Device for preparing fatigue sample of cord thread rubber composite material

Abstract

The utility model discloses a tire cord rubber composite material fatigue sample preparation device, and relates to the technical field of tire cord rubber composite materials, the device comprises an inflation equipment frame mechanism, a cavity, a connecting device, an elastomer composite material covering device, a cover plate and a pre-vulcanization prefabricated product, the cavity is arranged in the inflation equipment frame mechanism; the connecting equipment is arranged at one end of the inflating equipment frame mechanism; the elastomer composite material covering equipment is arranged at the upper and lower ends of the cavity; the cover plate is arranged at one end, far away from each other, of the elastomer composite material covering equipment; the pre-vulcanization prefabricated product is formed by sequentially arranging the top rubber, the first cord fabric layer, the isolating layer, the second cord fabric layer and the bottom rubber. According to the utility model, the airtight rubber elastomer layer is in contact with the inflating equipment frame mechanism, so that the pressure in the inflating equipment frame mechanism is ensured, the effect of assisting in completing sample vulcanization is achieved, and finally, the vulcanized sample is cut to ensure that the size of the sample meets the test requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of cord rubber composite materials, in particular to a cord rubber composite material fatigue sample preparation device. Background Art

[0002] The most typical engineering application of cord rubber composites is tires. In recent years, with the popularity of radial tires, the speed and lightweight nature of automobiles, and the current society's emphasis on environmental and energy issues, the industry has put forward more stringent requirements for the safety and durability of tires. Since the fatigue damage of materials is closely related to the life of tires, the fatigue damage problem of rubber composites has received more attention from designers and users. The cyclic effect of stress between the layers of cord rubber composites causes interlayer cracking in the material, and the final form of fatigue failure is delamination. Therefore, the study of fatigue performance between the layers of cord rubber composites is an important topic. The commonly used fatigue test method is the belt flexure fatigue test method. The sample preparation method is to stack the cord layers and rubber layers of fixed sizes in a certain order, and finally vulcanize and prepare the sample in a vulcanization mold.

[0003] Typically, fatigue test specimens of cord-rubber composite materials are made by stacking cord layers and rubber layers of fixed size in a certain order and vulcanizing them in a vulcanization mold. Their thickness, preparation process, and actual application conditions vary greatly. Utility Model Content

[0004] The purpose of the utility model is to provide a device for preparing fatigue samples of a cord rubber composite material, so as to solve the problems in the background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A fatigue sample preparation device for a cord rubber composite material, comprising:

[0007] Inflatable equipment frame mechanism;

[0008] Cavity; the cavity is provided inside the inflatable device frame mechanism;

[0009] Connecting device; the connecting device is provided at one end of the inflatable device frame mechanism;

[0010] Elastomer composite material covering equipment; the elastomer composite material covering equipment is arranged at the upper and lower ends of the cavity;

[0011] Cover plate; the cover plate is arranged at one end of the elastomer composite material covering device away from each other;

[0012] The invention also includes a pre-vulcanized preform for testing, wherein the pre-vulcanized preform is formed by arranging a top rubber, a first cord layer, an isolation layer, a second cord layer and a base rubber in sequence.

[0013] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0014] In an optional solution: the thickness H of the inflatable equipment frame mechanism is designed to be between 10mm-500mm; the width W1 is designed to be between 100mm-500mm; the length L1 is designed to be between 400mm-700mm, the cavity width W2 is designed to be between 50mm-450mm; the length L2 is designed to be between 350mm-650mm, and a frame is provided inside the inflatable equipment frame mechanism; the frame widths W3 and W4 are designed to be between 10mm-50mm.

[0015] In an optional scheme: the elastomer composite covering equipment is composed of an airtight rubber elastomer layer, a third cord layer, and a rubber layer. The width W5 of the elastomer composite covering equipment is designed to be between 150mm-550mm; the length L3 is designed to be between 450mm-750mm; the total thickness H2 is designed to be between 3mm-20mm; the thickness H21 of the rubber elastomer layer is designed to be between 0.2mm-2mm, the thickness H22 of the third cord layer is designed to be between 1mm-5mm, and the thickness H21 of the rubber layer is designed to be between 1.8mm-13mm.

[0016] In an optional solution: a plurality of grooves are provided on the cover plate, and the cover plate is a rectangular steel plate, the total width W6 of the cover plate is designed to be between 200mm-600mm; the total length L4 is designed to be between 500mm-800mm; the total thickness H6 is designed to be between 5mm-30mm; the groove width W7 is designed to be between 20mm-450mm; the groove length L5 is designed to be between 300mm-500mm; the groove thickness H7 is designed to be between 0mm-10mm, and the spacing W8 between the grooves is designed to be between 0mm-20mm.

[0017] In an optional solution, the first cord layer and the second cord layer are both rubber and cord composites.

[0018] In an optional solution: the length L6 of the preform before vulcanization is designed to be between 300mm and 500mm; the width is designed to be between 20mm and 450mm; the top rubber thickness H8 is designed to be between 0.5mm and 10mm, the first cord layer thickness H9 is designed to be between 0.5mm and 10mm, the second cord layer thickness H10 is designed to be between 0.5mm and 10mm, and the bottom rubber thickness H11 is designed to be between 0.5mm and 10mm; the isolation layer length L7 is designed to be between 30mm and 60mm.

[0019] In an optional solution, the isolation layer is made of polyethylene film.

[0020] In an optional solution: the compressed air pressure of the connecting device is between 0.6 MPa and 3.5 MPa.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] The utility model ensures the pressure inside the inflatable device frame mechanism by making the airtight rubber elastic layer contact with the inflatable device frame mechanism, and the third cord layer ensures the strength of the elastomer composite material covering the device with air retention function. The rubber layer contacts the sample to achieve the effect of assisting in the vulcanization of the sample. Finally, the vulcanized sample is cut to ensure that the sample size meets the test requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural side view of the utility model.

[0024] Figure 2 This is a schematic diagram of the frame structure of the inflation equipment of the present invention.

[0025] Figure 3 This is a schematic diagram of the structure of the elastomer composite material covering equipment of the present utility model.

[0026] Figure 4 This is a schematic diagram of the cover structure of the present utility model.

[0027] Figure 5 This is a schematic diagram of the structure of the preform before vulcanization of the present invention.

[0028] Among them: 1. Inflatable equipment frame mechanism; 11. Frame; 12. Cavity; 13. Connecting equipment; 2. Elastomer composite material covering equipment; 21. Rubber elastomer layer; 22. Third cord layer; 23. Rubber layer; 3. Cover plate; 31. Groove; 4. Preformed product before vulcanization; 41. Top rubber; 42. First cord layer; 43. Isolation layer; 44. Second cord layer; 45. Bottom rubber. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0030] In one embodiment, Figure 1-Figure 5As shown, a device for preparing fatigue samples of cord rubber composite materials includes: an inflatable device frame mechanism 1, a cavity 12, a connecting device 13, an elastomer composite material covering device 2, a cover plate 3 and a pre-vulcanized preform 4, wherein the cavity 12 is arranged inside the inflatable device frame mechanism 1; the connecting device 13 is arranged at one end of the inflatable device frame mechanism 1; the elastomer composite material covering device 2 is arranged at the upper and lower ends of the cavity 12; the cover plate 3 is arranged at one end of the elastomer composite material covering device 2 away from each other; the pre-vulcanized preform 4 is composed of a top rubber 41, a first cord layer 42, an isolation layer 43, a second cord layer 44, and a bottom rubber 45 arranged in sequence, and the inflatable device frame mechanism 1, the cavity 12, the connecting device 13, the elastomer composite material covering device 2 and the cover plate 3 are combined into a whole by pressure bonding, so that the pre-vulcanized preform 4 can be tested.

[0031] In one embodiment, Figure 2 As shown, the thickness H of the inflatable equipment frame mechanism 1 is designed to be between 10mm-500mm; the width W1 is designed to be between 100mm-500mm; the length L1 is designed to be between 400mm-700mm, the width W2 of the cavity 12 is designed to be between 50mm-450mm; the length L2 is designed to be between 350mm-650mm, and a frame 11 is provided inside the inflatable equipment frame mechanism 1; the widths W3 and W4 of the frame 11 are designed to be between 10mm-50mm, so that a suitable pre-vulcanized preform 4 can be placed inside the cavity 12.

[0032] In one embodiment, Figure 3 As shown, the elastomer composite covering device 2 is composed of an airtight rubber elastomer layer 21, a third cord layer 22, and a rubber layer 23. The width W5 of the elastomer composite covering device 2 is designed to be between 150mm and 550mm; the length L3 is designed to be between 450mm and 750mm; the total thickness H2 is designed to be between 3mm and 20mm; the thickness H21 of the rubber elastomer layer 21 is designed to be between 0.2mm and 2mm, the thickness H22 of the third cord layer 22 is designed to be between 1mm and 5mm, and the thickness H21 of the rubber layer 23 is designed to be between 1.8mm and 13mm. The pressure in the inflatable device frame mechanism 1 is ensured by the rubber elastomer layer 21, and the strength of the elastomer composite covering device 2 with air retention function is ensured by the third cord layer 22.

[0033] In one embodiment, Figure 4As shown, the cover plate 3 is provided with a plurality of grooves 31, and the cover plate 3 is a steel rectangular, the total width W6 of the cover plate 3 is designed to be between 200mm-600mm; the total length L4 is designed to be between 500mm-800mm; the total thickness H6 is designed to be between 5mm-30mm; the width W7 of the groove 31 is designed to be between 20mm-450mm; the length L5 of the groove 31 is designed to be between 300mm-500mm; the thickness H7 of the groove 31 is designed to be between 0mm-10mm; the spacing W8 between a plurality of grooves 31 is designed to be between 0mm-20mm, and the groove 31 can ensure the shape of the vulcanized sample.

[0034] In one embodiment, as shown in Figure 5 The first and second cord layers 42 and 44 are both rubber and cord composites, which are convenient to be detected.

[0035] In one embodiment, as shown in Figure 5 The length L6 of the preform 4 before vulcanization is designed to be between 300mm-500mm; the width is designed to be between 20mm-450mm; the thickness H8 of the top glue 41 is designed to be between 0.5mm-10mm; the thickness H9 of the first cord layer 42 is designed to be between 0.5mm-10mm; the thickness H10 of the second cord layer 44 is designed to be between 0.5mm-10mm; the thickness H11 of the bottom glue 45 is designed to be between 0.5mm-10mm; and the length L7 of the separation layer 43 is designed to be between 30mm-60mm, so that it can cooperate with the inflating device frame mechanism 1 and the elastomer composite material covering device 2 to make detection.

[0036] In one embodiment, as shown in Figure 5 The separation layer 43 is made of polyethylene film, and polyethylene is a thermoplastic plastic, which has excellent physical and chemical properties, such as water resistance, chemical resistance, transparency and renewability.

[0037] In one embodiment, as shown in Figure 1 And Figure 2 The compressed air pressure of the connecting device 13 is between 0.6MPa-3.5MPa, which ensures that the compressed air has a suitable pressure.

[0038] The above embodiment discloses a cord-rubber composite material fatigue sample preparation device, wherein the sample preparation of the pre-vulcanized product 4 is completed by placing the pre-vulcanized product 4 between the elastomer composite material covering device 2 and the two cover plates 3, then controlling the pressure at 0.6-3.5 MPa by compressed air connected by the connecting device 13, and then vulcanizing at a certain temperature, pressure and time, wherein the vulcanization temperature is ≥140℃, the vulcanization pressure is ≥3.5 MPa, and the vulcanization time is determined according to the curing curve of the rubber compound, and the cord-rubber composite material fatigue test vulcanized sample is cut according to the sample size requirements (length, width) of the fatigue test device to ensure that the sample size meets the test requirements.

[0039] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A fatigue sample preparation device for a cord rubber composite material, comprising an inflatable device frame mechanism (1); characterized in that: Also includes: A cavity (12); the cavity (12) is arranged inside the inflatable device frame mechanism (1); A connecting device (13); the connecting device (13) is provided at one end of the inflatable device frame mechanism (1); Elastomer composite material covering equipment (2); the elastomer composite material covering equipment (2) is arranged at the upper and lower ends of the cavity (12); A cover plate (3); the cover plate (3) is arranged at one end of the elastomer composite material covering device (2) that is away from each other; The invention also includes a pre-vulcanized preform (4) for testing, wherein the pre-vulcanized preform (4) is formed by sequentially arranging a top rubber (41), a first cord layer (42), an isolation layer (43), a second cord layer (44), and a bottom rubber (45).

2. The fatigue sample preparation device of a cord rubber composite material according to claim 1, characterized in that: The thickness (H) of the inflatable device frame mechanism (1) is designed to be between 10 mm and 500 mm; the width (W1) is designed to be between 100 mm and 500 mm; and the length (L1) is designed to be between 400 mm and 700 mm. The width (W2) of the cavity (12) is designed to be between 50 mm and 450 mm; and the length (L2) is designed to be between 350 mm and 650 mm. A frame (11) is provided inside the inflatable device frame mechanism (1); and the widths (W3, W4) of the frame (11) are designed to be between 10 mm and 50 mm.

3. The fatigue sample preparation device of a cord rubber composite material according to claim 1, characterized in that: The elastomer composite material covering device (2) is composed of an airtight rubber elastomer layer (21), a third cord layer (22), and a rubber layer (23). The width (W5) of the elastomer composite material covering device (2) is designed to be between 150 mm and 550 mm; the length (L3) is designed to be between 450 mm and 750 mm; the total thickness (H2) is designed to be between 3 mm and 20 mm; the thickness (H21) of the rubber elastomer layer (21) is designed to be between 0.2 mm and 2 mm, the thickness (H22) of the third cord layer (22) is designed to be between 1 mm and 5 mm, and the thickness (H21) of the rubber layer (23) is designed to be between 1.8 mm and 13 mm.

4. The apparatus for preparing fatigue samples of a cord rubber composite material according to claim 1, characterized in that: The cover plate (3) is provided with a plurality of grooves (31), and the cover plate (3) is a rectangular steel plate. The total width (W6) of the cover plate (3) is designed to be between 200 mm and 600 mm; the total length (L4) is designed to be between 500 mm and 800 mm; the total thickness (H6) is designed to be between 5 mm and 30 mm; and the width (W7) of the grooves (31) is designed to be between 20 mm and 450 mm. The length (L5) of the groove (31) is designed to be between 300 mm and 500 mm; the thickness (H7) of the groove (31) is designed to be between 0 mm and 10 mm; and the spacing (W8) between the grooves (31) is designed to be between 0 mm and 20 mm.

5. The apparatus for preparing fatigue samples of a cord rubber composite material according to claim 1, characterized in that: The first cord layer (42) and the second cord layer (44) are both rubber and cord composites.

6. The apparatus for preparing fatigue samples of a cord rubber composite material according to claim 1, characterized in that: The length (L6) of the preform (4) before vulcanization is designed to be between 300 mm and 500 mm; the width is designed to be between 20 mm and 450 mm; the thickness (H8) of the top rubber (41) is designed to be between 0.5 mm and 10 mm, the thickness (H9) of the first cord layer (42) is designed to be between 0.5 mm and 10 mm, the thickness (H10) of the second cord layer (44) is designed to be between 0.5 mm and 10 mm, and the thickness (H11) of the bottom rubber (45) is designed to be between 0.5 mm and 10 mm; and the length (L7) of the isolation layer (43) is designed to be between 30 mm and 60 mm.

7. The apparatus for preparing fatigue samples of a cord rubber composite material according to claim 1, characterized in that: The isolation layer (43) is made of polyethylene film.

8. The apparatus for preparing fatigue samples of a cord rubber composite material according to claim 1, characterized in that: The compressed air pressure of the connecting device (13) is between 0.6 MPa and 3.5 MPa.

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