Constant temperature and humidity coating fabric bending tester

Abstract

The utility model discloses a constant temperature and humidity coating fabric flexure test machine, including frame, be equipped with test box on the frame, be equipped with sample seat in the test box, be equipped with the matching corresponding lower clamp holder and upper clamp holder on the sample seat, the lower surface of test box is equipped with motor and driven wheel, and the output shaft transmission connection driven wheel of motor, the lower surface of test box is equipped with the base plate, and the lower surface of base plate is equipped with the mount pad and motor, and the mount pad and motor interval arrangement, be equipped with driven wheel on the mount pad, and the pivot of driven wheel is arranged on the mount pad, one end of driven wheel away from the mount pad after the pivot is equipped with the chuck, and the clamping groove is set up on the chuck, and the eccentric wheel sleeve ring is set up on the outside of chuck, the eccentric shaft seat of displaceable is embedded in the clamping groove, and one side of eccentric shaft seat away from the pivot is equipped with the eccentric shaft that projects outward, and the two sides of eccentric shaft seat are equipped with the adjusting screw parallel with clamping groove respectively. The application adopts adjustable eccentric shaft drive crank connecting rod, and flexure stroke, cycle number is adjustable, and improves test equipment flexibility.

Description

Technical Field

[0001] This utility model belongs to the field of testing equipment technology, and in particular relates to a constant temperature and humidity coated fabric flexural testing machine. Background Technology

[0002] Coated fabrics are composite materials consisting of one or more layers of rubber, plastic, or other polymer materials coated onto a fabric substrate. Due to their excellent abrasion resistance, weather resistance, water resistance, and chemical corrosion resistance, they are widely used in protective clothing, inflatable structures, and outdoor equipment. In these practical applications, coated fabrics inevitably endure repeated mechanical stresses such as bending, folding, compression, and torsion. Long-term or high-intensity flexural stress can lead to coating cracking, peeling from the base fabric, and decreased strength, seriously affecting product safety and service life. Flexural testing is used to evaluate the durability of coated fabrics under repeated bending, providing accurate testing and evaluation of their flexural resistance. Existing flexural testing machines typically operate under normal temperature and humidity conditions, failing to simulate the durability of materials under different climatic environments; their fixed flexural stroke cannot accommodate different samples and varying degrees of flexural stress. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the purpose of this utility model is to provide a constant temperature and humidity coated fabric flexural testing machine, which integrates a temperature and humidity control environment chamber and the regulation of flexural stroke in the test chamber, thereby meeting the flexural performance evaluation of materials under various conditions and environments.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A constant temperature and humidity coated fabric flexural testing machine includes a frame with a test chamber on the frame; a sample holder is provided in the test chamber, and a matching lower clamp and upper clamp are provided on the sample holder; a motor and a driven wheel are provided below the test chamber, and the output shaft of the motor is connected to the driven wheel. The test box has a base plate at the bottom, and a mounting base and a motor are located below the base plate. The mounting base and the motor are spaced apart. The mounting base has a driven wheel, and the shaft of the driven wheel passes through the mounting base. After the shaft passes through the mounting base, a clamp is located at the end away from the driven wheel. The clamp has a groove, and an eccentric wheel collar is fitted on the outside of the clamp. A movable eccentric shaft seat is embedded in the slot. The side of the eccentric shaft seat away from the rotating shaft has an outwardly protruding eccentric shaft. Adjusting screws parallel to the slot are provided on both sides of the eccentric shaft seat. The adjusting screws are threaded onto the eccentric wheel collar and are connected to the eccentric wheel collar. A crank connecting rod is fitted on the eccentric shaft.

[0005] Furthermore, in some embodiments, the rear of the test chamber is provided with a heating component, a humidifying component, and a fan, and the middle of the test chamber is provided with a sample holder, a lower clamp fixed on the sample holder, and an upper clamp movably disposed on the lower clamp.

[0006] Furthermore, in some embodiments, a sliding plate capable of vertical displacement is provided above the eccentric wheel collar. The sliding plates are spaced apart behind the mounting base and are parallel to the mounting base. A rotatable rotary joint is provided on the side of the sliding plate away from the mounting base. The rotary joint is located on the sliding plate. The end of the crank connecting rod away from the eccentric shaft passes through the rotary joint.

[0007] Furthermore, in some embodiments, a lifting rod is provided on the sliding plate, which extends into the test chamber after passing through the substrate; a drive seat is provided at the end of the lifting rod away from the sliding plate, and an upper clamp is fixed on the drive seat.

[0008] This application is used to test the dynamic flexural fatigue performance of coated fabrics under controlled temperature and humidity conditions. It adopts an adjustable eccentric shaft to drive the crank connecting rod, which drives the sample clamping device to perform reciprocating bending motion. The flexural stroke and number of cycles are adjustable, simulating the flexural action in actual use, improving the flexibility of the testing equipment and expanding the testing scenarios of the testing equipment. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the frame of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the drive seat portion in an embodiment of the present utility model; Figure 3 This is a schematic diagram of the test box portion of an embodiment of the present invention; Figure 4 This is a schematic diagram of the sliding plate portion in an embodiment of the present invention; Figure 5 This is a schematic diagram of the eccentric shaft portion in an embodiment of the present invention; Figure 6 This is a cross-sectional structural diagram of the test box portion of an embodiment of this utility model.

[0010] Explanation of markings in the diagram: Frame 11, test chamber 12, lower clamp 13, upper clamp 14, sample holder 15 (L-shaped), heating element 17, humidifying element 18, fan 19, sliding plate 21, mounting base 41 (L-shaped), driven wheel 42, motor 43, base plate 44, lifting rod 45, drive seat 47, rotating shaft 51, chuck 52, chuck slot 53, eccentric shaft seat 54, adjusting screw 55, eccentric wheel collar 56, crank connecting rod 57, rotary joint 58, eccentric shaft 59. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0012] In the description of this utility model, it should be noted that the terms "lateral," "upper," "lower," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0013] Please refer to the attached drawings. This application includes a frame 11, a test box 12 is provided on the frame 11, a sample holder 15 is provided in the test box 12, and a lower clamp 13 and an upper clamp 14 are provided on the sample holder 15 that are matched and can be clamped together; a motor 43 and a driven wheel 42 are provided below the test box 12, and the output shaft of the motor 43 is connected to the driven wheel 42.

[0014] Furthermore, the rear of the test chamber 12 is provided with a heating component 17, a humidifying component 18, and a fan 19. The middle of the test chamber 12 is provided with a sample holder 15, a lower clamp 13 is fixed on the sample holder 15, and an upper clamp 14 is movably disposed on the lower clamp 13.

[0015] Furthermore, in one embodiment, a base plate 44 is provided below the test box 12, and a mounting base 41 and a motor 43 are provided below the base plate 44. The mounting base 41 and the motor 43 are spaced apart. A driven wheel 42 is provided on the mounting base 41, and the shaft 51 of the driven wheel 42 passes through the mounting base 41. A chuck 52 is provided at the end of the shaft 51 that passes through the mounting base 41 and is away from the driven wheel 42. A groove 53 is provided on the chuck 52, and an eccentric wheel collar 56 is sleeved on the outer side of the chuck 52. A movable eccentric shaft seat 54 is embedded in the groove 53. An outwardly protruding eccentric shaft 59 is provided on the side of the eccentric shaft seat 54 away from the shaft 51. Adjusting screws 55 parallel to the groove 53 are provided on both sides of the eccentric shaft seat 54. The adjusting screws 55 pass through the eccentric wheel collar 56 and are threadedly connected to the eccentric wheel collar 56. A crank connecting rod 57 is sleeved on the eccentric shaft 59. Adjusting screw 55 adjusts the offset position of eccentric shaft seat 54 in chuck 52 (slot 53), thereby adjusting the eccentricity of eccentric shaft 59.

[0016] See appendix Figure 6 As shown, attached Figure 6 The diagram shows the mating structure related to the crank connecting rod 57; a sliding plate 21 that can be raised and lowered is provided above the eccentric wheel collar 56. The sliding plates 21 are spaced apart behind the mounting base 41 and are parallel to the mounting base 41. A rotatable rotary joint 58 is provided on the side of the sliding plate 21 away from the mounting base 41. The end of the crank connecting rod 57 away from the eccentric shaft 59 (eccentric shaft 59 in the eccentric wheel collar 56) passes through the rotary joint 58. The up and down swing of the crank connecting rod 57 drives the sliding plate 21 to move up and down through the rotary joint 58.

[0017] Furthermore, in one embodiment, the sliding plate 21 is provided with a lifting rod 45, which extends through the substrate 44 and into the test chamber 12; the end of the lifting rod 45 away from the sliding plate 21 is provided with a drive seat 47, on which an upper clamping seat 14 is fixed. The sliding plate 21 drives the lifting rod 45 to move up and down, and the lifting rod 45 moves up and down in conjunction with the upper clamping seat 14 through the drive seat 47, thereby controlling the clamping distance between the upper clamping seat 14 and the lower clamping seat 13, and thus performing a flexure test on the sample.

[0018] The embodiments described above only illustrate some implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A constant temperature and humidity coated fabric flexural testing machine, comprising: A frame (11) is provided with a test box (12); characterized in that a sample holder (15) is provided in the test box (12), and a matching lower clamp (13) and upper clamp (14) are provided on the sample holder (15); a motor (43) and a driven wheel (42) are provided below the test box (12), and the output shaft of the motor (43) is connected to the driven wheel (42). The test box (12) is provided with a base plate (44) below it. The base plate (44) is provided with a mounting seat (41) and a motor (43) below it. The mounting seat (41) and the motor (43) are spaced apart. The mounting seat (41) is provided with a driven wheel (42). The shaft (51) of the driven wheel (42) passes through the mounting seat (41). The shaft (51) passes through the mounting seat (41) and is located away from the driven wheel (42) with a clamp (52). The clamp (52) has a groove (53) and an eccentric wheel collar (56) is sleeved on the outside of the clamp (52). A movable eccentric shaft seat (54) is embedded in the slot (53). The side of the eccentric shaft seat (54) away from the rotating shaft (51) is provided with an outwardly protruding eccentric shaft (59). Adjusting screws (55) parallel to the slot (53) are provided on both sides of the eccentric shaft seat (54). The adjusting screws (55) are threaded on the eccentric wheel collar (56). The adjusting screws (55) are threaded to the eccentric wheel collar (56). A crank connecting rod (57) is sleeved on the eccentric shaft (59).

2. The constant temperature and humidity coated fabric flexural testing machine according to claim 1, characterized in that, The test chamber (12) is equipped with a heating component (17), a humidifying component (18), and a fan (19) at the rear. The test chamber (12) is equipped with a sample holder (15) in the middle. The lower clamp (13) is fixed on the sample holder (15), and the upper clamp (14) is movably mounted on the lower clamp (13).

3. The constant temperature and humidity coated fabric flexural testing machine according to claim 1, characterized in that, Above the eccentric wheel collar (56) is a sliding plate (21) that can be raised and lowered. The sliding plates (21) are spaced apart behind the mounting base (41). The sliding plates (21) are parallel to the mounting base (41). A rotatable rotating joint (58) is provided on the side of the sliding plate (21) away from the mounting base (41). The rotating joint (58) is provided on the sliding plate (21). The end of the crank connecting rod (57) away from the eccentric shaft (59) passes through the rotating joint (58).

4. The constant temperature and humidity coated fabric flexural testing machine according to claim 3, characterized in that, The sliding plate (21) is provided with a lifting rod (45), which extends into the test box (12) after passing through the base plate (44); the end of the lifting rod (45) away from the sliding plate (21) is provided with a drive seat (47), and an upper clamp (14) is fixed on the drive seat (47).

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