An air spring air bag blank shaping device

Abstract

The utility model discloses an air spring air bag blank shaping device, including the shaping cylinder, the shaping cylinder is used for the air bag expansion support and forms the conical cylinder type air bag with preset taper, be equipped with the air hole for blowing air to the air bag in on the shaping cylinder, and the air hole blows air and makes the clearance between air bag and shaping cylinder to facilitate air bag sleeve shaping cylinder, the compressed air is blown out to outside through the air hole setting on the shaping cylinder, and due to the effect of compressed air, there is certain clearance between air bag blank and shaping cylinder, at this moment, hand holds the blank and makes down, and the blank can be relatively easy to suit the surface of the shaping cylinder of conical structure and carries out the shaping, and then the blank after shaping is loaded into the vulcanization capsule, and the above setting structure is simple, saves manpower, thereby greatly improves production efficiency, and due to the clearance of wind pressure, can avoid the blank after suit installation and produce the wrinkle and lead to the uneven surface, improves product quality.

Description

Technical Field

[0001] This utility model relates to the field of air spring production technology, specifically to an air spring bladder blank shaping device. Background Technology

[0002] An air spring is a device that uses air pressure to support and absorb shocks. By adjusting the air pressure inside the air chamber, it allows for continuous adjustment of vehicle height, stiffness, and damping, thus providing a more comfortable ride and more stable driving performance than steel springs.

[0003] The air bladder is the most important component of an air spring, and it commonly comes in two shapes: conical and cylindrical. In the production of conical air bladders, the preformed blank is cylindrical, while the vulcanized bladder is usually conical, similar to the air bladder's curve. Before vulcanization, the preform needs to be fitted into the vulcanized bladder. Since the inner diameter of the preform is smaller than the outer diameter of the bottom of the conical air bladder, this presents a challenge. Manual fitting requires the assistance of an air gun, which is labor-intensive. Furthermore, during the fitting process, the inner rubber layer often folds, resulting in an uneven inner surface of the vulcanized air bladder. Due to the difficulty of fitting, a release agent needs to be sprayed onto the surface of the vulcanized bladder before fitting. Residual release agent on the inner surface of the vulcanized air bladder makes the inner wall slippery, preventing the inner support ring from being installed during the spring assembly process, thus affecting product quality.

[0004] Currently, most shaping devices both domestically and internationally are mechanical. This involves inserting the blank into a straight cylindrical shaping tube composed of several lobes, lifting one end of the tube, and causing the blank on the tube to correspondingly transform into a cone shape. After a period of shaping, the blank achieves the desired conical shape. However, this method results in inconsistent distribution of internal cords in the blank between the parts in contact with and outside the lobes, affecting product performance. Furthermore, this device is complex, costly, and has low reliability. Therefore, how to shape the formed straight cylindrical blank into a cone shape to reduce labor intensity and improve product quality has become an urgent problem to be solved. Utility Model Content

[0005] To address the shortcomings of existing technologies, an air spring bladder blank shaping device is proposed, which solves the problems of difficulty in inserting the bladder blank into the vulcanized capsule and the complex structure of the shaping device in the aforementioned background technologies.

[0006] To achieve the above objectives, the present invention proposes the following technologies: An air spring airbag blank shaping device includes a shaping cylinder, which is used to expand the airbag to form a conical airbag with a preset taper. The shaping cylinder is provided with an air outlet for blowing air into the airbag. Blowing air through the air outlet creates a gap between the airbag and the shaping cylinder so that the airbag can be fitted onto the shaping cylinder.

[0007] Furthermore, the shaping cylinder includes a conical section, and cylindrical sections are coaxially arranged on the upper and lower sides of the conical section, with the conical section and the cylindrical sections on both sides being connected by a smooth rounded corner.

[0008] Furthermore, air vents are provided on the conical section and the cylindrical sections at its upper and lower ends, and several groups of air vents are evenly distributed along the circumference of the shaping cylinder.

[0009] Furthermore, the shaping cylinder is provided with an air chamber, which is connected to an air outlet, and the bottom of the shaping cylinder is provided with an air inlet for supplying air to the air chamber.

[0010] Furthermore, a cylindrical groove is formed inside the shaping cylinder to create the air cavity, and the air outlet is connected to the air cavity through an air passage, which is horizontally arranged along the radial direction of the shaping cylinder.

[0011] Furthermore, the top of the shaping cylinder is provided with an upper cover for sealing the air chamber. The upper cover is fixedly connected to the shaping cylinder by connecting bolts. A sealing ring is provided between the upper cover and the end face of the shaping cylinder, and the sealing ring is located inside the connecting bolts.

[0012] Furthermore, the shaping cylinder is fixed on the base, and an air duct is installed on the air inlet. The air duct is connected to an air compressor, and air is supplied to the air inlet through the air compressor and the air duct.

[0013] Furthermore, the air compressor is connected to a foot switch via a wire, which is located below the base to facilitate control of the air compressor's on / off operation.

[0014] Compared with the prior art, the comprehensive effects brought about by this utility model include: Compressed air is blown out through the air outlet on the shaping cylinder. Due to the action of the compressed air, there is a certain gap between the airbag blank and the shaping cylinder. At this time, the blank is held down and put on, so that the blank can be easily put on the surface of the conical shaping cylinder for shaping. This makes it easier to put the shaped blank into the vulcanizing capsule. The above structure is simple, saves manpower, and thus greatly improves production efficiency. Moreover, the gap created by the air pressure can prevent wrinkles from forming after the blank is put on, which would cause unevenness on the surface and improve product quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a front view structural diagram of an embodiment of the present utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the shaping cylinder according to an embodiment of the present utility model.

[0016] Illustration: 1. Shaping cylinder; 2. Air outlet; 3. Conical section; 4. Air chamber; 5. Air inlet; 6. Air passage; 7. Top cover; 8. Sealing ring; 9. Base; 10. Air duct; 11. Air compressor; 12. Wire; 13. Foot switch. Detailed Implementation

[0017] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] In this document, terms such as “up,” “down,” “left,” “right,” and “top” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] like Figures 1 to 3 As shown, an air spring airbag blank shaping device includes a shaping cylinder 1, which is used to expand the airbag to form a conical airbag with a preset taper. The shaping cylinder 1 is provided with an air outlet 2 for blowing air into the airbag. Blowing air into the air outlet 2 creates a gap between the airbag and the shaping cylinder 1 so that the airbag can be fitted onto the shaping cylinder 1.

[0020] Compressed air is blown out through the air outlet 2 on the shaping cylinder 1. Due to the action of the compressed air, there is a certain gap between the airbag blank and the shaping cylinder 1. At this time, the blank is held down and put on, so that the blank can be easily put on the surface of the cone-shaped shaping cylinder 1 for shaping. This makes it easier to put the shaped blank into the vulcanizing capsule. The above-mentioned structure is simple, saves manpower, and thus greatly improves production efficiency. Moreover, due to the gap generated by the air pressure, wrinkles are avoided after the blank is put on, which would cause unevenness on the surface and improve product quality.

[0021] As can be seen from the above technical solution, the core of this device lies in blowing gas into the blank to form an air film between it and the mold (i.e., the shaping cylinder 1), thereby greatly reducing friction and facilitating the operator to smoothly and quickly fit the blank into the predetermined position of the shaping cylinder 1 with a preset taper. After fitting, shaping is performed. After shaping, air is blown into the inside of the blank again to create a gap, making it easier to remove the formed airbag. At this time, the shaped blank is conical, matching the shape of the vulcanized capsule, thus making it relatively easy to insert the blank into the vulcanized capsule, thereby solving the problem of difficulty in fitting the blank into the vulcanized capsule.

[0022] The air spring bladder blank shaping device proposed in this application can effectively improve the production efficiency of the vulcanization process, reduce the labor intensity of operators, and improve product quality, thus having high practical and economic value.

[0023] In the air spring airbag blank shaping device of this embodiment, the shaping cylinder 1 includes a conical section 3, and cylindrical sections are coaxially arranged on the upper and lower sides of the conical section 3. The conical section 3 and the cylindrical sections on both sides are connected by a smooth rounded corner.

[0024] The shaping cylinder 1 is a key component of this device. Its overall structure is a rotating body, used to expand the airbag blank from the inside, shaping it into a conical shape with a preset taper. The middle part of the shaping cylinder 1 is a conical section 3, with a cylindrical section coaxially connected to its upper and lower sides. The conical section 3 and the cylindrical sections at both ends are smoothly connected by rounded corners. This streamlined design effectively prevents scratching or abrasion of the inner wall of the airbag blank during the airbag assembly process, while also preventing wrinkles.

[0025] In the air spring airbag blank shaping device of this embodiment, air outlet holes 2 are respectively opened on the conical section 3 and the cylindrical sections at its upper and lower ends. The air outlet holes 2 are evenly distributed in several groups along the circumferential direction of the shaping cylinder 1.

[0026] To facilitate easy fitting of the airbag blank onto the shaping cylinder 1, multiple sets of air vents 2 are provided on the cylinder wall of the shaping cylinder 1. Specifically, these air vents 2 are not only provided on the conical section 3, but also on the cylindrical sections at the upper and lower ends of the conical section 3, ensuring the formation of an air film between the airbag blank and the cylinder at different heights, thus guaranteeing a smooth fitting process. Several sets of air vents 2 are evenly distributed along the circumference of the shaping cylinder 1 to ensure that the gas blown from inside the shaping cylinder 1 forms a uniform air film with the inner wall of the airbag blank throughout its entire circumference, avoiding difficulties in fitting or distortion of the airbag blank due to uneven force.

[0027] In the air spring airbag blank shaping device of this embodiment, an air chamber 4 is provided inside the shaping cylinder 1. The air chamber 4 is connected to the air outlet 2. An air inlet 5 is provided at the bottom of the shaping cylinder 1 to supply air to the air chamber 4.

[0028] To achieve centralized air supply, an air chamber 4 is set in the center of the shaping cylinder 1, and an air inlet 5 is opened on one side of the bottom to connect with the air chamber 4 for inputting compressed air into the air chamber 4. Specifically, the air inlet 5 is set on the cylindrical section at the bottom.

[0029] In the air spring airbag blank shaping device of this embodiment, a cylindrical groove is opened in the shaping cylinder 1 to form the air cavity 4, and the air outlet 2 is connected to the air cavity 4 through the air passage 6. The air passage 6 is arranged horizontally along the radial direction of the shaping cylinder 1.

[0030] A cylindrical groove is formed inside the shaping cylinder 1, which constitutes an air cavity 4 surrounding the axis of the shaping cylinder 1. Each air outlet 2 is connected to the central air cavity 4 through an air passage 6 arranged horizontally along the radial direction of the shaping cylinder 1. Compressed air enters the air cavity 4 from the air inlet 5 and is then evenly distributed to each radial air passage 6, and finally ejected from each air outlet 2 to form a gap between the surface of the shaping cylinder 1 and the air bladder blank, which facilitates assembly.

[0031] In the air spring airbag blank shaping device of this embodiment, the top end of the shaping cylinder 1 is provided with an upper cover 7 for sealing the air chamber 4. The upper cover 7 is fixedly connected to the shaping cylinder 1 by connecting bolts. A sealing ring 8 is provided between the upper cover 7 and the end face of the shaping cylinder 1. The sealing ring 8 is located inside the connecting bolts.

[0032] To ensure the airtightness of the air chamber 4, a top cover 7 is installed at the top of the shaping cylinder 1 to seal the upper opening of the air chamber 4. The top cover 7 is fixedly connected to the top surface of the shaping cylinder 1 by multiple connecting bolts. To further ensure the sealing effect, a sealing ring 8 is also press-fitted between the top cover 7 and the end face of the shaping cylinder 1. The sealing ring 8 is located inside the connecting bolts, effectively preventing compressed air from leaking from the joint surface and ensuring the pressure of the gas ejected from the air outlet 2.

[0033] In the air spring airbag blank shaping device of this embodiment, the shaping cylinder 1 is fixed on the base 9, and the air inlet 5 is equipped with an air duct 10. The air duct 10 is connected to the air compressor 11, and the air compressor 11 and the air duct 10 supply air to the air inlet 5.

[0034] Specifically, the shaping cylinder 1 is fixedly mounted on a stable base 9 with a certain height at its bottom. The air compressor 11 serves as the air supply system and is connected to the air inlet 5 at the bottom of the shaping cylinder 1 through the air pipe 10 connected to the air outlet of the air compressor 11, thereby supplying air to the air chamber 4 and the air outlet 2.

[0035] In the air spring airbag blank shaping device of this embodiment, the air compressor 11 is connected to the foot switch 13 via the wire 12. The foot switch 13 is located below the base 9 so as to control the switching of the air compressor 11 to achieve airbag shaping.

[0036] An air compressor 11 is connected to a foot switch 13 via a wire 12. The foot switch 13 is preferably located below the base 9 for easy foot control by the operator. During the bagging operation, the operator simply presses the foot switch 13 to start the air compressor 11, supplying air to the shaping cylinder 1. The air is ejected from the air outlet 2, causing the bag blank to inflate. Releasing the foot switch 13 stops the air supply, and the bag blank contracts under elastic pressure, fitting snugly against the shaping cylinder 1. This design allows the operator to handle the bag blank freely with both hands, greatly improving operational safety and efficiency.

[0037] Based on the above configuration, this application provides an air spring bladder blank shaping device, mainly used to fit a cylindrical air spring bladder blank onto a mold before vulcanization molding. The air spring bladder blank shaping device mainly includes a shaping cylinder 1, a base 9, and an air supply system.

[0038] The working principle of this application is as follows: The operator initially places the cylindrical airbag blank onto the top of the shaping cylinder 1. Then, the operator presses the foot switch 13 to start the air compressor 11. Compressed air enters the air chamber 4 through the air duct 10 and the air inlet 5, and is then sprayed onto the inner wall of the airbag blank through the radial air passage 6 from the evenly distributed air outlets 2. The airflow forms a thin air film between the blank and the surface of the shaping cylinder 1, significantly reducing the coefficient of friction between them. At this time, the operator can easily pull the airbag blank downwards until it completely and flatly wraps around the outer surface of the shaping cylinder 1, completing the airbag shaping operation. After releasing the foot switch, the air supply stops, and the blank relies on its own elastic contraction to tightly adhere to the shaping cylinder 1. After shaping is completed, the air compressor 11 is restarted to spray air to facilitate the removal of the formed blank. At this time, the shape of the blank matches the vulcanizing capsule, preparing for the subsequent vulcanization molding process.

[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "rotation", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] Although embodiments of the present invention have been shown and described in detail, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for shaping an air spring bladder blank, characterized in that, The device includes a shaping cylinder, which is used to expand the airbag to form a conical airbag with a preset taper. The shaping cylinder is provided with an air outlet for blowing air into the airbag. Blowing air into the air outlet creates a gap between the airbag and the shaping cylinder so that the airbag can be fitted onto the shaping cylinder.

2. The air spring bladder blank shaping device according to claim 1, characterized in that, The shaping cylinder includes a conical section, and cylindrical sections are coaxially arranged on the upper and lower sides of the conical section. The conical section and the cylindrical sections on both sides are connected by a smooth rounded corner.

3. The air spring bladder blank shaping device according to claim 2, characterized in that, Air vents are provided on the conical section and the cylindrical sections at its upper and lower ends, and several groups of air vents are evenly distributed along the circumference of the shaping cylinder.

4. The air spring bladder blank shaping device according to claim 3, characterized in that, The shaping cylinder is provided with an air chamber, which is connected to the air outlet. The bottom of the shaping cylinder is provided with an air inlet that connects to the air chamber to supply air to it.

5. The air spring bladder blank shaping device according to claim 4, characterized in that, A cylindrical groove is formed inside the shaping cylinder to create the air cavity. The air outlet is connected to the air cavity through an air passage, which is horizontally arranged along the radial direction of the shaping cylinder.

6. The air spring bladder blank shaping device according to claim 5, characterized in that, The top of the shaping cylinder is provided with a cover for sealing the air chamber. The cover is fixedly connected to the shaping cylinder by connecting bolts. A sealing ring is provided between the cover and the end face of the shaping cylinder. The sealing ring is located inside the connecting bolts.

7. The air spring bladder blank shaping device according to claim 4, characterized in that, The shaping cylinder is fixed on the base, and an air duct is installed on the air inlet. The air duct is connected to an air compressor, and air is supplied to the air inlet through the air compressor and the air duct.

8. The air spring bladder blank shaping device according to claim 7, characterized in that, The air compressor is connected to a foot switch via a wire. The foot switch is located below the base to facilitate the control of the air compressor's on / off state.

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