Fabric tensile property detection device

Abstract

The invention relates to a fabric tensile strength detection device applied to the field of fabric detection, the fabric tensile strength detection device comprises a fixed clamping block, an insertion block, a movable clamping block and a positioning bolt, the fixed clamping block is fixed to the upper end of a machine base or is in sliding connection with a sliding frame through a connecting piece, and a first insertion hole horizontally penetrating through the fixed clamping block front and back is formed in the fixed clamping block; the inserting block is movably inserted into the first inserting hole, horizontal clamping gaps for clamping cloth are formed between the inner top wall and the inner bottom wall of the first inserting hole and the upper surface and the bottom surface of the inserting block respectively, the structure of the fixing clamping block, the inserting block and the like is adopted, the structure of an existing clamp is simplified, and the stable clamping effect is also achieved; the cloth tensile property detection device has the advantages that the improvement effect of simplifying the structure is achieved, the improvement can be applied to the traditional cloth tensile property detection device, the structure is simple, the use is convenient, the improvement cost is lower, and the market prospect is better.

Description

Technical Field

[0001] The present invention relates to a tensile resistance detection device, and in particular to a cloth tensile resistance detection device applied in the field of cloth detection. Background Art

[0002] Fabric is the material used to make clothing. As one of the three elements of clothing, fabric not only interprets the style and characteristics of clothing, but also directly affects the color and shape of clothing. Common types are knitting and weaving. Yarn or filament is formed into coils with knitting needles, and then the coils are strung together. Due to the coil structure characteristics of knitted fabrics, the yarn storage capacity per unit length is large, so most of them have good elasticity.

[0003] The external force that causes damage to fabrics is generally tension. The tensile strength is obtained through a tensile test. A tensile testing machine is used to increase the tension per unit time at a constant loading rate to continuously stretch the fabric until the fabric breaks or reaches a specified degree of damage. The force that ultimately destroys the fabric is the tensile limit load of the fabric. The ratio of the tensile limit load to the cross-sectional area of ​​the test material is the tensile strength. It is believed that the tensile strength is the limit of the external force that the fabric can withstand per unit area. If this limit is exceeded, the material will be destroyed by dissociation.

[0004] The traditional tensile strength testing device has a relatively simple way of fixing the fabric (usually using two clamps and bolts to clamp the fabric), and the fabric is prone to slipping or loosening, which brings inconvenience to the tensile strength testing of the fabric.

[0005] In order to solve the problem of unstable clamping of traditional fabric clamping structure, a fabric tensile strength testing device on the market adopts the design of clamping block and winding roller, which has a certain market share.

[0006] The specification of Chinese patent CN217654881U discloses a cloth tensile resistance detection device, which aims to solve the problems that the fixing method of the prior art is relatively simple, the cloth is easy to slip or loosen, which brings inconvenience to the tensile resistance detection of the cloth, and the use of manpower for tensile detection is relatively limited. The utility model uses a pressing block and a cloth pressing roller to preliminarily fix the cloth, and the operation difficulty is low. When the cloth is pulled, the cloth pressing roller drives the movable clamping block to transmit, so that the stretching of the cloth is linked with the clamping of the clamp, so that when the cloth is pulled, the clamping force of the clamp increases with the movement of the cloth, so that the cloth will not slip or loosen during the tensile resistance detection, and the effectiveness of the detection effect is guaranteed. Through the control panel, the servo motor is used to gradually move the clamp away, thereby gradually increasing the tension on the cloth, eliminating the instability of manual operation, and using the tension sensor to collect data to make the detection data more accurate.

[0007] In the above-mentioned prior art, although the clamping mechanism of the fabric tensile resistance testing device has been improved and a stable clamping effect has been achieved, the improved clamping mechanism has a complex structure and the operation of installing the fabric is relatively cumbersome, and the fabric cannot be clamped quickly and conveniently. Moreover, the traditional fabric tensile resistance testing device cannot be directly used for improvement, and the improvement cost is high, and it does not have a good promotion prospect. Summary of the invention

[0008] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to make a simple improvement to the clamping structure of the traditional cloth tensile resistance testing device so that it has good clamping stability; and at the same time, it can be improved directly on the traditional cloth tensile resistance testing device to reduce the improvement cost.

[0009] In order to solve the above problems, the present invention provides a cloth tensile strength testing device, including a machine base, a sliding frame is fixed on the upper end of the machine base, a clamp is slidably installed on the sliding frame, a driving mechanism for driving the clamp to move up and down is also slidably installed on the sliding frame, and another set of clamps is fixedly installed on the upper end of the machine base below the clamps, and the clamps include: A fixed clamp block, which is fixed to the upper end of the machine base or slidably connected to the sliding frame through a connecting piece, and a first plug hole is provided on the fixed clamp block that horizontally penetrates the fixed clamp block from front to back; A plug-in block, which is movably plugged into the first plug-in hole, and a horizontal clamping gap for clamping fabric is formed between the top wall and the bottom wall of the first plug-in hole and the upper surface and the bottom surface of the plug-in block respectively; A movable clamping block, one side of the movable clamping block and one side of the fixed clamping block form a vertical clamping gap, and one end of the plug-in block is fixed to the side wall of the movable clamping block close to the fixed clamping block; The limiting member is used to limit the plug-in block from the side after the plug-in block is plugged into the first plug hole.

[0010] In the above-mentioned fabric tensile resistance testing device, the structure of the existing clamp is simplified, and the role of stable clamping is also played, the existing technology is simplified and improved, and this improvement can be applied to the traditional fabric tensile resistance testing device. It not only has a simple structure and is easy to use, but also has a lower improvement cost and has a good market prospect.

[0011] As a further supplement to the present application, a second plug hole is horizontally arranged on one side of the fixed clamp block, and the extension direction of the second plug hole is perpendicular to the extension direction of the first plug hole. The second plug hole passes through the side wall of one side of the fixed clamp block and extends to the inner wall of the other side of the first plug hole; The limiting member comprises a positioning bolt, which is bolted in the second plug hole and movably penetrates the plug-in block.

[0012] As another improvement of the present application, two plug-in blocks are provided and distributed up and down, and one end of the two plug-in blocks is fixed to the side wall of the movable clamping block close to the fixed clamping block; There are also two first sockets and they correspond to the two plug-in blocks one by one, there are also two second sockets and they correspond to the two first sockets one by one, there are also two positioning bolts and they are bolted in the two second sockets and pass through the two plug-in blocks respectively.

[0013] As another improved supplement of the present application, a connecting handle is commonly fixed to one end of the two positioning bolts located outside the second plug hole.

[0014] As another improvement of the present application, a second magnet is fixed to one end of the positioning bolt bolted to the second insertion hole, and a first magnet magnetically attracted to the second magnet is fixed to one side of the second insertion hole.

[0015] As another improvement of the present application, the plug-in block is detachably fixed on the movable clamping block via a connecting structure.

[0016] As another improved supplement of the present application, the connection structure includes a bolt column and a threaded hole, one end of the bolt column is fixed to the side of the plug-in block close to the movable clamping block, the threaded hole is opened on the side of the movable clamping block close to the fixed clamping block, and the bolt column is threaded into the threaded hole.

[0017] As another improvement of the present application, one end of the plug-in block away from the movable clamping block is provided as a convex head protruding toward the side away from the movable clamping block, and the cross-section of the convex head is in an arc shape.

[0018] In summary, when it is necessary to clamp the fabric sample to be tested, the staff only needs to place the fabric sample in front of the fixed clamp block, then move the movable clamp block close to the fixed clamp block, and make the plug-in block plug into the first plug hole, so that the fabric sample is finally clamped by the horizontal clamping gap formed between the plug-in block and the first plug hole and the vertical clamping gap formed between the movable clamp block and the fixed clamp block, which can achieve a relatively stable and strong clamping effect, and facilitate the fabric to be stably clamped in the clamp during the fabric tensile test, so as to avoid the fabric from escaping from the clamp and affecting the test; A cloth tensile strength testing device has the following beneficial effects: The fabric tensile strength testing device simplifies the structure of the existing clamp and also plays a role of stable clamping, thus achieving the improvement effect of simplifying the structure. This improvement can be applied to the traditional fabric tensile strength testing device, which not only has a simple structure and is easy to use, but also has a lower improvement cost and has a good market prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the first implementation method of the present application; Figure 2 This is a schematic diagram of the front axle side three-dimensional structure of the clamp according to the first embodiment of the present application; Figure 3 This is a schematic diagram of the three-dimensional structure of the rear axle side of the clamp according to the first embodiment of the present application; Figure 4 This is a side sectional view of the clamp according to the first embodiment of the present application; Figure 5 This is a schematic diagram of the rear axle side three-dimensional structure of the clamp according to the second embodiment of the present application; Figure 6 This is a cross-sectional view of a fixing clamp block according to the third embodiment of the present application; Figure 7 This is a schematic diagram of the separation of the plug-in block and the movable clamping block in the fourth embodiment of the present application; Figure 8 This is a schematic diagram of the rear axle side of the clamp after the plug-in block is replaced in the fourth embodiment of the present application; Fig. 9 This is a schematic diagram of the structure of the convex head portion on the plug-in block of the fifth embodiment of the present application.

[0020] Description of the numbers in the figure: 1. Machine base; 2. Sliding frame; 3. Driving mechanism; 4. Clamp; 41. Fixed clamp block; 411. First plug hole; 412. Second plug hole; 42. Movable clamp block; 421. Threaded hole; 43. Plug block; 431. Protruding head; 44. Positioning bolt; 5. Connecting handle; 6. First magnet; 7. Second magnet; 8. Bolt column. DETAILED DESCRIPTION

[0021] The following is a detailed description of five implementation methods of the present application in conjunction with the accompanying drawings.

[0022] The first implementation method: The present invention provides a device for detecting the tensile strength of fabrics. Figure 1-Figure 4 , including a machine base 1, a sliding frame 2 is fixed on the upper end of the machine base 1, a clamp 4 is slidably installed on the sliding frame 2, and a driving mechanism 3 for driving the clamp 4 to move up and down is also slidably installed on the sliding frame 2. The driving mechanism 3 adopts a driving mechanism commonly used in the prior art and suitable for the present application (such as directly adopting a cylinder drive or a driving assembly composed of a motor, a screw, a slider penetrated by a screw, etc., or composed of other parts), which can realize the driving of the clamp 4 on the sliding frame 2 to move up and down linearly, and another group of clamps 4 is fixedly installed on the upper end of the machine base 1 below the clamp 4. When the fabric sample is clamped between the two groups of clamps 4, the driving mechanism 3 drives the clamp 4 on the sliding frame 2 to gradually rise, and uses a constant loading rate to increase the tension in unit time until the fabric sample breaks or reaches a predetermined destructive effect, thereby completing the tensile test of the fabric sample; The clamp 4 includes a fixed clamp block 41, a plug-in block 43, a movable clamp block 42 and a limiter; The fixed clamp block 41 is fixed to the upper end of the base 1 or slidably connected to the sliding frame 2 through a connecting piece. The fixed clamp block 41 is provided with a first plug hole 411 that passes through the fixed clamp block 41 horizontally from front to back. The plug-in block 43 is movably plugged into the first plug-in hole 411, and a horizontal clamping gap for clamping fabric is formed between the top wall and the bottom wall of the first plug-in hole 411 and the upper surface and the bottom surface of the plug-in block 43 respectively; One side of the movable clamp block 42 and one side of the fixed clamp block 41 form a vertical clamping gap, and one end of the plug-in block 43 is fixed to the side wall of the movable clamp block 42 close to the fixed clamp block 41; The limiting member is used to limit the plug-in block 43 from the side after the plug-in block 43 is plugged into the first plug hole 411 .

[0023] Based on the above structure, when it is necessary to clamp the fabric sample to be tested, the staff only needs to place the fabric sample in front of the fixed clamp block 41, and then move the movable clamp block 42 close to the fixed clamp block 41, and make the plug-in block 43 plug into the first plug hole 411, so that the fabric sample is finally clamped by the horizontal clamping gap formed between the plug-in block 43 and the first plug hole 411 and the vertical clamping gap formed between the movable clamp block 42 and the fixed clamp block 41, so that a relatively stable and strong clamping effect can be achieved, which is convenient for stably clamping the fabric in the clamp 4 during the fabric tensile test, so as to prevent the fabric from escaping from the clamp 4 and affecting the test. The fabric tensile strength testing device simplifies the structure of the existing clamp (clamping mechanism) and also plays a role in stable clamping, thus achieving an improved effect of simplifying the structure. This improvement can be applied to traditional fabric tensile strength testing devices, which not only has a simple structure and is easy to use, but also has a lower improvement cost and has a good market prospect.

[0024] Figure 3-Figure 4 and Figure 6 As shown, a second horizontally arranged plug hole 412 ( Figure 3-Figure 4 Not shown, here refer to Figure 6 The second plug hole 412 shown in the figure is different in that only one second plug hole 412 is provided in this embodiment. The extension direction of the second plug hole 412 is perpendicular to the extension direction of the first plug hole 411. The second plug hole 412 passes through the side wall of one side of the fixing clamp block 41 and extends to the inner wall of the other side of the first plug hole 411. The limiting member includes a positioning bolt 44, which is bolted in the second socket 412 and movably passes through the plug-in block 43. Through the setting of the positioning bolt 44, after the plug-in block 43 is plugged into and matched with the first socket 411 to clamp the fabric sample, it is only necessary to plug the positioning bolt 44 into the second socket 412 and make the positioning bolt 44 pass through the plug-in block 43 to limit the plug-in block 43, thereby avoiding the plug-in block 43 and the first socket 411 being separated during the tensile strength test of the fabric sample, resulting in the inability to conduct the test.

[0025] It should be noted that the aforementioned “this improvement can be applied to the traditional fabric tensile resistance testing device” specifically means that it is only necessary to make holes (one of the fixedly installed clamping blocks has a hole, that is, the first plug hole 411 and the second plug hole 412 are opened) on the clamping structure of the traditional fabric tensile resistance testing device (a structure of two clamping blocks and bolts, for details, refer to https: / / haokan.baidu.com / v?pd=wisenatural&vid=10071720366299240076 for a similar traditional fabric tensile resistance testing device), add a plug-in block 43 (fixedly installed on the other movably installed clamping block) and a matching positioning bolt 44, so as to achieve a simple technical improvement.

[0026] Second implementation method: Figure 5 As shown, two plug-in blocks 43 are provided and distributed up and down, and one end of the two plug-in blocks 43 is fixed to the side wall of the movable clamping block 42 close to the fixed clamping block 41; There are also two first sockets 411 that correspond one-to-one with the two plug-in blocks 43 , there are also two second sockets 412 that correspond one-to-one with the two first sockets 411 , and there are also two positioning bolts 44 that are bolted in the two second sockets 412 and pass through the two plug-in blocks 43 .

[0027] By setting two plug-in blocks 43, two first plug-in holes 411, two second plug-in holes 412 and two positioning bolts 44, the horizontal clamping gap formed by the two plug-in blocks 43 and the two first plug-in holes 411 is increased to two groups, thereby further enhancing the clamping stability of the fabric sample. Moreover, this setting does not require additional operating steps, and can be achieved by simply leaving a longer fabric sample between the fixed clamp block 41 and the movable clamp block 42.

[0028] The two positioning bolts 44 are fixed with a connecting handle 5 at one end outside the second plug hole 412 . The connecting handle 5 allows the two positioning bolts 44 to be inserted or removed at the same time, thus simplifying the operation steps for limiting the two plug-in blocks 43 .

[0029] The third implementation method: Figure 6It is shown that a second magnet 7 is fixed to one end of the positioning bolt 44 bolted to the second socket 412, and a first magnet 6 magnetically attracted to the second magnet 7 is fixed to one side of the second socket 412. Through the arrangement of the first magnet 6 and the second magnet 7, when the positioning bolt 44 is inserted into the second socket 412, the first magnet 6 and the second magnet 7 are magnetically attracted to each other, thereby enhancing the stability of the positioning bolt 44, further preventing the positioning bolt 44 from being displaced by a smaller external non-artificial pulling force, and ensuring the stability of the positioning bolt 44 itself during the fabric tensile test.

[0030] The fourth implementation method: Figure 7-Figure 8 As shown, the plug-in block 43 is detachably fixed to the movable clamping block 42 through a connecting structure; The connection structure includes a bolt column 8 and a threaded hole 421. One end of the bolt column 8 is fixed to the side of the plug-in block 43 close to the movable clamping block 42. The threaded hole 421 is provided on the side of the movable clamping block 42 close to the fixed clamping block 41. The bolt column 8 is screwed into the threaded hole 421. Through the arrangement of the bolt column 8 and the threaded hole 421, the plug-in block 43 and the movable clamping block 42 can be detachably fixed, so that the user can replace the plug-in blocks 43 of different lengths, widths and heights. Figure 5 (Before replacement, the size was smaller) and Figure 8 The plug-in blocks 43 of different sizes shown in (after replacement, the size is larger) enable the plug-in blocks 43 to clamp fabric samples of different widths and thicknesses, thereby being suitable for tensile strength detection tests of fabrics with different parameters, thereby achieving the effect of being able to detect a variety of fabrics using the fabric tensile strength detection device.

[0031] The fifth implementation method: Fig. 9 It is shown that one end of the plug-in block 43 away from the movable clamping block 42 is set as a convex head 431 that protrudes toward the side away from the movable clamping block 42, and the cross-section of the convex head 431 is arc-shaped. By setting the end of the plug-in block 43 as the convex head 431, it is possible to avoid the plug-in block 43 from generating a large shear force between the inner wall of the first socket 411 and the inner wall of the first socket 411 during the process of inserting the plug-in block 43 into the first socket 411, thereby avoiding damage to the fabric sample and affecting the test results of the tensile resistance test.

[0032] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A cloth tensile strength testing device, comprising a machine base (1), a sliding frame (2) being fixed on the upper end of the machine base (1), a clamp (4) being slidably mounted on the sliding frame (2), a driving mechanism (3) for driving the clamp (4) to move up and down being slidably mounted on the sliding frame (2), another set of clamps (4) being fixedly mounted on the upper end of the machine base (1) below the clamp (4), characterized in that: The clamp (4) comprises: A fixed clamping block (41), the fixed clamping block (41) being fixed to the upper end of the machine base (1) or being slidably connected to the sliding frame (2) via a connecting piece, and the fixed clamping block (41) being provided with a first plug hole (411) which passes through the fixed clamping block (41) horizontally from front to back; A plug-in block (43), the plug-in block (43) being movably plugged into the first plug hole (411), wherein a horizontal clamping gap for clamping fabric is formed between an inner top wall and an inner bottom wall of the first plug hole (411) and an upper surface and a bottom surface of the plug-in block (43); A movable clamping block (42), one side of the movable clamping block (42) and one side of the fixed clamping block (41) forming a vertical clamping gap, and one end of the plug-in block (43) being fixed to a side wall of the movable clamping block (42) close to the fixed clamping block (41); A limiting member, the limiting member being used to limit the plug-in block (43) from the side after the plug-in block (43) is plugged into the first plug hole (411); A second plug hole (412) is horizontally arranged on one side of the fixed clamp block (41), the extension direction of the second plug hole (412) is perpendicular to the extension direction of the first plug hole (411), and the second plug hole (412) passes through the side wall of one side of the fixed clamp block (41) and extends to the inner wall of the other side of the first plug hole (411); The limiting member comprises a positioning bolt (44), wherein the positioning bolt (44) is bolted into the second plug hole (412) and movably penetrates the plug block (43); Two plug-in blocks (43) are provided and distributed up and down, and one end of the two plug-in blocks (43) is fixed to the side wall of the movable clamping block (42) close to the fixed clamping block (41); The first plug holes (411) are also provided with two and correspond one-to-one with the two plug blocks (43); the second plug holes (412) are also provided with two and correspond one-to-one with the two first plug holes (411); the positioning bolts (44) are also provided with two and are respectively bolted in the two second plug holes (412) and pass through the two plug blocks (43); A second magnet (7) is fixed to one end of the positioning bolt (44) bolted to the second plug hole (412), and a first magnet (6) magnetically attracted to the second magnet (7) is fixed to one side of the second plug hole (412); The plug-in block (43) is detachably fixed to the movable clamping block (42) via a connecting structure, wherein the connecting structure comprises a bolt column (8) and a threaded hole (421), one end of the bolt column (8) is fixed to a side of the plug-in block (43) close to the movable clamping block (42), the threaded hole (421) is provided on a side of the movable clamping block (42) close to the fixed clamping block (41), and the bolt column (8) is screwed into the threaded hole (421); One end of the plug-in block (43) away from the movable clamping block (42) is provided as a convex head (431) protruding towards a side away from the movable clamping block (42), and the cross section of the convex head (431) is in the shape of an arc.

2. A cloth tensile strength testing device according to claim 1, characterized in that: A connecting handle (5) is commonly fixed to one end of the two positioning bolts (44) located outside the second insertion hole (412).

Images