Double-ring air spring leather bag mold

Abstract

The utility model provides a double-ring air spring leather bag mold, and belongs to the technical field of machinery. The problem that an existing air spring leather bag mold is not high in precision is solved. The double-ring air spring leather bag mold comprises an upper mold, a lower mold is buckled to the bottom of the upper mold, vulcanization holes are formed in the upper mold and the lower mold, spring leather bags are arranged in the vulcanization holes, a groove is formed in the upper mold, springs are arranged on the inner wall of the groove, one side of each spring makes contact with a steel ball, and one side of each steel ball makes contact with a conical ring. The spring leather bag is sleeved with a circular ring, a plunger is arranged in the lower die, the top of the plunger is fixedly connected with a pressing disc, heating runners are formed in the surface of the upper die and the surface of the lower die, and an inclined guide column is arranged on the surface of the upper die. According to the utility model, the supporting stability and uniformity are improved, and the machining precision is high.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a mold, particularly a double-ring air spring bladder mold. Background Technology

[0002] Air springs are made by filling a sealed container with compressed air and utilizing the compressibility of gas to achieve their elastic effect. Air springs have ideal non-linear elastic characteristics. After adding a height adjustment device, the vehicle height does not change with the increase or decrease of load. The spring stiffness can be designed to be low, resulting in good ride comfort. However, air spring suspension structures are complex and have high manufacturing costs. Air springs are made using molds.

[0003] For example, Chinese patent literature discloses a vulcanization mold for an air spring bladder [Application No.: 202121691262.9; Authorization Announcement No.: CN215550249U], which includes an upper mold, a middle mold, and a lower mold. The middle mold has at least one vulcanization hole. The upper mold has a first plunger for sealing one end of the vulcanization hole, and the lower mold has a second plunger for sealing the other end of the vulcanization hole. The middle mold has a heating pipe. The bladder is cylindrical, sealed at one end, and sealed and fixed to the second plunger at the other end. The first plunger, the second plunger, the inner wall of the vulcanization hole, and the outer wall of the bladder form a vulcanization chamber. The air spring bladder is fitted over the bladder and located inside the vulcanization chamber. The upper mold has a vacuum main pipe that is connected to the vulcanization chamber. The lower mold has an air filling and emptying pipe that is connected to the inside of the bladder.

[0004] The vulcanization mold structure of the air spring bladder described above is simple and practical. However, the design of the air spring bladder mold adopts a simple upper and lower mold closing structure, which makes it difficult to guarantee the molding accuracy of the bladder. Especially during the high-pressure vulcanization process, the bladder is easily affected by the internal air pressure and the external mold pressure, resulting in deformation and displacement, which leads to unstable finished product dimensions and may even cause quality problems. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the prior art by providing a double-ring air spring bladder mold that effectively prevents the bladder from shifting during vulcanization, improves the stability and uniformity of the support, and enhances the molding accuracy of the bladder.

[0006] The objective of this utility model can be achieved through the following technical solution: A double-ring air spring bladder mold includes an upper mold, with a lower mold fastened to the bottom of the upper mold. Both the upper and lower molds have vulcanization holes inside, and a spring bladder is placed inside each vulcanization hole. The upper mold has a groove inside, and a spring is placed on the inner wall of the groove. One side of the spring contacts a steel ball, and another side of the steel ball contacts a conical ring. A circular ring is fitted around the outside of the spring bladder. A plunger is placed inside the lower mold, and a pressure plate is fixedly connected to the top of the plunger. Heating channels are formed on the surfaces of both the upper and lower molds, and a slanted guide post is provided on the surface of the upper mold. By setting up heating channels, hot air is injected into the inner cavity of the heating channels through an external heating device to heat the mold, resulting in good airflow and improved yield of air springs. The slanted guide post facilitates smooth separation and fastening of the upper and lower molds.

[0007] This double-ring air spring bladder mold incorporates a spring bladder, groove, spring, steel balls, conical ring, circular ring, plunger, and pressure plate. The spring tensions and supports the steel balls, which in turn support the conical ring, thus supporting the outer wall of the air spring bladder. This provides excellent support and prevents displacement. The circular ring further supports the outer wall of the spring bladder, preventing shifting and ensuring positional accuracy. This effectively prevents the bladder from shifting during vulcanization, improving the stability and uniformity of support, simplifying the mold structure, and reducing manufacturing costs.

[0008] In the aforementioned double-ring air spring bladder mold, the top of the pressure plate extends into the inner cavity of the spring bladder, and the bottom of the spring bladder extends between the pressure plate and the plunger. By setting the pressure plate and the plunger, the bottom of the spring bladder is pressed and held, ensuring a stable connection, facilitating the inflation of the spring bladder, and simplifying the molding process of the air spring.

[0009] In the aforementioned double-ring air spring bladder mold, the surface of the lower mold is provided with an air filling hole, and the surface of the pressure plate is provided with an air inlet hole. The air filling hole and the air inlet hole are connected. By providing the air filling hole and the air inlet hole, the top of the air inlet hole is connected to the inner cavity of the spring bladder, which facilitates the connection of an external air filling device to the air filling hole to fill the inside of the spring bladder with air, thus facilitating the molding and processing of the air spring.

[0010] In the aforementioned double-ring air spring bladder mold, a connector is connected to one side of the heating channel, and a connecting pipe is movably connected to one side of the connector. The inner wall of the connecting pipe is movably connected to the connector via a bearing, and the inner wall of the connecting pipe is provided with internal threads. A sealing gasket is provided on one side of the connector. By providing a connecting pipe, it is convenient to connect to an external air supply pipe via threads, facilitating the delivery of hot air. By providing a sealing gasket, the connection between the air supply pipe and the connecting pipe is sealed, improving the sealing performance at this point and preventing hot air leakage.

[0011] In the aforementioned double-ring air spring bladder mold, a tensioning bolt is connected through the surface of the upper mold. One end of the tensioning bolt penetrates into the inner cavity of the groove and contacts a tensioning block. One side of the tensioning block contacts the spring. The tensioning bolt is threadedly connected to the upper mold. By setting the tensioning bolt and tensioning block, rotating the tensioning bolt pushes the tensioning block to move, causing the tensioning block to compress the tension spring, thus adjusting the tension of the spring. This facilitates tension support for the conical ring, effectively shapes and supports the spring bladder, and improves the machining accuracy of the finished product.

[0012] Compared with existing technologies, the advantages of this double-ring air spring bladder mold are as follows: the spring tensions and supports the steel balls, which in turn support the conical ring, thus supporting the outer wall of the air spring bladder. This provides good support and prevents displacement. The circular ring supports the outer wall of the spring bladder, preventing displacement and ensuring positional accuracy. This effectively prevents the bladder from shifting during vulcanization, improving the stability and uniformity of support, simplifying the mold structure, and reducing manufacturing costs. Attached Figure Description

[0013] Figure 1 This is a cross-sectional structural schematic diagram of the double-ring air spring bladder mold.

[0014] Figure 2 This is a mold for a double-ring air spring bladder. Figure 1 A magnified schematic diagram of the local structure at point A in the middle.

[0015] Figure 3 This is a side sectional view of the mold for a double-ring air spring bladder.

[0016] Figure 4 This is a top-view cross-sectional structural diagram of the double-ring air spring bladder mold.

[0017] In the diagram, 1. Upper mold; 2. Lower mold; 3. Vulcanizing hole; 4. Spring bladder; 5. Groove; 6. Spring; 7. Steel ball; 8. Conical ring; 9. Circular ring; 10. Piston; 11. Pressure plate; 12. Air filling hole; 13. Air inlet; 14. Heating channel; 15. Angled guide post; 16. Joint; 17. Connecting pipe; 18. Sealing gasket; 19. Tensioning bolt; 20. Tensioning block. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] like Figure 1 , Figure 2 Diagram and Figure 4As shown, this double-ring air spring bladder mold includes an upper mold 1, a lower mold 2 fastened to the bottom of the upper mold 1, vulcanization holes 3 are opened inside the upper mold 1 and the lower mold 2, a spring bladder 4 is arranged inside the vulcanization holes 3, a groove 5 is opened inside the upper mold 1, a spring 6 is arranged on the inner wall of the groove 5, a steel ball 7 is in contact with one side of the spring 6, a conical ring 8 is in contact with one side of the steel ball 7, a circular ring 9 is sleeved on the outside of the spring bladder 4, a plunger 10 is arranged inside the lower mold 2, a pressure plate 11 is fixedly connected to the top of the plunger 10, heating channels 14 are opened on the surface of both the upper mold 1 and the lower mold 2, and an inclined guide post 15 is arranged on the surface of the upper mold 1.

[0020] To elaborate further, the top of the pressure plate 11 extends into the inner cavity of the spring bladder 4, and the bottom of the spring bladder 4 extends between the pressure plate 11 and the plunger 10. An air inlet 12 is provided on the surface of the lower mold 2, and an air inlet 13 is provided on the surface of the pressure plate 11; the air inlet 12 and the air inlet 13 are connected.

[0021] A connector 16 is connected to one side of the heating flow channel 14. A connecting pipe 17 is movably connected to one side of the connector 16. The inner wall of the connecting pipe 17 is movably connected to the connector 16 through a bearing. The inner wall of the connecting pipe 17 is provided with an internal thread. A sealing gasket 18 is provided on one side of the connector 16. A tensioning bolt 19 is connected through the surface of the upper mold 1. One end of the tensioning bolt 19 penetrates into the inner cavity of the groove 5 and contacts the tensioning block 20. One side of the tensioning block 20 contacts the spring 6. The tensioning bolt 19 is threadedly connected to the upper mold 1.

[0022] In use, the tension bolt 19 is threadedly connected to the upper mold 1, causing the tension bolt 19 to push the tension block 20 to move. The tension block 20 compresses the tension spring 6, which in turn tensions the steel ball 7. The steel ball 7 then tensions the conical ring 8, which provides shaping support for the spring bladder 4. The circular ring 9 provides positioning support for the spring bladder 4, maintaining its dimensional specifications, preventing displacement, and ensuring positional accuracy. Hot air is injected into the inner cavity of the heating channel 14 through an external heating device to heat the mold, ensuring uniform heating of the spring bladder 4 and improving the yield. Air is added to the inside of the spring bladder 4 through an external air filling device connected to the air filling hole 12, facilitating the molding and processing of the air spring.

[0023] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A double-ring air spring bladder mold, comprising an upper mold (1), characterized in that: The bottom of the upper mold (1) is fastened to the lower mold (2). The upper mold (1) and the lower mold (2) are provided with vulcanization holes (3). The vulcanization holes (3) are provided with spring bladders (4). The upper mold (1) is provided with grooves (5). The inner wall of the grooves (5) is provided with springs (6). One side of the springs (6) is in contact with steel balls (7). One side of the steel balls (7) is in contact with conical rings (8). The spring bladders (4) are provided with rings (9). The lower mold (2) is provided with plungers (10). The top of the plungers (10) is fixedly connected to pressure plates (11). The surfaces of the upper mold (1) and the lower mold (2) are provided with heating channels (14). The surface of the upper mold (1) is provided with inclined guide posts (15).

2. The double-ring air spring bladder mold according to claim 1, characterized in that: The top of the pressure plate (11) extends into the inner cavity of the spring bladder (4), and the bottom of the spring bladder (4) extends between the pressure plate (11) and the plunger (10).

3. The double-ring air spring bladder mold according to claim 1, characterized in that: The surface of the lower mold (2) is provided with an air filling hole (12), and the surface of the pressure plate (11) is provided with an air inlet hole (13). The air filling hole (12) and the air inlet hole (13) are connected.

4. The double-ring air spring bladder mold according to claim 1, characterized in that: One side of the heating channel (14) is connected to a connector (16), and one side of the connector (16) is movably connected to a connecting pipe (17). The inner wall of the connecting pipe (17) is movably connected to the connector (16) through a bearing. The inner wall of the connecting pipe (17) is provided with an internal thread, and one side of the connector (16) is provided with a sealing gasket (18).

5. A double-ring air spring bladder mold according to claim 1, characterized in that: A tensioning bolt (19) is connected through the surface of the upper mold (1). One end of the tensioning bolt (19) penetrates into the inner cavity of the groove (5) and contacts the tensioning block (20). One side of the tensioning block (20) contacts the spring (6). The tensioning bolt (19) is threadedly connected to the upper mold (1).

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