Vacuum adsorption equipment for assembling bag skin of rear air spring

Abstract

The utility model discloses vacuum adsorption equipment for assembling a bag skin of a rear air spring. The vacuum adsorption equipment comprises a negative pressure module, a first sealing assembly is arranged at the upper end of the negative pressure module, and a second sealing assembly is arranged at the lower end of the negative pressure module; the negative pressure module comprises a supporting sleeve, a forming adsorption barrel is arranged in an inner cavity of the supporting sleeve in a sleeved mode, and a negative pressure adsorption cavity is formed between the supporting sleeve and the forming adsorption barrel. A first positioning ring and a second positioning ring are respectively arranged at the upper and lower ends of the forming adsorption cylinder. Through the synergistic effect of the first sealing assembly and the second sealing assembly, rapid and accurate positioning and sealing of the upper end and the lower end of the bag skin can be achieved; the first sealing assembly is used for compressing and sealing the upper end of the bag skin by using a sealing compression ring; the second sealing assembly achieves tight attaching and sealing of the lower end of the airbag head through an inverted-cone-shaped boss by means of expansion of an expansion valve, the problem that an opening in the bottom of the airbag is difficult to position and seal is effectively solved through the design, and the assembling efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air spring assembly technical field, especially relates to a vacuum adsorption equipment for the bag skin assembly of rear air spring. BACKGROUND

[0002] Air spring as an advanced elastic element, its core principle lies in through the compressibility of compressed air in sealed container to realize elastic function. In recent years, air spring is increasingly widely used in the application in automobile suspension system, and its design scheme optimization and innovation have become the focus of industry attention. In numerous design schemes, in order to ensure the stable connection and accurate positioning between outer protection cylinder and air bag, a new design idea emerges as the times require: namely, the large-diameter steel ring is embedded as inner support ring in small-diameter air bag, and then is fixed with outer protection cylinder by buckling.

[0003] However, in actual operation, this design idea faces not small challenge. Since there is significant size difference between the outer diameter of support positioning ring and the inner diameter of air bag in free state, therefore, it is a technical problem to successfully assemble support positioning ring to the inside of air bag, and more tricky is the positioning and sealing problem of air bag bottom opening. Due to the particularity of air bag structure, its bottom opening is difficult to realize quick and accurate positioning and sealing through traditional method, which not only increases the difficulty of assembly, but also leads to the extension of assembly time, thereby seriously restricts the improvement of support positioning ring and air bag automatic assembly efficiency. SUMMARY

[0004] The utility model discloses a kind of vacuum adsorption equipment for the bag skin assembly of rear air spring, to solve the problem raised in above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of vacuum suction equipment for assembling the bladder skin of rear air spring, including negative pressure module;The first sealing assembly is equipped on the upper end of the negative pressure module, wherein the second sealing assembly is equipped on the lower end of the negative pressure module;The negative pressure module includes support sleeve, wherein the support sleeve inner cavity is equipped with shaped suction cylinder;Shaped suction cylinder is the horn-shaped structure of large diameter at upper end, small diameter at lower end, wherein the cavity wall of shaped suction cylinder is uniformly equipped with several air holes;The outer diameter of shaped suction cylinder is less than the inner diameter of support sleeve, wherein the negative pressure suction cavity is formed between support sleeve and shaped suction cylinder, and the negative pressure suction cavity is communicated with shaped cavity by air hole;The first positioning ring is equipped on the upper end of shaped suction cylinder, wherein the second positioning ring is equipped on the lower end of shaped suction cylinder;The first positioning ring is used to seal the upper end of negative pressure suction cavity, wherein the second positioning ring is used to seal the lower end of negative pressure suction cavity;The first sealing assembly includes first fixed plate, wherein the first fixed plate is fixedly connected with the upper end of the outer wall of support sleeve;The first telescopic cylinder is symmetrically equipped below the both ends of the first fixed plate, wherein the cylinder body of the first telescopic cylinder is fixedly connected with the first fixed plate;The piston rod of the first telescopic cylinder penetrates the first fixed plate upwards, wherein the top end of the piston rod of the first telescopic cylinder is fixedly connected with the first lifting plate;The feeding hole is opened in the corresponding position of the upper end of support sleeve in the middle of the first lifting plate, wherein the sealing pressure ring is equipped in the feeding hole;The second sealing assembly includes second fixed plate, wherein the second fixed plate is fixedly connected with the lower end of the outer wall of support sleeve;The second telescopic cylinder is symmetrically equipped above the both ends of the second fixed plate, wherein the cylinder body of the second telescopic cylinder is fixedly connected with the second fixed plate;The piston rod of the second telescopic cylinder penetrates the second fixed plate downwards and is fixedly connected with the second lifting plate, and the inverted conical boss is equipped at the middle position of the upper end of the second lifting plate;The sealing inflation module assembly is equipped in the second positioning ring, wherein the sealing inflation module assembly is movably connected with the second positioning ring;The sealing inflation module assembly includes several inflation petals, wherein the several inflation petals are evenly arranged along the inner wall of the second positioning ring;The several inflation petals are combined to form a conical through hole, wherein the inverted conical boss is arranged in the conical through hole;The outer wall of the inverted conical boss is respectively abutted with the inner wall of the inflation petal, wherein the inverted conical boss is used to drive the inflation petal to expand or fold.

[0007] Preferably, the inner wall of the first positioning ring is fixedly connected with the upper end of the shaped suction cylinder, and the outer wall of the first positioning ring is fixedly connected with the upper end of the support sleeve;The inner wall of the second positioning ring is fixedly connected with the lower end of the shaped suction cylinder, and the outer wall of the second positioning ring is fixedly connected with the lower end of the support sleeve.

[0008] Preferably, the inflation petal is provided with a limiting guide rod near one side of the second positioning ring, wherein the other end of the limiting guide rod penetrates the second positioning ring and extends into the interior thereof;The position corresponding to the limiting guide rod in the interior of the second positioning ring is provided with a return spring, wherein one end of the return spring is fixedly connected with the second positioning ring, and the other end of the return spring is fixedly connected with the limiting guide rod.

[0009] Preferably, a positioning reference groove is arranged between the inner wall of the second positioning ring and the outer wall of the petal, wherein the lower end of the capsule skin is arranged in the positioning reference groove.

[0010] Preferably, the sealing compression ring is arranged at the lower end of the feeding hole and fixedly connected with the first lifting plate, wherein the lower end of the sealing compression ring extends into the inner cavity of the shaped adsorption cylinder, and the inner diameter of the sealing compression ring is equivalent to that of the feeding hole.

[0011] Preferably, the outer wall of the sealing compression ring is obliquely provided with a first extrusion surface along the circumference thereof, wherein the inner wall of the upper end of the shaped adsorption cylinder is annularly provided with a second extrusion surface corresponding to the first extrusion surface along the circumference thereof, and a gap is arranged between the first extrusion surface and the second extrusion surface.

[0012] Preferably, the first guide sleeves are respectively arranged at the four corners of the first fixed plate, wherein the first guide rods are respectively arranged at the four corners of the first lifting plate, and the first guide rods are matched with the first guide sleeves; the second guide sleeves are respectively arranged at the four corners of the second fixed plate, wherein the second guide rods are respectively arranged at the four corners of the second lifting plate, and the second guide rods are matched with the second guide sleeves.

[0013] Preferably, the petal is 6-10, wherein the petals are evenly arranged along the inner wall of the second positioning ring, and a movable gap is arranged between two adjacent petals.

[0014] Preferably, the support sleeve is provided with a gas path connecting pipe, wherein one end of the gas path connecting pipe is in communication with the negative pressure adsorption cavity, and the other end of the gas path connecting pipe is in communication with an external gas exchange device through a pipeline.

[0015] Preferably, the diameter of the gas hole is equivalent to the spacing between two adjacent gas holes.

[0016] Preferably, a plurality of support reinforcing rings are arranged on the outer wall of the shaped adsorption cylinder along the axial direction thereof, wherein a plurality of airflow through holes are arranged on the support reinforcing rings; the inner ring of the support reinforcing ring is fixedly connected with the outer wall of the shaped adsorption cylinder, and the outer ring of the support reinforcing ring is fixedly connected with the inner wall of the support sleeve.

[0017] Compared with the prior art, the utility model discloses the beneficial effects: the utility model discloses the synergies of first sealing assembly and second sealing assembly, can realize the quick, accurate positioning and sealing of the upper and lower ends of the capsule skin, wherein, first sealing assembly utilizes the first telescopic cylinder drive first lifting plate and sealing compression ring, realizes the compression and sealing of the upper end of the capsule skin, and the second sealing assembly is driven through the second telescopic cylinder second lifting plate and the inverted cone boss on it, utilizes the expansion of the petal to realize the close adhesion and sealing of the lower end of the capsule skin, and this design effectively solves the problem of the opening positioning and sealing of the airbag bottom, significantly improves the assembly efficiency, the special structure design (the horn -like structure of the upper end diameter big, lower end diameter small) of the forming adsorption cylinder combines the even distribution's air hole, can form stable negative pressure adsorption cavity under the effect of negative pressure module, not only strengthens the stability of the capsule skin in the assembly process, but also ensures that the support positioning ring can be smoothly and accurately embedded in the capsule skin inside, improves the assembly precision, the utility model discloses the ingenious use of cylinder, return spring and other automatic elements, realizes the automatic control of the capsule skin assembly process, not only reduces the difficulty and labor intensity of manual operation, but also improves the automation level of production line, provides powerful support for large-scale, high-efficiency production, through adjusting the number, angle of petal and the size of sealing compression ring and other parameters, the utility model can adapt to the capsule skin assembly demand of different specifications, different materials, has higher flexibility and adaptability, the utility model greatly improves the positioning precision, sealing effect and automation degree of air spring capsule skin assembly, provides more efficient, reliable solution for the manufacture and assembly of air spring. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic drawing of the utility model;

[0019] Figure 2 It is Figure 1 The structure section view of A-A shown in;

[0020] Figure 3 It is Figure 2 The structure enlarged view of B shown in;

[0021] Figure 4 It is the structure explosion schematic drawing of the utility model;

[0022] Figure 5 It is the structure schematic drawing of the utility model in use state;

[0023] Figure 6 It is Figure 5 The structure section view of C-C shown in;

[0024] Figure 7 It is the structure schematic drawing of first sealing assembly of the utility model;

[0025] Figure 8 is the structural schematic view of the second sealing assembly of the utility model;

[0026] Figure 9 is the structural schematic view of the forming adsorption cylinder of the utility model;

[0027] Figure 10 is the structural schematic view of the sealing and expanding mold assembly connected with the second positioning ring of the utility model;

[0028] Figure 11 is Figure 10 the structural section view of D-D shown in the figure;

[0029] Figure 12 is the structural schematic view of the expanding petal of the utility model.

[0030] 1, negative pressure mold group; 101, support sleeve; 102, forming adsorption cylinder; 103, forming cavity; 104, air hole; 105, negative pressure adsorption cavity; 2, first sealing assembly; 201, first fixed plate; 202, first telescopic air cylinder; 203, first lifting plate; 204, feeding hole; 205, sealing pressure ring; 3, second sealing assembly; 301, second fixed plate; 302, second telescopic air cylinder; 303, second lifting plate; 304, inverted conical boss; 4, capsule skin; 5, first positioning ring; 6, second positioning ring; 7, sealing and expanding mold assembly; 701, expanding petal; 702, conical through hole; 703, limiting guide rod; 704, reset spring; 8, positioning reference groove; 9, first extrusion surface; 10, second extrusion surface; 11, first guide sleeve; 12, first guide rod; 13, second guide sleeve; 14, second guide rod; 15, gas path connecting pipe; 16, support reinforcing ring; 17, airflow through hole. DETAILED DESCRIPTION

[0031] The utility model will be further explained in detail in combination with the drawings.

[0032] Please refer to Figures 1 to 12 In order to realize the above object, the utility model provides the following technical scheme:

[0033] A kind of vacuum suction equipment for assembling the bladder skin of rear air spring, including negative pressure module 1;First sealing assembly 2 is equipped on the upper end of negative pressure module 1, wherein second sealing assembly 3 is equipped on the lower end of negative pressure module 1;Negative pressure module 1 includes support sleeve 101, wherein support sleeve 101 inner cavity is equipped with shaped suction cylinder 102, the inner wall of shaped suction cylinder 102 is shaped cavity 103, wherein shaped cavity 103 is used to place bladder skin 4;Shaped suction cylinder 102 is the horn-like structure of the diameter of upper end is large, the diameter of lower end is small, wherein the cavity wall of shaped suction cylinder 102 is evenly equipped with several air holes 104;Due to the horn-like design of shaped suction cylinder 102, bladder skin 4 can be easily put into shaped cavity 103, and the lower end outer wall can be consistent with the inner wall of shaped suction cylinder 102;The outer diameter of shaped suction cylinder 102 is less than the inner diameter of support sleeve 101, wherein support sleeve 101 and shaped suction cylinder 102 form negative pressure suction cavity 105, and negative pressure suction cavity 105 is communicated with shaped cavity 103 by air hole 104;First positioning ring 5 is equipped on the upper end of shaped suction cylinder 102, and the upper end of negative pressure suction cavity 105 is sealed by first positioning ring 5, which ensures the stability of negative pressure environment, prevents air from entering negative pressure suction cavity 105 from upper part and destroys negative pressure effect;Second positioning ring 6 is equipped on the lower end of shaped suction cylinder 102, and the lower end of negative pressure suction cavity 105 is sealed by second positioning ring 6, which ensures the stability of negative pressure environment, prevents air from entering negative pressure suction cavity 105 from lower part and destroys negative pressure effect;

[0034] The first sealing assembly 2 comprises a first fixed plate 201, wherein the first fixed plate 201 is fixedly connected with the outer wall of the support sleeve 101 at the upper end; a first telescopic cylinder 202 is symmetrically arranged below both ends of the first fixed plate 201, wherein the cylinder body of the first telescopic cylinder 202 is fixedly connected with the first fixed plate 201; the piston rod of the first telescopic cylinder 202 penetrates the first fixed plate 201 upward, wherein the top end of the piston rod of the first telescopic cylinder 202 is fixedly connected with a first lifting plate 203; a feeding hole 204 is arranged in the first lifting plate 203 at a position corresponding to the upper end of the support sleeve 101, wherein a sealing compression ring 205 is arranged in the feeding hole 204; the second sealing assembly 3 comprises a second fixed plate 301, wherein the second fixed plate 301 is fixedly connected with the outer wall of the support sleeve 101 at the lower end; a second telescopic cylinder 302 is symmetrically arranged above both ends of the second fixed plate 301, wherein the cylinder body of the second telescopic cylinder 302 is fixedly connected with the second fixed plate 301; the piston rod of the second telescopic cylinder 302 penetrates the second fixed plate 301 downward and is fixedly connected with a second lifting plate 303, wherein a reverse tapered boss 304 is arranged at the middle position of the upper end of the second lifting plate 303; a sealing expansion die assembly 7 is arranged in the second positioning ring 6, wherein the sealing expansion die assembly 7 is movably connected with the second positioning ring 6; the sealing expansion die assembly 7 comprises a plurality of expansion petals 701, wherein the plurality of expansion petals 701 are uniformly arranged along the inner wall of the second positioning ring 6; the plurality of expansion petals 701 are combined to form a tapered through hole 702, wherein the upper end of the reverse tapered boss 304 is arranged in the tapered through hole 702; the outer wall of the reverse tapered boss 304 abuts against the inner wall of the expansion petals 701, respectively, wherein the reverse tapered boss 304 is used to drive the expansion petals 701 to expand or fold.

[0035] When the need to place the skin 4, the first telescopic cylinder 202 piston rod upward, driving the first lifting plate 203 up, so that the feed hole 204 exposed, the skin 4 can be put into the forming adsorption cylinder 102 from the feed hole 204; When the lower end of the skin 4 inserted into the second positioning ring 6 inner wall and the outer wall between the expansion petals 701 provided with positioning reference groove 8 after starting the second drive cylinder driven piston rod downward, push the second lifting plate 303 down, the second lifting plate 303 on the inverted cone boss 304 along the tapered hole 702 down, with the continuation of the process of decline, the inverted cone boss 304 outer wall gradually with the inner wall of the expansion petals 701 contact and push the expansion petals 701 outward expansion, the expansion petals 701 expansion makes the second positioning ring 6 and the forming adsorption cylinder 102 inner wall and the lower end of the skin 4 closely, form a sealed effect; Then through the expansion rubber sleeve (not shown in the figure) push the skin 4 outward expansion and with the forming adsorption cylinder 102 inner wall; Then, start the vacuum cylinder negative pressure system, through the air path connecting pipe 15 and the negative pressure vacuum pump connected, negative pressure adsorption cavity 105 through the air hole 104 and the forming adsorption cylinder 102 inner cavity communication, form a stable adsorption force, the skin 4 firmly adsorbed in the forming adsorption cylinder 102 inner wall; Again start the first telescopic cylinder 202, through the drive first drive cylinder driven first lifting plate 203 down, make the first lifting plate 203 drive the sealing ring 205 down and insert into the skin 4 cavity; The outer wall of the sealing ring 205 and the upper end of the forming adsorption cylinder 102 inner wall cooperate, complete the sealing of the upper end of the skin 4; Then remove the expansion rubber sleeve, then through the support ring feeding mechanism accurately placed in the skin 4 cavity, complete the assembly.

[0036] Please refer to Figure 2 , as an embodiment of the present application, the first positioning ring 5 inner wall and the upper end of the forming adsorption cylinder 102 fixed connection, wherein the first positioning ring 5 outer wall and the upper end of the support sleeve 101 fixed connection; The second positioning ring 6 inner wall and the lower end of the forming adsorption cylinder 102 fixed connection, wherein the second positioning ring 5 outer wall and the lower end of the support sleeve 101 fixed connection.

[0037] In the above scheme, the inner wall of the first positioning ring 5 is fixedly connected with the upper end of the shaped adsorption cylinder 102, ensuring the stable positioning of the shaped adsorption cylinder 102 in the support sleeve 101, wherein the outer wall of the first positioning ring 5 is fixedly connected with the upper end of the support sleeve 101, usually by welding, bolt connection or other reliable fixing mode, ensuring the close connection between the first positioning ring 5 and the support sleeve 101; the connection between the first positioning ring 5 and the shaped adsorption cylinder 102 and the support sleeve 101 forms a seal, preventing air in the negative pressure adsorption cavity 105 from leaking from the upper part, ensuring the stability of the negative pressure environment; by fixing the upper end of the shaped adsorption cylinder 102, the first positioning ring 5 ensures the accurate positioning of the bladder skin 4 during assembly, avoiding the shift or deformation of the bladder skin 4 during negative pressure adsorption; the first positioning ring 5 provides additional support for the shaped adsorption cylinder 102, increasing its structural stability, especially under the action of negative pressure, preventing the shaped adsorption cylinder 102 from deforming due to uneven stress; the inner wall of the second positioning ring 6 is fixedly connected with the lower end of the shaped adsorption cylinder 102, ensuring that the lower end of the shaped adsorption cylinder 102 is also effectively fixed in the support sleeve 101; the outer wall of the second positioning ring 6 is fixedly connected with the lower end of the support sleeve 101, also ensuring the tightness of the connection by a reliable fixing mode; similar to the first positioning ring 5, the second positioning ring 6 also plays a sealing role, preventing air in the negative pressure adsorption cavity 105 from leaking from the lower part, maintaining the stability of the negative pressure environment, and by fixing the lower end of the shaped adsorption cylinder 102, the second positioning ring 6 not only ensures the accurate positioning of the bladder skin 4 during assembly, but also provides additional support for it, especially at the lower part of the bladder skin 4, preventing deformation or falling off due to the action of negative pressure.

[0038] Please refer to Figure 10 , Figure 11 and Figure 12 , as an embodiment of the present application, the number of bulges 701 is 6-10, wherein the bulges 701 are evenly arranged along the inner wall of the second positioning ring 6, and an active gap is arranged between adjacent two bulges 701; the bulge 701 is provided with a limiting guide rod 703 close to one side of the second positioning ring 6, wherein the other end of the limiting guide rod 703 penetrates the second positioning ring 6 and extends into it; the second positioning ring 6 is provided with a reset spring 704 at a position corresponding to the limiting guide rod 703, wherein one end of the reset spring 704 is fixedly connected with the second positioning ring 6, and the other end of the reset spring 704 is fixedly connected with the limiting guide rod 703.

[0039] In the above scheme, the number of bulges 701 is designed to be 6-10, which can ensure sufficient sealing effect while facilitating processing and installation. The shape and size of each bulge 701 is precisely calculated to ensure that they can tightly surround together to form a conical through hole 702. The bulges 701 are evenly distributed along the inner wall of the second positioning ring 6, that is, the interval between them is equal, which can ensure that the bladder skin 4 can be uniformly pressed when it is subjected to negative pressure adsorption, thereby avoiding local deformation or damage of the bladder skin 4. An active gap is provided between two adjacent bulges 701, which allows the bulges 701 to freely expand or contract without interfering with each other when subjected to external force.

[0040] When the inverted conical boss 304 is raised and lowered on the conical through hole 702, the inverted conical boss 304 gradually presses the outer wall of the bulge 701, causing the bulge 701 to expand outward and tightly fit on the lower part of the bladder skin 4, forming an effective seal. This sealing method can ensure that the air in the negative pressure adsorption cavity 105 does not leak out from the lower part of the bladder skin 4. Since the bulges 701 have active gaps between them and can freely expand or contract, this design can adapt to bladder skins 4 of different sizes and shapes, increasing the versatility and flexibility of the equipment.

[0041] The bulges 701 are provided with limiting guide rods 703 on the side close to the second positioning ring 6, and the other end of the guide rods penetrates through the second positioning ring 6 and extends into it. The limiting guide rods 703 provide guidance and limitation for the expansion and contraction of the bulges 701, ensuring that the bulges 701 do not deviate from the predetermined trajectory during movement. Through the limiting action of the limiting guide rods 703, the bulges 701 can expand or contract in a predetermined manner when subjected to external force, thereby maintaining the stability and reliability of the sealing effect. The second positioning ring 6 is provided with return springs 704 inside the position corresponding to the limiting guide rods 703. One end of the springs is fixedly connected to the second positioning ring 6, and the other end is fixedly connected to the limiting guide rods 703. The return springs 704 help the bulges 701 to return to the initial surrounding state after the external force disappears. When the inverted conical boss 304 is reset, the extrusion on the bulges 701 is cancelled, and at this time the return springs 704 push the bulges 701 inward to contract, thereby releasing the extrusion force on the bladder skin 4. This design can ensure that the bulges 701 can automatically reset to the initial state after assembly, preparing for the next assembly operation.

[0042] Please refer to Figure 10 , Figure 11 and Figure 12 as an embodiment of the present utility model, a positioning reference groove 8 is provided between the inner wall of the second positioning ring 6 and the outer wall of the bulges 701, and the lower end of the bladder skin 4 is arranged in the positioning reference groove 8.

[0043] In the above-mentioned scheme, the positioning reference groove 8 is arranged on the inner wall of the second positioning ring 6 and corresponds to the outer wall of the expansion petal 701. The positioning reference groove 8 generally has a specific shape and size to ensure that the lower end of the bladder skin 4 can be accurately placed therein. The position of the positioning reference groove 8 is accurately designed according to the shape and size of the bladder skin 4 to ensure that the bladder skin 4 can maintain a stable position when subjected to negative pressure suction. The positioning reference groove 8 provides a clear positioning point for the lower end of the bladder skin 4, ensuring the accuracy and stability of the bladder skin 4 during assembly. This helps to prevent the bladder skin 4 from shifting or deforming under the action of negative pressure. The positioning reference groove 8 can also provide additional support for the lower part of the bladder skin 4, especially when the bladder skin 4 is subjected to negative pressure suction. This support ensures that the bladder skin 4 will not break or be damaged due to uneven stress. The expansion of the expansion petal 701 not only achieves tight fitting and sealing of the lower part of the bladder skin 4, but also ensures accurate positioning of the bladder skin 4 during assembly through cooperation with the positioning reference groove 8.

[0044] Please refer to Figure 2 , Figure 3 and Figure 7 as an embodiment of the present application. The sealing compression ring 205 is arranged at the lower end of the feed hole 204 and is fixedly connected with the first lifting plate 203. The lower end of the sealing compression ring 205 extends downward into the inner cavity of the shaped suction cylinder 102, and the inner diameter of the sealing compression ring 205 is equivalent to the inner diameter of the feed hole 204.

[0045] In the above-mentioned scheme, the sealing compression ring 205 is an annular component, which is usually made of wear-resistant, corrosion-resistant and elastic materials such as stainless steel, rubber or special synthetic materials. The inner diameter of the sealing compression ring 205 is equivalent to the inner diameter of the feed hole 204 to ensure that when the sealing compression ring 205 is lowered, it can tightly fit the edge of the feed hole 204 to form an effective seal. The sealing compression ring 205 is arranged at the lower end of the feed hole 204 and is fixedly connected with the first lifting plate 203, which means that when the first lifting plate 203 moves up and down, the sealing compression ring 205 will also move. The lower end of the sealing compression ring 205 extends downward into the inner cavity of the shaped suction cylinder 102, so that it can form a tight contact with the inner wall of the shaped suction cylinder 102 and the upper part of the bladder skin 4 during sealing. When the first lifting plate 203 is lowered, the sealing compression ring 205 will tightly fit the edge of the feed hole 204 to prevent air in the negative pressure suction cavity 105 from leaking out of the feed hole 204. This sealing function is crucial for ensuring the stability of the negative pressure environment and maintaining effective negative pressure suction. The sealing compression ring 205 also provides additional support to the upper part of the bladder skin 4 during the lowering process, which helps to prevent the bladder skin 4 from deforming or breaking under the action of negative pressure. At the same time, it can also serve as a positioning point for the bladder skin 4 to ensure that the bladder skin 4 maintains the correct position during assembly.

[0046] Please refer to Figure 2 , Figure 3 and Figure 6 , as an embodiment of the utility model, the outer wall of the sealing compression ring 205 is provided with a first extrusion surface 9 along its circumference, wherein the inner wall of the upper end of the shaped adsorption cylinder 102 is provided with a second extrusion surface 10 corresponding to the first extrusion surface 9 along its circumference; a gap is provided between the first extrusion surface 9 and the second extrusion surface 10, wherein the width of the gap is less than the thickness of the capsule skin 4.

[0047] In the above scheme, the sealing compression ring 205 is an annular component, usually having an inner diameter comparable to the inner diameter of the feed hole 204 to ensure a tight fit; the outer wall of the sealing compression ring 205 is provided with a first extrusion surface 9 along its circumference, the first extrusion surface 9 is a specific area on the outer wall of the sealing compression ring 205, designed to contact and extrude the second extrusion surface 10 of the shaped adsorption cylinder 102; the second extrusion surface 10 is a corresponding surface of the first extrusion surface 9 provided along the circumference of the inner wall of the upper end of the shaped adsorption cylinder 102, which is usually an inclined surface or a conical surface; a gap is provided between the first extrusion surface 9 and the second extrusion surface 10, and the gap is designed to be smaller than the thickness of the capsule skin 4, which means that when the capsule skin 4 is placed between the sealing compression ring 205 and the shaped adsorption cylinder 102, it will be tightly clamped between the two extrusion surfaces.

[0048] When the sealing compression ring 205 is lowered and contacts the shaped adsorption cylinder 102, the gap between the first extrusion surface 9 and the second extrusion surface 10 tightly clamps the capsule skin 4, and since the gap is smaller than the thickness of the capsule skin 4, the capsule skin 4 is extruded and tightly fitted between the two surfaces; this clamping action not only helps to maintain the stability of the capsule skin 4, but also forms an effective seal to prevent air in the negative pressure adsorption cavity 105 from leaking out between the capsule skin 4 and the extrusion surface; through the cooperation of the first extrusion surface 9 and the second extrusion surface 10, the capsule skin 4 is accurately positioned between the sealing compression ring 205 and the shaped adsorption cylinder 102 during assembly; at the same time, the two extrusion surfaces can also provide additional support for the capsule skin 4, which helps to prevent the capsule skin 4 from deforming or rupturing under the action of negative pressure.

[0049] Please refer to Figure 4 , Figure 6 and Figure 7 , as an embodiment of the utility model, the four corners of the first fixed plate 201 are respectively provided with first guide sleeves 11, wherein the four corners of the first lifting plate 203 are respectively provided with first guide rods 12, and the first guide rods 12 are matched with the first guide sleeves 11; the four corners of the second fixed plate 301 are respectively provided with second guide sleeves 13, wherein the four corners of the second lifting plate 303 are respectively provided with second guide rods 14, and the second guide rods 14 are matched with the second guide sleeves 13.

[0050] In the above-mentioned scheme, the first fixed plate 201 is provided with first guide sleeves 11 at the four corners, respectively, wherein the first guide sleeves 11 have smooth inner walls for guiding the guide rods on the first lifting plate 203; the first lifting plate 203 is provided with first guide rods 12 at the four corners, respectively, wherein the first guide rods 12 are cylindrical and matched with the inner walls of the first guide sleeves 11, so as to be freely slidable in the first guide sleeves 11; the cooperation of the first guide sleeves 11 and the first guide rods 12 provides accurate guidance for the first lifting plate 203, when the first lifting plate 203 moves in the vertical direction, the first guide rods 12 will slide in the first guide sleeves 11, ensuring that the first lifting plate 203 moves along the predetermined trajectory; this guiding action helps to maintain the stability and accuracy of the first lifting plate 203, preventing it from deviating or tilting during movement; the first guide sleeves 11 and the first guide rods 12 also serve as supports for the first lifting plate 203. Since the first guide rods 12 are cylindrical and closely matched with the inner walls of the first guide sleeves 11, they can withstand various forces and torques generated by the first lifting plate 203 during movement, and this supporting action helps to ensure the stability and reliability of the first lifting plate 203 during movement; the first guide sleeves 11 and the first guide rods 12 can also serve as limit devices for the first lifting plate 203, by adjusting the height of the first guide sleeves 11 or the length of the guide rods, the movement range of the first lifting plate 203 can be limited; this limiting action helps to prevent the first lifting plate 203 from moving beyond the predetermined range during movement, thereby protecting the safety of the equipment and personnel.

[0051] The second fixed plate 301 is provided with second guide sleeves 13 at the four corners, respectively, wherein the second guide sleeves 13 have the same structure and function as the first guide sleeves 11; the second lifting plate 303 is provided with second guide rods 14 at the four corners, respectively, wherein the second guide rods 14 have the same structure and function as the first guide rods 12 and can be matched with the second guide sleeves 13.

[0052] Please refer to Figure 2 , Figure 6 , as an embodiment of the present application, the support sleeve 101 is provided with a gas connection pipe 15, one end of which is in communication with the negative pressure adsorption cavity 105, and the other end of which is in communication with an external air exchange device through a pipeline.

[0053] In the above scheme, the gas path connecting pipe 15 is a pipe for transmitting gas, which generally has smooth inner walls and certain strength to ensure smooth flow of gas; in this case, one end of the gas path connecting pipe 15 is connected with the negative pressure adsorption cavity 105, and the other end is connected with the external gas exchange equipment through a pipeline; the negative pressure adsorption cavity 105 exchanges gas with the external gas exchange equipment through the gas path connecting pipe 15; the external gas exchange equipment is a device for providing or absorbing gas; the external gas exchange equipment is connected with the gas path connecting pipe 15 through a pipeline, and is used to provide or absorb gas for the negative pressure adsorption cavity 105 to maintain the negative pressure state inside the negative pressure adsorption cavity 105.

[0054] Please refer to Figure 2 、 Figure 9 As an embodiment of the present application, the diameter of the gas hole 104 is comparable to the spacing between two adjacent gas holes 104.

[0055] In the above scheme, the diameter of the gas hole 104 refers to the diameter of the circular cross section of a single gas hole 104 in the shaped adsorption cylinder 102, which has an important influence on the flow performance of the gas flow in this case; the spacing between adjacent gas holes 104 refers to the distance between the centers of two adjacent gas holes 104, which determines the distribution density of the gas holes 104 in the shaped adsorption cylinder 102, and further affects the overall performance of the shaped adsorption cylinder 102; when the diameter of the gas hole 104 is comparable to the spacing between two adjacent gas holes 104, it means that the distribution of the gas holes 104 in the shaped adsorption cylinder 102 is uniform, and each gas hole 104 has enough space to play its function; this design helps to optimize the performance of the shaped adsorption cylinder 102.

[0056] Please refer to Figure 2 、 Figure 9 As an embodiment of the present application, the outer wall of the shaped adsorption cylinder 102 is provided with a plurality of support reinforcing rings 16 along the axial direction, wherein a plurality of airflow through holes 17 are formed in the support reinforcing ring 16; the inner circle of the support reinforcing ring 16 is fixedly connected with the outer wall of the shaped adsorption cylinder 102, and the outer circle of the support reinforcing ring 16 is fixedly connected with the inner wall of the support sleeve 101.

[0057] In the above scheme, the outer wall of the shaped adsorption cylinder 102 is provided with a plurality of support reinforcing rings 16 along the axial direction to increase the strength and stability of the overall structure, wherein the support reinforcing ring 16 is a ring-shaped structural member for enhancing the axial and radial bearing capacity of the shaped adsorption cylinder 102; a plurality of airflow through holes 17 are formed in the support reinforcing ring 16, which are used to reduce weight on one hand and increase air permeability on the other hand; the inner circle of the support reinforcing ring 16 is fixedly connected with the outer wall of the shaped adsorption cylinder 102, and the outer circle is fixedly connected with the inner wall of the support sleeve 101, forming a stable support structure.

[0058] Although the specific embodiments of the present application are described above, those skilled in the art should understand that these are only illustrative, the protection scope of the present application 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 application, but these changes and modifications all fall within the protection scope of the present application.

Claims

1. A vacuum adsorption device for assembling the bladder of a rear air spring, comprising a negative pressure module (1); characterized in that, The negative pressure module (1) is provided with a first sealing component (2) at its upper end and a second sealing component (3) at its lower end. The negative pressure module (1) includes a support sleeve (101), in which a shaped adsorption cylinder (102) is fitted inside the support sleeve (101). The shaped adsorption cylinder (102) has a trumpet-shaped structure with a large diameter at the upper end and a small diameter at the lower end. A plurality of air holes (104) are evenly distributed on the cavity wall of the shaped adsorption cylinder (102). The outer diameter of the shaped adsorption cylinder (102) is smaller than the inner diameter of the support sleeve (101). A negative pressure adsorption cavity (105) is formed between the support sleeve (101) and the shaped adsorption cylinder (102), and the negative pressure adsorption cavity (105) is connected to the air holes (104). The molding adsorption cylinder (102) is connected to the molding cavity (103); the upper end of the molding adsorption cylinder (102) is provided with a first positioning ring (5), and the lower end of the molding adsorption cylinder (102) is provided with a second positioning ring (6); the first positioning ring (5) is used to seal the upper end of the negative pressure adsorption cavity (105), and the second positioning ring (6) is used to seal the lower end of the negative pressure adsorption cavity (105); the first sealing assembly (2) includes a first fixing plate (201), wherein the first fixing plate (201) is fixedly connected to the upper end of the outer wall of the support sleeve (101); the lower ends of the first fixing plate (201) are symmetrically provided with first telescopic cylinders (202), wherein the cylinder body of the first telescopic cylinder (202) is fixedly connected to the first fixing plate (201). The piston rod of the first telescopic cylinder (202) extends upward through the first fixed plate (201), wherein the top end of the piston rod of the first telescopic cylinder (202) is fixedly connected to the first lifting plate (203); the first lifting plate (203) has a feed hole (204) in the middle corresponding to the upper end of the support sleeve (101), wherein a sealing pressure ring (205) is provided in the feed hole (204); the second sealing assembly (3) includes a second fixed plate (301), wherein the second fixed plate (301) is fixedly connected to the lower end of the outer wall of the support sleeve (101); the second fixed plate (301) is symmetrically provided with second telescopic cylinders (302) above both ends of the second fixed plate (301), wherein the cylinder body of the second telescopic cylinder (302) is connected to the second fixed plate (201). The fixed plate (301) is fixedly connected; the piston rod of the second telescopic cylinder (302) passes through the second fixed plate (301) downward and is fixedly connected to the second lifting plate (303), and the second lifting plate (303) has an inverted conical boss (304) at the middle position of its upper end; the second positioning ring (6) is provided with a sealing expansion mold assembly (7), wherein the sealing expansion mold assembly (7) is movably connected to the second positioning ring (6); the sealing expansion mold assembly (7) includes a plurality of expansion petals (701), wherein the plurality of expansion petals (701) are evenly distributed along the inner wall of the second positioning ring (6); the plurality of expansion petals (701) surround to form a conical through hole (702), wherein the upper end of the inverted conical boss (304) is set in the conical through hole (702);The outer wall of the inverted conical boss (304) abuts against the inner wall of the expansion valve (701), wherein the inverted conical boss (304) is used to drive the expansion valve (701) to expand or close.

2. The vacuum adsorption device for assembling the bladder of a rear air spring according to claim 1, characterized in that, The inner wall of the first positioning ring (5) is fixedly connected to the upper end of the forming adsorption cylinder (102), wherein the outer wall of the first positioning ring (5) is fixedly connected to the upper end of the support sleeve (101); the inner wall of the second positioning ring (6) is fixedly connected to the lower end of the forming adsorption cylinder (102), wherein the outer wall of the second positioning ring (6) is fixedly connected to the lower end of the support sleeve (101); a positioning reference groove (8) is provided between the inner wall of the second positioning ring (6) and the outer wall of the expansion valve (701), wherein the lower end of the bladder skin (4) is set in the positioning reference groove (8).

3. The vacuum adsorption device for assembling the bladder of a rear air spring according to claim 1, characterized in that, The expansion valve (701) is provided with a limiting guide rod (703) on the side near the second positioning ring (6), wherein the other end of the limiting guide rod (703) passes through the second positioning ring (6) and extends into it; a return spring (704) is provided inside the second positioning ring (6) at a position corresponding to the limiting guide rod (703), wherein one end of the return spring (704) is fixedly connected to the second positioning ring (6), and the other end of the return spring (704) is fixedly connected to the limiting guide rod (703).

4. The vacuum adsorption device for assembling the bladder of a rear air spring according to claim 1, characterized in that, The sealing ring (205) is disposed at the lower end of the feed hole (204) and fixedly connected to the first lifting plate (203). The lower end of the sealing ring (205) extends downward into the inner cavity of the forming adsorption cylinder (102), and the inner diameter of the sealing ring (205) is equivalent to that of the feed hole (204).

5. The vacuum adsorption device for assembling the bladder of a rear air spring according to claim 4, characterized in that, The outer wall of the sealing ring (205) is provided with a first extrusion surface (9) inclined along its circumference, and the upper inner wall of the molding adsorption cylinder (102) is provided with a second extrusion surface (10) corresponding to the first extrusion surface (9) along its circumference, and a gap is provided between the first extrusion surface (9) and the second extrusion surface (10).

6. The vacuum adsorption device for assembling the bladder of a rear air spring according to claim 1, characterized in that, The first fixed plate (201) is equipped with a first guide sleeve (11) at each of its four corners, and the first lifting plate (203) is equipped with a first guide rod (12) at each of its four corners, and the first guide rod (12) is adapted to the first guide sleeve (11); the second fixed plate (301) is equipped with a second guide sleeve (13) at each of its four corners, and the second lifting plate (303) is equipped with a second guide rod (14) at each of its four corners, and the second guide rod (14) is adapted to the second guide sleeve (13).

7. The vacuum adsorption device for assembling the bladder of a rear air spring according to claim 3, characterized in that, There are 6 to 10 expansion petals (701), which are evenly distributed along the inner wall of the second positioning ring (6), and there is an movable gap between two adjacent expansion petals (701).

8. The vacuum adsorption device for assembling the bladder of a rear air spring according to claim 1, characterized in that, A gas connection pipe (15) is installed on the support sleeve (101), one end of which is connected to the negative pressure adsorption chamber (105), and the other end of which is connected to the external ventilation equipment through a pipeline.

9. The vacuum adsorption device for assembling the bladder of a rear air spring according to claim 1, characterized in that, The diameter of the pore (104) is approximately equal to the distance between two adjacent pores (104).

10. The vacuum adsorption device for assembling the bladder of a rear air spring according to claim 1, characterized in that, The outer wall of the molded adsorption cylinder (102) is provided with multiple sets of supporting reinforcing rings (16) along its axial direction, wherein the supporting reinforcing rings (16) are provided with a number of air passage holes (17); the inner ring of the supporting reinforcing rings (16) is fixedly connected to the outer wall of the molded adsorption cylinder (102), wherein the outer ring of the supporting reinforcing rings (16) is fixedly connected to the inner wall of the supporting sleeve (101).

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