Annular synchronous belt for OCV valve automatic assembly test line

Abstract

The utility model discloses an annular synchronous belt for an OCV valve automatic assembly test line, and belongs to the technical field of annular synchronous belts, the annular synchronous belt comprises a belt body, a tooth block is arranged on the inner side of the belt body, the belt body comprises a polyurethane base material layer, a tooth surface wear-resistant layer covering the tooth block is arranged on the inner side of the polyurethane base material layer, and the tooth surface wear-resistant layer is arranged on the outer side of the belt body. A buffer layer is arranged between the polyurethane base material layer and the tooth surface wear-resistant layer, the polyurethane base material layer and the tooth surface wear-resistant layer are bonded through the buffer layer, an anti-bending fatigue layer is arranged in the polyurethane base material layer, a tensile layer is arranged on the outer side of the polyurethane base material layer, and a belt back protection layer is arranged on the outer side of the tensile layer. Through the arrangement of the tooth surface wear-resistant layer, tooth surface wear can be reduced, the precision of the tooth blocks can be maintained, through the arrangement of the buffer layer, impact load and stress concentration during meshing of the tooth blocks can be absorbed, impact borne by the synchronous belt is relieved, and the service life is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of annular synchronous belt technology, specifically relating to an annular synchronous belt used in an automatic assembly and testing line for OCV valves. Background Technology

[0002] The OCV valve is an oil control valve, a precision component of the engine. The OCV valve automated assembly and testing line is a fully automated production line for the assembly and testing of VVT (OCV valves), primarily used for the assembly and inspection of automotive engine parts. This production line consists of multiple workstations, including a pole shoe assembly workstation, a valve sleeve filter welding workstation, a sealing workstation, and an airtightness testing station, enabling automated operations such as material loading, pressing, data collection, and data output for each component.

[0003] The performance requirements of the timing belt in the automatic assembly and testing line of OCV valve are certainly very high. The ring timing belt of the existing automatic assembly and testing line of OCV valve usually uses conventional polyurethane power timing belt, which has poor wear resistance. The long-term meshing and impact of the tooth surface can easily lead to wear and deformation of the timing belt, affecting the meshing accuracy and shortening the service life. Utility Model Content

[0004] The purpose of this invention is to provide a ring-shaped synchronous belt for an automatic assembly and testing line of OCV valves, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a ring-shaped synchronous belt for an automatic assembly and testing line of an OCV valve, comprising a belt body, toothed blocks disposed on the inner side of the belt body, the belt body comprising a polyurethane substrate layer, a wear-resistant layer covering the toothed blocks disposed on the inner side of the polyurethane substrate layer, a buffer layer disposed between the polyurethane substrate layer and the wear-resistant layer, the polyurethane substrate layer and the wear-resistant layer being bonded together by the buffer layer, a bending fatigue-resistant layer disposed inside the polyurethane substrate layer, a tensile-resistant layer disposed outside the polyurethane substrate layer, and a backing protective layer disposed outside the tensile-resistant layer.

[0006] In a preferred embodiment, the wear-resistant layer on the tooth surface is hydrogenated nitrile rubber.

[0007] In a preferred embodiment, the buffer layer is a flexible adhesive.

[0008] In a preferred embodiment, the flexural fatigue-resistant layer is a highly flexible aramid fiber woven layer.

[0009] In a preferred embodiment, the tensile layer is an ultra-high modulus polyaramid fiber woven layer.

[0010] In a preferred embodiment, the backing protective layer is chloroprene rubber.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The OCV valve automatic assembly and testing line uses a ring-shaped synchronous belt. With the addition of a wear-resistant layer on the tooth surface, the wear-resistant layer can directly mesh with the pulley teeth when the tooth blocks are engaged, bearing friction, impact and shear force. Hydrogenated nitrile rubber has ultra-high wear resistance, which can reduce tooth surface wear and maintain the accuracy of the tooth blocks. With the addition of a buffer layer, it can absorb the impact load and stress concentration when the tooth blocks are engaged, reduce the impact on the synchronous belt, and extend its service life.

[0013] The OCV valve automatic assembly and testing line uses a ring-shaped synchronous belt. Through the addition of an anti-bending fatigue layer, it can withstand repeated bending stress when the synchronous belt winds into or out of the pulley, improving its resistance to bending fatigue and further dispersing stress. The addition of a tensile layer allows it to withstand the tension of the synchronous belt during operation, ensuring long-term dimensional stability, maintaining precise synchronization, and enhancing fatigue resistance and resistance to cyclic loads. The addition of a backing protective layer protects the back of the synchronous belt from environmental corrosion (oil, dust, mechanical damage), improving its anti-aging ability and extending its service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 3 This utility model Figure 2 Enlarged view of the cross-sectional structure at point A in the middle.

[0017] In the figure: 1. Belt body; 11. Tooth block; 12. Polyurethane substrate layer; 13. Tooth surface wear-resistant layer; 14. Buffer layer; 15. Bending fatigue layer; 16. Tensile layer; 17. Belt back protective layer. Detailed Implementation

[0018] The present invention will be further described below with reference to the embodiments.

[0019] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0020] Please see Figure 1-3This utility model provides an annular synchronous belt for an automatic assembly and testing line of OCV valves, including a belt body 1, with toothed blocks 11 disposed on the inner side of the belt body 1, and the belt body 1 including a polyurethane substrate layer 12. A wear-resistant layer 13 covering the tooth surface of the toothed blocks 11 is disposed on the inner side of the polyurethane substrate layer 12. The wear-resistant layer 13 is made of hydrogenated nitrile rubber. Through the provision of the wear-resistant layer 13, when the toothed blocks 11 are engaged, the wear-resistant layer 13 can directly mesh with the pulley teeth, bearing friction, impact, and shear force. Nitrile rubber has extremely high wear resistance, which can reduce tooth surface wear and maintain the accuracy of tooth block 11. A buffer layer 14 is provided between the polyurethane substrate layer 12 and the tooth surface wear-resistant layer 13. The buffer layer 14 is a flexible adhesive, which can be modified chloroprene rubber or a special adhesive. The polyurethane substrate layer 12 and the tooth surface wear-resistant layer 13 are bonded together through the buffer layer 14. The buffer layer 14 can absorb the impact load and stress concentration when the tooth block 11 meshes, and reduce the impact on the synchronous belt.

[0021] Furthermore, an anti-bending fatigue layer 15 is provided inside the polyurethane substrate layer 12. The anti-bending fatigue layer 15 is a high-flexibility aramid fiber braided layer. The anti-bending fatigue layer 15 can withstand the repeated bending stress when the synchronous belt winds into or out of the pulley, improving the bending fatigue resistance of the synchronous belt, further dispersing stress, and extending its service life. A tensile layer 16 is provided on the outside of the polyurethane substrate layer 12. The tensile layer 16 is an ultra-high modulus polyaramid fiber braided layer. The tensile layer 16 can withstand the tension of the synchronous belt during operation, ensuring long-term dimensional stability, maintaining precise synchronization, enhancing fatigue resistance, resisting cyclic loads, and extending its service life. A belt backing protective layer 17 is provided on the outside of the tensile layer 16. The belt backing protective layer 17 is made of neoprene rubber. The belt backing protective layer 17 protects the back of the synchronous belt, preventing environmental corrosion (oil, dust, mechanical damage), improving aging resistance, and extending its service life.

[0022] The working principle and usage process of this utility model are as follows: First, through the setting of the wear-resistant layer 13 on the tooth surface, when the tooth block 11 is engaged, the wear-resistant layer 13 on the tooth surface can directly mesh with the pulley teeth, and withstand friction, impact and shear force. Hydrogenated nitrile rubber has ultra-high wear resistance, which can reduce tooth surface wear and maintain the accuracy of the tooth block 11. Through the setting of the buffer layer 14, the impact load and stress concentration during the engagement of the tooth block 11 can be absorbed, and the impact on the synchronous belt can be reduced. Through the setting of the anti-bending fatigue layer 15, the synchronous belt can withstand the repeated bending stress when it is wound into or out of the pulley, improve the anti-bending fatigue performance of the synchronous belt, and further disperse the stress. Through the setting of the tensile layer 16, the synchronous belt can withstand the tension during operation, ensure the dimensional stability of long-term operation, maintain accurate synchronization, and enhance fatigue resistance and resist cyclic load. Through the setting of the belt back protection layer 17, the belt back of the synchronous belt can be protected, so that the synchronous belt is not corroded by the environment (oil, dust, mechanical damage), improves anti-aging ability, and extends service life.

[0023] 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 ring-shaped synchronous belt for an automatic assembly and testing line of an OCV valve, comprising a belt body (1), characterized in that: The inner side of the belt body (1) is provided with tooth blocks (11). The belt body (1) includes a polyurethane substrate layer (12). The inner side of the polyurethane substrate layer (12) is provided with a tooth surface wear-resistant layer (13) covering the tooth blocks (11). A buffer layer (14) is provided between the polyurethane substrate layer (12) and the tooth surface wear-resistant layer (13). The polyurethane substrate layer (12) and the tooth surface wear-resistant layer (13) are bonded together by the buffer layer (14). The interior of the polyurethane substrate layer (12) is provided with a bending fatigue-resistant layer (15). The exterior of the polyurethane substrate layer (12) is provided with a tensile layer (16). The exterior of the tensile layer (16) is provided with a belt back protective layer (17).

2. The annular synchronous belt for an automatic assembly and testing line of an OCV valve according to claim 1, characterized in that: The wear-resistant layer (13) on the tooth surface is hydrogenated nitrile rubber.

3. The annular synchronous belt for an automatic assembly and testing line of an OCV valve according to claim 1, characterized in that: The buffer layer (14) is a flexible adhesive.

4. The annular synchronous belt for an automatic assembly and testing line of an OCV valve according to claim 1, characterized in that: The bending fatigue resistance layer (15) is a highly flexible aramid fiber braided layer.

5. The annular synchronous belt for an automatic assembly and testing line of an OCV valve according to claim 1, characterized in that: The tensile layer (16) is an ultra-high modulus polyaramid fiber woven layer.

6. The annular synchronous belt for an automatic assembly and testing line of an OCV valve according to claim 1, characterized in that: The backing protective layer (17) is made of chloroprene rubber.

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