Vacuum push ring apparatus and method for rear air spring assembly

Abstract

The application discloses a kind of vacuum push ring equipment and method for rear air spring assembly, including rack base, wherein rack base upper end is equipped with table panel;Capsule skin vacuum suction assembly and capsule skin bulging assembly are provided above table panel, wherein capsule skin bulging assembly is arranged side by side with capsule skin vacuum suction assembly;Support ring feeding assembly is also provided on table panel, wherein one side of support ring feeding assembly is equipped with ring sending component.The application fixes capsule skin by vacuum suction mode, effectively avoids the deformation and wear problem of air bag caused by traditional forced pushing mode;Wherein, capsule skin vacuum suction assembly is fixed by the design of vacuum cylinder and forming suction cylinder, and uses negative pressure suction principle to accurately suction and fix capsule skin, which not only guarantees the stability of air bag in assembly process, but also reduces the damage risk caused by physical contact, ensures that the assembly process of support ring will not cause damage to capsule skin, greatly improves assembly precision and finished product qualification rate.

Description

Technical Field

[0001] This invention relates to the field of automotive air spring assembly equipment technology, and in particular to a vacuum push-ring device and method for assembling rear air springs. Background Technology

[0002] In recent years, as car users have increasingly higher standards for ride comfort, air springs have been widely used in vehicle suspension systems. In particular, bladder-type air springs, by flexibly adjusting their internal gas pressure, can automatically adjust the vehicle height, effectively mitigating severe vibrations during driving and significantly improving the passenger experience. The core component of this type of bladder-type air spring is a flexible rubber air bladder. However, due to the insufficient rigidity of the material itself, the air spring bladder in the rear suspension needs an internal support ring to enhance its structural stability and installation support.

[0003] In the design evolution of bladder-type air springs, to ensure precise positioning between the outer casing and the bladder skin, a technical solution was introduced that embeds a large-sized steel ring into the small-diameter bladder skin as an inner support ring, and then clamps it to the outer casing. However, this design faces a severe challenge: the outer diameter of the support ring is much larger than the inner diameter of the airbag in its natural state, making the assembly process of the support ring extremely difficult. In current industrial practice, a guide pressure head is usually used to directly press down, forcibly pushing the support ring into the airbag; however, this method has significant drawbacks: first, the airbag skin lacks rigidity and is prone to unexpected vertical deformation during the expansion process under pressure; second, the bladder skin is easily worn during the pushing process, which not only affects the installation accuracy of the support ring but also significantly reduces the pass rate of the finished airbag, becoming a key factor restricting production efficiency and product quality. Summary of the Invention

[0004] The purpose of this invention is to provide a vacuum push ring device and method for assembling rear air springs, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A vacuum push-ring device for assembling rear air springs includes a frame base, with an upper frame above the frame base; the front end of the upper frame is an operating area, and transparent protective doors are installed at the left, right, and rear ends of the upper frame; an electrical cabinet is located on the left side of the upper frame, and an industrial control integrated computer is located on the right side of the upper frame; a table is installed on the upper end of the frame base, and a track-embedded screw slide is provided above the table; the mounting base of the track-embedded screw slide is fixedly connected to the table, and a mounting bracket is fixedly installed above the slide of the track-embedded screw slide. The device is equipped with a support base; a U-shaped fixing frame is fixedly installed above the support base, wherein a vacuum adsorption component for the capsule skin is provided above the U-shaped fixing frame, and the vacuum adsorption component for the capsule skin is fixedly connected to the upper end of the U-shaped fixing frame through a support plate; a capsule skin expansion component is provided on the platform, wherein the capsule skin expansion component and the vacuum adsorption component for the capsule skin are arranged side by side; a support ring feeding component is provided on the side of the vacuum adsorption component for the capsule skin away from the expansion component for the capsule skin, wherein a ring feeding component is provided on the side of the support ring feeding component, and the ring feeding component is located below the support ring feeding component;

[0007] The vacuum adsorption assembly includes a vacuum cylinder, within which a shaped adsorption cylinder is fitted. The outer diameter of the shaped adsorption cylinder is smaller than the inner diameter of the vacuum cylinder, forming a negative pressure adsorption chamber between the vacuum cylinder and the shaped adsorption cylinder. The shaped adsorption cylinder has several pores on its cavity wall, through which the negative pressure adsorption chamber communicates with the inner cavity of the shaped adsorption cylinder. A first sealing ring is provided at the upper end of the shaped adsorption cylinder to seal the upper end of the negative pressure adsorption chamber. The inner wall of the first sealing ring is fixedly connected to the upper end of the shaped adsorption cylinder, and the outer wall of the first sealing ring is fixedly connected to the upper end of the vacuum cylinder. A second sealing ring is provided at the lower end of the shaped adsorption cylinder to seal the lower end of the negative pressure adsorption chamber. The inner wall of the second sealing ring is fixedly connected to the lower end of the shaped adsorption cylinder, and the outer wall of the second sealing ring is fixedly connected to the lower end of the vacuum cylinder. A first sealing assembly is provided above the vacuum cylinder, and a second sealing assembly is provided below the vacuum cylinder.

[0008] The second sealing ring is provided with a sealing expansion mold assembly, which is movably connected to the second sealing ring. The sealing expansion mold assembly includes several expansion petals, which are evenly distributed along the inner wall of the second sealing ring, and there is a movable gap between two adjacent expansion petals. A positioning rod is provided on the side of the expansion petal near the second sealing ring, and the other end of the positioning rod passes through the second sealing ring and extends into it. A return spring is provided inside the second sealing ring at a position corresponding to the positioning rod, and one end of the return spring is fixedly connected to the second sealing ring, and the other end of the return spring is fixedly connected to the positioning rod. An inclined surface is provided on the side of the expansion petal away from the second sealing ring, and several expansion petals surround to form a conical through hole.

[0009] Preferably, the first sealing assembly includes a first fixing plate, wherein the first fixing plate has a first mounting hole in the middle that matches the outer diameter of the upper end of the vacuum cylinder, and the first mounting hole is fixedly connected to the vacuum cylinder; first telescopic cylinders are symmetrically arranged at both ends of the first fixing plate, wherein the cylinder body of the first telescopic cylinder is fixedly connected to the first fixing plate; the piston rod of the first telescopic cylinder passes through the first fixing plate upward, wherein a first lifting plate is fixedly connected to the top of the piston rod of the first telescopic cylinder; a feed hole is opened in the middle of the first lifting plate at a position corresponding to the upper end of the vacuum cylinder, wherein a sealing pressure ring is provided around the lower end of the feed hole.

[0010] Preferably, the upper end of the sealing ring is fixedly connected to the feed hole, and the lower end of the sealing ring extends downward into the inner cavity of the forming adsorption cylinder; the outer wall of the sealing ring is provided with a first inclined surface along its circumference, and the inner wall of the upper end of the forming adsorption cylinder is provided with a second inclined surface corresponding to the first inclined surface along its circumference, and a gap is provided between the first inclined surface and the second inclined surface.

[0011] Preferably, a first guide sleeve is installed at each of the four corners of the first fixed plate, and a first guide rod is installed at each of the four corners of the first lifting plate, and the first guide rod is adapted to the first guide sleeve.

[0012] Preferably, the second sealing assembly includes a second fixing plate, wherein the second fixing plate has a second mounting hole in the middle that matches the outer diameter of the lower end of the vacuum cylinder, and the second mounting hole is fixedly connected to the outer wall of the vacuum cylinder; second telescopic cylinders are symmetrically arranged above both ends of the second fixing plate, wherein the cylinder body of the second telescopic cylinder is fixedly connected to the second fixing plate; the piston rod of the second telescopic cylinder passes downward through the second fixing plate, wherein the top end of the piston rod of the second telescopic cylinder is fixedly connected to a second lifting plate; a conical braking platform is provided in the middle of the second lifting plate, wherein the upper end of the conical braking platform extends upward into the conical through hole; the outer wall of the conical braking platform abuts against the inclined surface opened in the inner wall of the expansion valve, wherein the conical braking platform is used to drive the expansion valve to expand or close.

[0013] Preferably, a second guide sleeve is installed at each of the four corners of the second fixed plate, and a second guide rod is installed at each of the four corners of the second lifting plate, and the second guide rod is adapted to the second guide sleeve.

[0014] Preferably, the vacuum cylinder is equipped with a gas path connecting pipe, which is connected to the negative pressure adsorption chamber; the frame base is equipped with a negative pressure vacuum pump, wherein the air inlet of the negative pressure vacuum pump is connected to the gas path connecting pipe through a pipeline.

[0015] Preferably, the sac expansion assembly includes a first support frame, wherein the lower end of the first support frame is fixedly connected to the platform; a first linear guide rail is provided at the front end of the first support frame, wherein a first guide rail slider is slidably connected on the first linear guide rail; a first lifting seat is provided on the first guide rail slider, wherein a right-angle support arm is fixedly installed at the upper end of the first lifting seat; the lower end of the right-angle support arm is fixedly connected to the first lifting seat, wherein an expansion sleeve is fixedly installed at the upper end of the right-angle support arm; the expansion sleeve is vertically arranged, wherein the expansion sleeve is located directly above the vacuum cylinder.

[0016] Preferably, a first servo electric cylinder is provided below the first lifting seat, wherein the first servo electric cylinder is vertically arranged; the lower end of the cylinder body of the first servo electric cylinder passes through the table panel and is fixedly connected to the frame base, wherein the top end of the piston rod of the first servo electric cylinder is fixedly connected to the lower end of the first lifting seat.

[0017] Preferably, an air inlet is provided at the upper end of the expansion sleeve, and an air pump is installed on the frame base; the air pump is connected to the air inlet through a pipeline.

[0018] Preferably, the support ring feeding assembly includes a second support frame, wherein the lower end of the second support frame is fixedly connected to the table panel; a second linear guide rail is provided at the front end of the second support frame, wherein a second guide rail slider is slidably connected on the second linear guide rail; a second lifting seat is provided on the second guide rail slider, wherein a suspension support seat is provided at the upper end of the second lifting seat; the lower end of the suspension support seat is fixedly connected to the second lifting seat, wherein a servo motor is provided at the upper end of the suspension support seat; the body of the servo motor is fixedly connected to the suspension support seat, wherein the output shaft of the servo motor passes through the top of the suspension support seat and extends upward; a rotating arm is provided above the suspension support seat, wherein the lower end of the rotating arm is fixedly connected to the output shaft of the servo motor through a flange; two sets of three-finger grippers with the same structure are respectively installed at both ends of the rotating arm, wherein the three-finger grippers are positioned above the vacuum cylinder.

[0019] Preferably, a second servo electric cylinder is provided below the second lifting seat, wherein the second servo electric cylinder is vertically arranged; the lower end of the cylinder body of the second servo electric cylinder passes through the table panel and is fixedly connected to the frame base, wherein the top end of the piston rod of the second servo electric cylinder is fixedly connected to the lower end of the second lifting seat.

[0020] Preferably, the ring feeding assembly includes a fixed support, wherein a worm gear screw jack is provided above the fixed support; a drive motor is arranged side by side on one side of the worm gear screw jack, wherein the output shaft of the drive motor is fixedly connected to the worm input end of the worm gear screw jack through a coupling; a base plate is fixedly connected to the upper end of the lifting screw of the worm gear screw jack, wherein a support ring clamp is provided above the base plate, and the support ring clamp is fixedly connected to the base plate through a support column.

[0021] Preferably, limiting guide shafts are symmetrically installed on both sides of the lower end of the base plate, wherein a linear bearing adapted to the limiting guide shaft is provided on the fixed support, and the limiting guide shaft passes through the linear bearing and is slidably connected to it.

[0022] A vacuum push ring method for assembling a rear air spring includes the following steps:

[0023] Step S10, Device Startup and Initialization:

[0024] Turn on the power switch of the electrical cabinet, ensure that all circuit connections are normal, start the industrial control computer, enter the equipment control interface, and check whether the parameter settings are correct; confirm that all sensors, cylinders, motors and other automation components are in standby mode and there are no abnormal alarms.

[0025] Place the rear air spring bladders to be assembled neatly on the designated rack, ensuring sufficient quantity; check the specifications and quality of the support rings to ensure they match the bladders, and place them in the storage box.

[0026] Step S20, Skin Positioning and Fixation:

[0027] The drive track embedded screw slide table moves the capsule vacuum adsorption assembly forward to the operating area, and puts the prepared capsule into the inner cavity of the forming adsorption cylinder through the feed hole at the top of the vacuum cylinder, so that the lower end of the capsule is inserted between the inner wall of the forming adsorption cylinder and the outer wall of the expansion valve.

[0028] The second telescopic cylinder on the second sealing assembly is activated, which drives the second lifting plate to move downward. This causes the conical brake platform installed in the middle of the second lifting plate to move downward along the conical through hole. The outer wall of the conical brake platform abuts against the inner wall of the expansion valve and drives the expansion valve to expand. This causes the outer wall of the expansion valve to squeeze the bladder skin, making it tightly adhere to the inner wall of the forming adsorption cylinder, thus completing the sealing of the lower end of the bladder skin.

[0029] Step S30, swelling of the sac skin:

[0030] The drive track-embedded screw slide moves the bladder vacuum adsorption assembly to below the expansion sleeve, so that the expansion sleeve is precisely aligned with the feed hole at the top of the vacuum cylinder.

[0031] Start the first servo electric cylinder, which drives the right-angle support arm to move downward along the first linear guide rail, so that the right-angle support arm drives the expansion sleeve to move downward synchronously and insert it into the bladder skin through the feed hole;

[0032] Start the air pump and inflate the expansion sleeve through the air inlet. As the gas is introduced, the expansion sleeve gradually expands and pushes the shell outward to fit against the inner wall of the formed adsorption cylinder.

[0033] Step S40, Vacuum adsorption positioning:

[0034] After the capsule skin is attached to the inner wall of the formed adsorption cylinder in step S30, the negative pressure system of the vacuum cylinder is started and connected to the negative pressure vacuum pump through the gas connection pipe to ensure that the pressure in the negative pressure adsorption chamber reaches the preset value.

[0035] When the gas connection tube is turned on, the negative pressure adsorption chamber is connected to the inner cavity of the molded adsorption cylinder through the air hole, forming a stable adsorption force that firmly adsorbs the capsule skin onto the inner wall of the molded adsorption cylinder.

[0036] The first telescopic cylinder on the first sealing assembly is activated, which drives the first lifting plate to move downward, causing the first lifting plate to move the sealing pressure ring downward and insert it into the inner cavity of the bladder skin; the outer wall of the sealing pressure ring cooperates with the inner wall of the upper end of the molded adsorption cylinder to complete the sealing of the upper end of the bladder skin.

[0037] Turn off the air pump and release the gas inside the expansion sleeve to separate the expansion sleeve skin; start the first servo electric cylinder, which drives the right-angle support arm to move upward along the first linear guide rail, so that the right-angle support arm drives the expansion sleeve to rise synchronously and move out of the skin.

[0038] Step S50: Support ring loading and positioning:

[0039] Place the support ring in the support ring clamp and clamp it in place. Start the drive motor of the ring feeding assembly. Drive the worm gear screw jack through the coupling to make the support ring rise to the preset height by the support ring clamp installed on the bottom plate and the top.

[0040] Start the servo motor, which drives the rotating arm to rotate, causing the three-finger gripper at one end of the rotating arm to rotate above the support ring clamp.

[0041] Start the second servo electric cylinder, which drives the rotating arm to move downward along the second linear guide rail. This causes the rotating arm to move the three-finger gripper downward in sync. When the gripper head of the three-finger gripper descends and inserts into the support ring fixture, the three-finger gripper opens to clamp the support ring. Start the second servo electric cylinder again, which drives the rotating arm to move upward along the second linear guide rail. This causes the rotating arm to move the three-finger gripper upward in sync, completing the removal of the support ring.

[0042] Step S60, Support Ring Installation:

[0043] The drive track-embedded screw slide moves the vacuum cylinder with the adsorbed capsule skin from under the expansion sleeve and moves it to the designated preset position;

[0044] Start the servo motor, which drives the rotating arm to rotate, causing the three-finger gripper holding the support ring at one end of the rotating arm to rotate above the vacuum cylinder. During this process, it is necessary to pay close attention to the feedback signal of the sensor to ensure that the support ring and the feed hole are accurately positioned.

[0045] The second servo electric cylinder is activated, which drives the rotating arm to move downward along the second linear guide rail. This causes the rotating arm to drive the three-finger gripper holding the support ring to insert into the bladder through the feed hole, and precisely move the support ring to a preset height so that the outer wall of the support ring abuts against the inner wall of the bladder. At the same time, the three-finger gripper remains inside the bladder.

[0046] Step S70, Removal of finished product skin:

[0047] The first telescopic cylinder on the first sealing assembly is activated, which drives the first lifting plate to move upward, causing the first lifting plate to move the sealing pressure ring upward and separate it from the inner cavity of the bladder skin. At the same time, the second telescopic cylinder on the second sealing assembly is activated, which drives the second lifting plate to move upward, causing the conical brake platform installed in the middle of the second lifting plate to move upward along the conical through hole to release the pressure on the expansion valve, so that the expansion valve resets and disengages from the pressure seal on the lower end of the bladder skin.

[0048] Turn off the negative pressure source of the vacuum adsorption system, slowly release the adsorption force in the negative pressure adsorption chamber, and slowly complete the release and clamping of the capsule skin on the support ring through the controllable decrease of negative pressure. Finally, release and restore the shape of the capsule skin. The elastic recovery process of the capsule skin will not change the position of the support ring inside it.

[0049] The three-finger gripper opens to clamp the support ring with the capsule skin installed. The second servo electric cylinder is activated, which drives the rotating arm to move upward along the second linear guide rail. The rotating arm drives the three-finger gripper to remove the capsule skin from the molded adsorption cylinder and place it in the finished product area for further processing or packaging, thus completing the assembly.

[0050] Compared with existing technologies, the present invention offers the following advantages: The present invention uses vacuum adsorption to fix the air spring skin, effectively avoiding the deformation and wear problems caused by traditional forced pushing methods. Specifically, the air spring skin vacuum adsorption assembly, through the design of a vacuum cylinder and a forming adsorption cylinder, utilizes the principle of negative pressure adsorption to precisely adsorb and fix the air spring skin. This ensures the stability of the air spring during assembly and reduces the risk of damage from physical contact, ensuring that the assembly of the support ring will not damage the air spring skin, greatly improving assembly accuracy and product qualification rate. Furthermore, the design of the sealing expansion mold assembly and the expansion sleeve allows for flexible adjustment according to air springs of different sizes, offering strong adaptability and meeting the production needs of different products. Precise control of various parameters via an integrated industrial control computer, combined with sensor feedback, enables intelligent management of the assembly process, improving production efficiency and product quality consistency. The integration of an electrical cabinet, an integrated industrial control computer, and multiple automation components automates the entire process of support ring feeding, ring delivery, expansion, and vacuum adsorption, significantly improving production efficiency and providing a more efficient and reliable solution for the manufacturing of automotive air springs. Attached Figure Description

[0051] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0052] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0053] Figure 3 This is a schematic diagram of the connection between the track-embedded screw slide and the vacuum adsorption assembly of the capsule skin according to the present invention;

[0054] Figure 4 This is a schematic diagram of the structure of the vacuum adsorption component for the capsule skin of the present invention;

[0055] Figure 5 yes Figure 4 The structural cross-sectional view of AA is shown below;

[0056] Figure 6 This is a cross-sectional view of the structure of the capsule skin and the vacuum adsorption component of the present invention.

[0057] Figure 7 This is a schematic diagram of the structure of the sealing expansion mold assembly of the present invention;

[0058] Figure 8 This is a schematic diagram of the structure of the sac expansion component of the present invention;

[0059] Figure 9 This is a schematic diagram of the structure of the support ring feeding assembly of the present invention;

[0060] Figure 10 This is a schematic diagram of the ring delivery assembly of the present invention.

[0061] The components include: 1. Frame base; 2. Upper frame; 3. Transparent protective door; 4. Electrical cabinet; 5. Industrial control all-in-one computer; 6. Tabletop; 7. Track-embedded screw slide; 8. Support base; 9. Vacuum adsorption assembly; 901. Vacuum cylinder; 902. Molded adsorption cylinder; 903. Negative pressure adsorption chamber; 904. Air hole; 905. First sealing ring; 906. Second sealing ring; 10. "U" shaped fixing frame; 11. Support plate; 12. Vacuum bulging assembly; 1201. First support frame; 1202. First linear guide rail; 1203. First guide... 1204. Rail slider; 1205. First lifting seat; 1206. Right-angle support arm; 1207. Expanding rubber sleeve; 1208. First servo electric cylinder; 13. Support ring feeding assembly; 1301. Second support frame; 1302. Second linear guide rail; 1303. Second guide rail slider; 1304. Second lifting seat; 1305. Suspension support seat; 1306. Servo motor; 1307. Rotating arm; 1308. Three-finger gripper; 1309. Second servo electric cylinder; 14. Ring feeding assembly; 1401. Fixed support; 1402. Worm gear screw lifting assembly. 1403. Drive motor; 1404. Worm gear; 1405. Lifting screw; 1406. Base plate; 1407. Support ring clamp; 1408. Support column; 1409. Limiting guide shaft; 1410. Linear bearing; 15. First sealing assembly; 1501. First fixing plate; 1502. First mounting hole; 1503. First telescopic cylinder; 1504. First lifting plate; 1505. Feed hole; 1506. Sealing pressure ring; 1507. First guide sleeve; 1508. First guide rod; 16. Second sealing assembly; 1601. Second fixed plate; 1602, second mounting hole; 1603, second telescopic cylinder; 1604, second lifting plate; 1605, conical brake platform; 1606, second guide sleeve; 1607, second guide rod; 17, sealing expansion mold assembly; 1701, expansion flap; 1702, positioning rod; 1703, return spring; 1704, conical through hole; 18, first inclined surface; 19, second inclined surface; 20, air circuit connecting pipe; 21, negative pressure vacuum pump; 22, air inlet; 23, air pump; 24, storage box; 25, bladder skin; 26, support ring. Detailed Implementation

[0062] The present invention will now be described in further detail with reference to the accompanying drawings.

[0063] Please refer to the following: Figures 1 to 10 To achieve the above objectives, the present invention provides the following technical solution:

[0064] A vacuum push ring assembly device for rear air springs includes a frame base 1, with an upper frame 2 above the frame base 1; the front end of the upper frame 2 is an operating area, and transparent protective doors 3 are installed at the left and right ends and the rear end of the upper frame 2 respectively; an electrical cabinet 4 is located on the left side of the upper frame 2, and an industrial control all-in-one computer 5 is located on the right side of the upper frame 2; a table panel 6 is installed on the upper end of the frame base 1, and a track-embedded screw slide 7 is installed above the table panel 6; a fixed seat for the track-embedded screw slide 7 is fixedly connected to the table panel 6, and a support seat 8 is fixedly installed above the slide of the track-embedded screw slide 7; a support seat 8 is fixedly installed above the support seat 8. A U-shaped fixing frame 10 is provided, with a vacuum adsorption component 9 for the capsule skin on the top of the U-shaped fixing frame 10. The vacuum adsorption component 9 for the capsule skin is fixedly connected to the upper end of the U-shaped fixing frame 10 through a support plate 11. A capsule skin expansion component 12 is provided on the table panel 6, with the capsule skin expansion component 12 and the vacuum adsorption component 9 for the capsule skin being arranged side by side. A support ring feeding component 13 is provided on the side of the vacuum adsorption component 9 away from the capsule skin expansion component 12. A ring feeding component 14 is provided on the side of the support ring feeding component 13, and the ring feeding component 14 is located below the support ring feeding component 13. A storage box 24 is provided at the front end of the ring feeding component 14.

[0065] The basic frame consists of a base 1 and an upper frame 2. A platform 6 is installed on top of the base 1, serving as an operating platform. The front of the upper frame 2 is designed as an operating area for easy assembly work. Transparent protective doors 3 are installed at the left, right, and rear ends of the upper frame 2, providing safety protection while allowing the operator to observe the internal working conditions. An electrical cabinet 4 is located on the left side of the upper frame 2 for installing electrical components and control circuits. An integrated industrial control computer 5 is located on the right side of the upper frame 2, serving as the control center for monitoring and regulating the equipment's operating status. An embedded screw slide 7 is installed above the platform 6 to achieve precise horizontal movement of the vacuum adsorption assembly 9. The screw slide's fixed base is fixedly connected to the platform 6 to ensure its stability. A support base 8 is fixed above the slide, and a U-shaped fixing frame 10 is installed above the support base 8. The vacuum adsorption assembly 9 is located above the U-shaped fixing frame 10. Plate 11 is fixedly connected to the upper end of the "U"-shaped fixing frame 10. The vacuum adsorption assembly 9 uses the vacuum adsorption principle to fix and move the air spring. The platform 6 is equipped with an air spring bulging assembly 12 for bulging the air spring to meet assembly requirements. The air spring bulging assembly 12 and the vacuum adsorption assembly 9 are arranged side by side for easy collaborative operation. A support ring feeding assembly 13 is provided on the side of the vacuum adsorption assembly 9 away from the air spring bulging assembly 12 for feeding the support ring. Below the support ring feeding assembly 13 is a ring feeding assembly 14 for accurately feeding the support ring to the designated position for subsequent assembly operations. By integrating multiple functional modules such as electrical control, vacuum adsorption, moving slide, and air spring processing, the assembly process of the rear air spring is automated and precisely controlled. The transparent protective door 3 and the industrial control integrated computer 5 also provide a good operating view and monitoring means, ensuring the safety and reliability of the equipment.

[0066] The vacuum adsorption assembly 9 includes a vacuum cylinder 901, in which a shaped adsorption cylinder 902 is fitted inside the vacuum cylinder 901. The outer diameter of the shaped adsorption cylinder 902 is smaller than the inner diameter of the vacuum cylinder 901, and a negative pressure adsorption chamber 903 is formed between the vacuum cylinder 901 and the shaped adsorption cylinder 902. A plurality of air holes 904 are provided on the cavity wall of the shaped adsorption cylinder 902, and the negative pressure adsorption chamber 903 communicates with the inner cavity of the shaped adsorption cylinder 902 through the air holes 904. A first sealing ring 905 is provided at the upper end of the shaped adsorption cylinder 902, wherein the first sealing ring 905 is used to seal the upper end of the negative pressure adsorption chamber 903. The inner wall of the first sealing ring 905 is fixedly connected to the upper end of the forming adsorption cylinder 902, and the outer wall of the first sealing ring 905 is fixedly connected to the upper end of the vacuum cylinder 901; a second sealing ring 906 is provided at the lower end of the forming adsorption cylinder 902, and the second sealing ring 906 is used to seal the lower end of the negative pressure adsorption chamber 903; the inner wall of the second sealing ring 906 is fixedly connected to the lower end of the forming adsorption cylinder 902, and the outer wall of the second sealing ring 906 is fixedly connected to the lower end of the vacuum cylinder 901; a first sealing assembly 15 is provided above the vacuum cylinder 901, and a second sealing assembly 16 is provided below the vacuum cylinder 901.

[0067] The vacuum cylinder 901 serves as the main structure of the entire adsorption assembly, its internal design accommodating and supporting the shaped adsorption cylinder 902. The shaped adsorption cylinder 902 is fitted within the inner cavity of the vacuum cylinder 901, its outer diameter slightly smaller than the inner diameter of the vacuum cylinder 901, thus forming an annular negative pressure adsorption chamber 903 between them. The main function of the shaped adsorption cylinder 902 is to directly contact the adsorbed capsule skin and achieve negative pressure adsorption through its pores 904. The pores 904 are located on the cavity wall of the shaped adsorption cylinder 902, serving as channels between the negative pressure adsorption chamber 903 and the inner cavity of the shaped adsorption cylinder 902. The vacuum cylinder 901 is formed by transmitting negative pressure to achieve adsorption of the capsule skin. The first sealing ring 905 and the second sealing ring 906 are respectively disposed at the upper and lower ends of the molded adsorption cylinder 902 to seal the upper and lower ends of the negative pressure adsorption chamber 903, ensuring that the negative pressure in the negative pressure adsorption chamber 903 can act stably and effectively on the molded adsorption cylinder 902, thereby achieving firm adsorption of the capsule skin. The first sealing component 15 and the second sealing component 16 are respectively disposed above and below the vacuum cylinder 901. These sealing components further ensure the airtightness between the vacuum cylinder 901 and the external environment, prevent negative pressure leakage, and improve adsorption efficiency.

[0068] The second sealing ring 906 is provided with a sealing expansion mold assembly 17, which is movably connected to the second sealing ring 906. The sealing expansion mold assembly 17 includes a plurality of expansion petals 1701, which are evenly distributed along the inner wall of the second sealing ring 906, and there is a movable gap between two adjacent expansion petals 1701. A positioning rod 1702 is provided on the side of the expansion petal 1701 near the second sealing ring 906, and the other end of the positioning rod 1702 passes through the second sealing ring 906 and extends into it. A return spring 1703 is provided inside the second sealing ring 906 at a position corresponding to the positioning rod 1702, and one end of the return spring 1703 is fixedly connected to the second sealing ring 906, and the other end of the return spring 1703 is fixedly connected to the positioning rod 1702. An inclined surface is provided on the side of the expansion petal 1701 away from the second sealing ring 906, and the plurality of expansion petals 1701 surround to form a conical through hole 1704.

[0069] The sealing expansion mold assembly 17 is movably connected to the second sealing ring 906 and is used to expand when needed to seal or fix a certain bladder skin. The sealing expansion mold assembly 17 consists of several expansion petals 1701, which are evenly distributed along the inner wall of the second sealing ring 906 to ensure uniformity and stability during expansion. The expansion petals 1701, as the basic unit of the sealing expansion mold assembly 17, are elastic or deformable and can expand outwards under external force. An movable gap is provided between adjacent expansion petals 1701 to allow them to separate during expansion. A positioning rod 1702 is located on the side of the expansion petal 1701 closest to the second sealing ring 906, used to connect the expansion petal 1701 to the second sealing ring 906 and limit the expansion range of the expansion petal 1701. The other end of the positioning rod 1702 passes through... The second sealing ring 906 extends inward therein; the return spring 1703 is located inside the second sealing ring 906 at a position corresponding to the positioning rod 1702, and is used to provide restoring force to the expansion valve 1701 so that it can return to its initial state after the external force is lost. One end of the return spring 1703 is fixedly connected to the second sealing ring 906, and the other end is fixedly connected to the positioning rod 1702; the inclined surface is located on the side of the expansion valve 1701 away from the second sealing ring 906. Several expansion valves 1701 surround to form a conical through hole 1704, allowing the conical brake platform 1605 to pass through. The outer wall of the conical brake platform 1605 abuts against the inclined surface of the inner wall of the expansion valve 1701 and drives the expansion valve 1701 to expand, thereby squeezing the outer wall of the expansion valve 1701 against the bladder skin to complete the tight seal of the lower end of the bladder skin.

[0070] Please refer to the following: Figures 4 to 6As an embodiment of the present invention, the first sealing assembly 15 includes a first fixing plate 1501, wherein the first fixing plate 1501 has a first mounting hole 1502 in the middle that is adapted to the outer diameter of the upper end of the vacuum cylinder 901, and the first mounting hole 1502 is fixedly connected to the outer wall of the vacuum cylinder 901; the first fixing plate 1501 has symmetrically arranged first telescopic cylinders 1503 at both ends below, wherein the cylinder body of the first telescopic cylinder 1503 is fixedly connected to the first fixing plate 1501; the piston rod of the first telescopic cylinder 1503 passes through the first fixing plate 1501 upward, wherein the top end of the piston rod of the first telescopic cylinder 1503 is fixedly connected to a first lifting plate 1504; the first lifting plate 1504 has a feed hole 1505 in the middle corresponding to the upper end of the vacuum cylinder 901, wherein a sealing pressure ring 1506 is provided around the lower end of the feed hole 1505.

[0071] In the above-described scheme, the first fixed plate 1501 serves as the basic component of the first sealing assembly 15. It has a first mounting hole 1502 that matches the outer diameter of the upper end of the vacuum cylinder 901, ensuring that the vacuum cylinder 901 can be stably and accurately installed in this hole, achieving a fixed connection between the two. Two first telescopic cylinders 1503 are provided and symmetrically arranged on both sides below the first fixed plate 1501. The cylinder body of the first telescopic cylinder 1503 is firmly connected to the first fixed plate 1501, providing a power source for the first sealing assembly 15. The first lifting plate 1504 is connected to the first fixed plate 1501 through the piston rod of the first telescopic cylinder 1503. After the piston rod of the first telescopic cylinder 1503 passes upward through the first fixed plate 1501, its top end is fixedly connected to the first lifting plate 1504. This allows the first lifting plate 1504 to move up and down under the drive of the cylinder. At the lower end of the feed hole 1505, a sealing ring 1506 is provided. The function of this sealing ring 1506 is to press tightly against the upper end face or related sealing surface of the vacuum cylinder 901 when the lifting plate descends, thereby ensuring that the vacuum cylinder 901 can maintain a good sealing state during the material feeding process and preventing material leakage or external air from entering. By controlling the extension and retraction of the first telescopic cylinder 1503, the position of the first lifting plate 1504 can be flexibly adjusted, thereby realizing on-demand material feeding and switching of sealing state. The first sealing assembly 15, through its ingenious structural design, realizes the dual functions of material feeding and sealing state, providing a strong guarantee for the normal operation of the vacuum cylinder 901.

[0072] Please refer to the following: Figure 5 , Figure 6In one embodiment of the present invention, the upper end of the sealing ring 1506 is fixedly connected to the feed hole 1505, wherein the lower end of the sealing ring 1506 extends downward into the inner cavity of the forming adsorption cylinder 902; the outer wall of the sealing ring 1506 is provided with a first inclined surface 18 along its circumference, wherein the inner wall of the upper end of the forming adsorption cylinder 902 is provided with a second inclined surface 19 corresponding to the first inclined surface 18 along its circumference, and a gap is provided between the first inclined surface 18 and the second inclined surface 19.

[0073] In the above-described scheme, the sealing ring 1506 is designed to be fixedly connected to the inner ring of the feed hole 1505, which ensures the stability and positional accuracy of the sealing ring 1506 during the lifting process; the lower end of the sealing ring 1506 extends downward into the inner cavity of the forming adsorption cylinder 902, which means that when the lifting plate descends, the sealing ring 1506 can directly contact the inner surface of the forming adsorption cylinder 902, thereby achieving a sealing effect; the first inclined surface 18 is circumferentially arranged along the outer wall of the sealing ring 1506. This design helps the sealing ring 1506 to contact the upper inner wall of the forming adsorption cylinder 902 more smoothly during the descent of the lifting plate, reducing friction and wear; the second inclined surface 19 is located on the forming adsorption cylinder 902. The upper inner wall is circumferentially arranged, corresponding to the first inclined surface 18. This design not only matches the first inclined surface 18 to form a gap, but also provides a guide and buffer area for the sealing ring 1506, making the sealing process smoother. Moreover, there is a gap between the first inclined surface 18 and the second inclined surface 19. The existence of this gap is, on the one hand, to ensure that during the descent of the lifting plate, the sealing ring 1506 can gradually approach and eventually contact the upper inner wall of the molded adsorption cylinder 902, rather than directly impacting it, thereby reducing noise and possible damage. On the other hand, it is used to squeeze and seal the upper end of the bladder skin. The size of the gap needs to be precisely controlled to ensure the sealing effect while also ensuring the smoothness of the lifting process.

[0074] Please refer to the following: Figure 5 , Figure 6 As one embodiment of the present invention, a first guide sleeve 1507 is installed at each of the four corners of the first fixed plate 1501, and a first guide rod 1508 is installed at each of the four corners of the first lifting plate 1504, and the first guide rod 1508 is adapted to the first guide sleeve 1507.

[0075] In the above-described scheme, the first guide sleeve 1507 is installed at the four corners of the first fixed plate 1501, serving as part of the guiding mechanism to provide precise guidance for the lifting movement of the first lifting plate 1504; the first guide rod 1508 is installed at the four corners of the first lifting plate 1504 and is adapted to the first guide sleeve 1507; when the first lifting plate 1504 rises or falls, the first guide rod 1508 slides within the first guide sleeve 1507 to ensure the smoothness and accuracy of the lifting movement; when the piston rod of the first telescopic cylinder 1503 extends or retracts, it drives the first lifting plate 1504 to perform lifting movement; in this... During the process, the first guide rods 1508 at the four corners of the first lifting plate 1504 slide within the first guide sleeves 1507 at the four corners of the first fixed plate 1501. This sliding not only provides stable support for the first lifting plate 1504, but also ensures the linearity and accuracy of the lifting movement. Through the cooperation of the first guide sleeves 1507 and the first guide rods 1508, the first lifting plate 1504 can be effectively prevented from shifting or shaking during the lifting process, thereby improving the stability and reliability of the entire first sealing assembly 15, realizing the smooth, accurate and stable lifting movement, and providing a strong guarantee for the normal operation of the equipment.

[0076] Please refer to the following: Figures 4 to 6 In one embodiment of the present invention, the second sealing assembly 16 includes a second fixing plate 1601, wherein the second fixing plate 1601 has a second mounting hole 1602 in the middle that is adapted to the outer diameter of the lower end of the vacuum cylinder 901, and the second mounting hole 1602 is fixedly connected to the outer wall of the vacuum cylinder 901; second telescopic cylinders 1603 are symmetrically arranged above both ends of the second fixing plate 1601, wherein the cylinder body of the second telescopic cylinder 1603 is fixedly connected to the second fixing plate 1601; the second telescopic cylinder 1603... The piston rod of cylinder 03 passes downward through the second fixed plate 1601, and the top of the piston rod of the second telescopic cylinder 1603 is fixedly connected to the second lifting plate 1604; the second lifting plate 1604 is provided with a conical brake platform 1605 in the middle, and the upper end of the conical brake platform 1605 extends upward into the conical through hole 1704; the outer wall of the conical brake platform 1605 abuts against the inclined surface opened in the inner wall of the expansion valve 1701, and the conical brake platform 1605 is used to drive the expansion valve 1701 to expand or close.

[0077] In the above-described scheme, the second fixing plate 1601 serves as the basic component of the second sealing assembly 16. It has a second mounting hole 1602 that matches the outer diameter of the lower end of the vacuum cylinder 901, ensuring that the vacuum cylinder 901 can be stably and accurately installed in this hole and fixedly connected to the outer wall of the vacuum cylinder 901 through some means (such as bolt connection, welding, etc.). Two second telescopic cylinders 1603 are provided and symmetrically arranged on both sides above the second fixing plate 1601. The cylinder bodies of the second telescopic cylinders 1603 are firmly connected to the second fixing plate 1601, forming the second sealing assembly 16. 6. Provides a power source; the second lifting plate 1604 is connected to the second fixed plate 1601 via the piston rod of the second telescopic cylinder 1603. After the piston rod passes downward through the second fixed plate 1601, its top end is fixedly connected to the second lifting plate 1604, allowing the second lifting plate 1604 to move up and down under the drive of the cylinder; the conical brake platform 1605 is located in the middle of the second lifting plate 1604, and its shape is conical, with its upper end extending upward into the conical through hole 1704 composed of several expansion flaps 1701. The design of the conical brake platform 1605 allows its outer wall to contact the expansion flaps 1701. The inclined surfaces of the inner wall of 01 form a good contact and fit; the inner wall of each expansion valve 1701 has an inclined surface, which matches the outer wall of the conical brake platform 1605; when the piston rod of the second telescopic cylinder 1603 extends, driving the second lifting plate 1604 to descend, the conical brake platform 1605 will also descend accordingly. Since the conical brake platform 1605 is in contact with the inclined surface of the inner wall of the expansion valve 1701, when the conical brake platform 1605 descends, it will push the flaps of the expansion valve 1701 to expand outward, thereby causing the expansion valve 1701 to squeeze and seal the lower end of the bladder skin; conversely, when the second telescopic cylinder 1603 extends, driving the second lifting plate 1604 to descend, the conical brake platform 1605 will also descend accordingly. When the piston rod of the second telescopic cylinder 1603 retracts, causing the second lifting plate 1604 to rise, the conical brake platform 1605 also rises, no longer applying outward thrust to the expansion valve 1701. At this time, the expansion valve 1701 closes due to the action of the return spring 1703, releasing the pressure on the lower end of the bladder. By controlling the telescopic movement of the second telescopic cylinder 1603, the positions of the second lifting plate 1604 and the conical brake platform 1605 can be flexibly adjusted, thereby controlling the expansion and closing state of the expansion valve 1701. This provides a strong guarantee for the normal operation of the vacuum cylinder 901 and its cooperation with the bladder.

[0078] Please refer to the following: Figure 5 , Figure 6 As one embodiment of the present invention, a second guide sleeve 1606 is installed at each of the four corners of the second fixed plate 1601, and a second guide rod 1607 is installed at each of the four corners of the second lifting plate 1604, and the second guide rod 1607 is adapted to the second guide sleeve 1606.

[0079] In the above-described scheme, the second guide sleeve 1606 is installed at the four corners of the second fixed plate 1601. As a key part of the guiding mechanism, the main function of the second guide sleeve 1606 is to guide the lifting and lowering movement of the second lifting plate 1604 and ensure its stability and accuracy. The second guide rod 1607 is installed at the four corners of the second lifting plate 1604 and is adapted to the second guide sleeve 1606. When the second lifting plate 1604 moves up and down, the second guide rod 1607 slides inside the second guide sleeve 1606, thereby providing stable guidance and support. When the piston rod of the second telescopic cylinder 1603 extends or retracts, it drives the second lifting plate 1604 to move up and down. During this process, the second guide rod 1607 at the four corners of the second lifting plate 1604 slides inside the second guide sleeve 1606 at the four corners of the second fixed plate 1601. This sliding not only provides stable support for the second lifting plate 1604, but also ensures the straightness and accuracy of the lifting and lowering movement.

[0080] Please refer to the following: Figure 1 , Figure 5 As one embodiment of the present invention, a gas path connecting pipe 20 is installed on the vacuum cylinder 901, wherein the gas path connecting pipe 20 is connected to the negative pressure adsorption chamber 903; a negative pressure vacuum pump 21 is provided on the frame base 1, wherein the air inlet end of the negative pressure vacuum pump 21 is connected to the gas path connecting pipe 20 through a pipe.

[0081] In the above-described scheme, the vacuum cylinder 901 is one of the core components of the entire system. It contains a negative pressure adsorption chamber 903, which generates negative pressure during operation to adsorb the capsule skin. The gas connection pipe 20 connects the negative pressure adsorption chamber 903 inside the vacuum cylinder 901 to an external negative pressure source, ensuring that negative pressure can be smoothly transmitted to the adsorption chamber 903. The negative pressure vacuum pump 21 is a key device for generating negative pressure; through its operation, it can extract air from the system. The air is drawn out, thus creating a negative pressure in the connected air path. When the negative pressure vacuum pump 21 is started, its air inlet begins to draw air out, which is connected to the air path connecting pipe 20 through the pipeline, thereby drawing out the air in the vacuum cylinder 901. As the air is drawn out, the negative pressure adsorption chamber 903 in the vacuum cylinder 901 gradually forms a negative pressure environment. When the negative pressure reaches a certain level, the negative pressure adsorption chamber 903 of the vacuum cylinder 901 will generate an adsorption force on the capsule skin placed in its inner cavity. This adsorption force is sufficient to fix the object in place, making it difficult for it to move or fall off.

[0082] Please see Figure 9As an embodiment of the present invention, the cystic expansion assembly 12 includes a first support frame 1201, wherein the lower end of the first support frame 1201 is fixedly connected to the table panel 6; a first linear guide rail 1202 is provided at the front end of the first support frame 1201, wherein a first guide rail slider 1203 is slidably connected on the first linear guide rail 1202; a first lifting seat 1204 is provided on the first guide rail slider 1203, wherein a right-angle support arm 1205 is fixedly installed on the upper end of the first lifting seat 1204; the lower end of the right-angle support arm 1205 is fixedly connected to the first lifting seat 1204, wherein an expansion sleeve 1206 is fixedly installed on the upper end of the right-angle support arm 1205; the expansion sleeve 1206 is vertically arranged, wherein the expansion sleeve 1206 is located directly above the vacuum cylinder 901.

[0083] In the above-described scheme, the first support frame 1201 serves as the support structure for the bulging assembly. The lower end of the first support frame 1201 is firmly fixed to the table panel 6, ensuring the stability and reliability of the entire bulging assembly. The first linear guide rail 1202 is installed at the front end of the first support frame 1201 to guide the linear movement of the first guide rail slider 1203. This design allows for precise control of the bulging process, ensuring consistent bulging results. The first guide rail slider 1203 is slidably connected to the first linear guide rail 1202, allowing it to move freely along the guide rail. This sliding connection design allows the position of the bulging sleeve 1206 to be adjusted as needed. The first lifting seat 1204 is installed on the first guide rail... The slide block 1203 supports the right-angle support arm 1205 and the expansion sleeve 1206. By adjusting the height of the first lifting seat 1204, the relative position between the expansion sleeve 1206 and the vacuum cylinder 901 can be controlled. The lower end of the right-angle support arm 1205 is fixedly connected to the first lifting seat 1204, and the upper end is fixedly installed with the expansion sleeve 1206. The design of the right-angle support arm 1205 enables the expansion sleeve 1206 to be stably maintained at the required position and angle. The expansion sleeve 1206 is vertically arranged and located directly above the vacuum cylinder 901. The expansion sleeve 1206 is a key component in the expansion process, and its shape and material selection have a direct impact on the expansion effect.

[0084] In use, place the capsule skin to be expanded inside the vacuum cylinder 901 and ensure its correct position. Then, adjust the height of the first lifting seat 1204 to maintain an appropriate distance between the expansion sleeve 1206 and the capsule skin. Start the negative pressure vacuum pump 21 to create a negative pressure environment inside the vacuum cylinder 901. Under the action of negative pressure, the capsule skin will be adsorbed onto the inner wall of the vacuum cylinder 901. Next, drive the right-angle support arm 1205 downward through the first servo electric cylinder 1207, thereby driving the expansion sleeve 1206 to move downward synchronously and insert into the inner cavity of the capsule skin, contacting the capsule skin and applying pressure. This pressure will cause the capsule skin to deform, thereby achieving the purpose of expansion.

[0085] Please refer to the following: Figure 1 , Figure 9 As an embodiment of the present invention, a first servo electric cylinder 1207 is provided below the first lifting seat 1204, wherein the first servo electric cylinder 1207 is vertically arranged; the lower end of the cylinder body of the first servo electric cylinder 1207 passes through the table panel 6 and is fixedly connected to the frame base 1, wherein the top end of the piston rod of the first servo electric cylinder 1207 is fixedly connected to the lower end of the first lifting seat 1204; an air inlet 22 is opened at the upper end of the expansion sleeve 1206, wherein an air pump 23 is installed on the frame base 1; the air pump 23 is connected to the air inlet 22 through a pipeline.

[0086] In the above-described scheme, the first servo electric cylinder 1207 is vertically positioned below the first lifting seat 1204. The lower end of its cylinder body penetrates the platform panel 6 and is firmly fixedly connected to the frame base 1. The top end of the piston rod is fixedly connected to the lower end of the first lifting seat 1204. This design enables the first lifting seat 1204 to achieve precise lifting movements under the drive of the first servo electric cylinder 1207, thereby controlling the relative position between the expanding rubber sleeve 1206 and the bladder skin. The expanding rubber sleeve 1206, as a key component in the expanding process, has an inflation port 22 at its upper end, which is used to connect to the inflation port. An air pump 23 is used to inflate the expanding sleeve 1206 during the expansion process. The air pump 23 is mounted on the frame base 1 and connected to the air inlet 22 of the expanding sleeve 1206 through a pipeline. The function of the air pump 23 is to provide the required gas pressure to the expanding sleeve 1206 during the expansion process, so that it can expand evenly and apply pressure to the bladder skin. Throughout the expansion process, it is necessary to closely monitor the contact between the expanding sleeve 1206 and the bladder skin, as well as the output pressure of the air pump 23 and the lifting position of the first servo electric cylinder 1207, to ensure the uniformity and consistency of the expansion effect.

[0087] Please see Figure 8As an embodiment of the present invention, the support ring feeding assembly 13 includes a second support frame 1301, wherein the lower end of the second support frame 1301 is fixedly connected to the table panel 6; a second linear guide rail 1302 is provided at the front end of the second support frame 1301, wherein a second guide rail slider 1303 is slidably connected to the second linear guide rail 1302; a second lifting seat 1304 is provided on the second guide rail slider 1303, wherein a suspension support seat 1305 is provided at the upper end of the second lifting seat 1304; the lower end of the suspension support seat 1305 is fixedly connected to the second lifting seat 1304, wherein the suspension support seat 1305 is fixedly connected to the second lifting seat 1304. A servo motor 1306 is provided on the upper end of the suspension support 1305; the body of the servo motor 1306 is fixedly connected to the suspension support 1305, wherein the output shaft of the servo motor 1306 passes through the top of the suspension support 1305 and extends upward; a rotating arm 1307 is provided above the suspension support 1305, wherein the lower middle of the rotating arm 1307 is fixedly connected to the output shaft of the servo motor 1306 through a flange; two sets of three-finger grippers 1308 with the same structure are respectively installed at both ends of the rotating arm 1307, wherein the three-finger grippers 1308 are positioned above the vacuum cylinder 901.

[0088] In the above-described scheme, the second support frame 1301 serves as the support structure for the support ring feeding assembly 13, with its lower end fixedly connected to the platform 6 to ensure the stability and reliability of the entire support ring feeding assembly 13; the second linear guide rail 1302 is installed at the front end of the second support frame 1301 to guide the linear movement of the second guide rail slider 1303; this design allows the suspension support seat 1305 and the rotating arm 1307 to move vertically to adapt to feeding requirements at different heights; the second guide rail slider 1303... 303 is slidably connected to the second linear guide rail 1302, and can move freely along the second linear guide rail 1302; by controlling the movement of the second guide rail slider 1303, the height position of the rotating arm 1307 and the three-finger gripper 1308 can be adjusted; the second lifting seat 1304 is set on the second guide rail slider 1303 and is used to support components such as the suspension support seat 1305 and the servo motor 1306; by adjusting the height of the second lifting seat 1304, the vertical position of the rotating arm 1307 and the three-finger gripper 1308 can be controlled. Position; the lower end of the suspension support 1305 is fixedly connected to the second lifting seat 1304, and the upper end is equipped with a servo motor 1306. The suspension support 1305 provides a stable support platform for the servo motor 1306 and the rotating arm 1307; the body of the servo motor 1306 is fixedly connected to the suspension support 1305, and the output shaft of the servo motor 1306 passes through the top of the suspension support 1305 and extends upward. The servo motor 1306 is used to drive the rotational movement of the rotating arm 1307 to achieve precise placement of the support ring; The lower end of the rotating arm 1307 is fixedly connected to the output shaft of the servo motor 1306 via a flange. The design of the rotating arm 1307 allows the three-finger gripper 1308 to rotate in the horizontal plane to adapt to different angles of material feeding. The three-finger gripper 1308 is installed at both ends of the rotating arm 1307, and each set of three-finger grippers 1308 has the same structure. The three-finger gripper 1308 is used to hold the support ring. By precisely controlling the opening, closing and rotation of the gripper, the support ring can be accurately placed into the designated position inside the vacuum cylinder 901.

[0089] Please refer to the following: Figure 1 , Figure 8 As an embodiment of the present invention, a second servo electric cylinder 1309 is provided below the second lifting seat 1304, wherein the second servo electric cylinder 1309 is vertically arranged; the lower end of the cylinder body of the second servo electric cylinder 1309 passes through the table panel 6 and is fixedly connected to the frame base 1, wherein the top end of the piston rod of the second servo electric cylinder 1309 is fixedly connected to the lower end of the second lifting seat 1304.

[0090] In the above-described scheme, the second servo electric cylinder 1309 is vertically positioned below the second lifting seat 1304. The lower end of the cylinder body of the second servo electric cylinder 1309 penetrates the platform panel 6 and is firmly fixedly connected to the frame base 1. The top end of the piston rod of the second servo electric cylinder 1309 is fixedly connected to the lower end of the second lifting seat 1304. This design enables the second lifting seat 1304 to achieve precise lifting movements under the drive of the second servo electric cylinder 1309, thereby controlling the vertical position of the rotating arm 1307 and the three-finger gripper 1308. The second lifting seat 1304 serves as the support platform for the suspension support seat 1305, the servo motor 1306, and the rotating arm 1307. Its height can be precisely adjusted by the piston rod of the second servo electric cylinder 1309. This design allows the entire support ring loading assembly 13 to flexibly adapt to loading requirements at different heights. The suspension support seat 1305... The servo motor 1306 is fixedly connected to the second lifting seat 1304. The design of the suspension support seat 1305 enables the servo motor 1306 to operate stably and transmit power to the rotating arm 1307. The servo motor 1306 is mounted on the suspension support seat 1305, and its output shaft passes through the top of the suspension support seat 1305 and extends upward. It is fixedly connected to the lower end of the rotating arm 1307 through a flange. The servo motor 1306 is used to drive the rotation of the rotating arm 1307. The design of the rotating arm 1307 enables the three-finger gripper 1308 to grip and place the support ring at different angles. The three-finger gripper 1308 is mounted at both ends of the rotating arm 1307 for gripping the support ring. The design of the three-finger gripper 1308 ensures the stability and accuracy of the gripping, thereby ensuring that the support ring can be accurately placed in the designated position inside the vacuum cylinder 901.

[0091] Please see Figure 10 In one embodiment of the present invention, the ring feeding assembly 14 includes a fixed support 1401, wherein a worm gear screw jack 1402 is provided above the fixed support 1401; a drive motor 1403 is arranged side by side on one side of the worm gear screw jack 1402, wherein the output shaft of the drive motor 1403 is fixedly connected to the input end of the worm 1404 of the worm gear screw jack 1402 through a coupling; the upper end of the lifting screw 1405 of the worm gear screw jack 1402 is fixed. A base plate 1406 is connected, and a support ring clamp 1407 is provided above the base plate 1406. The support ring clamp 1407 and the base plate 1406 are fixedly connected by a support column 1408. Limiting guide shafts 1409 are symmetrically installed on both sides of the lower end of the base plate 1406. A linear bearing 1410 adapted to the limiting guide shaft 1409 is provided on the fixed support 1401, and the limiting guide shaft 1409 passes through the linear bearing 1410 and is slidably connected to it.

[0092] In the above-described scheme, the fixed support 1401 serves as a stable foundation for the ring-feeding assembly 14, providing necessary support and positioning functions. The design of the fixed support 1401 ensures the stable installation and operation of the worm gear screw jack 1402 and other components. The worm gear screw jack 1402 is a precision lifting mechanism that achieves smooth lifting motion through the coordinated operation of the worm gear and screw. The worm gear screw jack 1402 plays a crucial role in the ring-feeding assembly 14, responsible for driving the base plate 1406 and the support ring clamp 1407 above it to perform precise lifting operations. The drive motor 1403 serves as the power source. The drive motor 1403 is fixedly connected to the input end of the worm 1404 of the worm gear screw jack 1402 via a coupling. When the drive motor 1403 starts, it transmits torque to the worm 1404 through the coupling, thereby driving the worm gear screw jack 1402 to work. The worm 1404, as the input component of the worm gear screw jack 1402, is connected to the output shaft of the drive motor 1403 and is responsible for converting the rotational motion of the drive motor 1403 into the rotational motion of the worm gear, thereby driving the screw to lift and lower. The lifting screw 1405 is the output component of the worm gear screw jack 1402, and achieves the lifting function through rotational motion. The upper end of 1405 is fixedly connected to the base plate 1406. When the lifting screw 1405 rises or falls, it will drive the base plate 1406 and the support ring clamp 1407 above it to rise or fall together. The base plate 1406 serves as the bearing platform for the support ring clamp 1407. The base plate 1406 is fixedly connected to the support ring clamp 1407 through the support column 1408. The design of the base plate 1406 ensures that the support ring clamp 1407 can be stably installed and operated. The support ring clamp 1407 is a device for clamping and fixing the support ring. The support ring clamp 1407 is fixedly connected to the base plate 1406 through the support column 1408 to ensure that the support ring can maintain a stable position during the lifting process. The support column 1408 serves as a component connecting the base plate 1406 and the support ring clamp 1407, providing the necessary structural strength and stability. The limiting guide shaft 1409 is installed on both sides of the lower end of the base plate 1406 to limit the lifting range of the base plate 1406 and ensure the stability and accuracy of the base plate 1406 during the lifting process. The linear bearing 1410 is provided on the fixed support 1401 and is adapted to the limiting guide shaft 1409. The design of the linear bearing 1410 allows the limiting guide shaft 1409 to slide smoothly, thereby ensuring the stability and accuracy of the base plate 1406 and the support ring clamp 1407 above it during the lifting process.

[0093] A vacuum push ring method for assembling a rear air spring includes the following steps:

[0094] Step S10, Device Startup and Initialization:

[0095] Turn on the power switch of electrical cabinet 4, ensure all circuit connections are normal, start the industrial control all-in-one computer 5, enter the equipment control interface, open the equipment control software on the industrial control all-in-one computer 5, log in to the equipment control interface, and check whether the settings of various parameters are correct, including but not limited to motor speed, cylinder pressure, sensor sensitivity, etc., and make necessary adjustments to the parameters according to process requirements; check whether all sensors (such as position sensors, pressure sensors, etc.) are in standby mode; check whether the cylinder is in the initial position, observe whether the cylinder movement is smooth, without jamming or air leakage, check whether the motor is in standby mode, observe whether the motor rotation is flexible and without abnormal noise;

[0096] Arrange the rear air spring bladders to be assembled neatly on the designated rack, ensuring sufficient quantity; check the specifications and quality of the support rings to ensure they match the bladders, and place them in the storage box for easy access later.

[0097] Step S20, Skin Positioning and Fixation:

[0098] Step S201: The track-embedded screw slide 7 is started by the control system. The track-embedded screw slide 7 is a precision linear motion device that uses the rotational motion of the screw to convert the linear motion of the slide. After receiving the start signal, the screw slide starts to work, driving the vacuum adsorption assembly 9 on it to move forward along the preset track. When the vacuum adsorption assembly 9 moves to the predetermined operating area, the track-embedded screw slide 7 stops working, keeping the vacuum adsorption assembly 9 stable in this position.

[0099] Step S202: In the operating area, the operator picks up the prepared capsule and ensures that its surface is clean and undamaged; aligns the capsule with the feed hole 1505 at the top of the vacuum cylinder 901, and then gently places it into the inner cavity of the forming adsorption cylinder 902. This process requires ensuring that the capsule is in the correct position for subsequent operations.

[0100] As the capsule skin is inserted, its lower end will automatically insert into the gap between the inner wall of the molding adsorption cylinder 902 and the outer wall of the expansion valve 1701. The expansion valve 1701 is an expandable component used to squeeze the capsule skin in subsequent steps so that it fits tightly against the inner wall of the molding adsorption cylinder 902.

[0101] Step S203: Next, the second telescopic cylinder 1603 on the second sealing assembly 16 is activated by the control system. The second telescopic cylinder 1603 starts working after receiving the start signal and pushes the second lifting plate 1604 to move downward.

[0102] The second lifting plate 1604 is a component with a conical brake platform 1605 installed in the middle, which is used to subsequently compress the expansion valve 1701; as the second lifting plate 1604 moves downward, the conical brake platform 1605 also moves downward along the conical through hole 1704. When the outer wall of the conical brake platform 1605 contacts the inner wall of the expansion valve 1701, it will begin to compress the expansion valve 1701, causing it to expand outward.

[0103] After being squeezed by the conical braking platform 1605, the outer wall of the expansion valve 1701 will squeeze the bladder skin, making it tightly adhere to the inner wall of the molding adsorption cylinder 902. This process will continue for a period of time until the lower end of the bladder skin is completely sealed inside the molding adsorption cylinder 902.

[0104] When the capsule skin is tightly squeezed between the inner wall of the molded adsorption cylinder 902 and the outer wall of the expansion valve 1701, the second sealing assembly 16 completes its work; at this time, the lower end of the capsule skin has been successfully sealed inside the molded adsorption cylinder 902, preparing for subsequent operations.

[0105] Step S30, swelling of the sac skin:

[0106] Step S301: First, the track-embedded screw slide 7 is activated by the control system. Driven by the track-embedded screw slide 7, the vacuum adsorption assembly 9 moves along the preset track to the underside of the expansion sleeve 1206. During this process, the expansion flap 1701 maintains stable compression on the bladder to ensure that the bladder will not fall off or become misaligned during the movement.

[0107] When the vacuum adsorption assembly 9 moves below the expansion sleeve 1206, the expansion sleeve 1206 is precisely aligned with the feed hole 1505 at the top of the vacuum cylinder 901 through fine adjustment or preset precise position control. This is a key step in subsequent operations to ensure that the expansion sleeve 1206 can be smoothly inserted into the bladder.

[0108] Step S302: Next, the first servo electric cylinder 1207 is started through the control system. The servo electric cylinder is a high-precision linear motion drive device with the ability to precisely control position, speed and acceleration.

[0109] After the first servo electric cylinder 1207 is working, the extension and retraction of its piston rod drives the right-angle support arm 1205 to move downward along the first linear guide rail 1202. The right-angle support arm 1205 is a stable support structure used to fix and support the expansion sleeve 1206.

[0110] As the right-angle support arm 1205 moves downward, the expansion sleeve 1206 is also moved downward synchronously. During this process, the expansion sleeve 1206 maintains a tight connection with the right-angle support arm 1205 to ensure that it can be inserted into the bladder skin smoothly and accurately.

[0111] When the expansion sleeve 1206 descends to a certain position, its lower end will pass through the feed hole 1505 at the top of the vacuum cylinder 901 and be smoothly inserted into the inside of the bladder. This step requires ensuring that the position and angle of the expansion sleeve 1206 are correct in order to avoid damage to the bladder.

[0112] S303. After the expansion sleeve 1206 is successfully inserted into the bladder, the inflation pump 23 is started through the control system. The inflation pump 23 is a device that can provide a stable airflow pressure to inflate the expansion sleeve 1206. After the inflation pump 23 is started, the gas it generates is filled into the expansion sleeve 1206 through the inflation port 22. As the gas is continuously filled, the expansion sleeve 1206 gradually expands.

[0113] As the expansion sleeve 1206 expands, it gradually pushes the capsule skin outward. During this process, the outer wall of the expansion sleeve 1206 comes into close contact with the inner wall of the forming adsorption cylinder 902, and evenly squeezes the capsule skin between the two. Under the continuous pushing of the expansion sleeve 1206, the capsule skin is finally completely adhered to the inner wall of the forming adsorption cylinder 902. This process requires ensuring that the expansion degree and pressure of the expansion sleeve 1206 are moderate to avoid excessive compression or damage to the capsule skin.

[0114] Step S40, Vacuum adsorption positioning:

[0115] Step S401: After the capsule skin is completely attached to the inner wall of the forming adsorption cylinder 902, immediately start the negative pressure system of the vacuum cylinder 901; the negative pressure system is connected to the negative pressure vacuum pump 21 through the gas connection pipe 20 to ensure that the pressure in the negative pressure adsorption chamber 903 is quickly reduced to the preset value. This preset value is usually determined according to the material, thickness and forming requirements of the capsule skin.

[0116] Turn on the gas connection pipe 20 to connect the negative pressure adsorption chamber 903 to the inner cavity of the molding adsorption cylinder 902 through the air hole 904. In this way, the low air pressure in the negative pressure adsorption chamber 903 will generate a stable adsorption force, which will firmly adsorb the capsule skin onto the inner wall of the molding adsorption cylinder 902. This step is the key to ensure that the capsule skin will not fall off or move during subsequent processing.

[0117] Step S402: Next, activate the first telescopic cylinder 1503 on the first sealing assembly 15. The first telescopic cylinder 1503 is a precision drive device that can accurately control the up and down movement of the sealing pressure ring 1506.

[0118] By driving the first telescopic cylinder 1503, the first lifting plate 1504 is moved downward. The first lifting plate 1504 is a stable support structure used to fix and support the sealing ring 1506. As the first lifting plate 1504 descends, the sealing ring 1506 is also moved downward synchronously and inserted into the inner cavity of the capsule. The outer wall of the sealing ring 1506 fits tightly with the upper inner wall of the molding adsorption cylinder 902, thereby completing the sealing of the upper end of the capsule. This step ensures that the negative pressure system can work continuously and stably and maintain the fixed position of the capsule on the inner wall of the molding adsorption cylinder 902.

[0119] After sealing the upper end of the bladder, turn off the air pump 23 and start the corresponding venting device (such as the venting valve) to expel the gas inside the expansion sleeve 1206. As the gas is expelled, the expansion sleeve 1206 gradually contracts and separates from the bladder. This step is crucial for recovering the expansion sleeve 1206 and preparing for the next operation.

[0120] S403. After the expansion sleeve 1206 is completely separated from the bladder, the first servo cylinder is activated. The first servo cylinder drives the right-angle support arm 1205 to move upward along the first linear guide rail 1202 through the extension and retraction of its piston rod. As the right-angle support arm 1205 rises, the expansion sleeve 1206 is also moved upward synchronously and gradually moves out of the bladder. This step is the key to recovering the expansion sleeve 1206 and preparing it for cleaning, inspection or next use.

[0121] After the expansion sleeve 1206 is completely removed, the relevant drive device and control system are turned off; at this time, the capsule skin has been firmly adsorbed onto the inner wall of the forming adsorption cylinder 902 and is ready for subsequent processing or treatment.

[0122] Step S50: Support ring loading and positioning:

[0123] Step S501: First, carefully place the support ring to be processed onto the support ring fixture 1407. This support ring fixture 1407 is specially designed to fix the support ring to ensure its stability and accuracy in subsequent operations. Next, activate the clamping mechanism of the support ring fixture 1407. This mechanism is usually pneumatically or electrically driven and can quickly and firmly fix the support ring onto the fixture to prevent it from moving or falling off in subsequent operations.

[0124] Step S502: Then, start the drive motor 1403 of the ring feeding assembly 14. The drive motor 1403 is connected to the worm gear screw jack 1402 through a coupling, which can precisely control the operation of the worm gear screw jack 1402. Driven by the drive motor 1403, the worm gear screw jack 1402 starts to work. It uses the interaction between the worm gear and the screw to convert the rotational motion into linear motion, thereby driving the base plate 1406 and the support ring clamp 1407 installed above to rise.

[0125] As the elevator continues to work, the base plate 1406 and the support ring clamp 1407 gradually rise to the preset height. This height is determined according to the needs of subsequent operations and the layout of the equipment to ensure that the support ring can be accurately removed by the subsequent mechanism.

[0126] Step S503: Next, start the servo motor 1306. The servo motor 1306 is a high-precision drive device that can accurately control the rotation angle and speed of the rotating arm 1307. Driven by the servo motor 1306, the rotating arm 1307 starts to rotate and rotates the three-finger gripper 1308 at one end to the top of the support ring clamp 1407.

[0127] Then, the second servo electric cylinder 1309 is activated. The second servo electric cylinder 1309 drives the rotating arm 1307 to move downward along the second linear guide rail 1302 through the extension and retraction of its piston rod. As the rotating arm 1307 descends, the three-finger gripper 1308 gradually approaches the support ring clamp 1407.

[0128] When the chuck end of the three-finger gripper 1308 descends and inserts into the support ring clamp 1407, the gripper opens and clamps the support ring. This gripper is usually pneumatically or electrically driven and can open and close flexibly to accommodate support rings of different sizes and shapes.

[0129] Finally, the second servo electric cylinder 1309 is activated again, driving the rotating arm 1307 to move upward along the second linear guide rail 1302. As the rotating arm 1307 rises, the three-finger gripper 1308 also moves upward in sync, and removes the gripped support ring from the support ring fixture 1407. At this point, the support ring has been successfully removed and is ready to be transferred to the next processing station for subsequent operations.

[0130] Step S60, Support Ring Installation:

[0131] Step S601: First, start the track-embedded screw slide 7. Driven by the track-embedded screw slide 7, the vacuum cylinder 901 with the bladder skin adsorbed is smoothly moved out from under the expansion sleeve 1206. Then, the vacuum cylinder 901 is moved to the designated preset position. This position is determined according to the needs of subsequent operations and the layout of the equipment to ensure that the support ring can be accurately installed in the bladder skin.

[0132] Step S602: Then, start the servo motor 1306. Driven by the servo motor 1306, the rotating arm 1307 begins to rotate. As the rotating arm 1307 rotates, the three-finger gripper 1308 holding the support ring at one end also gradually rotates to the top of the vacuum cylinder 901. During this process, it is necessary to pay close attention to the feedback signal of the sensor. The sensor can monitor the position and status of the rotating arm 1307 and the three-finger gripper 1308 in real time to ensure that the support ring is accurately positioned relative to the feed hole 1505.

[0133] Step S603: Next, the second servo electric cylinder 1309 is started. The second servo electric cylinder 1309 drives the rotating arm 1307 to move downward along the second linear guide rail 1302 through the extension and retraction of its piston rod. As the rotating arm 1307 descends, the three-finger gripper 1308 holding the support ring gradually approaches the feed hole 1505 on the vacuum cylinder 901. When the gripper head descends and inserts into the feed hole 1505, it continues to move downward, accurately sending the support ring into the bladder.

[0134] After the support ring enters the bladder, the second servo electric cylinder 1309 continues to work, driving the rotating arm 1307 and the gripper to make slight adjustments up or down along the second linear guide rail 1302 to ensure that the support ring is moved to the preset specified height. During this process, the outer wall of the support ring is in close contact with the inner wall of the bladder to form a stable support structure.

[0135] Finally, after the support ring is accurately installed inside the bladder skin, the three-finger gripper 1308 remains inside the bladder skin for a period of time (depending on specific process requirements) to ensure the fit and stability between the support ring and the bladder skin; then, the three-finger gripper 1308 is driven to release the support ring and prepare for the next operation.

[0136] Step S70, Removal of finished product skin:

[0137] Step S701: Activate the first telescopic cylinder 1503 on the first sealing assembly 15. The first telescopic cylinder 1503 drives the piston rod of the first driving cylinder to move the first lifting plate 1504 upward. The first lifting plate 1504 further drives the sealing pressure ring 1506 upward, separating it from the inner cavity of the bladder. This step ensures the release of the inner cavity of the bladder, providing space for subsequent operations.

[0138] Simultaneously, the second telescopic cylinder 1603 on the second sealing assembly 16 is activated. The second telescopic cylinder 1603 drives the piston rod of the second driving cylinder to move the second lifting plate 1604 upward. The conical brake platform 1605 installed in the middle of the second lifting plate 1604 moves upward accordingly and moves upward along the conical through hole 1704, releasing the pressure on the expansion valve 1701. After the pressure is released, the expansion valve 1701 resets and disengages from the tight sealing state on the lower end of the bladder. This step provides conditions for the release of the bladder and subsequent operations.

[0139] Step S702: Turn off the negative pressure source of the vacuum adsorption system, stop the air pumping operation in the negative pressure adsorption chamber 903, and slowly release the adsorption force in the negative pressure adsorption chamber 903. By controlling the decrease of negative pressure, sudden impact or deformation of the capsule skin can be avoided.

[0140] As the negative pressure gradually decreases, the capsule skin loses its adsorption force and gradually releases and clamps the support ring. This step ensures that the support ring is in a stable position inside the capsule skin, providing a guarantee for subsequent operations. Finally, the negative pressure adsorption system is released, and the capsule skin gradually returns to its original shape under its own elasticity. During this process, the elastic recovery of the capsule skin will not change the position of the support ring inside it.

[0141] Step S703: Drive the three-finger gripper 1308 to open and clamp the support ring with the bladder skin installed. This step requires ensuring that the clamping force of the gripper is moderate in order to avoid damage to the bladder skin or support ring.

[0142] The second servo electric cylinder 1309 is activated, and the extension and retraction of its piston rod drives the rotating arm 1307 to move upward along the second linear guide rail 1302; during the upward movement, the rotating arm 1307 drives the three-finger gripper 1308 and the finished capsule skin it holds to move out of the forming adsorption cylinder 902.

[0143] Finally, the removed capsule skin is placed in the finished product area for further processing or packaging. This step needs to be carried out according to the specific production process and technology requirements.

[0144] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A vacuum push-ring device for assembling rear air springs, characterized in that, The system includes a frame base (1), with an upper frame (2) above the frame base (1); the front end of the upper frame (2) is an operating area, and transparent protective doors (3) are installed at the left and right ends and the rear end of the upper frame (2); an electrical cabinet (4) is provided on the left side of the upper frame (2), and an industrial control all-in-one machine (5) is provided on the right side of the upper frame (2); the system is characterized in that a tabletop (6) is installed on the upper end of the frame base (1), and a track-embedded screw slide (7) is provided above the tabletop (6); the fixed seat of the track-embedded screw slide (7) is fixedly connected to the tabletop (6), and a support seat (8) is fixedly installed above the slide of the track-embedded screw slide (7); a "U"-shaped fixed seat is fixedly installed above the support seat (8). A frame (10) is provided, wherein a vacuum adsorption assembly (9) for the skin is provided above the "U"-shaped fixed frame (10), and the vacuum adsorption assembly (9) for the skin is fixedly connected to the upper end of the "U"-shaped fixed frame (10) through a support plate (11); a skin expansion assembly (12) for the skin is provided on the platform (6), wherein the skin expansion assembly (12) for the skin is arranged side by side with the vacuum adsorption assembly (9); a support ring feeding assembly (13) is provided on the side of the vacuum adsorption assembly (9) away from the skin expansion assembly (12), wherein a ring feeding assembly (14) is provided on the side of the support ring feeding assembly (13), and the ring feeding assembly (14) is arranged below the support ring feeding assembly (13); the vacuum adsorption assembly (9) for the skin includes a vacuum cylinder (901), wherein the vacuum cylinder (901) A molding adsorption cylinder (902) is fitted inside the cavity; the outer diameter of the molding adsorption cylinder (902) is smaller than the inner diameter of the vacuum cylinder (901), wherein a negative pressure adsorption chamber (903) is formed between the vacuum cylinder (901) and the molding adsorption cylinder (902); a plurality of air holes (904) are opened on the cavity wall of the molding adsorption cylinder (902), wherein the negative pressure adsorption chamber (903) is connected to the inner cavity of the molding adsorption cylinder (902) through the air holes (904); a first sealing ring (905) is provided at the upper end of the molding adsorption cylinder (902), wherein the first sealing ring (905) is used to seal the upper end of the negative pressure adsorption chamber (903); the inner wall of the first sealing ring (905) is fixedly connected to the upper end of the molding adsorption cylinder (902), wherein the first sealing ring... The outer wall of the ring (905) is fixedly connected to the upper end of the vacuum cylinder (901); the lower end of the molded adsorption cylinder (902) is provided with a second sealing ring (906), wherein the second sealing ring (906) is used to seal the lower end of the negative pressure adsorption chamber (903); the inner wall of the second sealing ring (906) is fixedly connected to the lower end of the molded adsorption cylinder (902), wherein the outer wall of the second sealing ring (906) is fixedly connected to the lower end of the vacuum cylinder (901); a first sealing assembly (15) is provided above the vacuum cylinder (901), wherein a second sealing assembly (16) is provided below the vacuum cylinder (901); a sealing expansion mold assembly (17) is provided inside the second sealing ring (906), wherein the sealing expansion mold assembly (17) is movably connected to the second sealing ring (906);The sealing expansion mold assembly (17) includes a plurality of expansion petals (1701), wherein the plurality of expansion petals (1701) are evenly distributed along the inner wall of the second sealing ring (906), and an movable gap is provided between two adjacent expansion petals (1701); a positioning rod (1702) is provided on the side of the expansion petal (1701) near the second sealing ring (906), wherein the other end of the positioning rod (1702) passes through the second sealing ring (906) and extends into it; a return spring (1703) is provided inside the second sealing ring (906) at a position corresponding to the positioning rod (1702), wherein one end of the return spring (1703) is fixedly connected to the second sealing ring (906), and the other end of the return spring (1703) is fixedly connected to the positioning rod (1702); an inclined surface is provided on the side of the expansion petal (1701) away from the second sealing ring (906), wherein the plurality of expansion petals (1701) enclose a conical through hole (1704).

2. The vacuum push ring device for assembling a rear air spring according to claim 1, characterized in that, The first sealing assembly (15) includes a first fixing plate (1501), wherein the first fixing plate (1501) has a first mounting hole (1502) in the middle that is adapted to the outer diameter of the upper end of the vacuum cylinder (901), and the first mounting hole (1502) is fixedly connected to the vacuum cylinder (901); the first fixing plate (1501) has symmetrically arranged first telescopic cylinders (1503) at both ends below, wherein the cylinder body of the first telescopic cylinder (1503) is fixedly connected to the first fixing plate (1501); the piston rod of the first telescopic cylinder (1503) passes through the first fixing plate (1501) upward, wherein the top end of the piston rod of the first telescopic cylinder (1503) is fixedly connected to a first lifting plate (1504); the first lifting plate (1504) has a feed hole (1505) in the middle corresponding to the upper end of the vacuum cylinder (901), wherein a sealing pressure ring (1506) is provided around the lower end of the feed hole (1505).

3. A vacuum push-ring device for assembling a rear air spring according to claim 2, characterized in that, The upper end of the sealing ring (1506) is fixedly connected to the feed hole (1505), and the lower end of the sealing ring (1506) extends downward into the inner cavity of the forming adsorption cylinder (902); the outer wall of the sealing ring (1506) is provided with a first inclined surface (18) along its circumference, and the inner wall of the upper end of the forming adsorption cylinder (902) is provided with a second inclined surface (19) corresponding to the first inclined surface (18) along its circumference, and a gap is provided between the first inclined surface (18) and the second inclined surface (19).

4. A vacuum push-ring device for assembling a rear air spring according to claim 3, characterized in that, The second sealing assembly (16) includes a second fixing plate (1601), wherein the second fixing plate (1601) has a second mounting hole (1602) in the middle that matches the outer diameter of the lower end of the vacuum cylinder (901), and the second mounting hole (1602) is fixedly connected to the outer wall of the vacuum cylinder (901); second telescopic cylinders (1603) are symmetrically arranged above both ends of the second fixing plate (1601), wherein the cylinder body of the second telescopic cylinder (1603) is fixedly connected to the second fixing plate (1601); the piston of the second telescopic cylinder (1603) is... The piston rod extends downward through the second fixed plate (1601), wherein the piston rod of the second telescopic cylinder (1603) is fixedly connected to the top of the second lifting plate (1604); the second lifting plate (1604) is provided with a conical brake platform (1605) in the middle, wherein the upper end of the conical brake platform (1605) extends upward into the conical through hole (1704); the outer wall of the conical brake platform (1605) abuts against the inclined surface opened on the inner wall of the expansion valve (1701), wherein the conical brake platform (1605) is used to drive the expansion valve (1701) to expand or close.

5. A vacuum push-ring device for assembling a rear air spring according to claim 4, characterized in that, The vacuum cylinder (901) is equipped with a gas path connecting pipe (20), which is connected to the negative pressure adsorption chamber (903); the frame base (1) is equipped with a negative pressure vacuum pump (21), whose air inlet end is connected to the gas path connecting pipe (20) through a pipeline.

6. A vacuum push-ring device for assembling a rear air spring according to claim 5, characterized in that, The cystic expansion assembly (12) includes a first support frame (1201), wherein the lower end of the first support frame (1201) is fixedly connected to the table panel (6); a first linear guide rail (1202) is provided at the front end of the first support frame (1201), wherein a first guide rail slider (1203) is slidably connected on the first linear guide rail (1202); a first lifting seat (1204) is provided on the first guide rail slider (1203), wherein a right-angle support arm (1205) is fixedly installed on the upper end of the first lifting seat (1204). The lower end of the right-angle support arm (1205) is fixedly connected to the first lifting seat (1204), and the upper end of the right-angle support arm (1205) is fixedly installed with an expansion sleeve (1206); the expansion sleeve (1206) is vertically arranged, and the expansion sleeve (1206) is located directly above the vacuum cylinder (901); an air inlet (22) is opened at the upper end of the expansion sleeve (1206), and an air pump (23) is installed on the frame base (1), and the air pump (23) is connected to the air inlet (22) through a pipeline.

7. A vacuum push-ring device for assembling a rear air spring according to claim 6, characterized in that, The support ring feeding assembly (13) includes a second support frame (1301), wherein the lower end of the second support frame (1301) is fixedly connected to the table panel (6); a second linear guide rail (1302) is provided at the front end of the second support frame (1301), wherein a second guide rail slider (1303) is slidably connected on the second linear guide rail (1302); a second lifting seat (1304) is provided on the second guide rail slider (1303), wherein a suspension support seat (1305) is provided at the upper end of the second lifting seat (1304); the lower end of the suspension support seat (1305) is fixedly connected to the second lifting seat (1304), wherein the suspension support seat (1305) is fixedly connected to the second lifting seat (1304). A servo motor (1306) is provided at the upper end of the 305; the body of the servo motor (1306) is fixedly connected to the suspension support (1305), wherein the output shaft of the servo motor (1306) passes through the top of the suspension support (1305) and extends upward; a rotating arm (1307) is provided above the suspension support (1305), wherein the lower middle of the rotating arm (1307) is fixedly connected to the output shaft of the servo motor (1306) through a flange; two sets of three-finger grippers (1308) with the same structure are respectively installed at both ends of the rotating arm (1307), wherein the three-finger grippers (1308) are set above the vacuum cylinder (901).

8. A vacuum push-ring device for assembling a rear air spring according to claim 7, characterized in that, The ring feeding assembly (14) includes a fixed support (1401), wherein a worm gear screw jack (1402) is provided above the fixed support (1401); a drive motor (1403) is arranged side by side on one side of the worm gear screw jack (1402), wherein the output shaft of the drive motor (1403) is fixedly connected to the input end of the worm (1404) of the worm gear screw jack (1402) through a coupling; a base plate (1406) is fixedly connected to the upper end of the lifting screw (1405) of the worm gear screw jack (1402), wherein a support ring clamp (1407) is provided above the base plate (1406), and the support ring clamp (1407) and the base plate (1406) are fixedly connected through a support column (1408).

9. A vacuum push-ring method for assembling a rear air spring using a vacuum push-ring device for assembling a rear air spring as described in claim 8, characterized in that, Includes the following steps: Step S10, Device Startup and Initialization: Turn on the power switch of the electrical cabinet (4), ensure that all circuits are connected normally, start the industrial control computer (5), enter the equipment control interface, check whether the parameter settings are correct; confirm that all sensors, cylinders and motors are in standby mode and there are no abnormal alarms. Place the rear air spring bladders to be assembled neatly on the designated rack, ensuring sufficient quantity; check the specifications and quality of the support rings to ensure they match the bladders, and place them in the storage box. Step S20, Skin Positioning and Fixation: The drive track embedded screw slide (7) drives the vacuum adsorption assembly (9) to move forward to the operating area. The prepared capsule is put into the inner cavity of the forming adsorption cylinder (902) through the feed hole (1505) at the top of the vacuum cylinder (901), so that the lower end of the capsule is inserted between the inner wall of the forming adsorption cylinder (902) and the outer wall of the expansion valve (1701). The second telescopic cylinder (1603) on the second sealing assembly (16) is activated, and the second lifting plate (1604) is driven to move downward by the second driving cylinder. The conical brake platform (1605) installed in the middle of the second lifting plate (1604) moves downward along the conical through hole (1704). The outer wall of the conical brake platform (1605) abuts against the inner wall of the expansion valve (1701) and drives the expansion valve (1701) to expand. This causes the outer wall of the expansion valve (1701) to squeeze the bladder skin, so that it is tightly attached to the inner wall of the forming adsorption cylinder (902), thus completing the sealing of the lower end of the bladder skin. Step S30, swelling of the sac skin: The drive track embedded screw slide (7) drives the vacuum adsorption assembly (9) to move to the bottom of the expansion sleeve (1206), so that the expansion sleeve (1206) is precisely aligned with the feed hole (1505) at the top of the vacuum cylinder (901); Start the first servo electric cylinder (1207), and drive the right-angle support arm (1205) to move downward along the first linear guide rail (1202) through the first servo electric cylinder (1207), so that the right-angle support arm (1205) drives the expansion sleeve (1206) to move downward synchronously, and insert it into the bladder through the feed hole (1505); Start the air pump (23) and inflate the expansion sleeve (1206) through the air inlet (22). As the gas is inflated, the expansion sleeve (1206) gradually expands and pushes the skin outward to fit against the inner wall of the molding adsorption cylinder (902). Step S40, Vacuum adsorption positioning: After the capsule skin is attached to the inner wall of the forming adsorption cylinder (902) in step S30, the negative pressure system of the vacuum cylinder (901) is started and connected to the negative pressure vacuum pump (21) through the gas connection pipe (20) to ensure that the pressure in the negative pressure adsorption chamber (903) reaches the preset value. When the gas connection tube (20) is turned on, the negative pressure adsorption chamber (903) is connected to the inner cavity of the molded adsorption cylinder (902) through the air hole (904), forming a stable adsorption force, which firmly adsorbs the capsule skin onto the inner wall of the molded adsorption cylinder (902). The first telescopic cylinder (1503) on the first sealing assembly (15) is activated, and the first lifting plate (1504) is driven to move downward by the first driving cylinder, so that the first lifting plate (1504) drives the sealing pressure ring (1506) to move downward and insert into the inner cavity of the bladder skin; the outer wall of the sealing pressure ring (1506) cooperates with the inner wall of the upper end of the molding adsorption cylinder (902) to complete the sealing of the upper end of the bladder skin; Turn off the air pump (23) and discharge the gas inside the expansion sleeve (1206) to separate the bladder skin of the expansion sleeve (1206); start the first servo electric cylinder, and drive the right-angle support arm (1205) to move upward along the first linear guide rail (1202) through the first servo electric cylinder (1207), so that the right-angle support arm (1205) drives the expansion sleeve (1206) to rise synchronously and move out of the bladder skin; Step S50: Support ring loading and positioning: Place the support ring in the support ring clamp (1407) and clamp it in place. Start the drive motor (1403) of the ring feeding assembly (14) and drive the worm gear screw jack (1402) through the coupling to make the base plate (1406) and the support ring clamp (1407) installed above lift the support ring to the preset height. Start the servo motor (1306), which drives the rotating arm (1307) to rotate, so that the three-finger gripper (1308) at one end of the rotating arm (1307) rotates to above the support ring clamp (1407); Start the second servo electric cylinder (1309), which drives the rotating arm (1307) to move downward along the second linear guide rail (1302). This causes the rotating arm (1307) to move the three-finger gripper (1308) downward in sync. When the gripper end of the three-finger gripper (1308) descends and inserts into the support ring clamp (1407), the three-finger gripper (1308) opens to clamp the support ring. Start the second servo electric cylinder again, which drives the rotating arm (1307) to move upward along the second linear guide rail (1302). This causes the rotating arm (1307) to move the three-finger gripper (1308) upward in sync, thus completing the removal of the support ring. Step S60, Support Ring Installation: The drive track embedded screw slide (7) drives the vacuum cylinder (901) with the adsorbed capsule skin to move out from under the expansion sleeve (1206) and move to the designated preset position; Start the servo motor (1306), which drives the rotating arm (1307) to rotate, so that the three-finger gripper (1308) holding the support ring at one end of the rotating arm (1307) rotates to above the vacuum cylinder (901); during this process, it is necessary to pay close attention to the feedback signal of the sensor to ensure that the support ring and the feed hole (1505) are accurately positioned. The second servo electric cylinder (1309) is activated, which drives the rotating arm (1307) to move downward along the second linear guide rail (1302). The rotating arm (1307) drives the three-finger gripper (1308) holding the support ring to insert downward into the bladder through the feed hole (1505), and precisely moves the support ring to the preset height so that the outer wall of the support ring abuts against the inner wall of the bladder. At the same time, the three-finger gripper (1308) remains inside the bladder. Step S70, Removal of finished product skin: The first telescopic cylinder (1503) on the first sealing assembly (15) is activated, driving the first lifting plate (1504) upward by driving the first driving cylinder, causing the first lifting plate (1504) to drive the sealing pressure ring (1506) upward and separate it from the inner cavity of the bladder; at the same time, The second telescopic cylinder (1603) on the second sealing assembly (16) is activated, and the second lifting plate (1604) is moved upward by driving the second driving cylinder. This causes the conical brake platform (1605) installed in the middle of the second lifting plate (1604) to move upward along the conical through hole (1704) to release the pressure on the expansion valve (1701), so that the expansion valve (1701) is reset and disengaged from the pressure seal on the lower end of the bladder skin. Turn off the negative pressure source of the vacuum adsorption system, slowly release the adsorption force in the negative pressure adsorption chamber (903), and slowly complete the release and clamping of the bladder skin on the support ring through the controllable decrease of negative pressure. Finally, release and restore the shape of the bladder skin. The elastic recovery process of the bladder skin will not change the position of the support ring inside it. The three-finger gripper (1308) is driven to open and clamp the support ring on which the capsule skin is installed. The second servo electric cylinder (1309) is activated, and the second servo electric cylinder (1309) drives the rotating arm (1307) to move upward along the second linear guide rail (1302). The rotating arm (1307) drives the three-finger gripper (1308) to remove the capsule skin from the molded adsorption cylinder (902) and place it in the finished product area for further processing or packaging, thus completing the assembly.

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