Air spring supporting ring assembling method and assembling tool

Abstract

The invention provides an air spring supporting ring assembling method and assembling tool, and the assembling method comprises the steps that the two ends of a leather bag are placed into a clamping mechanism respectively to be clamped and sealed, and a supporting ring is stuffed into the leather bag in the leather bag clamping process; the leather bag in the sealed state is inflated and pressurized, so that the leather bag is expanded to be larger than the supporting ring in diameter, and the supporting ring falls onto the end face of the clamping mechanism at the bottom end of the leather bag; after the leather bag is deflated and decompressed, the leather bag is taken down from the clamping mechanism, at the moment, the leather bag restores and wraps the supporting ring, and assembling of the supporting ring is completed. The leather bag is clamped and sealed through the clamping mechanisms at the upper end and the lower end of the leather bag, the supporting ring stuffed into the leather bag falls to the corresponding assembling position on the horizontal end face of the bottom in cooperation with the inflation expansion process, and then the supporting ring is wrapped through deflation contraction of the leather bag to complete assembling. The problems that a supporting ring in an air spring leather bag is difficult to adjust in position during assembly, time and labor are consumed during operation, assembly difficulty is large, and batch production is not suitable are solved.

Description

Technical Field

[0001] This invention relates to the field of air spring technology, and in particular to an air spring support ring assembly method and assembly fixture. Background Technology

[0002] Generally, high-end cars have a rear shock absorption system consisting of two independently mounted parts: air springs and hydraulic damping shock absorbers. These air springs are further categorized into those with and without metal guide sleeves. Air springs with metal guide sleeves (…) Figure 1 (Left image) Compared to an air spring without a metal guide sleeve ( Figure 1 (See right image) Air springs have advantages such as greater dynamic and static stiffness and protection of the air spring, so most vehicle designs tend to use air springs with metal guide sleeves to improve the overall performance of cars.

[0003] like Figure 1 The key and challenging aspect of assembling the air spring's fixed metal guide sleeve, as shown in the left figure, lies in the assembly of the support ring. Firstly, the quality control level of the support ring assembly directly affects the air spring's performance. If the support ring is tilted too much, it will cause the subsequent bladder guide sleeve to fail due to improper crimping. Secondly, if the metal guide sleeve is positioned too high or too low, it may cause collisions and generate noise during use. Thirdly, when the outer diameter of the support ring... Compared to the inner diameter of the sac When the difference is 20-30mm (e.g.) Figure 2 As shown, how to accurately install the support ring with this fitting relationship into the required position inside the bladder is a major challenge for engineering technicians. Only by assembling the support ring in the correct position can the assembly of the metal guide sleeve meet the design requirements, thereby satisfying the comprehensive performance indicators of the air spring design.

[0004] like Figure 3 The diagrams shown depict the bladder, the support ring, and the state of the support ring after it has been inserted into the bladder.

[0005] For products where the inner diameter of the bladder and the outer diameter of the support ring are not significantly different, the support ring can be easily assembled into the required position by manually inserting it and using positioning fixtures. However, for products where the inner diameter of the bladder and the outer diameter of the support ring differ significantly, such as... Figure 2 When Dd > 20mm, in the early stages of new product development, an attempt was made to place the support ring inside the bladder, then seal it by pressing the two ends of the bladder, and then inflate the bladder to align the support ring. However, this method was almost impossible to achieve precisely. The operation was time-consuming and labor-intensive, and the assembly was difficult, making it unsuitable for mass production. Therefore, it is urgent to explore a new assembly process to solve these technological challenges.

[0006] It should be noted that the information disclosed in the above BACKGROUND section is only used to strengthen the understanding of the background of the present application, and does not constitute any limitation on the present application. SUMMARY

[0007] In view of the above-mentioned disadvantages of the prior art, the present application provides an air spring support ring assembly method and assembly tool, which clamps and seals the skin bag through the clamping mechanism at the upper and lower ends of the skin bag, and cooperates with the inflation process to make the support ring inserted into the skin bag fall onto the corresponding assembly position on the bottom horizontal end face, and then the support ring is wrapped and assembled by deflating and shrinking the skin bag, so as to solve the problems that the support ring in the air spring skin bag is difficult to be placed in position, the operation is time-consuming and laborious, the assembly is difficult, and it is not suitable for mass production.

[0008] The present application provides an air spring support ring assembly method, comprising:

[0009] S10, respectively placing both ends of the skin bag into the clamping mechanism for clamping and sealing, and inserting the support ring into the skin bag during clamping the skin bag;

[0010] S20, inflating and pressurizing the skin bag in the sealed state, so that the skin bag is inflated and enlarged to a diameter greater than that of the support ring, so that the support ring falls onto the end face of the clamping mechanism at the bottom end of the skin bag;

[0011] S30, after deflating and depressurizing the skin bag, and taking it off from the clamping mechanism, at this time the skin bag recovers and wraps the support ring, completing the assembly of the support ring.

[0012] In an embodiment of the present application, the step S10 further comprises:

[0013] S11, placing the lower end of the skin bag into the lower clamping mechanism, clamping and sealing the skin bag by driving the clamping mechanism with the air cylinder, and making the lower end face of the skin bag fit the end face of the lower clamping mechanism horizontally;

[0014] S12, inserting the support ring from the upper end of the skin bag, and then placing the upper end of the skin bag into the upper clamping mechanism, clamping and sealing the skin bag by driving the clamping mechanism with the air cylinder, so that the skin bag is in a sealed state.

[0015] In an embodiment of the present application, the step S20 further comprises:

[0016] S21, extending the piston rod of the air cylinder into the skin bag along the clamping mechanism, and inflating and pressurizing the air bag through the air hole on the piston rod;

[0017] S22, during the process of inflating and pressurizing the air bag, moving the upper clamping mechanism downward to compress the air bag to the maximum diameter state.

[0018] In an embodiment of the present application, the present application also provides an air spring support ring assembly tool, comprising a rack, air cylinders and clamping mechanisms, two air cylinders arranged oppositely are respectively arranged at the upper and lower ends of the rack; two clamping mechanisms arranged oppositely are respectively arranged on the two air cylinders, the clamping mechanism is formed with a containing space for clamping the air bag of the air spring, and the size of the containing space is adjusted by driving the clamping mechanism by the air cylinder, and the end face of the clamping mechanism at the lower side is in a horizontal posture; wherein at least one air cylinder is provided with a gas hole on the piston rod, and the piston rod of the air cylinder is in communication with the inside of the clamped air bag.

[0019] In an embodiment of the present application, the clamping mechanism comprises a cone sleeve, a connecting plate, a locking block and an inner core, the cone sleeve is connected with the cylinder body of the air cylinder through the shell of the clamping mechanism; the connecting plate is arranged in the cone sleeve and is sleeved on the piston rod of the air cylinder; the locking block is arranged on the connecting plate, and the outer side of the locking block is adjacent to the inner side of the cone sleeve; the inner core is arranged on the connecting plate and is sleeved on the end of the piston rod of the air cylinder, and is located on the inner side of the locking block; wherein the outer side of the locking block and the inner side of the cone sleeve are provided with the same draft angle, and the gap formed between the locking block and the inner core is the containing space for clamping the air bag.

[0020] In an embodiment of the present application, the connecting plate is provided with a waist-shaped hole for arranging the locking block and a positioning hole for arranging the inner core, and the waist-shaped hole is arranged along the radial direction of the connecting plate.

[0021] In an embodiment of the present application, the locking block comprises a plurality of petal blocks divided along the radial direction, each adjacent petal block is connected by a spring, and each petal block is arranged in the waist-shaped hole by a screw.

[0022] In an embodiment of the present application, the outer diameter of the inner core is equal to the inner diameter of the air bag, the outer diameter surface of the inner core is provided with anti-skid teeth, a screw hole connected with the piston rod of the air cylinder is arranged at the bottom of the inner core, and a through hole connected with the screw hole is arranged at the upper end surface of the inner core, so as to be in communication with the gas hole arranged on the piston rod of the air cylinder.

[0023] In an embodiment of the present application, when the air bag is placed in the containing space, the locking block, the inner core and the air bag are in clearance fit.

[0024] In an embodiment of the present application, it also comprises a driving member arranged on the rack, for adjusting the distance between the two air cylinders.

[0025] The beneficial effects of the present application at least include:

[0026] 1. The supporting ring in the air spring skin bag is assembled by clamping and sealing the skin bag through the clamping mechanism at the upper and lower ends of the skin bag, and cooperating with the inflation process to make the supporting ring in the skin bag fall onto the corresponding assembly position on the bottom horizontal end face, and then wrapping the supporting ring by deflating and shrinking the skin bag, thereby replacing the traditional manual or auxiliary tool assembly method, and improving the assembly quality and efficiency of the supporting ring in the skin bag.

[0027] 2. By setting the lower end of the skin bag and the end face of the clamping mechanism below in a close and horizontal posture, the supporting ring falls freely onto the end face of the bottom clamping mechanism under the action of gravity after the skin bag is inflated and expanded, so as to be in a horizontal posture, thereby meeting the assembly precision requirement of the supporting ring in the skin bag.

[0028] 3. By providing the assembly tool, only manual operation is required to put the upper and lower ends of the skin bag into the corresponding clamping mechanism and simultaneously insert the supporting ring during the assembly operation, and the remaining assembly steps can be completed by operating the assembly tool, thereby one-time assembly and reducing the labor intensity.

[0029] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0030] The drawings herein are incorporated into the specification and form part of the specification, show embodiments consistent with the present application, and together with the specification serve to explain the principles of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained from these drawings without creative labor for those skilled in the art. In the drawings:

[0031] Figure 1 The left and right two figures are schematic diagrams of air springs with / without metal guide sleeve structure;

[0032] Figure 2 The schematic diagram of the cooperation relationship between the supporting ring and the skin bag in the air spring;

[0033] Figure 3 The schematic diagram of the assembly relationship between the supporting ring and the skin bag in the air spring;

[0034] Figure 4 The flowchart of the air spring supporting ring assembly method in an embodiment of the present application;

[0035] Figure 5 The left and right two figures are respectively the state diagrams of putting the lower end of the skin bag into the clamping mechanism and clamping the lower end of the skin bag during the supporting ring assembly process;

[0036] Figure 6The three images, left and right, are schematic diagrams of the support ring being inserted, the upper end of the bladder being clamped, and the bladder being inflated during the assembly process, respectively.

[0037] Figure 7 The three figures, left and right, respectively illustrate the states of the upper clamping mechanism pressing down, the bladder deflating and contracting, and the bladder completing the assembly of the support ring during the support ring assembly process.

[0038] Figure 8 This is a schematic diagram of the air spring support ring assembly fixture in one embodiment of the present invention;

[0039] Figure 9 This is a schematic diagram of the cylinder structure in the air spring support ring assembly tooling of the present invention;

[0040] Figure 10 This is a schematic diagram of the conical sleeve in the air spring support ring assembly fixture of the present invention;

[0041] Figure 11 This is a schematic diagram of the connecting plate in the air spring support ring assembly fixture of the present invention;

[0042] Figure 12 This is a schematic diagram of the locking block in the air spring support ring assembly fixture of the present invention;

[0043] Figure 13 This is a schematic diagram of the inner core structure in the air spring support ring assembly fixture of the present invention.

[0044] In the diagram: 1. Frame; 2. Cylinder; 21. Piston rod; 210. Air hole; 3. Clamping mechanism; 31. Tapered sleeve; 32. Connecting plate; 321. Waist-shaped hole; 322. Positioning hole; 33. Locking block; 331. Flange block; 34. Inner core; 341. Screw hole; 342. Through hole; 4. Leather bag; 40. Support ring; 5. Drive component. Detailed Implementation

[0045] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other. It should also be understood that the terminology used in the embodiments of the present invention is for describing specific implementation schemes and not for limiting the scope of protection of the present invention.

[0046] Please see Figures 4 to 13It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness or purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms used in this specification regarding position, quantity, etc., are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to these relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0047] Please see Figures 4 to 7 The present invention provides a method for assembling an air spring support ring, comprising:

[0048] S10. Place both ends of the bladder 4 into the clamping mechanism 3 for clamping and sealing, and insert the support ring 40 into it during the clamping process of the bladder 4.

[0049] S20. Inflate and pressurize the sealed bladder 4 to expand the bladder 4 to a diameter larger than the diameter of the support ring 40, so that the support ring 40 falls onto the end face of the clamping mechanism 3 at the bottom of the bladder 4.

[0050] S30. After depressurizing the bladder 4, remove it from the clamping mechanism 3. At this time, the bladder 4 will recover and wrap around the support ring 40, completing the assembly of the support ring 40.

[0051] Specifically, in this embodiment of the invention, the steps of assembling the support ring 40 into the air spring bladder 4 include: first, placing the bladder 4 into the clamping position of the lower clamping mechanism 3; then controlling the movement of the lower cylinder 2 to clamp the bladder 4; next, inserting the support ring 40 into the bladder 4; then, inserting the upper end of the bladder 4 into the clamping position of the upper clamping mechanism 3; then, inflating the upper cylinder 2 to clamp the bladder 4 using the upper clamping mechanism 3; after both ends of the bladder 4 are clamped and sealed, inflating the bladder 4 while simultaneously controlling the upper clamping mechanism 3 to press down and move, causing the outer diameter of the bladder 4 to expand and deform to its maximum state. At this time, the inner diameter of the bladder 4 is larger than the outer diameter of the support ring 40, causing the support ring 40 to fall onto the end face of the lower clamping mechanism 3 under the action of gravity; finally, deflating the bladder 4 and driving the clamping mechanism 3 with the upper and lower cylinders 2 to release the bladder 4 to remove the semi-finished bladder 4 with the support ring 40 assembled.

[0052] Thus, for the step of installing the support ring 40 into the bladder 4 in the air spring manufacturing process, especially for products where the inner diameter of the bladder 4 differs greatly from the outer diameter of the support ring 40, the bladder 4 can be clamped and sealed by the above assembly method. The bladder 4 can be expanded by the inflation and pressurization process, and the support ring 40 can be dropped to the bottom end face by gravity, thereby completing the step of assembling the support ring 40 into the bladder 4.

[0053] It should be noted that the assembly position of the support ring 40 in the bladder 4 can be controlled by setting the depth at which the lower end of the bladder 4 is clamped in the lower clamping mechanism 3. This ensures that during the inflation and pressurization process of the bladder 4, the position of the support ring 40 on the end face of the bottom clamping mechanism 3 corresponds to the position on the bladder 4 where the support ring 40 needs to be assembled, thus guaranteeing the assembly quality of the support ring 40 in the bladder 4. For bladders 4 and support rings 40 with different dimensional relationships, the inflation and pressurization of the bladder 4 can be adjusted so that inflation and pressurization can be stopped and the depressurization phase can begin when the support ring 40 can fall to the assembly position of the bladder 4, thereby improving the assembly efficiency of the support ring 40 in the bladder 4.

[0054] Furthermore, step S10 also includes:

[0055] S11. Place the lower end of the bladder 4 into the clamping mechanism 3 below, and drive the clamping mechanism 3 through the cylinder 2 to clamp the bladder 4 for sealing, and make the lower end face of the bladder 4 fit horizontally with the end face of the clamping mechanism 3 below.

[0056] S12. Insert the support ring 40 into the upper end of the bladder 4, and then place the upper end of the bladder 4 into the clamping mechanism 3 above. Drive the clamping mechanism 3 through the cylinder 2 to clamp the bladder 4 to seal it, so that the bladder 4 is in a sealed state.

[0057] Furthermore, the steps in S20 also include:

[0058] S21. Insert the piston rod 21 of the cylinder 2 into the bladder 4 along the clamping mechanism 3, and inflate and pressurize the bladder through the air hole 210 on the piston rod 21.

[0059] S22. During the inflation and pressurization of the airbag, the clamping mechanism 3 above moves downward to compress the airbag to its maximum diameter.

[0060] Furthermore, by keeping the lower end face of the bladder 4 and the end face of the clamping mechanism 3 in horizontal contact, the position of the support ring 40 in the bladder 4 is controlled by gravity, ensuring that the posture of the support ring 40 is located on the cross-section of the bladder 4. This ensures that the bladder 4 has an axis that coincides with the support ring 40 after deflating. Simultaneously, by using a cylinder 2 to drive the clamping mechanism 3, and by opening corresponding air holes 210 and installing air nozzles on the piston rod 21 of the cylinder 2, air can be supplied using the air source of the cylinder 2 during the inflation and pressurization of the bladder 4.

[0061] More specifically, in this embodiment of the invention, assembling the support ring 40 into the bladder 4 includes the following eight steps:

[0062] 1. Inserting the bladder 4 into the lower clamping mechanism 3: First, insert the bladder 4 into the lower clamping mechanism 3, ensuring that the lower end face of the bladder 4 is flush with the end face of the clamping mechanism 3. Figure 5 As shown in the left figure.

[0063] II. Lower cylinder 2 inflates and clamps the bladder 4: The lower clamping mechanism 3 is activated by inflating the lower cylinder 2 to clamp the lower end of the bladder 4. Once the lower end of the bladder 4 is clamped, a sealing condition is formed at the lower end, preventing it from being freed. Figure 5 As shown in the figure on the right.

[0064] 3. Inserting the support ring 40 into the bladder 4: Insert the support ring 40 into the bladder 4, and then insert the upper clamping mechanism 3 approximately 40mm from the upper end of the bladder 4. Figure 6 As shown in the left figure.

[0065] IV. Upper Cylinder 2 Inflates and Clamps the Leather Bag 4: The upper clamping mechanism 3 is enabled by inflating the upper cylinder 2 to clamp the upper end of the leather bag 4. Once the upper end of the leather bag 4 is clamped, a sealing condition is formed at the upper end of the leather bag 4, preventing it from being freed. Figure 6 As shown in the middle figure.

[0066] V. Inflation of the bladder 4: Because the upper and lower ends of the bladder 4 are clamped by the upper and lower clamping mechanisms 3, a completely sealed space is formed. Then, air is injected into the bladder 4 through the cylinder 2, causing it to expand and enlarge. Figure 6 As shown in the figure on the right.

[0067] VI. Pressure Expansion to Maximize the Outer Diameter of the Bulb 4: The upper clamping mechanism 3 descends via the electric cylinder, causing the bulge 4 to inflate and expand while being pressed down, maximizing its diameter. This causes the support ring 40 to fall to the bottom. Figure 7 As shown in the left figure.

[0068] VII. Deflating the bladder 4: The gas in the bladder 4 is released, causing it to shrink back to its original diameter and then enclose the support ring 40. At this point, the assembly of the support ring 40 is complete. Figure 7 As shown in the middle figure.

[0069] 8. Removing the semi-finished product: Release the air from the upper and lower clamping mechanisms 3 and upper and lower cylinders 2, loosen the clamping mechanisms 3, and remove the leather bag 4. Figure 7 As shown in the figure on the right.

[0070] Please see Figure 8 In one embodiment, the present invention also provides an air spring support ring assembly fixture, including a frame 1, a cylinder 2, and a clamping mechanism 3. Two cylinders 2 arranged in opposite directions are respectively installed at the upper and lower ends of the frame 1. Two clamping mechanisms 3 arranged in opposite directions are respectively installed on the two cylinders 2. The clamping mechanism 3 forms a receiving space for clamping the air spring bladder 4, and the size of the receiving space is adjusted by driving the clamping mechanism 3 through the cylinder 2. The end face of the lower clamping mechanism 3 is in a horizontal position. At least one cylinder 2 has an air hole 210 on its piston rod 21, and the piston rod 21 of the cylinder 2 is connected to the inside of the clamped air bladder.

[0071] Specifically, in the process of assembling the support ring 40 into the air spring bladder 4 in this embodiment of the invention, a cylinder 2 is installed at both the upper and lower ends of the frame 1 of the assembly fixture, with the driving directions of the cylinders 2 facing each other and coaxially aligned for easy alignment. Next, a clamping mechanism 3 is installed in the driving direction of the cylinders 2, and the bladder 4 to which the support ring 40 is to be assembled is clamped between the two clamping mechanisms 3. The clamping mechanism 3 located above the frame 1 is the upper clamping mechanism 3, and the clamping mechanism 3 located below the frame 1 is the lower clamping mechanism 3. After the upper and lower ends of the bladder 4 are sequentially placed into the upper and lower clamping mechanisms 3 and the support ring 40 is simultaneously inserted and clamped for sealing, the piston rod 21 of the cylinder 2 inflates and pressurizes the sealed bladder 4 through the clamping mechanism 3, expanding the bladder 4 so that the support ring 40 inserted and clamped therein can freely fall to the bottom horizontal end face under gravity, thereby assembling the support ring 40 into the air spring bladder 4.

[0072] It should be noted that the air source for inflation and pressurization is provided by at least one of the cylinders 2, for example, by selecting a custom-made lower cylinder 2, since it is necessary to inflate the bladder 4 through it. Therefore, an air hole 210 and an air nozzle mounting hole are machined on its piston rod 21, so that the inflation and pressurization into the clamped and sealed bladder 4 is controlled by the piston rod 21 of the cylinder 2.

[0073] Please see Figure 5 , Figures 8 to 10In one embodiment, the clamping mechanism 3 includes a conical sleeve 31, a connecting plate 32, a locking block 33, and an inner core 34. The conical sleeve 31 is connected to the cylinder body of the cylinder 2 through the housing of the clamping mechanism 3. The connecting plate 32 is installed inside the conical sleeve 31 and is sleeved on the piston rod 21 of the cylinder 2. The locking block 33 is installed on the connecting plate 32, and the outer side of the locking block 33 is adjacent to the inner side of the conical sleeve 31. The inner core 34 is installed on the connecting plate 32 and sleeved on the end of the piston rod 21 of the cylinder 2, and is located inside the locking block 33. The outer side of the locking block 33 and the inner side of the conical sleeve 31 are provided with the same draft angle, and the gap formed between the locking block 33 and the inner core 34 is the accommodating space for clamping the bladder 4.

[0074] Specifically, in the clamping mechanism 3 of this embodiment, the locking block 33 installed therein cooperates with the inner core 34 to clamp and seal the end of the inserted bladder 4. The housing of the clamping mechanism 3 and the conical sleeve 31 therein are connected to the cylinder body of the cylinder 2 for driving, and cooperate with the inner core 34 of the piston rod 21 of the cylinder 2 and the movable locking block 33 installed in the housing and the conical sleeve 31. When the piston rod 21 of the cylinder 2 pulls the inner core 34 to move axially along the clamping mechanism 3, it will carry the locking block 33 to move synchronously through the connecting plate 32. The locking block 33 moving axially is restricted by the position of the outer conical sleeve 31, and tends to move radially along the connecting plate 32. This causes a change in the gap between the locking block 33 and the inner core 34, so that when the bladder 4 is clamped, the locking block 33 moves closer to the inner core 34 in the radial direction, and the size of the accommodating space for clamping the bladder 4 gradually decreases in the radial direction to achieve clamping and sealing of the end of the bladder 4. After the support ring 40 is assembled, the piston rod 21 of the restoring cylinder 2 is positioned in the axial direction, so that the size of the accommodating space between the locking block 33 and the inner core 34 increases and is restored in the radial direction, so that the bladder 4 with the support ring 40 assembled can be removed.

[0075] It should be noted that in this embodiment of the invention, the bladder 4 is a rotating body, and the inner core 34, locking block 33, conical sleeve 31, and connecting plate 32 in the clamping mechanism 3 are also rotating bodies or circular, thus all having a defined axial and radial direction. Similarly, to satisfy the axial movement space of the locking block 33, the draft angles of the two adjacent surfaces between the conical sleeve 31 and the locking block 33 are set to be consistent, ensuring that the locking block 33 clamps the bladder 4 during movement.

[0076] Similarly, the draft angles between the two can be different, as long as the minimum inner diameter of the top of the tapered sleeve 31 is less than the maximum inner diameter of the bottom of the locking block 33. At this time, the adjacent surfaces of the locking blocks 33 with different draft angles and the tapered sleeve 31 are in line contact. Compared with the locking blocks 33 and the tapered sleeve 31 with the same draft angle, the movement process of the locking blocks 33 with different draft angles from the tapered sleeve 31 is not as stable as that of the locking blocks 33 with the same draft angle from the tapered sleeve 31, but it can still meet the radial dimension control of forming a receiving space between the inner cores 34.

[0077] Please see Figure 11 In one embodiment, the connecting plate 32 is provided with a waist-shaped hole 321 for mounting the locking block 33 and a positioning hole 322 for mounting the inner core 34. The waist-shaped hole 321 is arranged radially along the connecting plate 32.

[0078] Specifically, in this embodiment of the invention, the locking block 33 is composed of eight petal blocks 331. The connecting plate 32 connects the eight petal locking blocks 33 to the main body of the clamping mechanism 3 (i.e., the housing and other components). The oblong hole 321 machined on the connecting plate 32 connects the eight petal blocks 331 of the locking block 33 to the connecting plate 32 of the clamping mechanism 3 by screws. The radial dimension of the oblong hole 321 on the connecting plate 32 is the distance the screw moves, ensuring the radial movement space of the eight petal blocks 331 in the locking block 33. The draft angle between the locking block 33 and the tapered sleeve 31 ensures the axial movement space of the petal blocks 331, thus enabling the clamping and releasing function of the bladder 4.

[0079] Please see Figure 12 In one embodiment, the locking block 33 includes a plurality of radially divided petal blocks 331, each adjacent petal block 331 being connected by a spring, and each petal block 331 being mounted in a waist-shaped hole 321 by a screw.

[0080] Specifically, in this embodiment of the invention, the locking block 33 is evenly divided into eight segments 331. These eight segments 331 can be formed by CNC machining and wire cutting of a single piece of material into eight segments. Each segment 331 in the locking block 33 has the same draft angle as the tapered sleeve 31. These segments, together with the inner core 34, clamp the bladder 4 when the piston rod 21 of the cylinder 2 moves upward, creating a seal and preventing it from slipping out. Each segment 331 is connected by a standard spring, causing adjacent segments 331 to move further apart. This creates a sufficiently large accommodating space between the clamping mechanism 3 and the inner core 34. During the lifting action, the expansion and contraction of the springs bring adjacent segments 331 closer together, satisfying the clamping of the end of the bladder 4. Furthermore, when the bladder 4 needs to be removed, during the repositioning process of the piston rod 21 of the cylinder 2, the spring tension can be used to separate the segments 331, releasing the clamped end of the bladder 4, thus facilitating the removal of the bladder 4.

[0081] Please see Figure 13 In one embodiment, the outer diameter of the inner core 34 is equal to the inner diameter of the bladder 4. Anti-slip teeth are provided on the outer diameter surface of the inner core 34. A screw hole 341 for connecting the piston rod 21 of the cylinder 2 is provided at the bottom of the inner core 34, and a through hole 342 for connecting the screw hole 341 is provided on the upper end face of the inner core 34 to communicate with the air hole 210 opened on the piston rod 21 of the cylinder 2.

[0082] Specifically, by ensuring that the machining dimensions of the inner core 34 (i.e., the diameter corresponding to the outer surface of the inner core 34) are consistent with the inner diameter of the bladder 4, it is convenient for the bladder 4 to be fitted into the inner core 34 and then clamped with the locking block 33. Furthermore, the outer diameter of the inner core 34 is machined with non-sharp, anti-slip teeth, increasing the clamping force between it and the bladder 4. A threaded hole is also machined at the bottom of the inner core 34 to connect the entire clamping mechanism 3 to the cylinder 2, and corresponding air holes 210 are machined on the inner upper surface to deliver the air source from the cylinder 2 to the bladder 4 for inflation and pressurization.

[0083] Furthermore, when the bladder 4 is placed into the receiving space, the locking block 33, the inner core 34, and the bladder 4 are in a clearance fit. This facilitates the loading and unloading of workpieces.

[0084] Furthermore, it also includes a drive unit 5, which is mounted on the frame 1 and is used to adjust the distance between the two cylinders 2.

[0085] Specifically, the driving component 5 can be an electric cylinder, which can be directly mounted on the frame 1. By controlling the distance between the upper and lower ends of the frame 1, the distance between the cylinders 2 is adjusted, thereby achieving distance control between the upper and lower clamping mechanisms 3. In this embodiment of the invention, the electric cylinder is mounted on the upper part of the frame 1 and connected to the upper clamping mechanism 3 through the cylinder 2, thus achieving the distance adjustment function, which will not be elaborated further here. Similarly, the piston rod 21 of the cylinder 2 is machined with an air hole 210 and an air nozzle mounting hole for inflating the bladder 4. A cylinder 2 with a diameter of 200mm and a stroke of 25mm can be selected to avoid the situation where the cylinder diameter of the cylinder 2 is too small, which may cause the bladder to malfunction due to excessive air pressure during inflation.

[0086] In summary, the air spring support ring assembly method and assembly fixture provided by this invention clamps and seals the bladder at both ends of the bladder. During the inflation process, the support ring inserted into the bladder falls to its corresponding assembly position on the bottom horizontal end face. Then, the bladder deflates and contracts to wrap the support ring, completing the assembly. This improves the assembly quality and efficiency of the support ring within the bladder. Furthermore, by utilizing the support ring's free fall under gravity to the end face of the bottom clamping mechanism after the bladder inflates, it maintains a horizontal and upright position, meeting the assembly accuracy requirements of the support ring within the bladder. Simultaneously, during the assembly process, only manual operation is required to place the upper and lower ends of the bladder into the corresponding clamping mechanisms and simultaneously insert the support ring. The remaining assembly steps can be completed by operating the assembly fixture, achieving one-time assembly and reducing labor intensity.

[0087] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A method for assembling an air spring support ring, characterized in that, include: S10. Place both ends of the bladder (4) into the clamping mechanism (3) for clamping and sealing, and insert the support ring (40) into it during the clamping process of the bladder (4); S20. Inflate and pressurize the sealed bladder (4) to expand the bladder (4) to a diameter larger than that of the support ring (40), so that the support ring (40) falls onto the end face of the clamping mechanism (3) at the bottom of the bladder (4). S30. After depressurizing the bladder (4), remove it from the clamping mechanism (3). At this time, the bladder (4) is restored and wraps around the support ring (40), thus completing the assembly of the support ring (40).

2. The method according to claim 1, characterized in that, The step S10 further includes: S11. Place the lower end of the bladder (4) into the clamping mechanism (3) below, and drive the clamping mechanism (3) through the cylinder (2) to clamp the bladder (4) for sealing, and make the lower end face of the bladder (4) fit horizontally with the end face of the clamping mechanism (3) below. S12. Insert the support ring (40) into the upper end of the bladder (4), and then put the upper end of the bladder (4) into the clamping mechanism (3) above. Drive the clamping mechanism (3) through the cylinder (2) to clamp the bladder (4) and seal it, so that the bladder (4) is in a sealed state.

3. The method according to claim 1, characterized in that, The step S20 further includes: S21. Insert the piston rod (21) of the cylinder (2) into the bladder (4) along the clamping mechanism (3), and inflate and pressurize the bladder through the air hole (210) on the piston rod (21); S22. During the inflation and pressurization of the airbag, the clamping mechanism (3) above moves downward to compress the airbag to its maximum diameter.

4. An assembly fixture for an air spring support ring, characterized in that, include: Rack (1); Cylinder (2), two cylinders (2) arranged in opposite directions are respectively installed at the upper and lower ends of the frame (1); as well as Clamping mechanism (3), two clamping mechanisms (3) arranged in opposite directions are respectively mounted on two cylinders (2), the clamping mechanism (3) forms a receiving space for clamping the air spring bladder (4), and the size of the receiving space is adjusted by driving the clamping mechanism (3) through the cylinder (2), and the end face of the lower clamping mechanism (3) is in a horizontal position; In this embodiment, at least one of the piston rods (21) of the cylinder (2) is provided with an air hole (210), and the piston rod (21) of the cylinder (2) is connected to the interior of the clamped airbag.

5. The tooling according to claim 4, characterized in that, The clamping mechanism (3) includes: A tapered sleeve (31) is connected to the cylinder body of the cylinder (2) through the housing of the clamping mechanism (3); A connecting plate (32) is installed inside the tapered sleeve (31) and sleeved on the piston rod (21) of the cylinder (2); A locking block (33) is mounted on the connecting plate (32), and the outer side of the locking block (33) is adjacent to the inner side of the tapered sleeve (31); and The inner core (34) is mounted on the connecting plate (32) and sleeved on the end of the piston rod (21) of the cylinder (2), and is located inside the locking block (33); The outer side of the locking block (33) and the inner side of the cone sleeve (31) are provided with the same draft angle, and the gap formed between the locking block (33) and the inner core (34) is the accommodating space for clamping the bladder (4).

6. The tooling according to claim 5, characterized in that, The connecting plate (32) has an oblong hole (321) for mounting the locking block (33) and a positioning hole (322) for mounting the inner core (34). The oblong hole (321) is arranged radially along the connecting plate (32).

7. The tooling according to claim 6, characterized in that, The locking block (33) includes a plurality of radially divided segments (331), each adjacent segment (331) is connected by a spring, and each segment (331) is mounted in the waist-shaped hole (321) by a screw.

8. The tooling according to claim 5, characterized in that, The outer diameter of the inner core (34) is equal to the inner diameter of the bladder (4). Anti-slip teeth are provided on the outer diameter surface of the inner core (34). A screw hole (341) for connecting the piston rod (21) of the cylinder (2) is provided at the bottom of the inner core (34). A through hole (342) for connecting the screw hole (341) is provided on the upper end face of the inner core (34) to communicate with the air hole (210) opened on the piston rod (21) of the cylinder (2).

9. The tooling according to claim 5, characterized in that, When the bladder (4) is placed into the receiving space, the locking block (33), the inner core (34) and the bladder (4) are in a clearance fit.

10. The tooling according to claim 5, characterized in that, It also includes a drive unit (5), which is mounted on the frame (1) and is used to adjust the distance between the two cylinders (2).

Images