Strip-shaped rubber sealing element joint reinforcing structure

Abstract

The utility model belongs to the technical field of sealing gaskets, and particularly relates to a reinforcing structure of a long-strip-shaped rubber sealing piece connector. Comprising a rubber strip, a reinforcing piece, an auxiliary exhaust hole, a mold and a vulcanization exhaust hole, the rubber strip is laid on the mold, a reinforcing piece is laid on a connector of the rubber strip, meanwhile, corresponding auxiliary exhaust holes are formed in the reinforcing piece and the rubber strip, and vulcanization exhaust holes are formed in the two sides of the mold. In the practical application, the quality stability of the long-strip-shaped rubber sealing gasket is enhanced through the reinforcing piece, meanwhile, the production technological process is simplified, the rejection rate is reduced, the common problem that the strength of a connector is insufficient in the production process of the long-strip-shaped rubber sealing gasket is effectively solved, the overall quality of a product is remarkably improved, and the service life of the product is remarkably prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing pads, and in particular relates to a joint reinforcement structure of an elongated rubber sealing piece. Background Art

[0002] In the production of rubber products, long, strip-shaped gaskets are widely used due to their simple structure and relatively low production requirements. These gaskets are typically manufactured using a flat-plate vulcanizing press and are suitable for a variety of industrial applications, including automotive, construction, and household appliances. However, a common problem with long strip-shaped gaskets in actual production and use is the quality of their joints. Due to the limited width of the open mill and the long overall length required for long strip-shaped gaskets, joints inevitably form in the raw rubber strip during the molding process. These joints are significantly weaker than the overall strength after vulcanization, leading to cracking during use and severely impacting the gasket's service life and performance. Traditional solutions include improving the rubber compound formula to enhance adhesion or increasing the vulcanization time to strengthen the joint area. However, these methods are not ideal and may lead to other problems, such as increased cost and process complexity. Additionally, some manufacturers have attempted to strengthen the joints by manually patching them, but this is not only inefficient but also difficult to ensure consistent quality.

[0003] Chinese patent publication number CN210531597U discloses a cloth-based gasket comprising a cloth-based gasket body and a silicone sleeve; the silicone sleeve wraps the cloth-based gasket body; the cloth-based gasket body and the silicone sleeve are provided with a plurality of bolt holes; the cloth-based gasket body comprises an elastic layer, a nylon cloth layer, an adhesive layer, and a metal mesh layer; the nylon cloth layer is bonded to the metal mesh layer via the adhesive layer; there are two elastic layers, one on the upper side of the nylon cloth layer and the other on the lower side of the metal mesh. The above device is unable to expel the air during vulcanization, and gas retention may cause scarring at the joints, which may easily lead to cracking at the joints of the finished product. Therefore, it is urgent for those skilled in the art to solve the above technical problems. Utility Model Content

[0004] The technical problem to be solved by the present invention is that the above-mentioned prior art cannot discharge the air during vulcanization, and the gas retention may cause scars at the joints and easily cause cracks at the joints of the finished product.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A long strip rubber seal joint reinforcement structure includes a rubber strip, a reinforcement piece, an auxiliary venting hole mold and a vulcanization venting hole; the rubber strip is laid on the mold, and a reinforcement piece is provided on the joint of the rubber strip. At the same time, corresponding auxiliary venting holes are opened on the reinforcement piece and the rubber strip, and vulcanization venting holes are opened on both sides of the mold.

[0007] By adopting the above technical solution, a reinforcement is provided on the joint of the rubber strip, which can significantly increase the physical strength of the joint. The reinforcement has good air permeability and high strength, can effectively disperse stress, and prevent the joint from cracking due to uneven force. Corresponding auxiliary exhaust holes are opened on the reinforcement and the rubber strip. These small holes help to discharge excess gas during the vulcanization process, avoiding the formation of internal bubbles caused by gas accumulation, thereby reducing defects in the finished product. Vulcanization exhaust holes are added on both sides of the mold to further promote the discharge of excess gas during the vulcanization process, ensuring the uniformity and integrity of the vulcanization process. By optimizing the exhaust design, surface defects such as scars and bubbles caused by gas retention are reduced, making the surface of the product smoother and flatter, enhancing the strength and adhesion of the joint, and reducing cracking during use, thereby significantly extending the overall service life of the seal.

[0008] Furthermore, the reinforcing piece is wrapped with nylon mesh cloth, the joint is sleeved in the reinforcing piece, and the reinforcing piece completely covers the joint.

[0009] By adopting the above technical solution, the nylon mesh wrapping has high tensile and tear strength, effectively resisting external pressure and stretching forces. Enclosing the joint in the nylon mesh wrapping significantly improves the mechanical properties of the joint and prevents cracking caused by uneven stress. The mesh structure of the nylon mesh wrapping helps evenly distribute stress in the joint, reducing local stress concentration, thereby further improving the overall strength of the joint. The nylon mesh wrapping has excellent air permeability, allowing gases generated during the vulcanization process to escape through its mesh structure. This reduces the possibility of gas entrapment, avoids the formation of bubbles and scars, and ensures a smooth and flat joint. The good air permeability also prevents gas accumulation in the joint during vulcanization, reducing the occurrence of internal defects and improving the quality of the finished product. The nylon mesh wrapping completely covers the joint, providing all-round protection. This full coverage design not only enhances the physical strength of the joint but also provides an additional layer of protection against external environmental influences. The full coverage of the nylon mesh wrapping ensures a more uniform bond between the joint and the adhesive strip, reducing the risk of cracking due to poor adhesion.

[0010] Furthermore, a tackifier is applied to the connection of the joint.

[0011] By adopting the above technical solution, the tackifier can significantly improve the bonding strength at the joints of the rubber strips. By increasing the adhesion between the two parts of the rubber, the risk of cracking due to poor adhesion is reduced. Applying the tackifier can make the rubber more evenly distributed at the joint, ensuring good adhesion throughout the joint area, thereby enhancing the overall mechanical strength. The tackifier helps improve the interfacial bonding between the rubber and the rubber at the joint, forming a stronger chemical or physical bond, thereby improving the overall stability and durability of the joint. By strengthening the interfacial bonding, the delamination phenomenon that may occur at the joint during use is reduced, further improving the reliability of the product. The adhesive not only increases the bonding strength of the joint, but also improves its sealing performance. This enables the seal to better prevent the leakage of liquids or gases in actual applications, ensuring the integrity of its function.

[0012] Furthermore, six pairs of auxiliary exhaust holes are provided at the overlapping portion of the rubber strip and the joint.

[0013] By adopting the above technical solution, setting up 6 pairs of exhaust holes can ensure that gas is discharged evenly from multiple positions, avoiding local pressure concentration and gas accumulation caused by a single exhaust hole. The auxiliary exhaust holes help to eliminate surface defects caused by gas retention, such as bubbles, scars and depressions, making the surface of the finished product smoother and flatter. After reducing surface defects, the appearance quality of the seal is improved, which is more in line with high-standard application requirements. Through uniform exhaust, local stress concentration caused by gas accumulation is reduced, thereby reducing the risk of cracking at the joint. The auxiliary exhaust holes can also help the tackifier to penetrate and distribute better, further enhancing the bonding performance of the joint. The operation of opening exhaust holes at the overlap of the strip and the joint is relatively simple and can be quickly implemented on the existing production line without the need for complex equipment or process adjustments. By reducing the scrap rate caused by gas retention, production efficiency is improved, production costs are reduced, and internal defects at the joint are reduced, making the seal more durable during use and extending the overall service life of the product.

[0014] Furthermore, the vulcanization exhaust holes are located on both sides of the rubber strip, and a total of 7 pairs of vulcanization exhaust holes are provided.

[0015] By adopting this technical solution, multiple pairs of seven vulcanization vents are placed on both sides of the strip, ensuring that gas is evenly exhausted from multiple locations, covering the entire vulcanization area. This more effectively guides excess gas from the interior and surface, reducing the formation of bubbles and scars. During the vulcanization process, if excess gas is not exhausted in a timely manner, it will form air pockets in the finished product, resulting in surface defects. By setting up multiple pairs of exhaust holes, the phenomenon of gas trapping can be minimized and the overall quality of the product can be improved. Through effective exhaust, surface defects such as bubbles, scars and depressions caused by gas retention are reduced, making the surface of the finished product smoother and flatter. After reducing surface defects, the appearance quality of the seal is improved, which is more in line with high-standard application requirements and enhances the market competitiveness of the product. The uniform exhaust design reduces local stress concentration caused by gas accumulation, thereby reducing the risk of cracking at the joint. Auxiliary exhaust holes can help the tackifier to penetrate and distribute better, further enhance the bonding performance of the joint, and improve the overall strength and durability of the joint. The operation of opening vulcanization exhaust holes on the mold is relatively simple and can be quickly implemented on the existing production line without the need for complex equipment or process adjustments. By reducing the scrap rate caused by gas retention, production efficiency is improved, production costs are reduced, and internal defects at the joint are reduced, making the seal more durable during use and extending the overall service life of the product.

[0016] The utility model has the following beneficial effects:

[0017] 1. This utility model uses a nylon mesh as a reinforcement at the joint. The nylon mesh has high strength and good air permeability, effectively dispersing stress and preventing cracking at the joint due to uneven stress. A tackifier is applied to the joint connection to improve the adhesion between the rubber strips, ensuring a tight connection between the joint and the overall part, reducing the risk of cracking. The dual effects of the reinforcement and tackifier significantly enhance the physical strength and durability of the joint, extending the overall service life of the seal.

[0018] 2. This utility model provides six pairs of auxiliary exhaust holes at the intersection of the rubber strip and the joint. These holes help to discharge excess gas during the vulcanization process, reducing the formation of internal bubbles and surface scars, making the finished product surface smoother and flatter. Seven pairs of vulcanization exhaust holes are provided on both sides of the mold to further promote the discharge of excess gas during the vulcanization process, ensuring the uniformity and integrity of the vulcanization process. By optimizing the exhaust design, surface defects caused by gas stagnation are reduced, the surface quality and overall appearance of the product are improved, and the product's market competitiveness is enhanced.

[0019] 3. The design of the reinforcement and vent holes of the utility model is simple and easy, and can be quickly implemented on the existing production line without the need for complicated equipment or process adjustments. By enhancing the joint strength and optimizing the venting design, the scrap rate caused by joint cracking and surface defects is reduced, the qualified rate is improved, rework and scrap are reduced, production efficiency is improved, production costs are reduced, and greater economic benefits are brought to the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a top view of the rubber strip and mold of the utility model;

[0021] Figure 2 This is a schematic diagram of the assembly of the rubber strip and the reinforcing member of the present invention;

[0022] Figure 3 It is a schematic diagram of the tackifier application area of ​​this utility model.

[0023] Among them, 1- rubber strip; 11- joint; 2- reinforcement; 3- auxiliary vent; 4- mold; 41- vulcanization vent. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific preferred embodiments.

[0025] In the description of the present invention, it should be understood that the terms "left side," "right side," "upper," "lower," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Terms such as "first" and "second" do not indicate the importance of a component and therefore should not be construed as limiting the present invention. The specific dimensions used in this embodiment are merely for illustrative purposes and do not limit the scope of protection of the present invention.

[0026] like Figure 1 、 Figure 2 and Figure 3 , as shown, a long strip rubber seal joint reinforcement structure, the joint 11 of the rubber strip 1 is sleeved in the reinforcement 2, the reinforcement 2 is made of nylon mesh cloth, a tackifier is applied to the joint 11, and the two ends of the joint 11 are preliminarily connected. After the reinforcement 2 is installed, six pairs of auxiliary exhaust holes 3 are opened on the rubber strip 1 and the reinforcement 2. The rubber strip 1 is laid on the mold 4, and seven pairs of vulcanization exhaust holes 41 are opened on both sides of the mold 4;

[0027] Lay the rubber strip 1 on the mold 4, ensuring it is flat and free of twist. Apply a layer of tackifier to the joint 11 of the rubber strip 1, ensuring that the tackifier evenly covers the entire joint area. The tackifier strengthens the adhesion between the two rubber components and reduces the risk of cracking. Initially connect the two ends of the joint 11, ensuring that the joint is correctly positioned and fits snugly. Wrap the nylon mesh reinforcement 2 around the joint 11, ensuring that it completely covers the joint 11 and fits snugly against the rubber strip 1. The nylon mesh, with its high strength and good air permeability, further strengthens the joint and facilitates gas evacuation. Six pairs of auxiliary vent holes 3 are provided on the reinforcement 2 and the rubber strip 1. These vent holes should be evenly distributed around the joint 11 and the surrounding area to ensure the smooth escape of excess gas during the vulcanization process. The specific position of the auxiliary exhaust holes 3 can be adjusted according to actual needs, but it should be ensured that each exhaust hole can play an effective role. The laid rubber strip 1 and the joint 11 wrapped with the reinforcement 2 are placed in the mold 4 to ensure that the rubber strip 1 and the joint 11 are in the correct position without offset or distortion. Confirm that the 7 pairs of vulcanization exhaust holes 5 on both sides of the mold 4 are in an open state so that the gas can be discharged through these holes during the vulcanization process. The mold 4 with the rubber strip 1 and the joint 11 is sent to the flat vulcanizer for vulcanization. During the vulcanization process, excess gas will be discharged through the auxiliary exhaust holes 3 and the vulcanization exhaust holes 5 to avoid the formation of bubbles and scars. The vulcanization time and temperature are controlled to ensure that the rubber strip 1 is fully vulcanized and achieves the required strength and performance. After the vulcanization is completed, the finished product is taken out for appearance inspection and performance testing to ensure that there are no cracks at the joint 11, the surface is smooth and flat, and it meets the quality standards.

[0028] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all fall within the scope of protection of the present invention.

Claims

1. A long strip rubber seal joint reinforcement structure, characterized by: The invention comprises a rubber strip (1), a reinforcing piece (2), an auxiliary vent (3), a mold (4) and a vulcanization vent (41); the rubber strip (1) is laid on the mold (4); a reinforcing piece (2) is provided on a joint (11) of the rubber strip (1); corresponding auxiliary vents (3) are provided on the reinforcing piece (2) and the rubber strip (1); and vulcanization vents (41) are provided on both sides of the mold (4).

2. The elongated rubber seal joint reinforcement structure according to claim 1, characterized in that: The reinforcing piece (2) is made of nylon mesh cloth, the joint (11) is sleeved in the reinforcing piece (2), and the reinforcing piece (2) completely covers the joint (11).

3. The elongated rubber seal joint reinforcement structure according to claim 1, characterized in that: The connection of the joint (11) is also coated with a tackifier.

4. The elongated rubber seal joint reinforcement structure according to claim 2, characterized in that: Six pairs of auxiliary exhaust holes (3) are provided at the overlapping portion between the rubber strip (1) and the joint (11).

5. The elongated rubber seal joint reinforcement structure according to claim 1, characterized in that: The vulcanization exhaust holes (41) are located on both sides of the rubber strip (1), and a total of 7 pairs of vulcanization exhaust holes (41) are provided.

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