Test tube plug insertion device

Abstract

The invention provides a test tube plug inserting device which comprises an air-drying disc arranged above a supporting table, a plurality of clamping plates arranged on the top of the air-drying disc and a plurality of clamping plates arranged on the top of the air-drying disc, the transfer plate comprises a transverse plate and a plurality of vertical plates vertically connected to one side of the transverse plate, strip-shaped gaps are formed between the adjacent vertical plates, the transverse plate is connected with a rotating shaft through a connecting block, the rotating shaft is connected with a rotating mechanism, and when the transfer plate rotates towards the airing disc to be in a horizontal state, the multiple rows of test tube plugs are clamped into the multiple strip-shaped gaps respectively; the test tube rack is arranged above the movable end of a linear mechanism, the linear mechanism is arranged at the end, close to the rotating shaft, of the supporting table, and when the linear mechanism drives the test tube rack to move to the end, close to the supporting table, of the linear mechanism and the transfer plate drives the multiple rows of test tube plugs to rotate towards the test tube rack to be in a horizontal state, the multiple rows of test tube plugs are inserted into the multiple test tubes correspondingly; the downward pressing mechanism is arranged above the end, away from the supporting table, of the linear mechanism. The device can be used for simultaneously inserting a plurality of test tube plugs into a plurality of test tubes.

Description

Technical Field

[0001] The invention belongs to the technical field of experimental auxiliary equipment, and in particular relates to a test tube plug insertion device. Background Art

[0002] A test tube is a widely used glass container in the laboratory. It can be used to hold liquid or solid reagents, as a heating container, as a reactor for preparing a small amount of gas, and as a centrifugal container. In some experiments, it is necessary to insert a test tube plug at the top opening of the test tube to reduce the evaporation of water in the test tube and prevent other microorganisms in the air from entering the test tube and causing pollution. At present, the test tube plug is usually inserted into the test tube by the staff holding the test tube with one hand and inserting the test tube plug into the test tube with the other hand, and then the test tube is placed in a test tube rack for fixing. The problem with this method is that when a large number of test tubes need to be used in an experiment and all of them need to be inserted with test tube plugs, if the test tube plugs are still inserted manually individually, it is more labor-intensive and will affect the efficiency of the experiment. Therefore, it is necessary to make improvements and provide a device for quickly inserting multiple test tube plugs into multiple test tubes. Summary of the invention

[0003] In order to solve the above-mentioned defects of the prior art, the present application provides a test tube plug insertion device, which can insert multiple test tube plugs into multiple test tubes at the same time.

[0004] In order to achieve the above object, the present invention adopts the following technologies: A test tube plug insertion device, comprising: A drying tray is arranged above a support platform, and a plurality of receiving rings are arranged in a rectangular array on the top of the drying tray for placing inverted test tube plugs; The transfer plate comprises a transverse plate and a plurality of vertical plates arranged in an array and vertically connected to one side of the transverse plate. The width of the strip gap formed between adjacent vertical plates is greater than the diameter of the bottom of the test tube plug and smaller than the diameter of the top of the test tube plug. The transverse plate is connected to a rotating shaft through a connecting block. The rotating shaft is arranged at intervals at one end of the top of the drying plate. The rotating shaft is connected to a rotating mechanism. When the test tube plug is placed in the accommodating ring and the transfer plate is rotated toward the drying plate to a horizontal state, the multiple rows of test tube plugs are respectively inserted into the multiple strip gaps. The test tube rack is arranged above the movable end of a linear mechanism, the linear mechanism is arranged at one end of the support table close to the rotating shaft, the movable end of the linear mechanism moves in a direction parallel to the length direction of the drying plate, and a plurality of fixed parts are arranged in a rectangular array on the test tube rack for placing test tubes. When the linear mechanism drives the test tube rack to move to one end of the linear mechanism close to the support table, and the transfer plate drives the multiple columns of test tube plugs to rotate toward the test tube rack to a horizontal state, the multiple columns of test tube plugs are respectively inserted into the multiple test tubes placed on the multiple fixed parts, and the test tube plugs are pushed upward by the test tubes to separate from the inner side of the vertical plate; The pressing mechanism is arranged above the end of the linear mechanism away from the supporting platform and is used to press the test tube plug into the test tube.

[0005] Specifically, two pairs of vertical telescopic rods are provided on the support platform, the top of the telescopic rods is connected to the bottom of a support plate, the bottom of the support plate is connected to the telescopic end of a lifting mechanism, the lifting mechanism is fixed to the support platform, and the drying tray is arranged above the support platform.

[0006] Specifically, two pairs of vertically arranged angle steels are symmetrically arranged on the support platform, and the support plate and the drying tray are slidably arranged between the two pairs of angle steels.

[0007] Specifically, a first filter hole is provided on the drying plate, and a second filter hole is provided at the bottom of the side surface of the accommodating ring.

[0008] Specifically, the test tube rack includes a fixed frame and a fixed plate. A plurality of fixed plates are arranged in a vertical array in the fixed frame. Through holes matching the outer diameter of the test tube are provided on the fixed plates in a rectangular array. A plurality of circular grooves are provided in a rectangular array at the bottom of the fixed frame. The axial directions of the plurality of circular grooves are the same as those of the plurality of through holes. Rubber gaskets are provided in the circular grooves.

[0009] Specifically, a clamping groove is provided at the bottom of the fixed frame, and a protrusion matching the clamping groove is provided at the top of the movable end of the linear mechanism.

[0010] Specifically, the linear mechanism is arranged in a U-shaped bottom plate, and strip baffles are arranged on both sides of the U-shaped bottom plate. The length direction of the baffles is parallel to the length direction of the drying tray, the height of the strip baffles is higher than the height of the U-shaped bottom plate, and the distance between the two sides of the U-shaped bottom plate matches the width of the test tube rack.

[0011] Specifically, the linear mechanism includes a pair of slides, a first rack, and a drive motor. The first rack is slidably connected between the pair of slides along the length direction of the slides. The pair of slides are fixed in the U-shaped bottom plate. The slides are arranged parallel to the baffle. The bottom of the first rack is meshed with a gear, and the output shaft of the drive motor passes through a slide and is connected to the gear.

[0012] Specifically, the pressing mechanism includes a fixed frame, a pressure plate, a first cylinder, and a limit plate. The fixed frame is arranged on both sides of the linear mechanism. The telescopic end of the first cylinder passes downward through the top of the fixed frame and is connected to the pressure plate. The bottom of the pressure plate is connected to a plurality of vertically arranged springs in a rectangular array. The bottom of each spring is connected to a push column. A plurality of limit holes matching the diameters of the push columns are provided on the limit plate in a rectangular array. The push column is slidably arranged in the limit hole. Both sides of the limit plate are connected to both sides of the fixed frame. When the linear mechanism drives the test tube rack to move to the end of the linear mechanism away from the support platform, the multiple test tubes placed on the test tube rack are in the same axial direction as the multiple push columns.

[0013] Specifically, the rotating mechanism includes a second rack, a gear ring, and a second cylinder. The rotating shaft is rotatably connected between a pair of support rods. The gear ring is sleeved on one end of the rotating shaft. The second rack is meshed with the gear ring. The telescopic end of the second cylinder is connected to one end of the second rack.

[0014] The beneficial effects of the present invention are: 1. After cleaning, the used test tube plugs can be placed in the receiving ring on the drying tray for separation and drying. When the test tube plugs need to be used, the multiple test tube plugs in the receiving ring can be quickly transferred to the multiple test tubes on the test tube rack through the transfer plate, and then the test tube plugs can be pressed into the test tubes through the pressing mechanism.

[0015] 2. The push column moves downward to press multiple test tube plugs into the test tubes at the same time. Because a spring is provided between the push column and the pressure plate, a buffer can be generated when the push column presses the test tube plugs to prevent the test tubes from being damaged by excessive thrust. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the overall structure of the device according to an embodiment of the present application.

[0017] Figure 2 It is a partial structural stereogram of the device according to an embodiment of the present application.

[0018] Figure 3 This is a structural stereogram of the support table and the drying tray in the device of an embodiment of the present application.

[0019] Figure 4 for Figure 1 Enlarged view of part B in the middle.

[0020] Figure 5 for Figure 1 Enlarged view of part A in the middle.

[0021] Figure 6 It is a structural stereogram of a test tube rack in the device of an embodiment of the present application.

[0022] Figure 7 This is a structural stereogram of the test tube rack in the device of an embodiment of the present application from another perspective.

[0023] Figure 8 It is a structural stereogram of another part of the device according to an embodiment of the present application.

[0024] Fig. 9 It is a side view of a partial structure of the device according to an embodiment of the present application.

[0025] Fig.10 for Fig. 9 Enlarged view of middle C.

[0026] Figure numerals: drying tray-1, support table-2, test tube plug-3, transfer plate-4, rotating shaft-5, test tube rack-6, rotating mechanism-7, linear mechanism-8, pressing mechanism-9, test tube-10, accommodating ring-101, first filter hole-102, second filter hole-1011, telescopic rod-201, support plate-202, lifting mechanism-203, angle steel-204, horizontal plate-401, vertical plate-402, connecting block-4011, strip gap-4021, fixing frame-601, fixing plate-6 02, through hole-6021, circular groove-6011, rubber gasket-603, snap-in groove-6012, second rack-701, gear ring-702, second cylinder-703, support rod-704, bump-801, slide plate-802, first rack-803, drive motor-804, gear-805, U-shaped bottom plate-806, strip baffle-807, fixing frame-901, pressure plate-902, first cylinder-903, limit plate-904, push column-905, spring-906. DETAILED DESCRIPTION

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the implementation modes of the present invention are described in detail below with reference to the accompanying drawings. However, the embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] The present application embodiment provides a test tube plug insertion device, such as Figure 1-Figure 10 As shown, it includes a drying tray 1, a transfer plate 4, a test tube rack 6, a pressing mechanism 9, etc.

[0029] Specifically, the drying tray 1 is arranged above a supporting platform 2, and a plurality of accommodating rings 101 are arranged in a rectangular array on the top of the drying tray 1. The inner diameter of the accommodating ring 101 matches the diameter of the top of the test tube plug 3 and is used to place the inverted test tube plugs 3; the transfer plate 4 includes a transverse plate 401 and a plurality of vertical plates 402 arranged in an array and vertically connected to one side of the transverse plate 401, and the width of the strip gap 4021 formed between adjacent vertical plates 402 is greater than the diameter of the bottom of the test tube plug 3 and smaller than the diameter of the top of the test tube plug 3. The transverse plate 401 is connected to a rotating shaft 5 through a connecting block 4011. The rotating shaft 5 is spaced apart at one end of the top of the drying tray 1, and the rotating shaft 5 is connected to a rotating mechanism 7. When the test tube plugs 3 are placed in the accommodating ring 101 and the transfer plate 4 is rotated to a horizontal state toward the drying tray 1, a plurality of rows of test tube plugs 3 are The heads 3 are respectively inserted into multiple strip-shaped gaps 4021; the test tube rack 6 is arranged above the movable end of a linear mechanism 8, and the linear mechanism 8 is arranged at one end of the support platform 2 close to the rotating shaft 5. The moving direction of the movable end of the linear mechanism 8 is parallel to the length direction of the drying tray 1. A plurality of fixed parts are arranged in a rectangular array on the test tube rack 6 for placing test tubes 10. When the linear mechanism 8 drives the test tube rack 6 to move to one end of the linear mechanism 8 close to the support platform 2, and the transfer plate 4 drives the multiple rows of test tube plugs 3 to rotate toward the test tube rack 6 to a horizontal state, the multiple rows of test tube plugs 3 are respectively inserted into the multiple test tubes 10 placed on the multiple fixed parts, and the test tube plugs 3 are pushed upward by the test tubes 10 to separate from the vertical plate 402; the pressing mechanism 9 is arranged above the end of the linear mechanism 8 away from the support platform 2, and is used to press the test tube plugs 3 into the test tubes 10.

[0030] In actual use, the cleaned test tube plugs 3 are placed in an inverted manner in the receiving ring 101 on the drying tray 1 for drying. When the test tube plugs 3 are needed for experiments, the drying tray 1 and the test tube plugs 3 are placed above the support table 2, and then a plurality of test tubes 10 are placed in the fixed part of the test tube rack 6, and then the test tube rack 6 is placed above the movable end of the linear mechanism 8, and the linear mechanism 8 is controlled to drive the test tube rack 6 to move to the end of the linear mechanism 8 close to the drying tray 1, and then the rotating mechanism 7 is controlled to drive the transfer plate 4 to rotate toward the drying tray 1 to a horizontal state. The multiple rows of test tube plugs 3 are inserted into the multiple strip gaps 4021, and then the rotating mechanism 7 is controlled to drive the transfer plate 4 to rotate toward the test tube rack 6 to a horizontal state. At this time, the sides of the test tube plugs 3 in the strip gaps 4021 will abut against the tops of the test tubes 10 and be pushed upward and separated from the vertical plate 402. The linear mechanism 8 is controlled to drive the test tube rack 6 to move toward the end of the linear mechanism 8 away from the drying tray 1, so that the test tubes 10 and the test tube plugs 3 can be moved below the pressing mechanism 9. Finally, the pressing mechanism 9 is controlled to press the multiple test tube plugs 3 into the test tubes 10.

[0031] During the process of the transfer plate 4 driving the test tube plug 3 to rotate toward the test tube rack 6, because the test tube plug 3 is in the receiving ring 101, the test tube plug 3 may be tilted at a certain angle, which may affect the subsequent entry of the test tube plug 3 into the test tube 10. Figure 3 The support platform 2 is provided with two pairs of vertical telescopic rods 201, the top of the telescopic rods 201 is connected to the bottom of a support plate 202, the bottom of the support plate 202 is connected to the telescopic end of a lifting mechanism 203, the lifting mechanism 203 is fixed to the support platform 2, and the drying tray 1 is arranged above the support platform 2. Before the rotating mechanism 7 is controlled to drive the transfer plate 4 to rotate toward the test tube rack 6, the lifting mechanism 203 is first controlled to drive the support plate 202 to move downward, and the drying tray 1 will move downward synchronously due to the action of gravity, so that the accommodating ring 101 can be separated from the test tube plug 3, thereby preventing the test tube plug 3 from being deflected during the subsequent rotation of the transfer plate 4.

[0032] For details, see Figure 3 The support platform 2 is symmetrically provided with two pairs of vertically arranged angle steels 204, and the support plate 202 and the drying tray 1 are both slidably arranged between the two pairs of angle steels 204. With this arrangement, when placing the drying tray 1, the drying tray 1 can be quickly aligned by placing it between the two pairs of angle steels 204, and the stability of the drying tray 1 during the up and down movement can be improved. Figure 3 A first filter hole 102 is provided on the drying tray 1, and a second filter hole 1011 is provided at the bottom of the side of the accommodating ring 101. After the cleaned test tube plug 3 is placed in the accommodating ring 101, the water gathered at the bottom of the accommodating ring 101 during the drying process can flow out through the second filter hole 1011, and then flow out through the first filter hole 102, thereby improving the drying efficiency.

[0033] For details, see Figure 4 The rotating mechanism 7 includes a second rack 701, a ring gear 702, and a second cylinder 703. The rotating shaft 5 is rotatably connected between a pair of support rods 704. The ring gear 702 is sleeved on one end of the rotating shaft 5. The second rack 701 is meshed and connected with the ring gear 702. The telescopic end of the second cylinder 703 is connected to one end of the second rack 701. When the telescopic end of the second cylinder 703 is fully pushed out, the transfer plate 4 rotates to be directly above the drying tray 1. When the telescopic end of the second cylinder 703 is fully retracted, the transfer plate 4 rotates to be directly above the test tube rack 6.

[0034] Preferably, see Figure 1 , Figure 5The pressing mechanism 9 includes a fixing frame 901, a pressing plate 902, a first cylinder 903, and a limiting plate 904. The fixing frame 901 is arranged on both sides of the linear mechanism 8. The telescopic end of the first cylinder 903 passes downward through the top of the fixing frame 901 and is connected to the pressing plate 902. The bottom of the pressing plate 902 is connected with a plurality of vertically arranged springs 906 in a rectangular array. The bottom of the spring 906 is connected with a push column 905. The limiting plate 904 is provided with a plurality of limiting holes in a rectangular array that match the diameters of the pushing column 905. The pushing column 905 is slidably arranged in the limiting hole. The limiting plate 904 The two sides are connected to the two sides in the fixed frame 901. When the linear mechanism 8 drives the test tube rack 6 to move to the end of the linear mechanism 8 away from the support platform 2, the multiple test tubes 10 placed on the test tube rack 6 are in the same axial direction as the multiple push columns 905. At this time, the telescopic end of the first cylinder 903 is controlled to be pushed out, so that the push column 905 moves downward to press the multiple test tube plugs 3 into the test tube 10 at the same time. Because a spring 906 is provided between the push column 905 and the pressure plate 902, a buffer can be generated when the push column 905 presses the test tube plug 3 to prevent the test tube 10 from being damaged by excessive thrust.

[0035] For details, see Figure 6 , Figure 7 The test tube rack 6 includes a fixed frame 601 and a fixed plate 602. A plurality of fixed plates 602 are arranged in a vertical array in the fixed frame 601. Through holes 6021 matching the outer diameter of the test tube 10 are provided in a rectangular array on the fixed plates 602. A plurality of circular grooves 6011 are provided in a rectangular array at the bottom of the fixed frame 601. The axial directions of the plurality of circular grooves 6011 and the plurality of through holes 6021 are the same. Rubber gaskets 603 are provided in the circular grooves 6011 to provide buffering when the test tube 10 is subjected to downward pressure. More specifically, a snap-fit ​​groove 6012 is provided at the bottom of the fixed frame 601. A convex block 801 matching the snap-fit ​​groove 6012 is provided at the top of the movable end of the linear mechanism 8. When the test tube rack 6 is placed above the linear mechanism 8, the alignment can be completed by the cooperation between the convex block 801 and the snap-fit ​​groove 6012, and the stability of the test tube rack 6 during movement can be improved.

[0036] Preferably, see Figure 8 The linear mechanism 8 is arranged in a U-shaped bottom plate 806. Both sides of the U-shaped bottom plate 806 are provided with strip baffles 807. The length direction of the baffles is parallel to the length direction of the drying tray 1. The height of the strip baffles 807 is higher than the height of the U-shaped bottom plate 806. The distance between the two sides of the U-shaped bottom plate 806 matches the width of the test tube rack 6. When aligning the clamping groove 6012 with the protrusion 801, the test tube rack 6 can be placed between the two baffles first, and then the test tube rack 6 can be pushed along the length direction of the baffle until the clamping groove 6012 and the protrusion 801 are aligned, which can improve the alignment efficiency. For details, refer to Figure 8-Figure 10The linear mechanism 8 includes a pair of slides 802, a first rack 803, and a drive motor 804. The first rack 803 is slidably connected between the pair of slides 802 along the length direction of the slides 802. The pair of slides 802 are fixed in the U-shaped bottom plate 806. The slides 802 are arranged parallel to the baffle. The bottom of the first rack 803 is meshed with a gear 805. The output shaft of the drive motor 804 passes through a slide 802 and is connected to the gear 805. By controlling the drive motor 804 to drive the gear 805 to rotate, the first rack 803 can be driven to move, thereby driving the test tube rack 6 to move.

[0037] The above description is only a preferred embodiment of the present invention, and is not intended to be the only one or to limit the present invention. Those skilled in the art should understand that various changes or equivalent substitutions made to the present invention without departing from the scope of the present invention are within the scope of protection of the present invention.

Claims

1. A test tube plug insertion device, characterized in that: include: A drying tray (1) is arranged above a support platform (2); a plurality of accommodating rings (101) are arranged in a rectangular array on the top of the drying tray (1) for accommodating inverted test tube plugs (3); The transfer plate (4) comprises a transverse plate (401) and a plurality of vertical plates (402) arranged in an array and vertically connected to one side of the transverse plate (401); the width of the strip-shaped gaps (4021) formed between adjacent vertical plates (402) is greater than the diameter of the bottom of the test tube plugs (3) and less than the diameter of the top of the test tube plugs (3); the transverse plate (401) is connected to a rotating shaft (5) via a connecting block (4011); the rotating shaft (5) is arranged at intervals at one end of the top of the drying tray (1); the rotating shaft (5) is connected to a rotating mechanism (7); when the test tube plugs (3) are placed in the accommodating ring (101) and the transfer plate (4) is rotated toward the drying tray (1) to a horizontal state, the plurality of rows of test tube plugs (3) are respectively inserted into the plurality of strip-shaped gaps (4021); The test tube rack (6) is arranged above the movable end of a linear mechanism (8), the linear mechanism (8) being arranged at one end of the support platform (2) close to the rotating shaft (5), the movable end of the linear mechanism (8) moving in a direction parallel to the length direction of the drying plate (1), the test tube rack (6) being provided with a plurality of fixed parts in a rectangular array for placing test tubes (10), when the linear mechanism (8) drives the test tube rack (6) to move to one end of the linear mechanism (8) close to the support platform (2), and the transfer plate (4) drives the plurality of rows of test tube plugs (3) to rotate toward the test tube rack (6) to a horizontal state, the plurality of rows of test tube plugs (3) are respectively inserted into the plurality of test tubes (10) placed on the plurality of fixed parts, and the test tube plugs (3) are pushed upward by the test tubes (10) to separate from the inner side of the vertical plate (402); The pressing mechanism (9) is arranged above one end of the linear mechanism (8) away from the support platform (2) and is used to press the test tube plug (3) into the test tube (10).

2. A test tube plug insertion device according to claim 1, characterized in that: Two pairs of vertical telescopic rods (201) are provided on the support platform (2); the tops of the telescopic rods (201) are connected to the bottom of a support plate (202); the bottom of the support plate (202) is connected to the telescopic end of a lifting mechanism (203); the lifting mechanism (203) is fixed to the support platform (2); and the drying tray (1) is arranged above the support platform (2).

3. A test tube plug insertion device according to claim 2, characterized in that: Two pairs of vertically arranged angle steels (204) are symmetrically arranged on the support platform (2), and the support plate (202) and the drying tray (1) are both slidably arranged between the two pairs of angle steels (204).

4. A test tube plug insertion device according to claim 1, characterized in that: The drying tray (1) is provided with a first filter hole (102), and the bottom of the side surface of the accommodating ring (101) is provided with a second filter hole (1011).

5. A test tube plug insertion device according to claim 1, characterized in that: The test tube rack (6) comprises a fixed frame (601), wherein a plurality of fixed plates (602) are arranged in an array along a vertical direction in the fixed frame (601), through holes (6021) matching the outer diameter of the test tube (10) are arranged in a rectangular array on the fixed plates (602), a plurality of circular grooves (6011) are arranged in a rectangular array at the bottom of the fixed frame (601), the plurality of circular grooves (6011) and the plurality of through holes (6021) are axially aligned in the same direction, and rubber gaskets (603) are arranged in the circular grooves (6011).

6. A test tube plug insertion device according to claim 5, characterized in that: A snap-fitting groove (6012) is provided at the bottom of the fixed frame (601), and a protrusion (801) matching the snap-fitting groove (6012) is provided at the top of the movable end of the linear mechanism (8).

7. A test tube plug insertion device according to claim 1, characterized in that: The linear mechanism (8) is arranged in a U-shaped bottom plate (806), and strip baffles (807) are arranged on both sides of the U-shaped bottom plate (806). The length direction of the baffles is parallel to the length direction of the drying tray (1), the height of the strip baffles (807) is higher than the height of the U-shaped bottom plate (806), and the distance between the two sides of the U-shaped bottom plate (806) matches the width of the test tube rack (6).

8. A test tube plug insertion device according to claim 7, characterized in that: The linear mechanism (8) comprises a pair of slide plates (802), a first rack (803), and a drive motor (804); the first rack (803) is slidably connected between the pair of slide plates (802) along the length direction of the slide plates (802); the pair of slide plates (802) are fixed in a U-shaped bottom plate (806); the slide plates (802) are arranged parallel to the baffle plate; the bottom of the first rack (803) is meshedly connected to a gear (805); and the output shaft of the drive motor (804) passes through a slide plate (802) and is connected to the gear (805).

9. A test tube plug insertion device according to claim 1, characterized in that: The downward pressing mechanism (9) comprises a fixing frame (901), a pressing plate (902), a first cylinder (903), and a limit plate (904). The fixing frame (901) is arranged across two sides of the linear mechanism (8). The telescopic end of the first cylinder (903) passes downward through the top of the fixing frame (901) and is connected to the pressing plate (902). The bottom of the pressing plate (902) is connected to a plurality of vertically arranged springs (906) in a rectangular array. The bottoms of the springs (906) are all connected to push columns (90 5), a plurality of limiting holes matching the diameter of the push column (905) are provided in a rectangular array on the limiting plate (904), the push column (905) is slidably arranged in the limiting holes, and two sides of the limiting plate (904) are connected to two sides of the fixing frame (901), and when the linear mechanism (8) drives the test tube rack (6) to move to the end of the linear mechanism (8) away from the support platform (2), the axial directions of the plurality of test tubes (10) placed on the test tube rack (6) and the plurality of push columns (905) are the same.

10. A test tube plug insertion device according to claim 1, characterized in that: The rotating mechanism (7) comprises a second rack (701), a gear ring (702), and a second cylinder (703); the rotating shaft (5) is rotatably connected between a pair of support rods (704); the gear ring (702) is sleeved on one end of the rotating shaft (5); the second rack (701) is meshedly connected with the gear ring (702); and the telescopic end of the second cylinder (703) is connected to one end of the second rack (701).

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