Yarn strength tester

Abstract

The utility model provides a yarn strength tester which comprises a test cabinet, a lead screw rotating through a driving device is arranged in the test cabinet in the vertical direction, a positioning rod is vertically fixed in the test cabinet, a transverse rod is in threaded connection with the lead screw, the transverse rod is in sliding connection with the positioning rod, a plurality of sliding grooves are vertically formed in the test cabinet, and lower clamping devices fixed to the transverse rod are slidably connected in the sliding grooves. An upper clamping device is installed above the sliding grooves, and guide wheels used for enabling yarn to be folded back in a snakelike mode are arranged at the upper end and the lower end between every two adjacent sliding grooves in a staggered mode. According to the yarn strength tester, yarns can be folded back in a snakelike mode along the multiple sliding grooves through the guide wheels, and the yarns are fixed between the lower clamping devices and the upper clamping devices corresponding to the sliding grooves. According to the yarn detection device, the lower clamping device is moved downwards, the yarn section clamped and fixed between the lower clamping device and the upper clamping device is stretched, multiple sections of yarn can be detected at the same time, the detection result is averaged, the detection result is more accurate, the yarn does not need to be clamped and fixed repeatedly, the operation steps are reduced, and the test efficiency is improved.

Description

Technical Field

[0001] The present application relates to a yarn tensile strength mechanical property testing technology, and in particular to a yarn strength tester. Background Art

[0002] The yarn strength tester is an instrument used to measure the tensile mechanical properties of yarn. It consists of upper and lower clamps, a tensile drive mechanism, a force measuring device, and data display, collection, and processing equipment. A length of yarn is clamped between the upper and lower clamps. The tensile drive mechanism moves the lower clamp, stretching the yarn until it breaks. During this process, the force measuring device monitors the yarn's tensile strength and records it through the data collection and processing equipment.

[0003] Existing yarn strength testers can only test one section of yarn at a time. To ensure the accuracy of the test results and avoid damage to the yarn during transportation, multiple sections of yarn are usually required to be tested.

[0004] Existing yarn strength testers require manual operation to repeatedly clamp and fix the yarn to complete the test of multiple sections of yarn. The steps are cumbersome and complicated, which also leads to long testing time and low efficiency. Utility Model Content

[0005] The present application provides a yarn strength tester to solve the problem that the existing yarn strength tester can only test one section of yarn at a time and is complicated and inefficient to operate when repeatedly testing multiple sections of yarn.

[0006] The present application provides a yarn strength tester, including a test cabinet, wherein a lead screw rotated by a driving device is provided in the vertical direction of the test cabinet, and a positioning rod is vertically fixed thereto, a cross rod is threadedly connected to the lead screw, and the cross rod is slidably connected to the positioning rod, and a plurality of slide grooves are vertically provided on the test cabinet, a lower clamp fixed to the cross rod is slidably connected in the slide groove, an upper clamp is installed above the slide groove, and guide wheels for making the yarn serpentine are staggered at the upper and lower ends between adjacent slide grooves.

[0007] Optionally, the test cabinet is provided with multiple sets of lead screws, cross bars and positioning bars to form a lifting mechanism, and the lower clamp in each slide groove is respectively fixed to the cross bars of each set of lifting mechanisms.

[0008] Optionally, a turntable is rotatably connected to the top surface of the test cabinet, and a plurality of rotating shafts arranged in a ring are vertically fixed on the turntable, and the rotating shafts are sleeved with rotatably connected bobbins.

[0009] Optionally, a counterweight is fixed on the crossbar to enable it to rise and fall smoothly.

[0010] Optionally, a guide ring is provided above the upper clamp at the end of the yarn extending upward.

[0011] Optionally, a collecting box is provided below the end of the yarn extending downward, a vacuum cleaner is installed on the side end of the collecting box, and the collecting box is provided with a box cover that can be opened upward.

[0012] Compared with the prior art, the yarn strength tester provided by this application has the following advantages:

[0013] The guide wheel allows the yarn to snake back along multiple chutes and be fixed between the lower and upper clamps corresponding to each chute. The drive device rotates the lead screw, which causes the crossbar to move the lower clamp downward, stretching the yarn segment clamped between the lower and upper clamps while simultaneously testing the strength of each yarn segment.

[0014] By securing the yarn in a serpentine shape between the lower and upper clamps corresponding to the chute, multiple sections of yarn can be tested simultaneously, and the average of the test results can be taken to achieve more accurate test results. Furthermore, there is no need to repeatedly clamp and secure the yarn, which reduces the number of steps required and improves testing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 A front view of a yarn strength tester provided in one embodiment of the present application;

[0017] Figure 2 A yarn strength tester provided in one embodiment of the present application Figure 1 sectional view of

[0018] Figure 3 A yarn strength tester provided in one embodiment of the present application Figure 1 A top view of

[0019] Figure 4 A schematic diagram of multiple lifting mechanisms of a yarn strength tester provided in one embodiment of the present application.

[0020] Description of reference numerals:

[0021] Test cabinet 1; drive device 2; screw 3; cross bar 4; positioning rod 5; slide 6; lower clamp 7; upper clamp 8; guide wheel 9; bobbin 10; turntable 11; counterweight 12; guide ring 13; collection box 14; dust collector 15; box cover 16. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application are clearly and completely described below. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts also fall within the scope of protection of this application.

[0023] like Figures 1-4 As shown, an embodiment of the present application provides a yarn strength tester, including a test cabinet 1, a screw 3 rotated by a driving device 2 is provided vertically in the test cabinet 1, and a positioning rod 5 is vertically fixed, a cross bar 4 is threadedly connected to the screw 3, and the cross bar 4 is slidably connected to the positioning rod 5, and a plurality of slide grooves 6 are vertically provided on the test cabinet 1, a lower clamp 7 fixed to the cross bar 4 is slidably connected in the slide groove 6, an upper clamp 8 is installed above the slide groove 6, and guide wheels 9 for making the yarn serpentine are staggered at the upper and lower ends of adjacent slide grooves 6.

[0024] During use, the yarn is clamped and secured between the upper and lower clamps 8 and 7 by guide wheels 9 along a serpentine path. Drive unit 2 rotates screw 3, driving crossbar 4 to slide up and down along positioning rod 5. Lower clamp 7 is secured to crossbar 4 through slot 6. After the yarn is clamped and secured, downward movement of crossbar 4 pulls lower clamp 7 downward, stretching the yarn. This allows the strength of the yarn segment clamped between upper and lower clamps 8 and 7 to be tested.

[0025] In this embodiment, the yarn is serpentine-shaped along multiple chutes 6 by means of a guide wheel 9 and fixed between the lower clamp 7 and upper clamp 8 corresponding to each chute 6. The drive device 2 rotates the lead screw 3 to move the crossbar 4 downward toward the lower clamp 7, thereby stretching the yarn segment clamped between the lower clamp 7 and the upper clamp 8, and simultaneously testing the strength of each yarn segment.

[0026] By fixing the yarn in a serpentine shape between the lower clamp 7 and the upper clamp 8 corresponding to the chute 6, multiple sections of yarn can be tested simultaneously, and the test results can be averaged to make the test results more accurate. In addition, there is no need to repeatedly clamp and fix the yarn, which reduces the operation steps and improves testing efficiency.

[0027] In a possible implementation, the test cabinet 1 is provided with multiple sets of lead screws 3, cross bars 4 and positioning rods 5 to form a lifting mechanism, and the lower clamp 7 in each of the slide slots 6 is respectively fixed to the cross bars 4 of each set of lifting mechanisms.

[0028] Each lifting mechanism independently controls the lifting of the lower clamp 7 in the chute 6, and can perform a tensile test on each section of yarn independently, making the test process flexible and easy to operate.

[0029] In a possible implementation, a turntable 11 is rotatably connected to the top surface of the test cabinet 1 , and a plurality of rotating shafts arranged in a ring are vertically fixed on the turntable 11 , and the rotating shafts are sleeved with rotatably connected bobbins 10 .

[0030] A plurality of bobbins 10 are plugged into the rotating shaft of the turntable 11. The corresponding bobbin 10 can be selected by rotating the turntable 11, which facilitates the testing operation and saves the time of changing the thread.

[0031] In a possible implementation, a counterweight 12 is fixed to the crossbar 4 to enable it to rise and fall smoothly.

[0032] The lower clamps 7 in the multiple chutes 6 are easily shaken when they are lifted and lowered by a cross bar 4. The counterweights 12 can balance the cross bars 4 at both ends of the lead screw 3, thereby achieving a smooth lifting effect.

[0033] In a possible implementation, a guide ring 13 is provided above the upper clamper 8 at the end where the yarn extends upward.

[0034] The guide ring 13 is used to limit the yarn extending downward from the upper bobbin 10 into the upper clamper 8, determine the starting position of the yarn, and prevent the yarn from deflecting during the pulling process.

[0035] In a possible implementation, a collecting box 14 is provided below one end of the yarn extending downward, a dust collector 15 is installed at the side end of the collecting box 14, and a box cover 16 that can be opened upward is provided on the collecting box 14.

[0036] After opening the box cover 16 , the upper end opening is convenient for throwing and collecting the broken wires after the test. The dust collector 15 can generate an inward airflow, and the broken wires are thrown into the opening, so that the broken wires can smoothly enter the collection box 14 .

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A yarn strength tester, comprising a test cabinet (1), wherein a lead screw (3) is provided vertically in the test cabinet (1) and is rotated by a driving device (2), and a positioning rod (5) is vertically fixed thereto, a cross rod (4) is threadedly connected to the lead screw (3), and the cross rod (4) is slidably connected to the positioning rod (5), characterized in that: The test cabinet (1) is vertically provided with a plurality of slide grooves (6), wherein a lower clamp (7) fixed to a cross bar (4) is slidably connected in the slide groove (6), and an upper clamp (8) is installed above the slide groove (6). Guide wheels (9) for making the yarn serpentine-shaped folding are staggered at the upper and lower ends between adjacent slide grooves (6).

2. The yarn strength tester according to claim 1, characterized in that: The test cabinet (1) is provided with a plurality of groups of lead screws (3), cross bars (4) and positioning bars (5) to form a lifting mechanism, and the lower clamp (7) in each of the slide grooves (6) is respectively fixed to the cross bars (4) of each group of the lifting mechanism.

3. The yarn strength tester according to claim 1 or 2, characterized in that: A turntable (11) is rotatably connected to the top surface of the test cabinet (1), and a plurality of rotating shafts arranged in a ring are vertically fixed on the turntable (11), and a rotatably connected bobbin (10) is sleeved on the rotating shaft.

4. The yarn strength tester according to claim 1, characterized in that: A counterweight (12) is fixed on the crossbar (4) for enabling the crossbar to be lifted and lowered smoothly.

5. The yarn strength tester according to claim 3, characterized in that: A guide ring (13) is provided above the upper clamp (8) at the end where the yarn extends upward.

6. The yarn strength tester according to claim 1 or 2, characterized in that: A collecting box (14) is provided below one end of the yarn extending downwards, a dust collector (15) is installed at the side end of the collecting box (14), and a box cover (16) capable of opening upwards is provided on the collecting box (14).

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