Woven fabric tension contrast testing device

Abstract

The utility model discloses a woven fabric tension contrast testing device which is characterized by comprising a testing tool table, and a plurality of testing stations are arranged at the top of the testing tool table; the test stations are respectively provided with a tension test mechanism. The tension testing mechanism comprises a first clamp structure and a second clamp structure which are matched with each other; the distance between the first clamp structure and the second clamp structure is adjusted through a height adjusting structure; the first clamp structure is arranged in a sliding connection mode through the sliding tooth structure. The first clamp structure is assembled and connected with a pressure sensor; and the hydraulic driving structure is used for lifting the first clamp structure. The structure is high in testing efficiency, can be matched with a high-speed running production line for quality inspection operation, and can realize synchronous detection of a plurality of groups of fabrics to be detected.

Description

Technical Field

[0001] This utility model belongs to the field of tensile testing technology for woven fabrics, and in particular relates to a tensile testing device for woven fabrics. Background Technology

[0002] Woven fabric is a type of fabric produced using assembly line production lines, which are woven on machines such as rotary looms. In the production process of woven fabric, assembly line operations offer very high production speeds, resulting in large daily batch sizes.

[0003] After each batch of fabric is produced, the fabric needs to undergo performance tests, including tensile strength tests, abrasion resistance tests, color fastness tests, and many other performance tests.

[0004] The basic principle of current fabric tensile performance testing is to fix both ends of the fabric and then pull it using a tensile testing device until the fabric breaks, reflecting its maximum tensile strength. For example, a tensile testing machine is used to test fabric tensile properties.

[0005] However, none of the current fabric testing machines can perform multiple fabric tests at once, while high-speed production lines produce many batches daily, resulting in a large number of samples to be tested. In actual production, there simply isn't enough time to sample and send the fabric from each batch for testing. This is because fabric needs to be tested immediately after production, and qualified fabric is immediately stacked and sent to the warehouse to free up space for subsequent finished fabrics.

[0006] Therefore, designing a fast and accurate detection method that can simultaneously detect fabrics from multiple batches not only greatly improves detection efficiency but also works in conjunction with high-speed production lines.

[0007] Therefore, it is very important to install a testing device in the workshop that has a fast testing speed, high accuracy, and high testing efficiency to improve production efficiency.

[0008] The rapid sampling, testing, and warehousing of fabrics from the high-speed production line will fundamentally solve the technical problem of lagging quality inspection in fabric production. Utility Model Content

[0009] Based on the above background, the purpose of this utility model is to provide a tensile strength comparison test device for woven fabrics.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] A tensile strength comparison testing device for woven fabrics includes a testing fixture table, the top of which is provided with several testing stations; each testing station is provided with a tensile testing mechanism.

[0012] The tensile testing mechanism includes a first clamp structure and a second clamp structure that cooperate with each other;

[0013] The second clamping structure adjusts the distance between itself and the first clamping structure via a height adjustment structure; the first clamping structure is slidably connected via a sliding tooth structure.

[0014] A pressure sensor is mounted and connected to the first fixture structure;

[0015] It also includes a hydraulic drive structure used to raise the first clamping structure.

[0016] Preferably, the first clamping structure and the second clamping structure are arranged symmetrically vertically.

[0017] Both the first clamping structure and the second clamping structure include a clamping base, on which a through groove is provided, and a locking structure for locking fabric is assembled and connected in the through groove.

[0018] Preferably, the locking structure includes a fixed locking tooth seat that is detachably installed in the through groove, and a sliding locking tooth seat that cooperates with the fixed locking tooth seat;

[0019] The fixture seat is threadedly connected to a push screw that pushes the sliding locking tooth seat; the inner end of the push screw is rotatably connected to the smooth surface of the sliding locking tooth seat;

[0020] The fixed locking tooth seat and the sliding locking tooth seat have locking tooth structures on their side walls facing each other.

[0021] Preferably, the clamp seat has a fabric opening with a through groove.

[0022] Preferably, the test station has several sinking grooves, and the height adjustment structure includes an adjustment seat fixedly connected in the sinking groove. The adjustment seat is threadedly connected to an upper screw. In the second clamping structure, the bottom of the clamping seat is fixedly connected to a top seat with a limit rotatable connection to the upper screw.

[0023] Preferably, the sliding tooth structure includes a pair of sliding arms that are respectively fixedly connected to the side walls of the clamp seat in the first clamp structure;

[0024] The sliding arm has several sliding teeth integrally formed on it;

[0025] It also includes brackets that are slidably connected to the sliding arms, and the brackets are provided with a plurality of sliding tooth grooves for limiting sliding connection of sliding teeth.

[0026] Preferably, the pressure sensor is a screw-type pressure sensor;

[0027] The lower end of the screw-type pressure sensor is threadedly connected to the top position of the clamp seat in the first clamp structure.

[0028] Preferably, the hydraulic drive structure includes a lifting bracket that is fixedly connected between the screw-type pressure sensors;

[0029] It also includes a hydraulic cylinder that is fixedly installed at the top of the lifting bracket. During the test, the hydraulic cylinder pulls the lifting bracket up.

[0030] Preferably, the hydraulic drive structure further includes a pair of guide rails fixedly installed on both sides of the top of the test fixture;

[0031] A cylinder support is fixedly connected between the tops of the guide rails, and the cylinder of the hydraulic cylinder is fixedly mounted on the cylinder support.

[0032] The lifting support is slidably connected to the guide rail.

[0033] Preferably, the lifting bracket has mounting holes at both ends, and a sliding sleeve for a sliding connecting guide rail rod is fixedly installed in the mounting holes.

[0034] This utility model has the following beneficial effects:

[0035] 1. The multi-station testing device disclosed in this utility model not only boasts high testing efficiency and can be integrated with high-speed production lines for quality inspection, but also enables simultaneous testing of multiple sets of fabrics to be tested, including comparative testing and pressure value measurement. Therefore, it offers advantages such as high testing efficiency, fast testing speed, high accuracy, and rapid assembly and testing.

[0036] 2. The distance between the second clamp structure and the first clamp structure is adjustable. This solves the problem of needing to remake the fabric strip during the test process because the fabric strip length is not accurately controlled during the preparation of the test sample. Therefore, the distance adjustment avoids the drawbacks of secondary correction and the preparation of fabric samples, thus further increasing the testing efficiency.

[0037] 3. Locking tooth structures are provided on the side walls of the fixed locking tooth seat and the sliding locking tooth seat facing each other. The locking tooth structures cooperate with each other, that is, when the fixed locking tooth seat and the sliding locking tooth seat are combined, their locking tooth structures cooperate with each other (i.e., the concave and convex structures cooperate with each other), thereby fully locking the fabric through the locking tooth structure.

[0038] 4. During the test, the sliding tooth structure increases the stability of the first clamp structure of the lifting motion, thereby ensuring that the vertical force of deviation is avoided during the test, which would affect the accuracy of the test. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0041] Figure 2 This is a schematic diagram of the planar structure of the second clamping structure in an embodiment of this utility model;

[0042] Figure 3 This is a three-dimensional structural diagram of the second clamp structure in an embodiment of this utility model;

[0043] Figure 4 This is a schematic diagram of the structure of the first clamp in the embodiment of this utility model;

[0044] Figure 5 This is an embodiment of the present utility model. Figure 4 A structural diagram from another perspective;

[0045] Figure 6 This is an embodiment of the present utility model. Figure 1 Front view in the middle;

[0046] Figure 7 This is an embodiment of the present utility model. Figure 1 Middle right view;

[0047] Figure 8 This is a schematic diagram of the locking tooth structure in an embodiment of the present invention.

[0048] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0050] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0051] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0052] Example 1

[0053] like Figure 1-8 As shown, a tensile strength comparison testing device for woven fabrics includes a testing fixture 1, with several testing stations on the top of the fixture 1. During operation, each testing station is used to test a sample of a batch of produced fabric. Simultaneously, the produced fabric can be tested together with qualified fabric that has already passed inspection, using the qualified fabric as a control group.

[0054] This method first enables batch testing to meet the needs of high-speed production lines. Secondly, comparison testing with qualified fabrics provides a more accurate reflection of the quality of the produced fabric. For example, if the tested fabric remains intact after the qualified fabric breaks during testing, it indicates that the produced fabric is qualified. Similarly, during testing, a pressure sensor provides feedback on the test pressure; if the tested fabric remains unbroken after the test pressure reaches the acceptable value, it also indicates that the produced fabric is qualified. This method can be implemented using two different testing techniques.

[0055] If the first comparative tear test method can be used to evaluate the fabric during the production process, the fabric test can be completed more quickly.

[0056] Specifically, each of the aforementioned testing stations is equipped with a tensile testing mechanism 5; specifically, the tensile testing mechanism 5 includes a first clamping structure 53 and a second clamping structure 54 (arranged symmetrically above and below each other) that cooperate with each other.

[0057] During the test, the upper and lower ends of the fabric are locked by the first clamping structure 53 and the second clamping structure 54, respectively.

[0058] Meanwhile, the second fixture structure 54 adjusts the distance from the first fixture structure 53 through the height adjustment structure 55. By adjusting the distance, the distance between the first fixture structure 53 and the second fixture structure is correspondingly adjusted according to the length of the sampled fabric sample (fabric strip), so as to achieve faster feeding and locking of the fabric in this way.

[0059] For traditional testing mechanisms, the fixtures are fixed. Once the fabric strip prepared by the operator is too long or too short, it is inconvenient to install, and it is difficult to correct the length of the fabric strip. This seriously affects the testing efficiency.

[0060] During the testing process, in order to improve the stability of the顶升 (it should be "lifting" here) of the first fixture structure 53, the present invention improves the sliding connection method of the first fixture structure 53, and uses a sliding tooth structure to achieve more precise sliding and lifting, so as to ensure that the fabric is vertically stretched during the straightening test.

[0061] Meanwhile, as another detection means (reading detection), a pressure sensor 52 is assembled and connected to the above-mentioned first fixture structure 53. Among them, the pressure sensor 52 is a conventional screw-type pressure sensor 52 disclosed in the prior art.

[0062] The data line on the pressure sensor 52 is installed on a matching display in the same way as the existing pressure sensor 52 reads the data. When the pressure sensor 52 works, the sensed pressure signal is fed back and read through the matching display.

[0063] During the implementation process, the tensile force value of the fabric during the test is measured by reading. That is, during the test, when the tensile force of the fabric reaches the standard value during the test and the fabric still does not break, it means that the anti-tensile performance of the fabric is qualified (another method is a control test. The qualified fabric and the test fabric are clamped and tested at the same time. When the qualified fabric breaks and the test fabric is intact, it means that the test fabric is qualified).

[0064] Meanwhile, the testing device further includes a hydraulic drive structure, which is used to lift the first fixture structure 53.

[0065] Embodiment 2

[0066] As Figure 1-8 shown, this embodiment discloses the specific structures of both the first fixture structure 53 and the second fixture structure 54 on the basis of the structure of Embodiment 1.

[0067] The first fixture structure 53 and the second fixture structure 54 have the same structure. Specifically: both the first fixture structure 53 and the second fixture structure 54 include a fixture seat 542, and a through groove is provided on the fixture seat 542, and a locking structure for locking the fabric is assembled and connected in the through groove.

[0068] Specifically, in order to increase the locking force on the fabric and prevent the fabric from coming off during the straightening test, this utility model improves the locking structure to lock in a more stable way.

[0069] Specifically, the locking structure includes a fixed locking tooth seat 543 that can be detachably installed in the through groove (specifically, a number of countersunk screws are threadedly connected to the clamp seat 542, and the countersunk screws fasten the countersunk screws), and also includes a sliding locking tooth seat 541 that cooperates with the fixed locking tooth seat 543.

[0070] Specifically, the fixture seat 542 is threadedly connected to a push screw 5411 that pushes the sliding locking tooth seat 541; the inner end of the push screw 5411 is rotatably connected to the smooth surface of the sliding locking tooth seat 541.

[0071] Specifically, similar to the existing limit rotation connection method, a limit seat for the rotatable connecting push screw 5411 is fixedly connected to the smooth surface of the sliding locking tooth seat 541. The inner end (rotatable connection end) of the push screw 5411 is limited in the groove of the rotatable connecting limit seat (the limit rotation connection method is: a limit rotating head is fixedly connected to the inner end of the push screw 5411, and the limit rotating head is limited in the rotation groove). Therefore, the end part of the push screw 5411 forms a T-shaped limit rotation structure, and correspondingly, the groove of the limit seat forms a T-shaped groove.

[0072] During the rotation of the push screw 5411, the threaded push force brings the sliding locking tooth seat 541 (with its top and bottom limited at the top and bottom of the through groove) close to the fixed locking tooth seat 543 until the fabric is squeezed.

[0073] Meanwhile, locking tooth structures are provided on the side walls of the fixed locking tooth seat 543 and the sliding locking tooth seat 541 facing each other. The locking tooth structures cooperate with each other, that is, when the fixed locking tooth seat 543 and the sliding locking tooth seat 541 are combined, their locking tooth structures cooperate with each other (i.e., the concave and convex structures cooperate with each other), thereby fully locking the fabric through the locking tooth structure.

[0074] Meanwhile, in order to facilitate the locking of the fabric, the clamp seat 542 is provided with a fabric opening 5421 that connects to the through groove.

[0075] In the fabric locking process, the fabric passes through the fabric opening 5421 and is then locked in place using the method described above.

[0076] Example 3

[0077] like Figure 1As shown in the figure, based on the structure of embodiment 2, this embodiment has several sinking grooves on the test station. The height adjustment structure 55 includes an adjustment seat 551 fixedly connected in the sinking groove. The adjustment seat 551 is threadedly connected to an upper screw 552 (the adjustment seat 551 has a threaded groove of a certain depth). In the second clamping structure 54, the bottom of the clamping seat 542 is fixedly connected to a top seat 553 that has a limit rotation connection to the upper screw 552 (the limit rotation connection method is the same as the limit rotation connection structure of the push screw 5411 mentioned above, and the top of the upper screw 552 is integrally formed with a limit rotation head 5521).

[0078] Meanwhile, for ease of operation, the aforementioned upper screw 552 is integrally formed with hexagonal protrusions for convenient operation.

[0079] If the length of the fabric strip sample is too small, the second clamping structure 54 needs to be raised. This is done by using a wrench to help turn the upper screw 552, causing the thread of the upper screw 552 to extend out of the adjusting seat 551 and rise. Conversely, the height is lowered. This method allows for flexible adjustment according to the length of the fabric strip.

[0080] The reason is that during the actual testing process, the operator cuts samples from the fabric. Therefore, the length of the cut is often difficult to control. So, by adjusting the spacing of the clamps to match the length of the fabric strip, the sample can be made again without having to cut the fabric strip. If the fabric strip is too short, it can be adjusted in this way and then tested without having to cut the sample fabric strip again.

[0081] This method solves the problem of the fabric strip length not being accurately controlled during the test sample production process, which necessitates remaking the fabric strip during testing.

[0082] Example 4

[0083] like Figure 1-8 As shown, in this embodiment, based on the structure of embodiment 3, the first clamping structure 53 is lifted upwards during the test. Therefore, in order to increase the stability of the vertical movement of the first clamping structure 53 and avoid the pulling force of the vertical deviation during the test, which would affect the accuracy of the test, the above-mentioned sliding tooth structure includes a pair of sliding arms 531 (L-shaped, fixed to the clamping seat 542 by welding) respectively fixedly connected to the front and rear side walls of the clamping seat 542 in the first clamping structure 53. At the same time, a number of sliding teeth 5311 (rectangular in shape) are integrally formed on the sliding arms 531.

[0084] Correspondingly, it also includes a bracket 532 that slides and connects the sliding arm 531 respectively (the bracket 532 is arranged on both sides of the first clamping structure 53, and the bottom is fixed on the top of the test fixture table 1). Correspondingly, the bracket 532 is provided with a number of sliding tooth 5311 grooves for limiting sliding connection sliding teeth 5311.

[0085] Meanwhile, similar to the installation method of the existing screw-type pressure sensor 52, the lower end of the screw-type pressure sensor 52 is threadedly connected to the top position of the clamp seat 542 in the first clamp structure 53 (the upper and lower ends of the screw-type pressure sensor 52 are screw structures, and the central part is a sensor structure).

[0086] In actual operation, to avoid the friction of the sliding tooth 5311 affecting accuracy, the existing method is to keep sufficient lubricating oil between the sliding tooth 5311 and its groove, as the friction value is small and negligible. Alternatively, during testing, the friction force can be pre-measured using a logarithmic correction method (the friction force is constant, so the measured pressure value can be corrected for frictional resistance to obtain a more accurate value).

[0087] Example 5

[0088] like Figure 1 As shown, this embodiment, based on the structure of embodiment 4, includes a hydraulic drive structure comprising a lifting bracket 41 fixedly connected between screw-type pressure sensors 52; and a hydraulic cylinder 4 fixedly installed at the top of the lifting bracket 41 (specifically, the piston rod is fixedly installed on the lifting bracket 41 via a flange). During the test, the hydraulic cylinder 4 pulls the lifting bracket 41 up. The hydraulic cylinder 4 is a conventional hydraulic cylinder 4 used in prior art fabric tensile testing.

[0089] Meanwhile, the hydraulic drive structure also includes a pair of guide rails 2 fixedly installed on both sides of the top of the test fixture 1; a cylinder support 3 is fixedly connected between the tops of the guide rails 2, and the cylinder of the hydraulic cylinder 4 is fixedly installed on the cylinder support 3; the lifting bracket 41 is slidably connected to the guide rails 2.

[0090] Correspondingly, mounting holes are provided at both ends of the lifting bracket 41, and the sliding sleeve 21 of the sliding connecting guide rod 2 is fixedly installed in the mounting holes.

[0091] Under normal circumstances, the bottom of the lifting bracket 41 is supported on the top of the bracket 532. During the test, the hydraulic cylinder 4 pulls up all the first clamping structures 53 simultaneously, and the clamped fabric follows the pull test.

[0092] After the test is completed, the hydraulic cylinder 4 drives the lifting bracket 41 to reset and support it again on the bracket 532.

[0093] The above structure enables simultaneous testing of multiple samples, as well as comparative testing of the tested fabric with qualified fabric.

[0094] This utility model discloses three testing stations, which can simultaneously test two batches of fabric and a qualified fabric for comparison, or test three batches of fabric.

[0095] In actual work, the number of testing stations can be increased according to testing needs. For example, five stations can be used to sample and test five batches of fabric samples.

[0096] Therefore, the multi-station testing device disclosed in this utility model not only boasts high testing efficiency and can operate in conjunction with high-speed production lines, but also enables two testing modes: control testing and pressure value measurement. Thus, it offers advantages such as high testing efficiency, fast testing speed, high accuracy, and rapid assembly and testing.

[0097] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A tensile strength comparison testing device for woven fabrics, characterized in that, It includes a test fixture, the top of which is provided with several test stations; each test station is provided with a tensile testing mechanism. The tensile testing mechanism includes a first clamp structure and a second clamp structure that cooperate with each other; The second clamping structure adjusts the distance between itself and the first clamping structure via a height adjustment structure; the first clamping structure is slidably connected via a sliding tooth structure. A pressure sensor is mounted and connected to the first fixture structure; It also includes a hydraulic drive structure used to raise the first clamping structure.

2. The tensile strength comparison testing device for woven fabrics according to claim 1, characterized in that, The first clamp structure and the second clamp structure are arranged symmetrically from top to bottom; Both the first clamping structure and the second clamping structure include a clamping base, on which a through groove is provided, and a locking structure for locking fabric is assembled and connected in the through groove.

3. The tensile strength comparison testing device for woven fabrics according to claim 2, characterized in that, The locking structure includes a fixed locking tooth seat that can be detachably installed in the through groove, and a sliding locking tooth seat that cooperates with the fixed locking tooth seat; The fixture seat is threadedly connected to a push screw that pushes the sliding locking tooth seat; the inner end of the push screw is rotatably connected to the smooth surface of the sliding locking tooth seat; The fixed locking tooth seat and the sliding locking tooth seat have locking tooth structures on their side walls facing each other.

4. The tensile strength comparison testing device for woven fabrics according to claim 2, characterized in that, The clamp seat has a fabric opening with a through groove.

5. The tensile strength comparison testing device for woven fabrics according to claim 2, characterized in that, The test station is provided with several sinking grooves. The height adjustment structure includes an adjustment seat fixedly connected in the sinking groove. The adjustment seat is threadedly connected to an upper screw. In the second clamping structure, the bottom of the clamping seat is fixedly connected to a top seat with a limit rotatable connection to the upper screw.

6. The tensile strength comparison testing device for woven fabrics according to claim 2, characterized in that, The sliding tooth structure includes a pair of sliding arms that are respectively fixedly connected to the side walls of the clamp seat in the first clamp structure; The sliding arm has several sliding teeth integrally formed on it; It also includes brackets that are slidably connected to the sliding arms, and the brackets are provided with a plurality of sliding tooth grooves for limiting sliding connection of sliding teeth.

7. The tensile strength comparison testing device for woven fabrics according to claim 2, characterized in that, The pressure sensor is a screw-type pressure sensor; The lower end of the screw-type pressure sensor is threadedly connected to the top position of the clamp seat in the first clamp structure.

8. The tensile strength comparison testing device for woven fabrics according to claim 7, characterized in that, The hydraulic drive structure includes a lifting bracket that is fixedly connected between screw-type pressure sensors. It also includes a hydraulic cylinder that is fixedly installed at the top of the lifting bracket. During the test, the hydraulic cylinder pulls the lifting bracket up.

9. The tensile strength comparison testing device for woven fabrics according to claim 8, characterized in that, The hydraulic drive structure also includes a pair of guide rails fixedly installed on both sides of the top of the test fixture; A cylinder support is fixedly connected between the tops of the guide rails, and the cylinder of the hydraulic cylinder is fixedly mounted on the cylinder support. The lifting support is slidably connected to the guide rail.

10. The tensile strength comparison testing device for woven fabrics according to claim 9, characterized in that, The lifting bracket has mounting holes at both ends, and a sliding sleeve for a sliding connecting guide rail rod is fixedly installed in the mounting holes.

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