Expanding tool for air spring forming

Abstract

The utility model discloses an air spring forming expanding tool which comprises an upper cover plate, expanding plates, a center supporting rod and a supporting platform, the top end of the center supporting rod is connected with the center of the upper cover plate, the bottom end of the center supporting rod is fixed on the supporting platform, a plurality of expanding plates are distributed on the periphery of the upper cover plate, and the expanding plates are fixed on the supporting platform. The top end of each expanding plate is movably hinged to the upper cover plate, an upper connecting rod is hinged to the bottom end of each expanding plate, the lower ends of the upper connecting rods are movably hinged to the periphery of a connecting flange, the central supporting rod is sleeved with the connecting flange in a sliding mode, and the connecting flange is driven by a driving mechanism to move up and down along the central supporting rod. According to the expanding tool disclosed by the utility model, the product structure is met, meanwhile, the vulcanization operation of the product is facilitated, and the molded capsule skin can be better sleeved on the vulcanization capsule.

Description

Technical Field

[0001] This utility model relates to a support tooling for air spring forming, belonging to the field of sealing and shock absorption technology. Background Technology

[0002] An air spring is a cord-reinforced rubber bladder filled with compressed air. It utilizes the compressibility of gas to act as a spring, and is a vibration-damping rubber product. Types include pillow-type, gourd-type, and diaphragm-type. Air springs used in automobiles can be broadly categorized into free diaphragm type, hybrid type, sleeve type, and bladder-type air springs. Their rubber bladder structure is similar to that of tubeless tires, consisting of an inner rubber layer (airtight layer), an outer rubber layer, a cord reinforcement layer, and steel wire coils. The load is primarily borne by the cords. The material of the cords is the decisive factor in the air spring's pressure resistance and durability; generally, high-strength polyester or nylon cords are used. The number of cord layers is typically 2 or 4, with each layer crossing and arranged at an angle to the warp direction of the bladder. Compared to metal springs, air springs have advantages such as lighter weight, better comfort, fatigue resistance, and longer service life. They also provide shock absorption and noise reduction. Air springs are widely used in automobiles, trains, and various machinery such as punch presses, providing good sealing performance and reducing the need to replace sealing strips due to grease leakage caused by poor sealing.

[0003] During the molding of air springs, due to structural requirements, some products need to be made into a tapered structure that is narrow at the top and wide at the bottom during pre-molding. This requires a support tooling for air spring molding to meet the product structure requirements while facilitating the vulcanization process, so that the molded bladder can be better fitted onto the vulcanized capsule. Summary of the Invention

[0004] The purpose of this invention is to provide a stretching tooling for air spring molding, which satisfies the product structure while facilitating the vulcanization process, allowing the molded bladder to be better fitted onto the vulcanized capsule.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An air spring forming support fixture includes an upper cover plate, support plates, a central support rod, and a support platform. The top end of the central support rod is connected to the center of the upper cover plate, and the bottom end of the central support rod is fixed to the support platform. Multiple support plates are distributed around the upper cover plate. The top end of each support plate is movably hinged to the upper cover plate, and the bottom end of each support plate is hinged to an upper connecting rod. The lower end of the upper connecting rod is movably hinged around a connecting flange. The connecting flange is slidably fitted onto the central support rod, and the connecting flange is driven by a drive mechanism to move up and down along the central support rod.

[0007] As a further preferred embodiment of this solution, a support rod is provided at the bottom of the support platform.

[0008] As a further preferred embodiment of this solution, the outer diameter of the connecting flange is smaller than the outer diameter of the upper cover plate.

[0009] As a further preferred embodiment of this solution, the drive mechanism includes a handle and a lower connecting rod. The handle is movably mounted below the support platform, the front end of the handle is movably connected to the lower end of the lower connecting rod, and the upper end of the lower connecting rod is movably connected to the connecting flange. During the rotation of the handle, the front end moves upward or downward.

[0010] As a further preferred embodiment of this solution, the handle is rotatably mounted on the support block, and the support block is fixed to the bottom of the support platform.

[0011] As a further preferred embodiment of this solution, two lower connecting rods are provided, and they are symmetrically arranged on both sides of the handle and the connecting flange, respectively.

[0012] As a further preferred embodiment of this solution, the upper and lower ends of the lower connecting rod are rotatably connected to the connecting flange and the handle respectively via pins.

[0013] The beneficial effects of this utility model are: the expansion tooling of this utility model, while meeting the product structure requirements, facilitates the vulcanization operation of the product, and allows the formed capsule skin to be better fitted onto the vulcanized capsule.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the closed state of the expansion tooling of this utility model;

[0016] Figure 2 This is a schematic diagram of the expanded tooling of this utility model in its expanded state;

[0017] Figure 3 This is a cross-sectional schematic diagram of the support tooling of this utility model.

[0018] The markings in the diagram are: 1-upper cover plate, 2-support plate, 3-upper connecting rod, 4-center support rod, 5-lower connecting rod, 6-connecting flange, 7-support platform, 8-support rod, 9-handle, 10-support block. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1 to 3 An air spring forming support fixture includes an upper cover plate 1, a support plate 2, a central support rod 4, and a support platform 7. The top end of the central support rod 4 is connected to the center of the upper cover plate 1, and the bottom end of the central support rod 4 is fixed on the support platform 7. Multiple support plates 2 are distributed around the upper cover plate 1. The top end of each support plate 2 is movably hinged to the upper cover plate 1, and the bottom end of each support plate 2 is hinged to an upper connecting rod 3. The lower end of the upper connecting rod 3 is movably hinged around a connecting flange 6. The connecting flange 6 is slidably fitted on the central support rod 4, and the connecting flange 6 is driven by a drive mechanism to move up and down along the central support rod.

[0021] In this embodiment, a support rod 4 is provided at the bottom of the support platform 7, so that space is reserved at the bottom for installing the drive mechanism.

[0022] In this embodiment, the driving mechanism includes a handle 9 and a lower connecting rod 5. The handle 9 is movably mounted below the support platform 7. The front end of the handle 9 is movably connected to the lower end of the lower connecting rod 5 via a pin, and the upper end of the lower connecting rod 5 is movably connected to the connecting flange 6 via a pin. During the rotation of the handle, the front end moves upward or downward. Specifically, the handle is rotatably mounted on the support block 10, and the support block 10 is fixed to the bottom of the support platform 7.

[0023] In this embodiment, two lower connecting rods 5 are provided, and they are symmetrically arranged on both sides of the handle 9 and the connecting flange 6, respectively.

[0024] The working principle of this expansion fixture: After the bladder skin is pre-formed, it is a straight cylinder; when the expansion fixture is closed, it is also cylindrical. Figure 1 As shown, after the bladder skin is preformed and rolled, the bladder skin is placed on the expansion fixture in the closed state, and then the handle 9 is pressed down. At this time, the support block 10 acts as a fulcrum to pry the connecting flange 6. The connecting flange pushes the upper connecting rod 3, and the upper connecting rod 3 then expands the lower end of the expansion plate 2 through the support to complete the bladder skin preformation.

[0025] This support fixture can be used for bladders of different lengths and sizes. The support angle can be adjusted by adjusting the length of the upper connecting rod 3, thereby meeting the preforming requirements of products of different sizes.

[0026] In summary, this invention satisfies the product structure requirements while facilitating the vulcanization process, allowing the formed capsule shell to fit better onto the vulcanized capsule.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that the above embodiments do not limit the scope of protection of this utility model in any way, and all technical solutions obtained by equivalent substitution or other means fall within the scope of protection of this utility model. Parts not covered by this utility model are the same as or can be implemented using existing technology.

Claims

1. A support tooling for forming an air spring, characterized in that, The device includes a top cover plate, support plates, a central support rod, and a support platform. The top end of the central support rod is connected to the center of the top cover plate, and the bottom end of the central support rod is fixed to the support platform. Multiple support plates are distributed around the top cover plate. The top end of each support plate is movably hinged to the top cover plate, and the bottom end of each support plate is hinged to an upper connecting rod. The lower end of the upper connecting rod is movably hinged around a connecting flange. The connecting flange is slidably fitted onto the central support rod, and the connecting flange is driven by a drive mechanism to move up and down along the central support rod.

2. The expanding tooling for forming an air spring according to claim 1, characterized in that, The bottom of the support platform is equipped with a support rod.

3. The expanding tooling for forming an air spring according to claim 1, characterized in that, The outer diameter of the connecting flange is smaller than the outer diameter of the upper cover plate.

4. The expanding tooling for forming an air spring according to claim 1, characterized in that, The drive mechanism includes a handle and a lower connecting rod. The handle is movably mounted below the support platform. The front end of the handle is movably connected to the lower end of the lower connecting rod, and the upper end of the lower connecting rod is movably connected to the connecting flange. During the rotation of the handle, the front end moves upward or downward.

5. The expanding tooling for forming an air spring according to claim 4, characterized in that, The handle is rotatably mounted on the support block, which is fixed to the bottom of the support platform.

6. The expanding tooling for forming an air spring according to claim 4, characterized in that, Two lower connecting rods are provided, and they are symmetrically arranged on both sides of the handle and the connecting flange, respectively.

7. A support fixture for forming an air spring according to claim 4 or 6, characterized in that, The upper and lower ends of the lower connecting rod are rotatably connected to the connecting flange and the handle respectively via pins.

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