Silicone tube performance detection device

Abstract

The invention relates to the field of medical material detection, in particular to a silicone tube performance detection device which comprises a pedestal, an air tightness detector is fixedly mounted on the upper side of the pedestal, an L-shaped frame is rotatably arranged at the left end of the upper side of the pedestal, and a dynamic mechanism used for continuously changing the curvature of a silicone tube is arranged on the L-shaped frame. According to the device, the two scissor plates which synchronously and reversely move are adopted to drive the clamping rollers on the scissor plates to extrude the corresponding parts of the silicone tube in a reciprocating manner, and the T-shaped block is linked to drive the fixed ring frame to drive the extrusion position of the silicone tube to reciprocate, so that the bending curvature of the silicone tube is continuously changed in a reciprocating manner; the dynamic curvature change caused by the fact that one end of the silicone tube is fixed and the other end of the silicone tube reciprocates in the actual working condition is accurately simulated, the repeated bending accelerated aging process is effectively reproduced, and the bending position can be adjusted by rotating the L-shaped frame.

Description

Technical Field

[0001] The invention relates to the field of medical material detection, and in particular to a silicone tube performance detection device. Background Art

[0002] At present, the air tightness test of medical silicone tubes mainly relies on air tightness testers. During the test, the operator needs to insert the two ends of the silicone tube sample into the two air holes of the air tightness tester and fix them. Then the tester introduces gas with constant pressure into the tube and continuously monitors the stability of the air pressure in the tube through the sensor. If the air pressure drops by more than the threshold within the set time, the silicone tube is judged to be unqualified for air tightness.

[0003] Existing airtightness testing methods have the following shortcomings: when silicone tubes are working in medical equipment, one end is often fixed with the feeding device and the other end moves back and forth with the discharging device, resulting in continuous changes in the curvature of the tube body. This repeated bending will accelerate material aging, cause microcracks and reduce airtightness. The existing static airtightness testing method cannot reproduce this process.

[0004] In addition, silicone tubes are frequently subjected to external pressure and surface friction during use, such as roller squeezing or continuous sliding contact with instruments. These mechanical stresses will directly affect the structural integrity and sealing performance of the tube wall. The existing technology lacks simulation of working conditions such as pressing and friction, resulting in the test results being unable to truly reflect the airtightness attenuation of silicone tubes under dynamic use.

[0005] In summary, there is an urgent need for a dynamic detection device that can simultaneously simulate curvature changes, mechanical pressure, and friction to improve the accuracy of airtightness testing. Summary of the Invention

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a silicone tube performance testing device, including a pedestal, an airtightness tester is fixedly installed on the upper side of the pedestal, an L-shaped frame is rotatably provided on the upper left end of the pedestal, and the L-shaped frame is provided with a dynamic mechanism for continuously changing the curvature of the silicone tube, and a simulation mechanism for simulating the working conditions of the silicone tube when in use.

[0007] The dynamic mechanism includes two scissor plates that are symmetrically arranged front to back and are hinged to the upper end of the vertical section of the L-shaped frame. Two clamping rollers for clamping the silicone tube are provided on the left side of the scissor plates through a moving component.

[0008] The simulation mechanism includes a T-shaped block sliding on the horizontal section of the L-shaped frame along its length direction, a fixed ring frame is fixedly installed on the horizontal section of the T-shaped block, and a pressing roller and a brush block are arranged inside the fixed ring frame through a rotating component.

[0009] The two shear plates move back and forth in synchronous directions, causing the clamping rollers to push the corresponding parts of the silicone tube to squeeze back and forth, thereby continuously changing the curvature of the silicone tube. The rotating assembly drives the pressing roller and the brush block to rotate around the silicone tube, simulating the pressure and friction that the silicone tube is subjected to during use.

[0010] Preferably, a driven bevel gear is fixedly mounted on the outer side of the vertical section of the L-shaped frame, a rotating motor is fixedly mounted on the inner side of the pedestal, and a driving bevel gear meshing with the driven bevel gear is fixedly mounted on the output shaft of the rotating motor.

[0011] Preferably, a linkage plate is hinged on the left side of the scissor plate, a support plate is fixedly installed on the left side of the fixed ring frame, and the left ends of the two linkage plates are hinged to the support plate.

[0012] Preferably, the moving assembly includes two symmetrically arranged moving blocks sliding on the shear plate along its length direction, the moving blocks are rotatably connected to the clamping rollers at corresponding positions, and a coil spring is provided between the right moving block and the corresponding shear plate.

[0013] Preferably, a synchronous plate is rotatably provided on the lower side of the scissor plate, and push-pull plates are hinged at both ends of the synchronous plate, and the push-pull plates are hinged to the moving blocks at corresponding positions.

[0014] Preferably, a locking rod is fixedly mounted on the shear plate, a through hole for the locking rod to pass through is provided on the moving block, and locking holes are provided on the rotating shaft of the clamping roller at equal intervals along its circumference.

[0015] Preferably, a fixing rod is fixedly installed on the lower side of the moving block located on the right part, and two support arms arranged symmetrically front and back are fixedly installed on the horizontal section of the L-shaped frame, and a wedge block for pushing the fixing rod is fixedly installed on the upper end of the support arm.

[0016] Preferably, the rotating assembly includes a rotating cylinder rotatably arranged on the inner side of the fixed ring frame, and a slider No. 1 and a slider No. 2 are relatively arranged and slidingly arranged along the radial direction of the rotating cylinder. The end of the slider No. 1 close to the axis of the rotating cylinder is rotatably connected to the pressing roller, and the end of the slider No. 2 close to the axis of the rotating cylinder is fixedly connected to the brush block.

[0017] Preferably, the ends of the No. 1 and No. 2 sliders away from the axis of the rotating cylinder are both slidably provided with guide rods, and push springs are provided between the No. 1 and No. 2 sliders and the corresponding guide rods. A flower-shaped track groove is opened on the inner wall of the fixed ring frame, and the guide rods are slidably connected inside the flower-shaped track groove.

[0018] Preferably, two front-to-back symmetrical brush plates are arranged at one end of the second slider close to the axis of the rotating cylinder, and the brush plates are hinged to the second slider through a plurality of hinge plates arranged parallel to each other.

[0019] The beneficial effects of the present invention are: 1. The present invention adopts two shear plates that move synchronously in opposite directions to drive the clamping rollers thereon to reciprocate and extrude the corresponding parts of the silicone tube, and links the T-shaped block to drive the fixed ring frame to drive the extrusion position of the silicone tube to move back and forth, so that the silicone tube continuously changes the bending curvature back and forth, accurately simulating the dynamic curvature change of the silicone tube in actual working conditions due to one end being fixed and the other end reciprocating, effectively reproducing the process of accelerated aging due to repeated bending, and the bending position can also be adjusted by rotating the L-shaped frame.

[0020] 2. The present invention adopts a rotating component to drive the pressing roller and the brush block to rotate around the silicone tube, so that the pressing roller continuously squeezes the tube wall to simulate the roller pressing effect, and the brush block periodically rubs the tube wall to simulate the contact wear of the instrument, thereby realizing the synchronous simulation of the dynamic mechanical stress at different positions of the silicone tube, and truly reflecting the impact of pressing and friction on air tightness.

[0021] 3. The present invention adopts a locking rod to cooperate with the locking hole on the rotating shaft of the clamping roller, so that the angle of the clamping roller is locked when the silicone tube is clamped to ensure the clamping stability. When the silicone tube is released, the clamping roller can rotate freely, avoiding the additional stress caused by pulling the silicone tube when rotating the L-shaped frame to adjust the bending position, thereby ensuring the controllability of the testing process.

[0022] 4. The present invention adopts a guide rod that moves along the patterned track groove to dynamically control the pressing force of the pressing roller and the abutting force of the brush block to cope with complex scenes in real working conditions. At the same time, through the parallelogram mechanism of the hinged plate and the brush plate, the brush plate generates axial scraping force during friction, which more realistically reproduces the complex working conditions of the silicone tube under friction, and effectively improves the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and examples.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention when testing a silicone tube.

[0025] Figure 2 It is a partial cross-sectional view of the pedestal, L-shaped frame, rotating motor and driving bevel gear in the present invention.

[0026] Figure 3 It is a structural schematic diagram of the L-shaped frame, shear plate, fixed ring frame and linkage plate in the present invention.

[0027] Figure 4 It is a structural schematic diagram of the shear plate, synchronous plate, push-pull plate and moving block in the present invention.

[0028] Figure 5 It is a partial cross-sectional view of the shear plate, clamping roller, locking rod and moving block in the present invention.

[0029] Figure 6It is a partial cross-sectional view of the T-shaped block, the fixed ring frame, the flower-shaped track groove and the guide rod in the present invention.

[0030] Figure 7 It is a partial cross-sectional view of the rotating cylinder, pressing roller, bristle block and bristle plate in the present invention.

[0031] Figure 8 It is a structural diagram of the second slider, hinged plate and torsion spring in the present invention.

[0032] In the figure: 1. pedestal; 2. air tightness tester; 3. L-shaped frame; 4. dynamic mechanism; 5. simulation mechanism; 31. driven bevel gear; 32. rotating motor; 33. driving bevel gear; 41. shear plate; 42. moving assembly; 43. clamping roller; 44. fixed rod; 51. T-shaped block; 52. fixed ring frame; 53. rotating assembly; 54. pressing roller; 55. brush block; 411. linkage plate; 412. support plate; 413. driving cylinder; 414. locking rod; 421. moving block; 422. synchronous plate; 423. push-pull plate; 441. support arm; 442. wedge block; 531. rotating cylinder; 532. slider No. 1; 533. slider No. 2; 534. guide rod; 535. pattern track groove; 551. brush plate; 552. hinge plate. DETAILED DESCRIPTION

[0033] The following embodiments of the present invention are described in detail. The embodiments described below are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention. Where specific techniques or conditions are not specified in the embodiments, the techniques or conditions described in the literature in the art or in the product specifications shall be followed.

[0034] See Figure 1 A silicone tube performance testing device includes a base 1, an airtightness tester 2 is fixedly installed on the upper side of the base 1, an L-shaped frame 3 is rotatably provided on the left end of the upper side of the base 1, and the L-shaped frame 3 is provided with a dynamic mechanism 4 for continuously changing the curvature of the silicone tube, and a simulation mechanism 5 for simulating the working conditions of the silicone tube when in use.

[0035] When the air tightness of the silicone tube needs to be tested, the operator first passes the silicone tube through the simulation mechanism 5, and then the operator holds the two ends of the silicone tube and inserts them into the two air holes of the air tightness tester 2, and at the same time places the silicone tube inside the dynamic mechanism 4. The curvature of the corresponding position of the silicone tube is then changed back and forth through the dynamic mechanism 4, and the simulation mechanism 5 is used to continuously press and rub the silicone tube, thereby simulating the complex working conditions of the silicone tube when in use.

[0036] After a period of time, the L-shaped frame 3 is rotated to a certain angle, and then the simulation mechanism 5 and the dynamic mechanism 4 are used to simulate different positions of the silicone tube again. After a certain number of changes, gas is introduced into the silicone tube through the air tightness tester 2, and the air pressure in the silicone tube is monitored in real time. If the air pressure drops by more than the threshold within the set time, the air tightness of the silicone tube is judged to be unqualified, otherwise it is qualified.

[0037] See Figure 1 and Figure 3 The dynamic mechanism 4 includes two symmetrically arranged front-to-back shear plates 41 hinged to the upper end of the vertical section of the L-shaped frame 3. Two clamping rollers 43 for clamping the silicone tube are provided on the left side of the shear plate 41 through a moving component 42.

[0038] See Figure 1 、 Figure 2 and Figure 3 The vertical section of the L-shaped frame 3 is a columnar structure, and the horizontal section of the L-shaped frame 3 is a square rod structure.

[0039] See Figure 1 、 Figure 3 、 Figure 6 and Figure 7 The simulation mechanism 5 includes a T-shaped block 51 that slides on the horizontal section of the L-shaped frame 3 along its length direction. A rectangular through groove is opened on the left side of the horizontal section of the L-shaped frame 3. The vertical section of the T-shaped block 51 slides inside the rectangular through groove. A fixed ring frame 52 is fixedly installed on the horizontal section of the T-shaped block 51. A pressing roller 54 and a brush block 55 are arranged inside the fixed ring frame 52 through a rotating component 53.

[0040] When the operator connects the silicone tube to the air tightness tester 2, the silicone tube passes through the fixed ring frame 52, and the silicone tube is located between the two clamping rollers 43 on the same shear plate 41, so that the two clamping rollers 43 on the same shear plate 41 can drive the silicone tube to move by clamping it, and at the same time, the fixed ring frame 52 can drive the pressing roller 54 and the brush block 55 to rotate around the silicone tube through the rotating component 53, thereby continuously pressing and rubbing the silicone tube, thereby simulating the actual usage conditions for air tightness testing.

[0041] See Figure 1 、 Figure 3 and Figure 4 The moving assembly 42 includes two symmetrically arranged moving blocks 421 sliding on the shear plate 41 along its length direction. The moving blocks 421 are rotatably connected to the clamping rollers 43 at corresponding positions, and a coil spring is provided between the right moving block 421 and the corresponding shear plate 41.

[0042] See Figure 3 and Figure 4A fixed rod 44 is fixedly installed on the lower side of the moving block 421 located on the right, and two support arms 441 arranged symmetrically front and back are fixedly installed on the horizontal section of the L-shaped frame 3. A wedge block 442 for pushing the fixed rod 44 is fixedly installed on the upper end of the support arm 441.

[0043] In the initial state, the left ends of the two scissor plates 41 are in a state of being away from each other, so that the scissor plates 41 drive the fixed rod 44 to contact the wedge block 442 through the moving block 421 thereon, so that the wedge block 442 pushes the fixed rod 44 to the right along the length direction of the corresponding scissor plate 41, and the fixed rod 44 drives the corresponding moving block 421 to move synchronously with the clamping roller 43, and makes the coil spring in a compressed state.

[0044] See Figure 4 A synchronous plate 422 is rotatably provided on the lower side of the scissor plate 41 , and push-pull plates 423 are hinged at both ends of the synchronous plate 422 , and the push-pull plates 423 are hinged to the moving blocks 421 at corresponding positions.

[0045] When the right moving block 421 is limited by the wedge block 442 at the corresponding position, the right moving block 421 pushes the synchronous plate 422 at the corresponding position to rotate through the push-pull plate 423 connected to it, and the rotating synchronous plate 422 pushes the left moving block 421 to move left through another push-pull plate 423 thereon, so that the two moving blocks 421 and the clamping roller 43 on the same shear plate 41 move synchronously in opposite directions, and then in the initial state, the two clamping rollers 43 on the same shear plate 41 are in a position away from each other, so that the silicone tube can be placed between the two clamping rollers 43 on the same shear plate 41.

[0046] See Figure 3 、 Figure 6 and Figure 7 The rotating assembly 53 includes a rotating cylinder 531 rotatably arranged on the inner side of the fixed ring frame 52, and a slider No. 1 532 and a slider No. 2 533 are relatively arranged and slidingly arranged along the radial direction of the rotating cylinder 531. The end of the slider No. 1 532 close to the axis of the rotating cylinder 531 is rotatably connected to the pressing roller 54, and the end of the slider No. 2 533 close to the axis of the rotating cylinder 531 is fixedly connected to the brush block 55.

[0047] Continue reading Figure 3 、 Figure 6 and Figure 7 , the ends of the No. 1 slider 532 and the No. 2 slider 533 away from the axis of the rotating cylinder 531 are both slidably provided with a guide rod 534, and the guide rod 534 slides along the radial direction of the rotating cylinder 531. Push springs are provided between the No. 1 slider 532, the No. 2 slider 533 and the corresponding guide rod 534, and a flower-shaped track groove 535 is opened on the inner wall of the fixed ring frame 52, and the guide rod 534 is slidably connected to the inside of the flower-shaped track groove 535.

[0048] It should be noted that if Figure 6 As shown, a rotating motor is fixedly mounted on the horizontal section of the T-shaped block 51, a driving gear is fixedly mounted on the output shaft of the rotating motor, a passive gear meshing with the driving gear is fixedly mounted on the outer side of the rotating cylinder 531, and two limit plates symmetrically arranged front to back are fixedly mounted on the inner side of the rotating cylinder 531. A through hole is opened at the axis of the limit plate for the silicone tube to pass through, and the diameter of the through hole is slightly larger than the diameter of the silicone tube.

[0049] When the silicone tube is inserted into the interior of the fixed ring frame 52, the silicone tube is simultaneously located inside the through hole of the limit plate, so that the part of the silicone tube located between the two limit plates is located between the pressing roller 54 and the brush block 55. In the initial state, the two guide rods 534 slide along the flower-shaped track groove 535 to a position away from the axis of the fixed ring frame 52, so that the guide rod 534 drives the pressing roller 54 and the brush block 55 through the No. 1 slider 532 and the No. 2 slider 533 respectively so as not to contact the silicone tube.

[0050] See Figure 1 、 Figure 3 and Figure 6 The left side of the scissor plate 41 is hinged with a linkage plate 411, and the left side of the fixed ring frame 52 is fixedly installed with a support plate 412. The left ends of the two linkage plates 411 are hinged to the support plate 412. The left end of the horizontal section of the L-shaped frame 3 is fixedly installed with a driving cylinder 413, and the telescopic section of the driving cylinder 413 is fixedly connected to the vertical section of the T-shaped block 51.

[0051] When the silicone tube is arranged between the inside of the fixed ring frame 52 and the clamping roller 43 at the same time, the rotating motor is started to drive the rotating cylinder 531 to rotate, and at the same time the telescopic section of the driving cylinder 413 is reciprocated and extended. The rotating cylinder 531 drives the pressing roller 54 and the brush block 55 to rotate around the silicone tube through the No. 1 slider 532 and the No. 2 slider 533, and at the same time drives the two guide rods 534 to move along the trajectory of the flower-shaped track groove 535, so that the flower-shaped track groove 535 pushes and pulls the two guide rods 534 reciprocatingly along the radial direction of the rotating cylinder 531.

[0052] When the guide rod 534 moves toward the axial direction of the fixed ring frame 52, the guide rod 534 pushes the slider 532 and the slider 533 to move synchronously through the push spring, so that the slider 532 and the slider 533 respectively drive the pressing roller 54 and the brush block 55 to press against the outer wall of the silicone tube.

[0053] Then continue to rotate the rotating cylinder 531, so that the guide rod 534 continues to move toward the axial direction of the fixed ring frame 52, and by compressing the corresponding push spring, increase the pressure of the pressing roller 54 and the brush block 55 against the outer wall of the silicone tube. Then, the patterned track groove 535 drives the pressing roller 54 and the brush block 55 to move away from the axial direction of the fixed ring frame 52. Through the continuous reciprocating movement of the pressing roller 54 and the brush block 55, the roller pressing effect and the friction of the instrument on the silicone tube are simulated.

[0054] See Figure 7 and Figure 8 Two front-to-back symmetrical brush plates 551 are arranged at one end of the No. 2 slider 533 close to the axis of the rotating cylinder 531. The brush plates 551 are hinged to the No. 2 slider 533 through a number of hinged plates 552 arranged parallel to each other. A torsion spring is provided between the hinged plate 552 and the No. 2 slider 533. Specifically, one end of the torsion spring is fixedly connected to the No. 2 slider 533, and the other end is fixedly connected to the hinged plate 552.

[0055] It should be noted that several mutually parallel hinge plates 552, the second slider 533 and the corresponding brush plates 551 form a parallelogram structure, so that the brush plate 551 is always parallel to the end face of the second slider 533 close to the axis of the rotating cylinder 531.

[0056] In the initial state, the torsion spring is in a torsional deformation state, and the reverse torque generated by the deformation of the torsion spring generates a force on the hinge plate 552 to move closer to the brush plate 551, so that the hinge plate 552 drives the side of the brush plate 551 to rest against the side of the brush block 55, and at this time the hinge plate 552 is in an inclined posture.

[0057] When the second slider 533 moves toward the axial position of the rotating cylinder 531, the second slider 533 drives the brush plate 551 to press against the outer wall of the silicone tube through the hinge plate 552. Then, the second slider 533 continues to move and pushes the brush plate 551 away from the second slider 533 through the hinge plate 552, so that the brush plate 551 rubs the silicone tube along the axial direction of the silicone tube, which more realistically reproduces the complex working conditions of the silicone tube under friction, and effectively improves the accuracy of the detection results.

[0058] See Figure 4 and Figure 5 A locking rod 414 is fixedly installed on the shear fork plate 41, and both ends of the locking rod 414 are dome structures. A through hole for the locking rod 414 to pass through is provided on the moving block 421, and locking holes are provided on the rotating shaft of the clamping roller 43 at equal intervals along its circumference, and the ends of the locking holes are chamfered.

[0059] In the initial state, the moving block 421 drives the locking hole on the clamping roller 43 not to contact the locking rod 414, so that the locking rod 414 does not limit the rotation angle of the clamping roller 43. At this time, the clamping roller 43 is in a free rotation state, which facilitates the silicone tube to adjust its position between the clamping rollers 43.

[0060] When the telescopic section of the driving cylinder 413 contracts, the driving cylinder 413 drives the T-shaped block 51 to move leftward along the horizontal section of the L-shaped frame 3. The T-shaped block 51 drives the silicone tube at the corresponding position to move leftward synchronously through the fixed ring frame 52 and the rotating cylinder 531. The fixed ring frame 52 pushes the left ends of the two linkage plates 411 to the left through the support plate 412, so that the two linkage plates 411 respectively pull the two scissor plates 41 to move closer to each other synchronously.

[0061] When the two scissor plates 41 approach each other, the moving blocks 421 thereon are driven to move synchronously, so that the wedge block 442 no longer blocks the fixed rod 44, and the coil spring pushes the right moving block 421 along the length direction of the corresponding scissor plate 41 through its own elastic force, so that the two moving blocks 421 and the two clamping rollers 43 on the same scissor plate 41 approach each other until they are clamped on the outer surface of the silicone tube.

[0062] When the two moving blocks 421 and the two clamping rollers 43 on the same shear plate 41 approach each other, the locking rod 414 passes through the through hole on the moving block 421 and is inserted into the corresponding locking hole of the clamping roller 43, thereby locking the clamping roller 43 and the moving block 421 together, so that the clamping roller 43 no longer rotates freely.

[0063] Then, the shear plates 41 that continue to approach each other at the left ends squeeze the corresponding part of the silicone tube through the two clamping rollers 43, so that the curvature of the squeezed part of the silicone tube gradually becomes smaller. Then, when the telescopic section of the driving cylinder 413 is extended, the principle is the same as above, so that the curvature of the squeezed part of the silicone tube gradually becomes larger, and then by dynamically changing the curvature of the silicone tube, the process of accelerated aging due to repeated bending is effectively reproduced, further making the detection more realistic.

[0064] See Figure 2 A driven bevel gear 31 is fixedly mounted on the outside of the vertical section of the L-shaped frame 3, a rotating motor 32 is fixedly mounted on the inside of the pedestal 1, and a driving bevel gear 33 meshing with the driven bevel gear 31 is fixedly mounted on the output shaft of the rotating motor 32.

[0065] After the silicone tube is bent, squeezed and rubbed back and forth for a period of time, the two shear plates 41, the pressing roller 54 and the brush block 55 are moved to the initial state, and then the rotating motor 32 is started. The rotating motor 32 drives the L-shaped frame 3 to rotate through the coordinated transmission from the active bevel gear 33 to the driven bevel gear 31, so that the L-shaped frame 3 drives the clamping roller 43, the pressing roller 54 and the brush block 55 to move synchronously, so as to facilitate the reciprocating bending, squeezing and rubbing of other positions of the silicone tube again.

[0066] After the L-shaped frame 3 rotates a certain number of times, gas is passed into the silicone tube through the air tightness tester 2, and the air pressure in the silicone tube is monitored in real time. If the air pressure drops by more than a threshold within a set time, the silicone tube is judged to be unqualified for air tightness, otherwise it is qualified.

[0067] See Figures 1 to 8 When testing the air tightness of the silicone tube, the present invention includes the following steps: In the first step, the operator connects the silicone tube to the air tightness tester 2, so that the silicone tube passes through the through hole of the limit plate, and the silicone tube is located between the two clamping rollers 43 on the same shear plate 41.

[0068] The second step is to start the rotating motor and reciprocate the telescopic section of the driving cylinder 413, so that the pressing roller 54 and the brush block 55 intermittently press against the outer wall of the silicone tube, and make the pressing roller 54 and the brush block 55 rotate around the silicone tube with variable force, simulating the roller pressing action and the friction of the instrument on the silicone tube.

[0069] In the third step, the No. 2 slider 533 drives the brush plate 551 to rest against the outer wall of the silicone tube through the hinge plate 552, and then the No. 2 slider 533 continues to move and pushes the brush plate 551 away from the No. 2 slider 533, so that the brush plate 551 rubs the silicone tube along the axial direction, which more realistically reproduces the complex working conditions of the silicone tube under friction.

[0070] In the fourth step, the driving cylinder 413 drives the two shear plates 41 to move closer to and away from each other synchronously, so that the clamping roller 43 reciprocates and squeezes the corresponding part of the silicone tube. By dynamically changing the curvature of the silicone tube, the process of repeated bending and accelerated aging is effectively reproduced, further making the detection more realistic.

[0071] In the fifth step, the two shear plates 41, the pressing roller 54 and the brush block 55 are moved to the initial state, and then the rotating motor 32 is started to drive the clamping roller 43, the pressing roller 54 and the brush block 55 to move synchronously through the L-shaped frame 3, so as to perform reciprocating bending, squeezing and friction on other positions of the silicone tube again.

[0072] In the sixth step, after the L-shaped frame 3 rotates a certain number of times, gas is passed into the silicone tube through the air tightness tester 2, and the air pressure in the silicone tube is monitored in real time. If the air pressure drops by more than a threshold within the set time, the silicone tube is judged to be unqualified for air tightness, otherwise it is qualified.

[0073] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations 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 orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0074] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature designated as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0075] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0076] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A silicone tube performance testing device, comprising a base, on the upper side of which an airtightness detector is fixedly mounted, characterized in that: An L-shaped frame is rotatably mounted on the left end of the upper side of the pedestal. The L-shaped frame houses a dynamic mechanism for continuously changing the curvature of the silicone tube, as well as a simulation mechanism for simulating the working conditions of the silicone tube during use. The dynamic mechanism includes two symmetrically arranged shear plates hinged to the upper end of the vertical section of the L-shaped frame, and two clamping rollers for clamping the silicone tube are provided on the left side of the shear plates through a moving component; The simulation mechanism includes a T-shaped block sliding on the horizontal section of the L-shaped frame along the length direction thereof, a fixed ring frame is fixedly installed on the horizontal section of the T-shaped block, and a pressing roller and a bristle block are arranged inside the fixed ring frame through a rotating assembly; The two shear plates move back and forth in synchronous directions, causing the clamping rollers to push the corresponding parts of the silicone tube to squeeze back and forth, thereby continuously changing the curvature of the silicone tube. The rotating assembly drives the pressing roller and the brush block to rotate around the silicone tube, simulating the pressure and friction that the silicone tube is subjected to during use.

2. A silicone tube performance detection device according to claim 1, characterized in that: A driven bevel gear is fixedly installed on the outer side of the vertical section of the L-shaped frame, a rotating motor is fixedly installed on the inner side of the pedestal, and a driving bevel gear meshing with the driven bevel gear is fixedly installed on the output shaft of the rotating motor.

3. A silicone tube performance detection device according to claim 1, characterized in that: A linkage plate is hinged on the left side of the scissor plate, a support plate is fixedly installed on the left side of the fixed ring frame, and the left ends of the two linkage plates are hinged to the support plate.

4. A silicone tube performance detection device according to claim 1, characterized in that: The moving assembly includes two symmetrically arranged moving blocks sliding on the shear plate along its length direction. The moving blocks are rotationally connected to the clamping rollers at corresponding positions. A coil spring is provided between the right moving block and the corresponding shear plate.

5. A silicone tube performance detection device according to claim 4, characterized in that: A synchronous plate is rotatably provided on the lower side of the scissor plate, and push-pull plates are hinged at both ends of the synchronous plate, and the push-pull plates are hinged to the moving blocks at corresponding positions.

6. A silicone tube performance detection device according to claim 4, characterized in that: A locking rod is fixedly installed on the shear plate, a through hole for the locking rod to pass through is provided on the moving block, and locking holes are opened on the rotating shaft of the clamping roller at equal intervals along its circumference.

7. A silicone tube performance detection device according to claim 4, characterized in that: A fixing rod is fixedly installed on the lower side of the moving block located on the right part, and two support arms arranged symmetrically front and back are fixedly installed on the horizontal section of the L-shaped frame. A wedge block for pushing the fixing rod is fixedly installed on the upper end of the support arm.

8. The silicone tube performance detection device according to claim 1, characterized in that: The rotating assembly includes a rotating cylinder rotatably arranged on the inner side of a fixed ring frame, and a slider No. 1 and a slider No. 2 are relatively arranged and slidingly arranged along the radial direction of the rotating cylinder. The end of the slider No. 1 close to the axis of the rotating cylinder is rotatably connected to the pressing roller, and the end of the slider No. 2 close to the axis of the rotating cylinder is fixedly connected to the brush block.

9. A silicone tube performance detection device according to claim 8, characterized in that: The ends of the No. 1 and No. 2 sliders away from the axis of the rotating cylinder are both slidably provided with guide rods, and push springs are provided between the No. 1 and No. 2 sliders and the corresponding guide rods. A flower-shaped track groove is opened on the inner wall of the fixed ring frame, and the guide rods are slidably connected inside the flower-shaped track groove.

10. The silicone tube performance detection device according to claim 8, characterized in that: The end of the second slider close to the axis of the rotating cylinder is provided with two front-to-back symmetrical brush plates, and the brush plates are hinged to the second slider through a plurality of hinge plates arranged parallel to each other.

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