Universal airtightness detection machine for heparin cap

Abstract

The application relates to a universal airtightness detection machine for heparin caps, and relates to the technical field of medical product detection.The application comprises a chassis, a conveying assembly, a detection assembly and a discharging assembly.The application realizes automatic and accurate feeding of heparin caps through a conveying belt and a rubber positioning sleeve in the conveying assembly, replaces the feeding mode of manual work or a complex conveying belt in the prior art, adopts a turntable in combination with worm gear transmission to realize stable conveying and positioning of the heparin caps, and combines an arc-shaped baffle to realize stable conveying and positioning of the heparin caps, a guide column ensures accurate butt joint of a detection head, an air pressure sensor realizes real-time monitoring of air pressure changes to accurately judge airtightness, improves detection precision and stability, a discharging assembly realizes the effect of classification guidance through the rotation of a discharging guide piece, a discharging channel, a qualified channel and an unqualified channel, solves the problem that the prior art cannot classify and discharge, a controller and an operation panel coordinate the operation of each component, and the whole realizes automatic and consecutive operation of feeding, detection and classified discharging, and improves work efficiency.

Description

Technical Field

[0001] This application relates to the field of medical product testing technology, and in particular to a universal airtightness testing machine for heparin caps. Background Technology

[0002] A heparin cap is a puncture-compatible infusion connector commonly used in intravenous infusion therapy as an injection port for flushing and sealing the infusion line. Compared to other infusion connectors, using a heparin cap can reduce patients' medical costs and improve nurses' work efficiency.

[0003] An existing patent (publication number: CN218725101U) discloses a universal airtightness testing device for heparin cap assembly, including a base, a worktable fixedly mounted on the base, multiple sets of gears rotatably mounted on the top surface of the worktable, a conveyor belt on the worktable, toothed chains fixedly mounted on both the inner and outer walls of the conveyor belt, the conveyor belt being driven by the toothed chains onto the multiple sets of gears, the conveyor belt having a triangular cross-section, a notch on the front side of the worktable, and two connecting rods fixedly mounted on the front side of the base, with a movable plate slidably mounted between the two connecting rods. When a heparin cap that has completed testing is driven by the conveyor belt to a position near the movable plate, the movable plate is controlled to slide upwards, and multiple ejector rods on the movable plate eject the corresponding heparin cap from its placement slot, facilitating rapid unloading of the heparin cap and achieving the effect of rapid testing and unloading.

[0004] While the device described in the aforementioned comparative document can detect heparin caps, it cannot easily classify and dispense qualified and unqualified heparin caps. To address this issue, a universal airtightness testing machine for heparin caps is proposed. Utility Model Content

[0005] The purpose of this application is to provide a universal airtightness testing machine for heparin caps, which has the function of sorting and feeding materials, and solves the problems mentioned in the background art.

[0006] The present application provides a universal airtightness testing machine for heparin caps, which adopts the following technical solution: A universal airtightness testing machine for heparin caps includes a base frame, a conveying assembly, a testing assembly, and a feeding assembly. The testing assembly includes a turntable rotatably mounted on the inner wall of the base frame. The edge of the turntable is provided with uniformly distributed transfer grooves. An arc-shaped baffle adapted to the transfer grooves is fixedly connected to the upper surface of the base frame. The arc-shaped baffle is located on one side of the turntable. A worm gear is fixedly connected to the rotating shaft end of the turntable. A second servo motor and a worm are installed on the bottom surface of the base frame.

[0007] The feeding assembly includes a feeding guide plate installed on the upper surface of the base frame. The feeding guide plate is located at the tail end of the arc-shaped baffle and does not contact the outer surface of the turntable. The tail end of the base frame is fixedly connected to a feeding channel. The output end of the feeding channel is connected to a qualified channel and an unqualified channel. A rotatable lever is installed on the inner wall of the feeding channel.

[0008] By adopting the above technical solution, the conveying component can transport the heparin caps to be tested into the transfer slot in the testing component. Then, the transfer slot is rotated by the turntable, and the heparin caps are limited by the arc baffle to achieve precise positioning of the testing position. This facilitates stable testing of heparin caps one by one. The feeding guide plate in the feeding component guides the tested heparin caps into the feeding channel. By rotating the deflector, heparin caps with different test results can be guided into the qualified channel and the unqualified channel respectively. This solves the problem of inconvenient classification and feeding in the existing technology, realizes automatic classification of products after testing, and improves the overall work efficiency.

[0009] Preferably, the conveying assembly includes a conveyor belt mounted on the upper surface of the base frame, an outer surface of the conveyor belt having a first servo motor mounted thereon, the output shaft of the first servo motor being fixedly connected to the rotating shaft of the conveyor belt, and uniformly distributed rubber positioning sleeves fixedly connected to the outer surface of the conveyor belt, the inner diameter of the rubber positioning sleeves being adapted to the inner diameter of the transfer groove.

[0010] By adopting the above technical solution, the first servo motor in the conveying component drives the conveyor belt, and the rubber positioning sleeve can stably position the heparin cap. It is also compatible with the transfer trough, which facilitates the accurate delivery of the heparin cap into the transfer trough. This realizes the automated feeding of heparin caps, avoids the tediousness of manual feeding, and ensures the stability of the feeding process, providing a reliable guarantee for subsequent testing procedures.

[0011] Preferably, the worm gear meshes with the worm wheel, and the output shaft end of the second servo motor is fixedly connected to the rotating shaft end of the worm gear.

[0012] By adopting the above technical solution, the second servo motor drives the worm to rotate, and the worm meshes with the worm wheel to drive the turntable to rotate. The worm wheel and worm gear transmission has the characteristics of smooth transmission and high precision, which can make the turntable rotate intermittently at a set angle, ensuring that the heparin cap in the transfer slot can accurately reach the detection position, improving the accuracy of the detection position and ensuring the reliability of the detection results.

[0013] Preferably, a bracket is fixedly connected to the upper surface of the base frame, a cylinder is installed at the top of the bracket, and a connecting plate is fixedly connected to the output end of the cylinder.

[0014] By adopting the above technical solution, the bracket provides installation support for the cylinder, and the cylinder drives the connecting plate to move up and down, which can drive the detection head to move closer to or away from the heparin cap, realizing the rapid docking and separation of the detection head and the heparin cap. This simplifies the driving structure of the detection head, makes operation convenient, and ensures stable pressure during detection, thereby improving the stability of the detection process.

[0015] Preferably, two guide posts are fixedly connected to the upper surface of the connecting plate, and the two guide posts are slidably sleeved on both sides of the bracket.

[0016] By adopting the above technical solution, the guide post is slidably sleeved on both sides of the bracket, and plays a guiding role when the connecting plate moves up and down, avoiding the connecting plate from shifting, ensuring that the detection head can be accurately aligned with the port of the heparin cap, ensuring the sealing effect during detection, reducing detection errors caused by positional shift, and improving detection accuracy.

[0017] Preferably, an external air source receiver is installed at one end of the connecting plate, the output end of the external air source receiver is connected to an air guide pipe, a detection head is installed at the output end of the air guide pipe, and a pressure sensor is installed on a section of the air guide pipe.

[0018] By adopting the above technical solution, the external air source receiver supplies air to the detection head through the air duct, and the air pressure sensor can monitor the air pressure change in the air duct in real time. The air pressure change is used to determine whether the air tightness of the heparin cap is qualified. The structure is compact, can directly reflect the sealing performance of the heparin cap, and the test data is intuitive and easy to quickly judge the test results.

[0019] Preferably, a third servo motor is installed on the bottom surface of the feeding channel, and the output shaft end of the third servo motor is fixedly connected to the rotating shaft end of the lever.

[0020] By adopting the above technical solution, the third servo motor drives the paddle to rotate, and the paddle can be controlled to rotate left and right according to the test results, so as to achieve the classification guidance of qualified and unqualified heparin caps. The automation level is high, which replaces manual classification, reduces manual intervention, and improves classification efficiency and accuracy.

[0021] Preferably, a controller and an operation panel are mounted on the upper surface of the base frame. The controller and the operation panel are electrically connected, and the electrical components inside the conveying assembly, the detection assembly, and the unloading assembly are all electrically connected to the controller.

[0022] By adopting the above technical solution, the controller is electrically connected to the operation panel and to the electrical components in the conveying component, detection component, and unloading component. The operating parameters can be set through the operation panel, and the controller coordinates the orderly operation of each component, which has a certain degree of automation control effect. The operation is simple, the intensity of manual operation is reduced, and the coordination of each process is ensured, thereby improving the overall operating efficiency of the equipment.

[0023] In summary, this application includes at least one of the following beneficial technical effects: This universal heparin cap airtightness testing machine achieves automated and precise feeding of heparin caps through a conveyor belt and rubber positioning sleeve in the conveying component, replacing the manual or complex conveyor belt feeding methods in existing technologies. The testing component uses a turntable with worm gear and worm drive, combined with an arc baffle to achieve stable conveying and positioning of heparin caps. Guide columns ensure precise docking of the testing head, and air pressure sensors monitor air pressure changes in real time to accurately determine airtightness, improving testing accuracy and stability. The unloading component uses unloading guide plates, unloading channels, qualified channels, and unqualified channels, combined with the rotation of the paddle to create a classification and guidance effect, solving the problem of unclassified unloading in existing technologies. The controller and operation panel coordinate the operation of each component, realizing automated and continuous operation of feeding, testing, and classification unloading, improving work efficiency, with a more compact and practical structure and more complete functions. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall front view structure of this application; Figure 2 This is a schematic diagram of the overall side view structure of this application; Figure 3 This is a partial bottom view of the structure of this application; Figure 4 This is a partial side view of the structure of this application; Figure 5 This is a partial top view of the planar structure of this application.

[0025] In the picture: 1. Base frame; 2. Conveying assembly; 201. Conveyor belt; 202. First servo motor; 203. Rubber positioning sleeve; 3. Detection assembly; 301. Turntable; 302. Transfer trough; 303. Arc-shaped baffle; 304. Worm gear; 305. Worm; 306. Second servo motor; 307. Bracket; 308. Cylinder; 309. Connecting plate; 310. Guide column; 311. External air source receiver; 312. Air guide pipe; 313. Detection head; 314. Air pressure sensor; 4. Unloading assembly; 401. Unloading guide plate; 402. Unloading channel; 403. Qualified channel; 404. Unqualified channel; 405. Paddle; 406. Third servo motor; 5. Controller; 6. Operation panel. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0027] Example 1: A universal airtightness testing machine for heparin caps, referring to... Figure 1 , Figure 2 and Figure 3 The system includes a base frame 1, a conveying assembly 2, a detection assembly 3, and a feeding assembly 4. A controller 5 and an operation panel 6 are mounted on the upper surface of the base frame 1. The controller 5 and operation panel 6 are electrically connected. The electrical components inside the conveying assembly 2, detection assembly 3, and feeding assembly 4 are all electrically connected to the controller 5. Operating parameters can be set via the operation panel 6, and the controller 5 coordinates the orderly operation of each assembly, achieving a certain degree of automation. Operation is simple, reducing manual labor intensity while ensuring the coordination of each process and improving the overall operating efficiency of the equipment. The detection assembly 3 includes a turntable 301 rotatably mounted on the inner wall of the base frame 1. Evenly distributed transfer grooves 302 are formed on the edge of the turntable 301. A component fixedly connected to the transfer grooves 302 is mounted on the upper surface of the base frame 1. A matching arc-shaped baffle 303 is located on one side of the turntable 301. A worm gear 304 is fixedly connected to the rotating shaft end of the turntable 301. A second servo motor 306 and a worm 305 are installed on the bottom surface of the base frame 1. The worm 305 meshes with the worm gear 304. The output shaft end of the second servo motor 306 is fixedly connected to the rotating shaft end of the worm 305. The second servo motor 306 drives the worm 305 to rotate. The worm 305 meshes with the worm gear 304 to drive the turntable 301 to rotate. The worm gear transmission has the characteristics of smooth transmission and high precision. It can make the turntable 301 rotate intermittently at a set angle to ensure that the heparin cap in the transfer groove 302 can accurately reach the detection position, improve the accuracy of the detection position, and ensure the reliability of the detection results.

[0028] Reference Figure 1 , Figure 2 and Figure 3 The feeding assembly 4 includes a feeding guide plate 401 mounted on the upper surface of the base frame 1. The feeding guide plate 401 is located at the tail end of the arc-shaped baffle 303 and does not contact the outer surface of the turntable 301. The tail end of the base frame 1 is fixedly connected to a feeding channel 402. The output end of the feeding channel 402 is connected to a qualified channel 403 and an unqualified channel 404. A rotatable lever 405 is installed on the inner wall of the feeding channel 402. A third servo motor 406 is installed on the bottom surface of the feeding channel 402. The output shaft end of the third servo motor 406 is fixedly connected to the rotating shaft end of the lever 405. The third servo motor 406 drives the lever 405 to rotate. The corresponding lever action can be controlled according to the detection result to achieve the classification guidance of qualified and unqualified heparin caps. The automation level is high, which replaces manual classification, reduces manual intervention, and improves classification efficiency and accuracy.

[0029] Example 2: A universal airtightness testing machine for heparin caps, referring to... Figure 2 , Figure 4 and Figure 5Based on the same concept as Embodiment 1 above, this embodiment proposes a conveying assembly 2 including a conveyor belt 201 mounted on the upper surface of the base frame 1. A first servo motor 202 is mounted on the outer surface of the conveyor belt 201. The output shaft end of the first servo motor 202 is fixedly connected to the rotating shaft end of the conveyor belt 201. Uniformly distributed rubber positioning sleeves 203 are fixedly connected to the outer surface of the conveyor belt 201. The inner diameter of the rubber positioning sleeves 203 is adapted to the inner diameter of the transfer groove 302. In the conveying assembly 2, the first servo motor 202 drives the conveyor belt 201 to drive the transmission. The rubber positioning sleeves 203 can stably position the heparin caps. Since they are adapted to the transfer groove 302, it is convenient to accurately transport the heparin caps into the transfer groove 302, realizing the automated feeding of heparin caps, avoiding the tediousness of manual feeding, and ensuring the stability of the feeding process, providing a reliable guarantee for subsequent testing procedures.

[0030] Reference Figure 2 , Figure 3 and Figure 4 A bracket 307 is fixedly connected to the upper surface of the base frame 1. A cylinder 308 is mounted on the top of the bracket 307. A connecting plate 309 is fixedly connected to the output end of the cylinder 308. The bracket 307 provides mounting support for the cylinder 308. The cylinder 308 drives the connecting plate 309 to move up and down, which can move the detection head 313 closer to or away from the heparin cap, realizing the rapid docking and separation of the detection head 313 and the heparin cap. This simplifies the driving structure of the detection head 313, makes operation convenient, and ensures stable pressure during detection, thus improving the stability of the detection process. Two guide posts 310 are fixedly connected to the upper surface of the connecting plate 309. The two guide posts 310 are slidably sleeved on both sides of the bracket 307. The guide posts 310 slidably sleeved on both sides of the bracket 307 play a guiding role when the connecting plate 309 moves up and down, preventing the connection from being interrupted. The offset of the connecting plate 309 ensures that the detection head 313 is accurately aligned with the port of the heparin cap, guaranteeing the sealing effect during testing, reducing detection errors caused by positional offset, and improving detection accuracy. An external air source receiver 311 is installed at one end of the connecting plate 309. The output end of the external air source receiver 311 is connected to the air guide tube 312. The detection head 313 is installed at the output end of the air guide tube 312. A pressure sensor 314 is installed on the section of the air guide tube 312. The external air source receiver 311 supplies air to the detection head 313 through the air guide tube 312. The pressure sensor 314 can monitor the air pressure change in the air guide tube 312 in real time. The air pressure change is used to determine whether the airtightness of the heparin cap is qualified. The structure is compact, can directly reflect the sealing performance of the heparin cap, and the test data is intuitive, making it easy to quickly judge the test results.

[0031] The implementation principle of this application embodiment is as follows: After setting the working parameters through the operation panel 6, the controller 5 coordinates the start of each component. The first servo motor 202 in the conveyor component 2 drives the conveyor belt 201 to rotate. The rubber positioning sleeve 203 carries the heparin cap to be tested and moves with the conveyor belt 201, accurately sending the heparin cap into the transfer groove 302 of the turntable 301 in the detection component 3. Then, the second servo motor 306 drives the worm gear 305 to rotate. The worm gear 305 meshes with the worm wheel 304 to drive the turntable 301 to rotate intermittently at a set angle. The arc-shaped baffle 303 limits the heparin cap in the transfer groove 302 to ensure that it moves stably with the turntable 301 to the detection position. At this time, the cylinder 308 on the bracket 307 pushes the connecting plate 309 down, and the guide column 310 The sliding guide along the bracket 307 ensures that the detection head 313 is precisely aligned with the port of the heparin cap. The external air source receiver 311 supplies air to the heparin cap through the air duct 312. The air pressure sensor 314 monitors the air pressure changes in the air duct 312 in real time and transmits the data to the controller 5 to determine whether the airtightness is qualified. After the test is completed, the turntable 301 continues to rotate, sending the heparin cap to the unloading guide plate 401. The heparin cap enters the unloading channel 402 along the unloading guide plate 401. The controller 5 controls the third servo motor 406 to operate according to the test results, driving the lever 405 to rotate left or right, guiding the unqualified heparin cap into the unqualified channel 404 and the qualified heparin cap into the qualified channel 403, realizing the continuous operation of automated feeding, testing and sorting unloading.

[0032] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A universal airtightness testing machine for heparin caps, comprising a base frame (1), a conveying assembly (2), a testing assembly (3), and a feeding assembly (4), characterized in that: The detection component (3) includes a turntable (301) rotatably mounted on the inner wall of the base frame (1). The turntable (301) has evenly distributed transfer grooves (302) at its edge. An arc-shaped baffle (303) adapted to the transfer grooves (302) is fixedly connected to the upper surface of the base frame (1). The arc-shaped baffle (303) is located on one side of the turntable (301). A worm gear (304) is fixedly connected to the shaft end of the turntable (301). A second servo motor (306) and a worm (305) are installed on the bottom surface of the base frame (1). The feeding assembly (4) includes a feeding guide plate (401) installed on the upper surface of the base frame (1). The feeding guide plate (401) is located at the tail end of the arc-shaped baffle (303) and does not contact the outer surface of the turntable (301). The tail end of the base frame (1) is fixedly connected to a feeding channel (402). The output end of the feeding channel (402) is connected to a qualified channel (403) and an unqualified channel (404). A rotatable lever (405) is installed on the inner wall of the feeding channel (402).

2. The universal airtightness testing machine for heparin caps according to claim 1, characterized in that: The conveying assembly (2) includes a conveyor belt (201) mounted on the upper surface of the base frame (1). A first servo motor (202) is mounted on the outer surface of the conveyor belt (201). The output shaft end of the first servo motor (202) is fixedly connected to the rotating shaft end of the conveyor belt (201). A uniformly distributed rubber positioning sleeve (203) is fixedly connected to the outer surface of the conveyor belt (201). The inner diameter of the rubber positioning sleeve (203) is adapted to the inner diameter of the transfer groove (302).

3. The universal airtightness testing machine for heparin caps according to claim 1, characterized in that: The worm (305) meshes with the worm wheel (304), and the output shaft end of the second servo motor (306) is fixedly connected to the rotating shaft end of the worm (305).

4. The universal airtightness testing machine for heparin caps according to claim 1, characterized in that: A bracket (307) is fixedly connected to the upper surface of the base frame (1), and a cylinder (308) is installed at the top of the bracket (307). A connecting plate (309) is fixedly connected to the output end of the cylinder (308).

5. A universal airtightness testing machine for heparin caps according to claim 4, characterized in that: Two guide posts (310) are fixedly connected to the upper surface of the connecting plate (309), and the two guide posts (310) are slidably sleeved on both sides of the bracket (307).

6. A universal airtightness testing machine for heparin caps according to claim 4, characterized in that: An external air source receiver (311) is installed at one end of the connecting plate (309). The output end of the external air source receiver (311) is connected to an air guide pipe (312). A detection head (313) is installed at the output end of the air guide pipe (312). A pressure sensor (314) is installed on the pipe section of the air guide pipe (312).

7. A universal airtightness testing machine for heparin caps according to claim 1, characterized in that: A third servo motor (406) is installed on the bottom surface of the feeding channel (402), and the output shaft end of the third servo motor (406) is fixedly connected to the rotating shaft end of the lever (405).

8. A universal airtightness testing machine for heparin caps according to claim 1, characterized in that: The upper surface of the base frame (1) is equipped with a controller (5) and an operation panel (6), which are electrically connected. The electrical components inside the conveying assembly (2), the detection assembly (3), and the unloading assembly (4) are all electrically connected to the controller (5).

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