Testing machine and testing method for detecting bonding performance of capsule skin

Abstract

The invention discloses a testing machine and a testing method for detecting the bonding performance of a capsule skin, the testing machine comprises a steel ring driving mechanism, the steel ring driving mechanism drives a steel ring to stretch into and out of the capsule skin in a reciprocating manner to simulate the use condition of the capsule skin, and the driving torque of the steel ring driving mechanism is adjustable. The abrasion layering degree of the bag skin under different steel ring driving torques can be detected conveniently; the steel ring driving mechanism is arranged to drive the steel ring to reciprocate in the bag skin, the wear condition of the bag skin under the actual working condition is simulated by rubbing the wall face of the bag skin through the steel ring, and the steel ring driving mechanism is adjusted to drive the movement stroke of the steel ring in the bag skin so as to change the driving torque of the steel ring. According to the layering condition of the bag skin after different driving moment tests, the influence of abrasion caused by different steel ring driving moments on the bag skin bonding performance is judged, the range of the abrasion moment capable of being borne by the bag skin is evaluated, detection of the bag skin bonding performance is achieved, and a test support is provided for production, research and development of the bag skin.

Description

Technical Field

[0001] The invention relates to the technical field of material mechanical property testing, and in particular to a testing machine and a testing method for detecting the adhesion performance of a capsule skin. Background Art

[0002] With the increasing popularity of electric vehicles, their heavier weight and unique driving characteristics pose even more stringent challenges to suspension systems. Air suspension, with its unique advantages, has become a key technology for addressing these challenges. Air suspension systems are complex structures, and as the core component of air springs, the performance of the bladder is crucial. The adhesion between the inner and outer layers of the bladder is a key performance indicator that attracts considerable attention.

[0003] At present, the quality inspection of hollow spring capsule skin is generally aimed at fatigue life and peeling test. The existing testing equipment cannot effectively detect the adhesion performance between the inner and outer layer materials of the capsule skin. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, a testing machine and a testing method for detecting the adhesion performance of the bladder skin are proposed, which solves the problem that the existing testing equipment in the above background technology cannot effectively detect the adhesion performance between the inner and outer layer materials of the bladder skin.

[0005] To achieve the above objectives, the present invention proposes the following technologies: A testing machine for detecting the adhesion performance of a bladder skin includes a steel ring driving mechanism, which drives the steel ring to reciprocate in and out of the bladder skin to simulate the working conditions of the bladder skin. The driving torque of the steel ring driving mechanism can be adjusted, thereby facilitating the detection of the degree of wear and stratification of the bladder skin under different steel ring driving torques.

[0006] Furthermore, it also includes an expansion mechanism, which is used to stretch and expand the opening of the bladder skin so that the steel ring driving mechanism can drive the steel ring to extend into the interior of the bladder skin.

[0007] Furthermore, the expansion mechanism includes a plurality of stretching jaws distributed in a circular array. After the stretching jaws clamp the bladder skin, they move horizontally to expand the opening size of the end of the bladder skin, making it easier for the steel ring to extend into the bladder skin.

[0008] Furthermore, the stretching clamp includes an inner hook mouth and an outer pressure block. After the outer pressure block is driven by the first telescopic cylinder to clamp the bag skin near the inner hook mouth, the second telescopic cylinder connected to the inner hook mouth drives the stretching clamp and the bag skin clamped by it to move outward to expand the bag skin opening.

[0009] Furthermore, the steel ring driving mechanism includes a driving unit and a fixed shaft for fixing the steel ring. The fixed shaft is in transmission connection with the driving unit, and the driving unit drives the fixed shaft to reciprocate to enable the steel ring to be extended into and removed from the bag skin.

[0010] Furthermore, it also includes a clamping mechanism arranged opposite to the expansion mechanism, and the clamping mechanism clamps the end of the bladder skin away from the expansion mechanism to prevent the bladder skin from being driven to flanging when the steel ring is removed.

[0011] Furthermore, the clamping mechanism includes two clamping heads arranged opposite to each other and a core shaft which can be inserted into the bladder skin. The two clamping heads are close to each other and press the bladder skin against the periphery of the core shaft to fix the end of the bladder skin.

[0012] On the other hand, the present invention also proposes a test method for detecting the adhesion performance of the bladder skin, which is suitable for the above-mentioned testing machine for detecting the adhesion performance of the bladder skin, including: setting the stroke of the steel ring driving mechanism to drive the steel ring to move to control the steel ring driving torque, the steel ring driving mechanism drives the steel ring to extend into the interior of the bladder skin under the set movement stroke, the steel ring driving mechanism drives the steel ring to extend into and return to the interior of the bladder skin for multiple reciprocating movements, the steel ring driving mechanism drives the steel ring to detach from the bladder skin, remove the bladder skin and observe the degree of deformation of the bladder skin to determine whether delamination or tearing occurs.

[0013] Furthermore, the stroke of the steel ring driven by the steel ring driving mechanism is kept unchanged so that the steel ring driving torque remains unchanged. The steel ring driving mechanism drives the steel ring to perform the above-mentioned ring test on the same bladder skin of different diameters in turn, and observes the degree of deformation of the same bladder skin of different diameters under the fixed steel ring driving torque to determine whether delamination or tearing occurs.

[0014] Furthermore, the stroke of the steel ring driven by the steel ring driving mechanism is kept unchanged so that the steel ring driving torque remains unchanged. Under the fixed steel ring movement stroke, the steel ring driving mechanism drives the steel ring to perform the above-mentioned ring test on different types of bladder skins with the same diameter in turn, and observes the degree of deformation of different types of bladder skins under the fixed steel ring driving torque to determine whether delamination or tearing occurs.

[0015] Compared with the prior art, the comprehensive effects brought by the present invention include: This application sets up a steel ring driving mechanism to drive the steel ring to reciprocate in the bladder skin, and simulates the wear of the bladder skin under actual working conditions by the steel ring scratching the wall of the bladder skin. The steel ring driving mechanism is adjusted to drive the movement stroke of the steel ring in the bladder skin to change the steel ring driving torque. According to the stratification of the bladder skin after different driving torque tests, the impact of the wear caused by different steel ring driving torques on the adhesion performance of the bladder skin is judged, the range of wear torque that the bladder skin can withstand is evaluated, the adhesion performance of the bladder skin is tested, and experimental support is provided for the production and development of the bladder skin. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 It is a front view schematic diagram of the internal structure of an embodiment of the present invention; Figure 3 This is a schematic diagram of the housing structure of an embodiment of the present invention; Figure 4 This is a schematic diagram of the expansion mechanism structure according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the tensile clamping structure according to an embodiment of the present invention; Figure 6 This is a structural diagram of a steel ring drive mechanism according to an embodiment of the present invention; Figure 7 Schematic diagram of the clamping mechanism structure according to an embodiment of the present invention.

[0017] Legend: 1. Shell; 2. Clamping mechanism; 3. Expansion mechanism; 4. Fourth telescopic cylinder; 5. Steel ring drive mechanism; 6. Placement hole; 7. Bag skin; 8. Inner hook mouth; 9. Upper partition plate; 10. Stretching clamp; 11. External pressure block; 12. Second telescopic cylinder; 13. Slider; 14. Sliding plate; 15. First telescopic cylinder; 16. Optical axis; 17. Fifth telescopic cylinder; 18. Steel ring; 19. Fixed axis; 20. Fixed plate; 21. Connecting plate; 22. Clamping head; 23. Core shaft; 24. U-shaped seat; 25. Third telescopic cylinder; 26. Optical axis; 27. Control unit; 28. Connecting plate. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts are within the scope of protection of the present invention.

[0019] In this document, the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", and "top" 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. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0020] like Figures 1 to 7As shown, a testing machine for detecting the adhesion performance of the bladder skin includes a steel ring driving mechanism 5, which drives the steel ring 18 to reciprocate in and out of the bladder skin 7 to simulate the use condition of the bladder skin 7. The driving torque of the steel ring driving mechanism 5 can be adjusted, which makes it easier to detect the degree of wear and stratification of the bladder skin 7 under different steel ring driving torques.

[0021] Through the above-mentioned setting, the steel ring driving mechanism 5 drives the steel ring 18 to reciprocate in the bladder skin 7. The steel ring 18 scratches the wall of the bladder skin 7 to simulate the wear of the bladder skin 7 under actual working conditions. The steel ring driving mechanism 5 is adjusted to drive the steel ring 18 to move in the bladder skin 7 to change the steel ring driving torque. According to the stratification of the bladder skin 7 after different driving torque tests, the influence of the wear caused by different steel ring driving torques on the adhesion performance of the bladder skin 7 is judged, the range of wear torque that the bladder skin 7 can withstand is evaluated, and the adhesion performance of the bladder skin 7 is tested to provide experimental support for the production and research and development of the bladder skin 7.

[0022] The testing machine for detecting the adhesive properties of the bladder skin of this embodiment further includes an expansion mechanism 3 , which is used to stretch and expand the opening of the bladder skin 7 so that the steel ring driving mechanism 5 can drive the steel ring 18 to extend into the interior of the bladder skin 7 .

[0023] The bladder skin 7 used for processing the air spring is cylindrical before processing, and its diameter is usually small. In order to facilitate the steel ring 18 to extend into the bladder skin 7 and rub against the inner wall of the bladder skin 7, an expansion mechanism 3 is provided to expand the end opening of the bladder skin 7. After the steel ring 18 enters through the above-mentioned large-diameter opening, it stretches and rubs other smaller-diameter positions of the bladder skin 7 to simulate the wear conditions of the air spring during actual use.

[0024] Preferably, the expansion mechanism 3 is located below the bladder skin 7 and expands the bladder skin 7 from the bottom, so that the steel ring driving mechanism 5 drives the steel ring 18 to extend into the bladder skin 7 from below.

[0025] Specifically, the expansion mechanism 3 includes a plurality of stretching jaws 10 distributed in a circular array. After the stretching jaws 10 clamp the bladder skin 7, they move horizontally to expand the opening size of the end of the bladder skin 7 to facilitate the steel ring 18 to extend into the bladder skin 7.

[0026] A plurality of stretching jaws 10 distributed along the circumferential direction are provided so that there is sufficient space between the stretching jaws 10 to accommodate the up and down reciprocating movement of the steel ring 18, thereby realizing the wear test of the bladder skin 7. The stretching jaws 10 slide back and forth radially along the enclosed circle, thereby clamping the bottom edge of the bladder skin 7 and driving the bladder skin 7 to stretch radially to achieve diameter expansion, making it easier for the steel ring 18 to extend into the bladder skin 7.

[0027] In this embodiment, the testing machine also includes a frame mechanism, which is used to support and protect each working mechanism. The frame mechanism includes a shell 1. Two layers of partition plates are provided in the middle of the shell 1. A sandwich is formed between the partition plates. The stretching clamp 10 is installed in the sandwich. The upper partition plate 9 is provided with a placement hole 6 for placing the bag skin 7 on the stretching clamp 10. The lower partition plate is provided with a lifting hole for the steel ring 18 to pass through. The steel ring drive mechanism 5 is installed in the chamber below the lower partition plate. The various spaces separated by the shell 1 structure and the partition plates separate and shield the various working mechanisms.

[0028] In the testing machine for detecting the adhesive properties of the bag skin of this embodiment, the stretching clamp 10 includes an inner hook mouth 8 and an outer pressure block 11. After the outer pressure block 11 is driven by the first telescopic cylinder 15 to clamp the bag skin 7 near the inner hook mouth 8, the second telescopic cylinder 12 connected to the inner hook mouth 8 drives the stretching clamp 10 and the bag skin 7 clamped by it to move outward to expand the opening of the bag skin 7.

[0029] Through the above arrangement, the second telescopic cylinder 12 extends to drive the inner hook mouth 8 closer, and multiple inner hook mouths 8 form a circle with a diameter matching the inner diameter of the bag skin 7, and the bag skin 7 is placed outside the above circle. Then the first telescopic cylinder 15 extends to drive the outer pressure block 11 close to the inner hook mouth 8 to clamp the bag skin 7 from the outside, and then the second telescopic cylinder 12 is controlled to contract, driving the inner hook mouth 8 and the outer pressure block 11 in the clamping state and the first telescopic cylinder 15 to move radially outward, thereby expanding the opening diameter of the bag skin 7.

[0030] Specifically, the side of the inner hook mouth 8 that contacts the bag skin 7 is arranged in an arc shape, thereby improving the fit between the inner hook mouth 8 and the inner wall of the bag skin 7 and improving the clamping stability. Preferably, the top of the inner hook mouth 8 is provided with a protrusion facing the side of the bag skin 7, further improving the pressing and clamping effect of the bag skin 7; correspondingly, the surface of the side of the outer pressure block 11 that contacts the bag skin 7 is an arc surface that matches the inner hook mouth 8, and the height of the outer pressure block 11 is lower than the protrusion to facilitate the formation of a fit, and the two arc surfaces clamp the bag skin 7 from the inside and outside, thereby improving the clamping stability.

[0031] Preferably, grooves are provided on the arc surfaces of the inner hook mouth 8 and the outer pressure block 11 respectively, and the friction between the arc surface and the surface of the bag skin 7 is enhanced by the groove structure.

[0032] In this embodiment, the testing machine is also provided with a control unit 27, which controls the telescopic action of each telescopic cylinder through the control unit 27, thereby realizing the stretching and expansion of the bladder skin 7, as well as the control of the movement of the steel ring 18 in and out, and the second telescopic cylinder 12 that drives the stretching jaws 10 and the bladder skin 7 to be stretched is connected to the control unit 27 by signal, and the driving unit of the steel ring driving structure 5 is connected to the control unit 27 by signal. The control unit 27 controls the distance of the stretching movement of the bladder skin 7 driven by the second telescopic cylinder 12, that is, adjusts the expansion radius of the opening at the bottom end of the bladder skin 7, and realizes the adjustment of the stretching torque of the second telescopic cylinder 12, thereby facilitating the detection of the stratification of the bladder skin 7 under different stretching torques, and then obtaining the limit value of the stretching torque that the bladder skin 7 can withstand, providing a reference for the improvement of the production process of the bladder skin 7.

[0033] Specifically, when the second telescopic cylinder 12 drives the bladder skin 7 to reach the set expansion diameter, the second telescopic cylinder 12 reads the tensile torque parameter at this time and transmits the value to the control unit 27 for display and storage, so that the staff can record the delamination and tearing of the bladder skin 7 under different tensile torques, thereby obtaining the limit value as a reference for research and development.

[0034] In the testing machine for detecting the adhesive properties of the bag skin of this embodiment, the inner hook mouth 8 is fixedly installed at the end of the sliding plate 14, the first telescopic cylinder 15 is located above the sliding plate 14, and the sliding plate 14 is fixedly connected to the output end of the second telescopic cylinder 12, so that the second telescopic cylinder 12 drives the stretching clamp 10 to move as a whole.

[0035] Specifically, the inner hook mouth 8 is arranged perpendicular to the sliding plate 14, the first telescopic cylinder 15 is fixed on the sliding plate 14, and a guide rail is provided above the sliding plate 14. The corresponding outer pressure block 11 is provided with a guide groove. The guide rail and the guide groove cooperate to guide the radial movement of the outer pressure block 11 along the bag skin 7, thereby improving the alignment effect with the inner hook mouth 8; the second telescopic cylinder 12 drives the sliding plate 14 and the first telescopic cylinder 15 above it, as well as the stretching claw 10, to move radially along the bag skin 7, thereby achieving stretching or resetting of the bag skin 7, thereby facilitating the detection of the bonding performance of the bag skin 7.

[0036] In this embodiment, a slide rail is fixedly connected to the bottom of the sliding plate 14, and the slide rail is slidably connected to the slider 13. The slider 13 is fixedly installed above the fixed seat. The second telescopic cylinder 12 is telescopic to drive the sliding plate 14 and the fixed seat to slide relative to each other.

[0037] Specifically, the slide rail is slidably connected in the slide groove opened at the top of the slider 13, the fixed seat is fixedly connected to the end of the second telescopic cylinder 12, and the output end of the second telescopic cylinder 12 passes through the fixed seat and reciprocates and telescopes under the slider 13 and the slide rail. A connecting plate 28 is provided on one side of the slide rail, and the two ends of the connecting plate 28 are respectively fixedly connected to the slide rail and the output end of the second telescopic cylinder 12. Through the above structure, the driving effect of the second telescopic cylinder 12 on the slide rail and the sliding plate 14 is realized, and the slide rail slider 13 structure guides the movement of the sliding plate 14.

[0038] Preferably, the fixed seat is fixedly installed below the lower partition plate, and two sliders 13 are provided along the radial direction of the bag skin 7. The two sliders 13 are fixedly connected to the upper surface of the lower partition plate. A sliding groove is provided on the corresponding connecting plate 28 on the lower partition plate for the connecting plate 28 to reciprocate and drive the sliding plate 14 and the stretching clamp 10 closer to or away from the bag skin 7.

[0039] In the testing machine for detecting the adhesion performance of the bladder skin of this embodiment, the steel ring driving mechanism 5 includes a driving unit and a fixed shaft 19 for fixing the steel ring 18. The fixed shaft 19 is connected to the driving unit in a transmission manner. The driving unit drives the fixed shaft 19 to reciprocate to realize the extension and removal of the steel ring 18 in the bladder skin 7.

[0040] Specifically, the steel ring 18 is detachably connected to the top end of the fixed shaft 19, and the steel ring 18 and the fixed shaft 19 are coaxially installed. The driving unit drives the fixed shaft 19 to rise and fall in the vertical direction, thereby realizing that the steel ring 18 changes its height between several stretching jaws 10 to extend into the bag skin 7 or be pulled out from the bag skin 7.

[0041] In this embodiment, the steel ring driving mechanism 5 also includes a guide unit, which includes a guide plate fixedly connected to the fixed shaft 19. The two ends of the guide plate are respectively mounted on the optical axis 16 and slidably connected to the optical axis 16. The two optical axes 16 are fixedly connected to the driving unit through a positioning plate.

[0042] The bottom end of the fixed shaft 19 is fixedly connected to the middle part of the guide plate, and a connecting block is installed below the guide plate corresponding to the fixed shaft 19, and the connecting block is connected to the output end of the driving unit. Through the above arrangement, when the driving unit telescopes and drives the fixed shaft 19 and the steel ring 18 to move in the vertical direction, the optical axes 16 on both sides guide the guide plate respectively to avoid the steel ring 18 from deflecting during movement, resulting in uneven contact between the steel ring 18 and the inner wall of the bag skin 7, affecting the accuracy of the wear test of the bag skin 7.

[0043] Specifically, the driving unit is the fifth telescopic cylinder 17, which is connected to the control unit 27 by signal. The control unit 27 controls the fifth telescopic cylinder 17 to drive the steel ring 18 to reciprocate in the bladder skin 7, so as to facilitate the adjustment of the steel ring driving torque, thereby quantitatively evaluating the influence of the wear between the steel ring 18 and the bladder skin 7 on the adhesion performance between the materials of the various layers of the bladder skin 7 under different steel ring driving torques, and detecting the influence of the vertical force on the adhesion performance between the various layers of the bladder skin 7. Combined with the tensile torque of the driving tensile clamp 10, it provides support for the research and development of improving product performance.

[0044] The testing machine for detecting the adhesion performance of the bladder skin in this embodiment also includes a clamping mechanism 2 arranged opposite to the expansion mechanism 3. The clamping mechanism 2 clamps the end of the bladder skin 7 away from the expansion mechanism 3 to prevent the bladder skin 7 from being driven to flanging when the steel ring 18 falls out.

[0045] Its clamping mechanism 2 is located above the bladder skin 7. After the steel ring 18 extends into the bladder skin 7 to a certain depth, when it needs to be pulled out, the top of the bladder skin 7 is clamped by the clamping mechanism 2 to limit it in the vertical direction to prevent the friction between the steel ring 18 and the inner wall of the bladder skin 7 from causing the steel ring 18 to drive the bladder skin 7 to move downward, making it difficult for the steel ring 18 to come out, and affecting the reciprocating extension and removal of the steel ring 18 for wear testing.

[0046] Specifically, the clamping mechanism 2 includes two oppositely arranged clamping heads 22 and a core shaft 23 that can be inserted into the bladder skin 7. The two clamping heads 22 approach each other and press the bladder skin 7 against the periphery of the core shaft 23 to fix the end of the bladder skin 7.

[0047] After the bottom end of the core shaft 23 is inserted into the bladder skin 7, the clamping heads 22 on both sides synchronously approach the core shaft 23 to clamp the bladder skin 7 on the outer surface of the core shaft 23, thereby limiting the bladder skin 7 and facilitating the steel ring driving mechanism 5 to drive the steel ring 18 to move downward and exit from the bladder skin 7.

[0048] Preferably, the side of the clamping head 22 close to the core shaft 23 is set as an arc-shaped surface, which matches the cylindrical structure of the bladder skin 7 and cooperates with the shape of the core shaft 23 to improve the fit between the clamping head 22 and the outer wall of the bladder skin 7, ensure the clamping effect of the bladder skin 7, and achieve effective limiting.

[0049] The top end of the core shaft 23 is fixedly connected to the U-shaped seat 24, and the U-shaped seat 24 opens downward. The bottom ends of its two side plates are respectively provided with third telescopic cylinders 25 for driving the clamping head 22 to move. The two third telescopic cylinders 25 are horizontally and oppositely arranged, and the core shaft 23 is located in the middle of the two side plates, ensuring that the two clamping heads 22 synchronously approach or move away from the core shaft 23 to clamp or release the bag skin 7, so that the bag skin 7 is evenly stressed.

[0050] The clamping mechanism 2 is fixedly mounted on the top of the shell 1 , and the U-shaped seat 24 is located in a cavity above the upper partition plate 9 . The U-shaped seat 24 rises and falls in the cavity to approach or move away from the bladder skin 7 , clamping or releasing the bladder skin 7 .

[0051] Preferably, the upper portion of the U-shaped seat 24 corresponds to a core shaft 23 fixedly connected to the output end of the fourth telescopic cylinder 4, and the fourth telescopic cylinder 4 drives the U-shaped seat 24, the core shaft 23 and the clamping head 22 to upgrade synchronously to avoid affecting the placement and removal of the capsule skin 7 at the test position.

[0052] Another set of optical axes 26 is fixedly installed on the top of the U-shaped seat 24. The two optical axes 26 are symmetrically arranged on the U-shaped seat 24. The top ends of the two optical axes are respectively fixedly connected to the connecting plate 21. The middle part of the connecting plate 21 is provided with an avoidance hole for installing the fourth telescopic cylinder 4. The fourth telescopic cylinder 4 is fixedly installed with the frame of the testing machine through the fixed plate 20. The output end of the fourth telescopic cylinder 4 passes through the fixed plate 20 and extends between the optical axes 26 to connect the U-shaped seat 24. The two sides of the fixed plate 20 are respectively slidably connected to the optical axes 26 through sleeves. The optical axis 26 reciprocates in the sleeve to guide the lifting and lowering of the U-shaped seat 24.

[0053] Preferably, a limiting column passes through the fixed plate 20, and the limiting column is fixedly connected to the fixed plate 20, and its upper and lower ends extend to both sides of the fixed plate 20. The sliding stroke of the optical axis 26 in the sleeve is limited by the limiting column to prevent the connecting plate from being too low and colliding with the fixed plate 20, and to prevent the U-shaped seat 24 from being too high and colliding with the fixed plate 20, thereby avoiding damage to parts.

[0054] Based on the above-mentioned testing machine, the present invention also proposes a test method for detecting the adhesion performance of the bag skin, which specifically includes: setting the stroke of the steel ring driving mechanism 5 to drive the steel ring 18 to control the steel ring driving torque, the steel ring driving mechanism 5 drives the steel ring 18 to extend into the bag skin 7 under the set movement stroke, the steel ring driving mechanism 5 drives the steel ring 18 to extend into and return to the bag skin 7 for multiple reciprocating movements, and then the steel ring driving mechanism 5 drives the steel ring 18 to separate from the bag skin 7, remove the bag skin 7 and observe the degree of deformation of the bag skin 7 to determine whether delamination or tearing occurs.

[0055] Specifically, according to the above-mentioned testing machine, the expansion mechanism 3 includes 8 groups of stretching jaws 10 evenly distributed around the circumference, which clamp the lower end of the bladder skin 7 through the inner hook mouth 8 and the outer pressure block 11, and then the second cylinder 12 drives the stretching jaws 10 to move outward to expand the bladder skin 7 from a free state to the test diameter; the steel ring 18 is a disc part, which is installed on the top of the fixed shaft 19 through a circular waist hole. For bladder skins 7 of different specifications, the steel ring 18 can be quickly switched through the circular waist hole, and the fixed shaft 19 pushes the steel ring 18 up and down to simulate the testing process of the steel ring 18.

[0056] When it is necessary to obtain the diameter range within which the bladder skin 7 produced with the same formula has better adhesion performance, the control unit 27 is used to set the distance that the fifth telescopic cylinder 17 drives the steel ring 18 to move in the bladder skin 7, thereby keeping the driving torque of the steel ring 18 unchanged, and changing the diameter of the bladder skin 7. Under the above-mentioned set steel ring driving torque, the ring test is carried out on the above-mentioned testing machine to observe the occurrence of delamination or tearing. The steel ring driving mechanism 5 drives the steel ring 18 to carry out the above-mentioned ring test on the bladder skins 7 of different diameters and the same type, and observes the degree of deformation of the same type of bladder skins 7 of different diameters under the set steel ring 18 driving torque, and determines whether delamination or tearing occurs, so as to obtain the appropriate diameter range and provide a reference for the production and development of the bladder skin 7.

[0057] Preferably, different stretching and expansion torques can be applied to the bladder skin 7 of the same diameter and type, that is, the control unit 27 controls the second telescopic cylinder 12 to drive the bladder skin 7 to expand to a radius that changes the stretching torque, and observes whether the bladder skin 7 has stratification and tearing under different stretching torques, so as to evaluate the influence of the transverse stretching torque on the bonding properties of the materials of each layer of the bladder skin 7, and comprehensively analyze the test results of the steel ring driving torque to evaluate the influence of the diameter of the bladder skin 7 on the bonding properties of the bladder skin 7.

[0058] When it is necessary to evaluate the influence of different production formulas on the bonding performance of each layer of material in the bladder skin 7, the control unit 27 sets the distance that the fifth telescopic cylinder 17 drives the steel ring 18 to move in the bladder skin 7, thereby keeping the driving torque of the steel ring 18 unchanged. Under the set driving torque, the steel ring driving mechanism 5 drives the steel ring 18 to perform the above-mentioned ring test on different types of bladder skins 7 with the same diameter in turn, observes the degree of deformation of different types of bladder skins 7 under the set steel ring driving torque, and determines whether stratification or tearing occurs.

[0059] At the same time, during the above test process, a control group can also be set up to adjust the tensile torque of the second telescopic cylinder 12 to observe the influence of different tensile torques on the bonding performance of the bladder skin 7, and conduct a comprehensive analysis to improve the production formula of the bladder skin 7 and provide data support for research and development.

[0060] In the present invention, unless otherwise clearly stipulated and limited, the terms "installation", "setting", "connection", "fixation", "rotation" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0061] Although the embodiments of the present invention have been shown and described in detail, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A testing machine for detecting the adhesive properties of a capsule skin, characterized in that: It includes a steel ring driving mechanism, which drives the steel ring to reciprocate in and out of the bladder skin to simulate the working conditions of the bladder skin. The driving torque of the steel ring driving mechanism can be adjusted, which makes it easy to detect the degree of wear and stratification of the bladder skin under different steel ring driving torques.

2. A testing machine for detecting the adhesive properties of a capsule according to claim 1, characterized in that: It also includes an expansion mechanism, which is used to stretch and expand the opening of the bladder skin so that the steel ring driving mechanism can drive the steel ring to extend into the interior of the bladder skin.

3. A testing machine for detecting the adhesive properties of a capsule skin according to claim 2, characterized in that: The expansion mechanism includes a plurality of stretching clamps distributed in a circular array. After the stretching clamps clamp the bladder skin, they move in a horizontal direction to expand the opening size of the end of the bladder skin, making it easier for the steel ring to extend into the bladder skin.

4. A testing machine for detecting the adhesive properties of a capsule skin according to claim 3, characterized in that: The stretching clamp includes an inner hook mouth and an outer pressure block. After the outer pressure block is driven by the first telescopic cylinder to clamp the bag skin close to the inner hook mouth, the second telescopic cylinder connected to the inner hook mouth drives the stretching clamp and the bag skin clamped by it to move outward to expand the bag skin opening.

5. A testing machine for detecting the adhesive properties of a capsule cover according to claim 1, characterized in that: The steel ring driving mechanism includes a driving unit and a fixed shaft for fixing the steel ring. The fixed shaft is in transmission connection with the driving unit. The driving unit drives the fixed shaft to reciprocate to realize the extension and removal of the steel ring in the bag skin.

6. A testing machine for detecting the adhesive properties of a capsule skin according to claim 2, characterized in that: It also includes a clamping mechanism arranged opposite to the expansion mechanism, which clamps the end of the bladder skin away from the expansion mechanism to prevent the bladder skin from being driven to turn over when the steel ring is removed.

7. A testing machine for detecting the adhesive properties of a capsule cover according to claim 6, characterized in that: The clamping mechanism includes two clamping heads arranged opposite to each other and a core shaft which can be inserted into the bladder skin. The two clamping heads are close to each other and press the bladder skin against the periphery of the core shaft to fix the end of the bladder skin.

8. A test method for detecting the adhesive properties of a capsule cover, suitable for use with a test machine for detecting the adhesive properties of a capsule cover as claimed in any one of claims 1 to 7, characterized in that: The steel ring driving mechanism is used to drive the steel ring to move, and the steel ring driving mechanism drives the steel ring to extend into the bladder skin under the set movement stroke. After the steel ring driving mechanism drives the steel ring to extend into and return to the bladder skin for multiple reciprocating movements, the steel ring driving mechanism drives the steel ring to separate from the bladder skin. The bladder skin is removed and the degree of deformation of the bladder skin is observed to determine whether delamination or tearing occurs.

9. A test method for detecting the adhesive properties of a capsule cover according to claim 8, characterized in that: The stroke of the steel ring driven by the steel ring driving mechanism is kept unchanged so that the steel ring driving torque remains unchanged. The steel ring driving mechanism drives the steel ring to perform the above-mentioned ring test on the same bladder skin of different diameters in turn, and observes the degree of deformation of the same bladder skin of different diameters under the fixed steel ring driving torque to determine whether delamination or tearing occurs.

10. The test method for detecting the adhesive properties of the capsule skin according to claim 8, characterized in that: The stroke of the steel ring driven by the steel ring driving mechanism is kept unchanged so that the steel ring driving torque remains unchanged. Under the fixed steel ring movement stroke, the steel ring driving mechanism drives the steel ring to perform the above-mentioned ring test on different types of bladder skins with the same diameter in turn, and observe the degree of deformation of different types of bladder skins under the fixed steel ring driving torque to determine whether delamination or tearing occurs.

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