Blood collection tube vacuum plug pressing device with pressing plate levelness detection function

Abstract

The utility model discloses a blood collection tube vacuum plug pressing device with a pressing plate level detection function, which comprises a first fixing frame, a first linear actuator, a second fixing frame, a second linear actuator, a pressing plate, a vacuum cover, a laser sensor and a light reflecting plate, the output end of the first linear actuator is fixedly connected with the second fixing frame. The vacuum cover and the second linear actuator are both fixed to the second fixing frame. The output end of the second linear actuator extends into the vacuum cover and is fixedly connected with a pressing plate. First visual windows and second visual windows are symmetrically formed in the front side and the rear side of the vacuum cover, the two laser sensors are installed at the two first visual windows respectively, and the two reflectors are correspondingly installed at the two second visual windows. The horizontal state of the pressing plate can be detected in real time, so that the problems of detection lagging and insufficient precision in the prior art are solved, and the production quality and the automatic production efficiency of the vacuum blood collection tube are further guaranteed.

Description

Technical Field

[0001] This application relates to the field of medical device manufacturing equipment technology, and in particular to a vacuum plugging device for blood collection tubes with a pressure plate level detection function. Background Technology

[0002] As a core medical device for clinical blood collection, vacuum blood collection tubes require a vacuum-assisted stoppering process during production. This process necessitates both the insertion of the stopper and the creation of negative pressure within the tube. The device uses a vacuum hood to remove air from the tube, creating a pre-set negative pressure environment. Simultaneously, the up-and-down movement of a pressure plate precisely presses the stopper against the tube's end, ensuring that blood is automatically drawn into the tube under negative pressure during collection. The levelness of the pressure plate is crucial for the uniformity and sealing of the stopper. If the pressure plate is tilted, even with a vacuum hood creating negative pressure, it can lead to misalignment of the stopper insertion, uneven stress on the sealing interface, and consequently, leakage and negative pressure failure, directly impacting the clinical effectiveness of the blood collection tube.

[0003] In existing technologies, the levelness of the pressure plate in a vacuum plugging device is generally detected manually, using tools such as a level to periodically measure the pressure plate's posture. However, this method has significant drawbacks: firstly, manual inspection is inefficient and susceptible to variations in operating techniques and environmental factors, making it difficult to guarantee accuracy and failing to meet the high stability requirements of the pressure plate position in the vacuum plugging process; secondly, manual inspection cannot monitor the minute tilt changes of the pressure plate during dynamic plugging processes (such as high-frequency up-and-down movements or long-term stress vibrations), leading to a gradual deviation in the vertical alignment accuracy between the pressure plate and the tube body during production. This results in quality issues not being detected and corrected in a timely manner, ultimately causing a decrease in the pass rate of vacuum blood collection tubes and reduced production efficiency. Therefore, this invention proposes a vacuum plugging device for blood collection tubes with a pressure plate level detection function. Utility Model Content

[0004] This application provides a vacuum blood collection tube plug device with a pressure plate level detection function, which enables real-time detection of the pressure plate level to solve the problems of detection lag and insufficient accuracy in the prior art, thereby ensuring the production quality and automated production efficiency of vacuum blood collection tubes.

[0005] In view of this, this application provides a vacuum plugging device for blood collection tubes with a pressure plate level detection function, comprising: a first fixing frame, a first linear actuator, a second fixing frame, a second linear actuator, a pressure plate, a vacuum cover, a laser sensor, and a reflector;

[0006] The first linear actuator is fixedly mounted on the first mounting frame;

[0007] The output end of the first linear actuator is fixedly connected to the second fixed frame and is used to drive the second fixed frame to lift.

[0008] The vacuum hood is fixed to the bottom of the second mounting bracket;

[0009] The second linear actuator is fixedly mounted on the second mounting bracket, and the second linear actuator is located directly above the vacuum chamber;

[0010] The output end of the second linear actuator extends into the vacuum chamber and is fixedly connected to the pressure plate;

[0011] Two first viewing windows are horizontally spaced at the front side of the vacuum chamber;

[0012] The vacuum chamber is provided with second viewing windows at horizontal intervals on its rear side, each corresponding to one of the first viewing windows;

[0013] The two laser sensors are respectively installed at the two first viewing windows;

[0014] The two reflectors are installed at the two second viewing windows respectively to reflect laser signals to detect the horizontal state of the pressure plate.

[0015] Optionally, it also includes: a PLC control system;

[0016] Both laser sensors are electrically connected to the PLC control system;

[0017] The PLC control system is used to receive the detection signal from the laser sensor and compare the signal difference between the two laser sensors through a built-in program to determine whether the pressure plate has tilted.

[0018] Optionally, the PLC control system is electrically connected to the first linear actuator and the second linear actuator, respectively.

[0019] Optionally, it may also include: an alarm device;

[0020] The PLC control system is electrically connected to the alarm device and is used to control the alarm device to issue an alarm signal when the tilt of the pressure plate is detected.

[0021] Optionally, the alarm device is an audible and visual alarm.

[0022] Optionally, the vacuum shroud is connected to a vacuum pump via a pipeline;

[0023] The pipeline is equipped with a vacuum sensor and a pressure regulating valve.

[0024] Optionally, in the initial state, the vertical height of the pressure plate is higher than the vertical height of the laser sensor;

[0025] The initial state is when the device is not started and the pressure plate is not subjected to external force.

[0026] Optionally, the first linear actuator is a hydraulic cylinder.

[0027] Optionally, the second linear actuator is a pneumatic cylinder.

[0028] Optionally, both the first and second view windows are made of transparent materials.

[0029] As can be seen from the above technical solutions, the embodiments of this application have the following advantages: This vacuum blood collection tube plugging device sets laser sensors and reflectors on opposite sides of the vacuum hood. The cooperation of the two can detect the horizontal state of the pressure plate in real time. Compared with the existing technology that relies on manual use of a level to periodically detect, it significantly improves the real-time performance and accuracy of the detection. It can promptly capture the slight tilt of the pressure plate caused by uneven force during dynamic movement. At the same time, through the coordinated drive of the first linear actuator and the second linear actuator, the automatic control of the vacuum hood lifting and plugging action is realized, avoiding the lag and operation error of manual detection. It effectively solves the problems of uneven plug insertion and insufficient sealing caused by the tilt of the pressure plate, ensuring the precise alignment of the plug and the tube body and the stability of the negative pressure environment during the plugging process of the vacuum blood collection tube, thereby improving the product qualification rate and production efficiency and reducing the cost of manual intervention. Attached Figure Description

[0030] Figure 1 This is a front view of the vacuum plug device for blood collection tubes with pressure plate level detection function in the embodiments of this application;

[0031] Figure 2 This is a front view of the blood collection tube vacuum plugging device with pressure plate level detection function in this embodiment of the application after removing the first fixing frame and the first linear actuator;

[0032] Figure 3 This is a schematic diagram of the rear structure of the blood collection tube vacuum plugging device with pressure plate level detection function in this embodiment of the application after removing the first fixing frame and the first linear actuator;

[0033] Figure 4 This is a schematic diagram of the horizontal detection principle of the vacuum plug device for blood collection tubes with pressure plate horizontal detection function in the embodiments of this application;

[0034] The attached figures are labeled as follows:

[0035] 1-First fixed frame, 2-First linear actuator, 3-Second fixed frame, 4-Second linear actuator, 5-Vacuum hood, 51-First viewing window, 52-Second viewing window, 6-Pressure plate, 7-Laser sensor, 8-Reflector, 9-PLC control system. Detailed Implementation

[0036] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0037] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated 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.

[0038] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] This application provides an embodiment of a vacuum tube compression device with a pressure plate level detection function. Please refer to the following for details. Figures 1 to 4 .

[0040] The vacuum plugging device for blood collection tubes with pressure plate level detection function in this embodiment includes: a first fixed frame 1, a first linear actuator 2, a second fixed frame 3, a second linear actuator 4, a pressure plate 6, a vacuum hood 5, a laser sensor 7, and a reflector 8. The first linear actuator 2 is fixedly mounted on the first fixed frame 1, and its output end is fixedly connected to the second fixed frame 3 to drive the second fixed frame 3 to rise and fall. The vacuum hood 5 is fixed to the bottom of the second fixed frame 3, and the second linear actuator 4 is fixedly mounted on the second fixed frame 3, with the second linear actuator 4 located directly above the vacuum hood 5. The output end of the second linear actuator 4 extends into the vacuum hood 5 and is fixedly connected to the pressure plate 6. Two first viewing windows 51 are horizontally spaced at the front side of the vacuum hood 5, and two second viewing windows 52, corresponding one-to-one with the first viewing windows 51, are horizontally spaced at the rear side of the vacuum hood 5. Two laser sensors 7 are respectively installed at the two first viewing windows 51, and two reflectors 8 are correspondingly installed at the two second viewing windows 52 to reflect laser signals to detect the horizontal state of the pressure plate 6.

[0041] It should be noted that this vacuum blood collection tube plugging device uses laser sensors 7 and reflectors 8 on opposite sides of the vacuum chamber 5 to detect the horizontal state of the pressure plate 6 in real time. Compared with the existing technology that relies on manual use of a level for periodic checks, this significantly improves the real-time performance and accuracy of the detection. It can promptly capture minor tilting of the pressure plate 6 caused by uneven force during dynamic movement. At the same time, through the coordinated drive of the first linear actuator 2 and the second linear actuator 4, the lifting and lowering of the vacuum chamber 5 and the plugging action are automatically controlled, avoiding the lag and operational errors of manual detection. This effectively solves the problems of uneven plug insertion and insufficient sealing caused by the tilt of the pressure plate 6, ensuring the precise alignment of the plug and the tube body and the stability of the negative pressure environment during the plugging process of the vacuum blood collection tube. This improves the product qualification rate and production efficiency, and reduces the cost of manual intervention.

[0042] The above is Embodiment 1 of a vacuum plugging device for blood collection tubes with pressure plate level detection function provided in this application. The following is Embodiment 2 of the same device. Please refer to the following for details. Figures 1 to 4 .

[0043] The vacuum plugging device for blood collection tubes with pressure plate level detection function in this embodiment includes: a first fixed frame 1, a first linear actuator 2, a second fixed frame 3, a second linear actuator 4, a pressure plate 6, a vacuum shroud 5, a laser sensor 7, and a reflector 8. The first linear actuator 2 is fixedly mounted on the first fixed frame 1, and its output end is fixedly connected to the second fixed frame 3 to drive the second fixed frame 3 to rise and fall. The vacuum shroud 5 is fixed to the bottom of the second fixed frame 3, and the second linear actuator 4 is fixedly mounted on the second fixed frame 3, with the second linear actuator 4 located directly above the vacuum shroud 5. The output end of the second linear actuator 4 extends into the vacuum shroud 5 and is fixedly connected to the pressure plate 6. Two first viewing windows 51 are horizontally spaced at the front side of the vacuum shroud 5. Two second viewing windows 52, corresponding one-to-one with the first viewing windows 51, are horizontally spaced at the rear side of the vacuum shroud 5. Two laser sensors 7 are respectively installed at the two first viewing windows 51, and two reflectors 8 are correspondingly installed at the two second viewing windows 52 to reflect laser signals to detect the horizontal state of the pressure plate 6. Specifically, the center line connecting the two first viewing windows 51 and the center line connecting the two second viewing windows 52 are parallel to the long side of the pressure plate 6, and the first viewing windows 51 and the second viewing windows 52 are at the same horizontal height.

[0044] It is understandable that when the pressure plate 6 is initially in a horizontal position, the light emitted by the two laser sensors 7 is below the pressure plate 6 and is not blocked by the pressure plate 6. The reflector 8 can receive the signal. At this time, the laser sensor 7 cannot detect the signal of the pressure plate 6. However, once the pressure plate 6 is tilted, the light of one of the laser sensors 7 will be blocked by the pressure plate 6, and the reflector 8 opposite to it will not be able to receive the light signal.

[0045] It also includes: a PLC control system 9, and two laser sensors 7 are electrically connected to the PLC control system 9. The PLC control system 9 is used to receive the detection signals of the laser sensors 7 and compare the signal difference between the two laser sensors 7 through a built-in program to determine whether the pressure plate 6 has tilted.

[0046] The PLC control system 9 is electrically connected to the first linear actuator 2 and the second linear actuator 4. When the PLC control system 9 determines that the pressure plate 6 is tilted, it will automatically control the first linear actuator 2 and the second linear actuator 4 to stop operating.

[0047] It also includes an alarm device. The PLC control system 9 is electrically connected to the alarm device and is used to control the alarm device to issue an alarm signal when the pressure plate 6 is detected to be tilted. Specifically, the alarm device can be an audible and visual alarm.

[0048] Vacuum chamber 5 is connected to a vacuum pump via pipelines. These pipelines are equipped with a vacuum sensor and a pressure regulating valve. The vacuum sensor is electrically connected to a PLC control system 9 to monitor the vacuum level inside vacuum chamber 5 in real time. The pressure regulating valve adjusts the pressure inside vacuum chamber 5 to a preset value according to instructions from the PLC control system 9. Specifically, a sealing ring is installed at the bottom of vacuum chamber 5 to form a sealed chamber with the conveying fixture.

[0049] Understandably, in the initial state, the vertical height of the pressure plate 6 is higher than the vertical height of the laser sensor 7. The initial state is when the device is not started and the pressure plate 6 is not subjected to external force.

[0050] Specifically, the first linear actuator 2 is a hydraulic cylinder; the second linear actuator 4 is a pneumatic cylinder; the first viewing window 51 and the second viewing window 52 are both made of transparent material to ensure that the laser sensor 7 can accurately detect the position of the pressure plate 6.

[0051] In practice, the first linear actuator 2 first lifts the vacuum chamber 5. When the product moves to below the vacuum chamber 5 with the conveyor fixture, the first linear actuator 2 then moves the vacuum chamber 5 downward, causing it to contact the conveyor fixture and form a sealed environment. At this time, the push rod of the second linear actuator 4 moves the pressure plate 6 downward, and a vacuum is drawn inside the vacuum chamber 5. The pressure plate 6 then presses the rubber stopper into the blood collection tube, creating a vacuum environment inside the tube. During this process, if the pressure plate 6 is initially in a horizontal position, the light emitted by both laser sensors 7 will be below the pressure plate 6, meaning the pressure plate 6 will not be detected. If the pressure plate 6 is tilted, one of the laser sensors 7 will detect it and transmit the signal to the PLC control system 9. The PLC control system 9 will then determine if the pressure plate 6 is tilted and trigger the equipment to stop and alarm, ensuring the accuracy and stability of the equipment operation.

[0052] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A blood collection tube vacuum plunger device with a pressure plate level detection function, characterized in that, The utility model relates to a kind of laser cutting device, including: First fixed frame, first linear actuator, second fixed frame, second linear actuator, pressing plate, vacuum cover, laser sensor and reflector plate; The first linear actuator is fixedly arranged on the first fixed frame; The output end of the first linear actuator is fixedly connected with the second fixed frame, for driving the second fixed frame to lift; The vacuum cover is fixed at the bottom of the second fixed frame; The second linear actuator is fixedly arranged on the second fixed frame, and the second linear actuator is located directly above the vacuum cover; The output end of the second linear actuator extends into the vacuum cover, and the pressing plate is fixedly connected; Two first visual windows are horizontally spaced apart on the front side of the vacuum cover; Second visual windows corresponding to the first visual windows are horizontally spaced apart on the back side of the vacuum cover; Two laser sensors are respectively installed at two first visual windows; Two reflector plates are respectively installed at two second visual windows, for reflecting laser signals to detect the horizontal state of the pressing plate.

2. The blood collection tube vacuum plunger device with a pressure plate level detection function according to claim 1, characterized in that, Further comprising: PLC control system; Both of the two laser sensors are electrically connected with the PLC control system; The PLC control system is used for receiving the detection signals of the laser sensors, and comparing the signal difference of the two laser sensors through built-in program to determine whether the pressing plate is tilted.

3. The blood collection tube vacuum plunger device with a pressure plate level detection function according to claim 2, characterized in that, The PLC control system is electrically connected with the first linear actuator and the second linear actuator respectively.

4. The blood collection tube vacuum plunger device with a pressure plate level detection function according to claim 2, wherein, Further comprising: Alarm device; 5. The blood collection tube vacuum plunger device with a pressure plate level detection function according to claim 4, characterized in that, The PLC control system is electrically connected with the alarm device, for controlling the alarm device to send alarm signal when detecting that the pressing plate is tilted.

6. The blood collection tube vacuum plunger device with a pressure plate level detection function according to claim 1, wherein, The alarm device is an audible and visual alarm. The vacuum cover is connected with a vacuum pump through a pipeline.

7. The blood collection tube vacuum plunger device with a pressure plate level detection function according to claim 1, wherein, A vacuum degree sensor and a pressure regulating valve are arranged on the pipeline. In the initial state, the vertical height of the pressing plate is higher than the vertical height of the laser sensor.

8. The blood collection tube vacuum plunger device with a pressure plate level detection function according to claim 1, wherein, The initial state is the state that the device is not started and the pressing plate is not subjected to external force.

9. The blood collection tube vacuum plunger device with a pressure plate level detection function according to claim 1, wherein, The first linear actuator is an oil cylinder.

10. The blood collection tube vacuum plunger device with a pressure plate level detection function according to claim 1, wherein, The second linear actuator is an air cylinder. The first visual window and the second visual window are made of transparent material.

Images