Multi-channel rotary seal group for tire production

Abstract

The utility model relates to a kind of multi-path rotary sealing groups for tire production, belong to tire production equipment field.Main shaft is equipped, and the one end of main shaft is equipped with connecting flange, and multiple gas path outlet interfaces are respectively equipped in the circumference of connecting flange, and inner bearing sleeve and outer bearing sleeve are equipped on main shaft, and are connected with main shaft by bearing, several groups of sealing sleeve and sealing spacer are fastened and connected by fixed connection screw rod and fixed connection nut, are fixed by locking nut and main shaft, form multiple sealing cavities, and multiple gas path inlet interfaces are respectively equipped on several groups of sealing sleeve, and are communicated with first gas path outlet interface, second gas path outlet interface, third gas path outlet interface, fourth gas path outlet interface, fifth gas path outlet interface, sixth gas path outlet interface by corresponding air hole on main shaft, and circular J-shaped sealing member is embedded in the both sides of sealing spacer, and the lip of J-shaped sealing member is J-shaped, and the direction of lip position is towards sealing cavity, and the material of J-shaped sealing member is polyimide.

Description

Technical Field

[0001] This utility model relates to the field of tire production equipment, and more specifically to a multi-way rotary sealing assembly for tire production. Background Technology

[0002] As is well known, in the tire manufacturing and processing field, there is a molding process that requires supplying air to rotating equipment components on the main shaft to drive their operation. Traditional designs use rotary joints for single-station operation and multi-station operation with multi-channel rotary seals. However, the Glyd ring combination seals used are subject to high temperature and high speed, and due to the characteristics of the Glyd ring combination seals, wear is aggravated, resulting in serious internal or external leakage. This leads to insufficient system supply pressure, affecting the pressure fluctuation of the supplied medium and poor operational stability, directly impacting the internal and external quality defects of the product, posing a significant quality hazard. Furthermore, external leakage results in a certain amount of energy waste. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, this utility model provides a multi-way rotary sealing assembly for tire production, which solves the problem of early damage to the rotating spindle and sealing components caused by the pre-tightening force of the metal skeleton of the original Glyd ring design. This solves the problem of poor operational stability due to pressure fluctuations in the supplied medium, which directly affects the internal and external quality defects of the product, posing a great quality hazard, and causing energy waste due to external leakage.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a multi-way rotary sealing assembly for tire production, comprising a main shaft, characterized in that one end of the main shaft is provided with a connecting flange, and a first air outlet, a second air outlet, a third air outlet, a fourth air outlet, a fifth air outlet, and a sixth air outlet are respectively provided on the circumference of the connecting flange; an inner bearing sleeve and an outer bearing sleeve are provided on the main shaft, and are connected to the main shaft through bearings; several sets of sealing sleeves and sealing spacers are fastened together by a fixed connecting screw and a fixed connecting nut, and are locked to the main shaft by a locking nut. The system is fixed to form a multi-channel sealing cavity. Several sets of sealing sleeves are respectively provided with a first air inlet, a second air inlet, a third air inlet, a fourth air inlet, a fifth air inlet, and a sixth air inlet. These inlets communicate with the first air outlet, the second air outlet, the third air outlet, the fourth air outlet, the fifth air outlet, and the sixth air outlet through corresponding vent holes on the main shaft. Circular J-shaped seals are embedded on both sides of the sealing sleeves. The lips of the J-shaped seals are J-shaped, and the lip positions face the direction of the sealing cavity. The material of the J-shaped seals is polyimide.

[0005] The inner diameter of the sealing sleeve is consistent with the outer diameter of the sealing lip in the working state.

[0006] In the non-working state, the lip of the J-shaped seal is positioned so that it faces the sealing cavity.

[0007] The beneficial effect of this utility model is that by using the design of the J-shaped multi-way rotary sealing assembly, the lip of the sealing element is squeezed and deformed by the gap between the sealing sleeve and the spacer sleeve under the locking action of the fixing bolt, and the sealing is effectively sealed with the rotating spindle. In case of slight leakage, the locking force can be increased again to squeeze and seal. Attached Figure Description

[0008] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0009] Figure 1 This is a schematic diagram of the structure of the present invention.

[0010] Figure 2 This is a partially enlarged schematic diagram of the present invention.

[0011] Figure 3 This is a magnified schematic diagram of the non-working state design lip of this utility model.

[0012] Figure 4 This is an enlarged schematic diagram of the lip opening in the working sealing state of this utility model.

[0013] In the diagram: 1. Main shaft, 2. Connecting flange, 3. Inner bearing sleeve, 4. Outer bearing sleeve, 5. Bearing, 6. Fixed connecting screw, 7. Fixed connecting nut, 8. Sealing sleeve, 9. Sealing spacer, 10. Locking nut, 11. Sealing cavity.

[0014] M1. J-shaped seal, M2. Non-working lip design, M3. Working lip for sealing.

[0015] A. First air inlet, B. Second air inlet, C. Third air inlet, D. Fourth air inlet, E. Fifth air inlet, F. Sixth air inlet, A1. First air outlet, B1. Second air outlet, C1. Third air outlet, D1. Fourth air outlet, E1. Fifth air outlet, F1. Sixth air outlet. Detailed Implementation

[0016] In the figure, this utility model includes a main shaft 1, with a connecting flange 2 at one end. Around the circumference of the connecting flange 2 are respectively provided a first air outlet A1, a second air outlet B1, a third air outlet C1, a fourth air outlet D1, a fifth air outlet E1, and a sixth air outlet F1. An inner bearing sleeve 3 and an outer bearing sleeve 4 are provided on the main shaft 1, connected to the main shaft 1 via bearings 5. Several sets of sealing sleeves 8 and sealing spacers 9 are fastened together by a fixed connecting screw 6 and a fixed connecting nut 7, and fixed to the main shaft 1 by a locking nut 10, forming a multi-way sealing cavity 11. Several sets of sealing sleeves 8 are respectively provided with a first air inlet A, a second air inlet B, a third air inlet C, a fourth air inlet D, a fifth air inlet E, and a sixth air inlet F, and are connected to the first air path through corresponding vent holes on the main shaft 1. The outlet A1, second air outlet B1, third air outlet C1, fourth air outlet D1, fifth air outlet E1, and sixth air outlet F1 are interconnected, and all control circulation systems can effectively supply power to various parts of the main shaft 1, ensuring stable operation of the equipment. Circular J-shaped seals M1 are embedded on both sides of the sealing sleeve 9. The lips of the J-shaped seals M1 are J-shaped, with the lip facing the sealing cavity 11. The sealing material used for the J-shaped seals M1 is PI (polyimide), a special engineering material. Its mechanical properties (tensile strength exceeding 100MPa), high-temperature resistance (stable operation in high-temperature environments above 300℃ for extended periods), and thinness (minimum processable thickness 2μm) are more conducive to its application in high-speed rotary seals. Its normal operating temperature in production equipment is ≤80℃, and its working pressure is ≤0.8MPa.

[0017] The specific operation is as follows: When the equipment is running normally, the inner bearing sleeve 3, outer bearing sleeve 4, bearing 5, several sets of sealing sleeves 8, sealing spacers 9 and J-shaped seal M1 are assembled by the fixed connecting screw 6 and the fixed connecting nut 7, and fixed to the main shaft 1 by the locking nut 10. In the non-working state, the lip M2 of the J-shaped seal M1 forms the working state sealing lip M3 under the locking and compression deformation of the fixed connecting screw 6, the fixed connecting nut 7 and the locking nut 10, and contacts and seals with the main shaft 1. The inner diameter of the sealing sleeve 8 is consistent with the outer diameter of the working state sealing lip M3, which effectively prevents the disadvantage of the lip flipping upward due to internal pressure. The sealing sleeve 8 and sealing spacer 9 form a multi-channel sealing cavity 11. During the rotation process, the power medium is vented through the first air inlet A, the second air inlet B, the third air inlet C, the fourth air inlet D, the fifth air inlet E, and the sixth air inlet F according to the set program. It is supplied to the rotating equipment parts along the sealing cavity 11 through the vent holes on the main shaft 1 and the first air outlet A1, the second air outlet B1, the third air outlet C1, the fourth air outlet D1, the fifth air outlet E1, and the sixth air outlet F1 to meet its operating function. The non-working state design of the J-shaped seal M1 has the lip of the lip M2 facing the direction of the sealing cavity 11, which better achieves the effect of reverse leakage prevention.

Claims

1. A multi-way rotary seal assembly for tire manufacturing, comprising a main shaft, characterized in that, One end of the main shaft is equipped with a connecting flange. Around the circumference of the connecting flange are respectively provided a first air outlet, a second air outlet, a third air outlet, a fourth air outlet, a fifth air outlet, and a sixth air outlet. An inner bearing sleeve and an outer bearing sleeve are provided on the main shaft, connected to the main shaft via bearings. Several sets of sealing sleeves and sealing spacers are fastened together by a fixing connecting screw and a fixing connecting nut, and then fixed to the main shaft by a locking nut, forming a multi-way sealing cavity. Each of the several sets of sealing sleeves has a first... The air inlet has a second air inlet, a third air inlet, a fourth air inlet, a fifth air inlet, and a sixth air inlet, which are connected to the first air outlet, the second air outlet, the third air outlet, the fourth air outlet, the fifth air outlet, and the sixth air outlet via corresponding vent holes on the main shaft. Circular J-shaped seals are embedded on both sides of the sealing spacer. The lips of the J-shaped seals are J-shaped, with the lip facing the sealing cavity. The J-shaped seals are made of polyimide.

2. The multi-way rotary sealing assembly for tire production according to claim 1, characterized in that... The inner diameter of the sealing sleeve is consistent with the outer diameter of the sealing lip in the working state.

3. The multi-way rotary sealing assembly for tire production according to claim 1, characterized in that... In the non-working state, the lip of the J-shaped seal is positioned so that it faces the sealing cavity.

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