Automatic scanner for QR codes on top of cryopreservation tubes and scanning method

Abstract

The present invention provides an automatic scanner and scanning method for two-dimensional codes on the top of a cryogenic tube, which improves the scanning efficiency of the two-dimensional codes on the top of the cryogenic tube. The automatic scanner for two-dimensional codes on the top of the cryogenic tube includes a base part, a control mechanism, a scanning gun, and a scanning board; the scanning gun is controlled by the control mechanism to move in the X-axis, Y-axis and Z-axis directions; a scanning board is provided below the scanning gun, and a scanning hole is provided on the scanning board, and the scanning hole corresponds to a two-dimensional code size. In the preferred embodiment of the automatic scanner for two-dimensional codes on the top of the cryogenic tube, the control mechanism includes a mechanical transmission part and a mechanical arm sliding module; the mechanical transmission part can drive the mechanical arm sliding module to move along the X-axis direction; the mechanical arm sliding module includes a main sliding module, a movable arm and a fixed arm, the main sliding module drives the movable arm to move relative to the fixed arm along the Z-axis direction, and the movable arm is connected to the scanning gun; the scanning board is slidably connected to the bottom of the fixed arm, and a defrosting brush is provided below the scanning board.

Description

Technical Field

[0001] The invention relates to an automatic scanner for scanning a two-dimensional code on the top of a cryotube and a scanning method, belonging to the technical field of scanning codes on cryotubes. Background Art

[0002] With the rapid development of the global medical field, standardized and large-volume biological sample resources have become the key source of innovative development of medical technology. At present, various national, regional, hospital and department-level biological sample banks have been established at home and abroad, providing important resources for basic and clinical research on major diseases, drug development, clinical diagnosis and treatment technology development, and health (prediction and prevention) research and industrialization.

[0003] In order to realize the information management of biological samples, each sample cryopreservation tube needs to be coded. When the sample is stored, the code is scanned to enter the information into the library, and the code is also required to be scanned for verification when it is out of the library. At present, the sample coding of biological sample libraries mainly adopts the form of QR code, which has the advantages of small printing area, high recognition rate, and large amount of information. The coding methods include: manual coding, direct coding on the surface of the cryopreservation tube by a special cryopreservation tube coding machine, and prefabricated QR code on the bottom of the cryopreservation tube. Among them, the prefabricated QR code on the bottom of the cryotube refers to the QR code laser-etched directly on the bottom of the cryotube by the cryotube manufacturer during the production process. The advantage is that the user does not need to code and paste the code, and the bottom QR code can be scanned in batches, but the disadvantage is that such cryotubes must be equipped with automated equipment (batch scanner, automated liquid workstation, automated storage equipment, etc.), and require a complete information management system. What is more inconvenient is that the prefabricated QR code is generated according to the manufacturer's own coding rules, and it is necessary to add a binding process with the code generated by the user's unit coding rules during use, which is very cumbersome; the dedicated cryotube coding machine can directly code the surface of the cryotube, but the coding equipment is expensive, and it can only code on the side of the cryotube. When scanning the code, each cryotube can only be picked up and then scanned with a barcode scanner; manual coding and pasting refers to printing a paper QR code with an ordinary coding machine and then sticking it on the surface of the cryotube. This method has low hardware requirements and is printed completely according to the coding rules of the user unit. The label can be affixed to the side or top of the cryotube. In addition, the label can be reprinted and replaced when it is damaged. It is still the most common cryotube marking method in the biological sample library industry.

[0004] At present, the scanning operation of biological sample libraries is divided into two methods: manual scanning and automatic scanning. Among them, there are mainly two types of automatic scanning equipment: one is the batch scanning equipment for QR codes on the bottom of cryopreservation tubes, which can batch scan the QR codes on the bottom of cryopreservation tubes, take pictures of the entire bottom, and then perform image decomposition analysis, and finally identify the QR codes on the bottom of the entire box of cryopreservation tubes. The advantage is fast speed. The disadvantage is that cryopreservation tubes with prefabricated QR codes on the bottom must be used, and the common problem of the overall photography method is that the recognition rate of cryopreservation tubes located at the edge is low, and the phenomenon of unrecognition often occurs. At this time, these cryopreservation tubes need to be picked up and scanned manually, and this process takes a lot of time. In addition, cryopreservation tubes are usually in a low temperature or frozen state before entering and leaving the warehouse. Some models of equipment have a defrosting function, but they mainly use the freezing box card slot heating method. Although it can play a defrosting role, it is very unfavorable for the low temperature control of cryopreservation tubes. The second method is mainly one of the functions of the automated workstation, which simulates human hands and picks up the cryotubes one by one for scanning. The advantage is that it can scan the QR codes on the bottom, top, and side, but the disadvantage is that it is slow and not as fast as manual operation.

[0005] Manual code scanning requires that each cryotube be picked up from the cryotube box (or tube rack) one by one, scanned, and then inserted into the cryotube box, which is inefficient and will inevitably cause the cryotube to heat up significantly or even thaw unless the number of cryotubes is small. In addition, manual operation is prone to the problem of inserting the wrong position. Summary of the invention

[0006] The purpose of the present invention is to provide an automatic scanner and scanning method for two-dimensional codes on the top of a cryogenic tube, which can quickly scan the two-dimensional codes on the top of the cryogenic tubes one by one, thereby improving the scanning efficiency of the two-dimensional codes on the top of the cryogenic tubes.

[0007] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0008] An automatic scanner for a two-dimensional code on the top of a cryotube, comprising a control mechanism, a scanning gun, a code scanning plate and a base portion;

[0009] The base portion is used to place a cryopreservation box having cryopreservation tubes arranged in rows and columns;

[0010] The scanning gun can move in the X-axis, Y-axis and Z-axis directions through the control mechanism;

[0011] A scanning plate is provided under the scanner gun, and a scanning hole is provided on the scanning plate, and the scanning hole corresponds to the size of a QR code.

[0012] The preferred solution of the automatic scanning device for the QR code on the top of the cryotube, wherein the control mechanism includes a mechanical transmission part and a mechanical arm sliding module;

[0013] The mechanical transmission part can drive the robot arm sliding module to move along the X-axis direction;

[0014] The mechanical arm sliding module includes a main sliding module, a movable arm and a fixed arm. The main sliding module drives the movable arm to move along the Z-axis direction relative to the fixed arm, and the movable arm is connected to the scanning gun.

[0015] The code scanning plate is slidably connected to the bottom of the fixed arm, and a defrost brush is arranged under the code scanning plate.

[0016] The preferred solution for the automatic QR code scanner on the top of the freezing tube is that the base part includes a base body, four limiters, four limit slides and a synchronous transmission mechanism; the four limiters are distributed at the four corners of the base body, and the four limiters are driven by the synchronous transmission mechanism to move along the limit slides to achieve relative movement towards or away from the base body as the center.

[0017] The preferred solution of the automatic scanning device for the QR code on the top of the cryotube, wherein the synchronous transmission mechanism comprises a transmission bracket, a transmission unit I and a transmission unit II;

[0018] The transmission bracket is arranged on the lower surface of the base body, and includes four L-shaped plates, and the four L-shaped plates are arranged in a cross-shaped symmetrical manner;

[0019] The transmission unit I consists of four groups, including pulley I, pulley II and a transmission belt. Pulley I and pulley II are installed between two L-shaped plates through axles. The transmission belt connects pulley I and pulley II at the same time, and the limiter is connected to the transmission belt.

[0020] The transmission unit II consists of four groups, including bevel gears arranged on both sides of the pulley II, and the bevel gears on two adjacent pulley IIs are meshed with each other.

[0021] The preferred embodiment of the automatic QR code scanner on the top of the cryogenic tube also includes a push-lock key, which includes a push key, a sleeve, a locking body and a spring. The sleeve is arranged on the base, and the push key passes through the sleeve to be connected to the locking body. The locking body has a toothed structure that can contact the bevel gear, and the spring simultaneously connects the base and the locking body.

[0022] The preferred solution of the automatic QR code scanner on the top of the cryotube, the fixed arm includes a fixed arm vertical rod and a fixed arm bottom plate, the fixed arm bottom plate is arranged above the base part and below the main sliding module, the two ends of the fixed arm vertical rod are connected to the fixed arm bottom plate and the main sliding module, the fixed arm bottom plate is provided with a stepped notch groove along the y-axis direction, and the code scanning plate is correspondingly connected with the notch groove;

[0023] The movable arm comprises two movable arm vertical rods and a connecting cross rod. The connecting cross rod is connected to the two movable arm vertical rods at the same time, and the movable arm vertical rod is connected to the main sliding module and the code scanning plate at the same time.

[0024] The preferred embodiment of the automatic scanning of the two-dimensional code on the top of the freezing tube is that the surface of the limiter is provided with a scale.

[0025] A method for scanning using the automatic scanner for scanning the QR code on the top of the cryopreservation tube comprises the following steps:

[0026] 1) Place the cryobox to be scanned on the base and use a limiter to limit the position of the cryobox;

[0027] 3) If the cryobox is an SBS cryobox, use a scale to keep the cryobox in the center;

[0028] 4) The automatic scanner automatically starts the following actions:

[0029] a. The main sliding module automatically moves along the X-axis to the first row of the cryobox, where the defrost brush is located directly above the first row of the cryobox;

[0030] b. The fixed arm and the defrost brush move downward along the Z axis until the bottom plate of the fixed arm touches the surface of the cryopreservation tube, and then the fixed arm and the defrost brush move upward along the Z axis;

[0031] c. Move the code scanning plate horizontally along the Y-axis direction to the first hole in the first row of the cryopreservation box. At this time, the QR code on the top of the first cryopreservation tube is at the code scanning hole position;

[0032] d. The scanner is turned on and the QR code on the top of the first cryogenic tube is scanned through the code scanning hole. After scanning the first one, the code scanning plate moves along the Y axis by the distance of one hole position, and the code scanning hole moves to the position of the second cryogenic tube. The scanner is turned on to scan the QR code on the top of the second cryogenic tube.

[0033] e. Similarly, after scanning the first row, the main sliding module moves along the X-axis to position the barcode scanning plate at the second row of the cryopreservation box, and then starts scanning from the first cryopreservation tube in the second row, and so on, until the scanning of the entire box is completed;

[0034] 5) After the scan is completed, the robot arm sliding module returns to its initial state: the movable arm and the fixed arm rise to the highest position along the Z axis, the barcode scanning board moves horizontally to the middle position along the Y axis, and the main sliding module moves horizontally to the middle position along the X axis.

[0035] The advantages of the present invention are: it can adapt to and automatically identify various specifications and sizes of cryopreservation boxes on the market without replacing accessories; it can quickly and accurately scan the QR code on the top of the cryopreservation tube by scanning one by one, and the scanning efficiency is high; it has a mechanical defrosting function; the scanning can be set and started through the touch screen, the scanned data can be exported through a USB, and it can also be connected to a computer and scanned directly using software. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0037] Figure 1This is an overall schematic diagram of the automatic scanner for the QR code on the top of the cryotube.

[0038] Figure 2 Schematic diagram of the automatic QR code scanner on the top of the cryogenic tube after placing a 10×10 cryogenic box.

[0039] Figure 3 It is a top view schematic diagram of the base of the present invention.

[0040] Figure 4 It is a schematic top view of the interior of the base of the present invention after the cover is removed.

[0041] Figure 5 It is a schematic diagram of the connection between the pulley I and the transmission belt of the present invention.

[0042] Figure 6 It is an enlarged schematic diagram of the middle part of the synchronous transmission mechanism of the present invention.

[0043] Figure 7 It is a schematic diagram of the structure of the pressing lock key of the present invention.

[0044] Figure 8 Schematic diagram of the side view of the automatic scanner of the QR code on the top of the cryotube.

[0045] Fig. 9 This is a front view of the automatic scanner for the QR code on the top of the cryotube.

[0046] Fig.10 This is a schematic diagram of the back side of the automatic scanner for the QR code on the top of the cryotube.

[0047] Fig.11 It is a schematic side view of the robot arm sliding module.

[0048] Fig.12 This is a schematic diagram of the main view of the robot arm sliding module.

[0049] Fig.13 It is a schematic side view of the sliding module of the robotic arm when the movable arm is raised.

[0050] Fig.14 This is a schematic diagram of the main view of the mechanical arm sliding module when the movable arm is raised.

[0051] Fig.15 This is a schematic diagram of the three-dimensional structure of the robotic arm sliding module.

[0052] Fig.16 This is a schematic diagram of the structure of the robot arm sliding module from above.

[0053] 1. Mechanical transmission part, 2. Base part, 3. Electrical control part, 4. Mechanical arm sliding module, 11. Touch screen, 12. USB interface, 21. Limiting slide, 22. Limiter, 221. Scale ruler, 23. Press lock key, 231. Press key, 232. Sleeve, 233. Locking chain, 234. Spring, 24. Base body, 25. Groove, 26. Synchronous transmission mechanism, 261. Pulley I, 262. Transmission belt, 263. Pulley II, 2631. Bevel gear, 41. Main sliding module, 42. Fixed arm, 421. Fixed arm vertical rod, 422. Fixed arm bottom plate, 43. Movable arm, 431. Movable arm vertical rod, 432. Movable arm bottom plate, 433. Defrost brush, 434. Barcode scanning gun, 435 Barcode scanning hole, 31. Power cord socket, 32. Data cable socket, 33. Power switch, 34. Electrical cover. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0055] In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal" and the like indicate directions.

[0056] The position or position relationship is based on the position or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description.

[0057] The description does not indicate or imply that the device or element must have a specific orientation, be constructed or

[0058] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0059] refer to Figure 1 and Figure 2 , an automatic scanner for two-dimensional codes on the top of a cryopreservation tube, comprising a control mechanism, a scanning gun 434, a scanning board, a base part 2 and an electrical control part; the base part 2 is used to place a cryopreservation box with cryopreservation tubes arranged in rows and columns; the scanning gun 434 can be controlled by the control mechanism to move in the X-axis, Y-axis and Z-axis directions; Fig.15 and Fig.16 A code scanning plate 432 is provided below the scanning gun 434 , and a code scanning hole 435 is provided on the code scanning plate 432 , and the code scanning hole 435 corresponds to a two-dimensional code size.

[0060] refer to Figure 4 , Figure 8 and Fig. 9 The control mechanism includes a mechanical transmission part 1 and a mechanical arm sliding module 4; the mechanical transmission part 1 is provided with a touch screen 11 and a USB interface 12, which can drive the mechanical arm sliding module 4 to move along the X-axis direction; the mechanical arm sliding module 4 includes a main sliding module 41, a movable arm 43 and a fixed arm 42, the main sliding module 41 drives the movable arm 43 to move along the Z-axis direction relative to the fixed arm 42, and the movable arm 43 is connected to the scanning gun 434; the code scanning plate is slidably connected to the bottom of the fixed arm 42, and a defrost brush 433 is provided under the code scanning plate.

[0061] refer to Fig.11 and Fig.12 The fixed arm 42 includes a fixed arm vertical rod 421 and a fixed arm bottom plate 422. The fixed arm bottom plate 422 is arranged above the base part 2 and below the main sliding module 41. The two ends of the fixed arm vertical rod 421 connect the fixed arm bottom plate 422 and the main sliding module 41. The fixed arm bottom plate 422 is provided with a stepped notch groove along the y-axis direction, and the code scanning plate is correspondingly connected to the notch groove; the movable arm 43 includes two movable arm vertical rods 431 and a connecting cross bar. The connecting cross bar simultaneously connects the two movable arm vertical rods 431, and the movable arm vertical rod 431 simultaneously connects the main sliding module 41 and the code scanning plate. The fixed arm 42 and movable arm 43 can reciprocate along the Z-axis on the main sliding module 41 and can be controlled independently of each other. During the scanning process, the fixed arm bottom plate 422 and the code scanning plate 432 are always in the same plane. When not in the scanning state, the fixed arm bottom plate 422 and the code scanning plate 432 can be at different heights, such as Fig.13 , Fig.14 .like Fig.11 As shown, the electrical control part includes a power cord jack 31, a data line jack 32, a power switch 33, an electrical cover 34 and a circuit connection part (omitted in the figure and using conventional technology)

[0062] refer to Figure 3 and Figure 4 The base part 2 includes a base body 24, four limiters 22, four limit slide grooves 21, a synchronous transmission mechanism and a push lock key 23; the four limiters 22 are diagonally distributed on the surface of the base cover, and the four limiters 22 can move along the limit slide grooves 21 through the synchronous transmission mechanism to achieve relative movement to move closer or farther away from the base body. Figure 7 The press lock key 23 includes a press key 231, a sleeve 232, a locking body 233 and a spring 234. The sleeve 232 is set on the base. The press key 231 passes through the sleeve 232 and is connected to the locking body 233. The locking body has a toothed structure that can contact the bevel gear. The spring 234 connects the base and the locking body 233 at the same time.

[0063] refer to Figure 5 and Figure 6 The synchronous transmission mechanism 26 includes a transmission bracket, a transmission unit I and a transmission unit II; the transmission bracket is arranged on the lower surface of the base body, including four L-shaped plates, and the four L-shaped plates are arranged in a cross-shaped symmetrical manner; the transmission unit I is four groups, including pulley I 261, pulley II 263 and transmission belt 262, pulley I 261 and pulley II 263 are installed between two L-shaped plates through a wheel shaft, and the transmission belt 262 connects pulley I 261 and pulley II 263 at the same time; the transmission unit II is four groups, including bevel gears 2631 arranged on both sides of pulley II 263, and the bevel gears 2631 on two adjacent pulleys II 263 are meshed with each other. Thereby, the synchronous rotation of the four 263 is realized. In addition, a clockwork device is arranged on the shaft of pulley I 261, and the limiter 22 is fixed on the transmission belt 262. In the non-working state, the limiter 22 will automatically move to the position closest to the center 23 under the action of the clockwork device.

[0064] In order to be suitable for the SBS standard freezing box, a scale 221 is provided on the surface of the stopper 22 .

[0065] In this embodiment, the defrost brush 433 simultaneously removes the frost on the top of the cryopreservation tube during the scanning process. Brushes of different thicknesses or hardnesses can be selected according to the quality of the user's cryopreservation tube, cryopreservation box, and QR code label. When replacing, click on the touch screen to replace the defrost brush 433, and the movable arm 43 and the fixed arm 42 will automatically move to different heights. Figure 8 , Fig.11 At this time, remove the code scanning board 432 (together with the defrost brush), replace it with a code scanning board 432 of other specifications, and then click on the touch screen to complete the replacement, and the instrument will automatically reset.

[0066] A method for scanning using the automatic scanner for scanning the QR code on the top of the cryopreservation tube comprises the following steps:

[0067] 1) Connect the power cord and turn on the power switch 33 to start the machine. The size of the cryo box, the number of holes in the X-axis direction, and the number of holes in the Y-axis direction can be set on the touch screen and the cryo box settings can be saved;

[0068] 2) Place the cryobox to be scanned on the base part 2, limit the position of the cryobox with the stopper 22, and then press down the cryobox to press the locking button 23. The locking button 23 can lock the bevel gear 2631, so that the stopper 22 is fixed and cannot move.

[0069] 3) If the cryobox is an SBS cryobox, the scale ruler 221 can be used to position the cryobox in the center;

[0070] 4) Select the corresponding cryobox on the touch screen, click Start Scan, and the automatic scanner will automatically start the following actions:

[0071] a. The main sliding module 41 automatically moves along the X-axis to the first row of the freezing boxes, wherein the defrost brush 433 is located directly above the first row of the freezing boxes;

[0072] b. The fixed arm 42 and the defrost brush 433 move downward along the Z-axis until the fixed arm bottom plate 422 touches the surface of the cryopreservation tube, and then the fixed arm 42 and the defrost brush 433 retreat upward along the Z-axis;

[0073] c. The code scanning plate 432 moves horizontally along the Y-axis direction to the first hole position in the first row of the cryopreservation box. At this time, the QR code on the top of the first cryopreservation tube is at the code scanning hole position;

[0074] d. The scanner 434 is turned on and the QR code on the top of the first cryogenic tube is scanned through the code scanning hole 435. After scanning the first cryogenic tube, the code scanning plate 432 moves along the Y axis by a hole position, and the code scanning hole 435 moves to the position of the second cryogenic tube. The scanner 434 is turned on to scan the QR code on the top of the second cryogenic tube.

[0075] e. Similarly, after scanning the first row, the main sliding module 41 moves along the X-axis to position the code scanning plate 432 at the second row of the cryopreservation box, and then scans the first cryopreservation tube in the second row, and so on, until the scanning of the entire box is completed;

[0076] During the scanning process, the touch screen or computer software displays the simulated plane image of the cryopreservation box and the QR code string scanned by each well in real time. Blank wells and wells that failed to scan are also automatically recorded.

[0077] 5) After the scan is completed, click Finish Scan, the instrument can automatically save the data, and the robotic arm sliding module 4 will restore to its initial state: the movable arm 43 and the fixed arm 42 will rise to the highest position along the Z axis, the code scanning plate 432 will move horizontally to the middle position along the Y axis, and the main sliding module 41 will move horizontally to the middle position along the X axis.

[0078] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic scanner for QR codes on the top of cryotubes, characterized in that: It includes a control mechanism, a scanning gun (434), a code scanning plate and a base part (2); The base portion (2) is used to place a cryo box having cryo tubes arranged in rows and columns; The scanning gun (434) is controlled by a control mechanism to move in the X-axis, Y-axis and Z-axis directions; A code scanning plate (432) is provided below the scanning gun (434), and a code scanning hole (435) is provided on the code scanning plate. The code scanning hole (435) corresponds to a size of a two-dimensional code; The control mechanism comprises a mechanical transmission part (1) and a mechanical arm sliding module (4); The mechanical transmission part (1) can drive the mechanical arm sliding module (4) to move along the X-axis direction; The mechanical arm sliding module (4) comprises a main sliding module (41), a movable arm (43) and a fixed arm (42); the main sliding module (41) drives the movable arm (43) to move relative to the fixed arm (42) along the Z-axis direction; the movable arm (43) is connected to a scanning gun (434); The code scanning plate is slidably connected to the bottom of the fixed arm (42), and a defrosting brush (433) is provided below the code scanning plate; The base portion (2) comprises a base body, four limiters (22), four limit slide grooves (21) and a synchronous transmission mechanism; the four limiters (22) are distributed at four corners of the base body, and the four limiters (22) are driven by the synchronous transmission mechanism to move along the limit slide grooves (21) to achieve relative movement to move closer to or farther from the base body as the center; The synchronous transmission mechanism (26) comprises a transmission bracket, a transmission unit I and a transmission unit II; The transmission bracket is arranged on the lower surface of the base body, and includes four L-shaped plates, and the four L-shaped plates are arranged in a cross-shaped symmetrical manner; The transmission unit I is composed of four groups, including pulley I (261), pulley II (263) and a transmission belt (262). The pulley I (261) and the pulley II (263) are installed between two L-shaped plates through a wheel shaft. The transmission belt (262) connects the pulley I (261) and the pulley II (263) at the same time. The limiter (22) is fixed on the transmission belt (262). The transmission unit II is composed of four groups, including bevel gears (2631) arranged on both sides of the pulley II (263), and the bevel gears (2631) on two adjacent pulleys II (263) are meshed with each other; The fixed arm (42) comprises a fixed arm vertical rod (421) and a fixed arm bottom plate (422); the fixed arm bottom plate (422) is arranged above the base portion (2) and below the main sliding module (41); two ends of the fixed arm vertical rod (421) are connected to the fixed arm bottom plate (422) and the main sliding module (41); the fixed arm bottom plate (422) is provided with a stepped notch groove along the y-axis direction, and the code scanning plate is correspondingly connected to the notch groove; The movable arm (43) comprises two movable arm vertical rods (431) and a connecting cross rod, the connecting cross rod simultaneously connects the two movable arm vertical rods (431), and the movable arm vertical rod (431) simultaneously connects the main sliding module (41) and the code scanning plate.

2. The automatic scanner for scanning two-dimensional codes on the top of a cryotube according to claim 1, characterized in that: It also includes a push-lock key (23), which includes a push key (231), a sleeve (232), a locking body (233) and a spring (234), wherein the sleeve (232) is arranged on a base, the push key (231) passes through the sleeve (232) and is connected to the locking body (233), the locking body has a toothed structure capable of contacting a bevel gear, and the spring (234) simultaneously connects the base and the locking body (233).

3. The automatic scanner for scanning two-dimensional codes on the top of a cryotube according to claim 1 or 2, characterized in that: A scale (221) is provided on the surface of the stopper (22).

4. A method for scanning using the automatic scanner for scanning the two-dimensional code on the top of the cryotube according to claim 3, characterized in that: The following steps are involved: 1) placing the cryo box to be scanned on the base portion (2), and limiting the position of the cryo box with a stopper (22); 2) If the cryobox is an SBS cryobox, use the scale ruler (221) to make the cryobox be located in the center; 3) The automatic scanner automatically starts the following actions: a. The main sliding module (41) automatically moves along the X-axis to the first row of the cryoboxes, wherein the defrost brush (433) is located directly above the first row of the cryoboxes; b. The fixed arm (42) and the defrost brush (433) move downward along the Z-axis until the fixed arm bottom plate (422) touches the surface of the cryopreservation tube, and then the fixed arm (42) and the defrost brush (433) move upward along the Z-axis; c. The code scanning plate (432) moves horizontally along the Y-axis direction to the first hole position in the first row of the cryopreservation box, and the QR code on the top of the first cryopreservation tube is at the code scanning hole position; d. The scanning gun (434) is turned on, and the QR code on the top of the first cryopreservation tube is scanned through the code scanning hole (435). After scanning the first cryopreservation tube, the code scanning plate (432) moves along the Y axis by a hole position, and the code scanning hole (435) moves to the position of the second cryopreservation tube. The scanning gun (434) is turned on to scan the QR code on the top of the second cryopreservation tube; e. Similarly, after scanning the first row, the main sliding module (41) moves along the X-axis so that the code scanning plate (432) is located at the second row of the cryopreservation box, and then scanning starts from the first cryopreservation tube in the second row, and so on, until the scanning of the entire box is completed; 4) After the scanning is completed, the robot arm sliding module (4) returns to the initial state: the movable arm (43) and the fixed arm (42) are raised to the highest position along the Z axis, the code scanning plate (432) is translated to the middle position along the Y axis, and the main sliding module (41) is translated to the middle position along the X axis.

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