High-strength insulating synchronous belt

Abstract

The utility model discloses a high-strength insulating synchronous belt, which is applied to vacuum coating equipment and is characterized by comprising a back canvas layer, a front canvas layer and a rear canvas layer, the tooth canvas layer and the back canvas layer are arranged in a stacked mode in the first direction, and the tooth canvas layer is outwards provided with a plurality of meshing tooth parts in a protruding mode; the rubber layer is positioned between the back canvas layer and the tooth canvas layer; the K-shaped glass cord layer is embedded in the rubber layer and extends in the transmission direction of the synchronous belt, and the K-shaped glass cord layer comprises a plurality of K-shaped glass cords and a first glue layer formed on the surfaces of the K-shaped glass cords through a glue dipping process; and the protective layer wraps the outer side wall of each K-shaped glass cord. The synchronous belt at least has the following advantages that the K-shaped glass cord layer is selected to be combined with other structures, so that the synchronous belt has the characteristics of high strength, good flexibility and high tensile resistance.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission, and particularly relates to a high-strength insulating synchronous belt. Background Art

[0002] As one of the indispensable products in the transmission system, the synchronous belt has a very wide range of applications. The synchronous belt is also called a toothed belt, a timing belt, etc., and belongs to the meshing type transmission. Compared with transmission methods such as chains and gears, it has the advantages of light weight, simple structure, no need for lubrication, low noise, etc. It is applied in industrial fields such as automobiles and office automation.

[0003] With the technological upgrading of various industries, the requirements for synchronous belts are becoming more and more stringent. Taking vacuum coating equipment as an example, the synchronous belt is required to be insulated at some structures and needs to bear high torque. Existing synchronous belts mostly use Kevlar wire ropes or ordinary glass wire ropes as the component structures of the synchronous belt. In this way, early tooth shear or synchronous belt fracture failure will occur; high-strength synchronous belts mostly use carbon fiber wire ropes to provide tensile strength, and carbon fiber wire ropes and carbon fiber / glass wire rope hybrid wire ropes cannot meet the insulation requirements of vacuum coating equipment. Therefore, it is urgent to design a synchronous belt with high strength, good flexibility and high tensile resistance. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a high-strength insulating synchronous belt, which selects a K-type glass wire rope layer combined with other structures, so that the synchronous belt has the characteristics of high strength, good flexibility and high tensile resistance.

[0005] The utility model is realized through the following technical solutions:

[0006] A high-strength insulating synchronous belt is applied to a vacuum coating equipment. The synchronous belt includes:

[0007] A back canvas layer;

[0008] A tooth canvas layer, which is laminated with the back canvas layer along a first direction, and the tooth canvas layer is convexly provided with a plurality of meshing tooth parts outward;

[0009] A rubber layer, which is located between the back canvas layer and the tooth canvas layer;

[0010] A K-type glass wire rope layer, which is buried in the rubber layer and extends along the transmission direction of the synchronous belt. The K-type glass wire rope layer includes a plurality of K-type glass wire ropes and a first glue layer formed on the surface of the K-type glass wire ropes through an impregnation process;

[0011] A protective layer, which is wrapped on the outer side wall of each K-type glass wire rope.

[0012] Further, the rubber layer includes fibers, and the length range of the fibers is between 1 and 6 mm.

[0013] Further, the canvas layer of the tooth part includes a base fabric layer and a wear-resistant layer, and the base fabric layer is disposed on the surface of the rubber layer.

[0014] Further, the base fabric layer is made of nylon ropes, and the base fabric layer is formed with a second rubber layer through a rubber dipping process.

[0015] Further, the wear-resistant layer is made of polytetrafluoroethylene.

[0016] Further, a plurality of the meshing tooth parts are arranged at intervals and equidistantly along the transmission direction of the synchronous belt.

[0017] Further, a tooth groove is formed between two adjacent meshing tooth parts, the meshing tooth part is an arc tooth, and the pitch of the arc tooth is between 7.9 and 8.1 mm.

[0018] Compared with the prior art, the advantages of the present utility model are as follows:

[0019] 1. By introducing the K-type glass cord layer, which has the property of high tensile strength by itself and is superior to the prior art, and in combination with the rubber dipping process and other structures, the synchronous belt has the characteristics of high strength, good flexibility, and high tensile resistance.

[0020] 2. Utilizing the rubber layer, the rubber layer is the main structure of the synchronous belt, formed by mixing hydrogenated nitrile and fibers, which can effectively strengthen the strength, and the hardness can reach 85 ShA. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0022] Figure 2 is a partial structural cross-sectional view of the K-type glass cord layer in an embodiment of the present utility model;

[0023] Reference numerals: 1, back canvas layer; 2, canvas layer of tooth part; 3, rubber layer; 4, K-type glass cord layer; 5, protective layer; 6, meshing tooth part; 7, tooth groove; 41, K-type glass cord; 42, first rubber layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The technical solution of the utility model will be further described in detail and non - restrictively below in conjunction with the preferred embodiments and their accompanying drawings. In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as a limitation of the present utility model.

[0025] As Figure 1 and Figure 2 shown, in the embodiments of the present application, a high - strength insulating synchronous belt is disclosed. This high - strength insulating synchronous belt is mainly applied in vacuum coating equipment to meet the requirements of high torque and insulation during the use of vacuum coating equipment.

[0026] Specifically, the synchronous belt mainly includes a back canvas layer, a tooth canvas layer, a rubber layer, a K - type fiberglass cord layer, and a protective layer. The back canvas layer and the tooth canvas layer are stacked along the first direction (thickness direction). It is worth noting that the width dimensions of the back canvas layer and the tooth canvas layer are approximately equal. Among them, the tooth canvas layer is convexly provided with a plurality of meshing teeth. During the working process, through the meshing of the above - mentioned teeth with structures such as the driving wheel and the driven wheel, the synchronous belt can be driven as required.

[0027] Among them, the rubber layer is used as the main body part of the synchronous belt and is located between the back canvas layer and the tooth canvas layer. Specifically, the rubber layer is formed by mixing hydrogenated nitrile and fibers, and the fiber length ranges from 1 to 6 mm. It is also worth noting that: the fiber accounts for 0.01 - 0.06 of the total weight of the rubber layer. Through the above - mentioned setting method, by using a special range selection, the formed rubber layer has high anti - compression deformation performance, and also has high strength, high tear resistance, and wear resistance. Specifically, the tensile strength of the rubber calendering direction after fiber reinforcement can reach 25 Mpa. After having the above - mentioned properties, when the vacuum coating equipment is running, the synchronous belt of the present application can initially meet the requirements of high torque and insulation required by the equipment.

[0028] It is also worth noting that the width of the rubber layer is approximately the same as that of the above-mentioned back canvas layer and the tooth canvas layer to ensure a reasonable design structure.

[0029] Specifically, the K-type glass cord layer is embedded in the rubber layer. It is worth noting that the K-type glass cord layer extends along the transmission direction of the synchronous belt. In one preferred embodiment, the weight ratio of the rubber layer to the K-type glass cord layer is between 1:1.5 - 2.5. The K-type glass cord layer includes a plurality of K-type glass cords, and a first rubber layer is provided on the surfaces of the plurality of K-type glass cords. The plurality of K-type glass cords are arranged at intervals along the width direction of the synchronous belt, so that when the synchronous belt bears high torque, the force is more uniform, avoiding drawbacks such as tearing and deformation caused by obvious local stress. For the formation of the first rubber layer, the present application mainly adopts an impregnation process, which can make the first rubber layer on the surface of the K-type glass cord evenly distributed.

[0030] It is also worth noting that a protective layer is further wrapped on the outer side wall of the K-type glass cord, and the protective layer is closely attached to the surface of the glass cord through glue. The protective layer is a special RFL treatment agent for glass cords and a special HNBR rubber solution. The RFL treatment agent is a mixture of a primary water-soluble phenolic resin of resorcinol and formaldehyde and rubber latex.

[0031] In one feasible embodiment, the tooth canvas layer includes a base fabric layer and a wear-resistant layer, and the base fabric layer is disposed in contact with the surface of the rubber layer. The base fabric layer is shape-adapted to the wear-resistant layer, and the base fabric layer is shape-adapted to the rubber layer. It is worth noting that the base fabric layer is woven from nylon ropes and has a second rubber layer formed by an impregnation process. Similarly, the second rubber layer obtained on the surface of the base fabric layer can be evenly distributed. For the wear-resistant layer that meshes with the external driving wheel and driven wheel, it is made of polytetrafluoroethylene material, has a relatively high hardness and high wear resistance, and can effectively protect the rubber layer; and it can also improve the shear resistance of the tooth part of the synchronous belt during operation.

[0032] In one feasible embodiment, the plurality of meshing tooth parts are arranged at intervals and equidistantly along the transmission direction of the synchronous belt. It is worth noting that a tooth groove is formed between two adjacent meshing tooth parts, and the ratio of the length of the tooth groove to the length of the meshing tooth part itself is between 1 - 1.2. The above-mentioned embodiment mainly further improves the shear resistance of the tooth part of the synchronous belt during operation through structural design on the basis of the materials selected for the synchronous belt.

[0033] Through the above design method, the width shrinkage rate of the synchronous belt of the present application under the load-bearing condition is 0.2 - 0.3%.

[0034] Through the above design method, the present application introduces a K-type glass cord layer, which has the property of high tensile strength by itself and is superior to the prior art. In combination with the dipping process and other structures, the synchronous belt has the characteristics of high strength, good flexibility, and high tensile resistance. In addition, by using a rubber layer, which is the main structure of the synchronous belt and is formed by mixing hydrogenated nitrile and fibers, it can effectively strengthen the strength and the hardness can reach 85ShA.

[0035] The above embodiments only represent several implementation manners of the present utility model, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A high-strength insulating synchronous belt, used in vacuum coating equipment, characterized in that: include: Back canvas layer; A toothed canvas layer is stacked with the back canvas layer along a first direction, wherein the toothed canvas layer is provided with a plurality of meshing teeth protruding outwards; A rubber layer, located between the back canvas layer and the tooth canvas layer; A K-type glass cord layer, buried in the rubber layer and extending along the transmission direction of the synchronous belt, the K-type glass cord layer comprising a plurality of K-type glass cords and a first adhesive layer formed on the surface of the K-type glass cords by a dipping process; The protective layer is wrapped around the outer side wall of each of the K-shaped glass cords.

2. The high-strength insulating synchronous belt according to claim 1, characterized in that: The rubber layer comprises fibers, and the fiber length ranges from 1 to 6 mm.

3. The high-strength insulating synchronous belt according to claim 1, characterized in that: The tooth portion canvas layer comprises a grey cloth layer and a wear-resistant layer, and the grey cloth layer is arranged in contact with the surface of the rubber layer.

4. The high-strength insulating synchronous belt according to claim 3, characterized in that: The grey cloth layer is woven from nylon ropes, and a second adhesive layer is formed on the grey cloth layer through an adhesive dipping process.

5. The high-strength insulating synchronous belt according to claim 3, characterized in that: The wear-resistant layer is made of polytetrafluoroethylene.

6. The high-strength insulating synchronous belt according to claim 1, characterized in that: The plurality of meshing tooth portions are spaced and equidistantly arranged along the transmission direction of the synchronous belt.

7. The high-strength insulating synchronous belt according to claim 1, characterized in that: A tooth groove is formed between two adjacent meshing tooth portions, and the meshing tooth portions are arc teeth, and the pitch of the arc teeth is between 7.9-8.1 mm.

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