A fixture for testing a sample of a nail hammering method

Abstract

The utility model relates to textile performance detection field discloses a kind of nail hammer method to hook sample testing fixture, including nail hammer hooking instrument main part, rotating connection on the drum of nail hammer hooking instrument main part, guide rod is set above drum, through the chain of fixed connection in the guide rod one end and the hanging nail hammer of guide rod connection, and setting clamping assembly on the drum;Clamping assembly includes: along the length direction sliding connection of connecting cylinder of drum, and the clamping piece located in the both sides of connecting cylinder;Connecting cylinder is equipped with arc slot in the outer side two ends close to clamping piece, and clamping piece is used to give the tendency of displacement to arc slot to clamping fixed measured cloth.The utility model is by setting connecting cylinder and clamping piece, one side can be slid outward to increase operating space with connecting cylinder, it is convenient to material around to connecting cylinder, on the other hand, clamping piece can always give the tendency of displacement to arc slot to material, realize firm clamping, enhance the installation stability of measured cloth when detecting.

Description

Technical Field

[0001] This utility model relates to the field of textile performance testing, and in particular to a clamp for a sample for the nail hammer method for snagging test. Background Technology

[0002] In the field of textile performance testing, it is stipulated that spun products must comply with the national standard GB / T 11047-2008. GB / T11047-2008 is the current standard for "Evaluation of the Snagging Performance of Textile Fabrics by Hammer Method". It provides a test method and evaluation index for determining the snagging performance of fabrics. This standard is applicable to knitted fabrics, woven fabrics and other fabrics that are prone to snagging, and is particularly applicable to chemical fiber filaments and their textured yarns.

[0003] The hammer snag test, provided by the national standard GB / T 11047-2008, is an important method widely used to evaluate the snag resistance of fabrics. Traditional hammer snag tests typically use rubber rings as clamps to fix the fabric to be tested onto a rotating drum. However, existing rubber ring clamps have some significant limitations and problems. First, during installation, the rubber ring needs to be squeezed inwards towards the rotating drum to fix the fabric. This process is not only cumbersome, but for some thicker or stiffer fabrics, the elasticity of the rubber ring may not be sufficient to provide adequate clamping force, resulting in insecure fabric fixation. During the test, the fabric may shift due to centrifugal force, affecting the accuracy of the test results. Furthermore, the rubber ring is of a fixed size; for fabric samples of different thicknesses, the clamping effect of a fixed-size rubber ring varies, resulting in inconsistent clamping forces and reduced clamping stability during the test.

[0004] Therefore, a new solution is needed to address the above problems. Summary of the Invention

[0005] This invention overcomes the shortcomings of the prior art and provides a fixture for testing specimens using the hammer-and-screw method.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a clamp for a sample for a hammer-type snagging test, comprising: a hammer-type snagging instrument body, a rotating cylinder rotatably connected to the hammer-type snagging instrument body, a guide rod disposed above the rotating cylinder, a hammer connected to the guide rod via a chain fixedly connected to one end of the guide rod, and a clamping assembly disposed on the rotating cylinder; the clamping assembly comprises: a connecting cylinder slidably connected along the length direction of the rotating cylinder, and clamping members located on both sides of the connecting cylinder; the connecting cylinder has arc-shaped grooves at its outer ends near the clamping members, and the clamping members are used to give the fabric to be tested a tendency to displace towards the arc-shaped grooves to clamp and fix the fabric to be tested.

[0007] In a preferred embodiment of this utility model, the clamping member includes: a fixed rod fixedly connected to both sides of the connecting cylinder, a rotating shaft fixedly connected to the fixed rod towards the clamping member at the other end, a telescopic rod rotatably connected to the rotating shaft, an elastic element disposed within the telescopic rod, and an abutment block fixedly connected to the side of the telescopic rod away from the rotating shaft; the elastic element always gives the telescopic rod a tendency to extend; the cross-section of the end of the abutment block facing the connecting cylinder is arc-shaped.

[0008] In a preferred embodiment of this utility model, a first rubber pad is fixedly connected to the arc-shaped cross-section of the contact block.

[0009] In a preferred embodiment of this invention, the first rubber pad has a thickness of 1.5-3.0 mm and an anti-slip particle array on its surface.

[0010] In a preferred embodiment of this utility model, the outer circumferential array of the rotating cylinder has a limiting slider, and the inner circumferential surface of the connecting cylinder has a sliding groove that matches the limiting slider.

[0011] In a preferred embodiment of this utility model, a connecting groove is provided at one end of the connecting cylinder facing the main body of the hammer wire hooking device, and a magnetic ring is fixedly connected to the connecting groove. A connecting disk is provided at one end of the rotating cylinder near the main body of the hammer wire hooking device, and the connecting disk is in contact with the magnetic ring and can attract the magnetic ring.

[0012] In a preferred embodiment of this invention, the telescopic rod can rotate 360° along the rotation axis.

[0013] In a preferred embodiment of this utility model, a drive motor is provided inside the main body of the hammer wire hooker, a drive rod is provided at the output end of the drive motor, and the rotating drum is fixedly connected to the drive rod.

[0014] In a preferred embodiment of this utility model, a second rubber pad is fixedly connected to the surface of the arc-shaped groove.

[0015] In a preferred embodiment of this utility model, both the rotating drum and the connecting drum are made of aluminum alloy.

[0016] This utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0017] (1) This application sets up a connecting cylinder that slides along the length of the rotating drum, and clamping components with elastic elements, telescopic rods and abutment blocks on both sides of the connecting cylinder. When installing the fabric to be tested, the connecting cylinder can be slid outward first to increase the operating space and facilitate wrapping the fabric around the rotating drum. After the two ends of the fabric overlap and are placed on the arc groove, the rotatable abutment blocks, in conjunction with the elastic elements, always give the telescopic rods a tendency to extend, so that the abutment blocks press the fabric tightly and achieve a firm clamping. This design directly makes the installation of the fabric to be tested more convenient. Compared with the traditional method of using rubber rings that need to be squeezed inward to fix, the operation is more labor-saving and the clamping is more stable. This not only improves the efficiency of fabric installation, but also ensures that the fabric will not shift due to insecure fixing during the snagging test, thereby improving the accuracy of the test results.

[0018] (2) This application features a circumferential array of limit sliders on the outer side of the rotating drum, and a sliding groove matching the limit sliders on the inner circumferential surface of the connecting drum. At the same time, a connecting groove with a magnetic ring is provided at the end of the connecting drum facing the main body of the hammer hooking device, and a connecting plate that can attract the magnetic ring is provided at the end of the rotating drum near the main body of the hammer hooking device. On the one hand, the limit sliders and the sliding grooves cooperate with each other to ensure that the connecting drum can slide stably along the length direction on the rotating drum without shaking or jamming, which makes it convenient for operators to accurately adjust the position of the connecting drum to adapt to the installation requirements of different sizes of fabric. On the other hand, the attraction between the magnetic ring and the connecting plate further strengthens the connection between the connecting drum and the rotating drum, preventing the connecting drum from loosening during high-speed rotation testing. This design directly improves the overall mechanical stability of the fixture, ensuring that the fixture can still reliably fix the fabric during long-term, high-intensity hooking tests. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0020] Figure 1 This is a perspective structural diagram of a preferred embodiment of the present invention;

[0021] Figure 2 yes Figure 1 Enlarged diagram of section A in the middle;

[0022] Figure 3 This is a cross-sectional view of the clamping component of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the transfer cylinder and the connecting cylinder of this utility model;

[0024] In the diagram: 1. Main body of the nail hammer wire hooker; 2. Guide rod; 3. Chain; 4. Nail hammer; 5. Rotating cylinder; 51. Limiting slider; 52. Connecting plate; 6. Connecting cylinder; 61. Arc groove; 7. Clamping component; 71. Fixing rod; 72. Rotating shaft; 73. Telescopic rod; 74. Abutment block; 75. Elastic component. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0026] Example:

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a fixture for a sample for a hammer snag test includes: a hammer snag tester body 1, a rotating drum 5 rotatably connected to the hammer snag tester body 1, a guide rod 2 disposed above the rotating drum 5, a hanging hammer 4 connected to the guide rod 2 via a chain 3 fixedly connected to one end of the guide rod 2, and a clamping assembly disposed on the rotating drum 5; a drive motor is disposed inside the hammer snag tester body 1, and a drive rod is disposed at the output end of the drive motor, and the rotating drum 5 is fixedly connected to the drive rod. During the test, the clamping assembly clamps the fabric to be tested, the hanging hammer 4 is lowered to contact the fabric to be tested, the drive motor is started, and the rotating drum 5 is driven to rotate, so that the hanging hammer 4 performs a snag test along the rotating surface of the fabric to be tested, thereby detecting the performance of the fabric.

[0028] Specifically, the clamping assembly includes: a connecting cylinder 6 that is slidably connected along the length of the rotating cylinder 5, and clamping members 7 located on both sides of the connecting cylinder 6; the connecting cylinder 6 has arc-shaped grooves 61 at both outer ends near the clamping members 7, and the clamping members 7 are used to give the fabric to be tested a tendency to move towards the arc-shaped grooves 61 to clamp and fix the fabric to be tested; the traditional nail hammer method for snagging test specimens is generally fixed by rubber rings. During installation, the rubber rings need to be moved towards the inside of the rotating cylinder 5, which is quite laborious. However, this application sets a connecting cylinder 6 that is slidably connected to the rotating cylinder 5, which on the one hand allows the connecting cylinder 6 to slide outward, increasing the operating space of the fabric, and on the other hand, sets a tendency to always give the fabric to be tested a tendency to move towards the arc-shaped grooves 61, thereby strengthening the fixation of the fabric.

[0029] Furthermore, the clamping member 7 includes: a fixing rod 71 fixedly connected to both sides of the connecting cylinder 6 by bolts; a rotating shaft 72 integrally formed and connected to the fixing rod 71 facing the clamping member 7 at the other end; a telescopic rod 73 rotatably connected to the rotating shaft 72; an elastic element 75 disposed within the telescopic rod 73; and an abutment block 74 integrally formed and fixed to the side of the telescopic rod 73 away from the rotating shaft 72. The elastic element 75 always gives the telescopic rod 73 a tendency to extend. The abutment block 74 has an arc-shaped cross-section at one end facing the connecting cylinder 6. During the hook-and-loop test, the fabric can be wrapped around the outside of the connecting cylinder 6. The fabric is long enough and the two ends of the fabric overlap each other and are placed on the arc-shaped groove 61. At this time, the abutment block 74, which is connected to the rotating shaft 72 via the telescopic rod 73, can be rotated relative to the rotating shaft 72 at the position of the rotating groove, so that the abutment block 74 presses the fabric tightly, so that the fabric is firmly fixed between the clamping member 7 and the arc-shaped groove 61, increasing the stability during testing.

[0030] Furthermore, a first rubber pad is bonded and fixed on the arc-shaped cross-section of the contact block 74. The first rubber pad has a thickness of 1.5-3.0mm and an anti-slip particle array on its surface. A second rubber pad is bonded and fixed on the surface of the arc-shaped groove 61 to increase the friction between the fabrics to be tested by increasing the coefficient of friction, thereby increasing the clamping stability.

[0031] Furthermore, the outer circumferential array of the rotating cylinder 5 has a limiting slider 51, and the inner circumferential surface of the connecting cylinder 6 has a sliding groove that matches the limiting slider 51, in order to ensure the sliding connection between the rotating cylinder 5 and the connecting cylinder 6, and to facilitate the operation of the fabric to be tested during installation.

[0032] Furthermore, a connecting groove is provided at one end of the connecting cylinder 6 facing the main body 1 of the hammer wire hooking device, and a magnetic ring is fixedly connected to the connecting groove. A connecting plate 52 is provided at one end of the rotating cylinder 5 near the main body 1 of the hammer wire hooking device. The connecting plate 52 is in contact with the magnetic ring and can attract the magnetic ring. The connection between the connecting cylinder 6 and the rotating cylinder 5 is strengthened by the attraction between the magnetic ring and the connecting plate 52.

[0033] Furthermore, the telescopic rod 73 can rotate 360° along the rotating shaft 72, further enhancing the ease of operation.

[0034] Furthermore, both the rotating drum 5 and the connecting drum 6 are made of aluminum alloy to enhance wear resistance and improve service life.

[0035] It is worth mentioning that by setting multiple clamping parts 7 on the connecting cylinder 6, the clamping parts 7 can be arranged in a circular array on the connecting cylinder 6, thereby clamping finished fabrics such as socks, so as to conduct snag tests on finished products such as socks, and ensure that the produced fabric products meet the requirements of the national standard GB / T 11047-2008.

[0036] In use, the connecting cylinder 6 is first slid outwards until a suitable position is reached for the fabric to be tested. Next, the fabric is wrapped around the outside of the rotating cylinder 5, ensuring that both ends of the fabric overlap, and placed on the arc-shaped grooves 61 at both ends of the connecting cylinder 6. Then, the telescopic rod 73 is rotated relative to the rotating shaft 72 towards the position of the rotating groove, causing the contact block 74 to press firmly against the fabric. At this time, the elastic element 75 always provides a tendency for the telescopic rod 73 to extend, ensuring that the contact block 74 firmly clamps the fabric. Furthermore, the first rubber pad bonded to the arc-shaped cross-section of the contact block 74 and the second rubber pad bonded to the surface of the arc-shaped groove 61 increase the coefficient of friction, enhancing the friction between the fabric and the clamping member 7 and the arc-shaped groove 61, thus improving the stability of the clamping. After the fabric is secured, lower the nail hammer 4 so that it contacts the surface of the fabric to be tested. Finally, start the drive motor inside the main body 1 of the nail hammer snagging tester. The drive motor drives the rotating drum 5 to rotate via the drive rod, thereby causing the nail hammer 4 to perform a snagging test along the rotating surface of the fabric to be tested, thus detecting the fabric's performance. The entire installation process is not only convenient to operate, but also ensures the stability of the fabric during the test, improving the accuracy of the test results.

[0037] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A fixture for testing specimens using the hammer-and-spin method, characterized in that, include: The main body (1) of the hammer wire hooker, the rotating drum (5) rotatably connected to the main body (1), the guide rod (2) set above the rotating drum (5), the hanging hammer (4) connected to the guide rod (2) by a chain (3) fixedly connected to one end of the guide rod (2), and the clamping assembly set on the rotating drum (5); The clamping assembly includes: a connecting cylinder (6) slidably connected along the length direction of the rotating cylinder (5), and clamping members (7) located on both sides of the connecting cylinder (6); The connecting cylinder (6) has arc-shaped grooves (61) at both ends near the outer side of the clamping member (7). The clamping member (7) is used to give the fabric to be tested a tendency to move towards the arc-shaped groove (61) in order to clamp and fix the fabric to be tested.

2. The fixture for testing specimens using the hammer-and-spin method according to claim 1, characterized in that: The clamping member (7) includes: a fixing rod (71) fixedly connected to both sides of the connecting cylinder (6), a rotating shaft (72) fixedly connected to the fixing rod (71) towards the clamping member (7) at the other end, a telescopic rod (73) rotatably connected to the rotating shaft (72), an elastic element (75) disposed in the telescopic rod (73), and an abutment block (74) fixedly connected to the side of the telescopic rod (73) away from the rotating shaft (72); the elastic element (75) always gives the telescopic rod (73) a tendency to elongate; the abutment block (74) has an arc-shaped cross section at one end facing the connecting cylinder (6).

3. The fixture for testing specimens using the hammer-and-spin method according to claim 2, characterized in that: A first rubber pad is fixedly connected to the arc-shaped cross-section of the contact block (74).

4. The fixture for testing specimens using the hammer-and-spin method according to claim 3, characterized in that: The first rubber pad has a thickness of 1.5-3.0 mm and an anti-slip particle array on its surface.

5. The fixture for testing specimens using the hammer-and-spin method according to claim 4, characterized in that: The outer circumferential array of the rotating cylinder (5) has a limiting slider (51), and the inner circumferential surface of the connecting cylinder (6) has a sliding groove that matches the limiting slider (51).

6. The fixture for testing specimens using the hammer-and-spin method according to claim 5, characterized in that: The connecting cylinder (6) has a connecting groove at one end facing the main body (1) of the hammer wire hooking device. A magnetic ring is fixedly connected to the connecting groove. The rotating cylinder (5) has a connecting plate (52) at one end near the main body (1) of the hammer wire hooking device. The connecting plate (52) is in contact with the magnetic ring and can attract the magnetic ring.

7. The fixture for the test specimen of the hammer-and-spin hook test according to claim 6, characterized in that: The telescopic rod (73) can rotate 360° along the rotation axis (72).

8. The fixture for testing specimens using the hammer-and-spin method according to claim 1, characterized in that: The main body (1) of the hammer hooking device is equipped with a drive motor, and the output end of the drive motor is equipped with a drive rod. The rotating drum (5) is fixedly connected to the drive rod.

9. The fixture for testing specimens using the hammer-and-spin method according to claim 1, characterized in that: The arc-shaped groove (61) has a second rubber pad fixedly connected to its surface.

10. The fixture for testing specimens using the hammer-and-spin method according to claim 1, characterized in that: Both the rotating drum (5) and the connecting drum (6) are made of aluminum alloy.

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