Positioning device and detection equipment

Abstract

The utility model belongs to the technical field of medical instruments, and discloses a positioning device and detection equipment. The positioning device comprises a rack, a placing mechanism, a conveying mechanism and an identifying mechanism. The placing mechanism comprises a base in sliding connection with the rack, a first mounting seat and a second mounting seat, test tubes of different specifications are placed on the first mounting seat and the second mounting seat respectively, the first mounting seat is connected to the base through an adjusting assembly, and the second mounting seat is fixed to the base; the height of the adjusting assembly can be adjusted, so that the test tube positioned on the first mounting seat and the test tube positioned on the second mounting seat are arranged at the same height; the conveying mechanism is arranged on the rack; the base is in transmission connection with the conveying mechanism; the recognition mechanism is arranged on the rack and used for detecting whether test tubes exist on the placing mechanism or not. According to the utility model, the test tubes can be identified, so that the subsequent sampling continuity is improved; aiming at test tubes with different specifications, the sampling needle can be kept at the same position for sampling, so that the complexity of a transmission mechanism is reduced, and the positioning accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a positioning device and a detection device. Background Art

[0002] After blood samples are collected, they are usually stored in test tubes. During the testing process of the blood samples, the sampling needle is used to penetrate into the test tube to absorb the blood, and the blood samples are physically separated or chemically tested at the corresponding testing position.

[0003] Currently, blood samples from different parts of the body are usually temporarily stored in test tubes of different specifications.

[0004] Since the sizes of test tubes of different specifications are not the same, the sampling positions of the sampling needles are not consistent when the same testing equipment is used to test different types of test tubes. This results in the need to adjust the position of the sampling needle to adapt to test tubes of different specifications, which in turn causes the overall structure to be complex and requires precise positioning. In addition, the existing positioning device for the sample also affects the continuity of subsequent sampling actions due to the lack of recognition of the test tube. Utility Model Content

[0005] The purpose of the utility model is to provide a positioning device and detection equipment, which can identify test tubes and improve the continuity of subsequent sampling; for test tube types of different specifications, the sampling needle can be kept in the same position for sampling, so as to reduce the complexity of the transmission mechanism and improve the accuracy of positioning.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A positioning device for positioning a sampling tube, comprising:

[0008] frame;

[0009] A placing mechanism, the placing mechanism comprising a base, a first mounting seat and a second mounting seat slidably connected to the frame, the test tubes of different specifications are placed on the first mounting seat and the second mounting seat respectively, the first mounting seat is connected to the base through an adjusting component, the second mounting seat is fixed to the base, and the adjusting component can adjust the height so that the test tube located on the first mounting seat and the test tube located on the second mounting seat are placed at the same height;

[0010] A conveying mechanism is arranged on the frame, and the base is drivingly connected to the conveying mechanism;

[0011] An identification mechanism is arranged on the frame, and is used to detect whether the test tube is on the placement mechanism.

[0012] As an optional solution for the positioning device, the first mounting seat and the second mounting seat are respectively provided with seat holes for placing the test tube, and the positioning device also includes a straightening mechanism, which includes a clamping claw assembly, and the clamping claw assembly is used to clamp the outer wall of the test tube to straighten the test tube in the vertical direction.

[0013] As an optional scheme of the positioning device, the clamping jaw assembly includes two first clamping jaws arranged opposite to each other, and the straightening mechanism also includes a bracket, a first driving member, a driven wheel and a first transmission belt arranged on the bracket, the output end of the first driving member is connected to the driven wheel through the first transmission belt, and the two first clamping jaws are respectively fixed on the first transmission belt on both sides of the driven wheel.

[0014] As an optional solution of the positioning device, the clamping jaw assembly further includes a connecting plate and a pressing plate, the first clamping jaw is fixed to one end of the connecting plate, and the other end of the connecting plate is connected to the pressing plate to clamp the first transmission belt.

[0015] As an optional solution for the positioning device, a V-shaped groove is provided on the first clamping jaw, and the inner wall of the V-shaped groove is used to abut against the outer wall of the test tube.

[0016] As an optional scheme for the positioning device, an inner cavity is opened on the base, and the adjustment assembly includes a connecting piece, an elastic piece and a locking piece, one end of the connecting piece is connected to the bottom of the first mounting seat, the connecting piece is provided with a protrusion along the circumferential direction, the protrusion can slide in the vertical direction along the inner wall of the inner cavity, the protrusion is provided with a limiting portion along the vertical direction, the elastic piece is sleeved on the limiting portion, one end of the elastic piece abuts against the protrusion, and the other end of the elastic piece abuts against the locking piece, the locking piece is inserted into the inner cavity and closes the opening of the inner cavity away from the connecting piece.

[0017] As an optional solution of the positioning device, the identification mechanism includes two fixed plates arranged opposite to each other, one of the two fixed plates is provided with a transmitting optical coupler, and the other is provided with a receiving optical coupler.

[0018] As an optional scheme of the positioning device, the conveying mechanism includes a guide rail extending along the length direction of the frame, a second driving member arranged on the frame, and a second conveyor belt drivingly connected to the second driving member, the base is fixed to the second conveyor belt and the base is slidably connected to the guide rail.

[0019] As an optional scheme for the positioning device, the conveying mechanism also includes a slide plate, the base is fixed on the slide plate, the slide plate is slidably connected to the guide rail, a baffle is provided on the slide plate, and a detection optical coupler is provided on the side wall of the frame. When the test tube moves to a preset position, the baffle is used to block the detection optical coupler.

[0020] The detection equipment includes a sampling needle and a driving mechanism, and also includes the positioning device described in any of the above schemes. The sampling needle is connected to the frame through the driving mechanism. When the test tube reaches a preset position, the driving mechanism drives the sampling needle to enter the test tube for sampling.

[0021] Beneficial effects:

[0022] In the first aspect of the utility model, the frame provides positioning and support for other structures of the device. The first mounting seat and the second mounting seat are respectively used to place test tubes of different specifications. By adjusting the height through the adjustment component, it can ensure that the heights of the test tubes of the first mounting seat and the second mounting seat are the same, thereby further ensuring that the sampling needle can be kept in the same position for sampling, so as to reduce the complexity of the transmission mechanism and improve the accuracy of positioning. The device drives the base to move along the length direction of the frame through the conveying mechanism, thereby driving the test tubes of the first mounting seat and the second mounting seat to move toward the sampling position, thereby improving the accuracy and automation of position movement; when the conveying mechanism drives the base to move along the length direction of the frame toward the sampling position, an identification mechanism is set on the frame to identify whether a test tube is placed on the placement mechanism, which can facilitate the control of subsequent sampling needles, and the identification mechanism detects the presence or absence of test tubes to improve the continuity of subsequent sampling;

[0023] In the second aspect of the present invention, the detection equipment equipped with the device can improve the sampling adaptability to test tubes of different specifications, and can also improve the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front view of the positioning device provided by the embodiment of the utility model when the test tube has not reached the preset position;

[0025] Figure 2 This is a front view of the positioning device provided by the embodiment of the utility model when the test tube has reached a preset position;

[0026] Figure 3 It is a side view of the placement mechanism provided by the embodiment of the utility model;

[0027] Figure 4 yes Figure 3 Section view at section AA;

[0028] Figure 5It is an exploded view of the placement mechanism provided by the embodiment of the utility model;

[0029] Figure 6 is an exploded view of a positioning device provided by an embodiment of the utility model;

[0030] Figure 7 It is an exploded view of the straightening mechanism provided by the embodiment of the utility model;

[0031] Figure 8 It is a first structural schematic diagram of a first clamping jaw provided in an embodiment of the utility model;

[0032] Fig. 9 It is a second structural schematic diagram of the first clamping jaw provided in an embodiment of the utility model;

[0033] Fig.10 It is an exploded view of the conveying mechanism and the identification mechanism provided in the embodiment of the utility model.

[0034] In the figure:

[0035] 100. Test tube;

[0036] 1. Frame;

[0037] 2. Placement mechanism; 21. Base; 211. Inner cavity; 22. First mounting seat; 221. Seat hole; 23. Second mounting seat; 24. Adjustment assembly; 241. Connecting member; 2411. Protrusion; 2412. Positioning member; 242. Elastic member; 243. Locking member; 25. Third mounting seat;

[0038] 3. Conveying mechanism; 31. Guide rail; 32. Second driving member; 33. Second conveyor belt; 34. Slide plate; 341. Baffle plate; 35. First driven wheel;

[0039] 4. Identification mechanism; 41. Fixing plate; 411. Transmitting optical coupler; 412. Receiving optical coupler;

[0040] 5. Straightening mechanism; 51. First clamping jaw; 511. V-shaped groove; 52. Bracket; 53. First driving member; 531. Driving wheel; 54. Driven wheel; 55. First transmission belt; 56. Connecting plate; 57. Pressing plate; 58. Tensioning wheel;

[0041] 6. Detect the optocoupler. DETAILED DESCRIPTION

[0042] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0043] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0046] Please see attached Figure 1 -Attached Figure 5The first aspect of this embodiment relates to a positioning device (hereinafter referred to as "device"), which is used for front positioning of a test tube 100. Front positioning means that after the test tube 100 is filled with a blood sample, it needs to be moved to a designated position of a detection device, and the blood sample inside the test tube 100 is sampled by a sampling needle. The accuracy of the front positioning can ensure the smooth completion of sampling by the sampling needle. Specifically, the device includes a frame 1, a placement mechanism 2, a conveying mechanism 3 and an identification mechanism 4. The placement mechanism 2 includes a base 21, a first mounting seat 22 and a second mounting seat 23 which are slidably connected to the frame 1. Test tubes 100 of different specifications are placed on the first mounting seat 22 and the second mounting seat 23 respectively. The first mounting seat 22 is connected to the base 21 through an adjustment component 24, and the second mounting seat 23 is fixed on the base 21. The adjustment component 24 can adjust the height so that the test tube 100 located on the first mounting seat 22 and the test tube 100 located on the second mounting seat 23 are placed at the same height; the conveying mechanism 3 is arranged on the frame 1, and the base 21 is transmission-connected to the conveying mechanism 3; the identification mechanism 4 is arranged on the frame 1, and the identification mechanism 4 is used to detect whether there is a test tube 100 on the placement mechanism 2.

[0047] In this embodiment, the frame 1 is a long strip plate, and other structures of the device are directly or indirectly arranged on the frame 1. The frame 1 provides positioning and support for other structures of the device. The frame 1 extends along the length direction as a whole and is arranged parallel to the horizontal plane. The base 21 can slide along the length direction. The first mounting seat 22 and the second mounting seat 23 are respectively used to place test tubes 100 of different specifications. For example, test tubes 100 of different specifications can be used to temporarily store blood samples from different parts, such as peripheral blood and venous blood. By placing the test tube 100 for temporarily storing peripheral blood on the first mounting seat 22, and placing the test tube 100 for temporarily storing venous blood in the second mounting seat 23, the first mounting seat 22 is connected to the base 21 through the adjustment component 24, and the second mounting seat 23 is directly fixed on the base 21. By adjusting the height by the adjustment component 24, it can be ensured that the heights of the test tubes 100 of the first mounting seat 22 and the second mounting seat 23 are the same, thereby further ensuring that the sampling needle can be kept in the same position for sampling, so as to reduce the complexity of the transmission mechanism and improve the accuracy of positioning.

[0048] Of course, the adjustment component 24 can be adjusted actively or passively, depending on the structure of the adjustment component 24 .

[0049] The device drives the base 21 to move along the length direction of the frame 1 through the conveying mechanism 3, thereby driving the test tube 100 of the first mounting seat 22 and the second mounting seat 23 to move toward the sampling position, thereby improving the accuracy and automation of the position movement; when the conveying mechanism 3 drives the base 21 to move along the length direction of the frame 1 toward the sampling position, by setting an identification mechanism 4 at the upstream part of the frame 1 to identify whether the test tube 100 is placed on the placement mechanism 2, it is convenient to control the subsequent sampling needle. When the identification mechanism 4 does not detect the test tube 100, the control end of the sampling needle can terminate the subsequent moving sampling action after obtaining the signal, and can even directly control the conveying mechanism 3 to stop or even reverse and withdraw, waiting for further inspection by the operator; when the identification mechanism 4 detects the test tube 100, the control end controls the sampling needle to accurately reach the sampling position to perform the sampling action, and the identification mechanism 4 detects the presence or absence of the test tube 100 to improve the continuity of subsequent sampling.

[0050] Optionally, the first mounting seat 22 and the second mounting seat 23 are respectively provided with a seat hole 221 for placing the test tube 100, and the positioning device also includes a straightening mechanism 5, the straightening mechanism 5 includes a clamping claw assembly, and the clamping claw assembly is used to clamp the outer wall of the test tube 100 to straighten the test tube 100 in the vertical direction.

[0051] In this embodiment, the second mounting seat 23 and the base 21 are an integrated structure, and the first mounting seat 22 and the base 21 are a separate structure. The first mounting seat 22 and the second mounting seat 23 are rectangular, and the first mounting seat 22 and the second mounting seat 23 are provided with a seat hole 221 along the vertical direction. Test tubes 100 of different specifications are placed on the first mounting seat 22 and the second mounting seat 23 respectively. For example, the test tube 100 for temporarily storing peripheral blood is placed on the first mounting seat 22, and the test tube 100 for temporarily storing venous blood is placed on the second mounting seat 23. The diameter of the seat hole 221 is slightly larger than the diameter of the test tube 100 to facilitate the placement of the test tube 100 in the seat hole 221. At the same time, due to the difference in diameter, the test tube 100 is not completely vertically arranged inside the seat hole 221. Therefore, when the conveying mechanism 3 conveys the test tube 100 to the sampling position again, the opening bias position of the test tube 100 is random. The clamping jaw assembly of the straightening mechanism 5 clamps and straightens the test tube 100 before sampling, so that the test tube 100 is just vertically arranged, which can ensure that the sampling needle accurately samples at the preset sampling position.

[0052] Please see attached Figure 6 and attached Figure 7Furthermore, the clamping jaws assembly includes two first clamping jaws 51 arranged opposite to each other, and the straightening mechanism 5 also includes a bracket 52, a first driving member 53, a driven wheel 54 and a first transmission belt 55 arranged on the bracket 52, the output end of the first driving member 53 is connected to the driven wheel 54 through the first transmission belt 55, and the two first clamping jaws 51 are respectively fixed on the first transmission belt 55 and are located on both sides of the driven wheel 54.

[0053] In this embodiment, the test tube 100 is vertically erected by clamping the inner wall of the test tube 100 close to each other with two first clamping jaws 51. Specifically, the bracket 52 is a plate-shaped member, and the first driving member 53 and the driven wheel 54 are fixed by the mounting plate on the top of the bracket 52. The output end of the first driving member 53 passes through the mounting plate upward, and the output end of the first driving member 53 is a driving wheel 531. The driving wheel 531 drives the first transmission belt 55. At the same time, two driven wheels 54 are also arranged on the mounting plate. In order to ensure the reliability of the transmission of the first transmission belt 55, a tensioning wheel 58 is also arranged on the mounting plate. The tensioning wheel 58 squeezes the first transmission belt 55. The inner side of the first transmission belt 55 is respectively attached to the driving wheel 531 and the two driven wheels 54 arranged at intervals, and the tensioning wheel 58 is pressed against the outer side of the first transmission belt 55. The two first clamping jaws 51 are respectively fixed on the first transmission belt 55. The movement directions of the first transmission belts 55 on both sides of the driven wheel 54 are always opposite. Therefore, the same first driving member 53 can be used to drive the first clamping jaws 51 to move relatively closer and farther away, thereby realizing the clamping and releasing actions of the two first clamping jaws 51, thereby simplifying the driving structure.

[0054] Optionally, the first driving member 53 may be a rotary servo motor or other electric cylinder capable of controlling the steering.

[0055] Furthermore, the clamping jaw assembly further includes a connecting plate 56 and a pressing plate 57 . The first clamping jaw 51 is fixed to one end of the connecting plate 56 , and the other end of the connecting plate 56 is connected to the pressing plate 57 to clamp the first transmission belt 55 .

[0056] The connecting plate 56 is L-shaped, and the two connecting plates 56 are arranged oppositely and at intervals by adapting to the two first clamping jaws 51. The first clamping jaw 51 is screwed to one end of the connecting plate 56, and the connecting plate 56 is screwed to the pressure plate 57. At the same time, the first transmission belt 55 is clamped between the connecting plate 56 and the pressure plate 57 to ensure that the connection between the two is stable and without movement.

[0057] Please see attached Figure 8 and attached Fig. 9 Optionally, a V-shaped groove 511 is provided on the first clamping jaw 51 , and the inner wall of the V-shaped groove 511 is used to abut against the outer wall of the test tube 100 .

[0058] In this embodiment, the V-shaped groove 511 of the first clamping jaw 51 can ensure smooth clamping and reliable V-shaped positioning of the test tube 100, and the overall structure is simple. The inner wall of the V-shaped groove 511 of the first clamping jaw 51 can be padded with a soft rubber pad such as a rubber pad to ensure that when clamping the test tube 100, the rigid contact of the test tube 100 is avoided, thereby reducing the risk of the test tube 100 being broken.

[0059] Please see attached Figure 3 -Attached Figure 5 Optionally, an inner cavity 211 is opened on the base 21, and the adjustment component 24 includes a connecting piece 241, an elastic piece 242 and a locking piece 243. One end of the connecting piece 241 is connected to the bottom of the first mounting seat 22, and the connecting piece 241 is provided with a protrusion 2411 along the circumferential direction. The protrusion 2411 can slide in the vertical direction along the inner wall of the inner cavity 211. The protrusion 2411 is provided with a limiting portion 2412 in the vertical direction. The elastic piece 242 is sleeved on the limiting portion 2412, one end of the elastic piece 242 abuts against the protrusion 2411, and the other end of the elastic piece 242 abuts against the locking piece 243. The locking piece 243 is inserted into the inner cavity 211 and closes the opening of the inner cavity 211 away from the connecting piece 241.

[0060] In this embodiment, a cylindrical inner cavity 211 is opened inside the base 21, and a protrusion 2411 that slides with the inner cavity 211 is provided on the connecting piece 241. The other end of the connecting piece 241 extends out of the inner cavity 211 and is plugged or screwed with the bottom of the first mounting seat 22. A limiting portion 2412 is also protruded from the side of the protrusion 2411 away from the first mounting seat 22. The limiting portion 2412 is in the shape of a cylindrical rod, and the elastic member 242 is an ordinary standard spring that is sleeved on the limiting portion 2412. A locking member 243 is screwed at the opening on the other side of the base 21. The locking member 243 is provided with a limiting groove for accommodating the elastic member 242, and the other end of the elastic member 242 abuts against the side wall of the protrusion 2411.

[0061] When the test tube 100 is placed inside the first mounting seat 22, the gravity of the first mounting seat 22 increases, and the connecting piece 241 moves downward for a certain distance. At the same time, the elastic piece 242 is compressed for a certain distance, and the overall height of the first mounting seat 22 decreases. By adjusting the specifications of the elastic piece 242, it can be ensured that after the first mounting seat 22 temporarily stores the test tube 100, the height is exactly the same as the height of the second mounting seat 23 temporarily storing the test tube 100. In addition, the flexible effect produced by the elastic piece 242 can avoid rigid contact with the sampling needle, thereby preventing the sampling needle from being deformed by collision and affecting the sampling accuracy.

[0062] Optionally, a third mounting seat 25 is further provided on the base 21, and the third mounting seat 25 is provided between the first mounting seat 22 and the second mounting seat 23. The third mounting seat 25 is a clamping block structure for clamping a horizontally placed micro blood test tube, thereby expanding the application scope of the device.

[0063] Please see attached Figure 1 -Attached Figure 5 And attached Fig.10 Optionally, the identification mechanism 4 includes two fixed plates 41 arranged opposite to each other, one of the two fixed plates 41 is provided with a transmitting optical coupler 411 , and the other is provided with a receiving optical coupler 412 .

[0064] In this embodiment, the two fixing plates 41 are respectively fixed on the two side walls of the frame 1 along the width direction along the vertical direction. The fixing plates 41 and the frame 1 can be screwed together. The two fixing plates 41 can adopt a split structure, and of course, they can also be connected by an intermediate plate to form an integrated plate to form a U-shaped structure. The two fixing plates 41 are arranged opposite to each other. On the two fixing plates 41, one of them is provided with a transmitting optical coupler 411, and the other is provided with a receiving optical coupler 412. When the placement mechanism 2 passes between the transmitting optical coupler 411 and the receiving optical coupler 412, part of the structure of the test tube 100 will block the normal transmission of optical signals by the transmitting optical coupler 411 and the receiving optical coupler 412, so that it can be identified that the test tube 100 is placed inside the placement mechanism 2. When the test tube 100 is not placed inside the placement mechanism 2, the entire placement mechanism 2 will not block the normal transmission of optical signals by the transmitting optical coupler 411 and the receiving optical coupler 412 when passing between the transmitting optical coupler 411 and the receiving optical coupler 412.

[0065] Please see attached Figure 6 and attached Fig.10 Optionally, the conveying mechanism 3 includes a guide rail 31 extending along the length direction of the frame 1, a second driving member 32 arranged on the frame 1, and a second conveyor belt 33 drivingly connected to the second driving member 32, the base 21 is fixed to the second conveyor belt 33 and the base 21 is slidably connected to the guide rail 31.

[0066] In this embodiment, a guide rail 31 is further provided in the length direction of the frame 1, and a slide groove matching the guide rail 31 is opened on the lower bottom surface of the base 21. In addition, a second driving member 32 is provided on the outer wall at one end of the frame 1. The second driving member 32 can also be a rotary servo motor. A first driven wheel 35 is provided on the outer wall at the other end of the frame 1. The second driving member 32 and the first driven wheel 35 are transmitted through a second conveyor belt 33. The second conveyor belt 33 can be a gear belt to improve the movement accuracy of the entire base 21.

[0067] Optionally, the conveying mechanism 3 also includes a slide plate 34, the base 21 is fixed on the slide plate 34, the slide plate 34 is slidably connected to the guide rail 31, a baffle 341 is provided on the slide plate 34, and a detection optical coupler 6 is provided on the side wall of the frame 1. When the test tube 100 moves to a preset position, the baffle 341 is used to block the detection optical coupler 6.

[0068] In this embodiment, the base 21 can be directly fixed on the slide plate 34, and the slide plate 34 extends in the horizontal direction. A baffle 341 is provided on one side of the slide plate 34. When the second driving member 32 drives the base 21 and the slide plate 34 to slide along the guide rail 31, after the test tube 100 reaches the preset position, the baffle 341 just blocks the detection optical coupler 6, that is, once the detection optical coupler 6 recognizes the blocking signal, it indicates that the test tube 100 has moved to the position to be sampled. Through the cooperation of the baffle 341 and the detection optical coupler 6, it can prompt the detection equipment or the operator that the test tube 100 has accurately reached the position to be sampled.

[0069] The second aspect of this embodiment also relates to a detection device, which includes a sampling needle and a driving mechanism. The sampling needle is connected to the frame 1 through the driving mechanism. When the test tube 100 reaches a preset position, the driving mechanism drives the sampling needle to enter the test tube 100 for sampling.

[0070] Specifically, the driving mechanism can drive the sampling needle to a preset position, and the sampling needle can sample the test tube 100 that has reached the preset position. The driving mechanism can be implemented using a variety of existing conventional mechanisms. Exemplarily, the driving mechanism uses a driving motor and a three-link motion mechanism.

[0071] The detection equipment equipped with the device can improve the sampling adaptability to test tubes 100 of different specifications, and can also improve the detection efficiency.

[0072] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A positioning device for positioning a sampling tube (100), characterized in that: include: Rack (1); A placing mechanism (2), the placing mechanism (2) comprising a base (21), a first mounting seat (22) and a second mounting seat (23) slidably connected to the frame (1), the test tubes (100) of different specifications being placed on the first mounting seat (22) and the second mounting seat (23) respectively, the first mounting seat (22) being connected to the base (21) via an adjusting component (24), the second mounting seat (23) being fixed to the base (21), the adjusting component (24) being capable of adjusting the height so that the test tube (100) located on the first mounting seat (22) and the test tube (100) located on the second mounting seat (23) are placed at the same height; A conveying mechanism (3) is arranged on the frame (1), and the base (21) is drivingly connected to the conveying mechanism (3); An identification mechanism (4) is arranged on the frame (1), and the identification mechanism (4) is used to detect whether the test tube (100) is on the placement mechanism (2).

2. The positioning device according to claim 1, characterized in that: The first mounting seat (22) and the second mounting seat (23) are respectively provided with a seat hole (221) for placing the test tube (100), and the positioning device further comprises a straightening mechanism (5), wherein the straightening mechanism (5) comprises a clamping jaw assembly, and the clamping jaw assembly is used to clamp the outer wall of the test tube (100) so as to straighten the test tube (100) in the vertical direction.

3. The positioning device according to claim 2, characterized in that: The clamping jaw assembly comprises two first clamping jaws (51) arranged opposite to each other, the straightening mechanism (5) further comprises a bracket (52), a first driving member (53) arranged on the bracket (52), a driven wheel (54) and a first transmission belt (55), the output end of the first driving member (53) is connected to the driven wheel (54) through the first transmission belt (55), and the two first clamping jaws (51) are respectively fixed to the first transmission belt (55) on both sides of the driven wheel (54).

4. The positioning device according to claim 3, characterized in that: The clamping jaw assembly further comprises a connecting plate (56) and a pressing plate (57); the first clamping jaw (51) is fixed to one end of the connecting plate (56); and the other end of the connecting plate (56) is connected to the pressing plate (57) to clamp the first transmission belt (55).

5. The positioning device according to claim 3, characterized in that: The first clamping jaw (51) is provided with a V-shaped groove (511), and the inner wall of the V-shaped groove (511) is used to abut against the outer wall of the test tube (100).

6. The positioning device according to claim 1, characterized in that: The base (21) is provided with an inner cavity (211), the adjustment assembly (24) comprises a connecting piece (241), an elastic piece (242) and a locking piece (243), one end of the connecting piece (241) is connected to the bottom of the first mounting seat (22), the connecting piece (241) is provided with a protrusion (2411) along the circumferential direction, the protrusion (2411) can slide in the vertical direction along the inner wall of the inner cavity (211), and the protrusion (2411) can slide in the vertical direction along the inner wall of the inner cavity (211). A limiting portion (2412) is protruded along the vertical direction of the connecting member (2411), the elastic member (242) is sleeved on the limiting portion (2412), one end of the elastic member (242) abuts against the protruding portion (2411), and the other end of the elastic member (242) abuts against the locking member (243), and the locking member (243) is inserted into the inner cavity (211) and closes the opening of the inner cavity (211) away from the connecting member (241).

7. The positioning device according to claim 1, characterized in that: The identification mechanism (4) comprises two fixed plates (41) arranged opposite to each other, one of the two fixed plates (41) being provided with a transmitting optical coupler (411), and the other being provided with a receiving optical coupler (412).

8. The positioning device according to claim 1, characterized in that: The conveying mechanism (3) comprises a guide rail (31) extending along the length direction of the frame (1), a second driving member (32) arranged on the frame (1), and a second conveyor belt (33) drivingly connected to the second driving member (32); the base (21) is fixed on the second conveyor belt (33) and the base (21) is slidably connected to the guide rail (31).

9. The positioning device according to claim 8, characterized in that: The conveying mechanism (3) further comprises a slide plate (34), the base (21) is fixed on the slide plate (34), the slide plate (34) is slidably connected to the guide rail (31), a baffle (341) is provided on the slide plate (34), a detection optical coupler (6) is provided on the side wall of the frame (1), and when the test tube (100) moves to a preset position, the baffle (341) is used to shield the detection optical coupler (6).

10. A detection device comprising a sampling needle and a drive mechanism, characterized in that: It also includes a positioning device as described in any one of claims 1 to 9, wherein the sampling needle is connected to the frame (1) through a driving mechanism, and the sampling needle is used for driving the sampling needle to enter the test tube (100) for sampling when the test tube (100) reaches a preset position.

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