Air spring inner supporting ring assembling tool

Abstract

The utility model provides an air spring inner support ring assembly tool, which belongs to the technical field of inner support ring installation and comprises a bottom end assembly part, a support positioning mechanism and a top end assembly part. The bottom end assembling part is used for sealing a lower port of the airbag; the supporting and positioning mechanism comprises a supporting sleeve and a plurality of positioning rotating arms, the lower end of the supporting sleeve is fixed to the bottom end assembling part, a plurality of longitudinal gaps are formed in the periphery of the supporting sleeve, the upper ends of the positioning rotating arms are hinged to the supporting sleeve, a guide assembly is axially arranged in the supporting sleeve, and the guide assembly moves in the axial direction; the top end assembling part is arranged above the supporting sleeve and moves in the axial direction of the supporting sleeve, the top end assembling part is used for sealing an upper end opening of the air bag, and the top end assembling part is provided with a ventilation unit. According to the air spring inner supporting ring assembling tool, it is guaranteed that an inner supporting ring can be horizontally assembled in an air bag, the positioning precision is high, the inner supporting ring is prevented from deviating and shaking, and the assembling precision of products is improved.

Description

Technical Field

[0001] This utility model belongs to the field of inner support ring installation technology, and more specifically, it relates to an assembly tooling for an air spring inner support ring. Background Technology

[0002] As automotive chassis rapidly advance towards electrification and intelligentization, air suspension, with its superior comfort, is gradually becoming a mainstream configuration in the industry. Compared to traditional coil springs, air springs, utilizing the inflation and deflation characteristics of gas inside the rubber airbag, can effectively filter road bumps, providing a smoother and more comfortable travel experience for passengers. However, air springs also face durability challenges in practical applications. To enhance the durability of air spring products, the industry standard practice is to add an aluminum sleeve to the outer surface of the airbag, forming a protective barrier. At the same time, to ensure the stability of the aluminum sleeve, an inner support ring needs to be installed inside the airbag, and the three parts are tightly fastened together using a crimping machine, thereby ensuring the reliability of the entire structure.

[0003] In the design phase of the air spring, the ideal situation is that the diameter of the inflated airbag is similar to the diameter of the inner support ring. In this way, the airbag can completely wrap around the inner support ring and work together to achieve optimal performance. However, the practical problem is that when the airbag is not inflated, its diameter is much smaller than that of the inner support ring, making it impossible to smoothly insert the inner support ring into the airbag.

[0004] Current processes attempt to address this issue using a flaring machine. The process involves first inflating the airbag to create enough space to accommodate the inner support ring, then inserting the ring. Once in place, the flaring machine is operated to retract, allowing the airbag to naturally enclose the ring. However, this process suffers from difficulty in ensuring the precise positioning of the inner support ring within the airbag, leading to issues such as misalignment and wobbling. This not only affects the assembly accuracy of the product but also poses safety hazards during subsequent use. Utility Model Content

[0005] The purpose of this utility model is to provide an assembly fixture for the inner support ring of an air spring, which ensures that the inner support ring can be horizontally assembled in the airbag with high positioning accuracy, avoids the inner support ring from shifting or shaking, and improves the assembly accuracy of the product.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: to provide an assembly fixture for an air spring inner support ring, comprising:

[0007] Bottom end assembly, the bottom end assembly is used to seal the lower port of the airbag;

[0008] A support positioning mechanism includes a support sleeve and multiple positioning rotating arms. The lower end of the support sleeve is fixed to the bottom assembly part. The outer periphery of the support sleeve has multiple longitudinal slots corresponding to the multiple positioning rotating arms. The upper end of each positioning rotating arm is hinged to the support sleeve. A guide component is axially arranged inside the support sleeve. The guide component moves axially to drive the lower ends of the multiple positioning rotating arms to rotate outward synchronously from the longitudinal slots.

[0009] The top assembly is located above the support sleeve and moves along the axial direction of the support sleeve. The top assembly is used to seal the upper port of the airbag and is provided with a ventilation unit.

[0010] In one possible implementation, the lower end of the positioning arm is provided with an outwardly extending positioning claw, and the top of the positioning claw has a supporting end face for supporting the inner support ring.

[0011] In one possible implementation, the upper end of the positioning arm is provided with an inwardly extending reset claw, and the guide assembly moves upward so as to drive the lower end of the positioning arm to rotate inward from the longitudinal gap through the reset claw.

[0012] In one possible implementation, the upper end of the guide component abuts against the top mounting portion, the top mounting portion drives the guide component to move downward, and the lower end of the guide component is provided with an elastic reset member, which provides an elastic force for the guide component to move upward.

[0013] In one possible implementation, the guiding component includes:

[0014] A tapered guide block, wherein the outer diameter of the tapered guide block decreases from top to bottom, and the elastic reset member is disposed at the lower end of the tapered guide block;

[0015] A connecting part is longitudinally connected to the upper end of the tapered guide block, and the upper end of the connecting part abuts against the top mounting part.

[0016] In one possible implementation, the connecting portion includes:

[0017] A connecting rod, the lower end of which is fixedly connected to the tapered guide block;

[0018] An adjusting bolt is longitudinally threaded to the upper end of the connecting rod, and the upper end of the adjusting bolt abuts against the top mounting portion.

[0019] In one possible implementation, the lower end of the tapered guide block is provided with a downwardly extending limiting post, the upper end of the limiting post is provided with a pressure plate, the elastic reset member is a reset spring, the lower end of the reset spring is fitted onto the limiting post and abuts against the lower end face of the pressure plate, and the lower end of the reset spring abuts against the bottom end assembly.

[0020] In one possible implementation, the tapered guide block has an axially formed guide hole, the lower end of which extends to the lower end face of the limiting post. A guide post is slidably disposed within the guide hole, the lower end of which is fixed to the bottom assembly part, and the reset spring is fitted around the outer periphery of the guide post.

[0021] In one possible implementation, the bottom assembly includes:

[0022] The base plate, wherein the support sleeve is fixed to the upper end face of the base plate;

[0023] The lower assembly is fixed to the upper surface of the base plate and located outside the support sleeve. The upper port of the lower assembly is circumferentially provided with a lower sealing groove for the lower end of the airbag to be inserted and sealed.

[0024] In one possible implementation, the top assembly includes:

[0025] Top plate, the ventilation unit is disposed on the top plate;

[0026] The upper assembly is fixed to the lower end face of the top plate. The lower port of the upper assembly is fitted onto the top of the support sleeve and can move along the axial direction of the support sleeve. The lower port of the upper assembly is circumferentially provided with an upper sealing groove for the upper end of the airbag to be inserted and sealed.

[0027] The beneficial effects of the air spring inner support ring assembly fixture provided by this utility model are as follows: Compared with the prior art, the airbag is fitted onto the support sleeve from top to bottom, with the lower port of the airbag sealed to the bottom assembly part and the upper port of the airbag sealed to the top assembly part. Then, air is injected into the airbag through the ventilation unit using an air source, causing it to expand. The guide assembly moves downward along the axial direction, driving the lower ends of multiple positioning rotating arms to rotate outward synchronously from the longitudinal gap, allowing the positioning rotating arms to open the airbag. The inner support ring falls to the bottom of the multiple positioning rotating arms in the opened state, keeping the inner support ring in a horizontal state. Finally, the air source is turned off, and the top assembly part is moved upward, causing the upper port of the airbag to detach from the top assembly part. The airbag is depressurized, and the horizontal inner support ring is wrapped by the airbag. Finally, the airbag and inner support ring are manually removed to complete the assembly. The air spring inner support ring assembly fixture provided by this utility model ensures that the inner support ring can be horizontally assembled in the airbag with high positioning accuracy, avoiding the inner support ring from shifting and shaking, and improving the assembly accuracy of the product. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the air spring inner support ring assembly fixture provided by this utility model;

[0030] Figure 2 This is a diagram showing the usage state of the air spring inner support ring assembly tool according to an embodiment of this utility model;

[0031] Figure 3 A cross-sectional view of the air spring inner support ring assembly tooling provided by this utility model in its usage state;

[0032] Figure 4 for Figure 3 A magnified view of a section at point M.

[0033] In the picture:

[0034] 100. Bottom assembly; 110. Base plate; 120. Lower assembly; 121. Lower sealing groove; 200. Top assembly; 210. Top plate; 211. Air connector; 220. Upper assembly; 221. Upper sealing groove; 300. Support sleeve; 310. Fixing sleeve; 400. Positioning swing arm; 410. Positioning claw; 420. Reset claw; 430. Guide surface; 510. Conical guide block; 511. Limiting post; 512. Pressure plate; 520. Connecting rod; 530. Adjusting bolt; 540. Reset spring; 550. Guide post; 560. Fixing plate; 600. Airbag; 700. Inner support ring. Detailed Implementation

[0035] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0036] Unless otherwise explicitly specified, the use of terms such as "first," "second," or "third" is intended to distinguish different objects, not to describe a specific order.

[0037] Unless otherwise expressly defined, the use of directional terms such as “center,” “lateral,” “longitudinal,” “horizontal,” “vertical,” “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “back,” “left,” “right,” “clockwise,” “counterclockwise,” “high,” and “low” to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of the present invention.

[0038] Please see Figures 1 to 3 This invention provides a tooling for assembling an inner support ring of an air spring. The tooling includes a bottom assembly part 100, a support and positioning mechanism, and a top assembly part 200. The bottom assembly part 100 seals the lower port of the airbag 600. The support and positioning mechanism includes a support sleeve 300 and multiple positioning rotating arms 400. The lower end of the support sleeve 300 is fixed to the bottom assembly part 100. Multiple longitudinal slots corresponding to the positioning rotating arms 400 are provided on the outer periphery of the support sleeve 300. The upper ends of the positioning rotating arms 400 are hinged to the support sleeve 300. A guide component is axially arranged inside the support sleeve 300. The guide component moves axially to drive the lower ends of the multiple positioning rotating arms 400 to rotate outward synchronously from the longitudinal slots. The top assembly part 200 is located above the support sleeve 300 and moves axially along the support sleeve 300. The top assembly part 200 seals the upper port of the airbag 600 and includes a ventilation unit.

[0039] This utility model provides an air spring inner support ring assembly fixture. Compared with the prior art, the airbag 600 is fitted onto the support sleeve 300 from top to bottom. The lower port of the airbag 600 is sealed to the bottom assembly part 100, and the upper port of the airbag 600 is sealed to the top assembly part 200. Then, air is inflated into the airbag 600 through the ventilation unit using an air source. The guide assembly moves downward along the axial direction, driving the lower ends of multiple positioning rotating arms 400 to rotate outward synchronously from the longitudinal gap, allowing the positioning rotating arms 400 to open the airbag 600. The inner support ring 700 falls to its bottom along the multiple positioning rotating arms 400 in the opened state, so that the inner support ring 700 remains in a horizontal state. Finally, turn off the air supply and move the top assembly part 200 upwards, causing the upper port of the airbag 600 to detach from the top assembly part 200. The airbag 600 depressurizes, and the horizontally positioned inner support ring 700 is then enclosed by the airbag 600. Finally, manually remove the airbag 600 and the inner support ring 700 to complete the assembly. This utility model provides an air spring inner support ring assembly fixture that ensures the inner support ring 700 can be horizontally assembled in the airbag 600 with high positioning accuracy, preventing the inner support ring 700 from shifting or wobbling, and improving the product's assembly precision.

[0040] Please see Figure 3 The lower end of the positioning arm 400 is provided with an outwardly extending positioning claw 410, the top of which has a supporting end face for supporting the inner support ring 700. With the lower end of the positioning arm 400 rotated outward from the longitudinal gap, the outer wall of the positioning arm 400 forms a guide surface 430 that slopes outward from top to bottom. During assembly, the guide surface 430 plays a crucial role. As the inner support ring 700 gradually moves downward along the guide surface 430 of the positioning arm 400, the supporting end face of the positioning claw 410 can support the inner support ring 700. This structural design makes the installation position of the inner support ring 700 more accurate and effectively prevents the inner support ring 700 from shifting or shaking during installation. Meanwhile, since the lower end of the positioning arm 400 can rotate outward from the longitudinal gap, this greatly facilitates the installation and removal of the inner support ring 700. When it is necessary to remove the inner support ring 700, simply rotate the lower end of the positioning arm 400 inward into the longitudinal gap to remove the inner support ring 700, greatly improving the efficiency of assembly and maintenance. When the positioning arm 400 is in the working state, its lower end rotates outward from the longitudinal gap. The guide surface 430 formed by the outer wall of the positioning arm 400, which slopes from top to bottom and outward, guides the inner support ring 700 to slide downward. This ensures that the inner support ring 700 can slide into the predetermined position along the guide surface 430, reducing assembly resistance and avoiding damage to the equipment from hard collisions, while also preventing inaccurate positioning due to excessive angle.

[0041] Please see Figure 3 The upper end of the positioning arm 400 is provided with an inwardly extending reset claw 420. The guide component moves upward to drive the lower end of the positioning arm 400 to rotate inward through the longitudinal gap via the reset claw 420. During the upward displacement, the guide component gradually approaches the reset claw 420 and cooperates with it. As the guide component continues to move upward, it applies an upward force to the reset claw 420, which is transmitted down the positioning arm 400 through the reset claw 420. The lower end of the positioning arm 400 rotates inward from the originally open longitudinal gap. This process requires the longitudinal gap to have sufficient width to allow the lower end to rotate smoothly, while the side walls of the gap must have good guiding properties to ensure that the lower end of the arm does not deviate or get stuck during rotation. This design ensures that the positioning arm 400 can automatically retract after the inner support ring 700 is assembled, avoiding secondary damage to the airbag 600.

[0042] Preferably, a fixing sleeve 310 is detachably mounted on the top of the support sleeve 300 via connecting bolts. The inner diameter of the fixing sleeve 310 is smaller than the inner diameter of the support sleeve 300. When the reset claw 420 rotates upward to contact the fixing sleeve 310, the lower ends of the multiple positioning arms 400 are completely retracted into the interior of the support sleeve 300, and the multiple reset claws 420 do not protrude from the inner wall of the support sleeve 300. The guide assembly can also pass completely through the inner cavities of the support sleeve 300 and the fixing sleeve 310. The fixing sleeve 310 forms a rotation limit on the positioning arms 400 to ensure their stable working state.

[0043] Please see Figure 3 The upper end of the guide component abuts against the top assembly 200, which drives the guide component to move downwards. The lower end of the guide component is equipped with an elastic reset member, which provides the elastic force for the guide component to move upwards. During actual operation, when the top assembly 200 moves downwards along the axial direction of the support sleeve 300, it directly acts on the upper end of the guide component, pushing the guide component downwards synchronously. During the downward movement of the guide component, it drives the lower ends of multiple positioning arms 400 to rotate outwards synchronously from the longitudinal gap, thereby opening the airbag 600 and providing conditions for the horizontal assembly of the inner support ring 700. When the inner support ring 700 is in place and the positioning arms 400 need to be retracted, the elastic reset member begins to function. The upward elastic force provided by the elastic reset member causes the guide component to move upwards. The guide component then, through cooperation with the reset claw 420, drives the lower ends of the positioning arms 400 to rotate inwards from the longitudinal gap, completing the key action switching in the entire assembly process.

[0044] Furthermore, the aforementioned structure is adaptable to inner support rings 700 of different sizes. By adjusting the parameter relationships between the guide assembly, the positioning arm 400, and the elastic reset component, it can accommodate the assembly requirements of inner support rings 700 of different sizes within a certain range. In actual production, this can greatly improve the versatility of production equipment and reduce production costs.

[0045] Please see Figure 3The guide assembly includes a tapered guide block 510 and a connecting part. The outer diameter of the tapered guide block 510 decreases from top to bottom, and an elastic reset member is disposed at the lower end of the tapered guide block 510. The connecting part is longitudinally connected to the upper end of the tapered guide block 510, and the upper end of the connecting part abuts against the top mounting part 200. When the tapered guide block 510 moves downward, its inclined outer wall contacts the positioning arm 400, which can convert the vertically downward force into a component force that causes the lower end of the positioning arm 400 to rotate outward, thus opening the airbag 600. The elastic reset member is installed at the lower end of the tapered guide block 510 to provide power for its upward reset, ensuring a smooth assembly process. The connecting part acts as a bridge, transmitting the displacement of the top mounting part 200 to the tapered guide block 510, ensuring coordinated movement of all components. The elastic reset member not only provides upward reset power for the tapered guide block 510, but also provides a certain buffering effect on the pressure between components during the assembly process. For example, when a slight impact occurs during the assembly process, the elastic reset component can absorb some of the energy, preventing this impact from adversely affecting the guide assembly and the airbag 600. The design of the guide assembly has a certain degree of versatility; the dimensions of the tapered guide block 510, the elastic coefficient of the elastic reset component, and the connection method of the connecting parts can be appropriately adjusted according to different airbag 600 models or assembly requirements to meet diverse needs.

[0046] Please see Figure 3 The connecting part includes a connecting rod 520 and an adjusting bolt 530. The lower end of the connecting rod 520 is fixedly connected to a tapered guide block 510; the adjusting bolt 530 is longitudinally threaded to the upper end of the connecting rod 520, and the upper end of the adjusting bolt 530 abuts against the top mounting part 200. The connection between the connecting rod 520 and the tapered guide block 510 ensures reliable force transmission and prevents instability in force transmission due to height adjustments. The adjusting bolt 530 is threaded onto the connecting rod 520, and its height can be flexibly adjusted by rotating it, thus adapting to the assembly requirements of air springs of different specifications, giving the tooling greater versatility and flexibility during use.

[0047] Please see Figures 3 to 4The lower end of the tapered guide block 510 is provided with a downwardly extending limiting post 511, and the upper end of the limiting post 511 is circumferentially provided with a pressure plate 512. The elastic reset component is a reset spring 540, the lower end of which is fitted onto the limiting post 511 and abuts against the lower end face of the pressure plate 512. The lower end of the reset spring 540 abuts against the bottom assembly part 100. In the air spring inner support ring assembly fixture, the limiting post 511, pressure plate 512, and reset spring 540 at the lower end of the tapered guide block 510 work together to greatly improve the performance and stability of the fixture. The limiting post 511 plays a precise guiding and limiting role, ensuring that the reset spring 540 remains vertical during the extension and retraction process, avoiding spring skewing or twisting, and ensuring that its elastic force can act stably and evenly on the tapered guide block 510, making the reset action of the guide assembly more reliable. The pressure plate 512 is used to fix the upper end of the reset spring 540 and apply downward pressure to the reset spring 540 to prevent the reset spring 540 from falling off the limit post 511 during operation. At the same time, it evenly distributes the spring force so that the tapered guide block 510 is subjected to more balanced force.

[0048] Furthermore, the bottom assembly 100 provides excellent support for the lower end of the return spring 540, ensuring that the lower end of the return spring 540 can stably rest against it when under pressure, thereby further enhancing the stability of the entire structure. This ensures that during operation, even in complex working environments and with frequent operations, the coordinated cooperation between the tapered guide block 510, the limiting post 511, the pressure plate 512, the return spring 540, and the bottom assembly 100 remains efficient and stable. This significantly improves the assembly quality and efficiency of the air spring inner support ring 700, reducing assembly errors and product quality problems caused by tooling instability.

[0049] Please see Figures 3 to 4The tapered guide block 510 has an axially formed guide hole, the lower end of which extends to the lower end face of the limiting post 511. A guide post 550 is slidably disposed within the guide hole, and the lower end of the guide post 550 is fixed to the bottom assembly part 100. A return spring 540 is fitted around the outer periphery of the guide post 550. The tapered guide block 510, guide hole, guide post 550, and return spring 540 cooperate with each other to provide stable guidance and reset functions for the entire assembly process. The sliding engagement between the guide hole on the tapered guide block 510 and the guide post 550 can precisely limit the movement trajectory of the tapered guide block 510, ensuring that it can only move axially. This effectively prevents deviation when driving the positioning arm 400, ensuring that the lower end of the positioning arm 400 can rotate outward or inward synchronously and stably, thus improving the assembly accuracy of the inner support ring 700. Meanwhile, by fitting the return spring 540 around the guide post 550, the spring can not only remain stable during extension and retraction, preventing it from twisting and deforming, but also further enhance the guiding effect and ensure the reliability of the guide assembly during the elastic return process.

[0050] When the positioning arm 400 is driven, the tapered guide block 510 moves axially along the guide post 550 within the guide hole. The return spring 540 extends and retracts with the movement of the tapered guide block 510, and its stable performance ensures the continuity of the entire process. After multiple assembly operations, the guide assembly can still maintain precise guidance and stable return function, which provides a strong guarantee for the continuous and stable operation of the production equipment. Even in some harsh working environments, such as when there is a certain degree of vibration or dust interference, the sealing performance and stability of this structure can effectively resist the influence of these adverse factors, ensuring that the assembly accuracy of the inner support ring 700 is not affected.

[0051] Please see Figure 3The bottom assembly 100 includes a base plate 110 and a lower fitting 120. A support sleeve 300 is fixed to the upper surface of the base plate 110; the lower fitting 120 is fixed to the upper surface of the base plate 110 and located outside the support sleeve 300. The upper port of the lower fitting 120 has a circumferentially circumferentially opened lower sealing groove 121 for the insertion and sealing of the lower end of the airbag 600. The base plate 110 provides a stable support platform for the entire tooling, ensuring that the relative positions of each component remain fixed during assembly, reducing shaking and displacement, and creating conditions for precise assembly. The support sleeve 300, fixed to the base plate 110, is the installation foundation for key components such as the positioning arm 400, and its stability directly affects the movement accuracy of the positioning arm 400. The lower fitting 120 surrounds the support sleeve 300 and is fixedly connected to the base plate 110. The lower sealing groove 121 at the upper end can tightly fit the lower end of the airbag 600, forming a good sealing effect to prevent gas leakage during the inflation of the airbag 600, ensuring that the airbag 600 can expand smoothly and thus ensuring the correct assembly of the inner support ring 700. In addition, a fixing plate 560 is integrally provided at the lower end of the guide post 550. The guide post 550 is bolted to the upper end face of the base plate 110 through the fixing plate 560 to ensure the verticality of the guide post 550. If the verticality of the guide post 550 is deviated during assembly, it may cause misalignment of subsequent components, thereby affecting the function of the entire bottom assembly 100. At the same time, in addition to the sealing function, the lower fitting 120 can also prevent dust, debris, etc. from entering the assembly interior, avoiding damage to internal components. Moreover, the material of the lower fitting 120 has a certain degree of wear resistance and corrosion resistance, and can be used for a long time in relatively harsh working environments. While the base plate 110 provides a stable support platform, its upper surface still requires regular cleaning. During assembly, small metal shavings, oil stains, and other residues may remain on the upper surface. If these residues are not cleaned in time, they may affect the assembly accuracy between components and may even accelerate component wear.

[0052] Please see Figure 3The top assembly 200 includes a top plate 210 and an upper fitting 220. A venting unit is disposed on the top plate 210; the upper fitting 220 is fixed to the lower end face of the top plate 210, and its lower port is fitted onto the top of the support sleeve 300 and can move axially along the support sleeve 300. The lower port of the upper fitting 220 has a circumferentially circumferentially formed upper sealing groove 221 for inserting and sealing the upper end of the airbag 600. The venting unit is an air connector 211, and the top plate 210, as the main component supporting the air connector 211, provides a channel for the airbag 600 to inflate, ensuring that gas can smoothly enter the airbag 600 and cause it to expand. The upper fitting 220 is connected to the top plate 210, not only sealing the upper end of the airbag 600 and ensuring the airtightness of the airbag 600 during inflation, but also allowing it to move axially along the support sleeve 300. The upper part of the upper fitting 220 is closed and connected to the lower end of the top plate 210 by bolts. When the air connector 211 is assembled, its lower end is inserted into the inner cavity of the upper fitting 220. The upper fitting 220 is sealed to the upper end of the airbag 600. After inflation, the upper fitting 220 is moved upward to detach the upper end of the airbag 600, which facilitates the subsequent operation of the airbag 600 wrapping the inner support ring 700.

[0053] Preferably, to further improve the stability of the connection between the upper body fitting 220 and the top plate 210, a positioning pin is added to the bolt connection. The positioning pin is inserted into pre-set positioning holes in the top plate 210 and the upper body fitting 220, making the connection not only secure but also allowing for faster and more accurate positioning during assembly. The air connector 211 has an internal gas flow regulating device. This device can precisely control the gas flow according to the inflation requirements of the airbag 600. When inflation begins, the gas flow regulating device slowly releases gas according to the initial state of the airbag 600, causing the airbag 600 to gradually inflate. As the airbag 600 inflates, it gradually increases the gas flow until the airbag 600 is completely filled with gas. This design effectively avoids impact on the airbag 600 due to excessive gas flow, extending the service life of the airbag 600.

[0054] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fixture for assembling an inner support ring of an air spring, characterized in that, include: Bottom assembly part (100), the bottom assembly part (100) is used to seal the lower port of the airbag (600); A support positioning mechanism is provided, comprising a support sleeve (300) and a plurality of positioning rotating arms (400). The lower end of the support sleeve (300) is fixed to the bottom assembly part (100). The outer periphery of the support sleeve (300) is provided with a plurality of longitudinal slots corresponding one-to-one with the plurality of positioning rotating arms (400). The upper end of the positioning rotating arm (400) is hinged to the support sleeve (300). A guide component is axially provided inside the support sleeve (300). The guide component moves axially to drive the lower ends of the plurality of positioning rotating arms (400) to rotate outward synchronously from the longitudinal slots. Top mounting part (200) is disposed above the support sleeve (300) and moves along the axial direction of the support sleeve (300). The top mounting part (200) is used to seal the upper port of the airbag (600). The top mounting part (200) is provided with a ventilation unit.

2. The air spring inner support ring assembly fixture as described in claim 1, characterized in that, The lower end of the positioning arm (400) is provided with an outwardly extending positioning claw (410), and the top of the positioning claw (410) has a supporting end face for supporting the inner support ring (700).

3. The air spring inner support ring assembly fixture as described in claim 1, characterized in that, The upper end of the positioning arm (400) is provided with an inwardly extending reset claw (420). The guide assembly moves upward so as to drive the lower end of the positioning arm (400) to rotate inward from the longitudinal gap through the reset claw (420).

4. The air spring inner support ring assembly fixture as described in claim 1, characterized in that, The upper end of the guide component abuts against the top mounting part (200), and the top mounting part (200) drives the guide component to move downward. The lower end of the guide component is provided with an elastic reset member, which is used to provide elastic force for the guide component to move upward.

5. The air spring inner support ring assembly fixture as described in claim 4, characterized in that, The guiding component includes: A tapered guide block (510) has an outer diameter that decreases from top to bottom, and the elastic reset member is disposed at the lower end of the tapered guide block (510). A connecting part is longitudinally connected to the upper end of the tapered guide block (510), and the upper end of the connecting part abuts against the top mounting part (200).

6. The air spring inner support ring assembly fixture as described in claim 5, characterized in that, The connecting part includes: A connecting rod (520) is provided, the lower end of which is fixedly connected to the tapered guide block (510); An adjusting bolt (530) is longitudinally threaded to the upper end of the connecting rod (520), and the upper end of the adjusting bolt (530) abuts against the top mounting part (200).

7. The air spring inner support ring assembly fixture as described in claim 5, characterized in that, The lower end of the tapered guide block (510) is provided with a downwardly extending limiting post (511), and the upper end of the limiting post (511) is provided with a pressure plate (512) circumferentially. The elastic reset member is a reset spring (540). The lower end of the reset spring (540) is fitted onto the limiting post (511) and abuts against the lower end face of the pressure plate (512). The lower end of the reset spring (540) abuts against the bottom assembly part (100).

8. The air spring inner support ring assembly fixture as described in claim 7, characterized in that, The tapered guide block (510) has an axially formed guide hole. The lower end of the guide hole extends to the lower end face of the limiting post (511). A guide post (550) is slidably disposed in the guide hole. The lower end of the guide post (550) is fixed to the bottom assembly part (100). The reset spring (540) is fitted around the outer periphery of the guide post (550).

9. The air spring inner support ring assembly fixture as described in any one of claims 1-8, characterized in that, The bottom assembly (100) includes: The base plate (110) is fixed to the upper end face of the support sleeve (300); The lower fitting (120) is fixed to the upper end face of the base plate (110) and located outside the support sleeve (300). The upper port of the lower fitting (120) is circumferentially provided with a lower sealing groove (121) for the lower end of the airbag (600) to be inserted and sealed.

10. An air spring inner support ring assembly fixture as described in any one of claims 1-8, characterized in that, The top mounting portion (200) includes: Top plate (210), the ventilation unit is disposed on the top plate (210); The upper fitting (220) is fixed to the lower end face of the top plate (210). The lower port of the upper fitting (220) is fitted onto the top of the support sleeve (300) and can move along the axial direction of the support sleeve (300). The lower port of the upper fitting (220) is circumferentially provided with an upper sealing groove (221) for the upper end of the airbag (600) to be inserted and sealed.

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