingers to move, and a three-dimensional displacement module fixed on the frame, and the clamping fingers and the driving member are both movably fixed on the three-dimensional displacement module.

[0014] Specifically, since the capping module not only needs to perform the capping process but also needs to transport the test tube, the clamping fingers need to be fixed on the three-dimensional displacement module.

[0015] Preferably, the clamping fingers are provided with a step matched with the sealing cover, and when the clamping fingers clamp the sealing cover, the annular protrusion of the sealing cover is located above the step.

[0016] Specifically, in the process of removing the cover, a large force needs to be applied to separate the sealing cover and the test tube from each other. In order to prevent the sealing cover from being unable to be removed due to the sliding between the clamping fingers and the outer wall of the sealing cover during the upward movement of the clamping fingers, a step structure is provided on the clamping fingers. When the clamping fingers clamp the sealing cover, the annular protrusion is located above the step. This structure can ensure that the sealing cover will not slip off the clamping fingers during the upward movement of the clamping fingers, thereby ensuring the success rate of removing the cover.

[0017] Preferably, the capping module comprises a feed fixing plate fixed on the frame and a feed turntable rotatably arranged on the feed fixing plate.

[0018] The feeding turntable is provided with a plurality of avoidance grooves for placing sealing covers, and the feeding fixed plate is provided with feeding through holes. The feeding turntable rotates on the feeding fixed plate with the sealing covers until the sealing covers fall from the feeding through holes.

[0019] Specifically, a rib is provided on the outer edge of the feed fixing plate, the height of the rib is the same as the thickness of the feed turntable, and a feed notch is also provided on the rib. When the empty avoidance slot is rotated to a position matching the feed notch, a new sealing cover can enter the avoidance slot from the feed notch.

[0020] Preferably, the capping module includes a fixing seat fixed on the frame and a pressing cylinder fixed on the fixing seat.

[0021] Preferably, the frame is a double-layer structure, including a base plate and a placement plate fixed to the base plate by connecting columns, the capping module, the capping module and the capping module are all fixed on the placement plate, the dividing fixing seat is fixed on the base plate, the top of the test tube tray and the top of the placement plate are located in the same plane, and the placement plate is also provided with a first avoidance hole for avoiding the test tube tray.

[0022] Preferably, the automatic capping and decapping device further comprises a test tube rack, and the placement plate is provided with a placement groove for limiting the position of the test tube rack on the placement plate.

[0023] Specifically, during the specific operation, a batch of test tubes with reagents are usually placed in a test tube rack, and then the test tubes in the test tube rack are capped one by one. Therefore, a placement slot structure is provided on the placement plate to fix the position of the test tube rack, so that the capping module can transfer the test tubes in the test tube rack to the test tube slots of the test tube tray.

[0024] Preferably, the automatic capping and decapping device further comprises a collecting trough for collecting the sealing caps, the collecting trough is placed on the bottom plate, and the placing plate is provided with a second avoidance hole adapted to the opening of the collecting trough.

[0025] Preferably, the test tube slot comprises a test tube placement section away from the top of the test tube tray and a sealing cover placement section close to the top of the test tube tray, the diameter of the sealing cover placement section is larger than the diameter of the test tube placement section, and the limiting member is arranged at the test tube placement section.

[0026] Specifically, under this structure, the capping module allows the sealing cover to fall into the sealing cover placement section, thereby ensuring the success rate of capping.

[0027] Compared with the prior art, the present invention is beneficial in that:

[0028] The multi-station indexing module is used in conjunction with the capping module, the capping module and the capping removal module to cap and press the test tubes in the test tube slot above the low station, and to remove the caps from the test tubes in the test tube slot above the high station. The capping removal module is also used to transfer the test tubes. The multi-station indexing module can carry multiple test tubes at the same time, and a capping, capping and capping production line is formed by rotating the station. In addition, each module is integrated on the frame, and the entire equipment is compact in structure and small in size, so it is suitable for being placed on a desktop for operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 An assembly diagram of the automatic capping and decapping device for microwave reaction test tubes provided by the present invention;

[0030] Figure 2 An assembly diagram of a placement plate and a capping module of an automatic capping and decapping device for microwave reaction test tubes provided by the present invention;

[0031] Figure 3 A parts diagram of the clamping fingers of the automatic capping and decapping device for microwave reaction test tubes provided by the present invention;

[0032] Figure 4 A three-dimensional diagram of a capping module of an automatic capping and decapping device for microwave reaction test tubes provided by the present invention;

[0033] Figure 5 A three-dimensional view of the capping module of the automatic capping and decapping device for microwave reaction test tubes provided by the present invention from another direction;

[0034] Figure 6 A three-dimensional diagram of a capping module of an automatic capping and decapping device for microwave reaction test tubes provided by the present invention;

[0035] Figure 7 A three-dimensional diagram of a multi-station indexing module of an automatic capping and decapping device for microwave reaction test tubes provided by the present invention;

[0036] Figure 8 A cross-sectional view of a multi-station indexing module of an automatic capping and decapping device for microwave reaction test tubes provided by the present invention;

[0037] Fig. 9 A three-dimensional diagram of a graduation fixing seat of an automatic capping and decapping device for microwave reaction test tubes provided by the present invention;

[0038] Fig.10 A stereoscopic diagram of a test tube and a sealing cover of the automatic capping and decapping device for microwave reaction test tubes provided by the present invention. DETAILED DESCRIPTION

[0039] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0040] like Figure 1 As shown, an automatic capping and uncapping device for microwave reaction test tubes, such as Fig.10 As shown, the microwave reaction test tube includes a test tube 10 with a boss 11 on the top and a sealing cover 20 with an annular protrusion 21 on the side. When the sealing cover 20 is installed on the test tube 10, the annular protrusion 21 is located at an end of the sealing cover 20 away from the test tube 10. The automatic capping and uncapping device includes a frame 30, and a multi-station indexing module 40 is provided on the frame 30.

[0041] like Figure 7-9 As shown, the multi-station indexing module 40 includes an indexing fixed seat 41, on which a rotatable test tube tray 42 for placing the test tube 10 is disposed, and the multi-station indexing module 40 is also provided with a clamping cylinder 43 for clamping the test tube 10 located in the test tube tray 42.

[0042] The test tube tray 42 is provided with a plurality of test tube slots 44 extending downward, arranged in a ring shape, and provided with limit members. The depth of the test tube slots 44 is shorter than the depth of the test tube 10. No slot wall is provided on the side of each test tube slot 44 away from the center of the test tube tray 42. A driving motor for driving the test tube tray 42 to rotate is provided at the center of the indexing fixed seat 41. A high station 45 and a low station 46 are provided on the indexing fixed seat 41. The high station 45 and the low station 46 are smoothly connected. The top of the low station 46 is separated from the bottom of the test tube slot 44, and the top of the high station 45 is tangent to the bottom of the test tube slot 44. The clamping cylinder 43 is used to fix the test tube 10 located at the high station 45 in the test tube tray 42.

[0043] A capping module 60 for placing the sealing cover 20 on the top of the test tube 10 and a capping module 70 for pressing the sealing cover 20 on the top of the test tube 10 are provided on the frame 30 and above the lower station 46.

[0044] The frame 30 is also provided with a cover removing module 50 for removing the sealing cover 20 pressed on the top of the test tube 10 from the top of the test tube 10. The sealing cover 20 removed by the cover removing module 50 is the sealing cover 20 on the test tube 10 located in the test tube groove 44 above the high station 45 and clamped by the clamping cylinder 43.

[0045] like Figure 2 , 3 As shown, the cover removal module 50 includes a clamping finger 51 for clamping the sealing cover 20 or the test tube 10, a driving member for driving the clamping finger 51 to move, and a three-dimensional displacement module 52 fixed on the frame 30, and the clamping finger 51 and the driving member are both movably fixed on the three-dimensional displacement module 52.

[0046] Since the capping module 50 not only needs to perform the capping process but also needs to transport the test tube 10 , the clamping fingers 51 need to be fixed on the three-dimensional displacement module 52 .

[0047] The clamping finger 51 is provided with a step 53 adapted to the sealing cover 20 . When the clamping finger 51 clamps the sealing cover 20 , the annular protrusion 21 of the sealing cover 20 is located above the step 53 .

[0048] In the process of removing the cover, a large force needs to be applied to separate the sealing cover 20 and the test tube 10 from each other. In order to prevent the sealing cover 20 from being unable to be removed due to the sliding between the clamping fingers 51 and the outer wall of the sealing cover 20 during the upward movement of the clamping fingers 51, a step 53 is provided on the clamping fingers 51. When the clamping fingers 51 clamp the sealing cover 20, the annular protrusion 21 is located above the step 53. This structure can ensure that the sealing cover 20 will not slip off the clamping fingers 51 during the upward movement of the clamping fingers 51, thereby ensuring the success rate of removing the cover.

[0049] like Figure 4 ,5 As shown, the capping module 60 includes a feed fixing plate 61 fixed on the frame 30 and a feed turntable 62 rotatably arranged on the feed fixing plate 61.

[0050] The feeding turntable 62 is provided with a plurality of avoidance grooves 63 for placing the sealing cover 20 , and the feeding fixed plate 61 is provided with a feeding through hole 64 . The feeding turntable 62 rotates on the feeding fixed plate 61 with the sealing cover 20 until the sealing cover 20 falls from the feeding through hole 64 .

[0051] The outer edge of the feed fixing plate 61 is provided with a rib, the height of which is the same as the thickness of the feed turntable 62, and a feed notch is also provided on the rib. When the empty avoidance groove 63 rotates to a position matching the feed notch, a new sealing cover 20 can enter the avoidance groove 63 from the feed notch.

[0052] like Figure 6 As shown, the capping module 70 includes a fixing seat 71 fixed on the frame 30 and a pressing cylinder 72 fixed on the fixing seat 71 .

[0053] The frame 30 is a double-layer structure, including a base plate 31 and a placement plate 33 fixed to the base plate 31 by connecting columns 32. The cover removal module 50, the cover adding module 60, and the cover pressing module 70 are all fixed on the placement plate 33. The dividing fixed seat 41 is fixed on the base plate 31. The top of the test tube tray 42 and the top of the placement plate 33 are located in the same plane. The placement plate 33 is also provided with a first avoidance hole 35 for avoiding the test tube tray 42.

[0054] The automatic capping and decapping device further comprises a test tube rack 81 , and a placement slot 34 for limiting the position of the test tube rack 81 on the placement plate 33 is provided on the placement plate 33 .

[0055] In the specific operation process, a batch of test tubes 10 with reagents are usually placed in the test tube rack 81, and then the test tubes 10 in the test tube rack 81 are capped one by one. Therefore, a placement groove 34 is provided on the placement plate 33 to fix the position of the test tube rack 81, so that the capping module 50 can transfer the test tubes 10 in the test tube rack 81 to the test tube through groove 44 of the test tube tray 42.

[0056] The automatic capping and decapping device further comprises a collecting trough 82 for collecting the sealing caps 20 . The collecting trough 82 is placed on the bottom plate 31 . The placing plate 33 is provided with a second avoidance hole 36 adapted to the opening of the collecting trough 82 .

[0057] The test tube slot 44 includes a test tube placement section away from the top of the test tube tray 42 and a sealing cover placement section close to the top of the test tube tray 42. The diameter of the sealing cover placement section is larger than the diameter of the test tube placement section, and a limiting member is provided at the test tube placement section.

[0058] In this structure, the capping module 60 allows the sealing cap 20 to fall into the sealing cap placement section, thereby ensuring the success rate of capping.

[0059] When using it specifically, when capping, first place the test tube 10 in the test tube slot 44 in the test tube tray 42, put the sealing cover 20 into the avoidance slot 63 of the feeding turntable 62 of the capping module 60, and then the test tube tray 42 and the feeding turntable 62 start to rotate. When the test tube slot 44 with the test tube 10 rotates to the bottom of the feeding through hole 64, the feeding turntable 62 also transports the sealing cover 20 to the top of the feeding through hole 64. At this time, the sealing cover 20 falls from the feeding through hole 64 to the sealing cover placement section of the test tube slot 44, and the test tube tray 42 continues to rotate to the bottom of the capping module 70, and the pressing cylinder 72 of the capping module 70 is started to press the sealing cover 20 on the top of the test tube 10. After completion, the test tube disk 42 continues to rotate to the high station 45, and the test tube 10 at the high station 45 is pushed out of the test tube slot 44, and then the cover removal module 50 clamps the sealing cover 20 or the test tube 10 to take the test tube 10 with the sealing cover 20 out of the test tube slot 44 and send it to the reactor. After the reaction is completed, the test tube 10 with the sealing cover 20 is put back into the test tube slot 44 at the high station 45, and the clamping cylinder 43 is started. The clamping cylinder 43 cooperates with the groove wall of the test tube slot 44 to clamp the test tube 10, and then the clamping finger 51 clamps the sealing cover 20. The clamping finger 51 moves upward with the sealing cover 20 to remove the sealing cover 20 from the test tube 10, and then the sealing cover 20 is transferred to the collection tank 82. In addition, the feed turntable 62 is provided with a plurality of avoidance grooves 63 distributed in an annular shape, which, together with the structure of the test tube grooves 44 distributed in an annular shape on the test tube plate 42, can effectively speed up the capping speed; the limiter in the test tube groove 44 is a limiter platform, and its main function is to prevent the test tube 10 from falling. This structure can effectively prevent the test tube 10 from falling from the test tube groove 44 on the one hand, and can assist in capping on the other hand.

Claims

1. An automatic capping and uncapping device for a microwave reaction test tube, the microwave reaction test tube comprising a test tube with a boss on the top and a sealing cover with an annular protrusion on the side, when the sealing cover is installed on the test tube, the annular protrusion is located at an end of the sealing cover away from the test tube, the automatic capping and uncapping device comprises a frame, characterized in that: The frame is provided with a multi-station indexing module. The multi-station indexing module comprises an indexing fixed seat, on which a rotatable test tube tray for placing test tubes is disposed, and the multi-station indexing module is also provided with a clamping cylinder for clamping the test tubes in the test tube tray. The test tube tray is provided with a plurality of test tube slots extending downward, distributed in a ring shape and provided with limiters, the depth of the test tube slots is shorter than the depth of the test tube, and no slot wall is provided on the side of each test tube slot away from the center of the test tube tray, a driving motor for driving the test tube tray to rotate is provided at the center of the indexing fixed seat, a high station and a low station are provided on the indexing fixed seat, the high station and the low station are smoothly connected, the top of the low station is separated from the bottom of the test tube slot, and the top of the high station is tangent to the bottom of the test tube slot, and the clamping cylinder is used to fix the test tube at the high station in the test tube tray, A capping module for placing the sealing cover on the top of the test tube and a capping module for pressing the sealing cover on the top of the test tube are arranged on the frame and above the lower station. The frame is also provided with a cover removing module for removing the sealing cover pressed on the top of the test tube from the top of the test tube. The sealing cover removed by the cover removing module is the sealing cover on the test tube located in the test tube slot above the high station and clamped by the clamping cylinder.

2. The automatic capping and decapping device for microwave reaction test tubes according to claim 1, characterized in that: The cap removal module comprises a clamping finger for clamping a sealing cap or a test tube, a driving member for driving the clamping finger, and a three-dimensional displacement module fixed on the frame, wherein the clamping finger and the driving member are both movably fixed on the three-dimensional displacement module.

3. The automatic capping and decapping device for microwave reaction test tubes according to claim 2, characterized in that: The clamping fingers are provided with a step matched with the sealing cover. When the clamping fingers clamp the sealing cover, the annular protrusion of the sealing cover is located above the step.

4. The automatic capping and decapping device for microwave reaction test tubes according to claim 1, characterized in that: The capping module comprises a feeding fixed plate fixed on the frame and a feeding turntable rotatably arranged on the feeding fixed plate. The feeding turntable is provided with a plurality of avoidance grooves for placing sealing covers, and the feeding fixed plate is provided with feeding through holes. The feeding turntable rotates on the feeding fixed plate with the sealing covers until the sealing covers fall from the feeding through holes.

5. The automatic capping and decapping device for microwave reaction test tubes according to claim 1, characterized in that: The capping module comprises a fixing seat fixed on the frame and a pressing cylinder fixed on the fixing seat.

6. The automatic capping and decapping device for microwave reaction test tubes according to claim 1, characterized in that: The frame is a double-layer structure, including a bottom plate and a placement plate fixed to the bottom plate by connecting columns, the capping module, the capping module and the capping module are all fixed on the placement plate, the dividing fixing seat is fixed on the bottom plate, the top of the test tube tray and the top of the placement plate are located in the same plane, and the placement plate is also provided with a first avoidance hole for avoiding the test tube tray.

7. The automatic capping and decapping device for microwave reaction test tubes according to claim 6, characterized in that: The automatic capping and decapping device further comprises a test tube rack, and the placement plate is provided with a placement groove for limiting the position of the test tube rack on the placement plate.

8. The automatic capping and decapping device for microwave reaction test tubes according to claim 6, characterized in that: The automatic capping and removing device further comprises a collecting trough for collecting the sealing caps, the collecting trough is placed on the bottom plate, and the placing plate is provided with a second avoidance hole adapted to the opening of the collecting trough.

9. The automatic capping and decapping device for microwave reaction test tubes according to claim 1, characterized in that: The test tube slot comprises a test tube placement section away from the top of the test tube tray and a sealing cover placement section close to the top of the test tube tray, the diameter of the sealing cover placement section is larger than the diameter of the test tube placement section, and the limiting member is arranged at the test tube placement section.

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