Three-axis motion sampling mechanism and fully automatic genital tract secretion detector

Abstract

The present invention discloses a three-axis motion sampling mechanism, which includes a frame, a multi-axis motion unit, the multi-axis motion unit is arranged inside the frame and is composed of an X-axis motion mechanism, a Y-axis motion mechanism and a Z-axis motion mechanism; a cantilever support mechanism, the cantilever support mechanism is arranged on the frame; a sampling part, the sampling part is arranged on the Z-axis motion mechanism and is used for sampling the lower sample; wherein, the Y-axis motion mechanism is of a cantilever type, and the cantilever support mechanism is arranged at the cantilever end of the Y-axis motion mechanism and is used for supporting the Y-axis motion mechanism. The advantages of the present invention are that the yaw amount of the cantilever end is greatly reduced, so that the sampling part can perform sampling work quickly and stably; during the sampling process, under the action of the force when the sampling part rises, the lower support bearing will contact the lower surface of the support bar, and at the same time react on the lower sampling part, ensuring that the Z direction does not deform due to the cantilever during sampling, and ensuring that the sampling process is carried out quickly and stably.

Description

Technical Field

[0001] The present invention relates to medical devices, and more particularly to a three-axis motion sampling mechanism, and more particularly to a fully automatic genital tract secretion detector including the three-axis motion sampling mechanism. Background Art

[0002] In vitro diagnostic testing equipment is an instrument that can perform qualitative or quantitative analysis on a patient's body fluid samples (sputum, blood, urine, leucorrhea); in vitro diagnostic equipment is undergoing a transformation from pure manual operation, semi-automation, automation to intelligence.

[0003] Currently, the sampling mechanisms for genital tract secretion detection on the market are generally manually operated. Manual operation is inefficient, prone to fatigue, and may mix different samples, resulting in sample cross-contamination and inaccurate test results. There are some automated three-axis cantilever sampling mechanisms on the market. When these three-axis cantilever sampling mechanisms stop moving at high speed, the cantilever end deflects severely, with poor accuracy, making it difficult to achieve rapid and accurate sampling of samples. Moreover, when the frame of the machine rack undergoes slight deformation, it can no longer work properly. Summary of the Invention

[0004] The purpose of the present invention is to provide a three-axis motion sampling mechanism.

[0005] To achieve the above purpose, the present invention can adopt the following technical solutions:

[0006] The three-axis motion sampling mechanism of the present invention includes

[0007] A machine rack;

[0008] A multi-axial motion unit, which is arranged inside the machine rack and is used to achieve motion in three directions of X, Y, and Z;

[0009] A sampling part, which is arranged on the multi-axial motion unit and is used to sample the lower sample.

[0010] Preferably, it further includes

[0011] A cantilever support mechanism, which is arranged on the machine rack;

[0012] The multi-axial motion unit is composed of an X-axis motion mechanism, a Y-axis motion mechanism, and a Z-axis motion mechanism;

[0013] The sampling part is arranged on the Z-axis motion mechanism and is used to sample the lower sample;

[0014] Wherein, the Y-axis motion mechanism is of a cantilever type, and the cantilever support mechanism is arranged at the cantilever end of the Y-axis motion mechanism to support the Y-axis motion mechanism.

[0015] Preferably, the X-axis motion mechanism is an X-axis linear slide, which has an X-axis base, an X-axis slide rail, an X-axis slide, an X-axis driving motor, an X-axis driven wheel and an X-axis belt adjusting unit;

[0016] Among them, the X-axis base is a rectangular shell, and both ends of the X-axis base are fixed on the frame; the X-axis driving motor is arranged at one end of the X-axis base, and the X-axis driven wheel is arranged at the other end of the X-axis base through the X-axis belt adjusting unit; the X-axis driving motor and the X-axis driven wheel are connected and driven by an X-axis belt; the X-axis slide rail is arranged on the top of the X-axis base, and the X-axis slide which is matched with it is arranged on the X-axis slide rail. The X-axis slide rail and the X-axis slide form an X-axis moving pair mechanism; an X-axis connecting piece is arranged on the side surface of the X-axis slide, the other end of the X-axis connecting piece is fixed on the X-axis belt, and the X-axis slide is used to connect the Y-axis motion mechanism; the X-axis belt adjusting unit is used to adjust the X-axis driven wheel to automatically tension the X-axis belt.

[0017] Preferably, the Y-axis motion mechanism is a Y-axis linear slide, which has a Y-axis base, a Y-axis slide rail, a Y-axis slide, a Y-axis driving motor, a Y-axis driven wheel and a Y-axis belt adjusting unit;

[0018] Among them, the Y-axis base is fixedly connected to the X-axis slide; the Y-axis driving motor is fixed at one end of the Y-axis base, the Y-axis driven wheel is arranged at the other end of the Y-axis base through the Y-axis belt adjusting unit, and the Y-axis driving motor and the Y-axis driven wheel are connected and driven by a Y-axis belt; the Y-axis slide rail is arranged on the other side surface of the Y-axis base, and the Y-axis slide which is matched with it is arranged on the Y-axis slide rail. The Y-axis slide rail and the Y-axis slide form a Y-axis moving pair mechanism; a Y-axis connecting piece is arranged on the Y-axis belt, and the other end of the Y-axis connecting piece is fixedly connected to the Z-axis motion mechanism, which is used to transmit power to drive the Z-axis motion mechanism to move; the Y-axis belt adjusting unit is used to adjust the Y-axis driven wheel to automatically tension the Y-axis belt.

[0019] Preferably, the Z-axis motion mechanism is a Z-axis linear slide, which has a Z-axis base, a Z-axis slide rail, a Z-axis slide, a Z-axis driving motor, a Z-axis driven wheel and a Z-axis belt adjusting unit;

[0020] Among them, the Z-axis base is fixedly connected to the Y-axis connecting piece; the Z-axis driving motor is arranged at one end of the Z-axis base, the Z-axis driven wheel is arranged at the other end of the Z-axis base through the Z-axis belt adjusting unit, and the Z-axis driving motor and the Z-axis driven wheel are connected and driven by a Z-axis belt; the Z-axis slide rail is arranged on the Z-axis base, and the Z-axis slide table that cooperates with it to slide is arranged on the Z-axis slide rail. The Z-axis slide rail and the Z-axis slide table form a Z-axis moving pair mechanism; the Z-axis slide table is fixed on the Z-axis belt, converting the rotation of the Z-axis driving motor into the movement of the Z-axis slide table; the Z-axis belt adjusting unit is used to adjust the Z-axis driven wheel to automatically tension the Z-axis belt; a sampling part is arranged on the Z-axis slide table.

[0021] Preferably, the cantilever support mechanism has an L-shaped mounting plate, an upper support bearing, a lower support bearing, a side support bearing and a support unit;

[0022] The lower part of the L-shaped mounting plate is fixedly connected to the cantilever end of the Y-axis linear slide table, and the upper support bearing, the lower support bearing and the side support bearing are arranged on the upper part of the L-shaped mounting plate; the support unit has an L-shaped support plate and a support bar, the support bar is fixed on the outer side surface of the vertical plate of the L-shaped support plate, and the horizontal plate of the L-shaped support plate is connected to the frame; the rolling surfaces of the upper support bearing and the lower support bearing are respectively placed at the upper surface and the lower surface positions of the support bar, and the rolling surface of the side support bearing is placed at the outer side surface position of the vertical plate of the L-shaped support plate.

[0023] Preferably, the sampling part has a sampling base, a plunger pump motor, a plunger pump, a sampling connecting piece, an adapter, a TIP head and a TIP head sensor;

[0024] Among them, the rear side surface of the sampling base is connected to the Z-axis slide table. The plunger pump motor is arranged at the upper part of the front side surface of the sampling base, and the plunger pump is arranged at the lower part. The plunger pump motor is drivingly connected to the plunger pump; the outlet of the plunger pump is sequentially and sealingly communicated with the sampling connecting piece, the adapter and the TIP head; a sampling fixing block is arranged on the sampling base at the position of the adapter. The sampling fixing block is connected to the connecting disc above the adapter. The TIP head sensor is sleeved on the lower part of the adapter. The TIP head sensor has a mounting disc with two bolt holes and a sensing head. The TIP head sensor is fixed on the connecting disc by bolts passing through the bolt holes of the mounting disc. A spring is sleeved on the bolt between the mounting disc and the connecting disc; a sampling connecting piece is arranged on the sampling fixing block, and a sensor is installed at the lower end of the sampling connecting piece. The sensing head is at the position of the sensor for detecting the presence or absence of a TIP head.

[0025] Preferably, a pressure sensor is arranged on the sampling base, and the pressure sensor is communicated with the plunger pump through a pressure pipeline for detecting the pressure value in the plunger pump cavity.

[0026] The present invention also provides a three-axis motion sampling mechanism for an in vitro diagnostic detection device.

[0027] The advantages of the present invention are that there are two side support bearings on the vertical plate of the L-shaped support plate. The two side support bearings move in the X direction following the Y-axis linear slide. When the Y-axis linear slide stops moving in the X direction, it can support the cantilever end, and at the same time can absorb the yaw amount of the cantilever end of the Y-axis linear slide, ensuring that the yaw amount of the cantilever end is greatly reduced, so that the sampling part can perform sampling work quickly and stably, avoiding affecting the normal operation of the device; adjustment bolts are provided at both ends of the vertical plate of the L-shaped support plate, and the levelness of the support bar is adjusted by adjusting the height of the adjustment bolts to ensure the smooth movement of the Y-axis linear slide in the X-axis direction; a lower support bearing is provided on the L-shaped mounting plate. Generally, the rolling surface of the lower support bearing does not contact the lower surface of the support bar, and there are multiple mounting points of the lower support bearing on the L-shaped mounting plate to prevent the support bar from deforming and jamming and affecting the normal operation of the device; one TIP head is used for one sample, and it is discarded after use to avoid cross-contamination between samples and increasing experimental errors; moreover, during the sampling process, under the action of the force when the sampling part rises, the lower support bearing at the lower end will contact the lower surface of the support bar, and at the same time react on the lower sampling part below, ensuring that there is no deformation due to the cantilever in the Z direction during sampling and ensuring the rapid and stable progress of the sampling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of the present invention.

[0029] Figure 2 is a schematic structural diagram of the X-axis linear slide of the present invention.

[0030] Figure 3 is an isometric schematic diagram of the X-axis linear slide of the present invention.

[0031] Figure 4 is Figure 3 a partial enlarged schematic diagram of part A in

[0032] Figure 5 is a schematic structural diagram of the Y-axis linear slide of the present invention.

[0033] Figure 6 is an isometric schematic diagram of the Y-axis linear slide of the present invention.

[0034] Figure 7 is Figure 6 a partial enlarged schematic diagram of part B in

[0035] Figure 8 is an isometric schematic diagram of the Z-axis linear slide of the present invention.

[0036] Figure 9 It is an exploded view of the structure of the Z-axis linear slide of the present invention.

[0037] Figure 10 It is a schematic structural diagram of the present invention (the frame is hidden).

[0038] Figure 11 is Figure 10 A schematic structural diagram rotated 90 degrees clockwise.

[0039] Figure 12 It is an exploded view of the structure of the sampling part of the present invention.

[0040] Figure 13 It is a schematic structural diagram of the sampling part of the present invention.

[0041] Figure 14 It is a schematic structural diagram of the adapter of the present invention.

[0042] Figure 15 is Figure 14 The sectional view taken along the C-C direction in [].

[0043] Figure 16 It is an axonometric schematic diagram of the adapter of the present invention. Detailed implementation manners

[0044] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention. It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly. In the present invention, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. In addition, the descriptions such as "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0045] In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where both A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0046] As Figure 1 shown, the three-axis motion sampling mechanism described in the present invention includes a frame 1, an X-axis linear slide 2, a Y-axis linear slide 3, a Z-axis linear slide 4, a cantilever support portion 5, and a sampling portion 6;

[0047] As Figures 2 - 4 shown, the X-axis linear slide 2 has an X-axis base 21, an X-axis slide rail 22, an X-axis slide 23, an X-axis driving motor 24, an X-axis driven wheel 25, a drag chain 26, and an X-axis belt adjustment unit. The X-axis base 21 is a rectangular housing with the left and right sides removed, and both ends of the X-axis base 21 are fixed on the frame 1; the X-axis driving motor 24 is arranged between the upper and lower sides at one end of the housing, and the X-axis driven wheel 25 is arranged between the upper and lower sides at the other end of the housing and is in the same plane as the electric shaft of the X-axis driving motor 24; the X-axis driving motor 24 and the X-axis driven wheel 25 are connected and driven by an X-axis belt 27; the X-axis slide rail 22 is arranged on the top of the X-axis base 21, and an X-axis slide 23 that cooperates with it is arranged on the X-axis slide rail 22. The X-axis slide rail 22 and the X-axis slide 23 form an X-axis moving pair mechanism; an X-axis connecting piece 28 is arranged on the side of the X-axis slide, and the other end of the X-axis connecting piece 28 is fixed on the X-axis belt 27 to convert the rotation of the X-axis driving motor 24 into the movement of the X-axis slide 23; an X-axis fixing plate 29 is arranged directly above the X-axis belt 27, one end of the drag chain 26 is fixed on the X-axis fixing plate 29, and the other end of the drag chain 26 is connected to the Y-axis linear slide 3. The drag chain 26 is used to protect the power lines, signal lines, etc. passing through the drag chain 26;

[0048] X-axis belt adjustment unit, having an X-axis adjustment block 210, an X-axis fixed block 211, an X-axis spring 212 and an X-axis bolt 213. The X-axis driven pulley 25 is fixed to the upper part of the X-axis adjustment block 210. The X-axis adjustment block 210 is fixed to the X-axis base 21 by a bolt passing through the oblong hole in the X-axis adjustment block 210. The X-axis fixed block 211 is fixed to the X-axis base 21 by a bolt. An X-axis bolt 213 is provided on the X-axis fixed block 211, and a compressed X-axis spring 212 is sleeved on the X-axis bolt 213. Moreover, the X-axis spring 212 always presses against the X-axis adjustment block 210. When adjusting the X-axis belt 27, loosen the bolt on the X-axis adjustment block 210, and under the action of the X-axis spring 212, the X-axis belt 27 is automatically tensioned to prevent the X-axis belt 27 from slipping;

[0049] As Figures 5 - 7 The Y-axis linear slide 3 shown in the figure has a Y-axis base 31, a Y-axis slide rail 32, a Y-axis slide 33, a Y-axis driving motor 34, a Y-axis driven pulley 35, a wire arrangement 36 and a Y-axis belt adjustment unit. The Y-axis driving motor 34 is fixed to one end of the Y-axis base 31. The Y-axis driven pulley 35 is fixed to the other end of the Y-axis base 31, and the Y-axis driven pulley 35 and the electric shaft of the Y-axis driving motor 34 are on the same side of the Y-axis base 31. The Y-axis driving motor 34 and the Y-axis driven pulley 35 are connected and driven by a Y-axis belt 37; A Y-axis slide rail 32 is provided on the other side surface of the Y-axis base 31. A Y-axis slide 33 is provided on the Y-axis slide rail 32. The Y-axis slide rail 32 and the Y-axis slide 33 form a Y-axis moving pair mechanism; A Y-axis connecting piece 38 is provided on the lower section of the Y-axis belt 37. The other end of the Y-axis connecting piece 38 is fixedly connected to the Z-axis linear slide, for transmitting power to drive the Z-axis linear slide to move in the Y-axis direction; A Y-axis fixing plate 39 is provided directly above the Y-axis belt 37. One end of the wire arrangement 36 is fixed to the Y-axis fixing plate 39;

[0050] Y-axis belt adjustment unit, having a Y-axis adjustment block 310, a Y-axis pressing block 311, a Y-axis fixed block 312, a Y-axis spring 313 and a Y-axis bolt. The Y-axis driven pulley 35 is fixed to the Y-axis adjustment block 310. The Y-axis adjustment block 310 is fixed to the groove at the Y-axis driven pulley 35 end of the Y-axis base 31 by a bolt passing through the oblong hole in the Y-axis adjustment block 310. The Y-axis pressing block 311 is fixed to the convex platform of the Y-axis adjustment block 310. The Y-axis fixed block 312 is fixed to the bottom of the groove at the Y-axis driven pulley 35 end on the Y-axis base 31 by a bolt. A Y-axis bolt is provided on the Y-axis fixed block 312, and a compressed Y-axis spring 313 is sleeved on the Y-axis bolt. Moreover, the Y-axis spring 313 always presses against the Y-axis adjustment block 310 to realize automatic tensioning of the Y-axis belt 37 and prevent the Y-axis belt 37 from slipping;

[0051] The Y-axis linear slide 3 is fixed to the X-axis slide 23 by fixedly connecting the Y-axis drive motor 34 end of the Y-axis linear slide 3 to the X-axis slide 23. The other end of the Y-axis linear slide 3 is in a suspended state as a cantilever end, and the cantilever end is connected to the cantilever support portion, realizing the stable movement of the Y-axis linear slide 3 in the X-axis direction;

[0052] As Figures 8 - 9 shown in the Z-axis linear slide 4, which has a Z-axis base 41, a Z-axis slide rail 42, a Z-axis slide 43, a Z-axis drive motor 44, a Z-axis driven wheel 45 and a Z-axis belt adjustment unit. The Z-axis drive motor 44 is arranged at the upper end of the front side of the Z-axis base 41, and the Z-axis driven wheel 45 is arranged at the lower end of the front side of the Z-axis base 41. The Z-axis drive motor 44 and the Z-axis driven wheel 45 are connected and driven by a Z-axis belt 46; the Z-axis slide rail 42 is arranged on the Z-axis base 41, and a Z-axis slide 43 that cooperates with the Z-axis slide 43 for sliding is arranged on the Z-axis slide rail 42. The Z-axis slide rail 42 and the Z-axis slide 43 form a Z-axis moving pair mechanism; the Z-axis slide 43 is fixed to the lower section of the Z-axis belt 46, converting the rotation of the Z-axis drive motor 44 into the movement of the Z-axis slide 43; a wire arrangement mounting plate 47 is provided on the rear side of the Z-axis base 41 for extending and connecting the wire arrangement 36 to the Z-axis drive motor 44 and the sampling portion 6;

[0053] The Z-axis belt adjustment unit has a Z-axis adjustment block 48, a Z-axis fixing block 49, a Z-axis spring 410 and a Z-axis bolt. The Z-axis driven wheel 45 is fixed to the upper part of the Z-axis adjustment block 48. The Z-axis adjustment block 48 is fixed to the Z-axis base 41 by a bolt passing through an oblong hole in the Z-axis base 41. The Z-axis fixing block 49 is fixed to the Z-axis base 41 by a bolt. A Z-axis bolt is arranged on the Z-axis fixing block 49, and a Z-axis spring 410 in a compressed state is sleeved on the Z-axis bolt, and the Z-axis spring 410 always presses against the Z-axis adjustment block 48, realizing the automatic tensioning of the Z-axis belt 46 and preventing the Z-axis belt 46 from slipping;

[0054] By fixedly connecting the Y-axis slide 33 and the Y-axis connecting piece 38 of the Y-axis linear slide 3 to the Z-axis base 41 of the Z-axis linear slide 4, the movement of the Z-axis linear slide 4 in the Y-axis direction is realized;

[0055] Among them, anti-derailment devices are provided at both ends of each slide rail to prevent the slide on the slide rail from derailing;

[0056] As Figures 10 - 11The shown cantilever support part 5 has an L-shaped mounting plate 51, an upper support bearing 52, a lower support bearing 53, a side support bearing 54 and a support unit. An upper support bearing 52 is arranged on the side surface at the intersection of the horizontal section and the vertical section of the L-shaped mounting plate 51. A lower support bearing 53 is arranged below the upper support bearing 52. The top of the horizontal section of the L-shaped mounting plate 51 is fixedly connected to one end of a connecting plate. At the bottom of the other end of the connecting plate, there are two vertically arranged side support bearings 54. The rolling surfaces of the side support bearings 54 and the upper support bearing 52 are perpendicular to each other. Among them, the lower part of the vertical section of the L-shaped mounting plate 51 is fixedly connected to the cantilever end of the Y-axis linear slide 3.

[0057] The support unit has an L-shaped support plate 55 and a support bar 56. The support bar 56 has a plurality of uniformly distributed vertical oblong holes. The support bar 56 is fixed on the outer side surface of the vertical plate of the L-shaped support plate 55 by bolts passing through the plurality of oblong holes. And the support bar 56 is located between the upper support bearing 52 and the lower support bearing 53. The rolling surface of the upper support bearing 52 presses on the upper surface of the support bar 56. However, there is a certain distance between the upper support bearing 52 and the lower support bearing 53. Generally, the rolling surface of the lower support bearing 53 does not contact the lower surface of the support bar 56. And the lower support bearing 53 has multiple mounting points on the L-shaped mounting plate 51 to prevent the support bar 56 from deforming and jamming, which affects the normal operation of the device. Moreover, during the sampling process, under the action of the force generated when the sampling part 6 rises, the lower support bearing 53 will contact the lower surface of the support bar 56, and at the same time, it will react on the lower sampling part 6 below to ensure that there is no deformation in the Z direction due to the cantilever during sampling. The outer side surface of the vertical plate of the L-shaped support plate 55 contacts the rolling surfaces of the two side support bearings 54. The two side support bearings 54 move in the X direction following the Y-axis linear slide 3. When the Y-axis linear slide 3 stops moving in the X direction, it can support the cantilever end. At the same time, it can absorb the yaw amount of the cantilever end of the Y-axis linear slide 3, ensuring that the yaw amount of the cantilever end is greatly reduced, so that the sampling part 6 can perform sampling work quickly and stably, avoiding affecting the normal operation of the device. Among them, the support unit with the L-shaped support plate 55 and the support bar 56 is arranged in parallel with the X-axis linear slide 2. Adjusting bolts 57 are arranged at both upper ends above the support bar 56 on the outer side surface of the vertical plate of the L-shaped support plate 55. The adjusting bolts 57 are fixed on the outer side surface of the vertical plate of the L-shaped support plate 55 through a fixing block. By adjusting the height of the adjusting bolts 57, the levelness of the support bar 56 is adjusted to ensure the smooth movement of the Y-axis linear slide 3 in the X-axis direction.

[0058] Among them, the support unit is fixed on the frame 1 through the horizontal plate of the L-shaped support plate 55.

[0059] Such as Figures 12 - 16The sampling unit 6 shown has a sampling base 61, a plunger pump motor 62, a plunger pump 63, a sampling connector 64, an adapter 65, a TIP head 66 (the tip for collecting samples), a pressure sensor 67, and a TIP head sensor 68. The plunger pump motor 62 is provided at the upper part of the front side of the sampling base 61, and the plunger pump 63 is provided at the lower part. The plunger pump motor 62 is drivingly connected to the plunger pump 63; the Z-axis slide 43 is fixed to the rear side of the sampling base 61, enabling the sampling unit 6 to have a degree of freedom of movement in the Z-axis direction; a sensing connection plate 69 is provided on the right side of the sampling base 61, and the pressure sensor 67 is vertically downwardly mounted on the sensing connection plate 69 and is communicated with the plunger pump 63 through a pressure pipeline to detect the pressure value in the cavity of the plunger pump 63, thereby monitoring whether there is air leakage in the entire liquid path during the working process and preventing liquid leakage and splashing; the upper part of the adapter 65 has a connection disk 74, and there are two protruding rings 71 at the lower port, and a through hole is provided in the adapter 65; the outlet of the plunger pump 63 is successively and hermetically connected with the sampling connector 64, the adapter 65, and the TIP head 66; a sampling fixing block 610 is provided on the sampling base 61 at the position of the adapter 65, and the sampling fixing block 610 is connected to the connection disk 74 above the adapter 65. A sampling connector 64 is provided between the adapter 65 and the plunger pump 63. The middle part of the sampling connector 64 has a through hole, and seals are provided at the connections of the sampling connector 64 with the plunger pump 63 and the adapter 65 for sealed connection; a TIP head sensor 68 is sleeved on the lower part of the adapter 65. The TIP head sensor 68 has a mounting disk, and there are two bolt holes and a sensing head on the mounting disk. The TIP head sensor 68 is fixed to the connection disk 74 of the adapter 65 by bolts passing through the bolt holes in the mounting disk. A spring 72 is sleeved on the bolts between the mounting disk and the connection disk 74 of the adapter 65 for pressing the TIP head sensor 68 tightly; a sampling connection piece 611 is installed on the side of the sampling fixing block 610, and a sensor 73 is installed at the lower end of the sampling connection piece 611. The sensing head is between the sensors 67 for detecting the presence or absence of the TIP head 66. When there is a TIP head 66, the sensing head is between the sensors 73. When there is no TIP head 66, the TIP head sensor 68 moves downward under the action of the elastic force, and the sensing head is below the sensor 73; the lower port of the adapter 65 is connected to the TIP head 66. Under the action of the two protruding rings 71 at the lower port of the adapter 65, a sealed connection is formed between the adapter 65 and the TIP head 66; the plunger pump 63, the sampling connector 64, the adapter 65, and the TIP head 66 form a sealed channel. Under the action of the plunger pump motor 62, the plunger in the plunger pump 63 makes an up-and-down reciprocating motion, generating a pressure difference in the cavity of the plunger pump 63, thereby enabling the TIP head 66 to complete the sampling action.

[0060] A brief description of the working process of the present invention is as follows:

[0061] The movement of the sampling part 6 in the X-axis direction is realized by the X-axis linear slide 2;

[0062] The movement of the sampling part 6 in the Y-axis direction is realized by the Y-axis linear slide 3;

[0063] The movement of the sampling part 6 in the Z-axis direction is realized by the Z-axis linear slide 4;

[0064] During the movement of the sampling part 6 in the X-axis direction, the yaw amount at the cantilever end of the Y-axis linear slide 3 is supported and absorbed by the cantilever support part 5, ensuring that the yaw amount at the cantilever end is greatly reduced, so that the sampling part 6 can perform the sampling work quickly and stably, avoiding affecting the normal operation of this device;

[0065] Under the action of the plunger pump motor 62, the plunger in the plunger pump 63 reciprocates up and down, generating a pressure difference in the cavity of the plunger pump 63, so that the TIP head 66 completes the sampling action;

[0066] Step 1: The control system sends action signals to the X-axis drive motor 24, Y-axis drive motor 34, Z-axis drive motor 44 and plunger pump motor 62. The X-axis drive motor 24, Y-axis drive motor 34, Z-axis drive motor 44 and plunger pump motor 62 act to move the TIP head 66 to a specified position to aspirate liquid.

[0067] Step 2: The control system sends action signals to the X-axis drive motor 24, Y-axis drive motor 34, Z-axis drive motor 44 and plunger pump motor 62. The X-axis drive motor 24, Y-axis drive motor 34, Z-axis drive motor 44 and plunger pump motor 62 act to move the TIP head 66 to a specified position to drip liquid, completing the sampling process.

[0068] The advantages of the present invention are as follows: there are two side support bearings 54 provided on the vertical plate of the L-shaped support plate 55, and the two side support bearings 54 move in the X direction following the Y-axis linear slide 3. When the Y-axis linear slide 3 stops moving in the X direction, it can support the cantilever end, and at the same time can absorb the yaw amount of the cantilever end of the Y-axis linear slide 3, ensuring that the yaw amount of the cantilever end is greatly reduced, so that the sampling part 6 can perform sampling work quickly and stably, avoiding affecting the normal operation of the device; adjustment bolts 57 are provided at both ends of the vertical plate of the L-shaped support plate 55, and the levelness of the support bar 56 is adjusted by adjusting the height of the adjustment bolts 57 to ensure the smooth movement of the Y-axis linear slide 3 in the X-axis direction; a lower support bearing 53 is provided on the L-shaped mounting plate 51, and the rolling surface of the lower support bearing 53 generally does not contact the lower surface of the support bar 56, and there are multiple mounting points of the lower support bearing 53 on the L-shaped mounting plate 51 to prevent the support bar 56 from being deformed and jammed, affecting the normal operation of the device; by using one TIP head 66 for one sample and discarding it after use, cross-contamination between samples is avoided and experimental errors are increased; moreover, during the sampling process, under the action of the force when the sampling part 6 rises, the lower support bearing 53 at the lower end will contact the lower surface of the support bar 56, and at the same time react on the sampling part 6 below to ensure that the Z direction does not deform due to the cantilever during sampling, ensuring the rapid and stable progress of the sampling process.

[0069] In other embodiments of the present invention, the present invention also provides a fully automatic genital tract secretion detector, as Figure 1 shown, including the three-axis motion sampling mechanism of the present invention, which realizes the movement in the X-axis, Y-axis and Z-axis directions and automatic sampling.

Claims

1. A three-axis motion sampling mechanism, characterized in that, it includes a frame; a multi-axial motion unit, which is arranged inside the frame. The multi-axial motion unit is composed of an X-axis motion mechanism, a Y-axis motion mechanism and a Z-axis motion mechanism, and is used to realize the motion in three directions of X, Y and Z. Among them, the Y-axis motion mechanism is a cantilever type and has a cantilever end; a sampling part, which is arranged on the Z-axis motion mechanism and is used to sample the lower sample; and a cantilever support mechanism, which is arranged at the cantilever end of the Y-axis motion mechanism and is used to support the Y-axis motion mechanism. The cantilever support mechanism has an L-shaped mounting plate, an upper support bearing, a lower support bearing, a side support bearing and a support unit. The lower part of the L-shaped mounting plate is fixedly connected to the cantilever end of the Y-axis motion mechanism. The upper support bearing, the lower support bearing and the side support bearing are arranged on the upper part of the L-shaped mounting plate. The upper support bearing is arranged on the side surface at the intersection of the horizontal section and the vertical section of the L-shaped mounting plate. The lower support bearing is arranged below the upper support bearing. One end of a connecting plate is fixedly connected to the top of the horizontal section of the L-shaped mounting plate. At the bottom of the other end of the connecting plate, there are two vertically arranged side support bearings. The rolling surfaces of the side support bearings are perpendicular to the rolling surface of the upper support bearing. The support unit has an L-shaped support plate and a support bar. The support bar is fixed on the outer side surface of the vertical plate of the L-shaped support plate. The horizontal plate of the L-shaped support plate is connected to the frame. The support bar is located between the upper support bearing and the lower support bearing. The rolling surfaces of the upper support bearing and the lower support bearing are respectively placed at the upper surface and the lower surface positions of the support bar. When the sampling part rises, it acts on the lower support bearing to make it contact with the lower surface of the support bar, and reacts on the lower sampling part below, so that the up and down deformation in the Z direction is not caused by the cantilever. The rolling surface of the side support bearing is placed at the outer side surface position of the vertical plate of the L-shaped support plate. The side support bearing moves in the X direction following the Y-axis motion mechanism. When the Y-axis motion mechanism stops moving in the X direction, it plays a supporting role for the cantilever end and absorbs the yaw amount of the cantilever end of the Y-axis motion mechanism.

2. The three-axis motion sampling mechanism according to claim 1, characterized in that, the X-axis motion mechanism is an X-axis linear slide, which has an X-axis base, an X-axis slide rail, an X-axis slide table, an X-axis driving motor, an X-axis driven wheel and an X-axis belt adjusting unit. The X-axis base is a rectangular shell, and both ends of the X-axis base are fixed on the frame. The X-axis driving motor is arranged at one end of the X-axis base. The X-axis driven wheel is arranged at the other end of the X-axis base through the X-axis belt adjusting unit. The X-axis driving motor and the X-axis driven wheel are connected and driven by an X-axis belt. The X-axis slide rail is arranged on the top of the X-axis base, and the X-axis slide table which is matched with it is arranged on the X-axis slide rail. The X-axis slide rail and the X-axis slide table form an X-axis moving pair mechanism. An X-axis connecting piece is arranged on the side surface of the X-axis slide table, and the other end of the X-axis connecting piece is fixed on the X-axis belt. The X-axis slide table is used to connect the Y-axis motion mechanism. The X-axis belt adjusting unit is used to adjust the X-axis driven wheel to make the X-axis belt automatically tensioned.

3. The three-axis motion sampling mechanism according to claim 2, wherein, the Y-axis motion mechanism is a Y-axis linear slide, which has a Y-axis base, a Y-axis slide rail, a Y-axis slide, a Y-axis driving motor, a Y-axis driven pulley and a Y-axis belt adjusting unit. The Y-axis base is fixedly connected to the X-axis slide; the Y-axis driving motor is fixed at one end of the Y-axis base, the Y-axis driven pulley is arranged at the other end of the Y-axis base through the Y-axis belt adjusting unit, and the Y-axis driving motor and the Y-axis driven pulley are connected and driven by a Y-axis belt; the Y-axis slide rail is arranged on the other side surface of the Y-axis base, and a Y-axis slide which is matched with the Y-axis slide rail is arranged on the Y-axis slide rail. The Y-axis slide rail and the Y-axis slide form a Y-axis moving pair mechanism; a Y-axis connecting piece is arranged on the Y-axis belt, and the other end of the Y-axis connecting piece is fixedly connected to the Z-axis motion mechanism for transmitting power to drive the Z-axis motion mechanism to move; the Y-axis belt adjusting unit is used for adjusting the Y-axis driven pulley to automatically tension the Y-axis belt.

4. The three-axis motion sampling mechanism according to claim 3, wherein, the Z-axis motion mechanism is a Z-axis linear slide, which has a Z-axis base, a Z-axis slide rail, a Z-axis slide, a Z-axis driving motor, a Z-axis driven pulley and a Z-axis belt adjusting unit; wherein, the Z-axis base is fixedly connected to the Y-axis connecting piece; the Z-axis driving motor is arranged at one end of the Z-axis base, the Z-axis driven pulley is arranged at the other end of the Z-axis base through the Z-axis belt adjusting unit, and the Z-axis driving motor and the Z-axis driven pulley are connected and driven by a Z-axis belt; the Z-axis slide rail is arranged on the Z-axis base, and a Z-axis slide which is slidably matched with the Z-axis slide rail is arranged on the Z-axis slide rail. The Z-axis slide rail and the Z-axis slide form a Z-axis moving pair mechanism; the Z-axis slide is fixed on the Z-axis belt to convert the rotation of the Z-axis driving motor into the movement of the Z-axis slide; the Z-axis belt adjusting unit is used for adjusting the Z-axis driven pulley to automatically tension the Z-axis belt; a sampling part is arranged on the Z-axis slide.

5. The three-axis motion sampling mechanism according to claim 4, wherein, The sampling unit includes a sampling base, a plunger pump motor, a plunger pump, a sampling connector, an adapter, a TIP head, and a TIP head sensor; wherein, the rear side of the sampling base is connected to the Z-axis slide, the upper part of the front side of the sampling base is provided with the plunger pump motor, and the lower part is provided with the plunger pump, and the plunger pump motor is drivingly connected to the plunger pump; the outlet of the plunger pump is sequentially and sealingly connected with the sampling connector, the adapter, and the TIP head; a sampling fixing block is arranged on the sampling base at the position of the adapter, the sampling fixing block is connected to the connection disk above the adapter, the TIP head sensor is sleeved on the lower part of the adapter, the TIP head sensor has a mounting disk, the mounting disk has two bolt holes and a sensing head, and the TIP head sensor is fixed on the connection disk by bolts passing through the bolt holes of the mounting disk, and a spring is sleeved on the bolt between the mounting disk and the connection disk; a sampling connection piece is arranged on the sampling fixing block, a sensor is installed at the lower end of the sampling connection piece, and the sensing head is at the position of the sensor for detecting the presence or absence of the TIP head.

6. The three-axis motion sampling mechanism according to claim 5, characterized in that, a pressure sensor is arranged on the sampling base, and the pressure sensor is communicated with the plunger pump through a pressure pipeline for detecting the pressure value in the plunger pump cavity.

7. A full-automatic genital tract secretion detector, characterized in that: it includes the three-axis motion sampling mechanism according to any one of claims 1-6.

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