Polyester elastic knitted gray fabric stretching detection equipment

Abstract

The invention discloses polyester elastic knitted grey cloth stretching detection equipment, and belongs to the field of knitted grey cloth detection.The polyester elastic knitted grey cloth stretching detection equipment comprises a base and a fence fixedly connected to the upper end of the base, a lower clamping part is connected to the base, and a box body is clamped to the base; the base is further connected with a driving mechanism, the moving end of the driving mechanism is fixedly connected with a first cross beam, and the lower end of the first cross beam is connected with a hanging assembly. The hanging assembly comprises a second cross beam connected to the lower end of the first cross beam, a first movable groove formed in the second cross beam and a movable plate connected into the first movable groove in a sliding mode. Under the relatively controllable and repeatable conditions, the process that the fabric is completely soaked by liquid (such as sweat, rainwater and chemical reagents) in real use and the complex environment of the cloth in practical application are simulated, so that the mechanical property of the gray fabric after being acted by the liquid in the practical use is really simulated; and test data closer to a service environment can be obtained.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of knitted fabric detection, more particularly to a polyester elastic knitted fabric stretch detection device. BACKGROUND

[0002] The polyester elastic knitted fabric is a kind of raw fabric that is made of polyester as the main raw material, mixed with spandex or using processing technology to have excellent elasticity, and knitted by knitting method.

[0003] In order to ensure the quality of knitted products, it is necessary to detect the stretch of the knitted fabric produced; the prior art (Chinese invention patent with publication number CN118329633B) discloses a polyester elastic knitted fabric stretch detection device, which can realize the function of synchronous overall stretch detection of batch knitted fabric, and can improve the sufficiency of stretch detection and the efficiency of detection; although the existing stretch detection device can complete the basic stretch performance test of the fabric, its detection condition is too single, and it cannot simulate the complex environment in which the fabric is placed in actual application; especially when developing new products, environmental factors (such as temperature and humidity) and pollutants (such as sweat and chemicals) must be fully considered to affect the stretch performance of the fabric. SUMMARY

[0004] In view of the problems in the prior art, the purpose of the present application is to provide a polyester elastic knitted fabric stretch detection device.

[0005] To solve the above problems, the technical scheme adopted by the present application is as follows.

[0006] A polyester elastic knitted fabric stretch detection device, comprising a base and a surrounding barrier fixed on the upper end of the base, The base is connected with a lower clamping part, and the base is also connected with a box body; the base is also connected with a driving mechanism, and the moving end of the driving mechanism is fixed with a cross beam one, and the lower end of the cross beam one is connected with a hanging assembly; The hanging assembly comprises a cross beam two connected to the lower end of the cross beam one, a movable slot one opened in the cross beam two, a movable plate slidably connected in the movable slot one, a displacement assembly one connected in the cross beam two and driving the movable plate to move, a seat one connected to the lower end of the cross beam two, a movable seat connected in the seat one, an upper clamping part one fixed to the lower end of the movable seat, and an upper clamping part two connected to the lower end of the cross beam two. The lower end of the movable plate is also connected with a liquid rolling assembly, and the liquid rolling assembly comprises a frame body slidably connected to the lower end of the movable plate, two groups of liquid rolling parts movably connected to the inner wall of the frame body, and a displacement assembly two connected to the side of the movable plate and driving the frame body to move.

[0007] Further, the lower end of the cross beam is provided with a displacement groove for accommodating the second cross beam, the displacement assembly one comprises a screw rod one screwed in the inner part of the movable plate, and the two ends of the screw rod one are rotatably connected with the inner wall of the movable groove one, one side of the second cross beam is fixedly connected with a motor one, and the output shaft of the motor one penetrates through the second cross beam and is fixedly connected with one end of the screw rod one.

[0008] Further, the liquid rolling part comprises a compression roller and two sliding blocks rotatably connected with the two ends of the compression roller respectively, and the two sliding blocks are slidably connected with the inner wall of the frame body, the inner part of the frame body is further rotatably connected with a screw rod two, and the screw rod two is screwed in the two sliding blocks on the same side, the bottom of the frame body is fixedly connected with a motor three, and the output shaft of the motor three penetrates through the frame body and is fixedly connected with one end of the screw rod two.

[0009] Further, the displacement assembly two comprises a screw rod four rotatably connected with one side of the movable plate and a motor two fixedly connected with one side of the movable plate, and the output shaft of the motor two is fixedly connected with one end of the screw rod four, and the screw rod four is screwed in the inner part of the frame body.

[0010] Further, the lower end of the movable plate is symmetrically fixedly connected with two side plates, the two side plates are rotatably connected with the upper clamping part two, one side of one of the side plates is fixedly connected with a rotary driving part one, and the output shaft of the rotary driving part one is connected with the upper clamping part two.

[0011] Further, the inner part of the movable plate is further connected with a turnover assembly, the turnover assembly comprises a movable groove two provided in the lower end of the movable plate and a screw rod three rotatably connected with the inner wall of the movable groove two, one side of the movable plate is further fixedly connected with a motor four, the output shaft of the motor four is fixedly connected with one end of the screw rod three, the movable seat is slidably connected in the movable groove two, and the screw rod three is screwed in the inner part of the movable seat.

[0012] Further, the movable seat is rotatably connected in the inner part of the seat body one, the inner wall of the movable groove two is provided with a toothed key, the inner part of the seat body one is provided with a groove for avoiding the toothed key, and the inner part of the seat body one is rotatably connected with a gear one and a gear two engaged with the gear one, the gear one extends into the groove and is engaged with the toothed key, and the gear two is fixedly connected with one side of the movable seat.

[0013] Further, one side of the fence is rotatably connected with a side door, and the inner part of the side door is provided with an air outlet, the upper end of the base and one side of the side door are respectively fixedly connected with two vertical plates, and the inner parts of the two vertical plates are respectively fixedly connected with a fan one and a fan two, one side of one of the vertical plates is further fixedly connected with a lamp group, and the inner part of the fence is provided with an air inlet.

[0014] Further, the inner wall of the air inlet is fixedly connected with a filter screen.

[0015] Further, the lower clamping part lower end is fixedly connected with a rotating disc, and the rotating disc lower end is rotationally connected with the base upper end, the base interior is fixedly connected with a rotating part, and the rotating part rotating shaft is fixedly connected with the rotating disc lower end, the crossbeam one upper end is fixedly connected with a rotary drive part two, and the rotary drive part two output shaft penetrates the crossbeam one and is fixedly connected with the crossbeam two upper end.

[0016] Compared with the prior art, the beneficial effects of the present application are: (1) The present scheme sets up a vertical suspension assembly, two upper clamping parts can clamp the two ends of the gray cloth, so that the gray cloth forms a U-shaped natural vertical suspension, the driving mechanism drives the crossbeam to descend, so that the naturally suspended gray cloth enters the box body and is immersed in the sample liquid in the box body, ensuring that the gray cloth is uniformly contacted with the sample liquid, after the soaking is completed, part of the water in the gray cloth is squeezed out through the liquid squeezing assembly, and then stretching detection is carried out; Under relatively controllable and repeatable conditions, the process of the fabric being completely soaked in liquid (such as sweat, rainwater, chemical reagent) in real use and the complex environment of the cloth in actual application are simulated, so that the mechanical properties of the gray cloth after being affected by liquid in actual use are truly simulated, and test data closer to the real environment are obtained.

[0017] (2) The present scheme sets up a turning flat assembly, when the liquid squeezing assembly squeezes the gray cloth to remove water, the motor four can drive the seat body one to move in the movable groove two, the toothed key in the movable groove two can drive the two gears in the seat body one to rotate, so that the upper clamping part one rotates, and the driving part can drive the upper clamping part two to rotate, so that the upper clamping part one and the upper clamping part two change from a vertical state to a horizontal state, the vertically suspended U-shaped gray cloth can be flattened, the natural flat state of the gray cloth is maintained, and relatively small tension is provided, so that the gray cloth can enter the pressing point of the two compression rollers in a relatively flat state; After the U-shaped line is converted into a straight line, it is squeezed, which can reduce the formation of creases and ensure the integrity of the cloth structure.

[0018] (3) The present scheme sets up a fan one, a fan two and a lamp group, through the setting of the two fans, the gas in the enclosure can form convection, the gas flow in the enclosure is accelerated, the real use environment of the gray cloth always in air flow is simulated, the created convection environment makes the test conditions closer to reality, and the mechanical performance of the fabric under the ventilation condition can be detected; At the same time, the lamp group can simulate solar radiation to carry out light aging test, and through the irradiation of the lamp group, the attenuation law of the stretching performance of the gray cloth under continuous light can be tested. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the overall structure schematic diagram of the present application; Figure 2 It is the structure schematic diagram of the vertical plate, fan one, lamp group and lower clamping part of the present application; Figure 3 It is the structure schematic diagram of the rotating part and box body of the present application; Figure 4 Structure diagram of the hanging assembly, the liquid rolling assembly and the turning assembly of the present application; Figure 5 Structure diagram of the screw rod one and the motor one of the present application; Figure 6 Structure diagram of the tooth key of the present application; Figure 7 Structure diagram of the gear one, the gear two and the groove of the present application; Figure 8 Structure diagram of the gear one and the gear two of the present application; Figure 9 Structure diagram of the air inlet and the filter screen of the present application.

[0020] Explanation of the figure marks: 1, enclosure; 2, base; 21, rotating disc; 22, lower clamping part; 23, rotating part; 3, side door; 4, air outlet; 5, driving mechanism; 6, cross beam one; 61, avoiding slot; 7, box body; 8, hanging assembly; 81, cross beam two; 811, movable slot one; 812, screw rod one; 813, motor one; 82, movable plate; 83, seat body one; 831, groove; 84, movable seat; 85, upper clamping part one; 86, upper clamping part two; 87, side plate; 88, rotating driving part one; 9, liquid rolling assembly; 91, screw rod four; 92, motor two; 93, frame body; 94, sliding block; 95, screw rod two; 96, motor three; 97, compression roller; 10, turning assembly; 101, movable slot two; 102, motor four; 103, screw rod three; 104, tooth key; 105, gear one; 106, gear two; 11, rotating driving part two; 12, vertical plate; 13, fan one; 14, lamp group; 15, fan two; 16, filter screen; 17, air inlet. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments in the present application shall fall within the protection scope of the present application.

[0022] Please refer to Figures 1 to 9 A polyester elastic knitted fabric stretching detection device, comprising a base 2 and an enclosure 1 fixedly connected to the upper end of the base 2, A lower clamping part 22 is connected to the base 2, and a box body 7 is also clamped to the base 2; a driving mechanism 5 is also connected to the base 2, and a cross beam one 6 is fixedly connected to the moving end of the driving mechanism 5, and the lower end of the cross beam one 6 is connected with a hanging assembly 8; The hanging assembly 8 comprises a horizontal beam two 81 connected to the lower end of the horizontal beam one 6, a movable groove one 811 formed in the horizontal beam two 81, a movable plate 82 slidingly connected in the movable groove one 811, a displacement assembly one connected in the horizontal beam two 81 and driving the movable plate 82 to move horizontally, a seat one 83 connected to the lower end of the horizontal beam two 81, a movable seat 84 connected in the seat one 83, an upper clamping part one 85 fixed to the lower end of the movable seat 84, and an upper clamping part two 86 connected to the lower end of the horizontal beam two 81. The lower end of the movable plate 82 is also connected with a liquid rolling assembly 9, which comprises a frame 93 slidingly connected to the lower end of the movable plate 82, two groups of liquid rolling parts movably connected to the inner wall of the frame 93, and a displacement assembly two connected to the side of the movable plate 82 and driving the frame 93 to move.

[0023] The lower end of the horizontal beam one 6 is provided with an avoiding groove 61 accommodating the horizontal beam two 81, the displacement assembly one comprises a lead screw one 812 screw-connected in the movable plate 82, both ends of the lead screw one 812 are rotatably connected with the inner wall of the movable groove one 811, one side of the horizontal beam two 81 is fixedly connected with a motor one 813, and the output shaft of the motor one 813 penetrates through the horizontal beam two 81 and is fixedly connected with one end of the lead screw one 812.

[0024] The liquid rolling parts comprise a compression roller 97 and two sliding blocks 94 rotatably connected to both ends of the compression roller 97 respectively, both of the sliding blocks 94 are slidingly connected with the inner wall of the frame 93, the frame 93 is also rotatably connected with a lead screw two 95 inside, the lead screw two 95 is screw-connected in the two sliding blocks 94 on the same side, the frame 93 is fixedly connected with a motor three 96 at the bottom, and the output shaft of the motor three 96 penetrates through the frame 93 and is fixedly connected with one end of the lead screw two 95.

[0025] The displacement assembly two comprises a lead screw four 91 rotatably connected to one side of the movable plate 82 and a motor two 92 fixedly connected to one side of the movable plate 82, the output shaft of the motor two 92 is fixedly connected with one end of the lead screw four 91, and the lead screw four 91 is screw-connected in the frame 93.

[0026] By adopting the above technical scheme, one end of the cloth to be stretched for detection is clamped by the upper clamping part one 85, the other end of the cloth passes between the two compression rollers 97, and the other end of the cloth is clamped by the upper clamping part two 86. After the cloth is clamped, the middle part of the cloth will naturally hang down under the influence of gravity, realizing the effect of cloth hanging. Then the motor one 813 is controlled to work to drive the screw one 812 to rotate, and the screw one 812 rotating can make the movable plate 82 move in translation, so that the hanging cloth can move to the upper end of the box body 7. The driving mechanism 5 is controlled to work to drive the cross beam one 6 to descend, and the driving mechanism 5 is commonly a motor + screw, which drives the cross beam one 6 to move up and down, and drives the sample to be stretched. When the cross beam one 6 descends above the box body 7, the hanging cloth will enter the box body 7 and soak in the detection sample liquid in the box body 7. The detection sample liquid can be selected from sweat, rainwater, chemical reagents and the like. After the cloth is soaked in the box body 7, the driving mechanism 5 drives the cross beam one 6 to ascend, and then the motor three 96 is controlled to work, which drives the screw two 95 to rotate. The screw two 95 rotating makes the two sliders 94 on the same side move towards each other, and the two sliders 94 moving drives the two compression rollers 97 to move towards each other, so that the distance between the two compression rollers 97 becomes smaller, and the cloth is extruded by the two compression rollers 97. At the same time, the motor two 92 is controlled to work to drive the screw four 91 to rotate, which drives the frame body 93 to move in translation at the lower end of the movable plate 82. The frame body 93 moving in translation drives the two compression rollers 97 to move in translation, extruding the part of the cloth soaked in the liquid, extruding part of the water in the cloth, and reducing the liquid content of the cloth. After extrusion, the two compression rollers 97 are controlled to reset, the movable plate 82 is controlled to move and reset to above the lower clamping part two 22, then the upper clamping part two 86 is controlled to cancel the clamping of one end of the cloth, and the lower clamping part two 22 is controlled to clamp one end of the cloth. The driving mechanism 5 drives the cross beam one 6 to ascend, and the upper clamping part one 85 drives the cloth to be stretched, and the tensile strength is detected by the force sensor in the upper clamping part one 85, so as to realize the detection of the tensile property of the soaked cloth. It should be noted that the current tensile detection equipment is mostly integrated with an upper clamp and a force sensor, and the tension is accurately and timely collected during the process that the upper clamp drives the workpiece to be stretched. The principle of the tensile detection of the fabric also belongs to the mature prior art, which will not be described here. In this way, under relatively controllable and repeatable conditions, the process that the fabric is completely soaked in liquid (such as sweat, rainwater, chemical reagents) in real use and the complex environment of the cloth in actual application are simulated, so as to truly simulate the mechanical property of the cloth after being affected by liquid in actual use, and test data closer to the real environment are obtained.

[0027] As Figure 4 , Figures 6-8As shown, the lower end of the movable plate 82 is symmetrically fixed with two side plates 87, and the upper clamping part two 86 is rotatably connected between the two side plates 87. One side of one of the side plates 87 is fixed with a rotary driving part one 88, and the output shaft of the rotary driving part one 88 is connected with the upper clamping part two 86.

[0028] The movable plate 82 is further connected with a turning flat assembly 10, which comprises a movable groove two 101 opened at the lower end of the movable plate 82 and a screw rod three 103 rotatably connected with the inner wall of the movable groove two 101. The movable plate 82 is further fixed with a motor four 102 on one side, and the output shaft of the motor four 102 is fixed with one end of the screw rod three 103. The seat one 83 is slidably connected in the movable groove two 101, and the screw rod three 103 is screwed in the seat one 83.

[0029] The movable seat 84 is rotatably connected in the seat one 83. The inner wall of the movable groove two 101 is provided with a toothed key 104. The seat one 83 is provided with a groove 831 avoiding the toothed key 104 in the inner part. The inner part of the seat one 83 is rotatably connected with a gear one 105 and a gear two 106 engaged with the gear one 105. The gear one 105 extends into the groove 831 and is engaged with the toothed key 104. The gear two 106 is fixed with one side of the movable seat 84.

[0030] Through the above technical scheme, when the suspension part of the gray cloth is soaked in the box body 7, the driving mechanism 5 drives the upper beam one 6 to rise. Before the squeezing assembly 9 squeezes the gray cloth, the motor four 102 is controlled to work to drive the screw rod three 103 to rotate. The rotation of the screw rod three 103 can drive the seat one 83 to move in the movable groove two 101. When the seat one 83 moves, the toothed key 104 can drive the gear one 105 and the gear two 106 to rotate. The rotation of the gear two 106 can drive the movable seat 84 to rotate. The rotation of the movable seat 84 drives the upper clamping part one 85 to rotate, so that the upper clamping part one 85 realizes rotation in the process of translation. At the same time, the rotary driving part one 88 can drive the upper clamping part two 86 to rotate, so that the upper clamping part one 85 and the upper clamping part two 86 change from the vertical state to the horizontal state. When the two upper clamping parts change to the horizontal state, the naturally suspended gray cloth can be converted from the U-shaped line to the straight line, so that the suspended U-shaped gray cloth is flattened. The gray cloth can be in a relatively flat state to enter the pressing point of the two compression rollers 97 and then be squeezed, so that the formation of creases is reduced, and the structure of the cloth is ensured to be complete.

[0031] As shown in FIG. 8, the upper clamping part one 85 is in the horizontal state, and the upper clamping part two 86 is in the vertical state. Figure 1 , Figure 2 , Figure 9As shown, the side door 3 is rotatably connected to one side of the enclosure 1, and the side door 3 is internally provided with an air outlet 4, the upper end of the base 2 and one side of the side door 3 are respectively fixedly connected with two vertical plates 12, and the two vertical plates 12 are respectively fixedly connected with a fan one 13 and a fan two 15, and one side of the vertical plate 12 is further fixedly connected with a lamp group 14, and the enclosure 1 is internally provided with an air inlet 17.

[0032] The inner wall of the air inlet 17 is fixedly connected with a filter screen 16.

[0033] By adopting the above technical scheme, before or during the tensile test of the gray cloth, the fan one 13 can draw external air from the air inlet 17 into the enclosure 1, and the fan two 15 can exhaust the air in the enclosure 1 from the air outlet 4, so that the gas in the enclosure 1 forms a convection, accelerates the gas flow in the enclosure 1, simulates the real use environment of the gray cloth in the air flow, creates a convection environment, and makes the test condition more close to the reality, and can detect the mechanical performance of the fabric under the ventilation condition; meanwhile, the lamp group 14 can adopt a xenon lamp, which can better simulate the full sunlight spectrum and simulate solar radiation for light aging test, and the attenuation law of the tensile property of the gray cloth under continuous illumination can be tested by irradiation of the lamp group 14.

[0034] As shown in Figure 2 and Figure 3 The lower end of the lower clamping part 22 is fixedly connected with a rotating disc 21, and the lower end of the rotating disc 21 is rotatably connected with the upper end of the base 2, the inner part of the base 2 is fixedly connected with a rotating part 23, and the rotating shaft of the rotating part 23 is fixedly connected with the lower end of the rotating disc 21, the upper end of the cross beam one 6 is fixedly connected with a rotary driving part two 11, and the output shaft of the rotary driving part two 11 penetrates the cross beam one 6 and is fixedly connected with the upper end of the cross beam two 81.

[0035] By adopting the above technical scheme, before the tensile test, the rotary driving part two 11 can be controlled to work, drive the cross beam two 81 to rotate, the cross beam two 81 can drive the upper clamping part one 85 to rotate, and at the same time, the rotating part 23 can work to drive the lower clamping part 22 to rotate, the synchronous rotation of the upper clamping part one 85 and the lower clamping part 22 can drive the gray cloth to rotate, and the rotation of the gray cloth can make the gray cloth be irradiated by the lamp group 14 more uniformly, and simulate a more uniform illumination effect.

[0036] The use method is as follows: the one end of the cloth to be stretched is clamped by the upper clamping part one 85, the other end of the cloth passes between the two compression rollers 97, the other end of the cloth is clamped by the upper clamping part two 86, after the cloth is clamped, the middle of the cloth will naturally hang down under the influence of gravity, the effect of cloth hanging is realized; the hanging cloth can be moved to the upper end of the box body 7, the control driving mechanism 5 is controlled to work to drive the beam one 6 to descend, the hanging cloth will enter the inside of the box body 7 and soak in the detection sample liquid in the inside of the box body 7, after the cloth is soaked in the box body 7, the driving mechanism 5 drives the beam one 6 to ascend, the control flat assembly 10 is controlled to work to make the upper clamping part one 85 and the upper clamping part two 86 change from the vertical state to the horizontal state, the naturally hanging cloth is converted from the U-shaped line to the straight line, then the water in the cloth is squeezed out by the rolling assembly 9, so that the liquid content of the cloth is reduced; after the squeezing is completed, the two compression rollers 97 are controlled to reset, the movable plate 82 is controlled to move and reset to the upper side of the lower clamping part 22, then the upper clamping part two 86 is controlled to cancel the clamping of the one end of the cloth, the one end of the cloth is clamped by the lower clamping part 22, the driving mechanism 5 drives the beam one 6 to ascend, the cloth is pulled by the upper clamping part one 85, the tensile strength is detected by the force sensor in the upper clamping part one 85.

[0037] The above merely illustrates the preferred embodiments of the present application; the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A polyester stretch knitted fabric stretch testing device, comprising a base (2) and a baffle (1) fixed to the upper end of the base (2), characterized in that: The base (2) is connected to a lower clamping portion (22), and a box body (7) is also clamped on the base (2); the base (2) is also connected to a driving mechanism (5), and the moving end of the driving mechanism (5) is fixedly connected to a crossbeam (6), and the lower end of the crossbeam (6) is connected to a hanging component (8); The hanging assembly (8) includes a second crossbeam (81) connected to the lower end of the first crossbeam (6), a movable groove (811) provided inside the second crossbeam (81), a movable plate (82) slidably connected in the movable groove (811), a shift assembly (1) connected to the second crossbeam (81) and driving the movable plate (82) to move in translation, a seat (83) connected to the lower end of the second crossbeam (81), a movable seat (84) connected inside the seat (83), an upper clamping portion (85) fixed to the lower end of the movable seat (84), and an upper clamping portion (86) connected to the lower end of the second crossbeam (81); The lower end of the movable plate (82) is also connected to a liquid squeezing assembly (9), and the liquid squeezing assembly (9) includes a frame (93) slidably connected to the lower end of the movable plate (82), two groups of liquid squeezing parts movably connected to the inner wall of the frame (93), and a second shifting assembly connected to the side of the movable plate (82) and driving the frame (93) to move.

2. The polyester stretch knitted fabric stretch testing device according to claim 1, characterized in that: The lower end of the crossbeam 1 (6) is provided with a avoidance groove (61) for accommodating the crossbeam 2 (81), and the shifting component 1 includes a screw rod 1 (812) screwed inside the movable plate (82), and both ends of the screw rod 1 (812) are rotatably connected to the inner wall of the movable groove 1 (811), and a motor 1 (813) is fixedly connected to one side of the crossbeam 2 (81), and the output shaft of the motor 1 (813) passes through the crossbeam 2 (81) and is fixedly connected to one end of the screw rod 1 (812).

3. The polyester stretch knitted fabric stretch testing device according to claim 2, characterized in that: The liquid squeezing section includes a pressure roller (97) and two sliders (94) rotatably connected to the two ends of the pressure roller (97), and the two sliders (94) are both slidably connected to the inner wall of the frame (93). The frame (93) is also rotatably connected to a second screw rod (95), and the second screw rod (95) is screwed into the two sliders (94) on the same side. The bottom of the frame (93) is fixedly connected to a third motor (96), and the output shaft of the third motor (96) passes through the frame (93) and is fixedly connected to one end of the second screw rod (95).

4. The polyester stretch knitted fabric stretch testing device according to claim 3, characterized in that: The shift assembly 2 includes a screw rod 4 (91) rotatably connected to one side of the movable plate (82) and a motor 2 (92) fixedly connected to one side of the movable plate (82), and the output shaft of the motor 2 (92) is fixedly connected to one end of the screw rod 4 (91), and the screw rod 4 (91) is screwed into the interior of the frame (93).

5. The polyester stretch knitted fabric stretch testing device according to claim 4, characterized in that: The lower end of the movable plate (82) is symmetrically fixed with two side plates (87), and the upper clamping part 2 (86) is rotatably connected between the two side plates (87), and a rotating driving part 1 (88) is fixed on one side of one of the side plates (87), and the output shaft of the rotating driving part 1 (88) is connected to the upper clamping part 2 (86).

6. The polyester stretch knitted fabric tensile testing device according to claim 5, characterized in that: The movable plate (82) is also connected to a flattening assembly (10) inside, and the flattening assembly (10) includes a movable groove 2 (101) opened at the lower end of the movable plate (82) and a screw rod 3 (103) rotatably connected to the inner wall of the movable groove 2 (101). One side of the movable plate (82) is also fixedly connected to a motor 4 (102), and the output shaft of the motor 4 (102) is fixedly connected to one end of the screw rod 3 (103). The seat body 1 (83) is slidably connected in the movable groove 2 (101), and the screw rod 3 (103) is screwed inside the seat body 1 (83).

7. The polyester stretch knitted fabric stretch testing device according to claim 6, characterized in that: The movable seat (84) is rotatably connected to the interior of the seat body 1 (83), a tooth key (104) is provided on the inner wall of the movable groove 2 (101), a groove (831) for avoiding the tooth key (104) is provided inside the seat body 1 (83), and the interior of the seat body 1 (83) is rotatably connected to a gear 1 (105) and a gear 2 (106) meshing with the gear 1 (105), the gear 1 (105) extends into the groove (831) and meshes with the tooth key (104), and the gear 2 (106) is fixed to one side of the movable seat (84).

8. The polyester stretch knitted fabric stretch testing device according to claim 7, characterized in that: One side of the enclosure (1) is rotatably connected to a side door (3), and an air outlet (4) is provided inside the side door (3). Two vertical plates (12) are fixedly connected to the upper end of the base (2) and one side of the side door (3), and a fan 1 (13) and a fan 2 (15) are fixedly connected inside the two vertical plates (12). A light group (14) is also fixedly connected to one side of one of the vertical plates (12). An air inlet (17) is provided inside the enclosure (1).

9. The polyester stretch knitted fabric stretch testing device according to claim 8, characterized in that: A filter screen (16) is fixedly connected to the inner wall of the air inlet (17).

10. The polyester stretch knitted fabric stretch testing device according to claim 9, characterized in that: The lower end of the lower clamping portion (22) is fixedly connected to a turntable (21), and the lower end of the turntable (21) is rotatably connected to the upper end of the base (2). A rotating portion (23) is fixedly connected inside the base (2), and the rotating shaft of the rotating portion (23) is fixedly connected to the lower end of the turntable (21). The upper end of the beam 1 (6) is fixedly connected to the rotating drive portion 2 (11), and the output shaft of the rotating drive portion 2 (11) passes through the beam 1 (6) and is fixedly connected to the upper end of the beam 2 (81).

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