Novel tensile property testing instrument for composite leather

Abstract

The utility model discloses a novel tensile property testing instrument for composite leather, and aims to solve the problems that the conventional testing instrument can only detect one sample every time, so that the operations of loading and unloading samples need to be repeatedly carried out in the testing process, and the testing efficiency is reduced. According to the technical scheme, the novel tensile property testing instrument for the composite leather is characterized by comprising a testing table, a first fixing frame and a second fixing frame are arranged on the testing table, a plurality of first clamping parts are arranged on the first fixing frame at intervals, and a plurality of moving frames are arranged on the second fixing frame. According to the novel tensile property testing instrument for the composite leather, a plurality of leather samples can be subjected to synchronous tensile detection through one-time sample loading, the detection period is greatly shortened, and when the plurality of leather samples are clamped and released, the linkage between the movable clamping blocks is improved through the first driving assembly, so that the detection efficiency is improved. The complexity of repeated operation is reduced, and the detection efficiency of the tensile property of the leather is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of leather production technology, and more specifically, it relates to a novel instrument for testing the tensile properties of composite leather. Background Technology

[0002] Leather, a material widely used in clothing, footwear, and bags, has tensile properties that are crucial indicators of its quality and lifespan. Leather with good tensile properties can better adapt to changes in external forces, thereby improving the durability and comfort of products. Therefore, accurate and efficient testing of leather's tensile properties is particularly important.

[0003] The test requires sampling from multiple areas of the leather to ensure the comprehensiveness and accuracy of the test results. In addition, each sampling area also needs to be sampled in both the warp and weft directions to evaluate the tensile properties of the leather in different directions. This sampling method results in a large number of samples, which increases the workload of the test. Existing testing instruments can usually only test one sample at a time. Therefore, the sample loading and unloading operations need to be repeated during the test, which not only increases the labor intensity of the testers, but also reduces the testing efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a novel instrument for testing the tensile properties of composite leather. This instrument allows for simultaneous tensile testing of multiple leather samples with a single sample loading, significantly shortening the testing cycle. Furthermore, when clamping and releasing multiple leather samples, the first drive component enhances the linkage between the moving clamps, reducing the tedium of repeated operations and significantly improving the testing efficiency of leather tensile properties.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a novel tensile performance testing instrument for composite leather, comprising a testing platform, wherein a first fixed frame and a second fixed frame are provided on the testing platform, a plurality of first clamping parts are spaced apart on the first fixed frame, a plurality of movable frames are provided on the second fixed frame, and each of the movable frames is provided with a second clamping part opposite to the first clamping part, and each movable frame is connected to a linear drive device to stretch the leather clamped by the second clamping part and the first clamping part; the first clamping part includes a fixed clamping block fixed relative to the first fixed frame, and a movable clamping block is provided opposite to the fixed clamping block above the fixed clamping block; the first fixed frame is also provided with a first drive assembly, the output end of the first drive assembly is connected to the plurality of movable clamping blocks to drive the plurality of movable clamping blocks to synchronously move closer to or away from the fixed clamping block; the second clamping part has the same structure as the first clamping part, and each of the movable frames is provided with a second drive assembly, the second drive assembly being used to drive the movable clamping block of the second clamping part to move relative to the fixed clamping block.

[0006] The present invention is further configured such that: the linear drive device includes a first lead screw rotatably mounted on a second fixed frame, the second fixed frame is provided with a motor for driving the first lead screw to rotate, a first moving block is threadedly sleeved on the first lead screw, and the first moving block is fixedly connected to the moving frame.

[0007] The present invention is further configured such that: a first positioning rod is fixedly connected to the second fixed frame, the first positioning rod is parallel to the first lead screw, and a first through hole is provided on the first moving block for the first positioning rod to slide through.

[0008] The present invention is further configured such that: the first driving component includes a second lead screw rotatably mounted on a first fixed frame, and a plurality of second moving blocks are threadedly sleeved on the second lead screw, and the plurality of second moving blocks are respectively fixedly connected to corresponding moving clamp blocks.

[0009] The present invention is further configured such that: each of the second moving blocks is provided with a positioning block, and the first fixed frame is provided with a positioning groove for the positioning block to slide.

[0010] The present invention is further configured such that: the second driving component includes a first wedge block fixedly connected to the movable clamping block, a second wedge block abutting against the first wedge block, and a threaded rod threaded through the movable frame, one end of the threaded rod being rotatably engaged with the first wedge block.

[0011] The present invention is further configured such that: a second positioning rod is provided on the movable frame, and a second through hole is provided on the first wedge for the second positioning rod to slide through.

[0012] The present invention is further configured such that anti-slip pads are provided on the clamping surfaces of both the moving clamping block and the fixed clamping block.

[0013] In summary, this utility model has the following beneficial effects:

[0014] Multiple leather samples can be simultaneously subjected to tensile testing with a single sample loading, greatly shortening the testing cycle. Furthermore, when clamping and releasing multiple leather samples, the linkage between the moving clamps is improved by the first drive component, reducing the tediousness of repeated operations and significantly improving the testing efficiency of leather tensile properties. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of the testing instrument of this utility model;

[0016] Figure 2 This is a rear view schematic diagram of the testing instrument of this utility model;

[0017] Figure 3This is a schematic diagram of the structure of the first and second wedge blocks of this utility model.

[0018] In the diagram: 1. Test bench; 2. First fixed frame; 3. Second fixed frame; 4. First clamping part; 5. Moving frame; 6. Second clamping part; 41. Fixed clamping block; 42. Moving clamping block; 7. First lead screw; 8. First moving block; 9. First positioning rod; 10. Second lead screw; 11. Second moving block; 12. Positioning groove; 13. First wedge; 14. Second wedge; 15. Threaded rod; 16. Second positioning rod; 17. Anti-slip pad. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0020] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "set up / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The present invention will now be described in detail with reference to the accompanying drawings.

[0023] Reference Figures 1-3A novel tensile performance testing instrument for composite leather includes a test platform 1. A first fixed frame 2 and a second fixed frame 3 are fixedly mounted on the test platform 1. The first fixed frame 2 has several first clamping parts 4 spaced apart. The second fixed frame 3 has several movable frames 5, each of which has a second clamping part 6 opposite to the first clamping parts 4. Each movable frame 5 is connected to a linear drive device to stretch the leather clamped by the second clamping parts 6 and the first clamping parts 4. The first clamping part 4 includes a fixed clamping block 41 fixed relative to the first fixed frame 2. A movable clamping block 42 is positioned opposite the fixed clamping block 41 above it. The first fixed frame 2 also has a first drive assembly. The output end of the first drive assembly is connected to the movable clamping blocks 42 to drive them to synchronously move closer to or away from the fixed clamping block 41. The second clamping part 6 has the same structure as the first clamping part 4. Each movable frame 5 has a second drive assembly, which drives the movable clamping block 42 of the second clamping part 6 to move relative to the fixed clamping block 41.

[0024] The linear drive device includes a first lead screw 7 rotatably mounted on a second fixed frame 3. A motor for driving the first lead screw 7 to rotate is fixedly mounted on the second fixed frame 3. A first moving block 8 is threaded onto the first lead screw 7. The first moving block 8 is fixedly connected to the moving frame 5. The first lead screw 7 is driven to rotate by the motor, and the first moving block 8 on the first lead screw 7 moves accordingly, thereby driving the moving frame 5 and the second clamping part 6 to move. The transmission is smooth, ensuring the accuracy of the tensile test.

[0025] The second fixed frame 3 is fixedly connected to the first positioning rod 9, which is parallel to the first lead screw 7. The first moving block 8 is provided with a first through hole for the first positioning rod 9 to slide through. The first positioning rod 9 and the first through hole enhance the stability of the movement of the first moving block 8 and prevent the first moving block 8 from rotating or deviating during the movement, thereby ensuring the smoothness of the stretching process.

[0026] The first drive assembly includes a second lead screw 10 rotatably mounted on the first fixed frame 2. A plurality of second moving blocks 11 are threaded on the second lead screw 10. The plurality of second moving blocks 11 are respectively fixedly connected to the corresponding moving clamping blocks 42. The rotation of the second lead screw 10 drives the plurality of second moving blocks 11 to move synchronously. The second moving blocks 11 then drive the corresponding moving clamping blocks 42 to move, thereby realizing the rapid clamping of one end of the plurality of leather samples.

[0027] Each of the second moving blocks 11 is fixedly provided with a positioning block (not shown in the figure). The first fixed frame 2 is provided with a positioning groove 12 for the positioning block to slide. When the second moving block 11 is driven to move, the positioning block on the second moving block 11 slides in the positioning groove 12 of the first fixed frame 2, which helps to ensure the stability of the movement of the second moving block 11 and avoids deflection of the second lead screw 10, thereby ensuring the clamping stability between the moving clamp block 42 and the fixed clamp block 41.

[0028] The second drive assembly includes a first wedge 13 fixedly connected to the movable clamping block 42, a second wedge 14 abutting against the first wedge 13, and a threaded rod 15 threaded through the movable frame 5. One end of the threaded rod 15 is rotatably engaged with the first wedge 13. By rotating the threaded rod 15, the second wedge 14 moves and pushes the first wedge 13, so that the first wedge 13 drives the movable clamping block 42 to move closer to or away from the fixed clamping block 41, making it easy to achieve clamping and releasing actions.

[0029] A second positioning rod 16 is fixedly provided on the movable frame 5, and a second through hole is provided on the first wedge 13 for the second positioning rod 16 to slide through. The second positioning rod 16 on the movable frame 5 cooperates with the second through hole on the first wedge 13 to prevent the first wedge 13 from deflecting during the movement and improve the reliability of the clamping action.

[0030] Anti-slip pads 17 are attached to the clamping surfaces of both the movable clamping block 42 and the fixed clamping block 41. The anti-slip pads 17 enhance the friction between the movable clamping block 42, the fixed clamping block 41 and the leather sample, thereby further improving the clamping effect.

[0031] Working principle: In use, the operator first places one end of multiple leather samples on the fixed clamping block 41 of the first clamping part 4. Then, through the driving action of the first driving component, several moving clamping blocks 42 move synchronously and approach the corresponding fixed clamping block 41, thereby quickly clamping and fixing one end of multiple leather samples. Then, the other end of the leather sample is placed on the fixed clamping block 41 of the second clamping part 6. The second driving component drives each moving clamping block 42 of the second clamping part 6 to approach the corresponding fixed clamping block 41, completing the fixing of the other end of the leather sample. At this time, all leather samples are firmly clamped. The linear drive device is activated to drive the moving frame 5 and the second clamping part 6 on it to move in a straight line, so that the second clamping part 6 moves away from the first clamping part 4, thereby performing synchronous tensile testing on multiple leather samples. After the tensile test is completed, the samples are removed, and the various dimensional data of the samples after tensile testing are measured and compared with the dimensional data before tensile testing. At the same time, the removed samples can be compared horizontally.

[0032] This invention allows for simultaneous tensile testing of multiple leather samples with a single sample loading, significantly shortening the testing cycle. Furthermore, when clamping and releasing multiple leather samples, the first drive assembly enhances the linkage between the moving clamp blocks 42, reducing the tediousness of repeated operations and significantly improving the testing efficiency of leather tensile properties.

[0033] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A novel instrument for testing the tensile properties of composite leather, characterized in that: The test platform includes a test stand (1), on which a first fixed frame (2) and a second fixed frame (3) are provided. The first fixed frame (2) has a plurality of first clamping parts (4) spaced apart. The second fixed frame (3) has a plurality of movable frames (5). Each of the movable frames (5) has a second clamping part (6) opposite to the first clamping parts (4), and each movable frame (5) is connected to a linear drive device to stretch the leather clamped by the second clamping parts (6) and the first clamping parts (4). The first clamping part (4) includes a clamping part opposite to the first fixed frame (2). 2) A fixed clamping block (41) is provided with a movable clamping block (42) arranged opposite to it above the fixed clamping block (41). A first driving component is also provided on the first fixed frame (2). The output end of the first driving component is connected to several movable clamping blocks (42) to drive several movable clamping blocks (42) to move synchronously closer to or away from the fixed clamping block (41). The second clamping part (6) has the same structure as the first clamping part (4). A second driving component is provided on each of the moving frames (5). The second driving component is used to drive the movable clamping block (42) of the second clamping part (6) to move relative to the fixed clamping block (41).

2. The novel tensile performance testing instrument for composite leather according to claim 1, characterized in that: The linear drive device includes a first lead screw (7) rotatably mounted on a second fixed frame (3), a motor for driving the first lead screw (7) to rotate is provided on the second fixed frame (3), a first moving block (8) is threaded on the first lead screw (7), and the first moving block (8) is fixedly connected to the moving frame (5).

3. The novel tensile performance testing instrument for composite leather according to claim 2, characterized in that: The second fixed frame (3) is fixedly connected to a first positioning rod (9), which is parallel to the first lead screw (7), and the first moving block (8) is provided with a first through hole for the first positioning rod (9) to slide through.

4. The novel tensile performance testing instrument for composite leather according to claim 1, characterized in that: The first drive assembly includes a second lead screw (10) rotatably mounted on a first fixed frame (2), and a plurality of second moving blocks (11) are threadedly sleeved on the second lead screw (10), and the plurality of second moving blocks (11) are respectively fixedly connected to the corresponding moving clamp block (42).

5. The novel tensile performance testing instrument for composite leather according to claim 4, characterized in that: Each of the second moving blocks (11) is provided with a positioning block, and the first fixed frame (2) is provided with a positioning groove (12) for the positioning block to slide.

6. The novel tensile performance testing instrument for composite leather according to claim 1, characterized in that: The second drive assembly includes a first wedge (13) fixedly connected to the movable clamp (42), a second wedge (14) abutting on the first wedge (13), and a threaded rod (15) threaded through the movable frame (5), one end of the threaded rod (15) being rotatably engaged with the first wedge (13).

7. The novel tensile property testing instrument for composite leather according to claim 6, characterized in that: The movable frame (5) is provided with a second positioning rod (16), and the first wedge (13) is provided with a second through hole for the second positioning rod (16) to slide through.

8. The novel tensile property testing instrument for composite leather according to claim 1, characterized in that: Anti-slip pads (17) are provided on the clamping surfaces of both the moving clamp (42) and the fixed clamp (41).

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