High-temperature-resistant silica gel synchronous belt

Abstract

The utility model relates to synchronous belt technical field especially is a kind of high-temperature-resistant silica gel synchronous belt, including synchronous belt main body, the synchronous belt main body includes bottom band, the outside of the bottom band is integrally injection molded with back layer, and the outside of the bottom band is provided with several anchor fastenings, the injection molding combination intensity of the bottom band and back layer is enhanced by the anchor fastening of its outside surface, the utility model is integrally injection molded composite structure by using the bottom band of high-temperature-resistant TPEE material and the back layer of silica gel material, effectively solve the technical problem that traditional single material synchronous belt high-temperature-resistant performance is insufficient and mechanical strength is difficult to take into account, realizes the long-term reliable operation of synchronous belt in above 200 DEG C high-temperature environment.

Description

Technical Field

[0001] This utility model relates to the field of synchronous belt technology, specifically a high-temperature resistant silicone synchronous belt. Background Technology

[0002] Synchronous belts, as a high-precision power transmission component, are widely used in automobiles, machinery manufacturing, electronic equipment and other fields. They achieve zero-slip transmission through the meshing of belt teeth and pulleys, and have advantages such as high transmission efficiency, low noise and low maintenance costs. With the improvement of industrial automation, high-temperature environments have placed higher demands on the high-temperature resistance, mechanical strength and structural stability of synchronous belts.

[0003] Traditional synchronous belts, due to material and structural limitations, struggle to meet the long-term reliable operation requirements under extreme conditions. Current technologies often employ single-material preparation, such as neoprene rubber synchronous belts, which possess good wear resistance, oil resistance, and moderate mechanical strength. Their long-term operating temperature range is typically -30℃ to 80℃, with a short-term maximum tolerance temperature not exceeding 100℃. However, in high-temperature environments, the neoprene rubber molecular chains are prone to thermal oxidation and breakage, leading to material hardening, decreased elasticity, cracks in the belt body, or tooth loss. This drastically reduces transmission accuracy and shortens service life. Silicone synchronous belts, through formulations such as low-phenyl silicone rubber, can achieve high-temperature resistance up to approximately 230℃. However, silicone material has low mechanical strength and poor tear resistance, making it susceptible to powdering and cracking under long-term dynamic loads.

[0004] Therefore, a high-temperature resistant silicone timing belt is needed to improve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a high-temperature resistant silicone synchronous belt to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A high-temperature resistant silicone synchronous belt includes a synchronous belt body, the synchronous belt body including a bottom belt, the outer side of the bottom belt being integrally injection molded with a back layer, and a plurality of anchoring members being provided on the outer side of the bottom belt, the bottom belt enhancing the injection molding bond strength with the back layer through the anchoring members on its outer side.

[0007] As a preferred embodiment of this utility model, the anchoring member is a barbed protrusion, and the anchoring member and the base strip are integrally injection molded.

[0008] As a preferred embodiment of this utility model, the base strip is made of high-temperature resistant TPEE material.

[0009] As a preferred embodiment of this utility model, the back layer is integrally injection molded from silicone material, forming an anchor with the anchoring component.

[0010] As a preferred embodiment of this utility model, the outer side of the back layer is provided with several grooves.

[0011] As a preferred embodiment of this utility model, a reinforcing layer is provided between the bonding surfaces of the bottom strip and the back layer.

[0012] As a preferred embodiment of this utility model, the reinforcing layer is made of a mesh fabric woven from glass fiber or aramid fiber.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model effectively solves the technical problem of insufficient high-temperature resistance and difficulty in balancing mechanical strength of traditional single-material synchronous belts by adopting an integrated injection molding composite structure of a high-temperature resistant TPEE base belt and a silicone back layer, thus achieving long-term reliable operation of synchronous belts in high-temperature environments above 200℃. This invention solves the problem of high-temperature delamination caused by weak interfacial bonding in traditional multi-layer composite synchronous belts by setting barbed anchors and a glass fiber mesh reinforcement layer at the interface between the bottom belt and the back layer, forming a dual bonding mechanism of physical anchoring and chemical bonding. The interlayer peel strength is effectively improved, the shear resistance is significantly enhanced, and there is no cracking or detachment between layers after high-temperature aging, resulting in a significant improvement in structural stability. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional schematic diagram of the present invention; Figure 3 This utility model Figure 2 Enlarged view of point A in the middle.

[0015] In the diagram: 1. Bottom strip; 2. Back layer; 3. Groove; 4. Anchor; 5. Reinforcing layer. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0017] To facilitate understanding of this utility model, a more comprehensive description of it will be provided below with reference to relevant embodiments. Several embodiments of this utility model are given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0018] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] Please see Figure 1-3 This utility model provides a technical solution: For an example, please refer to... Figure 1 , 2 3. A high-temperature resistant silicone synchronous belt, comprising a synchronous belt body, the synchronous belt body comprising a bottom belt 1, the outer side of the bottom belt 1 being integrally injection molded with a back layer 2, and the outer side of the bottom belt 1 being provided with a plurality of anchoring elements 4, the bottom belt 1 being enhanced with the injection molding bonding strength with the back layer 2 by the anchoring elements 4 on its outer side.

[0021] The bottom belt 1, as the basic load-bearing layer of the synchronous belt, is injection molded from high-temperature resistant TPEE material. Its long-term operating temperature range is -40℃ to 150℃. The back layer 2 is a high-temperature resistant functional layer, which is made of silicone material and coated on the outside of the bottom belt 1 through an integrated injection molding process. Its high-temperature resistance reaches 230℃, and it has both flexibility and aging resistance. It can directly contact high-temperature environments and reduce the transfer of heat to the bottom belt 1.

[0022] Please refer to Figure 1 , 2 And 3, the anchoring part 4 is a barbed protrusion, and the anchoring part 4 and the bottom strip 1 are integrally injection molded.

[0023] Anchor 4 is a barbed protrusion integrally injection molded with the base strip 1, and is evenly distributed along the width direction of the base strip 1. During the integral injection molding process, molten silicone fills the gaps between the anchor 4. After cooling and solidification, the barbed protrusion and the silicone form a mechanical interlocking structure. Combined with the diffusion of interfacial molecules between TPEE and silicone at the injection temperature, a dual combination of physical anchoring and chemical adhesion is achieved, which improves the interlayer peel strength and effectively suppresses delamination caused by thermal expansion differences at high temperatures.

[0024] Please refer to Figure 1 , 2 3. The bottom strip 1 is made of high temperature resistant TPEE material, and the back layer 2 is made of silicone material through integrated injection molding, forming an anchor with the anchoring part 4. Several grooves 3 are provided on the outer side of the back layer 2.

[0025] The groove 3 is a strip-shaped groove opened on the outer surface of the back layer 2 along the length of the strip. Under high temperature environment, the back layer 2 is prone to bulging or deformation due to thermal expansion. The groove 3 can provide a buffer space to reduce the risk of surface cracking. Meanwhile, the groove 3 increases the contact area between the back layer 2 and the air, improving heat dissipation efficiency and reducing the operating temperature of the belt. In addition, the groove 3 can reduce the contact area between the back layer 2 and the guide wheel in the transmission mechanism, thereby reducing frictional heat and noise.

[0026] A reinforcing layer 5 is provided between the bonding surfaces of the bottom strip 1 and the back layer 2. The reinforcing layer 5 is made of a mesh fabric woven from glass fiber or aramid fiber.

[0027] The reinforcing layer 5 is made of plain weave mesh fabric woven from E-type glass fiber or aramid fiber. After being surface treated with silane coupling agent, it is embedded in the bonding surface between the bottom strip 1 and the back layer 2. Its edges are staggered with the anchors 4 of the bottom strip 1. The high temperature resistance of the glass fiber mesh fabric can improve the overall heat resistance of the bonding surface. At the same time, the mesh structure allows the silicone melt to penetrate and together with the anchors 4, form a three-dimensional reinforcing network, which improves the interlayer shear strength and avoids interlayer slippage during dynamic transmission. In addition, the mesh fabric can disperse local stress and reduce the concentration of internal stress caused by the difference in thermal expansion coefficients between the bottom strip 1 and the back layer 2.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-temperature resistant silicone synchronous belt, characterized in that: The system includes a synchronous belt body, which includes a bottom belt (1). The bottom belt (1) has an integral injection-molded back layer (2) on its outer side, and a number of anchoring elements (4) are provided on the outer side of the bottom belt (1). The bottom belt (1) enhances the injection molding bond strength with the back layer (2) through the anchoring elements (4) on its outer side.

2. The high-temperature resistant silicone synchronous belt according to claim 1, characterized in that: The anchoring member (4) is a barbed protrusion, and the anchoring member (4) and the base strip (1) are integrally injection molded.

3. The high-temperature resistant silicone synchronous belt according to claim 2, characterized in that: The base strip (1) is made of high-temperature resistant TPEE material.

4. The high-temperature resistant silicone synchronous belt according to claim 3, characterized in that: The back layer (2) is integrally injection molded with silicone material, and is anchored to the anchor (4).

5. The high-temperature resistant silicone synchronous belt according to claim 4, characterized in that: The outer side of the back layer (2) is provided with several grooves (3).

6. The high-temperature resistant silicone synchronous belt according to any one of claims 1-5, characterized in that: A reinforcing layer (5) is provided between the bonding surfaces of the bottom strip (1) and the back layer (2).

7. The high-temperature resistant silicone synchronous belt according to claim 6, characterized in that: The reinforcing layer (5) is made of a mesh fabric woven from glass fiber or aramid fiber.

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