Online twisting device for yarn tensile testing

Abstract

This application discloses an online twisting device for yarn tensile testing, comprising a yarn tensile testing machine and a twisting mechanism. The yarn tensile testing machine includes a frame and upper and lower clamps symmetrically arranged at the upper and lower ends of the frame. The twisting mechanism includes a wire clamp and a rotating element. The wire clamp is located directly below and close to the lower clamp. The wire clamp is connected to the rotating end of the rotating element in a drivable and directional rotatable manner. The rotating element is mounted on the frame. The online twisting device for yarn tensile testing provided by this application can automatically twist the yarn during the yarn tensile testing process and precisely control the number of twists, thereby reducing labor intensity and ensuring the accuracy of yarn tensile test data.

Description

Technical Field

[0001] This utility model relates to the field of textile testing technology, and in particular to an online twisting device for yarn tensile testing. Background Technology

[0002] The mechanical properties of yarn, especially tensile strength and elongation at break, are key indicators for evaluating its quality. Existing standard yarn tensile testing machines (such as Instron) typically only include two clamps, an upper and a lower clamp, and during testing, the yarn is directly clamped between the two clamps for tensile testing.

[0003] However, yarn performance is closely related to its twist, which refers to the number of twists the yarn makes within a specified length before untwisting. In yarn quality inspection, it is often necessary to test the breaking strength of the yarn at a specific twist.

[0004] The current operating method relies entirely on manual labor: the testing personnel first manually twist the yarn, and after the count reaches the target, they then clamp it onto the tensile testing machine for testing. This traditional method has obvious drawbacks: First, manual counting is prone to errors, affecting the accuracy of the test results; second, for testing a large number of samples, manual twisting is labor-intensive and inefficient; finally, during the process of transferring the twisted yarn from the twist meter to the tensile testing machine, the yarn twist may change due to improper operation, which in turn affects the accuracy of the test.

[0005] Therefore, there is an urgent need for a device that can be integrated into a tensile testing machine to achieve automatic and precise twisting. Utility Model Content

[0006] This application provides an online twisting device for yarn tensile testing, which can automatically twist the yarn during the yarn tensile testing process and accurately control the number of twists, thereby reducing labor intensity and ensuring the accuracy of yarn tensile test data.

[0007] This application provides an online twisting device for yarn tensile testing, including a yarn tensile testing machine and a twisting mechanism. The yarn tensile testing machine includes a frame and an upper clamp and a lower clamp symmetrically arranged at the upper and lower ends of the frame. The twisting mechanism includes a wire clamp and a rotating element. The wire clamp is located directly below and close to the lower clamp. The wire clamp is connected to the rotating end of the rotating element in a drivable and directionally rotatable manner. The rotating element is mounted on the frame.

[0008] In one possible implementation, the frame includes a base, side fixing seats vertically and symmetrically arranged on both sides of the top of the base, and an upper mounting plate and a lower mounting plate horizontally connected between the two side fixing seats, wherein the rotating element is fixed to the top of the base, the upper clamp is fixed to the bottom of the upper mounting plate, the lower clamp is fixed to the top of the lower mounting plate, and the lower mounting plate is provided with a through hole for the yarn to pass through.

[0009] In one possible implementation, the top of the base is further provided with a support column for supporting the lower mounting plate.

[0010] In one possible implementation, there are two support columns, which are symmetrically distributed on the left and right sides of the through hole.

[0011] In one possible implementation, the side mounting bases on both sides are provided with multiple slots horizontally symmetrically on opposite sides, and the multiple slots are evenly distributed in the vertical direction. The two ends of the lower mounting plate are provided with engagement protrusions that cooperate with the slots.

[0012] In one possible implementation, the side fixing seat includes a main body and fixed side plates symmetrically connected to the front and rear sides of the main body. The fixed side plates are detachably connected to the main body by bolts and extend to the slot to seal the slot.

[0013] In one possible implementation, the rotating element is a rotary motor, and the rotating element is electrically connected to a controller, which is fixed to the base.

[0014] Beneficial effects: Compared with the prior art, the online twisting device for yarn tensile testing provided in this application integrates the yarn clamp and rotating element on the yarn tensile testing machine. When the yarn is subjected to tensile testing, the top end of the yarn is first fixed to the upper clamp, and then the bottom end of the yarn passes through the lower clamp and the through hole and is fixed by the yarn clamp. The rotating element drives the yarn clamp to rotate a predetermined number of turns, and then the lower clamp clamps and fixes the bottom end of the yarn. The tensile testing machine is started to perform tensile testing on the twisted yarn until the yarn breaks, thus completing the tensile test of the yarn. This can greatly reduce the labor intensity of the operator, improve the efficiency of tensile testing, and at the same time, it can accurately control the twist of the yarn, thereby ensuring the accuracy of the yarn tensile test data.

[0015] These and other objects, features and advantages of this utility model will be fully realized through the following detailed description. Attached Figure Description

[0016] Figure 1 A schematic diagram of the online twisting device for yarn tensile testing according to this application is shown.

[0017] Figure 2 A schematic diagram of the twisting mechanism in this application is shown. Detailed Implementation

[0018] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0019] Those skilled in the art should understand that, in the disclosure of this specification, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," 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, the above terms should not be construed as limitations on this utility model.

[0020] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0021] refer to Figure 1 and Figure 2 This application provides an online twisting device for yarn tensile testing, including a yarn tensile testing machine and a twisting mechanism. The yarn tensile testing machine includes a frame 10 and an upper clamp 11 and a lower clamp 12 symmetrically arranged at the upper and lower ends of the frame 10. The twisting mechanism 20 includes a yarn clamp 21 and a rotating element 22, wherein the yarn clamp 21 is located directly below and close to the lower clamp 12, and is used to clamp and fix the bottom end of the yarn 30. The yarn clamp 21 is connected to the rotating end of the rotating element 22 in a drivable and directionally rotatable manner, and the rotating element 22 is mounted on the frame 10.

[0022] The yarn tensile testing process is roughly as follows: First, the yarn 30 is passed through the upper clamp 11, the lower clamp 12 and the clamp 21 from top to bottom, and the yarn 30 extends in a vertical state. Twisting is performed by closing the upper clamp 11 to clamp the top end of the yarn 30; closing the yarn clamp 21 to clamp the bottom end of the yarn 30. At this time, the lower clamp 12 remains open and does not clamp the fixed yarn 30; the yarn clamp 21 is driven to rotate a predetermined number of turns by the rotating element 22, thereby twisting the entire section of yarn between the upper clamp 11 and the yarn clamp 21. After twisting is completed, the rotating element 22 stops working. Stretch, close the lower clamp 12 to clamp and fix the lower end of the yarn 30, start the yarn tensile testing machine, and perform a tensile test on the twisted yarn 30 according to the standard test procedure until the yarn breaks. The testing machine automatically records the tensile curve, strength, and elongation data; After resetting and completing the test, clean up any broken yarn, reset all components, and prepare for the next test.

[0023] Since the yarn clamp 21 is close to the lower clamp 12, after the yarn clamp 21 clamps the yarn 30 and rotates it a predetermined number of times, the overall twist of the yarn 30 has been formed. At this time, the yarn 30 can be directly clamped by the lower clamp 12 for tensile testing without affecting the test accuracy of the yarn 30.

[0024] Therefore, the online twisting device for yarn tensile testing provided in this application achieves online twisting through the cooperation of the yarn clamp 21 and the rotating element 22, which can greatly reduce the labor intensity of operators and improve the efficiency of yarn tensile testing. At the same time, the number of rotations of the yarn 30 during the twisting process can be automatically controlled, thereby ensuring the accuracy of the yarn tensile testing.

[0025] In one embodiment, the frame 10 includes a base 110, side mounting seats 120 vertically and symmetrically arranged on both sides of the top of the base 110, and an upper mounting plate 131 and a lower mounting plate 132 horizontally connected between the two side mounting seats 120. The rotating element 22 is fixed to the top of the base 110, the upper clamp 11 is fixed to the bottom of the upper mounting plate 131, the lower clamp 12 is fixed to the top of the lower mounting plate 132, and the lower mounting plate 132 is provided with a through hole 101 for the yarn 30 to pass through.

[0026] In one embodiment, the top of the base 110 is further provided with a support column 133 for supporting the lower mounting plate 132, which improves the stability of the lower mounting plate 132 and thus ensures the accuracy of the yarn stretch test.

[0027] More preferably, there are two support columns 133, and the two support columns 133 are symmetrically distributed on the left and right sides of the through hole 101, thereby applying a more uniform support force to the lower mounting plate 132 and further improving the stability of the lower mounting plate 132.

[0028] In one embodiment, the side fixing seats 120 on both sides are provided with a plurality of slots 102 symmetrically on opposite sides, and the plurality of slots 102 are evenly distributed in the vertical direction. At the same time, the two ends of the lower mounting plate 132 are provided with engaging protrusions (not shown in the figure) that cooperate with the slots 102. This facilitates the quick fixing of the lower mounting plate 132 and ensures the levelness of the lower mounting plate 132, thereby ensuring the accuracy of the yarn tensile test.

[0029] More preferably, the side fixing seat 120 includes a main seat body 121 and fixed side plates 122 symmetrically connected to the front and rear sides of the main seat body 121. The fixed side plates 122 are detachably connected to the main seat body 121 by bolts. At the same time, the fixed side plates 122 extend to the slot 102 to block the slot 102. In this way, when performing yarn tensile testing, the height position of the lower mounting plate 132 can be flexibly adjusted as needed. After adjustment, the lower mounting plate 132 is fixed by the fixed side plates 122, thereby improving the applicability of the online twisting device for yarn tensile testing and making it more convenient to use.

[0030] In one embodiment, the rotating element 22 is a rotary motor, and the rotating element 22 is electrically connected to a controller 23, and the controller 23 is fixed on the base 110. The rotary motor 22 can be a servo motor or a geared motor. The rotary motor being controlled by the controller 23 to start, stop, and rotate in the forward direction are all existing technologies and will not be described in detail here.

[0031] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from the stated principles.

Claims

1. An online twisting device for yarn tensile testing, characterized in that, The device includes a yarn tensile testing machine and a twisting mechanism. The yarn tensile testing machine includes a frame and an upper clamp and a lower clamp symmetrically arranged at the upper and lower ends of the frame. The twisting mechanism includes a yarn clamp and a rotating element. The yarn clamp is located directly below and close to the lower clamp. The yarn clamp is connected to the rotating end of the rotating element in a drivable and directional rotatable manner. The rotating element is mounted on the frame.

2. The online twisting device for yarn tensile testing as described in claim 1, characterized in that, The frame includes a base, side fixing seats vertically and symmetrically arranged on both sides of the top of the base, and an upper mounting plate and a lower mounting plate horizontally connected between the two side fixing seats. The rotating element is fixed to the top of the base, the upper clamp is fixed to the bottom of the upper mounting plate, the lower clamp is fixed to the top of the lower mounting plate, and the lower mounting plate is provided with a through hole for the yarn to pass through.

3. The online twisting device for yarn tensile testing as described in claim 2, characterized in that, The base is also provided with a support column at the top for supporting the lower mounting plate.

4. The online twisting device for yarn tensile testing as described in claim 3, characterized in that, There are two support columns, which are symmetrically distributed on the left and right sides of the through hole.

5. The online twisting device for yarn tensile testing as described in claim 2, characterized in that, The side mounting bases on both sides are provided with multiple slots horizontally symmetrically on opposite sides. The multiple slots are evenly distributed in the vertical direction. The two ends of the lower mounting plate are provided with engagement protrusions that cooperate with the slots.

6. The online twisting device for yarn tensile testing as described in claim 5, characterized in that, The side fixing seat includes a main body and fixed side plates symmetrically connected to the front and rear sides of the main body. The fixed side plates are detachably connected to the main body by bolts and extend to the slot to seal the slot.

7. The online twisting device for yarn tensile testing as described in claim 2, characterized in that, The rotating element is a rotary motor, and the rotating element is electrically connected to a controller, which is fixed on the base.

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