Tensile testing device for spinning yarn

Abstract

The utility model relates to the technical field of spinning yarn, in particular to a spinning yarn tensile testing device which comprises a workbench, a sliding groove is formed in the workbench, a lead screw is rotatably installed in the sliding groove, a linkage block is arranged on the outer side of the lead screw in a threaded and sleeved mode, a movable frame is fixedly installed at the upper end of the linkage block, and a clamping groove is formed in the movable frame. A first supporting rod is fixedly mounted in the movable frame, a first bolting piece is fixedly mounted in the first supporting rod, a mounting plate is fixedly mounted on the upper surface of the workbench, connecting frames movably penetrate through the interior of the mounting plate, and a second supporting rod is fixedly mounted between the connecting frames; the tensile testing device for the spun yarns can be used for detecting the tensile capacity of the yarns with different lengths, and is worthy of popularization.

Description

Technical Field

[0001] This utility model relates to the field of spinning yarn technology, and in particular to a spinning yarn tensile strength testing device. Background Technology

[0002] Yarn is a textile product made from various textile fibers processed into a certain fineness for use in weaving, rope making, thread making, knitting, and embroidery. During the production process, the tensile strength of yarn needs to be tested, typically based on its maximum elongation. However, when testing yarn with testing equipment, it is generally difficult to measure the maximum elongation of yarns of different lengths, affecting the test results. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies that make it inconvenient to measure the maximum tensile length of yarns of different lengths, and to propose a yarn tensile strength testing device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] Design a yarn tensile strength testing device, including a worktable with a groove inside. A lead screw is rotatably mounted inside the groove. A linkage block is threaded onto the outside of the lead screw. A movable frame is fixedly mounted on the upper end of the linkage block. A first support rod is fixedly mounted inside the movable frame. A first bolt is fixedly mounted inside the first support rod. A mounting plate is fixedly mounted on the upper surface of the worktable. A connecting frame is movably inserted through the mounting plate. A second support rod is fixedly mounted between the connecting frames. A second bolt is fixedly mounted inside the second support rod. A screw is threadedly connected to the upper end of the mounting plate. The lower end of the screw extends through the mounting plate and contacts the connecting frame.

[0006] Preferably, at least two first bolts are provided along the length of the first support rod, and the first bolts and the second bolts have the same internal structure, the same number, and are arranged in a relatively aligned manner.

[0007] Preferably, the first bolted component includes a fixing block, and the outer surface of the fixing block has a receiving groove.

[0008] Preferably, a protective pad is fixedly installed on the surface of the receiving groove.

[0009] Preferably, the first support rod and the second support rod are parallel to each other and have the same height.

[0010] Preferably, the lead screw is parallel to the connecting frame and perpendicular to the first support rod.

[0011] Preferably, scale lines are engraved on the upper surface of the worktable, one side of the slide groove, and the upper surface of the connecting frame.

[0012] The present invention provides a yarn tensile strength testing device with the following advantages: During operation, the device can detect the maximum tensile length of yarns of different lengths by adjusting the position of the connecting frame. The yarn is connected by the first and second fasteners. The rotation of the screw drives the movable frame to move through the linkage block. The movement of the movable frame can tighten the yarn. By reading the scale corresponding to the yarn breakage, the tensile strength of the yarn can be understood. The device can also pull two or more yarns simultaneously, allowing for comparison of their tensile strength. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a yarn tensile strength testing device proposed in this utility model;

[0014] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure at point AA;

[0015] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at point BB;

[0016] Figure 4 This is a schematic diagram of the structure of the first support rod and the first bolted member in a yarn tensile strength testing device proposed in this utility model.

[0017] In the diagram: 1. Workbench; 2. Slide groove; 3. Lead screw; 4. Linkage block; 5. Movable frame; 6. First support rod; 7. First bolted connector; 71. Fixing block; 72. Receiving groove; 73. Protective pad; 8. Mounting plate; 9. Connecting frame; 10. Second support rod; 11. Second bolted connector; 12. Screw; 13. Scale line. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example 1

[0020] Reference Figure 1-4A yarn tensile strength testing device includes a workbench 1, a slide groove 2 inside the workbench 1, a lead screw 3 rotatably mounted inside the slide groove 2, the end of the lead screw 3 being fixedly connected to an external motor, starting the motor can drive the lead screw 3 to rotate, a linkage block 4 is threaded on the outside of the lead screw 3, the rotation of the lead screw 3 can drive the linkage block 4 to move, a movable frame 5 is fixedly mounted on the upper end of the linkage block 4, the movement of the linkage block 4 can drive the movable frame 5 to move, a first support rod 6 is fixedly mounted inside the movable frame 5, the lead screw 3 and the first support rod 6 are perpendicular to each other, a first fastener 7 is fixedly mounted inside the first support rod 6, the movement of the movable frame 5 can drive the first fastener 7 to move through the first support rod 6, the first fastener 7 is used to fasten one end of the yarn.

[0021] A mounting plate 8 is fixedly mounted on the upper surface of the workbench 1. A connecting frame 9 is movably inserted through the mounting plate 8, allowing the connecting frame 9 to slide within the mounting plate 8 and its position to be adjusted as needed. A lead screw 3 is parallel to the connecting frame 9, and a second support rod 10 is fixedly mounted between the connecting frames 9. The first support rod 6 and the second support rod 10 are parallel to each other and have the same height. A second fastener 11 is fixedly mounted inside the second support rod 10, used to fasten the other end of the yarn. Movement of the connecting frame 9 can cause the second fastener 11 to move via the second support rod 10. A screw 12 is threadedly connected to the upper end of the mounting plate 8, with its lower end extending through the mounting plate 8 and contacting the connecting frame 9. Rotating the screw 12 can adjust its height, thus fixing the position of the mounting plate 8. When the end of the screw 12 disengages from the mounting plate 8, the position of the mounting plate 8 can be moved.

[0022] At least two first fasteners 7 are provided along the length of the first support rod 6. The first fasteners 7 and the second fasteners 11 have the same internal structure, the same number, and are arranged in a relatively aligned position. The first fasteners 7 and the second fasteners 11 are aligned with each other, which can fasten multiple yarns at the same time, pull multiple yarns at the same time, and compare and test the tensile strength of different yarns.

[0023] The first fastener 7 includes a fixing block 71, with a receiving groove 72 on its outer surface. The receiving groove 72 is used to fasten yarn, and it restricts the position of the yarn, preventing slippage. One end of a yarn is located in the receiving groove 72 of the first fastener 7, and the other end is located in the receiving groove 72 of the second fastener 11. The receiving grooves 72 on both sides are aligned to ensure that the position of the yarn remains unchanged, and the positions of the two ends of the yarn will not shift during pulling. A protective pad 73, made of rubber, is fixedly installed on the surface of the receiving groove 72. The protective pad 73 prevents wear between the yarn and the inner wall of the receiving groove 72, thus preventing any impact on the test results of the yarn's tensile strength.

[0024] Scale lines 13 are engraved on the upper surface of the workbench 1, one side of the slide 2, and the upper surface of the connecting frame 9. The scale line 13 on the side of the slide 2 is used to indicate the distance the movable frame 5 moves. The magnitude of the change in the distance of the movable frame 5 indicates the distance the yarn is pulled. The scale line on the connecting frame 9 is used to indicate the distance the connecting frame 9 moves. The magnitude of the distance of the connecting frame 9 indicates the initial length of the pulled yarn. During testing, the distance the movable frame 5 moves is only used to indicate the distance the yarn is pulled, and the distance the connecting frame 9 moves is only used to indicate the initial length of the yarn being tested. The adjustments of the movable frame 5 and the connecting frame 9 are independent of each other, which can accurately distinguish the distance the yarn is pulled and the initial length of the yarn.

[0025] Before testing, adjust the position of the movable frame 5 to the far left of the slide 2, so as to attach... Figure 1 The following steps illustrate the process: First, tie one end of the yarn to the first fastener 7. Then, adjust the distance between the second fastener 11 and the first fastener 7 using the movable connecting frame 9. The specific distance can be adjusted according to specific needs. Next, tie the other end of the yarn to the second fastener 11, ensuring the yarn remains taut and does not bend. Then, start the motor to rotate the lead screw 3. The rotation of the lead screw 3 drives the movable frame 5 to move to the right via the linkage block 4. The movement of the movable frame 5 drives the first fastener 7 to move via the first support rod 6. The movement of the first fastener 7 pulls on one end of the yarn, tautning it. When the yarn breaks, the lead screw 3 stops rotating. The distance the movable frame 5 moves at this point is the longest distance the yarn has been stretched, allowing us to understand the yarn's tensile strength.

[0026] In this test, if the yarn suddenly breaks while the lead screw 3 is rotating and driving the movable frame 5 to move continuously, there might not be enough time to immediately shut off the motor and stop the lead screw 3. Therefore, to avoid this, the motor can drive the lead screw 3 to rotate, allowing the movable frame 5 to move one unit length at a time. If the yarn breaks while the movable frame 5 is moving within a certain unit length, the motor can be shut off immediately to stop the movement of the movable frame 5, resulting in more accurate test results. Furthermore, two or more yarns can be connected by attaching them to the first fastener 7 and the second fastener 11, allowing for simultaneous pulling of two or more yarns and comparison of their tensile strength.

[0027] Working principle: During operation, the yarn tensile strength testing device first attaches the yarn to the first fastener 7. The position of the connecting frame 9 is adjusted according to the length of the yarn to be tested. Then, the yarn is straightened and attached to the second fastener 11. The motor is started, driving the lead screw 3 to rotate. The rotation of the lead screw 3 drives the linkage block 4 to move, which in turn drives the movable frame 5 to move. The movement of the movable frame 5, via the first support rod 6, drives the first fastener 7 to move. The movement of the first fastener 7 causes one end of the yarn to move, thus tightening the yarn. When the yarn breaks, the motor is turned off, stopping the rotation of the lead screw 3. The position of the movable frame 5 is fixed. At this point, the corresponding scale of the movable frame 5 is read to understand the maximum tensile distance of the yarn, thereby understanding the yarn's tensile strength. It can also pull two or more yarns simultaneously, allowing for comparison of their tensile strength. The yarn that breaks first has a lower tensile strength than the yarn that breaks later.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A yarn tensile strength testing device, comprising a worktable (1), characterized in that, The workbench (1) has a sliding groove (2) inside, and a lead screw (3) is rotatably installed inside the sliding groove (2). A linkage block (4) is threaded on the outside of the lead screw (3). A movable frame (5) is fixedly installed on the upper end of the linkage block (4). A first support rod (6) is fixedly installed inside the movable frame (5). A first bolt (7) is fixedly installed inside the first support rod (6). An installation plate (8) is fixedly installed on the upper surface of the workbench (1). A connecting frame (9) is movably passed through the installation plate (8). A second support rod (10) is fixedly installed between the connecting frames (9). A second bolt (11) is fixedly installed inside the second support rod (10). A screw (12) is threadedly connected to the upper end of the installation plate (8). The lower end of the screw (12) extends through into the installation plate (8) and contacts the connecting frame (9).

2. The yarn tensile strength testing device according to claim 1, characterized in that, At least two first bolted members (7) are provided along the length of the first support rod (6). The first bolted members (7) and the second bolted members (11) have the same internal structure, the same number, and are arranged in a relatively aligned position.

3. The yarn tensile strength testing device according to claim 2, characterized in that, The first bolted member (7) includes a fixing block (71), and the outer surface of the fixing block (71) is provided with a receiving groove (72).

4. The yarn tensile strength testing device according to claim 3, characterized in that, A protective pad (73) is fixedly installed on the surface of the receiving groove (72).

5. The yarn tensile strength testing device according to claim 1, characterized in that, The first support rod (6) and the second support rod (10) are parallel to each other and have the same height.

6. The yarn tensile strength testing device according to claim 1, characterized in that, The lead screw (3) is parallel to the connecting frame (9), and the lead screw (3) is perpendicular to the first support rod (6).

7. The yarn tensile strength testing device according to claim 1, characterized in that, The workbench (1) has scale lines (13) engraved on the upper surface, one side of the slide (2), and the upper surface of the connecting frame (9).

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