Automobile shock absorber air spring stiffness valve head and processing equipment thereof

Abstract

The utility model discloses an automobile shock absorber air spring stiffness valve valve head and processing equipment, relate to valve head processing technical field, and the valve head includes metal pipe, and one end of metal pipe is equipped with sealing rubber, and the other end is equipped with limit rubber, one end of metal pipe is equipped with first annular groove for embedding limit rubber, and the other end of metal pipe is equipped with second annular groove, and the side of sealing rubber close to the axle center is integrative and is provided with annular flange for embedding second annular groove, and the side of sealing rubber away from the axle center is integrative and is provided with annular part, and the annular part is wrapped on the metal pipe wall, the utility model discloses when connecting metal pipe with sealing rubber and limit rubber, can embed limit rubber in first annular groove, embed annular flange of sealing rubber in second annular groove, simultaneously, the annular part of sealing rubber is wrapped on the metal pipe wall, and then increase the contact area of limit rubber and sealing rubber and metal pipe, and the sealing property is enhanced simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of valve head processing technology, and in particular to a valve head for an automotive shock absorber air spring stiffness valve and its processing equipment. Background Technology

[0002] The air spring stiffness valve head is a key component in the multi-chamber air suspension stiffness valve, used to control the airflow between different chambers of the air spring. By adjusting the opening and closing state of the valve head, the effective volume of the air spring can be changed, thereby adjusting its stiffness. This adjustment mechanism allows the vehicle to adapt to different road conditions and driving needs, providing the best driving experience.

[0003] The current stiffness valve head is an internal sealing gas component of the stiffness valve, which is composed of a combination of rubber and metal. The metal material (aluminum alloy) can provide high-strength support, while the rubber material, EPDM rubber, provides sealing and cushioning.

[0004] The rubber of the existing stiffness valve head is usually assembled into the metal groove by a snap-fit ​​method. However, the drawback of this snap-fit ​​method is that the fit is poor, there is a possibility of improper assembly, loose assembly and easy detachment. In existing technologies, to improve the bonding stability of rubber and metal, a vulcanization process is usually used to combine the two. First, an adhesive is coated on the metal surface. After the rubber and metal are assembled, they are fed into a vulcanization chamber for heating. However, in actual applications, the vulcanization chamber door needs to be opened every time the material is loaded or unloaded, causing the internal temperature of the vulcanization chamber to drop too quickly. Therefore, each vulcanization process requires a long preheating time, which not only reduces vulcanization efficiency but also increases costs. Utility Model Content

[0005] This utility model provides a valve head for an air spring stiffness valve in an automotive shock absorber and its processing equipment, which can solve the following problems existing in the prior art: Currently, in the vulcanization process of metals and rubber, the vulcanization chamber needs to be preheated for a long time after each feeding, which affects the normal vulcanization process and is too costly.

[0006] A valve head for an air spring stiffness valve of an automobile shock absorber includes a metal tube, one end of which is provided with sealing rubber, and the other end of which is provided with limiting rubber. One end of the metal tube is provided with a first annular groove for embedding the limiting rubber, and the other end of the metal tube is provided with a second annular groove. An annular flange for embedding the second annular groove is integrally provided on the side of the sealing rubber near the axis, and an annular part is integrally provided on the side of the sealing rubber away from the axis. The annular part is wrapped around the wall of the metal tube. The limiting rubber has several sets of limiting protrusions arranged in a circumferential array.

[0007] Preferably, the limiting rubber and sealing rubber are vulcanized and connected to the metal pipe through a vulcanization device.

[0008] A processing equipment for an air spring stiffness valve head of an automotive shock absorber, applied to the aforementioned air spring stiffness valve head of an automotive shock absorber, the vulcanizing equipment includes a workbench, on which a lower mold for assembling a metal tube, sealing rubber and limiting rubber is provided; The workbench is provided with an upper mold for cooperating with the lower mold, and the upper mold is connected to a lifting module that drives its lifting and lowering. The vulcanization equipment also includes a heating module, which is used to heat the mold after it has been closed for vulcanization.

[0009] Preferably, the lower mold has a plurality of assembly slots for embedding the assembled metal tube, sealing rubber and limiting rubber; The upper mold is provided with a corresponding limiting groove for embedding the limiting protrusion.

[0010] Preferably, the lower mold has several sets of first heating chambers surrounding the assembly groove, each first heating chamber communicating with a first air chamber in the lower mold; the upper mold has several sets of second heating chambers, each limiting groove surrounding the outside of the second heating chamber, each second heating chamber communicating with a second air chamber in the upper mold. The heating module includes a gas delivery mechanism for supplying high-temperature gas to each heating chamber.

[0011] Preferably, air inlet slots are provided at the four corners of the lower mold, and the air inlet slots are connected to the first air chamber through air inlet channels. Corresponding air outlet slots are provided at the four corners of the upper mold. The upper mold is provided with an air inlet pipe that communicates with the second air chamber, and the lower mold is provided with an air outlet pipe that communicates with the first air chamber.

[0012] Preferably, a first sealing cylinder is slidably arranged in the air intake groove, and the first sealing cylinder is slidably attached to the wall of the air intake groove. At least one set of first guide rods is fixedly arranged in the air intake channel. A first guide plate fixed to the first sealing cylinder is slidably sleeved on the first guide rod. A first spring is provided on the first guide rod. A first air hole is opened at the end of the first sealing cylinder away from the air intake channel. A second air hole is opened on the side wall of the first sealing cylinder near the first air hole.

[0013] Preferably, a second sealing cylinder is slidably arranged in the air outlet groove, and the second sealing cylinder is slidably attached to the groove wall of the air outlet groove. At least one set of second guide rods is fixedly arranged in the second air cavity. A second guide plate fixed to the second sealing cylinder is slidably sleeved on the second guide rod. A second spring is provided on the second guide rod. The second sealing cylinder extends to the outside of the air outlet groove. A third air hole is opened at the end of the second sealing cylinder away from the second air cavity. A fourth air hole is opened on the side wall of the second sealing cylinder away from the third air hole.

[0014] Preferably, the lifting module includes a lifting platform fixed on the upper mold, a support is fixedly arranged on the worktable, a lifting electric cylinder is provided on the support, and the drive end of the lifting electric cylinder is fixed to the lifting platform.

[0015] Preferably, a screw is also rotatably mounted on the worktable. The screw is connected to the output end of a servo motor fixed on the worktable via a sprocket. A nut is screwed onto the screw, and a bearing plate is fixedly mounted on the nut. The lower mold is fixed on the bearing plate.

[0016] This utility model provides a valve head for an automotive shock absorber air spring stiffness valve and its processing equipment, which has the following beneficial effects: 1) When connecting the metal tube with the sealing rubber and the limiting rubber, the limiting rubber can be embedded in the first annular groove and the annular flange of the sealing rubber can be embedded in the second annular groove. At the same time, the annular part of the sealing rubber wraps around the wall of the metal tube, thereby increasing the contact area between the limiting rubber and the sealing rubber and the metal tube, making the connection stability between the limiting rubber and the sealing rubber and the metal tube higher and the sealing performance enhanced simultaneously. 2) After the upper and lower molds of this utility model are closed, the upper and lower molds can be vulcanized and heated by the heating module. They are kept under high temperature and high pressure for a period of time. At this time, the vulcanizing agent (such as sulfur) in the rubber begins to trigger the cross-linking of the rubber molecular chains. The rubber changes from a plastic body to an elastomer. At the same time, the reactive components in the adhesive layer are activated. On the one hand, the chemical bond with the bottom coating of the metal tube is strengthened. On the other hand, the co-crosslinking reaction occurs with the rubber molecules that are vulcanizing, forming strong chemical bridges such as "CC bond" or "SS bond". After the vulcanization time is over, the lifting module drives the upper mold and the lower mold to separate, remove the parts and cool them. At this time, the sealing rubber and the limiting rubber have been firmly combined with the metal tube. 3) The air inlet pipe of this utility model is connected to the heating tank via an air pump to transport the heated gas to the second air chamber. After the upper mold and the lower mold are closed, the high-temperature gas enters the second air chamber and then enters the first air chamber through the air outlet groove and the air inlet groove in sequence, achieving a uniform heating effect. The other end of the air outlet pipe can be connected to the heating tank via an air pump, thereby realizing the recycling and heating of the high-temperature gas. This not only improves the vulcanization heating efficiency but also reduces the cost. At the same time, the high-temperature gas of this utility model will not diffuse into the air, thus avoiding the heat loss situation in the prior art and ensuring the normal progress of vulcanization. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of a valve head for an air spring stiffness valve in an automotive shock absorber provided by this utility model; Figure 2 A cross-sectional structural diagram of the valve head of an air spring stiffness valve for an automotive shock absorber provided by this utility model; Figure 3 A schematic diagram of the structure of a processing equipment for a valve head of an air spring stiffness valve for an automotive shock absorber provided by this utility model; Figure 4 A schematic diagram of the main view of the processing equipment for the air spring stiffness valve head of an automobile shock absorber provided by this utility model; Figure 5 A schematic diagram of the mold closing structure in a processing equipment for an air spring stiffness valve head of an automotive shock absorber provided by this utility model; Figure 6 A schematic diagram of the mold demolding process in the processing equipment for the valve head of an air spring stiffness valve for an automobile shock absorber provided by this utility model; Figure 7 A schematic diagram of the cross-sectional structure of the mold in the processing equipment for the valve head of the air spring stiffness valve of an automobile shock absorber provided by this utility model; Figure 8 A schematic diagram of the limiting groove in the processing equipment for the valve head of an air spring stiffness valve for an automobile shock absorber provided by this utility model; Figure 9 A schematic diagram of the air chamber structure in a processing equipment for an air spring stiffness valve head of an automotive shock absorber provided by this utility model; Figure 10 A schematic diagram of the sealing cylinder in a processing equipment for a car shock absorber air spring stiffness valve head provided by this utility model.

[0018] Explanation of reference numerals in the attached figures: 1. Metal pipe; 2. Sealing rubber; 3. Limiting rubber; 4. Worktable; 5. Support; 6. Lower mold; 7. Upper mold; 8. Air outlet pipe; 101. First annular groove; 102. Second annular groove; 201. Annular flange; 202. Annular part; 301. Limiting protrusion; 401. Screw; 402. Bearing plate; 403. Servo motor; 404. Sprocket; 501. Lifting cylinder; 502. Lifting platform; 601. Assembly slot; 602. First heating chamber; 603. First air chamber; 6 04. Air inlet slot; 605. First air hole; 606. Second air hole; 607. First guide plate; 608. First guide rod; 609. First spring; 610. Air inlet channel; 611. First sealing cylinder; 701. Second heating chamber; 702. Second air chamber; 703. Air outlet slot; 704. Second sealing cylinder; 705. Third air hole; 706. Fourth air hole; 707. Second guide plate; 708. Second guide rod; 709. Second spring; 710. Limiting slot; 801. Air inlet pipe. Detailed Implementation

[0019] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0020] Example 1

[0021] like Figures 1 to 2 As shown in the figure, the embodiment of this utility model provides a valve head for an air spring stiffness valve of an automobile shock absorber. The valve head includes a metal tube 1, one end of which is provided with a sealing rubber 2, and the other end is provided with a limiting rubber 3. Specifically, to improve the stability and sealing performance of the connection between the metal tube 1, the sealing rubber 2, and the limiting rubber 3, a first annular groove 101 for embedding the limiting rubber 3 is provided at one end of the metal tube 1, and a second annular groove 102 is provided at the other end of the metal tube 1. An annular flange 201 for embedding the second annular groove 102 is integrally provided on the side of the sealing rubber 2 facing the axis. An annular portion 202 is integrally provided on the side of the sealing rubber 2 away from the axis, and the annular portion 202 wraps around the wall of the metal tube 1. It can be noted that in this embodiment, when connecting the metal tube 1 with the sealing rubber 2 and the limiting rubber 3, the limiting rubber 3 can be embedded in the first annular groove 101, and the annular flange 201 of the sealing rubber 2 can be embedded in the second annular groove 102. At the same time, the annular portion 202 of the sealing rubber 2 wraps around the wall of the metal tube 1, thereby increasing the contact area between the limiting rubber 3 and the sealing rubber 2 and the metal tube 1, making the connection stability between the limiting rubber 3 and the sealing rubber 2 and the metal tube 1 higher, and simultaneously enhancing the sealing performance.

[0022] In addition, the limiting rubber 3 of this embodiment is provided with a plurality of limiting protrusions 301 arranged in a circumferential array; specifically, by providing the limiting protrusions 301, the stability of the limiting rubber 3 during application is improved.

[0023] In this embodiment, in order to further improve the stability of the connection between the limiting rubber 3 and the sealing rubber 2 and the metal tube 1, the limiting rubber 3 and the sealing rubber 2 and the metal tube 1 are connected by vulcanization using a vulcanization device. It should be noted that in this embodiment, the limiting rubber 3 and the sealing rubber 2 are connected to the metal tube 1 by a vulcanization device, which makes the limiting rubber 3 and the sealing rubber 2 fit the metal tube 1 well and achieves an integrated effect. In subsequent applications, this avoids loosening and leakage, and extends the service life.

[0024] Example 2

[0025] Please see Figures 2-5 A processing device for the valve head of an air spring stiffness valve for an automotive shock absorber includes a vulcanizing device as described in Example 1. The vulcanizing device includes a workbench 4, on which a lower mold 6 is provided for assembling a metal tube 1, a sealing rubber 2, and a limiting rubber 3. Specifically, in this embodiment, before vulcanizing the metal tube 1, the sealing rubber 2, and the limiting rubber 3, an adhesive is first applied to the connecting surfaces of the metal tube 1 and the sealing rubber 2 and the limiting rubber 3. Then, the sealing rubber 2 and the limiting rubber 3 are assembled onto the metal tube 1. Finally, the assembled metal tube 1, the sealing rubber 2, and the limiting rubber 3 are placed in the lower mold 6 to facilitate subsequent vulcanization. It should be noted that this embodiment does not limit the specific material of the adhesive; existing technology can be used to meet the actual application requirements.

[0026] In this embodiment, the workbench 4 is provided with an upper mold 7 for cooperating with the lower mold 6. The upper mold 7 is connected to a lifting module that drives its lifting and lowering. It can be explained that after the assembled metal tube 1, sealing rubber 2 and limiting rubber 3 are placed on the lower mold 6, the upper mold 7 can be driven to move towards the lower mold 6 through the lifting module, so that the upper mold 7 and the lower mold 6 are closed for subsequent vulcanization treatment.

[0027] As a further embodiment, the vulcanization equipment also includes a heating module, which is used to vulcanize and heat the mold after it is closed. It can be explained that after the upper mold 7 and the lower mold 6 are closed in this embodiment, the upper mold 7 and the lower mold 6 can be vulcanized and heated by the heating module. They are kept at high temperature (such as 140°C - 180°C) and high pressure for a period of time. At this time, the vulcanizing agent (such as sulfur) in the rubber begins to initiate cross-linking of the rubber molecular chains, and the rubber changes from a plastic body to an elastomer. At the same time, the reactive components in the adhesive layer are activated. On the one hand, the chemical bonds with the bottom coating of the metal tube 1 are strengthened, and on the other hand, a co-crosslinking reaction occurs with the rubber molecules that are being vulcanized, forming strong chemical bridges such as "CC bond" or "SS bond". After the vulcanization time is over, the lifting module drives the upper mold 7 and the lower mold 6 to separate, remove the parts and cool them. At this time, the sealing rubber 2 and the limiting rubber 3 have been firmly bonded to the metal tube 1.

[0028] As one possible implementation method of this embodiment, please refer to Figures 6-8 The lower mold 6 has several sets of assembly grooves 601 for embedding the assembled metal tube 1, sealing rubber 2, and limiting rubber 3. The upper mold 7 has corresponding limiting grooves 710 for embedding the limiting protrusions 301. It should be noted that in this embodiment, the sealing rubber 2, metal tube 1, and limiting rubber 3 to be vulcanized are placed into the limiting grooves 710 in sequence and limited by the limiting grooves 710. After the metal tube 1 is embedded, its top opening is flush with the upper surface of the lower mold 6. Furthermore, this embodiment does not limit the number of assembly slots 601 opened on the lower mold 6, as long as it meets the actual application requirements.

[0029] In order to perform vulcanization heating on the upper mold 7 and the lower mold 6, in this embodiment, please refer to... Figures 7-10 The lower mold 6 has several sets of first heating chambers 602 surrounding the assembly groove 601. Each first heating chamber 602 is connected to a first air chamber 603 in the lower mold 6. The upper mold 7 has several sets of second heating chambers 701. Each limiting groove 710 surrounds the outside of the second heating chamber 701. Each second heating chamber 701 is connected to a second air chamber 702 in the upper mold 7. The heating module includes a gas supply mechanism for supplying high-temperature gas to each heating chamber. It can be noted that in this embodiment, when the mold is vulcanized and heated, the heated gas can be supplied to the first air chamber 603 and the second air chamber 702, and then to the first heating chamber 602 and the second heating chamber 701. Through heat conduction, the heat can be transferred to the assembly groove 601 and the limiting groove 710, thereby enabling the rubber to be vulcanized and heated to achieve the vulcanization effect. In this embodiment, to ensure temperature consistency between the upper mold 7 and the lower mold 6 and thus improve the vulcanization effect, air inlet slots 604 are provided at the four corners of the lower mold 6. The air inlet slots 604 are connected to the first air chamber 603 through air inlet channels 610. Correspondingly, air outlet slots 703 are provided at the four corners of the upper mold 7. The upper mold 7 is provided with an air inlet pipe 801 connected to the second air chamber 702, and the lower mold 6 is provided with an air outlet pipe 8 connected to the first air chamber 603. Specifically, in this embodiment, the air inlet pipe 801 is connected to the heating tank through an air pump to transport the heated gas through the air inlet pipe. 801 is conveyed to the second air chamber 702. After the upper mold 7 and the lower mold 6 are closed, the high-temperature gas enters the second air chamber 702 and then enters the first air chamber 603 through the air outlet groove 703 and the air inlet groove 604 in sequence, achieving a uniform heating effect. The other end of the air outlet pipe 8 can be connected to the heating tank through an air pump, thereby realizing the recycling and heating of the high-temperature gas. This not only improves the vulcanization heating efficiency but also reduces the cost. At the same time, the high-temperature gas in this embodiment will not diffuse into the air, thus avoiding the heat loss situation in the prior art and ensuring the normal progress of vulcanization.

[0030] As a further embodiment, a first sealing cylinder 611 is slidably arranged in the air intake groove 604, and the first sealing cylinder 611 is slidably attached to the groove wall of the air intake groove 604. At least one set of first guide rods 608 are fixedly arranged in the air intake channel 610. A first guide plate 607 fixed to the first sealing cylinder 611 is slidably sleeved on the first guide rod 608. A first spring 609 is provided on the first guide rod 608. One end of the first spring 609 is fixed to the first guide plate 607, and the other end is fixed to the end of the first guide rod 608. A first air hole 605 is opened at the end of the first sealing cylinder 611 away from the air intake channel 610. A second air hole 606 is opened on the side wall of the first sealing cylinder 611 near the first air hole 605. The second sealing cylinder 704 is slidably arranged inside the air outlet groove 703, and the second sealing cylinder 704 is slidably attached to the groove wall of the air outlet groove 703. At least one set of second guide rods 708 is fixedly arranged in the second air cavity 702. A second guide plate 707, which is fixed to the second sealing cylinder 704, is slidably sleeved on the second guide rod 708. A second spring 709 is provided on the second guide rod 708. One end of the second spring 709 is fixed to the second guide plate 707, and the other end is fixed to the end of the second guide rod 708. The second sealing cylinder 704 extends to the outside of the air outlet groove 703 and is away from the second air cavity. A third vent 705 is provided at one end of 702, and a fourth vent 706 is provided on the side wall of the second sealing cylinder 704 away from the third vent 705. It can be explained that, in the initial state, the second vent 606 of this embodiment is located in the air inlet groove 604, and the second vent 606 is sealed by the groove wall of the air inlet groove 604, so that outside air cannot enter the air inlet channel 610 through the second vent 606. The fourth vent 706 is located in the air outlet groove 703, and the fourth vent 706 is sealed by the groove wall of the air outlet groove 703, so that outside air cannot enter the second air chamber 702 through the fourth vent 706. During the process of closing the upper mold 7 and the lower mold 6, the second sealing cylinder 704 can be embedded in the air inlet groove 604 to compress the first sealing cylinder 611, so that the first sealing cylinder 611 enters the air inlet channel 610. During the movement, the first sealing cylinder 611 can compress the first spring 609 through the first guide plate 607 and generate elastic force until the second air hole 606 moves to communicate with the air inlet channel 610, and the first sealing cylinder 611 stops moving. When the upper mold 7 continues to move towards the lower mold 6, the second sealing cylinder 704 can retract into the second air cavity 702, and compress the second spring 709 through the second guide plate 707 and generate elastic force until the fourth air hole 706 communicates with the second air cavity 702. Therefore, the high temperature air delivered to the second air cavity 702 can enter the air inlet channel 610 in sequence through the fourth air hole 706, the third air hole 705, the first air hole 605 and the second air hole 606. Correspondingly, when the upper mold 7 moves away from the lower mold 6, the first spring 609 drives the first sealing cylinder 611 to reset, and the second spring 709 drives the second sealing cylinder 704 to reset. Throughout the process, there will be no leakage of high-temperature gas, and the sealing performance is good.

[0031] Furthermore, in this embodiment, the elastic coefficient of the first spring 609 is smaller than that of the second spring 709, so that during compression or reset, the first spring 609 contracts before the second spring 709.

[0032] Please refer to Figures 3-4The lifting module includes a lifting platform 502 fixed on the upper mold 7, a support 5 fixedly arranged on the worktable 4, and a lifting electric cylinder 501 on the support 5. The driving end of the lifting electric cylinder 501 is fixed to the lifting platform 502. Specifically, in this embodiment, the upper mold 7 and the lower mold 6 can be driven to close or demold by the lifting electric cylinder 501.

[0033] To facilitate loading and unloading, a screw 401 is rotatably mounted on the workbench 4. The screw 401 is connected to the output end of a servo motor 403 fixed on the workbench 4 via a sprocket 404. A nut is screwed onto the screw 401, and a support plate 402 is fixedly mounted on the nut. The lower mold 6 is fixed on the support plate 402. It can be noted that in this embodiment, during the loading and unloading of materials in the vulcanization process, the screw 401 can be driven to rotate by the servo motor 403. As the nut moves on the screw 401, the lower mold 6 can be driven to move horizontally via the support plate 402, which facilitates loading and unloading.

[0034] A processing method for a processing equipment for an air spring stiffness valve head of an automotive shock absorber includes the following steps; Please see Figures 2-5 S1. Apply adhesive to the connection surface of the metal tube 1, the sealing rubber 2, and the limiting rubber 3; S2. Assemble the sealing rubber 2 and the limiting rubber 3 onto the metal tube 1; S3. Place the assembled metal tube 1, sealing rubber 2 and limiting rubber 3 into the lower mold 6; S4. Drive the upper mold 7 towards the lower mold 6 through the lifting module, so that the upper mold 7 and the lower mold 6 close together. S5. The upper mold 7 and the lower mold 6 are vulcanized and heated by the heating module and kept at high temperature (such as 140°C - 180°C) and high pressure for a period of time. S6. After the vulcanization time is over, the lifting module drives the upper mold 7 to separate from the lower mold 6, remove the parts and cool them.

[0035] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A valve head for an air spring stiffness valve in an automotive shock absorber, comprising a metal tube (1), characterized in that, One end of the metal tube (1) is provided with sealing rubber (2), and the other end is provided with limiting rubber (3). One end of the metal tube (1) is provided with a first annular groove (101) for embedding the limiting rubber (3), and the other end of the metal tube (1) is provided with a second annular groove (102). The sealing rubber (2) is integrally provided with an annular flange (201) for embedding the second annular groove (102) on the side closer to the axis, and an annular part (202) is integrally provided on the side of the sealing rubber (2) away from the axis. The annular part (202) is wrapped around the wall of the metal tube (1). Among them, the limiting rubber (3) is provided with several sets of limiting protrusions (301) arranged in a circumferential array.

2. The valve head of the air spring stiffness valve for an automotive shock absorber as described in claim 1, characterized in that, The limiting rubber (3) and sealing rubber (2) are connected to the metal pipe (1) by vulcanization through a vulcanization device.

3. A processing equipment for the valve head of an air spring stiffness valve for an automotive shock absorber, characterized in that, The vulcanizing equipment is used in a car shock absorber air spring stiffness valve head as described in claim 2. The vulcanizing equipment includes a workbench (4) and a lower mold (6) for assembling a metal tube (1), a sealing rubber (2) and a limiting rubber (3) on the workbench (4). The workbench (4) is provided with an upper mold (7) for cooperating with the lower mold (6), and the upper mold (7) is connected to a lifting module that drives its lifting and lowering. The vulcanization equipment also includes a heating module, which is used to heat the mold after it has been closed for vulcanization.

4. The processing equipment for the valve head of the air spring stiffness valve for an automotive shock absorber as described in claim 3, characterized in that, The lower mold (6) is provided with several sets of assembly slots (601) for embedding the assembled metal tube (1), sealing rubber (2) and limiting rubber (3). The upper mold (7) is provided with a corresponding limiting groove (710) for embedding the limiting protrusion (301).

5. The processing equipment for the valve head of the air spring stiffness valve for an automotive shock absorber as described in claim 4, characterized in that, The lower mold (6) has several sets of first heating chambers (602) surrounding the assembly groove (601), and each first heating chamber (602) is connected to the first air chamber (603) in the lower mold (6). The upper mold (7) has several sets of second heating chambers (701), and each limiting groove (710) surrounds the outside of the second heating chamber (701). Each second heating chamber (701) is connected to the second air chamber (702) in the upper mold (7). The heating module includes a gas delivery mechanism for supplying high-temperature gas to each heating chamber.

6. The processing equipment for the valve head of the air spring stiffness valve for an automotive shock absorber as described in claim 5, characterized in that, The lower mold (6) has air inlet slots (604) at its four corners. The air inlet slots (604) are connected to the first air chamber (603) through the air inlet channel (610). The upper mold (7) has air outlet slots (703) at its four corners. The upper mold (7) is provided with an air inlet pipe (801) that communicates with the second air chamber (702), and the lower mold (6) is provided with an air outlet pipe (8) that communicates with the first air chamber (603).

7. The processing equipment for the valve head of the air spring stiffness valve for an automotive shock absorber as described in claim 6, characterized in that, The first sealing cylinder (611) is slidably arranged in the air intake groove (604). The first sealing cylinder (611) is slidably attached to the groove wall of the air intake groove (604). At least one set of first guide rods (608) is fixedly arranged in the air intake channel (610). A first guide plate (607) fixed to the first sealing cylinder (611) is slidably sleeved on the first guide rod (608). A first spring (609) is provided on the first guide rod (608). A first air hole (605) is opened at the end of the first sealing cylinder (611) away from the air intake channel (610). A second air hole (606) is opened on the side wall of the first sealing cylinder (611) close to the first air hole (605).

8. The processing equipment for the valve head of the air spring stiffness valve for an automotive shock absorber as described in claim 7, characterized in that, The second sealing cylinder (704) is slidably arranged in the air outlet groove (703). The second sealing cylinder (704) is slidably attached to the groove wall of the air outlet groove (703). At least one set of second guide rods (708) is fixedly arranged in the second air cavity (702). A second guide plate (707) fixed to the second sealing cylinder (704) is slidably sleeved on the second guide rod (708). A second spring (709) is provided on the second guide rod (708). The second sealing cylinder (704) extends to the outside of the air outlet groove (703). A third air hole (705) is opened at the end of the second sealing cylinder (704) away from the second air cavity (702). A fourth air hole (706) is opened on the side wall of the second sealing cylinder (704) away from the third air hole (705).

9. The processing equipment for the valve head of the air spring stiffness valve for an automotive shock absorber as described in claim 3, characterized in that, The lifting module includes a lifting platform (502) fixed on the upper mold (7), a bracket (5) fixedly arranged on the worktable (4), a lifting electric cylinder (501) is provided on the bracket (5), and the driving end of the lifting electric cylinder (501) is fixed to the lifting platform (502).

10. The processing equipment for the valve head of the air spring stiffness valve for an automobile shock absorber as described in any one of claims 3-9, characterized in that, A screw (401) is also rotatably mounted on the workbench (4). The screw (401) is connected to the output end of the servo motor (403) fixed on the workbench (4) via a sprocket (404). A nut is screwed on the screw (401), and a bearing plate (402) is fixed on the nut. The lower mold (6) is fixed on the bearing plate (402).

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