Self-demolding composite rubber sleeve

Abstract

The utility model relates to a self-demolding composite rubber sleeve which is of a circular tube type structure and comprises a demolding layer, a composite layer, inner-layer rubber and outer-layer rubber which are sequentially arranged from inside to outside and are made of PTFE materials, and a plurality of reinforcing ring assemblies used for enhancing the sealing performance of the ends are arranged at the two ends in the demolding layer correspondingly. The adjacent reinforcing ring assemblies located at the same end are arranged at intervals. The sealing performance of the rubber sleeve in mold pressing production and segmented vulcanization stages can be achieved.

Description

Technical Field

[0001] This application relates to the field of rubber belt preparation, and in particular to a self-demolding composite rubber sleeve. Background Art

[0002] A rubber sleeve is a circular tubular rubber product. In the production process of rubber transmission belts, the rubber sleeve is an important tool for producing rubber transmission belts. The main materials of the existing rubber sleeves are butyl rubber and ethylene propylene diene monomer rubber. Then, they are subjected to compression molding production, segmented vulcanization, and jointing. Generally, when demolding, in order to make the inner surface of the rubber sleeve smooth and reusable, a demolding agent must be applied to the inner wall of the rubber sleeve during use. The purpose is to prevent the product from adhering to the rubber sleeve and facilitate the separation of the rubber sleeve from the product. At the same time, during the entire compression molding production and segmented vulcanization processes, the importance of sealing also plays a crucial role.

[0003] Therefore, based on the above defects, the inventor developed a new composite rubber sleeve with the aim of enhancing the sealing performance of the rubber sleeve during the compression molding production and segmented vulcanization stages. Utility Model Content

[0004] In order to achieve the sealing performance of the rubber sleeve during the compression molding production and segmented vulcanization stages.

[0005] A self-demolding composite rubber sleeve provided by this application adopts the following technical solution:

[0006] A self-demolding composite rubber sleeve, the rubber sleeve has a circular tubular structure, and includes a demolding layer, a composite layer, an inner layer rubber, and an outer layer rubber made of PTFE material, which are sequentially arranged from the inside to the outside. At both ends of the demolding layer, a plurality of reinforcing ring assemblies for enhancing the end sealing performance are respectively arranged, and adjacent reinforcing ring assemblies at the same end are arranged at intervals.

[0007] In some embodiments, the reinforcing ring assembly includes three steel wire rings with the same axis center and different diameters. Adjacent two steel wire rings are connected by elastic steel wires evenly distributed along the circumference.

[0008] In some embodiments, two of the steel wire rings are in the same plane, and the diameter of the other steel wire ring is between the diameters of the two steel wire rings in the same plane.

[0009] In some embodiments, the elastic steel wires are all in an arc structure.

[0010] In some embodiments, the arc openings of the elastic steel wires between the two steel wire rings in the same plane face outside the port of the demolding layer, and the other two elastic steel wires are symmetrically arranged and the arc openings face each other.

[0011] In some embodiments, at least one end of the demolding layer is provided with a skirt having an annular shape, a triangular cross-section, or a trapezoidal cross-section, and the reinforcing ring assembly is disposed within the skirt.

[0012] In summary, the present application includes at least one of the following beneficial technical effects: By respectively providing a plurality of reinforcing ring assemblies for enhancing the end sealing performance at both ends within the demolding layer, the rubber sleeve can assist in enhancing the sealing performance during the compression molding production and the segmented vulcanization stages. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a cross-sectional structural schematic diagram of a self-demolding composite rubber sleeve in an embodiment of the present application.

[0014] Figure 2 is Figure 1 a partial enlarged schematic diagram of part A in

[0015] Description of the reference numerals: 1, demolding layer; 2, composite layer; 3, inner layer rubber; 4, outer layer rubber; 5, steel wire ring; 6, elastic steel wire; 7, skirt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following further describes the present application in detail Figure 1 , 2 with reference to the accompanying drawings.

[0017] An embodiment of the present application discloses a self-demolding composite rubber sleeve. The rubber sleeve has an overall circular tube structure and includes, from the inside to the outside, a demolding layer 1 made of PTFE material, a composite layer 2, an inner layer rubber 3, and an outer layer rubber 4. A plurality of reinforcing ring assemblies for enhancing the end sealing performance are respectively disposed at both ends within the demolding layer 1. The adjacent reinforcing ring assemblies at the same end are spaced apart. The reinforcing ring assembly includes three steel wire rings 5 with the same axis center and different diameters. The adjacent two steel wire rings 5 are connected by elastic steel wires 6 evenly distributed along the circumference.

[0018] Among them, two steel wire rings 5 are located in the same plane, and the diameter of the other steel wire ring 5 is between the diameters of the two steel wire rings 5 located in the same plane. That is, the three steel wire rings 5 in each group form an inverted triangular structure, and each steel wire ring 5 is located at the vertex position of the triangle; the elastic steel wires 6 connecting the adjacent two steel wire rings 5 are all in an arc structure. The arc openings of the elastic steel wires 6 between the two steel wire rings 5 located in the same plane face outside the port of the demolding layer 1, and the other two elastic steel wires 6 are symmetrically arranged and the arc openings face each other. During the compression molding production and the segmented vulcanization stages, the settings of the steel wire rings 5 and the elastic steel wires 6 can provide a certain strength of elastic force and supporting force for the end, so that the sealing performance of the end is relatively enhanced.

[0019] In this embodiment, at least one end of the demolding layer 1 is provided with a skirt 7 that is annular and has a triangular or trapezoidal cross-section. The reinforcing ring assembly is disposed within the skirt 7. The provision of the skirt 7 can better assist in sealing.

[0020] The above are all preferred embodiments of this application. The protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A self-release composite rubber sleeve, the rubber sleeve is a circular tube structure, characterized in that: The invention comprises a demoulding layer (1), a composite layer (2), an inner layer of rubber (3), and an outer layer of rubber (4) which are arranged in sequence from the inside to the outside and are made of PTFE material. A plurality of reinforcing ring assemblies for enhancing the sealing performance of the end portions are respectively arranged at both ends of the demoulding layer (1), and adjacent reinforcing ring assemblies located at the same end are arranged at intervals.

2. A self-release composite rubber sleeve according to claim 1, characterized in that: The reinforcement ring assembly comprises three steel wire rings (5) with different diameters and the centers of the three circles being located on the same axis, and two adjacent steel wire rings (5) are connected by elastic steel wires (6) evenly distributed along the circumference.

3. The self-release composite rubber sleeve according to claim 2, characterized in that: Two of the steel wire rings (5) are located in the same plane, and the diameter of the other steel wire ring (5) is between the diameters of the two steel wire rings (5) located in the same plane.

4. The self-release composite rubber sleeve according to claim 3, characterized in that: The elastic steel wires (6) are all in an arc-shaped structure.

5. The self-release composite rubber sleeve according to claim 4, characterized in that: The arc opening of the elastic steel wire (6) between the two steel wire rings (5) located on the same plane faces the outside of the end of the demoulding layer (1), and the other two elastic steel wires (6) are symmetrically arranged with their arc openings facing each other.

6. The self-release composite rubber sleeve according to claim 1, characterized in that: At least one end of the demoulding layer (1) is provided with a skirt (7) in an annular shape with a triangular or trapezoidal cross section, and the reinforcing ring assembly is arranged inside the skirt (7).

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