Lightweight conveyor belt

Abstract

The utility model provides a kind of lightweight conveyor belt, conveyor belt includes upper cover adhesive, lower cover adhesive and the framework layer being arranged between upper cover adhesive, lower cover adhesive, the upper surface and lower surface of framework layer are all set adhesive layer, upper cover adhesive, lower cover adhesive are connected by adhesive layer and framework layer, framework layer is woven from main warp, binding warp and weft, main warp is the special cord made by the multiple strand of initial twist rope twist, initial twist rope includes inner core fiber and the outer layer fiber being wrapped in the periphery of inner core fiber.The utility model uses high-strength, high lubricity, difficult adhesion fiber as inner core fiber, uses high-strength easy adhesion fiber as outer layer fiber, through the mixed weaving design of inner core fiber cladding fiber, effectively exert the high-strength characteristics of novel fiber material, and effectively solve the interface adhesion problem with rubber by the physical action with other fibers, and improve the overall strength of conveyor belt by the structural design of framework layer.

Description

Technical Field

[0001] This utility model relates to the field of rubber conveyor belts for industrial conveying, and in particular to a lightweight conveyor belt. Background Technology

[0002] In recent years, conveyor belts with fiber fabrics as the skeleton material have gradually attracted market attention, especially those made of aramid fiber. Due to its advantages such as high strength, high modulus, impact resistance, flame retardancy, and light weight, conveyor belts developed with aramid fiber as the skeleton material are widely used in the industry and have shown great advantages in terms of lightweighting and energy saving. However, there are risks such as internal wear during use. Therefore, the development of lightweight conveyor belts with more stable and superior performance and higher cost performance has broad market demand and promotion value.

[0003] Besides aramid fibers, ultra-high molecular weight polyethylene fibers, polyarylate fibers, polyimide fibers, poly(p-phenylenebenzodioxazole) fibers, and polyvinyl alcohol acetal fibers also possess excellent performance or high cost-effectiveness, making them feasible for application in the field of conveyor belt skeleton materials. For example, ultra-high molecular weight polyethylene fibers have a strength nine times that of steel wire ropes, but a density only two-thirds that of aramid fibers. However, problems such as interfacial adhesion and uneven modulus between different fibers leading to a significant decrease in overall strength have hindered their application and promotion. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a lightweight conveyor belt. The main warp yarn is a special rope made by re-twisting multiple strands of initial twisted yarn. The initial twisted yarn includes an inner core fiber and an outer layer fiber wrapped around the inner core fiber. High-strength, high-lubricity, and difficult-to-bond fiber is used as the inner core fiber, while high-strength and easy-to-bond fiber is used as the outer layer fiber. Through the mixed weaving design of the inner core fiber covering the outer fiber, the high-strength characteristics of the new fiber material are effectively utilized. Through physical interaction with other fibers, the interface adhesion problem with rubber is effectively solved, greatly expanding the application range of various high-performance fiber materials. The skeleton layer is woven from the main warp yarn, binding warp yarn, and weft yarn. The structural design of the skeleton layer improves the overall stability and cost-effectiveness of the conveyor belt.

[0005] The technical solution adopted in this utility model is: A lightweight conveyor belt, wherein: the conveyor belt includes an upper cover rubber, a lower cover rubber, and a skeleton layer disposed between the upper cover rubber and the lower cover rubber, an adhesive layer is disposed on both the upper and lower surfaces of the skeleton layer, the upper cover rubber and the lower cover rubber are connected by the adhesive layer and the skeleton layer, the skeleton layer is woven from main warp yarns, binding warp yarns and weft yarns, the main warp yarns are special yarns made by re-twisting multiple strands of initial twisted yarn, the initial twisted yarn includes inner core fibers and outer layer fibers wrapped around the inner core fibers.

[0006] Preferably, in the lightweight conveyor belt, the binding warp yarn is selected from one of nylon 66, nylon 6, polyvinyl acetal fiber, and polyester fiber, with a fineness of 550-4000 dtex; the binding warp yarn is a twisted yarn made by plying and twisting 1-5 strands of binding warp yarn.

[0007] Preferably, in the lightweight conveyor belt, the weft yarn is selected from one of nylon 66, nylon 6, polyvinyl acetal fiber, and polyester fiber, with a fineness of 550-4000 dtex; the weft yarn is a twisted yarn made by plying and twisting 1-12 strands of weft yarn.

[0008] Preferably, in the lightweight conveyor belt, the inner core fiber is ultra-high molecular weight polyethylene fiber or polyaramid fiber.

[0009] Preferably, in the lightweight conveyor belt, the ultra-high molecular weight polyethylene fiber has a molecular weight higher than 1 million.

[0010] Preferably, in the lightweight conveyor belt, the special cord has a breaking elongation of 2%-6% and a fineness of 500dtex~6000dtex.

[0011] Preferably, in the lightweight conveyor belt, the outer fiber is selected from one of polyaryl ester fiber, polyarylamide fiber, polyimide fiber, poly(p-phenylenebenzodioxazole) fiber, and polyvinyl alcohol acetal fiber.

[0012] Preferably, in the lightweight conveyor belt, the outer layer fibers are wrapped around the inner core fibers in a parallel arrangement or by twisting in a spiral winding manner.

[0013] Preferably, in the lightweight conveyor belt, the thickness of the upper cover rubber is 3-40mm, and the thickness of the lower cover rubber is 2-30mm.

[0014] Preferably, in the lightweight conveyor belt, the thickness of the adhesive layer is 1-3 mm.

[0015] Advantages of this utility model: (1) The lightweight conveyor belt of this utility model has a main warp yarn made of a special rope made of multiple strands of initial twisted rope. The initial twisted rope includes an inner core fiber and an outer layer fiber wrapped around the inner core fiber. The inner core fiber is made of high-strength, high-lubricity, and difficult-to-adhere fiber, and the outer layer fiber is made of high-strength and easy-to-adhere fiber. Through the mixed weaving design of inner core fiber covering fiber, the high strength characteristics of the new fiber material are effectively utilized. Through the physical interaction with other fibers, the interface adhesion problem with rubber is effectively solved, which greatly improves the application range of various high-performance fiber materials. The skeleton layer is woven from the main warp yarn, binding warp yarn and weft yarn. The overall stability and cost performance of the conveyor belt are improved through the structural design of the skeleton layer.

[0016] (2) The lightweight conveyor belt of this utility model has a skeleton layer woven from main warp yarns, binding warp yarns and weft yarns. The main warp yarns are special ropes made by re-twisting multiple strands of initial twisted ropes. The initial twisted ropes include inner core fibers and outer layer fibers wrapped around the inner core fibers. The structural design of inner core fibers covering outer layer fibers can effectively give full play to the advantages of the two fibers, make up for the performance deficiencies of single fibers in certain aspects, and effectively improve the problem of internal wear caused by high friction coefficient that may exist in the same type of fiber under stress.

[0017] (3) The lightweight conveyor belt of this utility model has the advantages of lightweight, high strength, low elongation, impact resistance and tear resistance in its skeleton material, thereby improving the overall performance of the conveyor belt. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the inner core fiber and the outer layer fiber of this utility model.

[0019] Figure 2 This is a schematic diagram of the structure of the initial twisted rope of this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of the main warp yarn or special cord of this utility model.

[0021] Figure 4 This is a three-dimensional view of the skeleton layer of this utility model.

[0022] Figure 5 This is a schematic diagram of the skeleton layer of this utility model.

[0023] Figure 6 This is a schematic diagram of the lightweight conveyor belt of this utility model. Detailed Implementation

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

[0025] like Figures 1-6A lightweight conveyor belt includes an upper cover rubber 8, a lower cover rubber 9, and a skeleton layer 11 disposed between the upper cover rubber 8 and the lower cover rubber 9. An adhesive layer 10 is provided on both the upper and lower surfaces of the skeleton layer 11. The upper cover rubber 8 and the lower cover rubber 9 are connected to the skeleton layer 11 via the adhesive layer 10. The skeleton layer 11 is woven from main warp yarns 5, binding warp yarns 6, and weft yarns 7. The main warp yarns 5 are special cords 4 made by re-twisting multiple strands of initial twisted cord 3. The initial twisted cord 3 includes inner core fibers 1 and outer layer fibers 2 wrapped around the inner core fibers. The outer layer fibers 2 serve to improve tensile strength and enhance interfacial adhesion.

[0026] The binding warp yarn 6 is selected from one of nylon 66, nylon 6, polyvinyl acetal fiber, and polyester fiber, with a fineness of 550-4000 dtex; the binding warp yarn is a twisted yarn made by plying and twisting 1-5 strands of binding warp yarn; the weft yarn 7 is selected from one of nylon 66, nylon 6, polyvinyl acetal fiber, and polyester fiber, with a fineness of 550-4000 dtex; the weft yarn is a twisted yarn made by plying and twisting 1-12 strands of weft yarn.

[0027] The inner core fiber 1 is ultra-high molecular weight polyethylene fiber or polyarylate fiber; the molecular weight of the ultra-high molecular weight polyethylene fiber is higher than 1 million.

[0028] The special cord 4 has a breaking elongation of 2%-6% and a fineness of 500dtex~6000dtex; the outer fiber 2 is selected from one of polyarylate fiber, polyarylamide fiber, polyimide fiber, poly(p-phenylenebenzodioxazole) fiber, and polyvinyl alcohol acetal fiber; the outer fiber 2 is wrapped around the core fiber 1 in a parallel arrangement or by twisting in a spiral winding manner.

[0029] The thickness of the upper cover adhesive 8 is 3-40mm, the thickness of the lower cover adhesive 9 is 2-30mm, and the thickness of the adhesive layer 10 is 1-3mm.

[0030] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A lightweight conveyor belt, characterized in that: The conveyor belt includes an upper cover rubber (8), a lower cover rubber (9), and a skeleton layer (11) disposed between the upper cover rubber (8) and the lower cover rubber (9). An adhesive layer (10) is provided on both the upper and lower surfaces of the skeleton layer (11). The upper cover rubber (8) and the lower cover rubber (9) are connected by the adhesive layer (10) and the skeleton layer (11). The skeleton layer (11) is woven from main warp yarns (5), binding warp yarns (6), and weft yarns (7). The main warp yarns (5) are special cords (4) made by re-twisting multiple strands of initial twisted cord (3). The initial twisted cord (3) includes inner core fibers (1) and outer layer fibers (2) wrapped around the inner core fibers.

2. The lightweight conveyor belt according to claim 1, characterized in that: The binding warp yarn (6) is selected from one of nylon 66, nylon 6, polyvinyl alcohol acetal fiber, and polyester fiber, with a fineness of 550-4000 dtex; the binding warp yarn is a twisted yarn made by plying and twisting 1-5 strands of binding warp yarn.

3. The lightweight conveyor belt according to claim 1, characterized in that: The weft yarn (7) is selected from one of nylon 66, nylon 6, polyvinyl alcohol acetal fiber, and polyester fiber, with a fineness of 550-4000 dtex; the weft yarn is a twisted yarn made by plying and twisting 1-12 strands of weft yarn.

4. The lightweight conveyor belt according to claim 1, characterized in that: The inner core fiber (1) is ultra-high molecular weight polyethylene fiber or polyarylate fiber.

5. The lightweight conveyor belt according to claim 4, characterized in that: The ultra-high molecular weight polyethylene fiber has a molecular weight of over 1 million.

6. The lightweight conveyor belt according to claim 1, characterized in that: The special cord (4) has a breaking elongation of 2%-6% and a fineness of 500dtex~6000dtex.

7. The lightweight conveyor belt according to claim 1, characterized in that: The outer fiber (2) is selected from one of polyarylate fiber, polyarylamide fiber, polyimide fiber, poly(p-phenylenebenzodioxazole) fiber, and polyvinyl alcohol acetal fiber.

8. The lightweight conveyor belt according to claim 1, characterized in that: The outer fibers (2) are wrapped around the inner core fibers (1) in a parallel arrangement or by twisting in a spiral winding manner.

9. The lightweight conveyor belt according to claim 1, characterized in that: The thickness of the upper cover adhesive (8) is 3-40 mm, and the thickness of the lower cover adhesive (9) is 2-30 mm.

10. The lightweight conveyor belt according to claim 1, characterized in that: The thickness of the adhesive layer (10) is 1-3 mm.

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