Mixing mechanism, automatic mixing device and sample analyzer

Abstract

The present application relates to the field of medical equipment technology, and specifically discloses a mixing mechanism, an automatic mixing device, and a sample analyzer. The mixing mechanism is used to drive a test tube to swing to mix the sample in the test tube. The mixing mechanism includes: a first fixed plate, a second fixed plate, a rotating block, and a clamping member; the rotating block is disposed on the second fixed plate, the clamping member is fixedly mounted on the rotating block, the clamping member is used to grasp or release the test tube, the second fixed plate is detachably connected to the first fixed plate, and the second fixed plate and the first fixed plate are movably matched to achieve fine-tuning of the clamping member's position. In this way, fine-tuning of the clamping member's position can be achieved to correct assembly and manufacturing errors, ensuring that the test tube can be accurately grasped or placed.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and in particular to a mixing mechanism, an automatic mixing device, and a sample analyzer. Background Art

[0002] In clinical testing instruments, such as blood cell analyzers, blood samples contained in test tubes in a test tube sample rack must be fully and properly mixed before testing and sampling. Therefore, each blood cell analyzer includes multiple modules.

[0003] During the long-term research and development process, the inventors of this application discovered that due to inevitable processing errors in the manufacturing process and assembly and manufacturing errors generated during the assembly process, the clamping parts may deviate from the test tube rack or relay assembly, resulting in the inability to accurately grasp the test tube or failure to place the test tube.

[0004] Therefore, it is necessary to propose a mixing mechanism, an automatic mixing device and a sample analyzer. Summary of the Invention

[0005] The present application aims to solve the problems existing in the above-mentioned prior art to a certain extent, and provides a mixing mechanism, an automatic mixing device and a sample analyzer to achieve fine adjustment of the position of the clamping member to correct assembly and manufacturing errors and ensure that the test tube can be accurately grasped or placed.

[0006] In order to solve the above technical problems, a technical solution adopted in this application is: to provide a mixing mechanism, which is used to drive the test tube to swing to mix the sample in the test tube, and the mixing mechanism includes: a first fixed plate, a second fixed plate, a rotating block, and a clamping member; the rotating block is arranged on the second fixed plate, and the clamping member is fixedly installed on the rotating block, and the clamping member is used to grab or release the test tube, the second fixed plate is detachably connected to the first fixed plate, and the second fixed plate and the first fixed plate are movably matched to achieve fine-tuning of the position of the clamping member.

[0007] Compared with the prior art, the mixing mechanism of this application has the following beneficial effects:

[0008] The mixing mechanism of the present application includes a first fixing plate and a second fixing plate, the second fixing plate and the first fixing plate are detachably connected at the lower end, and the second fixing plate and the first fixing plate are movably matched to achieve fine-tuning of the position of the clamping member to correct assembly and manufacturing errors, ensure that the test tubes in the test tube rack smoothly enter the clamping member of the mixing mechanism, and ensure that the test tubes on the mixing mechanism 14 can achieve precise center alignment with the test tube positions of the relay assembly, saving manpower and time costs, and achieving higher test tube grasping and placing accuracy, thereby improving instrument reliability.

[0009] In order to solve the above technical problems, a technical solution adopted in this application is: to provide an automatic mixing device, which includes: a bracket, a Z-direction lifting mechanism, an X-direction horizontal feeding mechanism and the mixing mechanism as described above; the Z-direction lifting mechanism is arranged on the bracket, and is used to drive the mixing mechanism to perform vertical lifting and lowering movements in the Z direction; the X-direction horizontal feeding mechanism is arranged on the bracket, and is used to drive the mixing mechanism to perform linear horizontal movement in the X direction.

[0010] Compared with the prior art, the automatic mixing device of the present application has the following beneficial effects:

[0011] The automatic mixing device of the present application includes a bracket, a Z-direction lifting mechanism, an X-direction horizontal feeding mechanism, and a mixing mechanism. Driven by the Z-direction lifting mechanism of the automatic mixing device, the mixing mechanism can perform vertical lifting and lowering movements in the Z direction; driven by the X-direction horizontal feeding mechanism, the mixing mechanism can perform linear horizontal movements in the X direction; and the second fixing plate and the first fixing plate of the mixing mechanism are movably coordinated to achieve fine adjustment of the position of the clamping member to correct assembly and manufacturing errors, ensure that the test tubes in the test tube rack can smoothly enter the clamping member of the mixing mechanism, and ensure that the test tubes on the mixing mechanism can achieve accurate center alignment with the test tube positions of the relay assembly, thereby saving manpower and time costs, and achieving higher test tube grasping and placing accuracy, thereby improving instrument reliability.

[0012] To solve the above technical problems, a technical solution adopted in the present application is to provide a sample analyzer, which includes: the automatic mixing device and a sampling device as described above, and the sampling device is used to sample the sample after being mixed by the automatic mixing device.

[0013] Compared with the prior art, the sample analyzer of the present application has the following beneficial effects:

[0014] The sample analyzer of the present application includes an automatic mixing device and a sampling device. Driven by the Z-direction lifting mechanism of the automatic mixing device, the mixing mechanism can perform vertical lifting and lowering movements in the Z direction; driven by the X-direction horizontal feeding mechanism, the mixing mechanism can perform linear horizontal movement in the X direction; and the second fixing plate and the first fixing plate of the mixing mechanism are movably coordinated to achieve fine-tuning of the position of the clamping member. This structure is conducive to correcting assembly and manufacturing errors, ensuring that the test tubes in the test tube rack can smoothly enter the clamping member of the mixing mechanism, and ensuring that the test tubes on the mixing mechanism can achieve precise center alignment with the test tube position of the relay assembly, saving manpower and time costs, and achieving higher test tube grasping and placing accuracy, thereby improving instrument reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a structural diagram of the first embodiment of the mixing mechanism of the present application;

[0017] Figure 2 This is a structural diagram of the second embodiment of the mixing mechanism of the present application;

[0018] Figure 3 This is a schematic structural diagram of the third embodiment of the mixing mechanism of the present application;

[0019] Figure 4 This is a structural diagram of a fourth embodiment of the mixing mechanism of the present application;

[0020] Figure 5 This is a structural diagram of the fifth embodiment of the mixing mechanism of the present application;

[0021] Figure 6 This is a structural diagram of the first embodiment of the automatic mixing device of the present application;

[0022] Figure 7 This is another structural schematic diagram of the first embodiment of the automatic mixing device of the present application;

[0023] Figure 8 This is a schematic structural diagram of the second embodiment of the automatic mixing device of the present application;

[0024] Figure 9 This is a partial structural diagram of the second embodiment of the automatic mixing device of the present application;

[0025] Figure 10 This is a structural diagram of the third embodiment of the automatic mixing device of the present application. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application.

[0027] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0029] like Figure 1 As shown, the first embodiment of the present application provides a mixing mechanism 14 , which is used to drive the test tube 200 to perform a swinging motion to mix the sample in the test tube 200 .

[0030] The mixing mechanism 14 includes a first fixing plate 141 , a second fixing plate 142 , a rotating block 143 , and a clamping member 144 .

[0031] Among them, the rotating block 143 is arranged on the second fixed plate 142, and the clamping member 144 is fixedly installed on the rotating block 143. The clamping member 144 is used to grab or release the test tube 200. The second fixed plate 142 and the first fixed plate 141 are detachably connected at the lower end, and the second fixed plate 142 and the first fixed plate 141 are movably matched to achieve fine-tuning of the position of the clamping member 144.

[0032] Compared with the prior art, the mixing mechanism 14 of the present application has the following beneficial effects: the mixing mechanism 14 of the present application includes a first fixing plate 141 and a second fixing plate 142, and the second fixing plate 142 is detachably connected to the lower end of the first fixing plate 141. The second fixing plate 142 and the first fixing plate 141 are movably matched to achieve fine-tuning of the position of the clamping member 144 to correct assembly and manufacturing errors, ensure that the test tubes 200 in the test tube 200 rack smoothly enter the clamping member 144 of the mixing mechanism 14, and ensure that the test tubes 200 on the mixing mechanism 14 can achieve precise center alignment with the test tube position of the relay assembly (not shown in the figure), saving manpower and time costs, and the test tube 200 is more accurate in grasping and placing, thereby improving the reliability of the instrument.

[0033] like Figure 2 As shown, in the second embodiment of the present application, the first fixing plate 141 includes a first main body 1411 and a first table portion 1412, and the second fixing plate 142 includes a second main body 1421 and a second table portion 1422. A pin 1413 is provided on the first table portion 1412, and a transverse oblong hole 1423 for receiving the pin 1413 is provided on the second table portion 1422. The pin 1413 is inserted into the transverse oblong hole 1423 and can move linearly in the Y direction within the transverse oblong hole 1423 to correct assembly and manufacturing errors, ensure that the test tubes 200 in the test tube 200 rack smoothly enter the clamping member 144 of the mixing mechanism 14, and ensure that the test tubes 200 on the mixing mechanism 14 can achieve precise center alignment with the test tube positions of the relay assembly.

[0034] The second platform portion 1422 is provided with screws 1424 , and the first platform portion 1412 is provided with threaded holes 1414 for receiving the screws 1424 . The first fixing plate 141 and the second fixing plate 142 are fixed together by the screws 1424 and the threaded holes 1414 .

[0035] like Figure 2 and Figure 3As shown, in the third embodiment of the present application, the first fixing plate 141 includes a first main body portion 1411 and a first table portion 1412, and the second fixing plate 142 includes a second main body portion 1421 and a second table portion 1422, wherein a first step portion 1417 is provided between the first main body portion 1411 and the first table portion 1412, and a second step portion 1418 is provided between the second main body portion 1421 and the second table portion 1422, wherein the first step portion 1417 is limitedly connected to the outer edge 14220 of the second table portion 1422, and the outer edge 14120 of the first table portion 1412 is spaced from the second step portion 1418, and the second fixing plate 142 makes a linear horizontal motion in the Y direction relative to the first fixing plate 141 to correct assembly and manufacturing errors, ensure that the test tubes 200 in the test tube 200 rack smoothly enter the clamping member 144 of the mixing mechanism 14, and ensure that the test tubes 200 on the mixing mechanism 14 can achieve accurate center alignment with the test tube position of the relay assembly.

[0036] The second platform portion 1422 is provided with screws 1424 , and the first platform portion 1412 is provided with threaded holes 1414 for receiving the screws 1424 . The first fixing plate 141 and the second fixing plate 142 are fixed to each other via the screws 1424 and the threaded holes 1414 .

[0037] like Figure 2 and Figure 4 As shown, in the fourth embodiment of the present application, the first fixing plate 141 includes a first main body portion 1411 and a first table portion 1412, and the second fixing plate 142 includes a second main body portion 1421 and a second table portion 1422, wherein a first step portion 1417 is provided between the first main body portion 1411 and the first table portion 1412, and a second step portion 1418 is provided between the second main body portion 1421 and the second table portion 1422. Among them, the outer edge 14120 of the first table portion 1412 is limitedly connected to the second step portion 1418, the first step portion 1417 and the outer edge 14220 of the second table portion 1422 are spaced apart, and the second fixed plate 142 makes a linear horizontal motion in the Y direction relative to the first fixed plate 141 to correct assembly and manufacturing errors, ensure that the test tubes 200 in the test tube 200 rack smoothly enter the clamping parts 144 of the mixing mechanism 14, and ensure that the test tubes 200 on the mixing mechanism 14 can achieve precise center alignment with the test tube positions of the relay assembly.

[0038] The second fixing plate 142 is provided with screws 1424 , and the first fixing plate 141 is provided with threaded holes 1414 for receiving the screws 1424 . The first fixing plate 141 and the second fixing plate 142 are fixed together by the screws 1424 and the threaded holes 1414 .

[0039] like Figure 5As shown, in the fifth embodiment of the present application, the first fixed plate 141 includes a first main body portion 1411 and a first table portion 1412, the second fixed plate 142 includes a second main body portion 1421 and a second table portion 1422, a base 1415 is fixedly mounted on the first table portion 1412, a first threaded hole 1416 is provided on the base 1415, and a second threaded hole 1425 is provided on the side wall of the second table portion 1422.

[0040] Among them, the mixing mechanism 14 also includes: a first screw 145 that is sequentially inserted into the first threaded hole 1416 and the second threaded hole 1425. Through the cooperation of the first screw 145, the first threaded hole 1416 and the second threaded hole 1425, the second fixing plate 142 can make a linear horizontal movement in the Y direction relative to the first fixing plate 141 to correct assembly and manufacturing errors, ensure that the test tube 200 in the test tube 200 rack smoothly enters the clamping part 144 of the mixing mechanism 14, and ensure that the test tube 200 on the mixing mechanism 14 can achieve precise center alignment with the test tube position of the relay component.

[0041] The second fixing plate 142 is provided with a second screw 1426 , and the first fixing plate 141 is provided with a third threaded hole 1416 for accommodating the second screw 1426 . The first fixing plate 141 and the second fixing plate 142 are fixed together by the second screw 1426 and the third threaded hole 1416 .

[0042] Continue reading Figure 1 and Figure 2 In one embodiment, the mixing mechanism 14 further includes: a first motor 146 , a first synchronous pulley 147 , a first synchronous belt 148 , a bearing seat 402 , a bearing 401 , a fixed shaft 403 , a first photoelectric switch 149 and an angle sensor 1491 .

[0043] The first motor 146 is arranged on one side of the first fixed plate 141, the first synchronous pulley 147 is arranged on the other side of the first fixed plate 141 and connected to the first motor 146, the rotating block 143 and the first synchronous pulley 147 are arranged on the same side, and the first synchronous belt 148 is wound around the first synchronous pulley 147 and the rotating block 143.

[0044] The bearing 401 and the bearing seat 402 are disposed at the lower end of the second fixing plate 142 , and the fixing shaft 403 passes through the bearing seat 402 and the bearing 401 .

[0045] An angle sensing piece 1491 and a rotating block 143 are fixedly installed at both ends of the fixed shaft 403 respectively. The angle sensing piece 1491 is used to sense the position of the clamping piece 144. The first photoelectric switch 149 electrically connects the angle sensing piece 1491 and the first motor 146. The first photoelectric switch 149 is used to control the operation of the first motor 146 according to the sensing result of the angle sensing piece 1491.

[0046] The first motor 146 is arranged on one side of the first fixed plate 141, the first synchronous pulley 147 is arranged on the other side of the first fixed plate 141 and is connected to the first motor 146, the rotating block 143 is arranged on the first fixed plate 141, and the rotating block 143 and the first synchronous pulley 147 are arranged on the same side, and the first synchronous belt 148 is wound around the first synchronous pulley 147 and the rotating block 143, wherein the tensioning of the first synchronous belt 148 can be controlled by an adjustment plate (not shown in the figure).

[0047] The first photoelectric switch 149 is fixedly mounted on the first fixed plate 141 via the support plate 406. The clamp 144 is fixedly mounted on the rotating block 143. The angle sensor 1491 is disposed on the first fixed plate 141 and is disposed on the same side as the first motor 146. The angle sensor 1491 is used to sense the position of the clamp 144. The first photoelectric switch 149 is electrically connected to the angle sensor 1491 and the first motor 146. The first photoelectric switch 149 is used to control the operation of the first motor 146 based on the sensing result of the angle sensor 1491, thereby controlling the movement of the rotating block 143. Optionally, the first motor 146 is a stepping motor, and the rotational position of the rotating block 143 is controlled by a combination of the first photoelectric switch 149 and the number of pulse steps of the first motor 146. The rotation angle of the rotating block 143 is 0-135 degrees. During the rotation process, the test tube protection plate 404 can prevent the test tube 200 from slipping out.

[0048] Among them, the first motor 146 moves at a constant speed at a certain gear, and the error mainly depends on the trigger sensitivity of the first photoelectric switch 149. The first photoelectric switch 149 is a photoelectric sensor with relatively high accuracy and reliability. The triggering accuracy can reach ±1ms. Therefore, the rotation of the rotating block 143 in this application is more precise.

[0049] Driven by the first motor 146, the first synchronous belt 148 is driven by the first synchronous pulley 147, and the first synchronous belt 148 drives the rotating block 143 to rotate and swing back and forth, thereby driving the clamping member 144 on the rotating block 143 to clamp the test tube 200 and rotate and swing back and forth, so as to achieve the purpose of mixing the blood sample in the test tube 200.

[0050] Furthermore, the clamping member 144 includes a clamping member base (not shown in the figure), a first clamping jaw (not shown in the figure) and a second clamping jaw (not shown in the figure), an elastic member (not shown in the figure), a shaft (not shown in the figure), a flexible member (not shown in the figure), a stopper (not shown in the figure), a cover plate (not shown in the figure) and a baffle (not shown in the figure).

[0051] The first clamping jaw includes a first action portion and a first clamping portion, the first action portion and the first clamping portion being located on either side of the hinge axis, respectively. The second clamping jaw includes a second action portion and a second clamping portion, the first action portion and the first clamping portion being located on either side of the hinge axis, respectively. The first action portion and the second action portion are positioned opposite each other, while the first clamping portion and the second clamping portion are positioned opposite each other.

[0052] Specifically, the surfaces of the first and second clamping parts that are adjacent to each other have a recessed structure for accommodating the clamped object. This recessed structure forms a clamping space, which helps increase the contact surface between the clamping parts and the clamped object, thereby improving clamping stability, dispersing the pressure of the clamping parts on the clamped object, and reducing the probability of damage and deformation of the clamped object.

[0053] The first and second clamping portions each have an outward-turned structure at one end away from the clamp base. The two outward-turned structures cooperate to form an opening-like structure that guides the object when it is retrieved, facilitating its entry into the clamping member 144. Specifically, one end of the outward-turned structure is connected to one clamping portion, and the other end extends away from the other clamping portion. The two outward-turned structures cooperate to form an outward-facing opening relative to the clamping member 144. This structure facilitates guidance when grasping a clamped object (such as a test tube 200), ensuring that the test tube 200 enters the clamping member 144 smoothly.

[0054] The elastic member is used to generate elastic force to move the first action portion and the second action portion away from each other, so that the first clamping jaw and the second clamping jaw respectively rotate relative to the clamping member base and drive the first clamping portion and the second clamping portion to approach each other to generate clamping force to clamp the clamped object.

[0055] Optionally, the elastic member is a torsion spring, which is sleeved on the first shaft. The two force arms of the torsion spring respectively abut the first and second actuating portions, thereby applying elastic force to the first and second actuating portions. Because the first hinge position, the second hinge position, and the third connection position form a triangular positional relationship, the connection between the torsion spring and the first and second actuating portions is more stable, thereby improving the security of the clamping.

[0056] like Figure 6-7 As shown, the sixth embodiment of the present application provides an automatic mixing device 10, which can be used for mixing trace blood samples, such as peripheral blood samples. Specifically, the automatic mixing device 10 includes: a bracket 11, a Z-direction lifting mechanism 12, a first X-direction horizontal feeding mechanism 13 and the aforementioned mixing mechanism 14. The Z-direction lifting mechanism 12 is arranged on the bracket 11, and is used to drive the mixing mechanism 14 to perform vertical lifting and lowering movements in the Z direction. The first X-direction horizontal feeding mechanism 13 is arranged on the bracket 11, and is used to drive the mixing mechanism 14 to perform linear horizontal movement in the X direction. The mixing mechanism 14 is used to drive the test tube 200 to perform a swinging motion to mix the sample in the test tube 200.

[0057] According to the above description, and Figure 6 as recorded, it can be seen that the Z-direction lifting mechanism 12 and / or the first X-direction horizontal feeding mechanism 13 are联动 with the mixing mechanism 14. The mixing mechanism 14 can be driven by the Z-direction lifting mechanism 12 or the first X-direction horizontal feeding mechanism 13 to perform a vertical lifting action in the Z direction or a linear horizontal movement in the X direction. Furthermore, it can drive the clamping member 144 of the mixing mechanism 14 to move to the target position, and the clamping member 144 is centered with the center of the test tube 200 to accurately clamp the test tube 200. The mixing mechanism 14 is used to drive the test tube 200 to perform a swinging movement to automatically mix the samples in the test tube 200.

[0058] Compared with the prior art, the sample analyzer of the present application has the following beneficial effects: The automatic mixing device 10 of the present application includes a bracket 11, a Z-direction lifting mechanism 12, an X-direction horizontal feeding mechanism 13, and a mixing mechanism 14. Under the drive of the Z-direction lifting mechanism 12 of the automatic mixing device 10, the mixing mechanism 14 can perform a vertical lifting action in the Z direction; under the drive of the X-direction horizontal feeding mechanism 13, the mixing mechanism 14 can perform a linear horizontal movement in the X direction; and the second fixing plate 142 of the mixing mechanism 14 is movably配合 with the first fixing plate 141 to realize fine adjustment of the position of the clamping member 144, so as to correct the assembly and manufacturing errors, ensure that the test tubes 200 in the test tube rack smoothly enter the clamping member of the mixing mechanism 14, and ensure that the test tubes 200 on the mixing mechanism 14 can achieve accurate center alignment with the test tube positions of the relay component, saving manpower and time costs, and the grasping and releasing accuracy of the test tubes 200 is higher, improving the reliability of the instrument.

[0059] In a certain embodiment, the bracket 11 includes: a vertical frame 111, a first horizontal frame 112, and a second horizontal frame 113 that are connected end to end in sequence. The second horizontal frame 113, the first horizontal frame 112, and the vertical frame 111 form a "匚"-shaped connection.

[0060] In one embodiment, the first horizontal frame 112, the second horizontal frame 113, and the vertical frame 111 are of an integral structure, and the first horizontal frame 112 and the second horizontal frame 113 are bent from the vertical frame 111.

[0061] Specifically, one end of the vertical frame 111 extends outward and is bent to form a first horizontal frame 112 perpendicular to the vertical frame 111. And one end of each of the two ends of the first horizontal frame 112 extends outward and is bent to form a second horizontal frame 113 perpendicular to the first horizontal frame 112 and parallel to the vertical frame 111.

[0062] In one embodiment, taking into account the insufficient strength and precision of the bracket 11 due to multiple bending, one end of the first horizontal frame 112 is detachably connected to the vertical frame 111, and the other end of the first horizontal frame 112 is detachably connected to the second horizontal frame 113, wherein the thickness of the first horizontal frame 112 and the second horizontal frame 113 is greater than the thickness of the vertical frame 111.

[0063] Specifically, the first horizontal frame 112 is fixed to one end of the vertical frame 111 by screws, and the second horizontal frame 113 is fixed to the end of the first horizontal frame 112 away from the vertical frame 111. Furthermore, to ensure the strength of the first horizontal frame 112 and the second horizontal frame 113, the thickness of the first horizontal frame 112 and the second horizontal frame 113 can be 2-4 times the thickness of the vertical frame 111.

[0064] In one embodiment, the Z-direction lifting mechanism 12 includes: a first track 121 , a first guide rail 122 , a second motor 123 , a second synchronous belt 124 , a first slide 125 , a shifting rod 126 and a shifting block 127 .

[0065] The second motor 123 is mounted on the stand 111. A synchronous pulley 102 is mounted on the motor shaft of the second motor 123. A second synchronous belt 124 is mounted on the synchronous pulley. The tension of the second synchronous belt 124 can be controlled by the adjustment plate 101. The first guide rail 122 is mounted on the stand 111. The first rail 121 and the first guide rail 122 are arranged parallel to each other. The first rail 121 and the first guide rail 122 are both arranged vertically. The first slide 125 is mounted on the first guide rail 122 and slidably engages with the first guide rail 122. The shift rod 126 is mounted on the slide, and the shift block 127 is fixedly mounted on the shift rod 126. The first slide 125 can have a hole structure (not shown) for inserting the shift rod 126 to enable the shift rod 126 to be mounted on the slide.

[0066] The mixing mechanism 14 also includes a second slider 150. A first fixed plate 141 is slidably mounted on the first guide rail 122 via the second slider 150. The first fixed plate 141 is fixedly connected to the shifting block 127. The second motor 123 and the second synchronous belt 124 drive the shifting rod 126 to vertically lift and lower along the first rail 121 in the Z direction. The shifting rod 126 and the shifting block 127 drive the first fixed plate 141 to vertically lift and lower along the first guide rail 122 in the Z direction.

[0067] Specifically, the shift rod 126 is fixed to the second synchronous belt 124. Driven by the second motor 123, the second synchronous belt 124 drives the shift rod 126 to perform a vertical lifting movement in the Z direction along the first track 121, and then the shift rod 126 and the shift block 127 drive the first fixed plate 141 to perform a vertical lifting movement in the Z direction along the first guide rail 122.

[0068] In one embodiment, the Z-axis lifting mechanism 12 also includes a second photoelectric switch 128, which is electrically connected to the second motor 123 and is used to control the operation of the second motor 123 to control the movement of the lever 126. Optionally, the second motor 123 is a stepping motor, and the position of the lever 126 is controlled by the second photoelectric switch 128 and the pulse step number of the second motor 123.

[0069] Specifically, the second photoelectric switch 128 includes a second microprocessor (not shown) and an optocoupler sensor 129, and the second microprocessor is connected to the first motor 123. Among them, the optocoupler sensor 129 is arranged on the moving track of the clamping member 147 of the mixing mechanism 14, and the optocoupler sensor 129 is used to detect the moving position of the clamping member 147, and the second microprocessor is used to record the displacement data and locate the position. The second motor 123 moves at a constant speed at a preset gear speed, and the position of the second motor 123 mainly depends on the sensitivity of the second photoelectric switch 128. The optocoupler sensor 129 is a photoelectric sensor with relatively high accuracy and reliability. The triggering accuracy can reach ±1ms, which makes the vertical lifting and lowering action of the fixed plate 141 of the present application in the Z direction more precise.

[0070] In one embodiment, the first X-axis horizontal feeding mechanism 13 includes: a second guide rail 131 , a third motor 132 , a sliding screw nut unit 133 , a second slide 134 , a transverse base plate 135 and a first slider 136 .

[0071] The third motor 132 is mounted on the first cross frame 112 and is optionally a lead screw motor. The second guide rail 131 is mounted on the second cross frame 113. A sliding lead screw nut unit 133 is connected to the third motor 132 and the second slide 134, respectively. A transverse base plate 135 is fixedly mounted on the second slide 134 via a first slider 136. The transverse base plate 135 is slidably mounted on the second guide rail 131 via the first slider 136. The first guide rail 122 is fixedly mounted on the transverse base plate 135. The sliding lead screw nut unit 133 is a propulsion mechanism well known to those skilled in the art, and therefore its specific structure will not be described herein.

[0072] The second slide 134 is driven by the third motor 132 and the sliding screw nut unit 133 to make a linear horizontal motion along the second guide rail 131 in the X direction. The second slide 134 is driven by the transverse substrate 135 to make a linear horizontal motion along the second guide rail 131 in the X direction. The transverse substrate 135 and the first guide rail 122 are driven by the first fixed plate 141 to make a linear horizontal motion along the second guide rail 131 in the X direction.

[0073] Specifically, driven by the third motor 132, the sliding screw nut unit 133 drives the second slide 134 to make a linear horizontal motion in the X direction along the second guide rail 131, and the second slide 134 drives the transverse substrate 135 to make a linear horizontal motion in the X direction along the second guide rail 131. At this time, the first guide rail 122 set on the transverse substrate 135 and the first fixed plate 141 set on the first guide rail 122 also synchronously make a linear horizontal motion in the X direction, thereby driving the clamping member 144 of the mixing mechanism 14 to make a linear horizontal motion in the X direction, wherein the clamping member 144 grabs or releases the test tube 200 during the linear horizontal motion in the X direction.

[0074] like Figure 8-9 As shown, the seventh embodiment of the present application provides an automatic mixing device 10. Unlike the sixth embodiment, the first X-axis horizontal feeding mechanism 13 includes: a third slider 231, a third guide rail 232, a fourth motor 233, a transverse substrate 234, a third synchronous pulley 235 and a third synchronous belt 236.

[0075] The fourth motor 233 is mounted on the main frame 111, the third guide rail 232 is mounted on the second cross frame 113, and the third synchronous pulley 235 is mounted on the main frame 111. Optionally, the fourth motor 233 is a stepper motor. A synchronous pulley is mounted on the motor shaft of the fourth motor 233, and a third synchronous belt 236 is mounted on the synchronous pulley. The traverse base plate 234 is secured to the third synchronous belt 236. The tension of the third synchronous belt 236 can be controlled by an adjustment plate (not shown).

[0076] The third synchronous belt 236 is wound around the third synchronous pulley 235 to change the direction of the third synchronous belt 236 . The transverse base plate 234 is slidably set on the third guide rail 232 through the third slider 231 , wherein the first guide rail 122 is fixedly installed on the transverse base plate 234 .

[0077] The fourth motor 233 and the third synchronous belt 236 drive the traverse substrate 234 to make a linear horizontal motion along the third guide rail 232 in the X direction, and the traverse substrate 234 and the first guide rail 122 drive the first fixed plate 141 to make a linear horizontal motion along the third guide rail 232 in the X direction.

[0078] Specifically, driven by the fourth motor 233, the third synchronous belt 236 drives the transverse substrate 234 to make a linear horizontal motion in the X direction along the third guide rail 232. At this time, the first guide rail 122 set on the transverse substrate 234 and the first fixed plate 141 set on the first guide rail 122 also synchronously make a linear horizontal motion in the X direction, thereby driving the clamping member 144 of the mixing mechanism 14 to make a linear horizontal motion in the X direction, wherein the clamping member 144 grabs or releases the test tube 200 during the linear horizontal motion in the X direction.

[0079] like Figure 10 As shown, the eighth embodiment of the present application provides an automatic mixing device 10. Different from the first and second embodiments, the automatic mixing device 10 in this embodiment further includes: a second X-direction horizontal feeding mechanism.

[0080] The second X-axis horizontal feed mechanism includes: a guide shaft 151 and a guide block 152. The guide shaft 151 is set on the stand 111, and the guide block 152 is slidably set on the guide shaft 151. The fixed plate 141 is fixedly installed on the guide block 152, and the guide block 152 drives the fixed plate 141 to make a linear horizontal motion along the guide shaft 151 in the X direction.

[0081] Specifically, the guide shaft 151 is fixedly mounted on the bracket 11, and the guide block 152 is connected to the guide shaft 151. The motor drives the guide block 152 to reciprocate under the guidance of the guide shaft 151. For example, the number of guide shafts 151 can be two to increase the stability of the movement of the guide block 152.

[0082] According to the second aspect, another embodiment of the present application provides a sample analyzer, which includes the automatic mixing device 10 described above. The sample analyzer also includes a sampling device for sampling the sample mixed by the automatic mixing device 10.

[0083] Compared with the prior art, the sample analyzer of the present application has the following beneficial effects: the sample analyzer of the present application includes an automatic mixing device 10 and a sampling device. Under the drive of the Z-direction lifting mechanism 12 of the automatic mixing device 10, the mixing mechanism 14 can perform vertical lifting and lowering movements in the Z direction; under the drive of the X-direction horizontal feeding mechanism 13, the mixing mechanism 14 can perform linear horizontal movements in the X direction; and the second fixed plate 142 and the first fixed plate 141 of the mixing mechanism 14 are movably matched to achieve fine-tuning of the position of the clamping member 144. This structure is conducive to correcting assembly and manufacturing errors, ensuring that the test tube 200 in the test tube rack smoothly enters the clamping member 144 of the mixing mechanism 14, and ensuring that the test tube 200 on the mixing mechanism 14 can achieve precise center alignment with the test tube position of the relay assembly, saving manpower and time costs, and the test tube 200 is more accurately grasped and placed, thereby improving the reliability of the instrument.

[0084] With reference to the specific embodiments, although the present application has been described in the specification and drawings, it should be understood that without departing from the scope of the present application as defined in the claims, those skilled in the art may make various changes and various equivalents may replace various elements therein. Moreover, the combination and matching of technical features, elements and / or functions between the specific embodiments herein are clear and distinct, so based on these disclosed contents, those skilled in the art can understand that the technical features, elements and / or functions in the embodiments can be combined into another specific embodiment as appropriate, unless otherwise described in the above contents.

[0085] Furthermore, many changes may be made to adapt to particular circumstances or materials according to the teachings of this application without departing from the essential scope of this application. Therefore, this application is not limited to the individual specific embodiments illustrated in the drawings and the specific embodiments described in the specification as the best mode currently contemplated for carrying out this application, but this application is intended to include all embodiments that fall within the scope of the above description and the appended claims.

Claims

1. A mixing mechanism, characterized in that: The mixing mechanism is used to drive the test tube to swing so as to mix the sample in the test tube. The mixing mechanism includes: a first fixed plate, a second fixed plate, a rotating block, and a clamping member; The rotating block is disposed on the second fixed plate, the clamping member is fixedly mounted on the rotating block, the clamping member is used to grab or release the test tube, the second fixed plate is detachably connected to the first fixed plate, and the second fixed plate and the first fixed plate are movably engaged to achieve fine adjustment of the position of the clamping member; The first fixing plate includes a first main body and a first table portion, and the second fixing plate includes a second main body and a second table portion. The first table portion is provided with a pin, and the second table portion is provided with a transverse oblong hole for receiving the pin, the pin is passed through the transverse oblong hole, and the pin can perform linear horizontal movement in the Y direction in the transverse oblong hole; A first step portion is provided between the first main body portion and the first table portion, a second step portion is provided between the second table portion and the second main body portion, the first step portion is positionally connected to the outer edge of the second table portion, the outer edge of the first table portion and the second step portion are spaced apart, or the outer edge of the first table portion and the second step portion are positionally connected, the first step portion and the outer edge of the second table portion are spaced apart, and the second fixed plate makes a linear horizontal motion in the Y direction relative to the first fixed plate.

2. The mixing mechanism according to claim 1, characterized in that: A base is fixedly mounted on the first table portion, a first threaded hole is formed on the base, and a second threaded hole is formed on the side wall of the second table portion; In which, the mixing mechanism also includes: a first screw that is sequentially inserted into the first threaded hole and the second threaded hole, and the first screw, the first threaded hole and the second threaded hole cooperate to enable the second fixing plate to make a linear horizontal movement in the Y direction relative to the first fixing plate.

3. The mixing mechanism according to claim 1, characterized in that: The mixing mechanism further includes: a first motor, a first synchronous pulley, a first synchronous belt, a bearing seat, a bearing, a fixed shaft, a first photoelectric switch and an angle sensor; The first motor is arranged on one side of the first fixed plate, the first synchronous pulley is arranged on the other side of the first fixed plate and is connected to the first motor, the rotating block and the first synchronous pulley are arranged on the same side, and the first synchronous belt is wound around the first synchronous pulley and the rotating block; The bearing seat and the bearing are arranged at the lower end of the second fixing plate, and the fixing shaft passes through the bearing seat and the bearing; The angle sensing piece and the rotating block are fixedly installed at both ends of the fixed shaft respectively, the angle sensing piece is used to sense the position of the clamping member, the first photoelectric switch is electrically connected to the angle sensing piece and the first motor, and the first photoelectric switch is used to control the operation of the first motor according to the sensing result of the angle sensing piece.

4. An automatic mixing device, characterized in that: The device comprises: a bracket, a Z-direction lifting mechanism, an X-direction horizontal feeding mechanism, and a mixing mechanism according to any one of claims 1 to 3; The Z-direction lifting mechanism is provided on the bracket and is used to drive the mixing mechanism to perform vertical lifting action in the Z direction; The X-direction horizontal feeding mechanism is arranged on the bracket and is used to drive the mixing mechanism to perform linear horizontal movement in the X direction.

5. The device according to claim 4, characterized in that The Z-direction lifting mechanism includes: a first track, a first guide rail, a second motor, a second synchronous belt, a first slide, a shifting rod, and a shifting block, wherein the second motor and the first guide rail are arranged on the bracket, the first track and the first guide rail are arranged in parallel, the slide is slidably arranged on the first guide rail, the shifting rod is mounted on the slide, the shifting block is fixedly mounted on the shifting rod, and the shifting rod and the second motor are connected via the second synchronous belt; The mixing mechanism includes: a fixed plate and a first slider, wherein the fixed plate is slidably arranged on the first guide rail via the first slider, and the fixed plate is fixedly connected to the receiving block; The second motor and the second synchronous belt drive the shifting rod to perform vertical lifting motion in the Z direction along the first track, and the shifting rod and the shifting block drive the fixed plate to perform vertical lifting motion in the Z direction along the first guide rail.

6. The device according to claim 5, characterized in that The X-axis horizontal feed mechanism includes: a second guide rail, a third motor, a sliding screw nut unit, a second slide, a transverse base plate and a first slider, wherein the third motor and the second guide rail are arranged on the bracket, the sliding screw nut unit is connected to the third motor and the second slide respectively, the transverse base plate is fixedly mounted on the second slide via the first slider, and the transverse base plate is slidably arranged on the second guide rail via the first slider, wherein the first guide rail is fixedly mounted on the transverse base plate; The second slide is driven by the third motor and the sliding screw nut unit to perform linear horizontal motion along the second guide rail in the X direction, the transverse substrate is driven by the second slide to perform linear horizontal motion along the second guide rail in the X direction, and the fixed plate is driven by the transverse substrate and the first guide rail to perform linear horizontal motion along the second guide rail, thereby driving the clamping member of the mixing mechanism to perform linear horizontal motion in the X direction.

7. A sample analyzer, characterized in that: The sample analyzer comprises: the automatic mixing device according to any one of claims 4 to 6 and a sampling device, wherein the sampling device is used to sample the sample after being mixed by the automatic mixing device.

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