Air bag vulcanizing mechanism

Abstract

The utility model provides a kind of air bag vulcanization mechanism, comprising: mould, including upper shell and lower shell, the upper shell with the annular inner cavity between the lower shell, to be vulcanized air bag is set in the annular inner cavity, the air inlet of the lower shell is correspondingly set with mounting groove in to-be-vulcanized air bag, the inner wall of the mounting groove is communicated with air inlet hole;Mandrel, detachably set in to-be-vulcanized air bag, the position corresponding mounting groove is provided with let slot in the mandrel;Air inlet vulcanization tool, set in mounting groove, connect air inlet hole with air inlet, high-pressure air injected by air inlet hole is transported to to-be-vulcanized air bag from air inlet.Gas bag vulcanization forming, by air inlet vulcanization tool high-pressure air is injected into to-be-vulcanized air bag, provides vulcanization pressure for to-be-vulcanized air bag and makes air bag vulcanization forming;Air bag vulcanization seal, by extrusion of mould and in combination with air inlet vulcanization tool high-pressure air is injected into air bag and makes air bag vulcanization seal.

Description

Technical Field

[0001] This utility model relates to the field of suspended airbag technology and provides an airbag vulcanization mechanism. Background Technology

[0002] A suspension airbag is a rubber-made airbag that uses high-pressure air to form a lubricating film for transporting heavy objects. Existing suspension airbags typically employ monolithic vulcanization, which can lead to inconsistent component performance and low yield rates, making it difficult to meet the high performance and high stability requirements of suspension airbag products and affecting the airbag's lifespan. Utility Model Content

[0003] To address the issues of inconsistent performance and low yield of integrally vulcanized suspension airbag components in existing technologies, this utility model provides an airbag vulcanization mechanism, comprising:

[0004] The mold includes an upper shell and a lower shell, with an annular inner cavity between the upper shell and the lower shell. A vulcanizing airbag is disposed in the annular inner cavity. An installation groove is provided in the lower shell at the air inlet corresponding to the vulcanizing airbag, and an air inlet hole is connected to the inner wall of the installation groove.

[0005] The fixture is detachably fitted into the air bladder to be vulcanized, and a clearance groove is provided in the fixture corresponding to the position of the mounting groove.

[0006] The air inlet vulcanizing device is installed in the mounting groove, connecting the air inlet hole and the air inlet. High-pressure air injected through the air inlet hole is delivered from the air inlet to the air bag to be vulcanized, applying vulcanization pressure to the air bag.

[0007] Specifically, the fixture is ring-shaped and is made of multiple fan-shaped arcs spliced ​​together.

[0008] Specifically, the inlet sulfurizing device includes an air supply bolt, an air supply block, and a nut. The air supply bolt includes a positioning block and an air supply rod. The positioning block and the air supply rod have through air supply holes. The air supply block is provided with a guide hole that connects the air supply hole and the inlet.

[0009] Specifically, the outer surface of the gas delivery rod has a smooth section on one side near the positioning block and a threaded section on the other side. The nut is located inside the gas bag to be vulcanized and is threadedly connected to the outer periphery of the gas delivery rod. The gas bag to be vulcanized is held between the positioning block and the nut.

[0010] Specifically, the positioning block is set in the mounting groove and is in the shape of a frustum. The bottom diameter of the positioning block is smaller than the top diameter, and it has a protruding air inlet end at the axis of the frustum.

[0011] Specifically, the upper side of the gas delivery block is provided with a slot, the shape of which matches the shape of the positioning block. The side wall of the gas delivery block is provided with an air inlet end of a guide hole, and the center of the slot is provided with an air outlet end of a guide hole.

[0012] Specifically, the bottom of the gas supply bolt is provided with a threaded hole, and a screw is threaded into the threaded hole. A through hole is provided in the gas supply block at the position corresponding to the threaded hole.

[0013] Specifically, the bottom of the mounting slot is provided with a slot, and the bottom of the air supply block is provided with a matching limiting block corresponding to the slot.

[0014] Specifically, the outer ring of the annular inner cavity is a continuous arc structure, and the inner ring has two arc-shaped surfaces that contract inward on both the upper and lower sides.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention provides an airbag vulcanization mechanism applied to the step-by-step vulcanization process of airbags. During the vulcanization and molding of the airbag, high-pressure air is injected into the airbag to be vulcanized through the air inlet vulcanizing device, providing vulcanization pressure to vulcanize and mold the airbag. The die serves as the internal support of the airbag, providing shaping for the airbag when it cools after vulcanization, preventing irreversible deformation such as warping, denting, or local collapse due to different cooling rates and shrinkage rates of different parts of the airbag. During the vulcanization and sealing of the airbag, high-pressure air is injected into the airbag through the extrusion of the mold and the air inlet vulcanizing device to seal the airbag. The injection of high-pressure air into the airbag during the sealing process prevents wrinkles from appearing on the surface of the airbag due to accumulation or folding during vulcanization, effectively controlling the production quality of each stage and ensuring the stability of the airbag performance. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the present invention in use during the vulcanization molding process of an airbag;

[0018] Figure 2 This is an enlarged cross-sectional view of the sulfurizing device at the air inlet of this utility model;

[0019] Figure 3 This is a schematic diagram of the sulfurizing device structure at the air inlet of this utility model;

[0020] Figure 4 This is a cross-sectional view of the present invention in use during the vulcanization and sealing process of an airbag.

[0021] Reference numerals: 1. Mold; 11. Upper shell; 12. Lower shell; 13. Annular inner cavity; 14. Arc-shaped surface; 15. Mounting groove; 16. Slot; 17. Air inlet; 2. Air supply bolt; 21. Positioning block; 22. Air supply rod; 23. Air supply hole; 24. Smooth section; 25. Threaded section; 26. Threaded hole; 3. Air supply block; 31. Limiting block; 32. Slot; 33. Guide hole; 34. Through hole; 4. Nut; 5. Fixture; 51. Relief groove; 6. Screw; 7. Circular film; 8. Airbag. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0023] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and 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 of this utility model.

[0024] like Figures 1-4 As shown, this utility model provides an airbag vulcanization mechanism, including a mold 1, a fixture 5, and an air inlet vulcanization device, which is applied to two steps: airbag vulcanization forming and airbag vulcanization sealing. During airbag vulcanization forming, high-pressure air is injected into the airbag 8 to be vulcanized through the air inlet vulcanization device to provide vulcanization pressure for the airbag 8 to be vulcanized and form the airbag. During airbag vulcanization sealing, high-pressure air is injected into the airbag 8 through the extrusion of the mold 1 and the air inlet vulcanization device to vulcanize and seal the airbag.

[0025] Mold 1 is installed in a vulcanizing machine and includes an upper shell 11 and a lower shell 12. An annular inner cavity 13 is located between the upper shell 11 and the lower shell 12, and a vulcanizing airbag is disposed within the annular inner cavity 13. The outer ring of the annular inner cavity 13 is a continuous arc structure, and the inner ring has two arc-shaped surfaces 14 that contract inwards from both the upper and lower sides, pressing the upper and lower sides of the airbag to be vulcanized against the center, thereby applying vulcanizing pressure to the inner circle during the vulcanization sealing of the airbag. An installation groove 15 is provided in the lower shell 12 at the air inlet corresponding to the airbag to be vulcanized. The inner wall of the installation groove 15 has an air inlet hole 17 communicating with the side wall of mold 1.

[0026] The fixture 5 is located inside the airbag and is preferably made of aluminum. It consists of 4-8 fan-shaped arcs, which are spliced ​​together to form a complete circular fixture 5. The fan-shaped arcs can be removed from the inner ring of the airbag after vulcanization. The fixture 5 serves as an internal support for the airbag to be vulcanized, providing shaping for the airbag during the cooling process after vulcanization, and preventing irreversible deformation such as warping, denting, or local collapse due to different cooling rates and shrinkage rates in different parts of the airbag.

[0027] The air inlet vulcanizing device is located in the mounting groove 15 and includes an air supply bolt 2, an air supply block 3, and a nut 4. The air supply bolt 2 includes a positioning block 21 and an air supply rod 22, both of which have through air supply holes 23. The positioning block 21 is located in the mounting groove 15 and is frustum-shaped, with its bottom diameter smaller than its top diameter. It has a protruding air inlet end at the axis of the frustum. The air supply rod 22 is located on top of the positioning block 21 and can extend into the vulcanizing gas bag from the air inlet. The outer surface of the air supply rod 22 has a smooth section 24 on the side near the positioning block 21 and a threaded section 25 on the other side, with the nut 4 installed in the threaded section 25. In use, two annular rubber sheets 7 are inserted into the upper and lower sides of the air inlet, and the nut 4 is tightened from the inside of the air bladder to be vulcanized, pressing the air inlet of the air bladder into the smooth section 24. The air bladder to be vulcanized is held between the positioning block 21 and the nut 4. During vulcanization, vulcanization pressure is applied to the air inlet of the air bladder. A clearance groove 51 is provided in the jig 5 at the position corresponding to the mounting groove 15, and the air delivery rod 22 and the nut 4 are set in the clearance groove 51.

[0028] The air supply block 3 is installed in the mounting groove 15. A slot 16 is provided at the bottom of the mounting groove 15, and a matching limiting block 31 is provided at the bottom of the air supply block 3 corresponding to the slot 16, fixing the air supply block 3 in the mounting groove 15. A slot 32 is provided on the upper side of the air supply block 3, the shape of which matches the shape of the positioning block 21. A guide hole 33 is provided in the air supply block 3 corresponding to the air supply hole 23 and the air inlet hole 17. The air inlet end of the guide hole 33 is located on the side wall of the air supply block 3, matching the position of the air inlet hole 17. The air outlet end of the guide hole 33 is located at the axis of the slot 32. The protruding air inlet end of the positioning block 21 is inserted into the air outlet end of the guide hole 33, connecting the guide hole 33 to the air supply hole 23. High-pressure air injected through the air inlet hole 17 is sequentially injected into the airbag to be vulcanized via the air supply block 3 and the air supply bolt 2, providing vulcanization pressure to the airbag to vulcanize and form it.

[0029] The bottom of the gas supply bolt 2 is provided with a threaded hole 26, and a screw 6 is threaded into the threaded hole 26. Corresponding to the position of the threaded hole 26, a through hole 34 is provided in the gas supply block 3, into which the screw 6 can be inserted. During installation, the screw 6 is inserted into the threaded hole 26, and then the gas supply bolt 2 with the screw 6 inserted is inserted upside down into the gas supply block 3. The relative positions of the gas supply bolt 2 and the gas supply block 3 are positioned by the threaded hole 26, the screw 6, and the through hole 34 to ensure that the gas supply block 3 is installed in place. At the same time, the positioning block 21 of the gas supply bolt 2 adopts a frustum-shaped structure to further assist in the positioning of the gas supply bolt 2.

[0030] In use, first prepare the airbag to be vulcanized. Place isolation cloth on the upper and lower sides of the assembled jig 5, and cover the jig 5 surface with skeleton cloth and rubber material. The isolation cloth is used to prevent the upper and lower sides of the inner ring from sealing during the vulcanization process of the airbag. Evenly spray the release agent into the vulcanizing fixture and mold 1 at the air inlet. Place 2mm thick annular rubber sheets 7 on the upper and lower sides of the air inlet, and insert the air supply rod 22 of the air supply bolt 2 into the air inlet. Use the nut 4 to lock the air inlet. Screw 6 into the perforation 26; use suture thread to cross-stitch the inner hole of the airbag to be vulcanized, forming a tension network with centripetal contraction force to prevent shrinkage during vulcanization; align the air inlet end of the air supply block 3 guide hole 33 with the air inlet 17 of the lower housing 12 and install it into the mounting groove 15; install the assembled airbag to be vulcanized into the lower housing 12, align the air supply bolt 2 and insert it into the slot 32; close the upper housing 11 and install the mold 1 into the vulcanizing machine; connect the air supply pipe at the air inlet 17 and supply air to the airbag to be vulcanized. High-pressure air is introduced into the airbag, applying vulcanization pressure. The vulcanizing machine applies vulcanization temperature to vulcanize and shape the airbag. After vulcanization is complete and the airbag cools, the sutures, release cloth, and nut 4 are removed, and the mold 5 is taken out of the airbag. The rough edges of the airbag are cleaned, and adhesive is applied to the inner circumference area to be sealed. After natural drying, the release cloth is inserted, and adhesive film is applied along the sealing vulcanization area. The inner hole of the airbag is sutured circumferentially through the sutures, and thin adhesive strips are applied along the sutures to seal the needle holes. Release agent is evenly sprayed onto the upper and lower molds, and the airbag is reassembled. The air supply bolt 2 is aligned and inserted into the slot 32 in mold 1. High-pressure air is injected into the airbag to prevent wrinkles from forming on the surface of the airbag due to accumulation or folding during vulcanization. The airbag is sealed by the vulcanization pressure applied by the vulcanizing machine through the inner ring of mold 1. After vulcanization is completed and cooled, the air supply bolt 2 is removed. A nylon plate is inserted from the air inlet and placed under the preset air outlet. The air outlet is punched out on the upper surface of the airbag using a punching device. Finally, the airbag is vulcanized onto the metal frame 2 to complete the production of the airbag.

[0031] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An air bag curing mechanism characterized by comprising: include: The mold (1) includes an upper shell (11) and a lower shell (12). The upper shell (11) and the lower shell (12) have an annular inner cavity (13). The gas bag to be vulcanized is disposed in the annular inner cavity (13). The lower shell (12) has an installation groove (15) corresponding to the air inlet of the gas bag to be vulcanized. The inner wall of the installation groove (15) is connected to an air inlet hole (17). The fixture (5) is detachably fitted into the vulcanizing airbag, and a clearance groove (51) is provided in the fixture (5) corresponding to the position of the mounting groove (15). The air inlet vulcanizing device is installed in the mounting groove (15), connecting the air inlet hole (17) and the air inlet. The high-pressure air injected through the air inlet hole (17) is transported from the air inlet to the air bag to be vulcanized, and vulcanization pressure is applied to the air bag.

2. The bladder curing mechanism of claim 1, wherein The fixture (5) is circular and is made of multiple fan-shaped arcs spliced ​​together.

3. The bladder curing mechanism of claim 1, wherein The inlet sulfurizing device includes an air supply bolt (2), an air supply block (3), and a nut (4). The air supply bolt (2) includes a positioning block (21) and an air supply rod (22). The positioning block (21) and the air supply rod (22) have through air supply holes (23). The air supply block (3) is provided with a guide hole (33) that connects the air supply hole (23) and the inlet (17).

4. The bladder curing mechanism of claim 3, wherein The outer surface of the gas delivery rod (22) is provided with a smooth section (24) on the side near the positioning block (21) and a threaded section (25) on the other side. The nut (4) is located inside the gas bag to be vulcanized and is threadedly connected to the outer periphery of the gas delivery rod (22). The gas bag to be vulcanized is held between the positioning block (21) and the nut (4).

5. The bladder curing mechanism of claim 3, wherein The positioning block (21) is set in the mounting groove (15) and is in the shape of a frustum. The bottom diameter of the positioning block (21) is smaller than the top diameter, and it has a protruding air inlet end at the axis of the frustum.

6. The bladder curing mechanism of claim 5, wherein The upper side of the gas delivery block (3) is provided with a slot (32), the shape of the slot (32) matches the shape of the positioning block (21), the side wall of the gas delivery block (3) is provided with an air inlet end of a guide hole (33), and the center of the slot (32) is provided with an air outlet end of a guide hole (33).

7. The bladder curing mechanism of claim 3, wherein The bottom of the gas supply bolt (2) is provided with a threaded hole (26), and a screw (6) is threadedly connected in the threaded hole (26). A through hole (34) is provided in the gas supply block (3) corresponding to the position of the threaded hole (26).

8. The airbag vulcanization mechanism according to claim 3, characterized in that, The bottom of the mounting slot (15) is provided with a slot (16), and the bottom of the gas delivery block (3) is provided with a matching limiting block (31) corresponding to the slot (16).

9. The bladder curing mechanism of claim 1, wherein The outer ring of the annular inner cavity (13) is a continuous arc structure, and the inner ring has two arc-shaped surfaces (14) that contract inward on the upper and lower sides respectively.

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