A sealing performance detection device and method for processing recycled antibacterial medical bottles

Abstract

The application relates to a sealing performance detection device and method for processing regenerated antibacterial medical bottles, and belongs to the technical field of sealing performance detection. The device comprises a base, the upper surface of the base is fixed with a rack and a detection cylinder respectively, a cylinder is installed at the top of the rack, a cover plate is connected to the inner side of the rack, and an air inlet pipe is arranged in the cover plate. The device can adaptively clamp medical bottles of different specifications, can form double sealing of the bottle opening through end face compression and outer side holding, can rely on a spring to adaptively adjust the compression force, can realize flexible sealing protection, and can avoid damaging the bottle body; meanwhile, the mechanical linkage structure is used to automatically complete the air path pre-evacuation operation, the air path is automatically sealed after the pipeline residual air is exhausted, residual air pressure interference is effectively eliminated, the positive pressure pressure maintaining detection precision is improved, the device has high overall universality, stable and reliable sealing, small detection error, and is suitable for sealing detection of various medical bottle bodies.

Description

Technical Field

[0001] This invention relates to the field of sealing performance testing technology, specifically to a sealing performance testing device and method for processing regenerated antibacterial medical bottles. Background Technology

[0002] The intelligent pressure sensor utilizes the piezoresistive sensing principle to sense the gas pressure inside the detection chamber through an internal sensitive element, converting the physical quantity of gas pressure into a recognizable electrical signal. During the detection process, it monitors the pressure changes inside the chamber in real time. If the medical bottle is not sealed properly and gas leakage occurs, the pressure inside the chamber will change due to pressure drop. The sensor will provide real-time feedback of the pressure fluctuation signal, thereby realizing leak detection and sealing performance assessment.

[0003] With the deepening of the global concept of green and sustainable development in healthcare, the implementation of policies for the resource recycling of medical plastic waste, and the continuous upgrading of requirements for aseptic protection and cross-infection control in clinical drug use, environmentally friendly recycled antibacterial medical plastic bottles have gradually replaced traditional new ordinary medical plastic bottles and are widely used in medical scenarios such as drug storage, reagent holding, medical consumable dispensing, and aseptic drug packaging. These recycled antibacterial medical bottles are prepared by purifying, melting, modifying, and functionally blending recycled medical polymer substrates, compounded with nano-inorganic antibacterial agents, natural plant antibacterial components, and biocompatible modified fillers. They possess multiple characteristics including resource recycling, low carbon emissions, broad-spectrum and long-lasting antibacterial properties, excellent biocompatibility, low dissolution and precipitation, and gas barrier properties. The sealing integrity of medical packaging containers is a core indicator for ensuring the sterility and efficacy of drugs, preventing the intrusion of external microorganisms, and preventing leakage and deterioration of contents. It directly relates to patient medication safety and the compliance of medical product quality. Therefore, all medical containers must undergo comprehensive sealing performance testing before leaving the factory. However, existing sealing performance testing devices have the following deficiencies in actual use:

[0004] Existing testing equipment cannot be adapted to multiple models and diameters of medical bottles. When testing bottles of different specifications, it is necessary to frequently change sealing fixtures, clamps and sealing accessories. Equipment changeover is cumbersome and testing efficiency is low. The device's sealing and clamping force is fixed and cannot be adjusted to adapt to different bottle mouth sizes. Large-diameter bottle mouths are prone to insufficient clamping and poor sealing, resulting in gap leaks. Small-diameter, thin-walled bottle mouths are prone to deformation and edge damage due to excessive clamping force, causing irreversible damage to the medical bottle. At the same time, the bottle mouth clamping and top surface sealing cannot be synchronized, making the seal prone to misalignment, resulting in poor sealing stability, high dispersion of batch test results, and poor versatility. In addition, the device is not equipped with a pre-test gas venting and exhaust structure, so residual pressure and stagnant gas in the pipeline cannot be vented in advance. When filling, residual pressure directly enters the bottle, disrupting the initial test gas pressure benchmark and causing inconsistent gas pressure benchmarks for each test. During gas pressure testing, pressure drift and false leaks are easily caused, leading to misjudgments. During water testing, stagnant gas overflows and forms interfering bubbles, masking real micro-leaks, leading to missed or incorrect detections and significantly reducing leak detection accuracy. Meanwhile, the continuous impact of residual pressure on the sealing surface can easily expand the sealing gap, and the accumulation of residual gas circulation can easily cause moisture and impurities to accumulate in the gas path, affecting the cleanliness of the gas source and failing to meet the cleanliness requirements of medical production. Furthermore, the gas pressure benchmarks are inconsistent in multiple tests, resulting in poor test stability and low data repeatability, making it difficult to meet the needs of large-scale high-precision quality inspection of medical bottles. Summary of the Invention

[0005] The purpose of this invention is to provide a sealing performance testing device and method for processing regenerated antibacterial medical bottles, so as to solve the problems mentioned in the background art. The technical solution of this invention provides a solution that is significantly different from the existing technology, addressing the problem that the existing technical solutions are too simplistic.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a sealing performance testing device and method for processing regenerated antibacterial medical bottles, comprising a base, a frame and a testing cylinder respectively fixed on the upper surface of the base, a cylinder mounted on the top of the frame, and a cover plate connected to the inner side of the frame. An air inlet pipe is provided through the inside of the cover plate, and the air inlet end of the air inlet pipe is connected to an external air supply source through a hose. A pressure sensor is installed inside the air outlet end of the air inlet pipe. The device also includes limiting rods, four of which are fixed at equal angles to the upper surface of the base about the center of the testing cylinder. The base has a sliding connection between the four limiting rods and the lifting plate. The left bearing on the upper surface of the base is connected to a telescopic threaded rod, and a driving pinion is fixedly fitted at the lower end of the telescopic threaded rod. A motor is installed on the left side inside the base, and the output end of the motor is fixedly connected to the bottom of the driving pinion. A driven large gear ring is rotatably connected to the bottom of the inner wall of the detection cylinder, and clamping plates are set at equal angles on the inner side of the driven large gear ring on the inner wall of the detection cylinder. A pressure adjustment assembly is set inside the cover plate, and an air venting assembly is set on the right side inside the cover plate.

[0007] Preferably, the top of the cover plate is fixedly connected to the lower surface of the lifting plate, and the telescopic end of the cylinder is fixedly connected to the upper surface of the lifting plate by bolts.

[0008] Preferably, the driving pinion and the driven large gear ring are meshed, the bottom of the six clamping plates are slidably connected to the inner wall of the detection cylinder, and the inner side of the clamping plates is provided with rubber pads. The outer side of the six clamping plates and the inner side of the driven large gear ring are hinged together by connecting plates.

[0009] Preferably, the clamping force adjusting assembly includes a driving outer ring, which is slidably disposed inside the cover plate. A clamping inner ring is fixedly installed on the inner side of the driving outer ring by multiple crossbars. A threaded sleeve is bolted to the left side of the driving outer ring. A sealing clamping head is disposed inside the cover plate below the clamping inner ring. A telescopic cylinder is fixedly connected at an equal angle between the top of the sealing clamping head and the bottom of the clamping inner ring. A buffer spring is installed at the bottom of the inner wall of the telescopic cylinder. An adjusting block is slidably connected inside the telescopic cylinder above the buffer spring.

[0010] Preferably, the threaded sleeve is threadedly connected to the outside of the telescopic threaded rod, the sealing pressure head is slidably connected to the inside of the cover plate, and the bottom of the sealing pressure head is set with an inward concave structure. The top of the adjusting block extends out of the outer surface of the telescopic cylinder, and the top of the adjusting block is fixedly connected to the bottom of the inner pressing ring by bolts. The bottom of the adjusting block is fixedly connected to the top of the buffer spring.

[0011] Preferably, a sealing sleeve is provided inside the cover plate below the sealing pressure head, and movable plates are connected at equal angles to the center of the sealing sleeve inside the cover plate. Guide blocks are fixedly connected to the outer sides of the six movable plates, and connecting blocks are bolted at equal angles to the bottom of the drive outer ring.

[0012] Preferably, the side of the guide block away from the movable plate is slidably connected to the inner wall of the cover plate via a protrusion, and a first spring is installed between the end of the protrusion and the inner wall of the cover plate, and the positions of the connecting block and the guide block correspond one-to-one.

[0013] Preferably, the air venting assembly includes an exhaust pipe, which is fixedly installed on the side of the intake pipe, and an electromagnetic pressure relief valve is installed inside the exhaust pipe. A support plate and a mounting plate are respectively connected to the upper and lower sides of the right side of the cover plate. A slider is slidably connected to the lower surface of the support plate, and a second spring is installed between the right side of the slider and the inner wall of the support plate. A movable contact switch is slidably connected to the right side of the upper surface of the mounting plate, and a third spring is installed between the bottom of the movable contact switch and the interior of the mounting plate. Fixed contact switches are installed between the upper surface of the movable contact switch and the bottom of the slider. A wedge block is bolted between the left side of the upper surface of the mounting plate and the left side of the slider.

[0014] Preferably, the internal air passages of the exhaust pipe and the intake pipe are interconnected, the top of the support plate is fixedly mounted on the outer surface of the crossbar by bolts, the left side of the movable contact switch is fixedly connected to the outer surface of the telescopic cylinder, and the electromagnetic pressure relief valve is electrically connected to both the fixed contact switch and the movable contact switch.

[0015] Preferably, a method for testing the sealing performance of recycled antibacterial medical bottles includes the following steps:

[0016] S1: The motor on the base drives the telescopic threaded rod to rotate, which drives the active pinion to mesh with the driven large gear ring to rotate. Through the connecting plate, the clamping plates are pushed to retract towards each other, adaptively clamping bottles of different sizes; the cylinder drives the lifting plate to move down, so that the cover plate and the detection cylinder are molded together, completing the positioning and sealing preparation of the bottle.

[0017] S2: The telescopic threaded rod drives the threaded sleeve plate, the outer ring and the inner ring to move downwards, and the adjusting block compresses or stretches the buffer spring to achieve constant force pressing of the sealing head; the connecting block squeezes the guide block, which drives the sealing sleeve to cover the bottle mouth to form a double seal;

[0018] S3: The sealing clamping head moves down to retract the telescopic cylinder, and the mounting plate moves up to make the movable contact switch contact the fixed contact switch, triggering the electromagnetic pressure relief valve to vent the residual air in the air inlet pipe; after moving down further, the contacts separate, the pressure relief valve closes, the air circuit is sealed, and the inflation and pressure holding test is ready.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. This invention uses gear meshing to drive the connecting plate to rotate, causing multiple clamping plates to retract inward synchronously. It can adaptively clamp and fix medical bottles with different outer diameter specifications, with a wide clamping range, stable and reliable positioning, and can adapt to various bottle sizes, making it highly versatile. After mold closing, the sealing and pressing head presses and seals the bottle mouth end face, and together with the sealing sleeve, it covers and seals the outer circumferential side of the bottle mouth, forming a double sealing structure for the bottle mouth. This effectively improves the sealing reliability, avoids gas leakage, and ensures stable subsequent inflation testing.

[0021] 2. This invention utilizes a telescopic threaded rod linkage transmission to cause the inner clamping ring to drive the adjusting block to adaptively compress or stretch the buffer spring, achieving constant force flexible clamping. The clamping force can be automatically adjusted according to different bottle mouth sizes, preventing overpressure damage to the bottle body while ensuring a tight seal. At the same time, the inclined plane transmission drives the sealing sleeve to radially retract and hug the bottle mouth, adaptively adapting to the outer edge of various bottle mouth sizes, resulting in a high degree of sealing fit and good flexible sealing effect.

[0022] 3. During the pressing process of the sealing head, the present invention can realize automatic pre-emption of the air circuit and sequential opening and closing of valves through the linkage structure of telescopic cylinder, contact switch and wedge slider; at the initial stage of pressing, the electromagnetic pressure relief valve is automatically opened to discharge the residual air in the pipeline, eliminating the interference of residual air pressure on the detection accuracy; after the emptying is completed, the pressure relief valve is automatically closed to seal the air circuit. No additional electrical control timing is required, the mechanical linkage response is accurate, effectively improving the data accuracy of positive pressure holding detection and reducing detection error. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0024] Figure 2 This is a side sectional view of the base and frame structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the connection structure between the cover plate and the lifting plate of the present invention;

[0026] Figure 4 This is a schematic diagram of the meshing structure of the driving pinion and driven large gear ring of the present invention;

[0027] Figure 5 This is a schematic diagram of the side cross-section of the cover plate of the present invention;

[0028] Figure 6 This is a schematic diagram of the connection structure between the threaded sleeve and the threaded telescopic rod of the present invention;

[0029] Figure 7 This is a schematic diagram of a partial side section of the intake pipe of the present invention;

[0030] Figure 8 This is a schematic diagram of the main cross-sectional structure of the support plate of the present invention;

[0031] Figure 9 For the present invention Figure 6 Enlarged structural diagram at point A in the middle;

[0032] Figure 10 For the present invention Figure 6 Enlarged structural diagram at point B.

[0033] In the diagram: 1. Base; 2. Frame; 3. Detection cylinder; 4. Limit rod; 5. Cylinder; 6. Cover plate; 7. Inlet pipe; 8. Pressure sensor; 9. Lifting plate; 10. Driving pinion; 11. Clamping plate; 12. Driven large gear ring; 13. Connecting plate; 14. Motor; 15. Telescopic threaded rod; 1601. Drive outer ring; 1602. Threaded sleeve plate; 1603. Pressing inner ring; 1604. Sealing pressing head; 1605. Sealing rubber sleeve; 1606. 1607. Movable plate; 1608. Guide block; 1609. Connecting block; 1610. First spring; 1611. Adjusting block; 1612. Telescopic cylinder; 1613. Buffer spring; 1701. Exhaust pipe; 1702. Electromagnetic pressure relief valve; 1703. Support plate; 1704. Slider; 1705. Fixed contact switch; 1706. Mounting plate; 1707. Wedge block; 1708. Second spring; 1709. Third spring; 1710. Movable contact switch. Detailed Implementation

[0034] To further illustrate the technical means and effects adopted by the present invention in order to achieve the intended purpose, the following detailed description is provided in conjunction with the accompanying drawings and preferred embodiments, based on the specific implementation methods, structures, features and effects of the present invention.

[0035] Please see Figure 1 - Figure 10 This invention provides a technical solution: a sealing performance testing device for processing regenerated antibacterial medical bottles, comprising a base 1, a frame 2 and a testing cylinder 3 respectively fixed on the upper surface of the base 1, a cylinder 5 installed on the top of the frame 2, a cover plate 6 connected to the inner side of the frame 2, an air inlet pipe 7 penetrating through the inside of the cover plate 6, the air inlet end of the air inlet pipe 7 being connected to an external air supply source through a hose, and a pressure sensor 8 installed inside the air outlet end of the air inlet pipe 7; it also includes limiting rods 4, four limiting rods 4 fixed at equal angles about the center of the testing cylinder 3 on the upper surface of the base 1, and a lifting plate 9 slidably connected to the outer side of the four limiting rods 4, the top of the cover plate 6 being fixedly connected to the lower surface of the lifting plate 9, and the telescopic end of the cylinder 5 being connected to the upper surface of the lifting plate 9 through... The base 1 is bolted and connected to a telescopic threaded rod 15 on the left bearing of the upper surface of the base 1. A drive pinion 10 is fixedly sleeved at the lower end of the telescopic threaded rod 15. A motor 14 is installed on the left side inside the base 1. The output end of the motor 14 is fixedly connected to the bottom of the drive pinion 10. A driven large gear ring 12 is rotatably connected to the bottom of the inner wall of the detection cylinder 3. Clamping plates 11 are set at equal angles on the inner side of the driven large gear ring 12 on the inner wall of the detection cylinder 3. The drive pinion 10 and the driven large gear ring 12 are meshed. The bottom of the six clamping plates 11 is slidably connected to the inner wall of the detection cylinder 3. Rubber pads are set on the inner side of the clamping plates 11. The outer side of the six clamping plates 11 is hinged to the inner side of the driven large gear ring 12 through a connecting plate 13.

[0036] In one embodiment of the present invention, the operator first places the regenerated antibacterial medicine bottle to be tested into the testing cylinder 3. Then, the operator operates the control panel and starts the motor 14. The motor 14 drives the telescopic threaded rod 15 to rotate, which in turn drives the active pinion 10 to rotate synchronously. The active pinion 10 meshes with and drives the driven large gear ring 12 to rotate. During the rotation of the driven large gear ring 12, the multiple sets of connecting plates 13 connected to its inner side gradually deflect from the initial inclined posture to the vertical state, and simultaneously push each clamping plate 11 to move inward towards each other. (Because the clamping plate 11 is integrally provided with a T-shaped limiting block at the bottom, and the bottom of the inner wall of the testing cylinder 3 is correspondingly arranged with a T-shaped limiting groove that matches the T-shaped limiting block, it can effectively limit the clamping plate 11 to only move along the T-shaped limiting block.) The positioning groove slides radially in a straight line to avoid offset, skewing, and jamming of the clamping plate 11, ensuring smooth retraction and opening of the clamping plate 11. This enables adaptive clamping and fixing of medical bottles with different outer diameters. After the bottle body is clamped and positioned, the cylinder 5 drives the lifting plate 9 to descend, causing the cover plate 6 and the detection cylinder 3 to close together. At this time, the sealing pressure head 1604 presses and seals the bottle mouth end face from top to bottom, while the sealing sleeve 1605 fits and covers the outside of the bottle mouth to form a circumferential secondary seal, achieving a double seal of the bottle mouth. The sealing pressure head 1604 mainly undertakes the axial pressing and sealing function to prevent gas leakage from the top end face of the bottle mouth; the sealing sleeve 1605 provides a full circumferential flexible covering to fill the gap between the outside of the bottle mouth and the sealing structure. The small gap further enhances the sealing effect, preventing gas leakage from the side of the bottle opening. The double-sealing structure ensures that the bottle body and the gas path form a completely sealed space, laying the foundation for subsequent positive pressure holding tests and effectively avoiding testing errors caused by poor sealing. After confirming that the double seal is in place, the external clean gas supply is activated, outputting clean gas at a preset pressure (suitable for testing medical bottles, avoiding damage to the bottle body due to high pressure). The gas is delivered through the pipeline to the inlet pipe 7, and is uniformly delivered along the internal air passage of the inlet pipe 7, and precisely injected into the double-sealed bottle body. At this time, the inlet pipe 7 and the inside of the bottle body form a closed gas path. During the continuous injection of gas, the gas pressure inside the bottle body gradually increases until it reaches the preset testing pressure value (this pressure value is based on the medical bottle body pressure). The bottle's specifications and materials are preset to balance detection sensitivity and bottle pressure resistance, preventing plastic deformation or breakage. When the internal pressure of the bottle reaches the preset detection pressure, the external air supply stops, and the main air inlet valve on the air inlet pipe 7 closes, entering the pressure holding stage. During this stage, the pressure sensor 8, integrated into the end of the main passage pipe, enters a high-frequency continuous sampling mode to collect the internal pressure data of the bottle in real time. Based on the preset pressure decay threshold (this threshold is set according to the sealing standard of medical bottles and can be adaptively adjusted for different bottle sizes), the pressure decay amount ΔP is judged. If the pressure decay amount ΔP is always less than the preset threshold during the pressure holding period, it indicates that the bottle has good sealing performance and no leakage, and is judged as a qualified product.If the pressure drop ΔP exceeds the preset threshold, it indicates a sealing defect in the bottle (such as a loose bottle opening or bottle damage), resulting in gas leakage. This product is deemed unqualified. At this point, a subsequent water inspection and verification process can be triggered to further confirm the leak location. Finally, after the inspection is completed, the telescopic threaded rod 15 is driven to rotate in the opposite direction by motor 14. This causes the driven large gear ring 12 to rotate in the opposite direction, simultaneously moving multiple clamping plates 11 outwards, thus ceasing to clamp and fix the medical bottle. Then, cylinder 5 drives the cover plate 6 to reset upwards and separate it from the inspection cylinder 3. The inspected medical bottle can then be removed by the staff.

[0037] The cover plate 6 is internally equipped with a clamping force adjustment assembly, which includes a drive outer ring 1601. The drive outer ring 1601 is slidably disposed inside the cover plate 6, and a clamping inner ring 1603 is fixedly installed on the inner side of the drive outer ring 1601 by multiple crossbars. A threaded sleeve 1602 is bolted to the left side of the drive outer ring 1601. A sealing clamping head 1604 is disposed inside the cover plate 6 below the clamping inner ring 1603. A telescopic cylinder 1611 is fixedly connected at an equal angle between the top of the sealing clamping head 1604 and the bottom of the clamping inner ring 1603. A buffer spring 1612 is installed at the bottom of the inner wall of the telescopic cylinder 1611, and an adjusting block 1610 is slidably connected inside the telescopic cylinder 1611 above the buffer spring 1612. The threaded sleeve 1602 is threadedly connected to the outside of the telescopic threaded rod 15. The sealing clamping head 1604 is slidably connected inside the cover plate 6. The bottom of 1604 is recessed. The top of the adjusting block 1610 extends out of the outer surface of the telescopic cylinder 1611. The top of the adjusting block 1610 is fixedly connected to the bottom of the inner pressing ring 1603 by bolts. The bottom of the adjusting block 1610 is fixedly connected to the top of the buffer spring 1612. A sealing sleeve 1605 is provided inside the cover plate 6 below the sealing pressing head 1604. Movable plates 1606 are connected at equal angles to the center of the sealing sleeve 1605 inside the cover plate 6. Guide blocks 1607 are fixedly connected to the outer sides of the six movable plates 1606. Connecting blocks 1608 are bolted at equal angles to the bottom of the driving outer ring 1601. The side of the guide block 1607 away from the movable plate 1606 is slidably connected to the inner wall of the cover plate 6 through a protrusion. A first spring 1609 is installed between the end of the protrusion and the inner wall of the cover plate 6. The positions of the connecting block 1608 and the guide block 1607 correspond one-to-one.

[0038] In one embodiment of the present invention, the rotation of the telescopic threaded rod 15 drives the threaded sleeve 1602 to move the outer driving ring 1601 and the inner pressing ring 1603 downwards synchronously. When the inner pressing ring 1603 presses down, it simultaneously drives multiple sets of adjusting blocks 1610 downwards. The adjusting blocks 1610 adaptively compress or stretch the buffer spring 1612 according to the difference in the outer diameter of the bottle opening, thereby adaptively matching the pressing requirements of different specifications of medical bottles, achieving constant force flexible sealing pressing. This prevents damage to the bottle body due to excessive pressure, and also prevents poor sealing due to insufficient pressure. Simultaneously, the outer driving ring 1601 moves downwards synchronously, driving multiple sets of connecting blocks 1608 downwards. The connecting blocks 1608 compress various... The inclined working surface of the guide block 1607 causes multiple sets of guide blocks 1607 to slide inward synchronously along the radial direction, thereby driving the sealing sleeve 1605 to fit inward and tightly cover the outside of the bottle mouth of different specifications of medical bottles, forming a circumferential flexible seal, effectively avoiding gas leakage, thus laying a solid sealing foundation for subsequent gas injection and pressure testing, ensuring the accuracy of subsequent gas filling tests and pressure monitoring, while avoiding test errors caused by improper sealing, ensuring the rigor and reliability of the entire testing process, and the first spring 1609 can drive the guide block 1607 to reset, so that the sealing sleeve 1605 is no longer tightly attached to the outside of the bottle mouth, making it convenient to remove the tested medical bottle later.

[0039] An air venting assembly is provided on the right side inside the cover plate 6. The air venting assembly includes an exhaust pipe 1701, which is fixedly installed on the side of the intake pipe 7. An electromagnetic pressure relief valve 1702 is installed inside the exhaust pipe 1701. A support plate 1703 and a mounting plate 1706 are respectively connected to the upper and lower sides of the right side inside the cover plate 6. A slider 1704 is slidably connected to the lower surface of the support plate 1703, and a second spring 1708 is installed between the right side of the slider 1704 and the inner wall of the support plate 1703. A movable contact switch 1710 is slidably connected to the right side of the upper surface of the mounting plate 1706, and the bottom of the movable contact switch 1710 is connected to the mounting plate. A third spring 1709 is installed inside 1706. Fixed contact switches 1705 are installed between the upper surface of the movable contact switch 1710 and the bottom of the slider 1704. Wedge blocks 1707 are bolted between the left side of the upper surface of the mounting plate 1706 and the left side of the slider 1704. The exhaust pipe 1701 is connected to the internal air passage of the intake pipe 7. The top of the support plate 1703 is fixedly installed on the outer surface of the crossbar by bolts. The left side of the movable contact switch 1710 is fixedly connected to the outer surface of the telescopic cylinder 1611. The electromagnetic pressure relief valve 1702 is electrically connected to the fixed contact switch 1705 and the movable contact switch 1710 respectively.

[0040] In one embodiment of the present invention, when the sealing head 1604 moves downward and presses the top of the bottle neck to seal, the telescopic cylinder 1611 at the top of the sealing head 1604 is subjected to vertical compression and undergoes contraction deformation, which drives the mounting plate 1706 to move upward. This causes the movable contact switch 1710 on the mounting plate 1706 and the fixed contact switch 1705 on the support plate 1703 to come into contact with each other, energizing both contact switches and triggering the electromagnetic pressure relief valve 1702 to open. This allows the residual gas and pressure trapped inside the intake pipe 7 to be discharged outward through the exhaust pipe 1701, completing the pre-emptive purging of the gas path. After the residual gas in the pipeline is purged, the sealing head 1604 continues to move downward, and the mounting plate 1706 moves downward synchronously. The third spring 1709 is displaced and compressed; at the same time, the wedge block 1707 on the mounting plate 1706 and the wedge block 1707 at the corresponding position of the slider 1704 press against each other, and the slider 1704 is driven by the inclined plane transmission to slide horizontally, so that the two sets of contact switches that are in contact with each other gradually separate and disconnect, the circuit is de-energized, the electromagnetic pressure relief valve 1702 loses power drive and automatically resets and closes, the gas circuit is restored to a sealed state, and it is ready for subsequent inflation and pressure holding tests. In addition, the fixed contact switch 1705 can flexibly adjust its initial height according to different specifications of medical bottles, so as to ensure that the contact can be accurately contacted and separated regardless of the bottle size, ensuring the stability of gas circuit pre-emption and sealing, and further improving the accuracy of the test.

[0041] A method for testing the sealing performance of regenerated antibacterial medical bottles based on the above-mentioned device includes the following steps:

[0042] S1: The motor 14 on the base 1 drives the telescopic threaded rod 15 to rotate, which drives the active pinion 10 to mesh with the driven large gear ring 12 to rotate. Through the connecting plate 13, the clamping plate 11 is pushed to retract towards each other, adaptively clamping bottles of different specifications; the cylinder 5 drives the lifting plate 9 to descend, so that the cover plate 6 and the detection cylinder 3 are molded together, completing the bottle positioning and sealing preparation.

[0043] S2: The telescopic threaded rod 15 drives the threaded sleeve 1602, the outer ring 1601 and the inner pressing ring 1603 to move downwards, and the adjusting block 1610 compresses or stretches the buffer spring 1612 to achieve constant force pressing of the sealing pressing head 1604; the connecting block 1608 squeezes the guide block 1607, which drives the sealing rubber sleeve 1605 to cover the bottle mouth to form a double seal.

[0044] S3: The sealing clamping head 1604 moves down to retract the telescopic cylinder 1611, and the mounting plate 1706 moves up to make the movable contact switch 1710 contact the fixed contact switch 1705, triggering the electromagnetic pressure relief valve 1702 to vent the residual air in the air inlet pipe 7; after moving down further, the contacts separate, the pressure relief valve closes, the air circuit is sealed, and the inflation and pressure holding test is ready.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A sealing performance testing device for processing regenerated antibacterial medical bottles, comprising a base (1), wherein a frame (2) and a testing cylinder (3) are fixed on the upper surface of the base (1), and a cylinder (5) is installed on the top of the frame (2), and a cover plate (6) is connected to the inner side of the frame (2), an air inlet pipe (7) is provided through the inside of the cover plate (6), and the air inlet end of the air inlet pipe (7) is connected to an external air supply source through a hose, and a pressure sensor (8) is installed inside the air outlet end of the air inlet pipe (7); Its features are: It also includes limit rods (4), four limit rods (4) are fixed at equal angles to the center of the detection cylinder (3) on the upper surface of the base (1), and lifting plates (9) are slidably connected to the outer side of the four limit rods (4). A telescopic threaded rod (15) is connected to the left bearing of the upper surface of the base (1), and a drive pinion (10) is fixedly fitted at the lower end of the telescopic threaded rod (15). A motor (14) is installed on the left side inside the base (1), and the output end of the motor (14) is fixedly connected to the bottom of the drive pinion (10). A driven large gear ring (12) is rotatably connected to the bottom of the inner wall of the detection cylinder (3), and a clamping plate (11) is set at equal angles to the inner side of the driven large gear ring (12) on the inner wall of the detection cylinder (3). A pressure adjustment component is set inside the cover plate (6), and an air venting component is set on the right side inside the cover plate (6).

2. The sealing performance testing device for processing regenerated antibacterial medical bottles according to claim 1, characterized in that: The top of the cover plate (6) is fixedly connected to the lower surface of the lifting plate (9), and the telescopic end of the cylinder (5) is fixedly connected to the upper surface of the lifting plate (9) by bolts.

3. The sealing performance testing device for processing regenerated antibacterial medical bottles according to claim 1, characterized in that: The driving pinion (10) and the driven large gear ring (12) are meshed together. The bottom of the six clamping plates (11) and the inner wall of the detection cylinder (3) are slidably connected. The inner side of the clamping plates (11) is provided with a rubber pad. The outer side of the six clamping plates (11) and the inner side of the driven large gear ring (12) are hinged together by a connecting plate (13).

4. The sealing performance testing device for processing regenerated antibacterial medical bottles according to claim 1, characterized in that: The clamping force adjustment assembly includes a drive outer ring (1601), which is slidably disposed inside the cover plate (6). A clamping inner ring (1603) is fixedly installed on the inner side of the drive outer ring (1601) by multiple crossbars. A threaded sleeve plate (1602) is bolted to the left side of the drive outer ring (1601). A sealing clamping head (1604) is disposed inside the cover plate (6) below the clamping inner ring (1603). A telescopic cylinder (1611) is fixedly connected at an equal angle between the top of the sealing clamping head (1604) and the bottom of the clamping inner ring (1603). A buffer spring (1612) is installed at the bottom of the inner wall of the telescopic cylinder (1611). An adjusting block (1610) is slidably connected inside the telescopic cylinder (1611) above the buffer spring (1612).

5. The sealing performance testing device for processing regenerated antibacterial medical bottles according to claim 4, characterized in that: The threaded sleeve (1602) is threadedly connected to the outside of the telescopic threaded rod (15). The sealing pressure head (1604) is slidably connected to the inside of the cover plate (6), and the bottom of the sealing pressure head (1604) is set with an inward concave structure. The top of the adjusting block (1610) extends out of the outer surface of the telescopic cylinder (1611), and the top of the adjusting block (1610) is fixedly connected to the bottom of the inner pressing ring (1603) by bolts. The bottom of the adjusting block (1610) is fixedly connected to the top of the buffer spring (1612).

6. The sealing performance testing device for processing regenerated antibacterial medical bottles according to claim 4, characterized in that: The cover plate (6) is provided with a sealing sleeve (1605) located below the sealing pressure head (1604) inside, and movable plates (1606) are connected at equal angles to the center of the sealing sleeve (1605) inside the cover plate (6). Guide blocks (1607) are fixedly connected to the outer sides of the six movable plates (1606), and connecting blocks (1608) are bolted at equal angles to the bottom of the drive outer ring (1601).

7. The sealing performance testing device for processing regenerated antibacterial medical bottles according to claim 6, characterized in that: The guide block (1607) is slidably connected to the inner wall of the cover plate (6) on the side away from the movable plate (1606) through a protrusion, and a first spring (1609) is installed between the end of the protrusion and the inner wall of the cover plate (6). The positions of the connecting block (1608) and the guide block (1607) correspond one-to-one.

8. The sealing performance testing device for processing regenerated antibacterial medical bottles according to claim 1, characterized in that: The air venting assembly includes an exhaust pipe (1701), which is fixedly installed on the side of the intake pipe (7). An electromagnetic pressure relief valve (1702) is installed inside the exhaust pipe (1701). A support plate (1703) and a mounting plate (1706) are respectively connected to the upper and lower sides of the right side of the cover plate (6). A slider (1704) is slidably connected to the lower surface of the support plate (1703), and a second spring (1704) is installed between the right side of the slider (1704) and the inner wall of the support plate (1703). 708), a movable contact switch (1710) is slidably connected to the right side of the upper surface of the mounting plate (1706), and a third spring (1709) is installed between the bottom of the movable contact switch (1710) and the interior of the mounting plate (1706). Fixed contact switches (1705) are installed between the upper surface of the movable contact switch (1710) and the bottom of the slider (1704). Wedge blocks (1707) are bolted between the left side of the upper surface of the mounting plate (1706) and the left side of the slider (1704).

9. The sealing performance testing device for processing regenerated antibacterial medical bottles according to claim 8, characterized in that: The exhaust pipe (1701) is connected to the internal air passage of the intake pipe (7). The top of the support plate (1703) is fixedly installed on the outer surface of the crossbar by bolts. The left side of the movable contact switch (1710) is fixedly connected to the outer surface of the telescopic cylinder (1611). The electromagnetic pressure relief valve (1702) is electrically connected to the fixed contact switch (1705) and the movable contact switch (1710) respectively.

10. A method for using a sealing performance testing device for processing regenerated antibacterial medical bottles, characterized in that: Includes the following steps: S1: The motor (14) on the base (1) drives the telescopic threaded rod (15) to rotate, which drives the active pinion (10) to mesh with the driven large gear ring (12) to rotate. Through the connecting plate (13), the clamping plate (11) is pushed to close in opposite directions, adaptively clamping bottles of different specifications; the cylinder (5) drives the lifting plate (9) to move down, so that the cover plate (6) and the detection cylinder (3) are closed, completing the positioning and sealing preparation of the bottle; S2: The telescopic threaded rod (15) drives the threaded sleeve plate (1602), the outer ring (1601) and the inner pressing ring (1603) to move down, and the adjusting block (1610) compresses or stretches the buffer spring (1612) to achieve constant force pressing of the sealing pressing head (1604); the connecting block (1608) squeezes the guide block (1607) and drives the sealing sleeve (1605) to cover the bottle mouth to form a double seal; S3: The sealing clamping head (1604) moves down to retract the telescopic cylinder (1611), and the mounting plate (1706) moves up to make the movable contact switch (1710) contact the fixed contact switch (1705), triggering the electromagnetic pressure relief valve (1702) to vent the residual air in the air inlet pipe (7); after continuing to move down, the contacts separate, the pressure relief valve closes, the air path is sealed, and the inflation and pressure holding test is ready.

Images