Intelligent detection mechanism of artery blood sampling assembly machine

By introducing visual inspection and intelligent sorting mechanisms, the problem of low efficiency in manual inspection during the assembly of traditional arterial blood collection devices has been solved, realizing automated inspection and intelligent sorting, and improving production efficiency and inspection accuracy.

CN223571381UActive Publication Date: 2025-11-21ZHEJIANG HUANCHOU MASCH EQUIP MFG CO LTD
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Patent Information

Application Number
CN202423044830.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-10
Publication Date
2025-11-21
Estimated Expiration
2034-12-10

AI Technical Summary

Technical Problem

In the traditional arterial blood collection device assembly process, manual inspection is required to check whether the core is pressed into the rubber stopper, which is inefficient and prone to errors.

Method used

By introducing visual inspection technology and intelligent sorting mechanism, automated inspection is carried out through CCD inspection camera and ring LED light, and intelligent sorting of unqualified and qualified rubber plugs is achieved by combining high-pressure air nozzle.

Benefits of technology

It improves testing efficiency and accuracy, reduces manual intervention, achieves highly efficient automated production, and ensures stable and reliable system operation.

✦ Generated by Eureka AI based on patent content.

Smart Images

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    Figure CN223571381U_ABST
Patent Text Reader

Abstract

The utility model provides an intelligent detection mechanism of an arterial blood sampling assembly machine, which comprises an intelligent detection assembly arranged at a discharge port of the arterial blood sampling assembly machine, and the intelligent detection assembly comprises an outlet detection disc, a C-shaped baffle plate, a waste material removal port, a visual detection mechanism, a qualified product discharge port, a waste material removal mechanism, a qualified product discharge mechanism and a controller, wherein the outlet detection disc is horizontally arranged at a discharge port of the artery blood sampling assembly machine. According to the intelligent detection mechanism of the artery blood sampling assembly machine, automatic detection is achieved through the visual detection mechanism, the detection efficiency and accuracy are improved, unqualified and qualified rubber plugs are intelligently and respectively discharged through the waste removing mechanism and the qualified product discharging mechanism according to the detection result, manual intervention is reduced, and the detection efficiency is improved. The whole process is high in automation degree, the production efficiency is improved, all assemblies are uniformly controlled through the controller, and stable and reliable operation of the system is ensured.
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Description

TECHNICAL FIELD

[0001] The utility model relates to arterial blood sampling machine technical field, concretely relates to a kind of intelligent detection mechanism of arterial blood sampling machine. BACKGROUND

[0002] Rubber plug and core in arterial blood sampling machine are its important component parts, in production, core needs to be pressed into rubber plug, generally using arterial blood sampling machine to press core into rubber plug, in the traditional arterial blood sampling machine assembly process, it is generally relied on artificial detection whether core is pressed into rubber plug, and rubber plug without pressing core is artificially sorted out, which is not only inefficient, but also prone to error.

[0003] Therefore, an intelligent detection mechanism of arterial blood sampling machine is provided. UTILITY MODEL CONTENT

[0004] The utility model provides an intelligent detection mechanism of arterial blood sampling machine to solve the problems in the background art, by introducing advanced visual detection technology and intelligent sorting mechanism, efficient, accurate automated detection and sorting are realized.

[0005] The specific technical scheme is as follows:

[0006] An intelligent detection mechanism of arterial blood sampling machine, including the intelligent detection assembly installed at the discharge port of arterial blood sampling machine, the intelligent detection assembly includes outlet detection disc, C-shaped surrounding baffle, waste rejection port, visual detection mechanism, qualified product discharge port, waste rejection mechanism, qualified product discharge mechanism and controller, wherein:

[0007] The outlet detection disc is horizontally arranged at the discharge port of the arterial blood sampling machine, and a plurality of rubber plug clamping grooves are arranged at equal angles on the edge of the outlet detection disc, a support shaft is fixedly installed at the center of the outlet detection disc, the support shaft is vertically and rotatably installed on the workbench, and the bottom end of the support shaft is fixedly connected with the rotating shaft of the driving motor, and the driving motor is fixedly installed in the interior of the workbench;

[0008] The C-shaped surrounding baffle is fixedly installed on the upper portion of the workbench, and the C-shaped surrounding baffle surrounds the edge of the outlet detection disc, and a notch is formed in the C-shaped surrounding baffle;

[0009] The waste rejection port is fixedly installed at the bottom of the C-shaped surrounding baffle, and the waste rejection port is communicated with the notch;

[0010] The visual detection mechanism is installed at the bottom of the waste rejection port;

[0011] The qualified product discharge port is fixedly installed at the bottom of the C-shaped surrounding baffle plate, and is arranged close to the tail end of the C-shaped surrounding baffle plate.

[0012] The waste removing mechanism is installed at the upper portion of the C-shaped surrounding baffle plate, and is arranged at a position corresponding to the position of the notch.

[0013] The qualified product discharging mechanism is installed at the upper portion of the C-shaped surrounding baffle plate, and is arranged at a position corresponding to the position of the qualified product discharge port.

[0014] The controller is electrically connected with the arterial blood sampling assembly machine, the visual detection mechanism, the waste removing mechanism, the qualified product discharging mechanism and the driving motor respectively.

[0015] The intelligent detection mechanism of the arterial blood sampling assembly machine, wherein the visual detection mechanism comprises a CCD detection camera electrically connected with the controller, the CCD detection camera is fixedly installed on the workbench, and the lens of the CCD detection camera is arranged to face the waste removing port, and the part of the waste removing port facing the CCD detection camera is made of transparent glass or transparent plastic.

[0016] The intelligent detection mechanism of the arterial blood sampling assembly machine, wherein the visual detection mechanism further comprises a light source electrically connected with the controller, the light source is located between the lens of the CCD detection camera and the waste removing port, and the light source is a ring-shaped LED lamp.

[0017] The intelligent detection mechanism of the arterial blood sampling assembly machine, wherein the waste removing mechanism comprises a support one and a high-pressure air blowing nozzle one, the support one is fixedly installed at the upper portion of the C-shaped surrounding baffle plate, the high-pressure air blowing nozzle one is fixedly installed on the support one, the air outlet end of the high-pressure air blowing nozzle one is arranged to be inclined towards the notch, the air inlet end of the high-pressure air blowing nozzle one is connected with the air outlet of a high-pressure air pump one through a pipeline, and the high-pressure air pump one is electrically connected with the controller.

[0018] The intelligent detection mechanism of the arterial blood sampling assembly machine, wherein the qualified product discharging mechanism comprises a support two and a high-pressure air blowing nozzle two, the support two is fixedly installed at the upper portion of the C-shaped surrounding baffle plate, the high-pressure air blowing nozzle two is fixedly installed on the support two, the air outlet end of the high-pressure air blowing nozzle two is arranged to be inclined towards the qualified product discharge port, the air inlet end of the high-pressure air blowing nozzle two is connected with the air outlet of a high-pressure air pump two through a pipeline, and the high-pressure air pump two is electrically connected with the controller.

[0019] The intelligent detection mechanism of the arterial blood sampling assembly machine, wherein the support shaft is rotatably connected with the workbench through a bearing, the inner ring of the bearing is fixedly connected with the support shaft, and the outer ring of the bearing is fixedly connected with the workbench.

[0020] The utility model has the advantages of the following beneficial effects:

[0021] The intelligent detection mechanism of the arterial blood sampling assembly machine provided by the utility model realizes automatic detection through the visual detection mechanism, improves detection efficiency and accuracy, and according to detection results, the waste removing mechanism and the qualified product discharging mechanism intelligently discharge unqualified and qualified rubber plugs respectively, reduce manual intervention, the whole process has high automation degree, production efficiency is improved, and the controller is used for uniformly controlling the components, so that stable and reliable operation of the system is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 FIG. 1 is a structural schematic diagram of the intelligent detection mechanism of the arterial blood sampling assembly machine provided by the utility model embodiment 1;

[0023] Figure 2 FIG. 2 is a schematic diagram of the intelligent detection mechanism of the arterial blood sampling assembly machine provided by the utility model embodiment 1 when used in combination with the arterial blood sampling assembly machine;

[0024] Figure 3 FIG. 3 is a side view and sectional view schematic diagram of the intelligent detection mechanism of the arterial blood sampling assembly machine provided by the utility model embodiment 1 when used in combination with the arterial blood sampling assembly machine;

[0025] Figure 4 FIG. 4 is a structural schematic diagram of the intelligent detection mechanism of the arterial blood sampling assembly machine provided by the utility model embodiment 2.

[0026] In the drawings:

[0027] 1, outlet detection disc; 11, rubber plug slot; 12, support shaft; 13, bearing;

[0028] 2, C-shaped fence plate; 21, notch;

[0029] 3, waste removing port;

[0030] 4, qualified product discharge port;

[0031] 5, waste removing mechanism; 51, support one; 52, high-pressure air nozzle one;

[0032] 6, qualified product discharging mechanism; 61, support two; 62, high-pressure air nozzle two;

[0033] 7, visual detection mechanism; 71, CCD detection camera; 72, light source;

[0034] 8, arterial blood sampling assembly machine; 81, rubber plug loading machine; 82, core loading machine; 9, rubber plug; 10, workbench. DETAILED DESCRIPTION

[0035] The technical solutions of the present application will be further described below in combination with the drawings and through specific embodiments.

[0036] It should be understood that the drawings are only used for illustrative description, and the representations are only schematic diagrams, not physical diagrams, and should not be understood as a limitation on the present patent; in order to better illustrate the embodiments of the present application, some components in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0037] The same or similar reference numerals in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore the terms describing the positional relationship in the drawings are only used for illustrative description, and should not be understood as a limitation on the present patent, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0038] In the description of the present application, unless otherwise explicitly specified and limited, if the term "connection" and the like indicating the connection relationship between components appears, the term should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] Embodiment

[0040] The intelligent detection mechanism of the arterial blood sampling assembly machine provided in the embodiment, as shown in Figures 1-3 The intelligent detection mechanism of the arterial blood sampling assembly machine provided in the embodiment, as shown in

[0041] The arterial blood sampling assembly machine 8 is provided with a rubber plug feeding machine 81 and a core feeding machine 82 for matching the work of the arterial blood sampling assembly machine 8, the rubber plug feeding machine 81 is used to send the rubber plug 8 into the interior of the arterial blood sampling assembly machine 8, and the core feeding machine 82 is used to send the core into the interior of the arterial blood sampling assembly machine 8, and the arterial blood sampling assembly machine 8 is used to press the core into the interior of the rubber plug 8;

[0042] The outlet detection disc 1 is horizontally arranged at the discharge port of the arterial blood sampling assembly machine 8, and a plurality of rubber plug clamping grooves 11 are arranged at equal angles on the edge of the outlet detection disc 1, so that the rubber plug discharged from the discharge port of the arterial blood sampling assembly machine 8 can enter the rubber plug clamping groove 11 when the outlet detection disc 1 rotates, and a supporting shaft 12 is fixedly installed at the center of the outlet detection disc 1, the supporting shaft 12 is vertically and rotatably installed on the workbench 10, and the bottom end of the supporting shaft 12 is fixedly connected with the rotating shaft of the driving motor, and the driving motor is fixedly installed in the interior of the workbench 10, and the driving motor is used to drive the supporting shaft 12 to rotate the outlet detection disc 1.

[0043] The C-shaped blocking plate 2 is fixedly installed on the upper portion of the workbench 10 and surrounds the edge of the outlet detection disc 1, and a gap 21 is arranged on the C-shaped blocking plate 2, and the C-shaped blocking plate 2 plays a limiting role and can prevent the rubber plug 9 in the rubber plug clamping groove 11 from falling off.

[0044] The waste removal port 3 is fixedly installed at the bottom of the C-shaped blocking plate 2 and is communicated with the gap 21, and the unqualified rubber plug 9 can be removed through the waste removal port 3.

[0045] The visual detection mechanism 7 is installed at the bottom of the waste removal port 3, and the visual detection mechanism 7 is used to detect whether the core is installed in the rubber plug 9, and when the visual detection mechanism 7 detects that the core is not installed in the rubber plug 9, the waste removal mechanism 5 removes the rubber plug 9 without the core to the interior of the waste removal port 3.

[0046] The qualified product discharge port 4 is fixedly installed at the bottom of the C-shaped blocking plate 2 and is arranged close to the tail end of the C-shaped blocking plate 2, and the qualified product discharge port 4 is used for discharging the qualified rubber plug 9 with the core.

[0047] The waste removal mechanism 5 is installed on the upper portion of the C-shaped blocking plate 2, and the position of the waste removal mechanism 5 corresponds to the position of the gap 21, and the waste removal mechanism 5 is used to remove the rubber plug 9 without the core to the interior of the waste removal port 3.

[0048] The qualified product discharge mechanism 6 is installed on the upper portion of the C-shaped blocking plate 2, and the position of the qualified product discharge mechanism 6 corresponds to the position of the qualified product discharge port 4, and the qualified product discharge mechanism 6 is used to discharge the qualified rubber plug 9 with the core through the qualified product discharge port 4.

[0049] The controller is electrically connected with the arterial blood sampling assembly 8, the visual detection mechanism 7, the waste removing mechanism 5, the qualified product discharging mechanism 6 and the driving motor respectively, and is used to control the arterial blood sampling assembly 8, the visual detection mechanism 7, the waste removing mechanism 5, the qualified product discharging mechanism 6 and the driving motor to work automatically.

[0050] Specifically, in the embodiment, the visual detection mechanism 7 includes a CCD detection camera 71 electrically connected with the controller, the CCD detection camera 71 is fixedly installed on the workbench 10, and a lens of the CCD detection camera 71 is arranged opposite to the waste removing port 3, a part of the waste removing port 3 opposite to the CCD detection camera 71 is made of transparent glass or transparent plastic, and the CCD detection camera 71 is arranged to detect whether the core is installed in the rubber plug 9 passing through the waste removing port 3.

[0051] Specifically, in the embodiment, the visual detection mechanism 7 further includes a light source 72 electrically connected with the controller, the light source 72 is located between the lens of the CCD detection camera 71 and the waste removing port 3, and the light source 72 is a ring-shaped LED lamp, and the light source 72 is arranged to provide light for the CCD detection camera 71, so as to improve the detection capability of the CCD detection camera 71.

[0052] Specifically, in the embodiment, the waste removing mechanism 5 includes a support 51 and a high-pressure air blowing nozzle 52, the support 51 is fixedly installed on the upper portion of the C-shaped surrounding baffle 2, the high-pressure air blowing nozzle 52 is fixedly installed on the support 51, an air outlet end of the high-pressure air blowing nozzle 52 is obliquely arranged towards the gap 21, an air inlet end of the high-pressure air blowing nozzle 52 is communicated with an air outlet of a high-pressure air pump 1 through a pipeline, the high-pressure air pump 1 is electrically connected with the controller, the high-pressure air blowing nozzle 52 is arranged to blow the rubber plug 9 that is detected as unqualified into the inside of the waste removing port 3, and the high-pressure air pump 1 is arranged to provide a high-pressure air source for the high-pressure air blowing nozzle 52.

[0053] Specifically, in the embodiment, the qualified product discharging mechanism 6 includes a support 61 and a high-pressure air blowing nozzle 62, the support 61 is fixedly installed on the upper portion of the C-shaped surrounding baffle 2, the high-pressure air blowing nozzle 62 is fixedly installed on the support 61, an air outlet end of the high-pressure air blowing nozzle 62 is obliquely arranged towards the qualified product discharging port 4, an air inlet end of the high-pressure air blowing nozzle 62 is communicated with an air outlet of a high-pressure air pump 2 through a pipeline, the high-pressure air pump 2 is electrically connected with the controller, the high-pressure air blowing nozzle 62 is arranged to blow the rubber plug 9 that is detected as qualified into the inside of the qualified product discharging port 4, and the high-pressure air pump 2 is arranged to provide a high-pressure air source for the high-pressure air blowing nozzle 62.

[0054] Specifically, in the embodiment, the support shaft 12 is rotatably connected to the workbench 10 through a bearing 13, the inner ring of the bearing 13 is fixedly connected to the support shaft 12, and the outer ring of the bearing 13 is fixedly connected to the workbench 10. The bearing 13 can ensure that the support shaft 12 can stably rotate.

[0055] Specifically, in the embodiment, the controller can be an S7-200 super small PLC controller, and the CCD detection camera 71 can be a scientific sCMOS camera of Zyla 4.2PLUS type, which has high resolution and high dynamic range and is suitable for various industrial detection applications.

[0056] Embodiment 2

[0057] The intelligent detection mechanism of the arterial blood sampling assembly machine provided in the embodiment is different from that in Embodiment 1 in that, as shown in Figure 4 The CCD detection camera 71 is fixedly installed on the workbench 10, but the lens of the CCD detection camera 71 can not be directly opposite the waste removal port 3, and can be installed at other stations, as long as the lens of the CCD detection camera 71 can detect the rubber plug 9 in any one rubber plug slot 11. At the same time, an encoder operation detection is provided, and the defective product is discharged along with the rotation angle of the outlet detection disc 1. When the defective product reaches the waste removal port 3, the controller controls the waste removal mechanism 5 (high-pressure air nozzle 52) to blow the detected unqualified rubber plug into the interior of the waste removal port 3.

[0058] The encoder is electrically connected to the controller, and can be a high-precision encoder of LIM1525, LIM1615, LIF71, and LIF41 type.

[0059] In summary, the intelligent detection mechanism of the arterial blood sampling assembly machine provided in the embodiment has the following advantages:

[0060] Automatic detection: The visual detection mechanism 7 realizes automatic detection, improving detection efficiency and accuracy.

[0061] Intelligent sorting: According to the detection results, the waste removal mechanism 5 and the qualified product discharge mechanism 6 intelligently discharge unqualified and qualified rubber plugs, respectively, reducing manual intervention.

[0062] High-efficiency production: The entire process has high automation degree, improving production efficiency.

[0063] Reliable operation: The controller uniformly controls each component to ensure stable and reliable operation of the system.

[0064] Work flow

[0065] 1. Feeding stage:

[0066] The rubber plug feeding machine 81 feeds the rubber plug into the inside of the arterial blood sampling assembly machine 8.

[0067] The core feeding machine 82 feeds the core into the inside of the arterial blood sampling assembly machine 8.

[0068] The arterial blood sampling assembly machine 8 presses the core into the inside of the rubber plug.

[0069] 2. Detection preparation stage:

[0070] The outlet detection disc 1 rotates under the driving of the driving motor, and the rubber plug clamping groove 11 at the edge thereof receives the rubber plug discharged from the discharge port of the arterial blood sampling assembly machine 8.

[0071] The C-shaped surrounding baffle 2 plays a limiting role to prevent the rubber plug from falling off from the rubber plug clamping groove 11.

[0072] 3. Detection stage:

[0073] The visual detection mechanism 7 (including the CCD detection camera 71 and the light source 72) detects whether the core is installed in the inside of the rubber plug passing through the waste removal port 3.

[0074] If the rubber plug without the core is detected, the controller sends a signal to the waste removal mechanism 5.

[0075] 4. Sorting stage:

[0076] The waste removal mechanism 5 (high-pressure air blowing nozzle 1 52) blows the unqualified rubber plug detected into the inside of the waste removal port 3 for discharge.

[0077] The qualified product discharge mechanism 6 (high-pressure air blowing nozzle 2 62) blows the qualified rubber plug detected into the inside of the qualified product discharge port 4 for discharge.

[0078] The above is only the preferred embodiment of the present application, and does not limit the implementation and protection scope of the present application. For those skilled in the art, it should be realized that any equivalent replacement and obvious change obtained by applying the content of the present application should be included in the protection scope of the present application.

Claims

1. An intelligent detection mechanism of an arterial blood sampling assembly machine, characterized in that, The application relates to an intelligent detection assembly installed at the discharge port of an arterial blood sampling assembly machine (8), which comprises an outlet detection disc (1), a C-shaped surrounding baffle (2), a waste removal port (3), a visual detection mechanism (7), a qualified product discharge port (4), a waste removal mechanism (5), a qualified product discharge mechanism (6) and a controller, wherein: the outlet detection disc (1) is horizontally arranged at the discharge port of the arterial blood sampling assembly machine (8), a plurality of rubber plug card slots (11) are arranged at the edges of the outlet detection disc (1) at equal angles, a supporting shaft (12) is fixedly arranged at the center of the outlet detection disc (1), the supporting shaft (12) is vertically and rotatably arranged on a workbench (10), the bottom end of the supporting shaft (12) is fixedly connected with the rotating shaft of a driving motor, and the driving motor is fixedly arranged in the workbench (10). The C-shaped surrounding baffle (2) is fixedly arranged on the upper portion of the workbench (10) and surrounds the edges of the outlet detection disc (1), and a gap (21) is arranged in the C-shaped surrounding baffle (2). The waste removal port (3) is fixedly arranged at the bottom of the C-shaped surrounding baffle (2) and is communicated with the gap (21). The visual detection mechanism (7) is arranged at the bottom of the waste removal port (3). The qualified product discharge port (4) is fixedly arranged at the bottom of the C-shaped surrounding baffle (2) and is arranged close to the tail end of the C-shaped surrounding baffle (2). The waste removal mechanism (5) is arranged on the upper portion of the C-shaped surrounding baffle (2) and is arranged at a position corresponding to the position of the gap (21). The qualified product discharge mechanism (6) is arranged on the upper portion of the C-shaped surrounding baffle (2) and is arranged at a position corresponding to the position of the qualified product discharge port (4). The controller is electrically connected with the arterial blood sampling assembly machine (8), the visual detection mechanism (7), the waste removal mechanism (5), the qualified product discharge mechanism (6) and the driving motor. The visual detection mechanism (7) comprises a CCD detection camera (71) electrically connected with the controller, the CCD detection camera (71) is fixedly arranged on the workbench (10), the lens of the CCD detection camera (71) is arranged opposite to the waste removal port (3), and the part of the waste removal port (3) opposite to the CCD detection camera (71) is made of transparent glass or transparent plastic. The visual detection mechanism (7) further comprises a light source (72) electrically connected with the controller, the light source (72) is arranged between the lens of the CCD detection camera (71) and the waste removal port (3), and the light source (72) is a ring-shaped LED lamp.

2. The intelligent detection mechanism of the arterial blood sampling assembly machine according to claim 1, wherein, ​ 3. The intelligent detection mechanism of the arterial blood sampling assembly machine according to claim 2, characterized in that, ​ 4. The intelligent detection mechanism of the arterial blood sampling assembly machine according to claim 3, wherein, The waste removing mechanism (5) comprises a support (51) and a high-pressure air nozzle (52), the support (51) is fixedly installed on the upper portion of the C-shaped surrounding baffle (2), the high-pressure air nozzle (52) is fixedly installed on the support (51), and the air outlet end of the high-pressure air nozzle (52) is obliquely arranged towards the gap (21); the air inlet end of the high-pressure air nozzle (52) is communicated with the air outlet of a high-pressure air pump (1) through a pipeline, and the high-pressure air pump (1) is electrically connected with the controller.

5. The intelligent detection mechanism of the arterial blood sampling assembly machine according to claim 4, wherein, The qualified product discharging mechanism (6) comprises a support (61) and a high-pressure air nozzle (62), the support (61) is fixedly installed on the upper portion of the C-shaped surrounding baffle (2), the high-pressure air nozzle (62) is fixedly installed on the support (61), and the air outlet end of the high-pressure air nozzle (62) is obliquely arranged towards the qualified product discharging port (4); the air inlet end of the high-pressure air nozzle (62) is communicated with the air outlet of a high-pressure air pump (2) through a pipeline, and the high-pressure air pump (2) is electrically connected with the controller.

6. The intelligent detection mechanism of the arterial blood sampling assembly machine according to claim 5, wherein, The support shaft (12) is rotatably connected with the workbench (10) through a bearing (13), the inner ring of the bearing (13) is fixedly connected with the support shaft (12), and the outer ring of the bearing (13) is fixedly connected with the workbench (10).