A convenient-to-operate fabric load elongation detection device

Abstract

The utility model relates to the field of fabric fixed load elongation detection, concretely to a kind of convenient operation's fabric fixed load elongation detection device, including frame main body, clamping upper clamp, clamping lower clamp, metal lifting ring, weight group and scale, scale is used for fast marking on test sample, clamping upper clamp and clamping lower clamp are symmetrically arranged, clamping test sample between clamping upper clamp and clamping lower clamp, the metal lifting ring in upper is fixed in frame main body, clamping upper clamp is connected with frame main body by the metal lifting ring, clamping lower clamp is connected with weight group by the metal lifting ring in lower;Clamping upper clamp and clamping lower clamp all include special-shaped upper clamp and special-shaped lower clamp, special-shaped upper clamp and special-shaped lower clamp are set to staggered, and test sample is clamped by being tightened by handle screw;The utility model can effectively clamp test sample, can avoid sample skidding in testing process, to ensure the accuracy of detection result, save test time.

Description

Technical Field

[0001] This utility model relates to the field of fabric elongation testing under constant load, specifically a fabric elongation testing device that is easy to operate. Background Technology

[0002] Currently, in the quality control of automotive interior products, the testing of fabric elongation at constant load is extremely crucial, leading to the development of constant load elongation testing devices. With the booming development of the automotive industry, users are paying more attention to safety, durability, and ride comfort, whether for airbags or seat covers. The basic principle of this device is to apply a constant load to the warp (or weft) direction of the fabric test sample under specified experimental conditions for a constant time, and then record and represent the resulting elongation deformation on the initial gauge length of the test sample as a percentage.

[0003] Existing fabric constant load elongation testing devices have the following main shortcomings during use: the clamps are prone to slippage, drawing the gauge length is cumbersome, and the weights cannot be freely combined according to different load requirements. Therefore, improvements and optimizations are needed. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned shortcomings by providing a convenient fabric constant load elongation testing device that can effectively clamp the test sample, prevent the sample from slipping during the test, thereby ensuring the accuracy of the test results and saving test time.

[0005] To achieve the above objectives, a convenient fabric constant load elongation testing device is designed, comprising a frame body 1, an upper clamping fixture 2a, a lower clamping fixture 2b, a metal hanging ring 4, a weight set 5, and a scale 6. The scale 6 is used for quick marking on the test sample 3. The upper clamping fixture 2a and the lower clamping fixture 2b are arranged symmetrically, clamping the test sample 3 between them. The upper metal hanging ring 4 is fixed in the frame body 1, and the upper clamping fixture 2a is connected to the frame body 1 through the metal hanging ring 4. The lower clamping fixture 2b is connected to the weight set 5 through the lower metal hanging ring 4. Both the upper clamping fixture 2a and the lower clamping fixture 2b include an irregularly shaped upper clamping fixture 9 and an irregularly shaped lower clamping fixture 10, which are staggered and tightened by a handle screw 7 to clamp the test sample 3.

[0006] Furthermore, the handle screw 7 includes a handle and a screw. The screw of the handle screw 7 passes through the center of the irregular upper clamp 9 and is fixed in the irregular lower clamp 10. The left and right ends of the irregular upper clamp 9 and the irregular lower clamp 10 are connected by plug pins 8.

[0007] Furthermore, the upper contact points of the irregular upper clamp 9 and the irregular lower clamp 10 are both provided with serrated surfaces 12, and are connected to each other through the serrated surfaces 12 to clamp the test sample 3 in a staggered manner. The lower middle part of the irregular lower clamp 10 is connected to the metal lifting ring 4 by a thread. The staggered clamping of the test sample here can avoid the sample slipping during the test and ensure the accuracy of the test results.

[0008] Furthermore, the bottom ends of both the irregular upper clamp 9 and the irregular lower clamp 10 are bent inward to form an L-shaped structure. The bent part at the bottom end of the irregular lower clamp 10 is located below the bent part at the bottom end of the irregular upper clamp 9. A metal spring 11 is provided between the irregular upper clamp 9 and the irregular lower clamp 10, and the test sample 3 to be clamped is inserted by the metal spring 11.

[0009] Furthermore, the height of the scale 6 is consistent with the total length of the test sample 3, the scale 6 has scale lines along the length direction, the scale 6 contains two grooves 13 in the middle, and the clamp spacing and gauge length are marked by the upper and lower lines of the grooves 13.

[0010] Furthermore, the weight set 5 includes a metal hook and a counterweight, and the counterweight can be added or removed as needed via the metal hook.

[0011] Furthermore, at least two metal lifting rings 4 are screwed into the frame body 1, and the at least two metal lifting rings 4 are arranged at a lateral interval to increase the number of test stations according to the number of parallel samples.

[0012] Compared with the prior art, this utility model has the following advantages: (1) This utility model allows staff to draw markings on test samples using vernier calipers and rulers. Using a ruler, the clamp spacing and gauge length can be drawn quickly, saving test time. (2) According to the customer’s requirements for the number of tests, the metal lifting ring can be screwed into the main frame to increase the testing station, which can avoid the parallel sample weights from contacting each other during the test. At the same time, the weights can be freely matched according to several common test loads. (3) The clamping fixture of this utility model can hold the test sample in a misaligned manner, which can avoid the sample slipping during the test, thereby ensuring the accuracy of the test results; In summary, the upper clamp of this invention is connected to the frame body via a metal ring, and the lower clamp is connected to the weights via a metal ring. Compared with traditional devices, this invention can effectively clamp the sample, prevent the sample from slipping, and is easy to operate. The weight set can be customized according to requirements, making it worthy of widespread application. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2yes Figure 1 Side view; Figure 3 This is a schematic diagram of the structure of the upper clamping fixture or the lower clamping fixture of this utility model; Figure 4 yes Figure 3 Side view; Figure 5 yes Figure 3 Top view; In the diagram: 1. Frame body; 2a. Upper clamping fixture; 2b. Lower clamping fixture; 3. Test sample; 4. Metal lifting ring; 5. Weight set; 6. Scale; 7. Handle screw; 8. Plunger; 9. Irregular upper clamping fixture; 10. Irregular lower clamping fixture; 11. Metal spring; 12. Serrated surface; 13. Groove. Detailed Implementation

[0014] As attached Figure 1 To be continued Figure 5 As shown, this utility model provides a convenient fabric constant load elongation testing device, including a frame body 1, an upper clamping fixture 2a, a lower clamping fixture 2b, a metal hanging ring 4, a weight set 5, and a scale 6. The scale 6 is used for quick marking on the test sample 3. The device is characterized in that: the upper clamping fixture 2a and the lower clamping fixture 2b are arranged symmetrically, clamping the test sample 3 between the upper clamping fixture 2a and the lower clamping fixture 2b; the upper metal hanging ring 4 is fixed in the frame body 1; the upper clamping fixture 2a is connected to the frame body 1 through the metal hanging ring 4; the lower clamping fixture 2b is connected to the weight set 5 through the lower metal hanging ring 4; both the upper clamping fixture 2a and the lower clamping fixture 2b include an irregularly shaped upper clamping fixture 9 and an irregularly shaped lower clamping fixture 10, which are staggered and tightened by a handle screw 7 to clamp the test sample 3.

[0015] The upper contact points of the irregular upper clamp 9 and the lower irregular lower clamp 10 are both provided with serrated surfaces 12, and are connected to each other through the serrated surfaces 12 to clamp the test sample 3 in a staggered manner. The lower middle part of the lower irregular lower clamp 10 is connected to the metal lifting ring 4 by a thread. The staggered clamping of the test sample here can avoid the sample slipping during the test and ensure the accuracy of the test results. The bottom ends of the irregular upper clamp 9 and the lower irregular lower clamp 10 are both bent inward to form an L-shaped structure. The bent part of the bottom end of the lower irregular lower clamp 10 is located below the bent part of the bottom end of the upper irregular clamp 9. A metal spring 11 is provided between the upper irregular upper clamp 9 and the lower irregular lower clamp 10, and the test sample 3 to be clamped is placed in the spring 11.

[0016] The handle screw 7 includes a handle and a screw. The screw of the handle screw 7 passes through the center of the irregular upper clamp 9 and is fixed in the irregular lower clamp 10. The left and right ends of the irregular upper clamp 9 and the irregular lower clamp 10 are connected by stop pins 8. The height of the scale 6 is consistent with the total length of the test sample 3. The scale 6 has scale lines along the length direction. The scale 6 contains two grooves 13 in the middle, and the clamp spacing and scale distance are marked by the upper and lower lines of the grooves 13. The weight set 5 includes metal hooks and counterweights on the upper side, and the counterweights can be added or removed as needed through the metal hooks. At least two metal lifting rings 4 are screwed into the frame body 1. The at least two metal lifting rings 4 are arranged at intervals along the lateral direction to increase the number of test stations according to the number of parallel samples.

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: As attached Figure 1 and attached Figure 2 The device shown is a convenient fabric constant load elongation testing device, including a frame body 1, a clamping fixture, a metal ring 4, a weight group 5, and a scale 6 for quick marking on the test sample. The clamping fixture includes upper and lower clamps. The upper clamp is connected to the frame body 1 through the metal ring 4 and the test sample is clamped between the clamps. The lower clamp is connected to the weight group 5 through the metal ring 4.

[0018] As attached Figure 3 To be continued Figure 5 The clamping fixture shown includes an irregularly shaped upper clamp 9 and an irregularly shaped lower clamp 10. The irregularly shaped upper clamp 9 and the irregularly shaped lower clamp 10 are staggered, and the center is fixed to the irregularly shaped lower clamp 10 by a handle screw 7 passing through the irregularly shaped upper clamp 9. The left and right ends of the irregularly shaped upper clamp 9 and the irregularly shaped lower clamp 10 are connected by a stopper pin 8, and a metal spring 11 is contained in the middle. The lower part of the irregularly shaped lower clamp 10 is connected to a metal lifting ring 4 by a thread. The height of the scale 6 is consistent with the total length of the test sample, and it contains two grooves in the middle. The function of the scale 6 is to draw markings on the test sample. The markings can be drawn on a flat surface such as a table, and then the sample is clamped on the fixture as an auxiliary tooling. This auxiliary tooling is marked on the equipment drawing to show that the whole test set has this auxiliary tooling. The weight set 5 includes a metal hook and a counterweight block.

[0019] When the staff needs to conduct a fabric constant load elongation test, the metal lifting ring 4 is fixed in the frame body 1, and the upper clamp is connected below; the clamp markings and initial gauge length are drawn on the test sample using the ruler 6; the upper and lower clamps clamp the sample according to the clamp spacing and tighten them with the handle screw 7; the weight group 5 is connected below the lower clamp to form the load required for the test; the number of test stations is increased according to the number of parallel samples.

[0020] The working principle and usage process of this utility model are as follows: When the staff needs to conduct a fabric constant load elongation test, the metal lifting ring 4 is fixed in the frame body 1, and the upper clamp is connected below; the clamp marks and initial gauge length are drawn on the test sample using a ruler 6, and the initial gauge length distance L0 is measured with a vernier caliper or scanned by a video probe; the upper and lower clamps are counterweighted with 5N, and the sample is clamped according to the clamp spacing, and tightened by the handle screw 7; a weight group 5 is connected below the lower clamp to form the load required for the test. The test load is usually 25N, 50N, 75N, 100N, or 125N, and 20N, 45N, or 50N weights can be used as needed; the number of test stations is increased according to the number of parallel samples; the gauge length distance L is measured with a vernier caliper or scanned by a video probe for a constant time according to the test requirements, and the elongation deformation of the initial gauge length on the test sample caused by this is recorded and expressed as a percentage.

[0021] The contents not described in detail in this specification are existing technologies known to those skilled in the art. The standard parts used can be purchased from the market, and the irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the circuit connection adopts conventional connection methods in the existing technology, which will not be described in detail here.

[0022] This utility model is not limited to the above-described embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of this utility model shall be considered equivalent substitutions and shall be included within the protection scope of this utility model.

Claims

1. A convenient fabric constant load elongation testing device, comprising a frame body (1), an upper clamping fixture (2a), a lower clamping fixture (2b), a metal hanging ring (4), a weight set (5), and a scale (6), wherein the scale (6) is used for rapid marking on the test sample (3), characterized in that: The upper clamp (2a) and the lower clamp (2b) are arranged symmetrically, and the test sample (3) is clamped between the upper clamp (2a) and the lower clamp (2b). The metal ring (4) located above is fixed in the frame body (1). The upper clamp (2a) is connected to the frame body (1) through the metal ring (4). The lower clamp (2b) is connected to the weight group (5) through the metal ring (4) located below. Both the upper clamp (2a) and the lower clamp (2b) include an irregular upper clamp (9) and an irregular lower clamp (10). The irregular upper clamp (9) and the irregular lower clamp (10) are staggered and are tightened by the handle screw (7) to clamp the test sample (3).

2. The fabric constant load elongation testing device as described in claim 1, characterized in that: The handle screw (7) includes a handle and a screw. The screw of the handle screw (7) passes through the center of the irregular upper clamp (9) and is fixed in the irregular lower clamp (10). The left and right ends of the irregular upper clamp (9) and the irregular lower clamp (10) are connected by plug pins (8).

3. The fabric constant load elongation testing device as described in claim 1 or 2, characterized in that: The upper contact points of the irregular upper clamp (9) and the lower irregular clamp (10) are both set with sawtooth surfaces (12), and are connected to each other through the sawtooth surfaces (12) to hold the test sample (3) in a staggered manner. The lower middle part of the lower irregular clamp (10) is connected to the metal lifting ring (4) by a thread.

4. The easy-to-operate fabric constant load elongation testing device as described in claim 3, characterized in that: The bottom ends of the irregular upper clamp (9) and the irregular lower clamp (10) are both bent inward to form an L-shaped structure. The bent part of the bottom end of the irregular lower clamp (10) is located below the bent part of the bottom end of the irregular upper clamp (9). A metal spring (11) is provided between the irregular upper clamp (9) and the irregular lower clamp (10), and the metal spring (11) is used to open the clamp to insert the test sample (3) to be clamped.

5. The fabric constant load elongation testing device as described in claim 1, characterized in that: The height of the scale (6) is consistent with the total length of the test sample (3). The scale (6) has scale lines along the length direction. The scale (6) contains two grooves (13) in the middle, and the clamp spacing and gauge length are marked by the upper and lower lines of the grooves (13).

6. The fabric constant load elongation testing device as described in claim 1, characterized in that: The weight set (5) includes a metal hook and a counterweight, and the counterweight can be added or removed as needed via the metal hook.

7. The fabric constant load elongation testing device as described in claim 1, characterized in that: At least two metal lifting rings (4) are screwed into the frame body (1), and the at least two metal lifting rings (4) are arranged at a lateral interval to increase the number of test stations according to the number of parallel samples.

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