evacuated mold

Abstract

The application provides a vacuumizing mold, and belongs to the technical field of molds. The vacuumizing mold comprises an upper mold sleeve, a lower mold sleeve arranged below the upper mold sleeve, a mold body installed in the upper mold sleeve and the lower mold sleeve, an exhaust hole arranged on the mold body, fixing bolts installed between the upper mold sleeve and the mold body and between the lower mold sleeve and the mold body, an exhaust joint arranged on the side surface of the mold body, sealing rings installed on the upper mold sleeve and the lower mold sleeve, a first connecting shell fixedly connected to the side surface of the lower mold sleeve, a communication pipe installed on the first connecting shell, a sealing block connected to the communication pipe, a second connecting shell attached to the outer side of the sealing block, a communication groove, a first through hole and a rotating groove arranged in the first connecting shell, an extension pipe installed on the exhaust joint, a rotating block rotatably installed in the rotating groove, and a second through hole formed in the rotating block. The application solves the problems of the existing tire mold, such as lack of external vacuum structure, incomplete exhaust and poor flowability of rubber.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and more specifically, to a vacuum mold. Background Technology

[0002] Molds are indispensable tools in the manufacturing industry and are widely used in the molding and processing of materials such as plastics and rubber. The structural design of molds directly affects the quality and cost of finished products. In the tire manufacturing process, molds not only determine the tire's shape and size and tread pattern design, but also affect key properties such as the fluidity and vulcanization effect of rubber.

[0003] Utility model patent CN209920334U discloses a tire vulcanizing mold, including an upper mold, a core mold, a lower mold, and a limiting post. When the tire vulcanizing mold is closed, the core mold is located between the upper and lower molds. The upper mold and the core mold are movably connected by the limiting post, allowing the upper mold to move closer to or further away from the core mold along the length of the limiting post. This tire vulcanizing mold has a simple structure, is easy to open after tire vulcanization, and the tire is less likely to be damaged when removed from the mold, thus reducing the structural requirements of the vulcanizing machine. Although the above mold can achieve the function of easy mold opening, existing tire molds lack an external vacuum structure, making it impossible to effectively form a sealed vacuum environment. This results in incomplete venting, poor rubber flowability, high product defect rate, and cumbersome maintenance. Furthermore, existing tire molds cannot use air pressure to press the upper and lower mold sleeves together, requiring additional driving equipment. Utility Model Content

[0004] The purpose of this invention is to address the problems of existing tire molds lacking an external vacuum structure, incomplete venting, and poor rubber flowability.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: Vacuum molds were used to improve the above problems.

[0006] The application is as follows: The device includes an upper mold sleeve, a lower mold sleeve below the upper mold sleeve, a mold body installed inside the upper and lower mold sleeves, an exhaust hole on the mold body, fixing bolts installed between the upper mold sleeve and the mold body, and between the lower mold sleeve and the mold body, an exhaust connector on the side of the mold body, and a sealing ring installed on both the upper and lower mold sleeves.

[0007] As a preferred technical solution of this application, a first connecting shell is fixedly connected to the side of the lower mold sleeve, a connecting pipe is installed on the first connecting shell, a sealing block is connected to the connecting pipe, and a second connecting shell is fitted to the outside of the sealing block.

[0008] As a preferred technical solution of this application, the first connecting shell is provided with a connecting groove, a first through hole and a rotating groove, the exhaust connector is equipped with an extension pipe, a rotating block is rotatably installed in the rotating groove, and a second through hole is opened on the rotating block.

[0009] As a preferred technical solution of this application, a threaded bushing is installed on the connecting pipe, a sealing sleeve is fixedly connected to the sealing block, and a pressure relief valve is installed on the sealing block.

[0010] As a preferred technical solution of this application, the connecting pipe is interconnected with the exhaust connector through the connecting groove and the extension pipe, and two adjacent exhaust connectors are interconnected through the connecting groove.

[0011] As a preferred technical solution of this application, the inner wall of the rotating groove is in contact with the outer wall of the rotating block, and a connecting plate is fixedly connected to the rotating block.

[0012] As a preferred technical solution of this application, both the sealing sleeve and the sealing block are made of rubber, and the sealing block and the threaded bushing are connected by threads.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: In the scheme of this application: 1. The upper and lower mold sleeves and sealing rings form a sealed space around the entire mold. The mold is connected to the vacuum pipeline through the exhaust connector. The mold has its own exhaust holes. The vacuum pipeline is opened according to the equipment operating environment. In this way, the tire inside the mold can be in an environment with internal air pressure and external vacuum, which is conducive to the flow of rubber material and improves the finished product qualification rate. 2. By using the connecting groove, connecting pipe, sealing block, and second connecting shell, the upper and lower mold sleeves are pressed together by the air pressure of the exhaust hole, ensuring the overall stability of the device. When the gas is discharged from the exhaust hole, it can enter the interior of the connecting pipe through the connecting groove. The connecting pipe increases the air pressure in the second connecting shell, thereby pushing the upper mold sleeve downward to ensure that the upper and lower mold sleeves remain pressed together. This solves the problem that existing tire molds cannot use air pressure to press together the upper and lower mold sleeves and require additional driving equipment. When the pressing function is not needed, simply rotate the rotating block to align the first and second through holes, allowing the exhaust connector to connect to the outside of the device, thus enhancing the convenience of using the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the connection structure between the upper mold sleeve and the mold body of this utility model; Figure 2 This is a schematic diagram of the connection structure between the lower mold sleeve and the first connecting shell of this utility model; Figure 3 This is a schematic diagram of the internal structure of the first connecting shell of this utility model; Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A; Figure 5 for Figure 3 Enlarged schematic diagram of the structure at point B.

[0015] The diagram shows: 1. Upper mold sleeve; 2. Lower mold sleeve; 3. Mold body; 4. Vent hole; 5. Fixing bolt; 6. Vent connector; 7. Sealing ring; 8. First connecting shell; 9. Second connecting shell; 10. Sealing block; 11. Pressure relief valve; 12. Connecting pipe; 13. Connecting groove; 14. Extension pipe; 15. First through hole; 16. Rotating groove; 17. Rotating block; 18. Second through hole; 19. Connecting plate; 20. Threaded bushing; 21. Sealing sleeve. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, 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, not all, of the embodiments of this utility model.

[0017] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0018] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] Example 1: like Figures 1-5 As shown, this embodiment proposes a vacuum mold, including an upper mold sleeve 1, a lower mold sleeve 2 below the upper mold sleeve 1, and a mold body 3 installed inside the upper mold sleeve 1 and the lower mold sleeve 2. The mold body 3 has vent holes 4. Fixing bolts 5 are installed between the upper mold sleeve 1 and the mold body 3, and between the lower mold sleeve 2 and the mold body 3. Vent connectors 6 are provided on the side of the mold body 3. Sealing rings 7 are installed on both the upper mold sleeve 1 and the lower mold sleeve 2. The upper mold sleeve 1 and the lower mold sleeve 2 enclose the mold body 3, and the sealing rings 7 ensure a tight seal between the upper mold sleeve 1 and the lower mold sleeve 2 and the mold body 3. Subsequently, by connecting the vent connectors 6 to a vacuum pipeline, the mold body 3 is placed in an environment with internal air pressure and external vacuum, ensuring the fluidity of the rubber compound and improving the production quality of the tire.

[0022] Example 2: The solution in Example 1 will be further described below with reference to its specific working method. like Figures 1-3 As shown, in a preferred embodiment, based on the above method, a first connecting shell 8 is fixedly connected to the side of the lower mold sleeve 2, a connecting pipe 12 is installed on the first connecting shell 8, a sealing block 10 is connected to the connecting pipe 12, and a second connecting shell 9 is fitted to the outside of the sealing block 10. The second connecting shell 9, in conjunction with the sealing block 10, allows the device to change the tightness of the upper and lower mold sleeves by utilizing the air pressure change in the connecting pipe 12.

[0023] like Figure 4 As shown, in a preferred embodiment, based on the above method, the first connecting shell 8 is further provided with a connecting groove 13, a first through hole 15 and a rotating groove 16, an extension pipe 14 is installed on the exhaust connector 6, a rotating block 17 is rotatably installed in the rotating groove 16, and a second through hole 18 is opened on the rotating block 17. The rotating block 17 can rotate stably in the rotating groove 16. When the first through hole 15 and the second through hole 18 coincide, the clamping function on the device can be deactivated.

[0024] like Figure 3 and Figure 5 As shown, in a preferred embodiment, based on the above method, a threaded bushing 20 is installed on the connecting pipe 12, a sealing sleeve 21 is fixedly connected to the sealing block 10, and a pressure relief valve 11 is installed on the sealing block 10. The pressure relief valve 11 can automatically release pressure when the air pressure between the sealing block 10 and the second connecting shell 9 is too high, so as to ensure the safety of the device during use.

[0025] like Figure 4As shown, in a preferred embodiment, based on the above method, the connecting pipe 12 is further connected to the exhaust connector 6 through the connecting groove 13 and the extension pipe 14. Two adjacent exhaust connectors 6 are connected to each other through the connecting groove 13. The two exhaust connectors 6 can be depressurized through a single channel. The inner wall of the rotating groove 16 is in contact with the outer wall of the rotating block 17. A connecting plate 19 is fixedly connected to the rotating block 17. By adjusting the rotation angle of the rotating block 17, the connection state between the connecting groove 13 and the outside of the device is changed.

[0026] like Figure 5 As shown, in a preferred embodiment, based on the above method, both the sealing sleeve 21 and the sealing block 10 are made of rubber. The sealing block 10 and the threaded bushing 20 are connected by threads. By screwing in or out the sealing block 10, the initial height of the sealing block 10 can be adjusted, which facilitates the subsequent removal of the upper mold sleeve 1 from the device.

[0027] Specifically, when using this vacuum mold: (e.g.) Figure 1 As shown, the upper mold sleeve 1 and the lower mold sleeve 2 enclose the mold body 3. The sealing ring 7 ensures the sealing effect between the upper mold sleeve 1 and the lower mold sleeve 2 and the mold body 3. Subsequently, by connecting the exhaust connector 6 to the vacuum pipeline, the mold body 3 is placed in an environment with internal air pressure and external vacuum, which improves the fluidity of the rubber material and ensures the production quality of the tire.

[0028] like Figures 2-5 As shown, the device can rotate the rotating block 17 in the rotating groove 16 by moving the connecting plate 19, so that the positions of the first through hole 15 and the second through hole 18 coincide, thereby changing the communication state between the connecting groove 13 and the outside of the first connecting shell 8. Since the exhaust connector 6 is interconnected with the extension pipe 14 and the connecting groove 13, after the first through hole 15 and the second through hole 18 are intersected, the gas is discharged through the exhaust connector 6, and the gas enters the interior of the second connecting shell 9 through the connecting pipe 12. The increased air pressure in the second connecting shell 9 pushes the upper mold sleeve 1 to move downward, thereby realizing the function of pressing the upper mold sleeve 1 and the lower mold sleeve 2. The pressure relief valve 11 ensures that the air pressure between the second connecting shell 9 and the sealing block 10 is not too high.

[0029] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present utility model.

Claims

1. A vacuum mold, comprising an upper mold sleeve (1), characterized in that, A lower mold sleeve (2) is provided below the upper mold sleeve (1). A mold body (3) is installed inside the upper mold sleeve (1) and the lower mold sleeve (2). A vent hole (4) is provided on the mold body (3). Fixing bolts (5) are installed between the upper mold sleeve (1) and the mold body (3) as well as between the lower mold sleeve (2) and the mold body (3). A vent connector (6) is provided on the side of the mold body (3). A sealing ring (7) is installed on both the upper mold sleeve (1) and the lower mold sleeve (2).

2. The vacuum mold according to claim 1, characterized in that, The lower mold sleeve (2) is fixedly connected to a first connecting shell (8), a connecting pipe (12) is installed on the first connecting shell (8), a sealing block (10) is connected on the connecting pipe (12), and a second connecting shell (9) is fitted to the outside of the sealing block (10).

3. The vacuum mold according to claim 2, characterized in that, The first connecting shell (8) is provided with a connecting groove (13), a first through hole (15) and a rotating groove (16). An extension pipe (14) is installed on the exhaust connector (6). A rotating block (17) is rotatably installed in the rotating groove (16). A second through hole (18) is opened on the rotating block (17).

4. The vacuum mold according to claim 3, characterized in that, A threaded bushing (20) is installed on the connecting pipe (12), a sealing sleeve (21) is fixedly connected to the sealing block (10), and a pressure relief valve (11) is installed on the sealing block (10).

5. The vacuum mold according to claim 4, characterized in that, The connecting pipe (12) is connected to the exhaust connector (6) through the connecting groove (13) and the extension pipe (14), and two adjacent exhaust connectors (6) are connected to each other through the connecting groove (13).

6. The vacuum mold according to claim 5, characterized in that, The inner wall of the rotating groove (16) is in contact with the outer wall of the rotating block (17), and a connecting plate (19) is fixedly connected to the rotating block (17).

7. The vacuum mold according to claim 6, characterized in that, Both the sealing sleeve (21) and the sealing block (10) are made of rubber, and the sealing block (10) and the threaded bushing (20) are connected by threads.

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