Flexible material connection structure and its preparation method

Abstract

This application discloses a flexible material connection structure and its preparation method. The flexible material connection structure includes an integrally formed first flexible material, a second flexible material, and a rubber connecting part. Both the first and second flexible materials are divided into a connecting section and an extension section. Each connecting section of the first and second flexible materials has several vertical through holes for molten rubber to flow into and solidify, thus achieving a fixed connection with the rubber connecting part in the vertical direction. Several wedge-shaped structures are provided along the length of the connecting sections of the first and second flexible materials to achieve a fixed connection with the rubber connecting part in the horizontal direction; alternatively, both the connecting sections of the first and second flexible materials are protruding block structures. The flexible material connection structure provided by this application can achieve connection without the aid of rigid components, while ensuring both connection and sealing effects, exhibiting high connection strength and good sealing performance.

Description

Technical Field

[0001] This application relates to a flexible material connection structure and its preparation method, belonging to the field of flexible material fixed connection technology. Background Technology

[0002] Flexible materials, as opposed to rigid materials, refer to materials that possess a certain degree of softness and flexibility.

[0003] Flexible materials, due to their varying properties, are applied to different engineering applications. Identical flexible materials can be fixed together using thermofusion welding, but different flexible materials cannot be connected by this method. Existing technologies use riveting to fix two different flexible materials, achieving high connection strength; however, this method creates gaps, failing to achieve a proper seal and resulting in poor airtightness and leakage. Adhesive bonding provides strong sealing, but the connection strength is too weak, making it prone to breakage. Summary of the Invention

[0004] To address the aforementioned problems, this application proposes a flexible material connection structure. By providing vertical through-holes, molten rubber flows into these holes and solidifies, achieving a fixed vertical connection between the first flexible material and the rubber connection portion, and between the second flexible material and the rubber connection portion. By incorporating several wedge-shaped structures, the contact area between the first or second flexible material and the rubber connection portion is increased, thereby increasing resistance and achieving a fixed horizontal connection. Alternatively, protruding block-like structures are provided at the connection sections of the first or second flexible materials to further increase the contact area and resistance, preventing the first or second flexible material from detaching from the rubber connection portion and achieving the connection between the first and second flexible materials. The flexible material connection structure provided by this application enables connection without the aid of rigid components, while simultaneously ensuring both connection and sealing effects, exhibiting high connection strength and excellent sealing performance.

[0005] According to one aspect of this application, a flexible material connection structure is provided, comprising an integrally formed first flexible material, a second flexible material, and a rubber connection portion, wherein both the first flexible material and the second flexible material are divided into a connection segment and an extension segment.

[0006] Both the connecting sections of the first and second flexible materials are provided with several vertical through holes. These vertical through holes allow molten rubber to flow in and solidify, thus achieving a fixed connection with the rubber connecting part in the vertical direction. Several wedge-shaped structures are provided along the length of the connecting sections of the first and second flexible materials to achieve a fixed connection with the rubber connecting part in the horizontal direction; or

[0007] Both the connecting segments of the first flexible material and the connecting segments of the second flexible material are protruding block structures.

[0008] Optionally, the angle between the end of the wedge structure near the first flexible material extension and the first flexible material is 60° to 90°; the angle between the end of the wedge structure near the second flexible material extension and the second flexible material is 60° to 90°.

[0009] Optionally, the length of the wedge structure is not less than twice the thickness of the first flexible material or the second flexible material.

[0010] Optionally, the ratio of the spacing between adjacent vertical through holes to the diameter of the through hole is 3 to 5:1.

[0011] Optionally, the height of the protruding block structure is more than twice the thickness of the first flexible material or the second flexible material; the length of the protruding block structure is not less than 1 / 3 of the length of the rubber connection.

[0012] Optionally, the first flexible material is made of polyethylene, TPO, PVC or TPE; the second flexible material is made of polyethylene, TPO, PVC or TPE.

[0013] Optionally, the material of the rubber connector is one of polyisoprene rubber, styrene-butadiene rubber, cis-butadiene rubber, chloroprene rubber, ethylene propylene rubber, or butyl rubber.

[0014] According to another aspect of this application, a method for preparing the above-mentioned flexible material structure is provided, comprising the following steps:

[0015] (1) Determine the first flexible material and the second flexible material that need to be connected, and open several vertical through holes in the first flexible material connection section and the second flexible material connection section respectively. Use thermoplastic pultrusion molding process to make several wedge-shaped structures in the first flexible material connection section and the second flexible material connection section respectively; or

[0016] The first and second flexible materials that need to be connected are determined, and the first and second flexible material connecting segments are made into protruding block structures using a thermoplastic pultrusion molding process.

[0017] (2) Place the first flexible material connecting segment and the second flexible material connecting segment in a mold, add injection rubber, heat and vulcanize to form a flexible material connecting structure with different flexible materials at both ends and a rubber connecting part in the middle.

[0018] Optionally, the temperature of the thermoplastic pultrusion process is 120℃~240℃, the time is 2min~6min, and the pultrusion speed is ≤4.5m / min.

[0019] Optionally, the temperature for heating and vulcanizing is 120℃~240℃, the time is 2min~6min, and the pressure is 1.0MPa~1.5MPa.

[0020] The beneficial effects that this application may produce include, but are not limited to:

[0021] 1. The flexible material connection structure provided in this application achieves the connection between the first flexible material and the second flexible material by setting a rubber connecting part to fix the first flexible material and the second flexible material to the rubber connecting part respectively; by setting vertical through holes in both the connecting sections of the first flexible material and the connecting section of the second flexible material, the molten rubber flows into the vertical through holes and solidifies, thereby achieving a fixed connection in the vertical direction between the first flexible material and the rubber connecting part, and between the second flexible material and the rubber connecting part; by setting several wedge-shaped structures along the length of the connecting sections of the first flexible material and the second flexible material to increase the contact area between the first flexible material or the second flexible material and the rubber connecting part, the resistance is increased, so that when the first flexible material or the second flexible material is pulled at both ends respectively, the first flexible material or the second flexible material does not detach from the rubber connecting part, thereby achieving a fixed connection in the horizontal direction.

[0022] Alternatively, protruding block-like structures can be provided at the connection sections of the first and second flexible materials to increase the contact area between the first or second flexible material and the rubber connection, thereby increasing resistance. This ensures that when the first or second flexible material is pulled at both ends, it does not detach from the rubber connection, thus achieving the connection between the first and second flexible materials. The flexible material connection structure provided in this application can achieve connection without the aid of rigid components, while ensuring both connection and sealing effects, resulting in high connection strength and good sealing performance.

[0023] 2. The flexible material connection structure provided in this application achieves dual reinforcement and fixation in both vertical and horizontal directions by simultaneously defining the angle between the wedge structure and the first flexible material and the second flexible material, the length of the wedge structure, the ratio of the vertical through hole spacing to the through hole length, and the height and length of the protruding block structure. This enhances the connection strength between the first flexible material or the second flexible material and the rubber connection part, and improves the sealing effect.

[0024] 3. The method for preparing the flexible material connection structure provided in this application has simple operation steps, does not require the use of rigid components, and can achieve both high connection strength and good sealing performance. It is convenient for on-site construction, low in cost, and suitable for large-scale industrial production. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0026] Figure 1 This is a schematic cross-sectional view of the flexible material connection structure involved in Embodiment 1 of this application;

[0027] Figure 2 This is a schematic cross-sectional view of the flexible material connection structure involved in Embodiment 2 of this application.

[0028] List of components and reference numerals:

[0029] 1. Rubber connector; 2. First flexible material; 3. Second flexible material; 4. Wedge-shaped structure; 5. Vertical through hole; 6. Protruding block structure. Detailed Implementation

[0030] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0031] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0033] Furthermore, it should be understood in the description of this application that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0037] Example 1

[0038] refer to Figure 1 The embodiments of this application disclose a flexible material connection structure, including an integrally formed first flexible material 2, a second flexible material 3 and a rubber connection part 1, wherein the first flexible material 2 and the second flexible material 3 are both divided into a connection section and an extension section;

[0039] The connecting sections of the first flexible material 2 and the second flexible material 3 are each provided with several vertical through holes 5. The vertical through holes 5 are used for the molten rubber to flow in and solidify, so as to achieve a fixed connection with the rubber connecting part 1 in the vertical direction. Several wedge-shaped structures 4 are provided along the length direction of the connecting sections of the first flexible material 2 and the second flexible material 3, so as to achieve a fixed connection with the rubber connecting part 1 in the horizontal direction.

[0040] This application achieves the connection between the first flexible material 2 and the second flexible material 3 by setting a rubber connecting part 1 and fixing the first flexible material 2 and the second flexible material 3 to the rubber connecting part 1 respectively. By setting vertical through holes 5 in both the connecting section of the first flexible material 2 and the connecting section of the second flexible material 3, the molten rubber flows into the vertical through holes 5 and solidifies, achieving the vertical fixed connection between the first flexible material 2 and the rubber connecting part 1, and between the second flexible material 3 and the rubber connecting part 1. By setting several wedge-shaped structures 4 along the length of the connecting section of the first flexible material 2 and the connecting section of the second flexible material 3, the contact area between the first flexible material 2 or the second flexible material 3 and the rubber connecting part 1 is increased, and the resistance is increased, so that when the first flexible material 2 or the second flexible material 3 is pulled at both ends respectively, the first flexible material 2 or the second flexible material 3 does not detach from the rubber connecting part 1, achieving the horizontal fixed connection. The flexible material connection structure provided by this application can achieve connection without the aid of rigid components, while ensuring connection effect and sealing effect, with high connection strength and good sealing effect.

[0041] Specifically, this application does not limit the number of vertical through holes 5, the shape of vertical through holes 5, or the number of wedge structures 4. Those skilled in the art can make selections according to the actual situation.

[0042] Preferably, the vertical through hole 5 and the wedge structure 4 are spaced apart.

[0043] In one embodiment, the angle between the end of the wedge structure 4 near the extension of the first flexible material 2 and the first flexible material 2 is 60° to 90°; the angle between the end of the wedge structure 4 near the extension of the second flexible material 3 and the second flexible material 3 is 60° to 90°.

[0044] Specifically, the angle formed between the end of the wedge structure 4 near the extension of the first flexible material 2 and the first flexible material 2 can be 60°, 65°, 70°, 75°, 80°, 85° or 90°; the angle formed between the end of the wedge structure 4 near the extension of the second flexible material 3 and the second flexible material 3 can be 60°, 65°, 70°, 75°, 80°, 85° or 90°.

[0045] In one implementation, the length of the wedge structure 4 is not less than twice the thickness of the first flexible material 2 or the second flexible material 3.

[0046] Specifically, the length of the wedge structure 4 can be 2, 3, 4 or 5 times the thickness of the first flexible material 2 or the second flexible material 3.

[0047] In one implementation, the ratio of the spacing between adjacent vertical through holes 5 to the diameter of the through hole is 3 to 5:1.

[0048] Specifically, the ratio of the spacing between adjacent vertical through holes 5 to the diameter of the through hole can be 3:1, 4:1 or 5:1.

[0049] In a preferred embodiment, the angle between the end of the wedge structure 4 near the extension of the first flexible material 2 and the first flexible material 2 is 75°; the angle between the end of the wedge structure 4 near the extension of the second flexible material 3 and the second flexible material 3 can also be 75°; the length of the wedge structure 4 is 3 times the thickness of the first flexible material 2 or the second flexible material 3; the ratio of the spacing between adjacent vertical through holes 5 to the diameter of the through hole can be 3:1.

[0050] Specifically, the angle, length, and ratio of the spacing between adjacent vertical through holes 5 to the diameter of the through holes of the aforementioned wedge structure 4 are simultaneously limited to achieve optimal connection strength.

[0051] In one embodiment, the first flexible material 2 is made of one of polyethylene, TPO, PVC or TPE; the second flexible material 3 is made of one of polyethylene, TPO, PVC or TPE.

[0052] In one embodiment, the material of the rubber connector 1 is one of polyisoprene rubber, styrene-butadiene rubber, cis-butadiene rubber, chloroprene rubber, ethylene propylene rubber, or butyl rubber.

[0053] This application also provides a method for preparing the above-mentioned flexible material connection structure, including the following steps:

[0054] (1) Determine the first flexible material 2 and the second flexible material 3 that need to be connected, open several vertical through holes 5 in the connection section of the first flexible material 2 and the connection section of the second flexible material 3, and use thermoplastic pultrusion molding process to make several wedge structures 4 in the connection section of the first flexible material 2 and the connection section of the second flexible material 3 respectively.

[0055] (2) The first flexible material 2 connecting segment and the second flexible material 3 connecting segment are placed in a mold, and the injected rubber is added and heated for vulcanization to form a flexible material connecting structure with different flexible materials at both ends and a rubber connecting part 1 in the middle.

[0056] In one implementation method, the temperature of the thermoplastic pultrusion process is 120℃~240℃, the time is 2min~6min, and the pultrusion speed is ≤4.5m / min.

[0057] In one implementation method, the temperature for heating and vulcanization is 120℃~240℃, the time is 2min~6min, and the pressure is 1.0MPa~1.5MPa.

[0058] The method for preparing the flexible material connection structure provided in this application has simple operation steps, does not rely on rigid components, and can achieve both connection strength and sealing performance, making it suitable for large-scale industrial production.

[0059] Example 2

[0060] refer to Figure 2 The difference from Embodiment 1 is that the connecting segment of the first flexible material 2 and the connecting segment of the second flexible material 3 are both protruding block structures 6.

[0061] Specifically, a protruding block structure 6 is provided at the connecting section of the first flexible material 2 and the connecting section of the second flexible material to increase the contact area between the first flexible material 2 or the second flexible material 3 and the rubber connecting part 1, thereby increasing the resistance. This ensures that when the first flexible material 2 or the second flexible material 3 is pulled at both ends, the first flexible material 2 or the second flexible material 3 does not detach from the rubber connecting part 1, thus achieving the connection between the first flexible material 2 and the second flexible material 3. The flexible material connection structure provided in this application can achieve connection without the aid of rigid components, while ensuring both connection and sealing effects, resulting in high connection strength and good sealing performance.

[0062] In one embodiment, the height of the protruding block structure 6 is more than twice the thickness of the first flexible material 2 or the second flexible material 3; the length of the protruding block structure 6 is not less than 1 / 3 of the length of the rubber connector 1.

[0063] Specifically, the height of the protruding block structure 6 can be 2, 3, 4 or 5 times the thickness of the first flexible material 2 or the second flexible material 3.

[0064] This application also provides a method for preparing the above-mentioned flexible material connection structure, including the following steps:

[0065] (1) Determine the first flexible material 2 and the second flexible material 3 that need to be connected, and use thermoplastic pultrusion molding process to make the connecting section of the first flexible material 2 and the connecting section of the second flexible material 3 into a protruding block structure 6;

[0066] (2) The first flexible material 2 connecting segment and the second flexible material 3 connecting segment are placed in a mold, and the injected rubber is added and heated for vulcanization to form a flexible material connecting structure with different flexible materials at both ends and a rubber connecting part 1 in the middle.

[0067] In one implementation method, the temperature of the thermoplastic pultrusion process is 120℃~240℃, the time is 2min~6min, and the pultrusion speed is ≤4.5m / min.

[0068] In one implementation method, the temperature for heating and vulcanization is 120℃~240℃, the time is 2min~6min, and the pressure is 1.0MPa~1.5MPa.

[0069] The method for preparing the flexible material connection structure provided in this application has simple operation steps, does not rely on rigid components, and can achieve both connection strength and sealing performance, making it suitable for large-scale industrial production.

[0070] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0071] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A flexible material connection structure for engineering components, characterized in that, The device comprises an integrally molded first flexible material, a second flexible material, and a rubber connecting part. Both the first and second flexible materials are divided into a connecting section and an extension section. Each connecting section of the first and second flexible materials has several vertical through holes for molten rubber to flow into and solidify, thus achieving a vertically fixed connection with the rubber connecting part. Several wedge-shaped structures are provided along the length of each connecting section to achieve a horizontally fixed connection with the rubber connecting part; alternatively, both the connecting sections of the first and second flexible materials are protruding block structures. The first flexible material is made of polyethylene, TPO, PVC, or TPE; the second flexible material is also made of polyethylene, TPO, PVC, or TPE. The flexible material connection structure for engineering parts is prepared by the following steps: (1) Determine the first flexible material and the second flexible material that need to be connected, open several vertical through holes in the first flexible material connection section and the second flexible material connection section, and use thermoplastic pultrusion molding process to make several wedge-shaped structures in the first flexible material connection section and the second flexible material connection section respectively; or determine the first flexible material and the second flexible material that need to be connected, and use thermoplastic pultrusion molding process to make the first flexible material connection section and the second flexible material connection section into a protruding block structure. (2) Place the first flexible material connecting section and the second flexible material connecting section in a mold, add injection rubber, heat and vulcanize to form a flexible material connecting structure for engineering parts with different flexible materials at both ends and a rubber connecting part in the middle.

2. The flexible material connection structure for engineering parts according to claim 1, characterized in that, The angle between the end of the wedge structure near the first flexible material extension and the first flexible material is 60°~90°; the angle between the end of the wedge structure near the second flexible material extension and the second flexible material is 60°~90°.

3. The flexible material connection structure for engineering parts according to claim 1, characterized in that, The length of the wedge structure is not less than twice the thickness of the first flexible material or the second flexible material.

4. The flexible material connection structure for engineering parts according to claim 1, characterized in that, The ratio of the spacing between adjacent vertical through holes to the diameter of the through hole is 3 to 5:

1.

5. The flexible material connection structure for engineering parts according to claim 1, characterized in that, The height of the protruding block structure is more than twice the thickness of the first or second flexible material; the length of the protruding block structure is not less than 1 / 3 of the length of the rubber connector.

6. The flexible material connection structure for engineering parts according to claim 1, characterized in that, The material of the rubber connector is one of polyisoprene rubber, styrene-butadiene rubber, cis-butadiene rubber, chloroprene rubber, ethylene propylene rubber, or butyl rubber.

7. The flexible material connection structure for engineering parts according to claim 1, characterized in that, The temperature of the thermoplastic pultrusion molding process is 120℃~240℃, the time is 2min~6min, and the pultrusion speed is ≤4.5m / min.

8. The flexible material connection structure for engineering parts according to claim 7, characterized in that, The heating and vulcanization process is carried out at a temperature of 120℃ to 240℃, for a time of 2 min to 6 min, and at a pressure of 1.0 MPa to 1.5 MPa.

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