A textile tensile strength testing device

Abstract

The invention relates to the technical field of yarn tensile strength testing, and specifically to a textile tensile strength testing device, comprising a rotating sample supply mechanism, a sample taking and placing mechanism, a tensile testing mechanism and a stand, wherein the tensile testing mechanism and the sample taking and placing mechanism are both arranged on the stand, the rotating sample supply mechanism has a sample placing frame capable of intermittent rotation, a plurality of pairs of clamps are arranged at intervals on the side of the sample placing frame, each clamp is arranged on the sample placing frame through a disassembly and assembly structure, the tensile testing mechanism comprises a clamp receiving assembly, a linear drive assembly and a tensile testing assembly, the linear drive assembly is arranged on the stand, two clamp receiving assemblies are arranged, a first clamp receiving assembly is fixedly arranged on the stand, and a second clamp receiving assembly is connected to the linear drive assembly through the tensile testing assembly, after completing the tensile test, the sample taking and placing mechanism resets the two clamps to the sample placing frame, thereby enabling the testing device to continuously perform tensile tests on a plurality of yarn samples without stopping.

Description

Technical Field

[0001] The invention relates to the technical field of yarn tensile strength testing, in particular to a textile tensile strength testing device. Background Art

[0002] The tensile strength of yarn is one of the important indicators to measure the quality of fabric. It determines the durability and stability of the fabric during use. Through the tensile strength test, we can understand the performance indicators of the yarn such as strength, elongation, elasticity, etc., which provides an important reference for the production of textiles.

[0003] The Chinese invention patent with the announcement number CN118408811B discloses a tensile strength test device and process for textile yarns, including a frame, an electric guide rail, a tension force sensor, a moving block, an L-shaped plate and a fixed block, etc. The frame is connected to the electric guide rail on the top, the slider of the electric guide rail is connected to the tension force sensor, the moving block is connected to the tension force sensor, the electric guide rail is connected to the L-shaped plate, and the L-shaped plate is connected to the fixed block. The tensile strength of the yarn is tested by the tension force sensor. After the test is completed, the output shaft of the stepper motor is controlled to rotate, so that the clamping plate rotates around the stepper motor, and the yarn is wound around the clamping block on the moving block. This reciprocating process can automatically wind the yarn, thereby improving work efficiency.

[0004] Although the above technical solution solves the problem of inefficiency caused by manually fixing the yarn sample to the clamp, during the process of fixing the yarn sample to the clamp, the testing device is in standby mode, and can only perform tensile test on a single yarn sample at a time. When the number of yarn samples to be tested is large, the testing device will be in standby mode for a long time, resulting in increased energy consumption and equipment loss, and it is difficult to further improve the efficiency. Summary of the invention

[0005] In order to make up for the above shortcomings, the present invention provides a textile tensile strength testing device to solve the problem of increased energy consumption and reduced efficiency due to the need to wait for the yarn sample and the clamp to be fixed before each tensile test as mentioned in the above background technology.

[0006] The technical solution of the present invention is:

[0007] A textile tensile strength testing device comprises a rotating sample supply mechanism, a sample taking and placing mechanism, a tensile testing mechanism and a stand, wherein the stand is spaced apart from the rotating sample supply mechanism, and the tensile testing mechanism and the sample taking and placing mechanism are both arranged on the stand;

[0008] The rotating sample feeding mechanism has a sample placing frame capable of intermittent rotation, and a plurality of pairs of clamps are arranged at intervals on the side of the sample placing frame, and the two ends of the yarn sample are respectively positioned on two pairs of clamps, and the plurality of pairs of clamps are distributed in a circle around the rotation axis of the sample placing frame, and each of the clamps is arranged on the sample placing frame through a disassembly structure;

[0009] The tension detection mechanism includes a clamp receiving assembly, a linear drive assembly and a tension detection assembly, wherein the linear drive assembly is arranged on a stand, and two clamp receiving assemblies are arranged, wherein the first clamp receiving assembly is fixedly arranged on the stand, and the second clamp receiving assembly is connected to the linear drive assembly through the tension detection assembly, so that the tension detection assembly can detect the tension exerted on the yarn sample;

[0010] The multiple pairs of clamps on the sample placing frame are sequentially delivered to the two clamp receiving components through the sample taking and placing mechanism, and the linear driving component drives the second clamp receiving component away from the first clamp receiving component through the tension detection component, so that the yarn samples on the pair of clamps are stretched;

[0011] The sample taking and placing mechanism resets a pair of clamps on the two clamp receiving assemblies to the sample placing frame after the tension test of the yarn sample is completed and the second clamp receiving assembly is reset.

[0012] Preferably, the sample placing frame is cylindrical, and the rotating sample supply mechanism further comprises a support frame, a transmission shaft and a servo drive assembly, wherein the transmission shaft is rotatably arranged on the support frame, the servo drive assembly is arranged on the support frame and connected to the transmission shaft, and the servo drive assembly drives the sample placing frame to rotate intermittently through the transmission shaft;

[0013] A pair of two clamps are spaced apart along the axial direction of the sample rack, the sample taking and placing mechanism drives the clamp to reciprocate in the radial direction of the sample rack, and the linear drive component drives the second clamp receiving component to reciprocate along the axial direction of the sample rack.

[0014] Preferably, the clamp comprises a winding post, a wire clamping sleeve and a wire clamping disc, the winding post is driven by the sample taking and placing mechanism to be connected and separated from the sample placing frame through the disassembly structure, the outer diameter of the winding post is the same as the inner diameter of the wire clamping sleeve, the winding post is threadedly connected with the wire clamping sleeve, an outer wall at one end of the winding post is provided with an outer thread, and an inner wall of the wire clamping sleeve is provided with an inner thread matching the outer thread;

[0015] The clamping disc is coaxially arranged at the other end of the winding post, and the outer diameter of the clamping disc is larger than the outer diameter of the winding post. The winding post is screwed into the clamping sleeve so that the clamping disc and the clamping sleeve clamp and fix the yarn sample wound on the winding post.

[0016] Preferably, a plurality of protrusions are circumferentially spaced apart at one end of the clamping disc close to the clamping sleeve, and the protrusions are connected to the side of the winding post. A follower ring is rotatably provided at one end of the clamping sleeve close to the clamping disc, and a plurality of grooves for inserting the protrusions are circumferentially spaced apart on the follower ring. The protrusions push the yarn sample into the grooves, and clamp the yarn sample as the winding post rotates toward the clamping sleeve.

[0017] Preferably, the disassembly and assembly structure includes a loading and unloading column with one end connected to the side of the sample frame, and a loading and unloading hole arranged on the winding column, the loading and unloading column is arranged along the radial direction of the sample frame, and the loading and unloading hole is located at the front end of the winding column close to the sample frame.

[0018] Preferably, the sample taking and placing mechanism comprises a transmission rod, a push-pull cylinder and an abutment assembly, wherein the push-pull cylinder is arranged on the stand, the transmission rod is connected to the push-pull cylinder, and the transmission rod is located in the radial direction of the sample placing frame, and the abutment assembly is arranged at the front end of the transmission rod close to the sample placing frame;

[0019] A matching hole for inserting an abutment assembly and a transmission rod is provided at the tail end of the winding column close to the stand. The abutment assembly abuts against the wall of the matching hole so that the push-pull cylinder can drive the clamp to reciprocate with the help of the transmission rod and the abutment assembly.

[0020] Preferably, the clamp receiving assembly comprises a limit block and an annular magnet, the limit block is provided with a limit hole for the clamping sleeve to enter at the front end close to the layout frame, the limit block is provided with a tail hole for the transmission rod to pass through at the tail end, and the tail hole is connected to the limit hole;

[0021] The annular magnet is arranged at the tail end of the limiting hole, and is used to attract the iron winding column and the clamping sleeve to prevent the clamp in the limiting hole from falling out during the tensile test;

[0022] The limit block of the first clamp receiving assembly is connected to the stand, and the limit block of the second clamp receiving assembly is connected to the tension detection mechanism.

[0023] Preferably, a sample clearance hole for the yarn sample to enter is provided on one side of the two limiting blocks that are close to each other, and the sample clearance hole passes through the front end of the limiting block and is connected with the limiting hole.

[0024] Preferably, the abutment assembly comprises a damping rod, a support plate, a reset rod and a reset ring, the transmission rod is provided with a core hole penetrating through its front end, and the front end of the transmission rod is provided with a countersunk hole connected to the core hole, a side hole connected to the countersunk hole is provided on the side wall of the transmission rod, the damping rod is plugged into the core hole, one end of the support plate is hinged to the front end of the damping rod, and the other end of the support plate passes through the side hole;

[0025] The hole wall of the matching hole is provided with an annular groove for inserting the support plate, and the damping rod moves into the core hole so that the angle between the support plate and the damping rod tends to 90° until the support plate extends out of the side hole and inserts into the annular groove;

[0026] A strip hole connected to the core hole is provided on the side wall of the transmission rod, one end of the reset rod is connected to the damping rod, the reset rod is slidably inserted into the strip hole, and the reset rod protrudes from the side wall of the transmission rod, the reset ring is slidably sleeved on the transmission rod, and the reset ring is fixedly connected to the stand, and during the resetting process of the transmission rod, the reset ring pushes the reset rod to separate the support plate inserted into the annular groove from the winding column.

[0027] Preferably, a piston hole connected to the core hole is provided at one end of the transmission rod close to the strip hole, a piston is slidably arranged in the piston hole, the piston is connected to the damping rod through the piston rod, and a one-way damping valve connected to the piston hole is provided on the side wall of the transmission rod.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] Firstly, the present invention removes two pairs of clamps on the sample placing frame through the sample taking and placing mechanism from the sample placing frame, and delivers the two clamps to two clamp receiving components respectively, and the linear drive component pulls one of the clamp receiving components with the help of the tension detection mechanism, so that the yarn samples fixed by the two clamps are stretched, and the tension detection mechanism performs tension detection, after completing the tension test, the sample taking and placing mechanism resets the two clamps to the sample placing frame, and the sample placing frame rotates the next pair of clamps to the taking and placing position of the sample taking and placing mechanism, waiting for the next tension test, thereby realizing continuous tension testing of multiple yarn samples;

[0030] Secondly, the clamp of the present invention is detachably connected to the sample frame through a disassembly structure. During the tensile test, a pair of clamps can be removed after use and installed on the sample frame after re-fixing the yarn sample, so that the detection equipment can perform tensile tests on many yarn samples without stopping. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the textile tensile strength testing device of the present invention;

[0032] Figure 2 It is a structural schematic diagram of the rotary sample supply mechanism of the present invention;

[0033] Figure 3 It is a structural schematic diagram of the sample rack of the present invention;

[0034] Figure 4 It is a structural schematic diagram of the clamp of the present invention;

[0035] Figure 5 An exploded view of the clamp of the present invention;

[0036] Figure 6 is a cross-sectional view of a winding column of the present invention;

[0037] Figure 7 It is a schematic structural diagram of the limit block of the present invention;

[0038] Figure 8 For the present invention Figure 7 A cross-sectional view of

[0039] Fig. 9 It is a structural schematic diagram of the abutment assembly of the present invention;

[0040] Fig.10 It is a structural schematic diagram of the transmission rod of the present invention;

[0041] Fig.11 For the present invention Fig.10 A cross-sectional view of

[0042] Fig.12 It is a schematic structural diagram of the damping rod of the present invention.

[0043] In the figure:

[0044] 1-rotating sample supply mechanism; 2-sample taking and placing mechanism; 3-one-way damping valve; 4-tension detection mechanism; 5-stand; 6-clamp; 7-bump; 8-piston rod; 9-follow-up ring; 10-groove; 11-loading and unloading column; 12-loading and unloading hole; 13-matching hole; 14-limiting hole; 15-tail hole; 16-sample clearance hole; 17-core hole; 18-countersunk hole; 19-side hole; 20-annular groove; 21-strip hole; 22-piston hole; 23-piston;

[0045] 101-lofting frame; 102-support frame; 103-transmission shaft; 104-servo drive assembly;

[0046] 201-transmission rod; 202-push-pull cylinder; 203-abutment assembly;

[0047] 2031-damping rod; 2032-support plate; 2033-reset rod; 2034-reset ring;

[0048] 401- fixture receiving component; 402- linear drive component; 403- tension detection component;

[0049] 4011-limiting block; 4012-ring magnet;

[0050] 601-winding column; 602-clip sleeve; 603-clip reel. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] See also Figure 1-12 The present invention describes the above technical solution in detail through the following embodiments:

[0053] A textile tensile strength testing device comprises a rotating sample feeding mechanism 1, a sample taking and placing mechanism 2, a tensile testing mechanism 4 and a stand 5, wherein the stand 5 is spaced apart from the rotating sample feeding mechanism 1, and the tensile testing mechanism 4 and the sample taking and placing mechanism 2 are both arranged on the stand 5;

[0054] The rotating sample feeding mechanism 1 has a sample frame 101 that can rotate intermittently. A plurality of pairs of clamps 6 are arranged at intervals on the side of the sample frame 101. The two ends of the yarn sample are respectively positioned on two pairs of clamps 6. The plurality of pairs of clamps 6 are distributed in a circle around the rotation axis of the sample frame 101, and each clamp 6 is arranged on the sample frame 101 through a disassembly structure.

[0055] The tension detection mechanism 4 includes a clamp receiving assembly 401, a linear drive assembly 402 and a tension detection assembly 403. The linear drive assembly 402 is arranged on the stand 5. Two clamp receiving assemblies 401 are arranged. The first clamp receiving assembly 401 is fixedly arranged on the stand 5. The second clamp receiving assembly 401 is connected to the linear drive assembly 402 through the tension detection assembly 403, so that the tension detection assembly 403 can detect the tension exerted on the yarn sample.

[0056] The multiple pairs of clamps 6 on the sample rack 101 are sequentially delivered to the two clamp receiving components 401 through the sample taking and placing mechanism 2, and the linear driving component 402 drives the second clamp receiving component 401 away from the first clamp receiving component 401 through the tension detection component 403, so that the yarn samples on the pair of clamps 6 are stretched;

[0057] After the tension test of the yarn sample is completed and the second clamp receiving assembly 401 is reset, the sample taking and placing mechanism 2 resets the pair of clamps 6 on the two clamp receiving assemblies 401 to the sample placing frame 101 .

[0058] Specifically, the sample rack 101 rotates intermittently, so that the multiple pairs of clamps 6 on the sample rack 101 rotate to the pick-up and placement position of the sample pick-up and placement mechanism 2 in sequence, and the sample pick-up and placement mechanism 2 grabs the two pairs of clamps 6 at the pick-up and placement position, and delivers the two clamps 6 containing the yarn samples to the two clamp receiving components 401 respectively. Subsequently, the sample pick-up and placement mechanism 2 separates from the two clamps 6, and the clamp receiving component 401 positions the clamps 6. The linear drive component 402 pulls the second clamp receiving component 401 with the help of the tension detection component 403, so that the two clamps 6 are separated from each other, and the yarn sample is stretched. At this time, the tension detection component 403 can detect the tension exerted on the yarn sample. When the tension test is completed, the second clamp receiving component 401 is reset, and the sample pick-up and placement mechanism 2 grabs the two clamps 6 again, and resets the two clamps 6 to the sample rack 101. Subsequently, the sample rack 101 rotates, so that the next pair of clamps 6 rotate to the pick-up and placement position, and another yarn sample is subjected to a tension test. During the tensile test, the pair of clamps 6 can be removed after use, and the yarn sample to be tested can be fixed by the pair of clamps 6, and then the pair of clamps 6 can be installed on the sample rack 101 again, so as to realize continuous detection of multiple yarn samples. When the yarn samples are replaced, the detection equipment does not need to be stopped and can run continuously, so as to realize tensile testing of multiple yarn samples at high and low levels.

[0059] The tension detection mechanism 4 generally includes an electronic tensile gauge and a fastening component that connects the electric tensile machine with the pulling mechanism and the second clamp receiving assembly 401. The pulling mechanism is used to drive the second clamp receiving assembly 401 to perform linear reciprocating motion, and it can use any one of a hydraulic cylinder, an air cylinder, a lead screw, etc. as a power component. The specific structure of the pulling mechanism can refer to the drawings in the specification or the power components of the existing tension detection equipment, and will not be described in detail here.

[0060] It should be noted that, since the weight borne by the tension detection mechanism 4 will change after the clamp 6 is delivered to the second clamp receiving assembly 401, the tension detection mechanism 4 should be reset to zero at this time. In addition, if the weight of the yarn sample is large, the weight of the yarn sample should also be taken into consideration, and the above influence can be eliminated by manually debugging the tension detection mechanism 4 or automatically debugging the tension detection mechanism 4 using corresponding software.

[0061] The sample placing frame 101 is cylindrical, and the rotating sample supply mechanism 1 further includes a support frame 102, a transmission shaft 103 and a servo drive assembly 104. The transmission shaft 103 is rotatably arranged on the support frame 102. The servo drive assembly 104 is arranged on the support frame 102 and connected to the transmission shaft 103. The servo drive assembly 104 drives the sample placing frame 101 to rotate intermittently through the transmission shaft 103.

[0062] A pair of two clamps 6 are spaced apart along the axial direction of the sample rack 101 , the sample placement mechanism 2 drives the clamps 6 to reciprocate in the radial direction of the sample rack 101 , and the linear drive component 402 drives the second clamp receiving component 401 to reciprocate along the axial direction of the sample rack 101 .

[0063] The servo drive assembly 104 generally includes a servo motor and a transmission pair connecting the servo motor and the transmission shaft 103, such as a gear transmission pair, a synchronous belt-synchronous pulley transmission pair, a gear-chain transmission pair, etc.

[0064] The clamp 6 includes a winding post 601, a clamping sleeve 602 and a clamping disc 603. The winding post 601 is driven by the sample taking and placing mechanism 2 to connect and separate with the sample placing frame 101 through the disassembly structure. The outer diameter of the winding post 601 is the same as the inner diameter of the clamping sleeve 602. The winding post 601 is threadedly connected with the clamping sleeve 602. An outer wall at one end of the winding post 601 is provided with an outer thread, and an inner wall of the clamping sleeve 602 is provided with an inner thread matching the outer thread.

[0065] The wire clamping disc 603 is coaxially arranged at the other end of the winding post 601, and the outer diameter of the wire clamping disc 603 is larger than the outer diameter of the winding post 601. The winding post 601 is screwed into the wire clamping sleeve 602 to make the wire clamping disc 603 approach the wire clamping sleeve 602 until the yarn sample located between the wire clamping disc 603 and the wire clamping sleeve 602 on the winding post 601 is clamped and fixed. The clamping force can be adjusted by the length of the winding post 601 screwed into the wire clamping sleeve 602. This clamp 6 facilitates the fixing and release of the yarn sample by the clamp 6, and also facilitates the adjustment of the clamping force of the clamp 6.

[0066] In addition, anti-skid patterns may be provided on the sides of the clamping disc 603 and the clamping sleeve 602 to facilitate manual rotation of the clamping disc 603, or the side profile of the clamping disc 603 may be provided as an equihexagon to facilitate rotation of the clamping disc 603 using a wrench.

[0067] In order to facilitate the clamping sleeve 602 and the clamping disc 603 to firmly clamp and fix the yarn sample, a plurality of protrusions 7 are arranged at intervals along the circumferential direction on one end of the clamping disc 603 close to the clamping sleeve 602, and the protrusions 7 are connected to the side of the winding post 601. A follower ring 9 is rotatably arranged on one end of the clamping sleeve 602 close to the clamping disc 603, and a plurality of grooves 10 for inserting the protrusions 7 are arranged at intervals along the circumferential direction on the follower ring 9. The protrusions 7 push the yarn sample into the grooves 10, and clamp and fix the yarn sample as the winding post 601 rotates toward the clamping sleeve 602.

[0068] The shapes of the protrusion 7 and the groove 10 can be strip-shaped, wavy-shaped, etc., which are not limited here.

[0069] The disassembly structure includes a loading and unloading column 11 connected to the side of the sample frame 101 at one end, and a loading and unloading hole 12 arranged on the winding column 601. The loading and unloading column 11 is arranged along the radial direction of the sample frame 101, and the loading and unloading hole 12 is located at the front end of the winding column 601 close to the sample frame 101, that is, the clamp 6 is assembled and separated from the sample frame 101 by plugging and unplugging with the loading and unloading column 11. It should be noted that the sample frame 101 rotates intermittently at a low speed, so the clamp 6 of the loading and unloading column 11 is difficult to fall off from the loading and unloading column 11 under the action of centrifugal force. If it is necessary to further prevent the clamp 6 from detaching from the loading and unloading column 11 under the action of centrifugal force, it is preferred to install a magnet at the end of the loading and unloading column 11, and use the magnet to attract the iron clamp 6 to prevent the clamp 6 from falling off from the loading and unloading column 11 under the action of centrifugal force. The structure is simple and the cost is low, and it will not have a negative impact on the clamp 6 being set on the loading and unloading column 11.

[0070] The sample taking and placing mechanism 2 includes a transmission rod 201, a push-pull cylinder 202 and an abutment assembly 203. The push-pull cylinder 202 is arranged on the stand 5. The transmission rod 201 is connected to the push-pull cylinder 202. The transmission rod 201 is located in the radial direction of the sample rack 101. The abutment assembly 203 is arranged at the front end of the transmission rod 201 close to the sample rack 101.

[0071] A matching hole 13 for inserting the abutment assembly 203 and the transmission rod 201 is provided at the tail end of the winding column 601 near the stand 5. The abutment assembly 203 abuts against the wall of the matching hole 13 so that the push-pull cylinder 202 can drive the clamp 6 to reciprocate with the help of the transmission rod 201 and the abutment assembly 203.

[0072] The clamp receiving assembly 401 includes a limit block 4011 and an annular magnet 4012. The front end of the limit block 4011 close to the layout frame 101 is provided with a limit hole 14 for the clamping sleeve 602 to enter. The rear end of the limit block 4011 is provided with a tail hole 15 for the transmission rod 201 to pass through. The tail hole 15 is connected to the limit hole 14.

[0073] The annular magnet 4012 is disposed at the rear end of the limiting hole 14, and the annular magnet 4012 is used to attract the iron winding column 601 and the clamping sleeve 602 to prevent the clamp 6 in the limiting hole 14 from falling out during the tensile test;

[0074] The limit block 4011 of the first clamp receiving assembly 401 is connected to the stand 5 , and the limit block 4011 of the second clamp receiving assembly 401 is connected to the tension detection mechanism 4 .

[0075] The size or the inner diameter of the limiting hole 14 is slightly larger than the outer diameter of the clamping sleeve 602 , and the contour of the limiting hole 14 is adapted to the outer shape of the clamping sleeve 602 .

[0076] A sample clearance hole 16 for the yarn sample to enter is provided on the adjacent side of the two limit blocks 4011. The sample clearance hole 16 passes through the front end of the limit block 4011 and is connected with the limit hole 14, that is, the bottom of the upper limit block 4011 and the top of the lower limit block 4011 are provided with a sample clearance hole 16. When a pair of two clamps 6 enter the limit holes 14 of the two limit blocks 4011 respectively, the yarn sample connecting the two clamps 6 passes through the two sample clearance holes 16 to connect the two clamps 6. The setting of the sample clearance hole 16 enables the two clamps 6 connected by the yarn sample to fully enter the limit hole 14, thereby facilitating the stable limiting of the clamp 6 by the limit block 4011.

[0077] The abutment assembly 203 includes a damping rod 2031, a support plate 2032, a reset rod 2033 and a reset ring 2034. The transmission rod 201 is provided with a core hole 17 penetrating the front end thereof, and the front end of the transmission rod 201 is provided with a countersunk hole 18 communicating with the core hole 17. The side wall of the transmission rod 201 is provided with a side hole 19 communicating with the countersunk hole 18. The damping rod 2031 is plugged into the core hole 17, one end of the support plate 2032 is hinged to the front end of the damping rod 2031, and the other end of the support plate 2032 passes through the side hole 19.

[0078] The wall of the matching hole 13 is provided with an annular groove 20 for inserting the support plate 2032. The damping rod 2031 moves into the core hole 17 so that the angle between the support plate 2032 and the damping rod 2031 tends to 90 degrees until the support plate 2032 extends out of the side hole 19 and inserts into the annular groove 20. That is, in the initial state, the front end of the damping rod 2031 protrudes from the front end of the transmission rod 201. When the transmission rod 201 is inserted into the matching hole 13 and the damping rod 2031 contacts the hole wall at the end of the matching hole 13, as the transmission rod 201 continues to be inserted, the damping rod 2031 031 overcomes the friction between it and the wall of the core hole 17 and moves into the core hole 17, so that the support plate 2032, which was originally tilted backward, gradually rotates forward. During this process, the end of the support plate 2032 gradually moves away from the transmission rod 201 and extends out of the side hole 19 until the damping rod 2031 completely enters the core hole 17. At this time, the end of the support plate 2032 is inserted into the annular groove 20 on the wall of the matching hole 13 at the tail end of the winding column 601, so that the transmission rod 201 can pull the clamp 6 when resetting, so that the clamp 6 is detached from the loading and unloading column 11 on the sample frame 101.

[0079] In addition, a strip hole 21 connecting to the core hole 17 is provided on the side wall of the transmission rod 201, one end of the reset rod 2033 is connected to the damping rod 2031, the reset rod 2033 is slidably inserted into the strip hole 21, and the reset rod 2033 protrudes from the side wall of the transmission rod 201, the reset ring 2034 is slidably sleeved on the transmission rod 201, and the reset ring 2034 is fixedly connected to the stand 5. During the resetting process of the transmission rod 201, the reset ring 2034 pushes the reset rod 2033. Specifically, when the clamp 6 is inserted into the limiting hole 14, the reset ring 2034 pushes the reset rod 2033 to reset the support plate 2032 and disengage from the annular groove 20, so that the transmission rod 201 can be separated from the winding column 601, leaving the clamp 6 in the limiting hole 14.

[0080] Further optimized in the above embodiment is that a piston hole 22 connected to the core hole 17 is provided at one end of the transmission rod 201 close to the strip hole 21, a piston 23 is slidably arranged in the piston hole 22, the piston 23 is connected to the damping rod 2031 through the piston rod 8, and a one-way damping valve 3 connected to the piston hole 22 is provided on the side wall of the transmission rod 201.

[0081] When the tension test is completed, the push-pull cylinder 202 drives the transmission rod 201 to pass through the tail hole 15 at the tail end of the limit block 4011 and insert into the matching hole 13 at the tail end of the winding column 601. At this time, since the damping rod 2031 is pushed out during the resetting process of the transmission rod 201, the front end of the damping rod 2031 protrudes from the front end of the transmission rod 201. When the damping rod 2031 collides with the hole wall at the end of the matching hole 13, due to the friction between the damping rod 2031 and the hole wall of the core hole 17, and the pressure of the gas in the piston hole 22, the transmission rod 201 can push the clamp 6 with the help of the damping rod 2031 until the corresponding loading and unloading column 11 on the layout frame 101 is inserted into the loading and unloading hole 12 at the front end of the clamp 6.

[0082] When it is necessary to grab the clamp 6, after the front end of the damping rod 2031 contacts the wall of the matching hole 13 at the rear end of the clamp 6 on the sample frame 101, the push-pull cylinder 202 continues to push the transmission rod 201, so that the damping rod 2031 compresses the gas in the piston hole 22 under the push of the reaction force of the clamp 6. When the gas pressure in the piston hole 22 is greater than the opening pressure of the one-way damping valve 3, the gas in the piston hole 22 is discharged along the reverse path of the one-way damping valve 3, and the damping rod 2031 can move further into the core hole 17 until the support plate 2032 extends and is inserted into the annular groove 20, so that when the transmission rod 201 moves toward the limit block 4011, the clamp 6 on the sample frame 101 can be brought into the limit hole 14 of the limit block 4011. When the clamp 6 enters the limiting hole 14, the reset rod 2033 is pushed by the fixed reset ring 2034, and drives the damping rod 2031 to reset, so that the support plate 2032 is separated from the annular groove 20, so that the transmission rod 201 can be separated from the clamp 6 in the limiting hole 14. When the reset ring 2034 pushes the reset rod 2033, as the piston 23 moves, the external gas smoothly enters the piston hole 22 through the forward path of the one-way damping valve 3.

[0083] By adding a one-way damping valve 3, the resistance of the damping rod 2031 to the movement of the core hole 17 is increased, thereby preventing the transmission rod 201 from pushing the clamp 6 in the limit hole 14 toward the loading and unloading column 11 on the sample rack 101, and the support plate 2032 is driven by the damping rod 2031 to extend outward, resulting in the transmission rod 201 being unable to detach from the clamp 6 on the loading and unloading column 11 after the clamp 6 is reset to the sample rack 101 after use, resulting in the sample placement mechanism 2 being unable to grab the clamp 6 again.

[0084] Regarding the size and opening pressure parameters of the one-way damping valve 3, reference may be made to the RSE damping type anti-vibration one-way valve, such as its diameter of 6 to 32 mm and its opening pressure of 0.3 Bar, which parameters meet the use requirements of this embodiment.

[0085] Working principle:

[0086] The push-pull cylinder 202 drives the transmission rod 201 to pass through the tail hole 15 and the limit hole 14 of the limit block 401 and move toward the layout frame 101. The front end of the transmission rod 201 is inserted into the matching hole 13 at the tail end of the fixture 6 on the rotating frame. After the damping rod 2031 protruding from the front end of the transmission rod 201 contacts the hole wall at the end of the matching hole 13, as the transmission rod 201 continues to be inserted, the damping rod 2031 overcomes the friction between it and the hole wall of the core hole 17 and moves into the core hole 17. At the same time, the tail end of the damping rod 2031 pushes the piston hole 2031 through the piston rod 8. 2, when the gas pressure in the piston hole 22 is greater than the opening pressure of the one-way damping valve 3, the gas in the piston hole 22 is discharged through the one-way damping valve 3 as the damping rod 2031 is inserted into the core hole 17, until the front end of the damping rod 2031 is flush with the front end of the transmission rod 201. During the process, under the limitation and guidance of the side hole 19 on the side wall of the front end of the transmission rod 201, the support plate 2032 at the front end of the damping rod 2031 is pushed out of the countersunk hole 18 at the front end of the transmission rod 201 and abuts against the hole wall on the side of the assembly hole 13 at the rear end of the clamp 6. Subsequently, the push-pull cylinder 202 drives the transmission rod 201 to reset. When the clamp 6 enters the limiting hole 14 of the limiting block 4011, the reset rod 2033 at the rear end of the damping rod 2031 is pushed by the reset ring 2034, so that the damping rod 2031 is reset, thereby separating the support plate 2032 from the clamp 6, and the transmission rod 201 is separated from the clamp 6 and reset. The linear drive component 402 drives the upper limit block 4011 away from the lower limit block 4011 with the help of the tension detection component 403, so that the two clamps 6 connected to the yarn samples on the two limit blocks 4011 move away from each other, thereby stretching the yarn samples separately, and measuring the tension exerted on the yarn sample through the tension detection component 403.

[0087] When the tension test is completed, the push-pull cylinder 202 drives the transmission rod 201 to move toward the sample rack 101 again. During the process, the transmission rod 201 pushes the clamp 6 through the damping rod 2031 protruding from its front end until the loading and unloading column on the sample rack 101 is re-inserted into the loading and unloading hole 12 at the front end of the clamp 6. After the transmission rod 201 exits the matching hole 13 and separates from the clamp 6, the sample rack 101 rotates to align the matching holes 13 at the tail end of the next pair of clamps 6 containing yarn samples with the transmission rod 201, and another tension test is performed.

[0088] It is known from common technical knowledge that the present application can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present application or within the scope equivalent to the present application are included in the present application.

Claims

1. A textile tensile strength testing device, characterized in that: The invention comprises a rotating sample supply mechanism (1), a sample taking and placing mechanism (2), a tension detection mechanism (4) and a stand (5), wherein the stand (5) is arranged at a distance from the rotating sample supply mechanism (1), and the tension detection mechanism (4) and the sample taking and placing mechanism (2) are both arranged on the stand (5); The rotating sample supply mechanism (1) comprises a sample frame (101) capable of intermittent rotation, a plurality of pairs of clamps (6) are arranged at intervals on the side of the sample frame (101), two ends of the yarn sample are respectively positioned on two pairs of clamps (6), the plurality of pairs of clamps (6) are distributed in a circle around the rotation axis of the sample frame (101), and each of the clamps (6) is arranged on the sample frame (101) through a disassembly structure; The tension detection mechanism (4) comprises a clamp receiving component (401), a linear drive component (402) and a tension detection component (403), wherein the linear drive component (402) is arranged on a stand (5), and two clamp receiving components (401) are arranged, wherein the first clamp receiving component (401) is fixedly arranged on the stand (5), and the second clamp receiving component (401) is connected to the linear drive component (402) via the tension detection component (403), so that the tension detection component (403) can detect the tension exerted on the yarn sample; The plurality of pairs of clamps (6) on the sample placing frame (101) are sequentially delivered to the two clamp receiving components (401) through the sample taking and placing mechanism (2), and the linear driving component (402) drives the second clamp receiving component (401) away from the first clamp receiving component (401) through the tension detection component (403), so that the yarn samples on the pair of clamps (6) are stretched; After the yarn sample has completed tension testing and the second clamp receiving assembly (401) has been reset, the sample taking and placing mechanism (2) resets a pair of clamps (6) on the two clamp receiving assemblies (401) onto the sample placing frame (101).

2. A textile tensile strength testing device according to claim 1, characterized in that: The sample placing frame (101) is cylindrical, and the rotating sample supply mechanism (1) further comprises a support frame (102), a transmission shaft (103) and a servo drive assembly (104), wherein the transmission shaft (103) is rotatably arranged on the support frame (102), the servo drive assembly (104) is arranged on the support frame (102) and connected to the transmission shaft (103), and the servo drive assembly (104) drives the sample placing frame (101) to rotate intermittently via the transmission shaft (103); A pair of two clamps (6) are spaced apart along the axial direction of the sample rack (101); the sample taking and placing mechanism (2) drives the clamp (6) to reciprocate in the radial direction of the sample rack (101); and the linear drive component (402) drives the second clamp receiving component (401) to reciprocate along the axial direction of the sample rack (101).

3. A textile tensile strength testing device according to claim 1, characterized in that: The clamp (6) comprises a winding post (601), a wire clamping sleeve (602) and a wire clamping disc (603); the winding post (601) is driven by the sample taking and placing mechanism (2) to be connected and separated from the sample placing frame (101) through a disassembly structure; the outer diameter of the winding post (601) is the same as the inner diameter of the wire clamping sleeve (602); the winding post (601) and the wire clamping sleeve (602) are threadedly connected; an outer wall of one end of the winding post (601) is provided with an outer thread, and an inner wall of the wire clamping sleeve (602) is provided with an inner thread matching the outer thread; The clamping disc (603) is coaxially arranged at the other end of the winding post (601), and the outer diameter of the clamping disc (603) is larger than the outer diameter of the winding post (601). The winding post (601) is screwed into the clamping sleeve (602) so that the clamping disc (603) and the clamping sleeve (602) can clamp and fix the yarn sample wound on the winding post (601).

4. A textile tensile strength testing device according to claim 3, characterized in that: A plurality of protrusions (7) are arranged at intervals along the circumferential direction on one end of the clamping disc (603) close to the clamping sleeve (602); the protrusions (7) are connected to the side of the winding column (601); a follower ring (9) is rotatably arranged on one end of the clamping sleeve (602) close to the clamping disc (603); a plurality of grooves (10) for inserting the protrusions (7) are arranged at intervals along the circumferential direction on the follower ring (9); the protrusions (7) push the yarn sample into the grooves (10), and as the winding column (601) rotates toward the clamping sleeve (602), the yarn sample is clamped and fixed.

5. A textile tensile strength testing device according to claim 4, characterized in that: The disassembly and assembly structure comprises a loading and unloading column (11) having one end connected to the side of the sample frame (101), and a loading and unloading hole (12) arranged on the winding column (601), wherein the loading and unloading column (11) is arranged along the radial direction of the sample frame (101), and the loading and unloading hole (12) is located at the front end of the winding column (601) close to the sample frame (101).

6. A textile tensile strength testing device according to claim 4, characterized in that: The sample taking and placing mechanism (2) comprises a transmission rod (201), a push-pull cylinder (202) and an abutment assembly (203); the push-pull cylinder (202) is arranged on the stand (5); the transmission rod (201) is connected to the push-pull cylinder (202); the transmission rod (201) is located in the radial direction of the sample placing frame (101); and the abutment assembly (203) is arranged at the front end of the transmission rod (201) close to the sample placing frame (101); The tail end of the winding column (601) close to the stand (5) is provided with a matching hole (13) for inserting the abutment assembly (203) and the transmission rod (201), and the abutment assembly (203) abuts against the wall of the matching hole (13) so that the push-pull cylinder (202) can drive the clamp (6) to reciprocate with the help of the transmission rod (201) and the abutment assembly (203).

7. A textile tensile strength testing device according to claim 6, characterized in that: The clamp receiving assembly (401) comprises a limit block (4011) and an annular magnet (4012); a limit hole (14) for a clamping sleeve (602) to enter is arranged at the front end of the limit block (4011) close to the layout frame (101); a tail hole (15) for a transmission rod (201) to pass through is arranged at the tail end of the limit block (4011); and the tail hole (15) is connected to the limit hole (14); The annular magnet (4012) is arranged at the rear end of the limiting hole (14), and the annular magnet (4012) is used to attract the iron winding column (601) and the wire clamping sleeve (602) to prevent the clamp (6) in the limiting hole (14) from falling out during the tensile test; The limit block (4011) of the first clamp receiving assembly (401) is connected to the stand (5), and the limit block (4011) of the second clamp receiving assembly (401) is connected to the tension detection mechanism (4).

8. A textile tensile strength testing device according to claim 7, characterized in that: A sample clearance hole (16) for the yarn sample to enter is arranged on one side of the two limiting blocks (4011) that are close to each other. The sample clearance hole (16) passes through the front end of the limiting block (4011) and is connected to the limiting hole (14).

9. A textile tensile strength testing device according to claim 6, characterized in that: The abutment assembly (203) comprises a damping rod (2031), a support plate (2032), a reset rod (2033) and a reset ring (2034); a core hole (17) penetrating the front end of the transmission rod (201) is provided inside the transmission rod (201); a countersunk hole (18) communicating with the core hole (17) is provided at the front end of the transmission rod (201); a side hole (19) communicating with the countersunk hole (18) is provided on the side wall of the transmission rod (201); the damping rod (2031) is plugged into the core hole (17); one end of the support plate (2032) is hinged to the front end of the damping rod (2031); and the other end of the support plate (2032) passes through the side hole (19); The hole wall of the matching hole (13) is provided with an annular groove (20) for inserting the support plate (2032), and the damping rod (2031) moves into the core hole (17) so that the angle between the support plate (2032) and the damping rod (2031) tends to 90° until the support plate (2032) extends out of the side hole (19) and is inserted into the annular groove (20); A strip hole (21) communicating with the core hole (17) is provided on the side wall of the transmission rod (201); one end of the reset rod (2033) is connected to the damping rod (2031); the reset rod (2033) is slidably plugged into the strip hole (21), and the reset rod (2033) protrudes from the side wall of the transmission rod (201); The reset ring (2034) is sleeved on the transmission rod (201), and the reset ring (2034) is fixedly connected to the stand (5). During the reset process of the transmission rod (201), the reset ring (2034) pushes the reset rod (2033) to disengage the support plate (2032) from the annular groove (20).

10. A textile tensile strength testing device according to claim 9, characterized in that: A piston hole (22) communicating with the core hole (17) is provided at one end of the transmission rod (201) close to the strip hole (21); a piston (23) is slidably arranged in the piston hole (22); the piston (23) is connected to the damping rod (2031) via a piston rod (8); and a one-way damping valve (3) communicating with the piston hole (22) is provided on the side wall of the transmission rod (201).

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