Air tightness testing device for infusion apparatus

Abstract

The invention belongs to the technical field of air tightness testing, and particularly discloses an air tightness testing device of an infusion apparatus, which comprises a guide limiting mechanism, a pushing pressurization testing mechanism, a reciprocating driving mechanism and a receiving assembly, and is characterized in that the pushing pressurization testing mechanism is arranged on the guide limiting mechanism, and the reciprocating driving mechanism is arranged on the guide limiting mechanism; and the receiving assembly and the guide limiting mechanism are oppositely arranged. According to the scheme, the sliding push plate which continuously moves in a reciprocating mode is utilized, feeding and position adjustment of the to-be-tested workpiece can be automatically completed, the interior of the to-be-tested workpiece can be pressurized in the extrusion process, and after testing is completed, the to-be-tested workpiece can be automatically released through the blocking and releasing assembly; in addition, gas used in the testing process is used for driving the to-be-tested workpiece to be discharged, the gas leakage amount is fed back according to the amount of residual gas, and unqualified products are screened according to the gas leakage amount.

Description

Technical Field

[0001] The present invention belongs to the technical field of airtightness testing, and specifically refers to an airtightness testing device for an infusion set. Background Art

[0002] As a type of infusion device, a syringe mainly injects the medicine inside into the target position by using the pressure generated by the sliding of the piston; therefore, the airtightness of its main housing is a very important parameter. During mass production, according to the different quality grades of the products, it is necessary to conduct airtightness tests on them by sampling inspection or even full inspection; from the perspective of product production testing, it is not necessary to obtain the final airtightness value, and it is only necessary to judge whether the airtightness is qualified.

[0003] Most of the current testing devices are relatively complex. Because there are multiple processes such as loading, testing, and unloading in the whole measurement process, and at the same time, multiple complex steps such as pressurization, pressure relief, and detection and screening are also required, and often an air pump needs to be used in combination, which results in a large floor area, high cost, and relatively complex structure of the current airtightness testing device for infusion sets, thus affecting its practicability and promotion value. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention proposes an airtightness testing device for an infusion set with a simple and reliable structure; this solution uses a continuously reciprocating sliding push plate, which can not only automatically complete the feeding and position adjustment of the workpiece to be tested, but also pressurize the inside of the workpiece to be tested during the extrusion process, and can automatically release the workpiece to be tested through a blocking and releasing component after the test is completed; moreover, the present invention also uses the gas used in the testing process to drive the workpiece to be tested to unload, and feeds back the amount of gas leakage according to the amount of residual gas, and screens out unqualified products based on this.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes an airtightness testing device for an infusion set, which includes a guiding and limiting mechanism, a pushing, pressurizing and testing mechanism, a reciprocating driving mechanism and a receiving component. The pushing, pressurizing and testing mechanism is arranged on the guiding and limiting mechanism, the reciprocating driving mechanism is arranged on the guiding and limiting mechanism, and the receiving component is arranged opposite to the guiding and limiting mechanism.

[0006] Further, the guiding and limiting mechanism includes a partitioned guiding box, a sliding guiding component and a blanking guiding component. Partition plates are arranged in an array in the middle of the partitioned guiding box. The partitioned guiding box is inclined. A lower baffle is arranged at one end of the partitioned guiding box, and the end where the lower baffle is located is at a lower position. The sliding guiding component is arranged on the partitioned guiding box, and the blanking guiding component is arranged on the sliding guiding component.

[0007] The separated guide box can be used to limit and guide the sliding of the workpiece before measurement and after release, and the workpiece can be screened after the test. The reciprocating sliding of the sliding push plate can drive the reciprocating booster assembly to move back and forth. On the one hand, it can automatically load the material, and on the other hand, it can perform a pressurized test on the workpiece during the reciprocating motion.

[0008] The partition guide box is tilted as a whole, which can ensure that products with unqualified sealing can slide along the partition guide box to the gap near the lower baffle under the action of their own weight when there is no compressed gas to push them, so as to avoid affecting the next set of tests.

[0009] Furthermore, the sliding guide assembly includes a frame-type guide frame, a guide rod and a sliding push plate, the frame-type guide frame is fixed to the partition-type guide box, the guide rod is fixed to the frame-type guide frame, the sliding push plate is snap-fitted and slidably arranged on the guide rod, and a hinged column is provided on the sliding push plate.

[0010] As a further preferred embodiment of the present invention, the material unloading guide assembly includes a material unloading frame, an angle limiting bracket, a release push rod and a linkage release plate. The material unloading frame is fixedly connected to the frame-type guide frame. The middle array of the material unloading frame is provided with a middle partition. The angle limiting bracket is composed of a circular ring mounting part, a spiral toggle rod, a straight toggle rod and a short limiting rod. The angle limiting bracket is fixedly connected to the frame-type guide frame through the circular ring mounting part. The release push rod is fixedly connected to the sliding push plate. The linkage release plate is arranged on the blocking release assembly.

[0011] The unloading frame is divided into multiple independent unloading spaces by the middle partition. Therefore, when there is no obstruction below the unloading frame, the workpieces to be tested stored in the unloading frame can fall under the action of gravity. During the test process, they will not fall due to the obstruction of the reciprocating pressurizing chamber below. The workpieces to be tested in the unloading frame will be unloaded again after the reciprocating pressurizing chamber is reset.

[0012] Furthermore, the push-boost test mechanism includes a workpiece limiting frame, a workpiece to be tested, a reciprocating boost assembly and a blocking and releasing assembly, the workpiece limiting frame is arranged in a partitioned guide box, the workpiece to be tested is slidably arranged in the workpiece limiting frame, the reciprocating boost assembly is slidably arranged in the sliding guide assembly, and the blocking and releasing assembly is arranged on the partitioned guide box.

[0013] Furthermore, the workpiece limiting frame is provided with a position-avoiding cut angle matching the spiral toggle rod, and one end of the workpiece to be measured is symmetrically provided with a side wing portion.

[0014] When the workpiece to be measured falls from the feeding frame, due to the movement of the short limit rod, the side wing portion is roughly in a vertical state when the workpiece to be measured falls on the straight push rod and the short limit rod. In the subsequent process of being pushed forward, the side wing portion is rotated to a horizontal state by the movement of the spiral push rod on the side wing portion.

[0015] As a further preferred embodiment of the present invention, the reciprocating booster assembly includes a reciprocating booster chamber, a reciprocating piston and a reciprocating push rod. The reciprocating booster chamber is slidably arranged in a sliding push plate, the reciprocating piston is snap-fitted and slidably arranged in the reciprocating booster chamber, the reciprocating push rod and the reciprocating piston are fixedly connected, and the other end of the reciprocating push rod is fixedly connected to the sliding push plate.

[0016] As a further preferred embodiment of the present invention, the blocking release assembly includes a lifting bracket, a lifting baffle, a baffle return spring and an elastic rope. The lifting bracket is provided with a lifting guide rod, and the lifting bracket is fixedly connected to the partition guide box through the lifting guide rod. The lifting baffle is snap-fitted and slidably arranged on the lifting guide rod. A vertical baffle portion is provided below the lifting baffle, and the vertical baffle portion is slidably arranged in the partition guide box. The baffle return spring is arranged between the lifting bracket and the lifting baffle, one end of the elastic rope is fixedly connected to the lifting baffle, and the other end of the elastic rope passes through the lifting bracket and is fixedly connected to the linkage release plate, and the linkage release plate is slidably arranged on the lifting bracket.

[0017] Through the reciprocating motion of the reciprocating booster assembly, not only can the falling of the workpiece to be tested in the feed frame be controlled, but also the booster test of the workpiece to be tested can be completed in each cycle; and in the final stage of the booster test, the blocking release assembly is triggered by the sliding of the reciprocating booster assembly, thereby releasing the position restriction of the workpiece to be tested, and the sealing of the workpiece to be tested is judged by the amount of participating gas.

[0018] Furthermore, the reciprocating drive mechanism includes a reciprocating rocker, a toothed reciprocating turntable and a drive assembly, the toothed reciprocating turntable is rotatably arranged at the bottom of the partitioned guide box, one end of the reciprocating rocker is hinged to the hinge column, an eccentric rotating shaft is provided on the toothed reciprocating turntable, the other end of the reciprocating rocker is hinged to the eccentric rotating shaft, and the drive assembly is arranged on the side of the partitioned guide box.

[0019] Furthermore, the driving assembly includes a driving motor, a driving gear and a transmission gear, the driving motor is fixedly connected to the side of the partition guide box, the driving gear is fixedly connected to the output shaft of the driving motor, the transmission gear is rotatably arranged on the partition guide box, the transmission gear and the driving gear are meshed for transmission, and the transmission gear and the toothed reciprocating turntable are meshed for transmission.

[0020] Furthermore, the receiving assembly includes a conveyor belt, a rack and an elastic sleeve, the rack array is arranged on the conveyor belt, the elastic sleeve array is arranged on the rack, and the inner layer of the elastic sleeve is evenly distributed with dividing grooves in an annular shape.

[0021] The inner circle of the elastic sleeve is divided into a plurality of elastic sheets by the dividing grooves, and the workpiece to be measured can be inserted into the elastic sleeve through the elastic sheets and effectively clamp the elastic sleeve.

[0022] The beneficial effects achieved by the present invention using the above structure are as follows: (1) The separated guide box can limit and guide the sliding of the workpiece before and after measurement, and screen the workpiece after the test; the reciprocating sliding of the sliding push plate can drive the reciprocating pressurizing component to move back and forth, which can automatically load the material on the one hand, and pressurize the workpiece during the reciprocating motion on the other hand.

[0023] (2) The partition guide box is tilted as a whole, which can ensure that products with unqualified sealing properties can slide along the partition guide box to the gap near the lower baffle under the action of their own weight when there is no compressed gas to push them, so as to avoid affecting the next set of tests.

[0024] (3) The unloading frame is divided into multiple independent unloading spaces by the middle partition. Therefore, when there is no obstruction below the unloading frame, the workpieces to be tested stored in the unloading frame can fall under the action of gravity. During the test process, they will not fall due to the obstruction of the reciprocating pressurizing chamber below. The workpieces to be tested in the unloading frame will be unloaded again after the reciprocating pressurizing chamber is reset.

[0025] (4) When the workpiece to be measured falls from the material discharge frame, due to the movement of the short limit rod, the side wing portion is roughly in a vertical state when the workpiece to be measured falls on the straight push rod and the short limit rod. In the subsequent process of being pushed forward, the side wing portion is rotated to a horizontal state by the movement of the spiral push rod on the side wing portion.

[0026] (5) Through the reciprocating motion of the reciprocating booster assembly, not only can the falling of the workpiece to be tested in the material frame be controlled, but also the booster test of the workpiece to be tested can be completed in each cycle; and in the final stage of the booster test, the blocking release assembly is triggered by the sliding of the reciprocating booster assembly, thereby releasing the position restriction of the workpiece to be tested, and the sealing of the workpiece to be tested is judged by the amount of participating gas.

[0027] (6) The inner ring of the elastic sleeve is divided into a plurality of elastic sheets by the dividing grooves, and the elastic sheets allow the workpiece to be inserted into the elastic sleeve and effectively clamp the elastic sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A perspective view of an airtightness testing device for an infusion set proposed by the present invention; Figure 2 A front view of an airtightness testing device for an infusion set proposed by the present invention; Figure 3 A left view of an airtightness testing device for an infusion set proposed by the present invention; Figure 4 A top view of an airtightness testing device for an infusion set proposed by the present invention; Figure 5 A bottom view of an airtightness testing device for an infusion set proposed by the present invention; Figure 6 is Figure 2 A cross-sectional view along the cutting line A-A in Figure 7 is Figure 6 A cross-sectional view along the cutting line B-B in Figure 8 is Figure 2 A cross-sectional view along the cutting line C-C in Figure 9 An exploded structural schematic diagram of an airtightness testing device for an infusion set proposed by the present invention; Figure 10 is Figure 6 A partial enlarged view at position I in Figure 11 is Figure 7 A partial enlarged view at position II in Figure 12 is Figure 9 A partial enlarged view at position III in Figure 13 A perspective view of the angle limiting bracket.

[0029] Among them, 1. guide limit mechanism, 2. push-pressurization test mechanism, 3. reciprocating drive mechanism, 4. receiving assembly, 5. partition guide box, 6. sliding guide assembly, 7. unloading guide assembly, 8. partition plate, 9. lower baffle, 10. frame guide frame, 11. guide rod, 12. sliding push plate, 13. unloading frame, 14. angle limit bracket, 15. release push rod, 16. linkage release plate, 17. hinged column, 18. middle partition, 19. ring mounting part, 20. spiral toggle rod, 21. straight toggle rod, 22. short limit rod, 23. workpiece limit frame, 24. Workpiece, 25, reciprocating booster assembly, 26, blocking release assembly, 27, avoidance cut angle, 28, side wing, 29, reciprocating booster chamber, 30, reciprocating piston, 31, reciprocating push rod, 32, lifting bracket, 33, lifting baffle, 34, baffle return spring, 35, elastic rope, 36, lifting guide rod, 37, vertical baffle part, 38, reciprocating rocker, 39, toothed reciprocating turntable, 40, driving assembly, 41, eccentric shaft, 42, driving motor, 43, driving gear, 44, transmission gear, 45, conveyor belt, 46, rack, 47, elastic sleeve, 48, partition groove.

[0030] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0033] like Figures 1 to 13 As shown, the present invention proposes an air tightness test device for an infusion set, comprising a guide limiting mechanism 1, a push-and-pressurize test mechanism 2, a reciprocating drive mechanism 3 and a receiving assembly 4, wherein the push-and-pressurize test mechanism 2 is arranged on the guide limiting mechanism 1, the reciprocating drive mechanism 3 is arranged on the guide limiting mechanism 1, and the receiving assembly 4 and the guide limiting mechanism 1 are arranged relatively to each other.

[0034] The receiving assembly 4 comprises a conveyor belt 45 , a rack 46 and an elastic sleeve 47 . The rack 46 is arranged in an array on the conveyor belt 45 , and the elastic sleeve 47 is arranged in an array on the rack 46 . The inner layer of the elastic sleeve 47 is evenly and annularly provided with separation grooves 48 .

[0035] The inner circle of the elastic sleeve 47 is divided into a plurality of elastic pieces by the dividing grooves 48 , and the workpiece 24 to be measured can be inserted into the elastic sleeve 47 through the elastic pieces and effectively clamp the elastic sleeve 47 .

[0036] The guide and limiting mechanism 1 includes a partitioning guide box 5, a sliding guide assembly 6 and a material discharge guide assembly 7. A partition plate 8 is provided in the middle array of the partitioning guide box 5. The partitioning guide box 5 is arranged at an angle. A lower baffle plate 9 is provided at one end of the partitioning guide box 5. The end where the lower baffle plate 9 is located is located at a low position. The sliding guide assembly 6 is arranged on the partitioning guide box 5, and the material discharge guide assembly 7 is arranged on the sliding guide assembly 6.

[0037] The partitioned guide box 5 can be used to limit and guide the sliding of the workpiece 24 before and after measurement and release, and the workpiece 24 to be tested can be screened after the test. The reciprocating sliding of the sliding push plate 12 can drive the reciprocating booster assembly 25 to move back and forth. On the one hand, it can automatically load the material, and on the other hand, it can perform a pressurized test on the workpiece 24 to be tested during the reciprocating motion.

[0038] The partition guide box 5 is tilted as a whole, which can ensure that products with unqualified sealing properties can slide along the partition guide box 5 to the gap near the lower baffle 9 under the action of their own weight when there is no compressed gas to push them, so as to avoid affecting the next set of tests.

[0039] The sliding guide assembly 6 includes a frame guide frame 10, a guide rod 11 and a sliding push plate 12. The frame guide frame 10 is fixedly connected to the partition guide box 5, the guide rod 11 is fixedly connected to the frame guide frame 10, the sliding push plate 12 is slidably engaged on the guide rod 11, and a hinge column 17 is provided on the sliding push plate 12.

[0040] The material unloading guide assembly 7 includes a material unloading frame 13, an angle limiting bracket 14, a release push rod 15 and a linkage release plate 16. The material unloading frame 13 is fixedly connected to the frame guide frame 10. The middle array of the material unloading frame 13 is provided with a middle partition 18. The angle limiting bracket 14 is composed of a circular ring mounting portion 19, a spiral toggle rod 20, a straight toggle rod 21 and a short limiting rod 22. The angle limiting bracket 14 is fixedly connected to the frame guide frame 10 through the circular ring mounting portion 19. The release push rod 15 is fixedly connected to the sliding push plate 12. The linkage release plate 16 is arranged on the blocking release assembly 26.

[0041] The unloading frame 13 is divided into multiple independent unloading spaces by the middle partition 18. Therefore, when there is no obstruction below the unloading frame 13, the workpiece 24 to be tested stored in the unloading frame 13 can fall under the action of gravity. During the test process, it will not fall due to the obstruction of the reciprocating pressurizing chamber 29 below. The workpiece 24 to be tested in the unloading frame 13 will be unloaded again after the reciprocating pressurizing chamber 29 is reset.

[0042] The reciprocating drive mechanism 3 includes a reciprocating rocker 38, a toothed reciprocating turntable 39 and a drive assembly 40. The toothed reciprocating turntable 39 is rotatably arranged at the bottom of the partitioned guide box 5. One end of the reciprocating rocker 38 is hinged to the hinge column 17. An eccentric shaft 41 is provided on the toothed reciprocating turntable 39. The other end of the reciprocating rocker 38 is hinged to the eccentric shaft 41. The drive assembly 40 is arranged on the side of the partitioned guide box 5.

[0043] The driving assembly 40 includes a driving motor 42, a driving gear 43 and a transmission gear 44. The driving motor 42 is fixedly connected to the side of the partition guide box 5, the driving gear 43 is fixedly connected to the output shaft of the driving motor 42, and the transmission gear 44 is rotatably arranged on the partition guide box 5. The transmission gear 44 and the driving gear 43 are meshed for transmission, and the transmission gear 44 and the toothed reciprocating turntable 39 are meshed for transmission.

[0044] The push-pushing test mechanism 2 includes a workpiece limiting frame 23, a workpiece to be tested 24, a reciprocating boosting assembly 25 and a blocking and releasing assembly 26. The workpiece limiting frame 23 is arranged in a partitioned guide box 5, the workpiece to be tested 24 is slidably arranged in the workpiece limiting frame 23, the reciprocating boosting assembly 25 is slidably arranged in the sliding guide assembly 6, and the blocking and releasing assembly 26 is arranged on the partitioned guide box 5.

[0045] The workpiece limiting frame 23 is provided with a avoiding cut angle 27 matching with the spiral toggle rod 20 , and one end of the workpiece 24 to be measured is symmetrically provided with a side wing portion 28 .

[0046] During the process of the workpiece 24 to be measured falling from the blanking frame 13, due to the movement of the short limit rod 22, the side wing portion 28 is roughly in a vertical state when the workpiece 24 to be measured falls on the straight push rod 21 and the short limit rod 22. In the subsequent process of being pushed forward, the side wing portion 28 is rotated to a horizontal state by the movement of the spiral push rod 20 on the side wing portion 28.

[0047] The reciprocating booster assembly 25 includes a reciprocating booster chamber 29, a reciprocating piston 30 and a reciprocating push rod 31. The reciprocating booster chamber 29 is slidably disposed in the sliding push plate 12. The reciprocating piston 30 is snap-fitted and slidably disposed in the reciprocating booster chamber 29. The reciprocating push rod 31 is fixedly connected to the reciprocating piston 30, and the other end of the reciprocating push rod 31 is fixedly connected to the sliding push plate 12.

[0048] The blocking release assembly 26 includes a lifting bracket 32, a lifting baffle 33, a baffle return spring 34 and an elastic rope 35. The lifting bracket 32 ​​is provided with a lifting guide rod 36, and the lifting bracket 32 ​​is fixedly connected to the partition guide box 5 through the lifting guide rod 36. The lifting baffle 33 is slidably arranged on the lifting guide rod 36. A vertical baffle portion 37 is provided below the lifting baffle 33, and the vertical baffle portion 37 is slidably arranged in the partition guide box 5. The baffle return spring 34 is arranged between the lifting bracket 32 ​​and the lifting baffle 33. One end of the elastic rope 35 is fixedly connected to the lifting baffle 33, and the other end of the elastic rope 35 passes through the lifting bracket 32 ​​and is fixedly connected to the linkage release plate 16. The linkage release plate 16 is slidably arranged on the lifting bracket 32.

[0049] Through the reciprocating motion of the reciprocating booster assembly 25, not only can the falling of the workpiece 24 to be tested in the discharge frame 13 be controlled, but also the booster test of the workpiece 24 to be tested can be completed in each cycle; and in the final stage of the booster test, the blocking release assembly 26 is triggered by the sliding of the reciprocating booster assembly 25, thereby releasing the position restriction of the workpiece 24 to be tested, and judging whether the sealing of the workpiece 24 to be tested is acceptable by the amount of participating gas.

[0050] When in use, the user first needs to start the driving motor 42, which can drive the toothed reciprocating turntable 39 to rotate continuously through the transmission of the driving gear 43 and the transmission gear 44. During the continuous rotation of the toothed reciprocating turntable 39, the reciprocating rocker 38 can drive the sliding push plate 12 to slide back and forth along the guide rod 11; When the sliding push plate 12 slides to the farthest limit position, the workpiece 24 to be measured in the blanking frame 13 falls into the angle limit bracket 14 and is supported in position by the spiral toggle rod 20 and the short limit rod 22. If the side wing portion 28 is in a nearly vertical state when it falls, the circular ring mounting portion 19 cannot toggle it. If the side wing portion 28 is in a nearly horizontal state when it falls, due to the toggle of the circular ring mounting portion 19, the side wing portion 28 will also be transformed into a nearly vertical state, that is, one side wing portion 28 will be located between the spiral toggle rod 20 and the short limit rod 22.

[0051] As the sliding push plate 12 moves toward the receiving assembly 4, since the friction between the reciprocating pressurizing chamber 29 and the reciprocating piston 30 is greater than the friction between the reciprocating pressurizing chamber 29 and the sliding push plate 12, the sliding push plate 12 first pushes the reciprocating pressurizing chamber 29 to slide toward the workpiece 24 to be measured through the reciprocating push rod 31, until the reciprocating pressurizing chamber 29 and the workpiece 24 to be measured contact and combine and push the workpiece 24 to be measured toward the workpiece limit frame 23; During the process of pushing the workpiece 24 to be tested, with the limitation of the spiral push rod 20 and the straight push rod 21, the flank part 28 will inevitably rotate to the horizontal state. Then, the workpiece 24 to be tested will stop after contacting the vertical baffle part 37. At this time, the flank part 28 is blocked by the vertical baffle part 37. One end of the workpiece 24 to be tested communicates with the reciprocating pressurizing cavity 29, and the other end is also blocked and sealed by the vertical baffle part 37. Subsequently, the sliding push plate 12 continues to advance, and the reciprocating push rod 31 and the reciprocating piston 30 will slide in the reciprocating pressurizing cavity 29, thereby pushing the air in the reciprocating pressurizing cavity 29 into the workpiece 24 to be tested and continuously increasing the air pressure in the workpiece 24 to be tested. If the workpiece 24 to be tested has good self-sealing performance, the gas leakage is within the controllable range. If the workpiece 24 to be tested has poor self-sealing performance, too much gas will leak.

[0052] When the sliding push plate 12 is about to be pushed to the end, the release push rod 15 on the sliding push plate 12 will contact and push the linkage release plate 16, and the linkage release plate 16 will drive the elastic cord 35 to move. During this process, the elastic cord 35 is stretched. However, due to the frictional force between the vertical baffle part 37 and the workpiece 24 to be tested, in the initial stage of the stretching of the elastic cord 35, the lifting baffle 33 will not slide upward against the elastic force of the baffle return spring 34. When the elastic force of the elastic cord 35 accumulates to a level sufficient to pull the lifting baffle 33, the lifting baffle 33 will quickly slide upward. The sliding of each group of lifting baffles 33 may not be synchronous, but since each test air cavity is also independent, it will not affect the test results.

[0053] After the lifting baffle 33 drives the vertical baffle part 37 to rise, the workpiece 24 to be tested that has lost the block will slide towards the receiving component 4 under the push of the air pressure. If the workpiece 24 to be tested has good self-sealing performance, the gas leakage is within the controllable range. When the workpiece 24 to be tested is released, the internal pressure is relatively large, and the workpiece 24 to be tested can directly insert into the elastic sleeve 47 at a relatively fast speed and be fixed. During this process, the workpiece position limiting frame 23 can limit the sliding direction of the workpiece 24 to be tested. If the workpiece 24 to be tested has poor self-sealing performance, too much gas will leak. When the workpiece 24 to be tested is released, the internal pressure is relatively small, and the release speed of the workpiece 24 to be tested is slow, which is not sufficient to make the workpiece 24 to be tested insert into the elastic sleeve 47. At this time, the workpiece 24 to be tested will slide along the inclined receiving component 4 to the notch near the lower baffle 9 and fall into the non-conforming product collection box. The lower baffle 9 has the function of preventing the workpiece 24 to be tested from inserting into the elastic sleeve 47 below.

[0054] After the test is completed, the sliding push plate 12 starts to reset. First, the reciprocating pressurizing cavity 29 will follow the sliding push plate 12 to slide and reset. When the reciprocating pressurizing cavity 29 slides to the limit position, the reciprocating piston 30 and the reciprocating push rod 31 will extend from the reciprocating pressurizing cavity 29 and complete the reset as the sliding push plate 12 continues to slide.

[0055] It should be noted that, in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0056] The above describes the present invention and its embodiments, and this description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the present invention, design similar structural modes and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. An air tightness test device for an infusion set, characterized in that: It comprises a guide limit mechanism (1), a push-pressurization test mechanism (2), a reciprocating drive mechanism (3) and a receiving assembly (4), wherein the push-pressurization test mechanism (2) is arranged on the guide limit mechanism (1), the reciprocating drive mechanism (3) is arranged on the guide limit mechanism (1), and the receiving assembly (4) and the guide limit mechanism (1) are arranged relative to each other; The guide limiting mechanism (1) comprises a partitioning guide box (5), a sliding guide assembly (6) and a material removal guide assembly (7); a partition plate (8) is provided in the middle array of the partitioning guide box (5); the partitioning guide box (5) is arranged in an inclined manner; a lower baffle plate (9) is provided at one end of the partitioning guide box (5); the end where the lower baffle plate (9) is located is located at a lower position; the sliding guide assembly (6) is arranged on the partitioning guide box (5); and the material removal guide assembly (7) is arranged on the sliding guide assembly (6); The push-pushing test mechanism (2) comprises a workpiece limiting frame (23), a workpiece to be tested (24), a reciprocating pressurizing assembly (25) and a blocking and releasing assembly (26); the workpiece limiting frame (23) is arranged in a partitioned guide box (5); the workpiece to be tested (24) is slidably arranged in the workpiece limiting frame (23); the reciprocating pressurizing assembly (25) is slidably arranged in a sliding guide assembly (6); and the blocking and releasing assembly (26) is arranged on the partitioned guide box (5).

2. The air tightness testing device for an infusion set according to claim 1, characterized in that: The sliding guide assembly (6) comprises a frame-type guide frame (10), a guide rod (11) and a sliding push plate (12); the frame-type guide frame (10) is fixedly connected to the partition-type guide box (5); the guide rod (11) is fixedly connected to the frame-type guide frame (10); the sliding push plate (12) is slidably engaged with the guide rod (11); and a hinge column (17) is provided on the sliding push plate (12).

3. The air tightness testing device for an infusion set according to claim 2, characterized in that: The material unloading guide assembly (7) comprises a material unloading frame (13), an angle limiting bracket (14), a release push rod (15) and a linkage release plate (16); the material unloading frame (13) is fixedly connected to the frame-type guide frame (10); the middle array of the material unloading frame (13) is provided with a middle partition plate (18); the angle limiting bracket (14) is composed of a circular ring mounting portion (19), a spiral toggle rod (20), a straight toggle rod (21) and a short limiting rod (22); the angle limiting bracket (14) is fixedly connected to the frame-type guide frame (10) through the circular ring mounting portion (19); the release push rod (15) is fixedly connected to the sliding push plate (12); and the linkage release plate (16) is provided on the blocking release assembly (26).

4. The air tightness testing device for an infusion set according to claim 3, characterized in that: The workpiece limiting frame (23) is provided with a position-avoiding cut-off angle (27) matching the spiral toggle rod (20), and one end of the workpiece to be measured (24) is symmetrically provided with a side wing portion (28).

5. The air tightness testing device for an infusion set according to claim 4, characterized in that: The reciprocating booster assembly (25) comprises a reciprocating booster chamber (29), a reciprocating piston (30) and a reciprocating push rod (31); the reciprocating booster chamber (29) is slidably disposed in a sliding push plate (12); the reciprocating piston (30) is snap-fitted and slidably disposed in the reciprocating booster chamber (29); the reciprocating push rod (31) and the reciprocating piston (30) are fixedly connected; and the other end of the reciprocating push rod (31) is fixedly connected to the sliding push plate (12).

6. The air tightness test device for an infusion set according to claim 5, characterized in that: The blocking release assembly (26) comprises a lifting bracket (32), a lifting baffle (33), a baffle return spring (34) and an elastic rope (35). The lifting bracket (32) is provided with a lifting guide rod (36). The lifting bracket (32) is fixedly connected to the partition guide box (5) through the lifting guide rod (36). The lifting baffle (33) is slidably arranged on the lifting guide rod (36). A vertical baffle portion (37) is provided below the lifting baffle (33). The vertical baffle portion (37) is slidably arranged in the partition guide box (5). The baffle return spring (34) is arranged between the lifting bracket (32) and the lifting baffle (33). One end of the elastic rope (35) is fixedly connected to the lifting baffle (33). The other end of the elastic rope (35) passes through the lifting bracket (32) and is fixedly connected to the linkage release plate (16). The linkage release plate (16) is slidably arranged on the lifting bracket (32).

7. The air tightness testing device for an infusion set according to claim 6, characterized in that: The reciprocating drive mechanism (3) comprises a reciprocating rocker (38), a toothed reciprocating turntable (39) and a drive assembly (40); the toothed reciprocating turntable (39) is rotatably arranged at the bottom of the partitioned guide box (5); one end of the reciprocating rocker (38) is hinged to a hinge column (17); an eccentric rotating shaft (41) is arranged on the toothed reciprocating turntable (39); the other end of the reciprocating rocker (38) is hinged to the eccentric rotating shaft (41); and the drive assembly (40) is arranged on a side of the partitioned guide box (5).

8. The air tightness testing device for an infusion set according to claim 7, characterized in that: The driving assembly (40) comprises a driving motor (42), a driving gear (43) and a transmission gear (44); the driving motor (42) is fixedly connected to a side surface of the partitioned guide box (5); the driving gear (43) is fixedly connected to an output shaft of the driving motor (42); the transmission gear (44) is rotatably arranged on the partitioned guide box (5); the transmission gear (44) and the driving gear (43) are meshed for transmission; and the transmission gear (44) and the toothed reciprocating rotating disk (39) are meshed for transmission.

9. The air tightness testing device for an infusion set according to claim 8, characterized in that: The receiving assembly (4) comprises a conveyor belt (45), a rack (46) and an elastic sleeve (47); the rack (46) is arranged in an array on the conveyor belt (45); the elastic sleeve (47) is arranged in an array on the rack (46); and the inner layer of the elastic sleeve (47) is evenly distributed with separation grooves (48) in an annular manner.

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