Device for testing tensile strength of modified fiber

Abstract

The utility model discloses a tensile strength testing device for modified fibers, which comprises a tensile testing machine, a fixed measuring seat and a movable measuring seat are arranged on the tensile testing machine, an upper clamp is arranged on the movable measuring seat, and a lower clamp is arranged on the fixed measuring seat; the upper clamp comprises an upper clamping seat, an upper winding roller and an upper main shaft are arranged on the upper clamping seat, an upper Y-shaped frame is rotationally connected to the upper main shaft, a first upper arm rod and a first lower arm rod are arranged on the upper Y-shaped frame, a first grab handle is arranged on the upper Y-shaped frame, a first protruding part is arranged on the first upper arm rod, a first groove part is arranged on the upper winding roller, and a first cutter is arranged on the first lower arm rod. A first cutter groove is formed in the upper winding roller, a first movable spring pin is arranged on the first lower arm rod, a first fixed spring pin is arranged on the upper clamping seat, and a first extension spring is connected between the first fixed spring pin and the first movable spring pin; the lower clamp comprises a lower clamping seat. The tensile strength testing device has the characteristics of firmness in clamping and convenience in testing.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and more specifically, it relates to a modified fiber tensile strength testing device. Background Technology

[0002] In the development of modified fibers, the tensile strength of samples needs to be repeatedly tested. Only after meeting the tensile strength requirements can subsequent performance index tests proceed. The fibers have a slender structure, making it difficult to secure both ends. Using only a tensile testing machine equipped with conventional upper and lower clamps for tensile testing can lead to fiber end detachment due to unreliable connections, thus affecting the test's progress and resulting in poor overall performance. Therefore, this invention proposes a modified fiber tensile strength testing device. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a modified fiber tensile strength testing device, which features secure clamping and convenient testing.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: The modified fiber tensile strength testing device involved in this utility model includes a tensile testing machine, a fixed measuring seat and a movable measuring seat above the fixed measuring seat, the movable measuring seat moves up and down relative to the fixed measuring seat, the movable measuring seat is provided with an upper clamp, and the fixed measuring seat is provided with a lower clamp.

[0005] The upper clamp includes an upper clamp seat, on which are provided an upper winding roller and an upper main shaft with their axes extending horizontally. An upper Y-shaped frame is rotatably connected to the upper main shaft. The upper Y-shaped frame is provided with a first upper arm on one side of the upper winding roller and a first lower arm on the other side of the upper winding roller. The upper Y-shaped frame is provided with a first handle. The first upper arm is provided with a first protrusion. The upper winding roller is provided with a first groove matching the first protrusion. The first lower arm is provided with a first cutter. The upper winding roller is provided with a first cutter groove matching the first cutter. The first lower arm is provided with a first movable spring pin. The upper clamp seat is provided with a first fixed spring pin. A first tension spring is connected between the first fixed spring pin and the first movable spring pin. In its natural state, the first protrusion is embedded in the first groove.

[0006] The lower clamp includes a lower clamp seat, on which a lower winding roller and a lower main shaft are provided with their axes extending horizontally. A lower Y-shaped frame is rotatably connected to the lower main shaft. The lower Y-shaped frame has a second upper arm on one side of the lower winding roller and a second lower arm on the other side of the lower winding roller. The lower Y-shaped frame has a second handle. The second upper arm has a second cutter. The lower winding roller has a second cutter groove that matches the second cutter. The second lower arm has a second protrusion. The lower winding roller has a second groove that matches the second protrusion. The second upper arm has a second movable spring pin. The lower clamp seat has a second fixed spring pin. A second tension spring is connected between the second fixed spring pin and the second movable spring pin. In its natural state, the second protrusion is embedded in the second groove.

[0007] The present invention is further configured such that the axis of the upper winding roller is parallel to the axis of the lower winding roller.

[0008] In summary, this utility model has the following beneficial effects:

[0009] 1. One end of the fiber is wound onto the upper winding roller and the other end is wound onto the lower winding roller. The first protrusion embedded in the first groove fixes one end of the fiber, and the second protrusion embedded in the second groove fixes the other end of the fiber, so as to achieve a stable clamping function for the fiber being tested.

[0010] 2. Press down on the first handle until the first cutter cuts into the first groove, cutting the fiber wound on the upper winding roller and separating one end; pull up on the second handle until the second cutter cuts into the second groove, cutting the fiber wound on the lower winding roller and separating the other end, so as to achieve the function of quick disassembly of the fiber being tested. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a schematic diagram illustrating the structure of the upper clamp of this utility model;

[0013] Figure 3 This is a schematic diagram illustrating the structure of the lower clamp of this utility model. Detailed Implementation

[0014] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the patent claims of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0015] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0016] Example 1

[0017] See Figures 1 to 3 As shown, the modified fiber tensile strength testing device involved in this embodiment includes a tensile testing machine (not shown), a fixed measuring seat (not shown) on the tensile testing machine and a movable measuring seat (not shown) above the fixed measuring seat. The movable measuring seat moves up and down relative to the fixed measuring seat. The movable measuring seat is provided with an upper clamp 100 and the fixed measuring seat is provided with a lower clamp 200.

[0018] The upper clamp 100 includes an upper clamping seat 1, on which an upper winding roller 2 and an upper main shaft 3 are provided with their axes extending horizontally. An upper Y-shaped frame is rotatably connected to the upper main shaft 3. The upper Y-shaped frame is provided with a first upper arm 4 on one side of the upper winding roller and a first lower arm 5 on the other side of the upper winding roller. The upper Y-shaped frame is provided with a first handle 6. The first upper arm 4 is provided with a first protrusion 7. The upper winding roller 2 is provided with a first groove 8 that matches the first protrusion. The first lower arm 5 is provided with a first cutter 9. The upper winding roller 2 is provided with a first cutter groove 10 that matches the first cutter. The first lower arm 5 is provided with a first movable spring pin 11. The upper clamping seat 1 is provided with a first fixed spring pin 12. A first tension spring 13 is connected between the first fixed spring pin 12 and the first movable spring pin 11. In its natural state, the first protrusion 7 is embedded in the first groove 8.

[0019] The lower clamp 200 includes a lower clamping seat 14, on which a lower winding roller 15 and a lower main shaft 16 with their axes extending horizontally are provided. A lower Y-shaped frame is rotatably connected to the lower main shaft 16. The lower Y-shaped frame is provided with a second upper arm 17 on one side of the lower winding roller and a second lower arm 18 on the other side of the lower winding roller. The lower Y-shaped frame is provided with a second handle 19. A second cutter 20 is provided on the second upper arm 17. A second cutter groove 21 matching the second cutter is provided on the lower winding roller 15. A second protrusion 22 is provided on the second lower arm 18. A second groove 23 matching the second protrusion is provided on the lower winding roller 15. A second movable spring pin 24 is provided on the second upper arm 17. A second fixed spring pin 25 is provided on the lower clamping seat 14. A second tension spring 26 is connected between the second fixed spring pin 25 and the second movable spring pin 24. In its natural state, the second protrusion 22 is embedded in the second groove 23.

[0020] Furthermore, the axis of the upper winding roller 2 is arranged parallel to the axis of the lower winding roller 15.

[0021] In this embodiment, one end of the fiber to be tested is fixed to the upper clamp 100, and the other end is fixed to the lower clamp 200. Before fixing it to the upper clamp, the first handle 6 is pressed down to separate the first protrusion 7, which is naturally embedded in the first groove 8. Then, one end of the fiber is wound around the upper winding roller 2. Finally, the first handle 6 is released, and under the action of the tension spring, the first protrusion 7 is pressed back into the first groove 8, thus completing the fixing of one end of the fiber. Before fixing it to the lower clamp, the second handle 19 is pulled up to separate the second protrusion 22, which is naturally embedded in the second groove 23. Then, one end of the fiber is wound around the lower winding roller 15. Finally, the second handle 19 is released, and under the action of the tension spring, the second protrusion 22 is pressed back into the second groove 23, thus completing the fixing of the other end of the fiber.

[0022] When it is necessary to separate the wound fiber from the upper winding roller 2, the first handle 6 can be pressed down further until the first cutter cuts into the first cutter groove, cutting the fiber wound on the upper winding roller and separating one end; when it is necessary to separate the wound fiber from the lower winding roller 15, the second handle 19 can be pulled up further until the second cutter cuts into the second cutter groove, cutting the fiber wound on the lower winding roller and separating the other end.

[0023] The modified fiber tensile strength testing device of this utility model achieves a stable clamping function for the tested fiber by winding one end of the fiber onto an upper winding roller and the other end onto a lower winding roller, fixing one end of the fiber with a first protrusion embedded in a first groove and fixing the other end of the fiber with a second protrusion embedded in a second groove; furthermore, by pressing down on the first handle until the first cutter cuts into the first groove, cutting the fiber wound on the upper winding roller, thus separating one end; and by pulling up on the second handle until the second cutter cuts into the second groove, cutting the fiber wound on the lower winding roller, thus separating the other end, the device achieves a quick disassembly function for the tested fiber. The device has complete functions and strong practicality.

[0024] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the actual orientation or positional relationship shown. They are used 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, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the embodiments and according to the specific circumstances.

[0025] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0026] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A modified fiber tensile strength testing device, comprising a tensile testing machine, a fixed measuring seat on the tensile testing machine and a movable measuring seat disposed above the fixed measuring seat, the movable measuring seat moving vertically relative to the fixed measuring seat, characterized in that: The movable measuring seat is provided with an upper clamp, and the fixed measuring seat is provided with a lower clamp. The upper clamp comprises an upper clamp seat, an upper winding roller and an upper spindle with horizontal axis are arranged on the upper clamp seat, an upper Y-shaped frame is rotatably connected to the upper spindle, a first upper arm rod is arranged on one side of the upper winding roller, a first lower arm rod is arranged on the other side of the upper winding roller, a first handle is arranged on the upper Y-shaped frame, a first protruding part is arranged on the first upper arm rod, a first recessed part matched with the first protruding part is arranged on the upper winding roller, a first cutter is arranged on the first lower arm rod, a first cutter groove matched with the first cutter is arranged on the upper winding roller, a first movable spring pin is arranged on the first lower arm rod, a first fixed spring pin is arranged on the upper clamp seat, a first tension spring is connected between the first fixed spring pin and the first movable spring pin, and the first protruding part is embedded in the first recessed part in a natural state. The lower clamp comprises a lower clamp seat, a lower winding roller and a lower spindle with horizontal axis are arranged on the lower clamp seat, a lower Y-shaped frame is rotatably connected to the lower spindle, a second upper arm rod is arranged on one side of the lower winding roller, a second lower arm rod is arranged on the other side of the lower winding roller, a second handle is arranged on the lower Y-shaped frame, a second cutter is arranged on the second upper arm rod, a second cutter groove matched with the second cutter is arranged on the lower winding roller, a second protruding part is arranged on the second lower arm rod, a second recessed part matched with the second protruding part is arranged on the lower winding roller, a second movable spring pin is arranged on the second upper arm rod, a second fixed spring pin is arranged on the lower clamp seat, a second tension spring is connected between the second fixed spring pin and the second movable spring pin, and the second protruding part is embedded in the second recessed part in a natural state.

2. The modified fiber tensile strength testing device of claim 1, wherein: The axis of the upper winding roller is arranged in parallel with the axis of the lower winding roller.

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