Device for detecting air tightness of conical joint of syringe needle cylinder

Abstract

The invention discloses a syringe needle cylinder conical joint air tightness detection device, and relates to the technical field of air tightness detection.The detection device performs air tightness detection on a conical joint, the detection device comprises a main body mechanism, an air tightness detection mechanism, a screening mechanism and a clamping mechanism, the main body mechanism is connected with the air tightness detection mechanism, the main body mechanism is connected with the screening mechanism, and the clamping mechanism is connected with the air tightness detection mechanism. The main body mechanism is connected with the clamping mechanism, the air tightness detection mechanism is connected with the screening mechanism, the air tightness detection mechanism is connected with the clamping mechanism, the air tightness detection mechanism comprises an air compressor and a ventilation pipeline, the air compressor is fixedly connected with the mounting plate, and the end, away from the air compressor, of the ventilation pipeline is slidably connected with the inner wall of the conical joint interface.

Description

Technical Field

[0001] The invention relates to the technical field of air tightness detection, in particular to an air tightness detection device for a syringe barrel cone joint. Background Art

[0002] As an important component of syringes, conical joints are widely used in various medical devices and instruments, such as infusion sets, blood transfusion sets, anesthesia breathing equipment, etc. The stability and reliability of the performance of conical joints are directly related to the overall performance of medical equipment and the safety of patients.

[0003] In the production process of syringe barrel conical joints, conical joints are usually made by injection molding. During the injection molding process, some external factors may cause uneven injection at the joint mouth, resulting in air leakage. At the connection between the joint and the needle, improper installation may also cause air leakage. The air tightness test is to ensure that the conical joint will not cause leakage or contamination of the drug solution due to gas leakage during use. Otherwise, it will not only affect the treatment effect, but may also cause medical accidents. Summary of the invention

[0004] The purpose of the present invention is to provide a syringe barrel conical joint air tightness detection device to solve the problems raised in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The testing equipment performs air tightness testing on the conical joint. The testing equipment includes a main body mechanism, an air tightness testing mechanism, a screening mechanism, and a clamping mechanism. The main body mechanism is connected to the air tightness testing mechanism, the main body mechanism is connected to the screening mechanism, the main body mechanism is connected to the clamping mechanism, the air tightness testing mechanism is connected to the screening mechanism, and the air tightness testing mechanism is connected to the clamping mechanism.

[0007] In the detection equipment, the device is used to perform air tightness detection on the conical joint. The main body mechanism provides a detection basis to facilitate the installation and fixation of the conical joint and other mechanisms. The air tightness detection mechanism is used to detect the air tightness of the two parts of the conical joint to detect whether it will cause leakage. The screening mechanism is used to collect different conical joints. The clamping mechanism is used to clamp and fix the conical joint to prevent movement during leakage detection and affect the detection results.

[0008] Furthermore, the main mechanism includes a mounting plate, two fixed rotating grooves are symmetrically provided on the mounting plate, two rectangular mounting grooves are symmetrically provided on the mounting plate, a motor mounting groove is provided on the mounting plate, two vibration mounting grooves are provided on the mounting plate, the mounting plate is connected to the airtight detection mechanism, the rectangular mounting groove is connected to the airtight detection mechanism, the motor mounting groove is connected to the airtight detection mechanism, the mounting plate is connected to the screening mechanism, the vibration mounting groove is connected to the screening mechanism, the mounting plate is connected to the clamping mechanism, and the fixed rotating groove is connected to the clamping mechanism.

[0009] In the main body, the mechanism is used to provide a detection platform for the detection device. A conical joint and various mechanisms for detecting the conical joint are installed on the mounting plate. Various slots are also installed on the mounting plate for installing various detection mechanisms.

[0010] Furthermore, the airtight detection mechanism includes an air compressor and a ventilation pipe, the air compressor and the mounting plate are tightly connected, the air compressor output end and the ventilation pipe are tightly connected, and the end of the ventilation pipe away from the air compressor is slidably connected to the inner wall of the conical joint interface.

[0011] In the air tightness detection mechanism, air compressors and ventilation pipes are indispensable. They provide the source of input air for the air tightness detection of the tapered joint. The air in the air compressor is transmitted to the tapered joint through the ventilation pipe.

[0012] Furthermore, the airtight detection mechanism also includes a joint port detection device, which is connected to the mounting plate, the joint port detection device is connected to the rectangular mounting groove, the joint port detection device is connected to the motor mounting groove, the joint port detection device includes a closed ring plug, a movable clamping ring, a movable bracket and a driving hydraulic cylinder, two driving hydraulic cylinders are provided, the two driving hydraulic cylinders are respectively placed in two rectangular mounting grooves, the fixed end of the driving hydraulic cylinder is tightly connected to the inner wall of the rectangular mounting groove, the output end of the driving hydraulic cylinder is tightly connected to the movable bracket, the bottom of the movable bracket is slidingly connected to the rectangular mounting groove, the movable bracket is an inverted "L" shape, the other end of the mobile bracket is tightly connected to the mobile clamping ring, the mobile clamping ring is a ring with an angle less than 180°, the side of the mobile clamping ring close to the center line of the mounting plate is tightly connected to the closed ring plug, the closed ring plug is made of flexible material, the closed ring plug is a ring with an angle of 180°, the closed ring plug, the movable clamping ring, the movable bracket and the driving hydraulic cylinder are all placed at the junction of the conical joint needle tube and the plastic joint.

[0013] In the airtight detection mechanism, the joint port detection device is used to detect the end of the conical joint with a larger diameter, that is, the joint port that is slidably connected to the syringe during use. The closed ring plug, movable clamp ring, movable bracket and driving hydraulic cylinder are all placed at the junction of the conical joint needle tube and the plastic joint. The purpose is to block and seal the junction of the conical joint needle tube and the plastic joint to prevent air leakage. By controlling the junction to prevent air leakage, the variables are controlled to facilitate the detection of whether the joint port is leaking. Two movable clamp rings are provided, and the angle of the movable clamp ring is less than 180°. Two closed ring plugs are provided and the angle is 180°. The closed ring plug and the movable clamp ring are tightly connected. In the process of the two movable clamp rings gradually approaching each other, the two closed ring plugs will gradually approach each other to seal the junction of the conical joint needle tube and the plastic joint. The driving hydraulic cylinder is used as the power source, and the movable bracket is used as the driving hydraulic cylinder. The frame supports the closed ring plug and the movable clamp ring. When the joint port is detected, the driving hydraulic cylinder is started to push and drive the movable bracket fastened to the hydraulic cylinder to move toward the direction of the conical joint. The closed ring plug and the movable clamp ring are fixedly connected to the movable bracket, and the closed ring plug and the movable clamp ring are moved together toward the conical joint. In the process of movement, the two closed ring plugs are constantly approaching each other, and the closed ring plugs are made of flexible material, which will undergo elastic deformation after contact with harder materials, so that the closed ring plug and the conical joint can be tightly attached. At the same time, the movable clamp ring is a ring less than 180°, so after the two closed ring plugs are in contact, the movable clamp ring can continue to approach the conical joint. At this time, the two closed ring plugs are in contact and squeezed, so that the conical joint at the junction of the two closed ring plugs can be closed, and the air tightness of the conical joint port can be detected at this time.

[0014] Furthermore, the joint port detection device also includes a syringe plug, a support rod and a driving motor. The driving motor is fastened to the bottom of the motor mounting groove, the output end of the driving motor is fastened to the support rod, the syringe plug is fastened to an end of the support rod away from the driving motor, the air compressor is placed on one end of the mounting plate close to the driving hydraulic cylinder, and one end of the ventilation pipe is fastened to the air outlet of the air compressor.

[0015] In the joint port detection device, there are also devices for air tightness detection and devices for blocking the needle tube port. The driving motor is fixedly installed in the motor mounting groove, and its position is placed in front of the needle tube of the conical joint. The output end of the driving motor faces the conical joint. The driving motor is fixedly connected to a support rod, and a needle tube plug is tightly connected to the other end of the support rod. The needle tube plug is fixedly connected to the side of the support rod close to the conical joint. After the driving motor is started, the driving motor rotates with the support rod until the support rod and the bottom surface of the mounting plate are perpendicular. At this time, the needle tube plug on the support rod is just stuck on the needle tube of the conical joint. At this time, the tail of the needle tube of the conical joint is closed, and only the joint port with a larger diameter of the entire conical joint is open. The air compressor is connected to the conical joint through a ventilation pipe. After the device is started, the air compressor slowly delivers gas to the inside of the conical joint. After delivering to the capacity of a conical joint, no more gas can be introduced, which proves that the joint port of the conical joint is airtight and will not leak. , subsequent operations can be carried out. If gas can continue to be introduced after being delivered to the capacity of a conical joint, it proves that the joint port of the conical joint is not airtight and will leak. After the inspection, the drive motor is started again, so that the support rod carries the syringe plug away from the needle tube of the conical joint, and the conical joint with leakage at the joint port is removed and replaced with a new one for re-inspection. For the airtight ones, the next step of inspection is carried out, and the hydraulic cylinder is driven to drive the mobile bracket away from the conical joint. The air compressor inputs a large amount of gas, and for each conical joint, the same amount of gas is input, so that the conical joint is ejected forward under the action of the gas, and the conical joint is screened by acceleration. If the junction between the needle tube and the plastic joint of the conical joint is airtight, the conical joint can be ejected a longer distance. If it is not airtight, the gas will escape from here after entering the inside of the conical joint because the junction between the needle tube and the plastic joint is not airtight, so the ejection distance will be shorter.

[0016] Furthermore, the screening mechanism comprises a long sorting plate, which is placed on the mounting plate and in the direction of the needle of the conical joint, and a sorting cavity is arranged in the long sorting plate.

[0017] In the screening mechanism, the long sorting disk is used to screen the closed and unclosed conical joints. The conical joints are ejected forward under the action of the air compressor, and the long sorting disk is on the ejection path of the conical joints. Therefore, the conical joints will eventually fall into the long sorting disk. If it falls on the conical joint closer to the air compressor, it proves that its air tightness is not very good, otherwise it is good.

[0018] Furthermore, the screening mechanism also includes a vibration device, which is connected to a vibration mounting groove, connected to a long sorting disk, and connected to a sorting chamber. The vibration device includes a vibrator, an anti-drop baffle and a sponge bottom pad. Two vibrators are provided, and the two vibrators are respectively placed in two vibration mounting grooves. The output ends of the two vibrators are respectively fastened to the two ends of the bottom of the long sorting disk, the anti-drop baffle is fastened to the long sorting disk, the sponge bottom pad is placed in the long sorting disk, the sponge bottom pad is fastened to the inner wall of the sorting chamber, and the sponge bottom pad is provided with a plurality of strip folds.

[0019] In the screening mechanism, the vibration device is used to buffer the force when the conical joint falls. When the conical joint has not been ejected, the vibration device is started, the vibrator is started, and its output end is tightly connected to the bottom of the long sorting disk. Therefore, the long sorting disk will be slightly vibrated. The long sorting disk is also surrounded by an anti-drop baffle to prevent the conical joint from falling due to vibration in the long sorting disk. The sponge bottom pad is placed on the inner wall of the sorting cavity, which can greatly buffer the conical joint after it falls in, and the sponge bottom pad is provided with a number of strip folds. During the operation of the vibrator, the conical joint can be placed on the folds as much as possible, so that it can be arranged more neatly to facilitate subsequent collection.

[0020] Furthermore, the clamping mechanism includes a return spring, a rotating baffle, a baffle rotating rod and a fixed side baffle. Two return springs are provided, two rotating baffles are provided, two baffle rotating rods are provided, and two fixed side baffles are provided. The two baffle rotating rods are rotatably connected to the two fixed rotating grooves respectively, and the two baffle rotating rods are fastened to the two rotating baffles respectively. The two fixed side baffles are symmetrically installed on both sides of the mounting plate, one end of the return spring is fastened to the fixed side baffle, and the end of the return spring away from the fixed side baffle is fastened to the rotating baffle.

[0021] In the clamping mechanism, the mechanism is used to clamp the conical joint under inspection, the baffle rotating rod and the fixed rotating groove are rotatably connected, the baffle rotating rod and the rotating baffle are tightly connected, the rotating baffle can rotate with the baffle rotating rod as the center of the circle, the fixed side baffle and the mounting plate are tightly connected, and the fixed side baffle and the rotating baffle are tightly connected by a reset spring. During the detection of the conical joint, the clamping mechanism clamps the conical joint and blocks the conical joint through two rotating baffles to prevent it from moving due to the input of gas during the detection process. At the same time, during screening, when the clamping mechanism is fixing it, the air compressor continuously inputs gas. After reaching a certain amount, the conical joint will break through the rotating baffle, and the rotating baffle rotates along the baffle rotating rod, while the fixed side baffle remains fixed. During the rotation of the rotating baffle, the reset spring is stretched. After the conical joint is separated from the clamping mechanism, the reset spring is reset, and the rotating baffle returns to the initial position to perform the next conical joint detection.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] After the device is started, first connect the conical joint and the ventilation pipe, place the conical joint behind the rotating baffle, then start the driving motor, drive the support rod to rotate 90°, the needle plug on the support rod just blocks the needle opening, making the needle opening airtight, drive the hydraulic cylinder to start, push the movable bracket toward the connection between the needle and the plastic joint, and through the contact and compression of the two closed ring plugs, the conical joint at the junction of the two closed ring plugs is sealed, and the air compressor slowly delivers gas to the inside of the conical joint. After delivering to the capacity of a conical joint, no more gas can be introduced, which proves that the joint port of the conical joint is closed and subsequent operations can be carried out. If it is delivered to If gas can continue to flow into a conical joint after it reaches its capacity, it proves that the joint port of the conical joint is not airtight. Replace a new conical joint for retesting, then reset the drive motor and the drive hydraulic cylinder, and the air compressor inputs the same amount of gas into each conical joint, so that the conical joint breaks through the clamping device and is ejected forward under the action of the gas. The conical joint is screened by acceleration. If the junction between the needle tube and the plastic joint of the conical joint is airtight, the conical joint can be ejected a longer distance. If it is not airtight, after the gas enters the inside of the conical joint, it will escape from the junction because the junction between the needle tube and the plastic joint is not airtight, and therefore will be ejected a shorter distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of a syringe barrel cone joint air tightness detection device of the present invention;

[0025] Figure 2 It is a transverse cross-sectional view of a syringe barrel cone joint air tightness detection device of the present invention;

[0026] Figure 3 A top view of a syringe barrel cone joint air tightness detection device according to the present invention;

[0027] Figure 4 The invention provides a syringe barrel cone joint air tightness detection device Figure 3 Enlarged view of part A;

[0028] Figure 5 It is a structural schematic diagram of a syringe barrel cone joint air tightness detection device of the present invention;

[0029] Figure 6 The invention provides a syringe barrel cone joint air tightness detection device Figure 5 Enlarged view of part B;

[0030] Figure 7 A longitudinal cross-sectional view of a syringe barrel conical joint air tightness detection device according to the present invention, with the center of the driving hydraulic cylinder as the tangent line;

[0031] Figure 8 The invention discloses a longitudinal cross-sectional view of a syringe barrel conical joint air tightness detection device with the baffle rotating rod center connecting line as the tangent line.

[0032] In the figure: 1. conical joint; 2. main body; 21. mounting plate; 211. fixed rotating groove; 212. rectangular mounting groove; 213. motor mounting groove; 214. vibration mounting groove; 3. airtight detection mechanism; 31. air compressor; 32. ventilation duct; 33. joint mouth detection device; 331. closed ring plug; 332. movable clamping ring; 333. movable bracket; 334. driving hydraulic cylinder; 335. needle plug; 336. support rod; 337. driving motor; 4. screening mechanism; 41. long sorting disc; 411. sorting chamber; 42. vibration device; 421. vibrator; 422. anti-drop baffle; 423. sponge bottom pad; 5. clamping mechanism; 51. reset spring; 52. rotating baffle; 53. baffle rotating rod; 54. fixed side baffle. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example: Figure 1-Figure 8 As shown, the present invention provides a technical solution for an airtightness detection device for a syringe barrel conical joint. The detection device performs an airtightness detection on a conical joint 1. The detection device comprises a main body mechanism 2, an airtightness detection mechanism 3, a screening mechanism 4, and a clamping mechanism 5. The main body mechanism 2 is connected to the airtightness detection mechanism 3, the main body mechanism 2 is connected to the screening mechanism 4, the main body mechanism 2 is connected to the clamping mechanism 5, the airtightness detection mechanism 3 is connected to the screening mechanism 4, and the airtightness detection mechanism 3 is connected to the clamping mechanism 5.

[0035] In the detection equipment, the device is used to perform air tightness detection on the conical joint 1. The main mechanism 2 provides a detection basis to facilitate the installation and fixation of the conical joint 1 and other mechanisms. The air tightness detection mechanism 3 is used to detect the air tightness of the two parts of the conical joint 1 to detect whether it will cause leakage. The screening mechanism 4 is used to collect different conical joints 1. The clamping mechanism 5 is used to clamp and fix the conical joint 1 to prevent movement during leakage detection and affect the detection result.

[0036] The main mechanism 2 includes a mounting plate 21, on which two fixed rotating grooves 211 are symmetrically provided, on which two rectangular mounting grooves 212 are symmetrically provided, on which a motor mounting groove 213 is provided, on which two vibration mounting grooves 214 are provided, the mounting plate 21 is connected to the airtight detection mechanism 3, the rectangular mounting groove 212 is connected to the airtight detection mechanism 3, the motor mounting groove 213 is connected to the airtight detection mechanism 3, the mounting plate 21 is connected to the screening mechanism 4, the vibration mounting groove 214 is connected to the screening mechanism 4, the mounting plate 21 is connected to the clamping mechanism 5, and the fixed rotating groove 211 is connected to the clamping mechanism 5.

[0037] In the main body 2, the mechanism is used to provide a detection platform for the detection device. The conical joint 1 and various mechanisms for detecting the conical joint 1 are installed on the mounting plate 21. Various grooves are also installed on the mounting plate 21 for installing various detection mechanisms.

[0038] The airtight detection mechanism 3 includes an air compressor 31 and a ventilation pipe 32. The air compressor 31 is firmly connected to the mounting plate 21, the output end of the air compressor 31 is firmly connected to the ventilation pipe 32, and the end of the ventilation pipe 32 away from the air compressor 31 is slidably connected to the inner wall of the interface of the conical joint 1.

[0039] In the airtight detection mechanism 3 , the air compressor 31 and the ventilation pipe 32 are indispensable, and they provide the source of input air for the airtight detection of the conical joint 1 . The air in the air compressor 31 is transmitted to the conical joint 1 through the ventilation pipe 32 .

[0040] The airtight detection mechanism 3 also includes a joint detection device 33, which is connected to the mounting plate 21, the joint detection device 33 is connected to the rectangular mounting groove 212, and the joint detection device 33 is connected to the motor mounting groove 213. The joint detection device 33 includes a closed ring plug 331, a movable clamp ring 332, a movable bracket 333 and a driving hydraulic cylinder 334. The driving hydraulic cylinder 334 is provided with two, and the two driving hydraulic cylinders 334 are respectively placed in the two rectangular mounting grooves 212. The fixed end of the driving hydraulic cylinder 334 is fastened to the inner wall of the rectangular mounting groove 212, and the output end of the driving hydraulic cylinder 334 is connected to the movable bracket 333. The movable bracket 333 is tightly connected, the bottom of the movable bracket 333 is slidingly connected to the rectangular mounting groove 212, the movable bracket 333 is an inverted "L" shape, the other end of the movable bracket 333 is tightly connected to the movable snap ring 332, the movable snap ring 332 is a ring with an angle less than 180°, the side of the movable snap ring 332 close to the center line of the mounting plate 21 is tightly connected to the closed ring plug 331, the closed ring plug 331 is made of flexible material, the closed ring plug 331 is a ring with an angle of 180°, the closed ring plug 331, the movable snap ring 332, the movable bracket 333 and the driving hydraulic cylinder 334 are all placed at the junction of the needle tube of the conical joint 1 and the plastic joint.

[0041] In the airtight detection mechanism 3, the joint port detection device 33 is used to detect the end of the conical joint 1 with a larger diameter, that is, the joint port that is slidably connected to the syringe during use. The closed ring plug 331, the movable clamp ring 332, the movable bracket 333 and the driving hydraulic cylinder 334 are all placed at the junction of the needle tube of the conical joint 1 and the plastic joint, with the purpose of blocking and sealing the junction between the needle tube of the conical joint 1 and the plastic joint to prevent air leakage. By controlling the junction to prevent air leakage, the variable is controlled to facilitate the detection of whether the joint port is leaking. There are two movable clamp rings 332, and the angle of the movable clamp ring 332 is less than 180°. There are two closed ring plugs 331 and the angle is 180°. The closed ring plugs 331 and the movable clamp ring 332 are tightly connected. In the process of the two movable clamp rings 332 gradually approaching each other, the two closed ring plugs 331 will gradually approach each other to seal the junction between the needle tube of the conical joint 1 and the plastic joint. The driving hydraulic cylinder 334 is used as a power source, and the movable bracket 333 is used to control the closed ring plug 3 31. The mobile clamp ring 332 is supported. When the joint port is detected, the driving hydraulic cylinder 334 is started to push the mobile bracket 333 connected to the driving hydraulic cylinder 334 to move toward the direction of the conical joint 1. The mobile bracket 333 is fixedly connected with the sealed ring plug 331 and the mobile clamp ring 332. The sealed ring plug 331 and the mobile clamp ring 332 are moved together toward the direction of the conical joint 1. During the movement, the two sealed ring plugs 331 are constantly approaching each other, and the sealed ring plugs 331 It is a flexible material and will undergo elastic deformation after contacting a harder material, so that the sealed ring plug 331 and the conical joint 1 can fit tightly together. At the same time, the movable retaining ring 332 is a ring less than 180°. Therefore, after the two sealed ring plugs 331 are in contact, the movable retaining ring 332 can continue to approach the conical joint 1. At this time, the two sealed ring plugs 331 are in contact and squeezed, so that the conical joint 1 at the junction of the two sealed ring plugs 331 can be sealed. At this time, the air tightness of the joint port of the conical joint 1 can be detected.

[0042] The joint detection device 33 also includes a syringe plug 335, a support rod 336 and a drive motor 337. The drive motor 337 is fastened to the bottom of the motor mounting groove 213, the output end of the drive motor 337 is fastened to the support rod 336, the syringe plug 335 is fastened to one end of the support rod 336 away from the drive motor 337, the air compressor 31 is placed on one end of the mounting plate 21 close to the drive hydraulic cylinder 334, and one end of the ventilation pipe 32 is fastened to the air outlet of the air compressor 31.

[0043] In the joint detection device 33, there are also a device for air tightness detection and a device for blocking the needle tube port. The drive motor 337 is fixedly installed in the motor installation groove 213, and its position is placed in front of the needle tube of the conical joint 1. The output end of the drive motor 337 faces the conical joint 1. The drive motor 337 is fixedly connected to the support rod 336. The other end of the support rod 336 is fastened with a needle tube plug 335. The needle tube plug 335 is fixedly connected to the side of the support rod 336 close to the conical joint 1. After the drive motor 337 is started, the drive motor The air compressor 337 rotates with the support rod 336 until the support rod 336 is perpendicular to the bottom surface of the mounting plate 21. At this time, the needle plug 335 on the support rod 336 is just stuck on the needle tube of the conical joint 1. At this time, the tail of the needle tube of the conical joint 1 is sealed, and only the joint opening with a larger diameter of the entire conical joint 1 is open. The air compressor 31 is connected to the conical joint 1 through the ventilation pipe 32. After the device is started, the air compressor 31 slowly delivers gas to the inside of the conical joint 1. After delivering gas to the capacity of a conical joint 1, no more gas can be introduced, which proves that It is clear that the joint port of the conical joint 1 is airtight and will not leak, and subsequent operations can be carried out. If gas can continue to be introduced after the capacity of a conical joint 1 is delivered, it is proved that the joint port of the conical joint 1 is not airtight and will leak. After the detection, the driving motor 337 is started again, so that the support rod 336 takes the needle plug 335 away from the needle tube of the conical joint 1, and the conical joint 1 with leakage at the joint port is removed and replaced with a new one for re-testing. For the airtight one, the next step of detection is carried out, and the hydraulic cylinder 334 is driven to drive the mobile support The frame 333 is far away from the conical joint 1, and the air compressor 31 inputs a large amount of gas, and the same amount of gas is input to each conical joint 1, so that the conical joint 1 is ejected forward under the action of the gas, and the conical joint 1 is screened by acceleration. If the junction between the needle tube and the plastic joint of the conical joint 1 is airtight, the conical joint 1 can be ejected for a longer distance. If it is not airtight, after the gas enters the inside of the conical joint 1, it will escape from here because the junction between the needle tube and the plastic joint is not airtight, so the ejection distance will be shorter.

[0044] The screening mechanism 4 comprises a long sorting disc 41 , which is placed on the mounting plate 21 and in the direction of the needle of the conical joint 1 . A sorting cavity 411 is provided in the long sorting disc 41 .

[0045] In the screening mechanism 4, the long sorting disk 41 is used to screen the sealed and unsealed conical joints 1. The conical joints 1 are ejected forward under the action of the air compressor 31. The long sorting disk 41 is on the ejection path of the conical joints 1. Therefore, the conical joints 1 will eventually fall into the long sorting disk 41. If the conical joint 1 falls on the conical joint 1 closer to the air compressor 31, it proves that its air tightness is not very good, otherwise, its air tightness is good.

[0046] The screening mechanism 4 also includes a vibration device 42, which is connected to the vibration mounting groove 214, the vibration device 42 is connected to the long sorting disk 41, and the vibration device 42 is connected to the sorting chamber 411. The vibration device 42 includes a vibrator 421, an anti-drop baffle 422 and a sponge bottom pad 423. Two vibrators 421 are provided, and the two vibrators 421 are respectively placed in the two vibration mounting grooves 214. The output ends of the two vibrators 421 are respectively fastened to the two ends of the bottom of the long sorting disk 41, the anti-drop baffle 422 is fastened to the long sorting disk 41, the sponge bottom pad 423 is placed in the long sorting disk 41, the sponge bottom pad 423 is fastened to the inner wall of the sorting chamber 411, and a plurality of strip folds are provided on the sponge bottom pad 423.

[0047] In the screening mechanism 4, the vibration device 42 is used to buffer the force when the conical joint 1 falls. When the conical joint 1 has not been ejected, the vibration device 42 is started, and the vibrator 421 is started. Its output end is tightly connected to the bottom of the long sorting disk 41, so the long sorting disk 41 will be slightly vibrated. The long sorting disk 41 is also surrounded by an anti-drop baffle 422 to prevent the conical joint 1 from falling in the long sorting disk 41 due to vibration. The sponge bottom pad 423 is placed on the inner wall of the sorting chamber 411, which can greatly buffer the conical joint 1 after it falls in, and the sponge bottom pad 423 is provided with a plurality of strip folds. During the operation of the vibrator 421, the conical joint 1 can be placed on the folds as much as possible, so that it can be arranged more neatly to facilitate subsequent collection.

[0048] The clamping mechanism 5 includes a return spring 51, a rotating baffle 52, a baffle rotating rod 53 and a fixed side baffle 54. There are two return springs 51, two rotating baffles 52, two baffle rotating rods 53, and two fixed side baffles 54. The two baffle rotating rods 53 are rotatably connected to the two fixed rotating grooves 211 respectively, and the two baffle rotating rods 53 are fastened to the two rotating baffles 52 respectively. The two fixed side baffles 54 are symmetrically installed on both sides of the mounting plate 21, one end of the return spring 51 is fastened to the fixed side baffle 54, and the end of the return spring 51 away from the fixed side baffle 54 is fastened to the rotating baffle 52.

[0049] In the clamping mechanism 5, the mechanism is used to clamp the conical joint 1 under inspection, the baffle rotating rod 53 is rotatably connected to the fixed rotating groove 211, the baffle rotating rod 53 is tightly connected to the rotating baffle 52, the rotating baffle 52 can rotate with the baffle rotating rod 53 as the center of the circle, the fixed side baffle 54 is tightly connected to the mounting plate 21, and the fixed side baffle 54 and the rotating baffle 52 are tightly connected by a reset spring 51. During the inspection of the conical joint 1, the clamping mechanism 5 clamps the conical joint 1, and the two rotating baffles 52 block the conical joint 1. At the same time, during screening, when the clamping mechanism 5 is fixed to it, the air compressor 31 continuously inputs gas. After reaching a certain amount, the conical joint 1 will break through the rotating baffle 52, and the rotating baffle 52 rotates along the baffle rotating rod 53, while the fixed side baffle 54 remains unchanged. During the rotation of the rotating baffle 52, the reset spring 51 is stretched. After the conical joint 1 is separated from the clamping mechanism 5, the reset spring 51 is reset, and the rotating baffle 52 returns to the initial position to carry out the next detection of the conical joint 1.

[0050] Working principle of the present invention: after the device is started, the conical joint 1 and the ventilation pipe 32 are connected first, and the conical joint 1 is placed behind the rotating baffle 53, and then the driving motor 337 is started, and the support rod 336 is driven to rotate 90 degrees, and the needle plug 335 on the support rod 336 just blocks the needle tube opening, so that the needle tube opening is sealed, and the driving hydraulic cylinder 334 is started, pushing the movable bracket 333 to move toward the connection between the needle tube and the plastic joint, and through the contact and compression of the two closed ring plugs 331, the conical joint 1 at the junction of the two closed ring plugs 331 is sealed, and the air compressor 31 slowly transports gas to the inside of the conical joint 1. After transporting to the capacity of a conical joint 1, no more gas can be introduced, which proves that the joint opening of the conical joint 1 is closed. For subsequent operations, if gas can continue to be introduced after being delivered to the capacity of a conical joint 1, it proves that the joint port of the conical joint 1 is not airtight. A new conical joint 1 is replaced for retesting, and then the drive motor 337 and the drive hydraulic cylinder 334 are reset. The air compressor 31 inputs the same amount of gas to each conical joint 1, so that the conical joint 1 breaks through the clamping device 5 under the action of the gas and is ejected forward. The conical joint 1 is screened by acceleration. If the junction between the needle tube and the plastic joint of the conical joint 1 is airtight, the conical joint 1 can be ejected a longer distance. If it is not airtight, after the gas enters the inside of the conical joint 1, it will escape from the junction because the junction between the needle tube and the plastic joint is not airtight, and therefore will be ejected a shorter distance.

[0051] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A syringe barrel conical joint air tightness detection device, the detection device performs air tightness detection on the conical joint (1), characterized in that: The detection device comprises a main body mechanism (2), an airtight detection mechanism (3), a screening mechanism (4), and a clamping mechanism (5); the main body mechanism (2) is connected to the airtight detection mechanism (3), the main body mechanism (2) is connected to the screening mechanism (4), the main body mechanism (2) is connected to the clamping mechanism (5), the airtight detection mechanism (3) is connected to the screening mechanism (4), and the airtight detection mechanism (3) is connected to the clamping mechanism (5).

2. The syringe barrel conical joint air tightness detection device according to claim 1, characterized in that: The main body mechanism (2) comprises a mounting plate (21), two fixed rotation grooves (211) are symmetrically provided on the mounting plate (21), two rectangular mounting grooves (212) are symmetrically provided on the mounting plate (21), a motor mounting groove (213) is provided on the mounting plate (21), and two vibration mounting grooves (214) are provided on the mounting plate (21); the mounting plate (21) is connected to an airtight detection mechanism (3), the rectangular mounting groove (212) is connected to the airtight detection mechanism (3), the motor mounting groove (213) is connected to the airtight detection mechanism (3), the mounting plate (21) is connected to a screening mechanism (4), the vibration mounting groove (214) is connected to the screening mechanism (4), the mounting plate (21) is connected to a clamping mechanism (5), and the fixed rotation groove (211) is connected to the clamping mechanism (5).

3. The air tightness detection device for the cone joint of a syringe barrel according to claim 2, characterized in that: The airtightness detection mechanism (3) comprises an air compressor (31) and a ventilation pipe (32); the air compressor (31) and the mounting plate (21) are tightly connected; the output end of the air compressor (31) and the ventilation pipe (32) are tightly connected; and one end of the ventilation pipe (32) away from the air compressor (31) is slidably connected to the inner wall of the interface of the conical joint (1).

4. The syringe barrel conical joint air tightness detection device according to claim 3, characterized in that: The airtight detection mechanism (3) further comprises a joint port detection device (33), the joint port detection device (33) being connected to the mounting plate (21), the joint port detection device (33) being connected to the rectangular mounting groove (212), the joint port detection device (33) being connected to the motor mounting groove (213), the joint port detection device (33) comprising a sealed ring plug (331), a movable snap ring (332), a movable bracket (333) and a driving hydraulic cylinder (334), two driving hydraulic cylinders (334) being provided, the two driving hydraulic cylinders (334) being respectively disposed in two rectangular mounting grooves (212), the fixed end of the driving hydraulic cylinder (334) being tightly connected to the inner wall of the rectangular mounting groove (212), and the output of the driving hydraulic cylinder (334) The end of the movable bracket (333) is tightly connected to the movable bracket (333), the bottom of the movable bracket (333) is slidably connected to the rectangular mounting groove (212), the movable bracket (333) is in an inverted "L" shape, the other end of the movable bracket (333) is tightly connected to the movable snap ring (332), the movable snap ring (332) is a ring with an angle less than 180 degrees, the side of the movable snap ring (332) close to the center line of the mounting plate (21) is tightly connected to the closed ring plug (331), the closed ring plug (331) is made of a flexible material, the closed ring plug (331) is a ring with an angle of 180 degrees, and the closed ring plug (331), the movable snap ring (332), the movable bracket (333) and the driving hydraulic cylinder (334) are all placed at the junction of the needle tube of the conical joint (1) and the plastic joint.

5. The syringe barrel conical joint air tightness detection device according to claim 4, characterized in that: The joint port detection device (33) also includes a needle plug (335), a support rod (336) and a drive motor (337); the drive motor (337) is tightly connected to the bottom of the motor mounting groove (213); the output end of the drive motor (337) is tightly connected to the support rod (336); the needle plug (335) is tightly connected to one end of the support rod (336) away from the drive motor (337); the air compressor (31) is placed on one end of the mounting plate (21) close to the drive hydraulic cylinder (334); and one end of the ventilation pipe (32) is tightly connected to the air outlet of the air compressor (31).

6. The syringe barrel conical joint air tightness detection device according to claim 2, characterized in that: The screening mechanism (4) comprises a long sorting disc (41), the long sorting disc (41) being placed on the mounting plate (21), the long sorting disc (41) being placed in the direction of the needle of the conical joint (1), and a sorting cavity (411) being provided in the long sorting disc (41).

7. The syringe barrel conical joint air tightness detection device according to claim 6, characterized in that: The screening mechanism (4) further comprises a vibration device (42), wherein the vibration device (42) is connected to the vibration installation groove (214), the vibration device (42) is connected to the long sorting plate (41), the vibration device (42) is connected to the sorting chamber (411), the vibration device (42) comprises a vibrator (421), an anti-drop baffle (422) and a sponge bottom pad (423), the vibrator (421) is provided with two, the two vibrators ( The vibrator (421) is respectively placed in two vibration installation grooves (214), the output ends of the two vibrators (421) are respectively fastened to the two ends of the bottom of the long sorting disk (41), the anti-drop baffle (422) is fastened to the long sorting disk (41), the sponge bottom pad (423) is placed in the long sorting disk (41), the sponge bottom pad (423) is fastened to the inner wall of the sorting cavity (411), and the sponge bottom pad (423) is provided with a plurality of strip folds.

8. The syringe barrel conical joint air tightness detection device according to claim 2, characterized in that: The clamping mechanism (5) comprises a return spring (51), a rotating baffle (52), a baffle rotating rod (53) and a fixed side baffle (54), wherein two return springs (51) are provided, two rotating baffles (52) are provided, two baffle rotating rods (53) are provided, and two fixed side baffles (54) are provided. The two baffle rotating rods (53) are respectively rotatably connected to two fixed rotating grooves (211), and the two baffle rotating rods (53) are respectively fastened to the two rotating baffles (52). The two fixed side baffles (54) are symmetrically mounted on both sides of the mounting plate (21), one end of the return spring (51) is fastened to the fixed side baffle (54), and one end of the return spring (51) away from the fixed side baffle (54) is fastened to the rotating baffle (52).

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