A knitting process finished product hanging durability testing device and method

Abstract

The present invention provides a knitting finished product hanging durability test device and method, comprising a mounting frame, the lower end of which is slidably connected to a driving plate, the lower end of which is equipped with a plurality of clamping devices for fixing the knitting finished product, the clamping device comprising a mounting plate fixed to the lower end of the driving plate, two groups of mounting components are sequentially arranged below the mounting plate, the mounting components comprising a locking rod, the locking rod is provided with two locking blocks, the side walls of the locking blocks are fixed with locking clips, the two mounting components are connected by a self-locking telescopic rod, the side walls of the self-locking telescopic rod base are provided with a self-locking component, the first mounting component is fixedly connected to the mounting plate, and the lower end of the second mounting component is fixedly connected to a counterweight. The invention solves the problem of how to simply and dynamically detect knitting finished products.

Description

Technical Field

[0001] The invention relates to the technical field of knitted product testing, and in particular to a knitted product hanging durability testing device and method. Background Art

[0002] Textiles that have been processed and woven are widely used. Clothes and bedding in daily life are all finished products of knitting technology. Different knitting technology products have different application occasions and different requirements for product quality and characteristics. Knitting technology products used in disaster relief, processing and production and other fields have certain requirements for product durability. Knitting technology products will be subjected to durability tests before leaving the factory to inspect product quality.

[0003] Patent publication number: CN110823676A, discloses a knitted finished product hanging durability test device and method, which measures the mass of the soft furnishing product on an electronic scale, hangs the soft furnishing product sample horizontally on the left and right hook columns on the steel deformer test plate, hangs a hanging hook at one end of a tensile gauge on the small hole at the bottom of the middle part, measures the force value on the tensile gauge of the soft furnishing product sample at regular intervals, records and makes a tension time curve, and then tests the durability of the knitted finished product.

[0004] The above test scheme can only test the durability of knitted products under static conditions. The testing method is traditional. The knitted products are changeable during actual use. It is difficult to meet the testing needs by adopting a static test scheme. In addition, it is necessary to operate it many times during the testing process. The operation process is complicated and the testing cycle is long. Summary of the invention

[0005] In view of the above problems, the present invention provides a knitting process finished product hanging durability testing device and method, which solves the problem of how to simply and dynamically detect the knitting process finished product.

[0006] To solve the above problems, the technical solution adopted by the present invention is:

[0007] A knitting process finished product hanging durability testing device, comprising a mounting frame, the lower end of the mounting frame is slidably connected to a driving plate, the lower end of the driving plate is equipped with a plurality of clamping devices for fixing the knitting process finished product, the clamping device comprises a mounting plate fixed to the lower end of the driving plate, two groups of mounting components are arranged in sequence below the mounting plate, the mounting components comprise a locking rod, the locking rod is provided with two locking blocks, the side walls of the locking blocks are fixed with locking clips, the two mounting components are connected by a self-locking telescopic rod, the side walls of the base of the self-locking telescopic rod are provided with a self-locking component, the first mounting The components are fixedly connected to the mounting plate, a counterweight is fixedly connected to the lower end of the second mounting component, a weight-increasing device is provided at the upper end of the mounting frame, wherein the weight-increasing device can increase the weight of the counterweight during the movement of the clamping device; a driving mechanism is provided at the upper end of the mounting frame, wherein the driving mechanism can control the automatic reciprocating movement of the clamping device; two mounting blocks are provided at the lower end of the mounting plate, two leveling rollers are rotatably connected between the two mounting blocks, and a leveling mechanism is provided at the lower end of the mounting plate, wherein the leveling mechanism controls the leveling roller to move within a predetermined track and completes the clamping of the knitting process finished product.

[0008] Preferably, the middle part of the locking clamp is concave, and the concave part of the locking clamp is provided with a locking plate, and the locking plate and the locking clamp slide relatively with each other, and the side wall of the locking plate is rotatably connected with a locking bolt, and the locking bolt passes through the locking clamp and is threadedly connected thereto.

[0009] Preferably, the locking block is slidably connected to the locking rod, and an adjustment gasket slidably connected to the locking rod is provided on one side of the locking block. The adjustment gasket and the locking block are elastically connected by an elastic member, and the side wall of the adjustment gasket is rotatably connected to an adjusting nut, and the adjusting nut is sleeved on the outside of the locking rod and threadedly connected thereto.

[0010] Preferably, the leveling mechanism comprises two limiting telescopic rods fixed to the lower end of the mounting plate, the limiting telescopic rods having telescopic ends, and the telescopic ends of the limiting telescopic rods are fixedly connected to the corresponding mounting blocks.

[0011] Preferably, a piston is sealingly and slidably connected inside the base of the limited telescopic rod, the telescopic end is fixed to the side wall of the piston, the piston and the base of the limited telescopic rod form a booster chamber, the booster chamber is connected to two air ducts, a first one-way valve is provided in the air duct, a booster airbag is fixedly connected to the side wall of the adjusting gasket, and the end of the first air duct is connected to the booster airbag.

[0012] Preferably, the weight-increasing device includes a weight-increasing airbag fixedly arranged on the upper end of the mounting plate and a storage box. The weight-increasing airbag is an elastic airbag and is connected with two liquid guide tubes. A second one-way valve is provided in the liquid guide tube. A counterweight chamber is provided in the counterweight component. The first liquid guide tube is connected with the counterweight chamber, and the second liquid guide tube is connected with the storage box. A mounting protrusion is fixedly connected to the upper end of the mounting frame. The side wall of the mounting protrusion is provided with a back plate cooperating with the weight-increasing airbag. A positioning control component for adjusting the position of the back plate is provided on the mounting protrusion.

[0013] Preferably, the position control component comprises a position control bolt rotatably connected to the side wall of the abutment plate, and the position control bolt passes through the mounting protrusion and is threadedly connected thereto.

[0014] Preferably, the driving mechanism includes a reciprocating screw rotatably connected to the mounting frame, the reciprocating screw outer shell is provided with a screw sleeve slidably connected to the mounting frame, the mounting plate is installed at the lower end of the screw sleeve, the side of the mounting frame is fixedly connected to a motor, and the end of the motor output shaft is fixedly connected to the screw sleeve.

[0015] The present invention also provides a method for testing the hanging durability of a knitted finished product, comprising the following specific steps:

[0016] S1, rotating a plurality of the adjusting nuts to adjust the distance between two corresponding locking blocks so as to match the knitting product;

[0017] S2, placing the two sides of the upper end of the knitted product on the corresponding positions of the two locking clamps of the first mounting component, and rotating the locking bolt to adjust the position of the adjusting gasket to complete the clamping and fixing of the upper end of the knitted product;

[0018] S3, adjusting the length of the self-locking telescopic rod according to the length of the finished knitting product, so that the second installation component corresponds to the lower end position of the finished knitting product, and rotating the self-locking component to complete the locking of the position of the installation component;

[0019] S4, passing the knitted product through the two flattening rollers, placing the lower end of the knitted product in the locking clamp of the second mounting component, and moving the two flattening rollers downward to complete the pretreatment and clamping of the knitted product;

[0020] S5, rotating the self-locking component so that the self-locking telescopic rod is in a freely telescopic state, starting the motor, and controlling the clamping device and the knitting product to move back and forth synchronously;

[0021] S6, adjusting the position of the abutment plate, and, after the knitting product moves for a predetermined time, recording the status of the knitting product, thereby completing the detection process.

[0022] The beneficial effects of the present invention are:

[0023] 1. By setting up the mounting frame, driving mechanism, clamping device, counterweight and other mechanisms, the clamped and fixed knitting process product can be controlled to move cyclically, and during the movement, the mass of the counterweight can be gradually increased according to the detection requirements, and the state of the knitting process product can be automatically changed. The knitting process product can be subjected to dynamic durability test, making the test results more in line with reality and simplifying the test process.

[0024] 2. By setting up limit telescopic rods, mounting blocks, leveling rollers and other mechanisms, the surface of the knitted product to be tested can be leveled, making the wrinkles on the surface smoother, and the lower end of the knitted product can be automatically clamped after leveling, which simplifies the steps of clamping the knitted product and improves the efficiency of the test.

[0025] 3. By setting components such as locking clamps, locking bolts, adjusting nuts, and adjusting gaskets, the knitting process finished product can be quickly clamped and limited, and the position of the locking clamp can be adjusted by rotating the adjusting nut, so that different knitting process finished products can be adapted and clamped. Under the action of the adjusting gasket, the knitting process finished product can be in a relatively open state, so that the surface of the knitting process finished product is tensioned, which is convenient for subsequent inspection of the knitting process finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 It is a front view structural schematic diagram of the present invention;

[0028] Figure 3 It is a schematic diagram of the top view structure of the present invention;

[0029] Figure 4 It is a side view structural schematic diagram of the present invention;

[0030] Figure 5 It is a schematic diagram of the enlarged structure of point A of the present invention;

[0031] Figure 6 It is a schematic diagram of the enlarged structure of point B of the present invention.

[0032] In the figure: 1. mounting frame; 2. driving mechanism; 201. reciprocating screw; 202. screw sleeve; 203. motor; 3. clamping device; 301. mounting component; 3011. locking rod; 3012. adjusting nut; 3013. adjusting gasket; 3014. elastic member; 3015. locking clamp; 3016. locking bolt; 3017. locking block; 302. self-locking telescopic rod; 3021. self-locking component; 303. mounting plate; 4. counterweight; 5. weight-increasing device; 501. storage box; 502. weight-increasing airbag; 503. abutment plate; 6. position control component; 601. position control bolt; 7. leveling mechanism; 701. position-limiting telescopic rod; 7011. piston; 7012. pressurizing chamber; 7013. telescopic end; 702. mounting block; 703. leveling roller. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0034] Reference Figure 1-6 , a knitting process finished product hanging durability test device, comprising a mounting frame 1, the lower end of the mounting frame 1 is slidably connected with a driving plate, and the lower end of the driving plate is equipped with a plurality of clamping devices 3 for fixing the knitting process finished product, the clamping device 3 is used to clamp and limit the knitting process finished product, so that the upper end of the knitting process finished product is in a rated position, and during the test process, the upper end of the knitting process finished product is relatively fixed, and a force is applied to the lower end of the knitting process finished product to complete the test, the clamping device 3 comprises a mounting plate 303 fixed to the lower end of the driving plate, and two groups of mounting components 301 are arranged in sequence below the mounting plate 303, the mounting component 301 comprises a locking rod 3011, and two locking blocks 3017 are arranged on the locking rod 3011, and a locking clip 3015 is fixed to the side wall of the locking block 3017, and the knitting process finished product is clamped and fixed by the locking clip 3015, and the upper and lower two locking clips 3015 complete the limit fixation of the four corners of the knitting process finished product.

[0035] The two mounting components 301 are connected by a self-locking telescopic rod 302, and a self-locking component 3021 is provided on the side wall of the base of the self-locking telescopic rod 302. The first mounting component 301 is fixedly connected to the mounting plate 303, and the lower end of the second mounting component 301 is fixedly connected to a counterweight 4, and the upper end of the mounting frame 1 is provided with a weight-increasing device 5, wherein the weight-increasing device 5 can increase the weight of the counterweight 4 during the movement of the clamping device 3. The first mounting component 301 is located above the second mounting component 301, and the upper mounting component 301 is fixedly connected to the mounting plate 303. The upper mounting component 301 is connected to the lower mounting component 301 by a self-locking telescopic rod 302, and the lower mounting component 301 can move freely up and down, and the distance between the two mounting components 301 can be adjusted according to the length of the finished product of the knitting process.

[0036] A driving mechanism 2 is provided at the upper end of the mounting frame 1, wherein the driving mechanism 2 can control the clamping device 3 to automatically reciprocate. The driving mechanism 2 controls the clamping device 3 to drive the knitting process product to reciprocate. The knitting process product will be subjected to dynamic force changes during the reciprocating movement, thereby simulating dynamic detection of the knitting process product.

[0037] Two mounting blocks 702 are provided at the lower end of the mounting plate 303, and two leveling rollers 703 are rotatably connected between the two mounting blocks 702. A leveling mechanism 7 is provided at the lower end of the mounting plate 303, wherein the leveling mechanism 7 controls the leveling roller 703 to move within a predetermined track and completes the clamping of the knitting process product. The leveling mechanism 7 can make the surface of the knitting process product relatively flat, and the leveling process is completed by sliding the two leveling rollers 703 downward. After leveling, the lower end of the knitting process product is clamped to complete the preparation work for inspection.

[0038] The middle part of the locking clamp 3015 is concave, and a locking plate is provided on the concave part of the locking clamp 3015. The locking plate and the locking clamp 3015 slide relative to each other. The side wall of the locking plate is rotatably connected with a locking bolt 3016. The locking bolt 3016 passes through the locking clamp 3015 and is threadedly connected thereto. The position of the locking plate can be adjusted by rotating the locking bolt 3016. By adjusting the position of the locking plate, the knitting product can be squeezed and clamped to complete the limiting work.

[0039] The locking block 3017 is slidably connected to the locking rod 3011, and an adjusting gasket 3013 slidably connected to the locking rod 3011 is provided on one side of the locking block 3017. The adjusting gasket 3013 and the locking block 3017 are elastically connected by an elastic member 3014. The side wall of the adjusting gasket 3013 is rotatably connected with an adjusting nut 3012. The adjusting nut 3012 is sleeved on the outside of the locking rod 3011 and threadedly connected thereto. The position of the locking block 3017 can be adjusted by rotating the adjusting nut 3012, and the locking block 3017 and the adjusting gasket 3013 are elastically connected, so that the gap between the two corresponding locking blocks 3017 can be slightly larger than the width of the knitting process product. After clamping, the knitting process product can be automatically opened to ensure the flatness of the surface of the knitting process product.

[0040] The leveling mechanism 7 includes two limiting telescopic rods 701 fixed at the lower end of the mounting plate 303. The limiting telescopic rods 701 have telescopic ends 7013. The telescopic ends 7013 of the limiting telescopic rods 701 are fixedly connected to the corresponding mounting blocks 702. The leveling roller 703 can be moved to a rated position through the limiting telescopic rods 701 and other components to complete the leveling of the knitting product.

[0041] A piston 7011 is sealed and slidably connected inside the base of the limiting telescopic rod 701, and the telescopic end 7013 is fixed to the side wall of the piston 7011. The piston 7011 and the base of the limiting telescopic rod 701 form a boosting chamber 7012. The boosting chamber 7012 is connected to two air ducts, and a first one-way valve is provided in the air duct. A boosting airbag is fixedly connected to the side wall of the adjusting gasket 3013, and the end of the first air duct is connected to the boosting airbag. In the process of moving the leveling roller 703 downward, the space size of the boosting chamber 7012 can be reduced. At this time, the gas in the boosting chamber 7012 enters the boosting airbag, and the knitting process finished product is clamped by the boosting airbag. The lower end of the knitting process finished product is clamped, and the upper end of the knitting process finished product is further clamped.

[0042] The weight-increasing device 5 includes a weight-increasing airbag 502 fixedly arranged on the upper end of the mounting plate 303 and a storage box 501. The weight-increasing airbag 502 is an elastic airbag and is connected to two liquid guide tubes. A second one-way valve is arranged in the liquid guide tube. A weight-increasing chamber is arranged in the counterweight 4. The first liquid guide tube is connected to the counterweight chamber, and the second liquid guide tube is connected to the storage box 501. The storage box 501 is filled with liquid. During the contraction of the weight-increasing airbag 502, the liquid in the storage box 501 is directionally pumped into the counterweight 4 to increase the weight of the counterweight 4. A mounting protrusion is fixedly connected to the upper end of the mounting frame 1. A butt plate 503 cooperating with the weight-increasing airbag 502 is arranged on the side wall of the mounting protrusion. A position control component 6 for adjusting the position of the butt plate 503 is arranged on the mounting protrusion. The position of the butt plate 503 is controlled by the position control component 6, so that the size of each contraction of the weight-increasing airbag 502 can be controlled, and various detections can be realized.

[0043] The position control component 6 includes a position control bolt 601 rotatably connected to the side wall of the abutment plate 503 . The position control bolt 601 penetrates the mounting protrusion and is threadedly connected thereto. The position of the abutment plate 503 can be controlled by rotating the position control bolt 601 .

[0044] The driving mechanism 2 includes a reciprocating screw 201 rotatably connected to the mounting frame 1, the outer shell of the reciprocating screw 201 is provided with a screw sleeve 202 slidably connected to the mounting frame 1, the mounting plate 303 is installed at the lower end of the screw sleeve 202, the side of the mounting frame 1 is fixedly connected to the motor 203, the end of the output shaft of the motor 203 is fixedly connected to the screw sleeve 202, when the motor 203 is started, the screw sleeve 202 is controlled to rotate, and when the reciprocating screw 201 is rotated, the screw sleeve 202 is controlled to reciprocate, so as to complete the driving of the clamping device 3 and the knitting process product, and a variety of connection methods can be adopted between the mounting plate 303 and the screw sleeve 202, so that the clamping device 3 can swing a certain angle during the return movement, and dynamic simulation can be performed.

[0045] It should be noted here that the inspection process of the knitting process product can be carried out in the most intuitive way: that is, to determine whether the knitting process product is broken or deformed beyond a threshold value. Similarly, the existing detection equipment can be installed on the clamping device 3 to determine the change in the distance between the two mounting components 301, which can make the durability inspection of the knitting process product more accurate.

[0046] The present invention also provides a method for testing the hanging durability of a knitted finished product, comprising the following specific steps:

[0047] S1, rotate multiple adjusting nuts 3012 to adjust the distance between two corresponding locking blocks 3017 so that it matches the knitting product. The distance between the two corresponding adjusting nuts 3012 is adjusted according to the width of the knitting product, so that the distance between the two corresponding adjusting nuts 3012 is slightly larger than the width of the knitting product. Since the locking block 3017 and the adjusting gasket 3013 are elastically connected by the elastic member 3014, the clamped knitting product is spread flat under the action of the elastic force.

[0048] S2, place the two sides of the upper end of the knitted product at the corresponding positions of the two locking clamps 3015 of the first mounting component 301 respectively, and rotate the locking bolt 3016 to adjust the position of the adjusting gasket 3013 to complete the clamping and fixation of the upper end of the knitted product, place the two top corners of the upper end of the knitted product in the concave parts of the two locking clamps 3015 at the upper end, and rotate the locking bolt 3016 to adjust the position of the adjusting gasket 3013 to complete the clamping of the upper end of the knitted product.

[0049] S3, adjust the length of the self-locking telescopic rod 302 according to the length of the knitting process product, so that the second installation component 301 corresponds to the lower end position of the knitting process product, and rotate the self-locking component 3021 to complete the locking of the position of the installation component 301. By rotating the self-locking component 3021, the self-locking telescopic rod 302 is controlled to be in different states, such as a locked state or a free sliding state. After adjusting the position of the installation component 301, the self-locking component 3021 is rotated to put the self-locking telescopic rod 302 in a locked state, which is convenient for the subsequent fixation of the lower end of the knitting process product.

[0050] S4, pass the knitting product through two leveling rollers 703, and place the lower end of the knitting product in the locking clamp 3015 of the second mounting component 301, move the two leveling rollers 703 downward to complete the pretreatment and clamping of the knitting product, in the process of moving the two leveling rollers 703 downward, the leveling rollers 703 on both sides can squeeze and flatten the knitting product in the middle to avoid excessive wrinkles in the middle part of the knitting product, and avoid force concentration on the wrinkles of the knitting product during subsequent testing of the knitting product, so that the detection result is more accurate, and in the process of moving the leveling roller 703 downward, the piston 7011 can be driven to move downward through the telescopic end 7013, and the space of the boost chamber 7012 is continuously reduced during this process. At this time, the boost airbag at the upper end completes further squeezing and clamping of the knitting product, and the boost airbag at the lower end inflates to complete automatic clamping of the lower end of the knitting product.

[0051] It should be noted here that the position of the locking plate in the locking clamp 3015 at the lower end corresponds to the lower end of the knitting process product but is not tightly pressed. The lower end of the knitting process product still has a certain amount of room for movement. When the leveling roller 703 moves downward to the lowest point, the knitting process product is leveled and the lower end of the knitting process product is automatically clamped.

[0052] S5, rotate the self-locking component 3021 to make the self-locking telescopic rod 302 in a freely retractable state, start the motor 203, control the clamping device 3 and the knitting process product to move back and forth synchronously, during the reciprocating movement of the clamping device 3 and the knitting process product, the force exerted on the knitting process product is constantly changing, and the weight of the counterweight 4 will continue to increase according to the pre-set conditions, completing the durability test of the knitting process product, gradually increasing the weight of the counterweight 4, and gradually increasing the pulling force of the counterweight 4 on the knitting process product. The knitting process product that does not meet the quality standards will undergo a large deformation or even break, and it can be intuitively judged whether the knitting process product is qualified.

[0053] S6, adjust the position of the abutment plate 503, and, after the knitting process finished product moves for a predetermined time, record the status of the knitting process finished product, complete the detection process, adjust the abutment plate 503 to different positions, and be able to cooperate with the weight-added airbag 502 to control the size of the compressed volume of the weight-added airbag 502. By controlling the size of the contraction of the weight-added airbag 502 during each movement process, the size of the weight increase of the counterweight 4 is controlled to achieve durability testing of different knitting process finished products.

[0054] Replace different knitting process finished products, repeat the above operation, and complete the durability test of different knitting process finished products.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A knitting finished product hanging durability test device, comprising a mounting frame (1), a driving plate being slidably connected to the lower end of the mounting frame (1), a plurality of clamping devices (3) for fixing the knitting finished product being mounted at the lower end of the driving plate, characterized in that: The clamping device (3) comprises a mounting plate (303) fixed to the lower end of the driving plate, two groups of mounting components (301) are arranged in sequence below the mounting plate (303), the mounting components (301) comprise a locking rod (3011), two locking blocks (3017) are arranged on the locking rod (3011), a locking clamp (3015) is fixed to the side wall of the locking block (3017), the two mounting components (301) are connected via a self-locking telescopic rod (302), a self-locking component (3021) is arranged on the side wall of the base of the self-locking telescopic rod (302), the first mounting component (301) is fixedly connected to the mounting plate (303), and the second mounting component (301) is fixedly connected to the mounting plate (303), and the second mounting component (301) is fixedly connected to the mounting plate (303). A counterweight (4) is fixedly connected to the end, and a weight-increasing device (5) is provided at the upper end of the mounting frame (1), wherein the weight-increasing device (5) can increase the weight of the counterweight (4) during the movement of the clamping device (3); a driving mechanism (2) is provided at the upper end of the mounting frame (1), wherein the driving mechanism (2) can control the clamping device (3) to automatically reciprocate; two mounting blocks (702) are provided at the lower end of the mounting plate (303), and two leveling rollers (703) are rotatably connected between the two mounting blocks (702); a leveling mechanism (7) is provided at the lower end of the mounting plate (303), wherein the leveling mechanism (7) controls the leveling roller (703) to move within a predetermined track and completes the clamping of the knitting process finished product.

2. A knitting finished product hanging durability testing device according to claim 1, characterized in that: The middle part of the locking clamp (3015) is concave, and a locking plate is provided in the concave part of the locking clamp (3015). The locking plate and the locking clamp (3015) slide relative to each other, and the side wall of the locking plate is rotatably connected to a locking bolt (3016), and the locking bolt (3016) passes through the locking clamp (3015) and is threadedly connected thereto.

3. A knitting finished product hanging durability testing device according to claim 2, characterized in that: The locking block (3017) is slidably connected to the locking rod (3011); an adjusting gasket (3013) slidably connected to the locking rod (3011) is provided on one side of the locking block (3017); the adjusting gasket (3013) and the locking block (3017) are elastically connected via an elastic member (3014); a side wall of the adjusting gasket (3013) is rotatably connected to an adjusting nut (3012); the adjusting nut (3012) is sleeved on the outside of the locking rod (3011) and is threadedly connected thereto.

4. A knitting finished product hanging durability testing device according to claim 3, characterized in that: The leveling mechanism (7) comprises two position-limiting telescopic rods (701) fixed to the lower end of the mounting plate (303), the position-limiting telescopic rods (701) having telescopic ends (7013), and the ends of the telescopic ends (7013) of the position-limiting telescopic rods (701) are fixedly connected to corresponding mounting blocks (702).

5. A knitting finished product hanging durability testing device according to claim 4, characterized in that: The base of the position-limiting telescopic rod (701) is sealed and slidably connected to a piston (7011) inside, and the telescopic end (7013) is fixed to the side wall of the piston (7011). The piston (7011) and the base of the position-limiting telescopic rod (701) form a pressurized chamber (7012). The pressurized chamber (7012) is connected to two air ducts, and a first one-way valve is provided in the air duct. The side wall of the regulating gasket (3013) is fixedly connected to a pressurized airbag, and the end of the first air duct is connected to the pressurized airbag.

6. A knitting finished product hanging durability testing device according to claim 1, characterized in that: The weight-increasing device (5) comprises a weight-increasing airbag (502) fixedly arranged on the upper end of the mounting plate (303) and a storage box (501); the weight-increasing airbag (502) is an elastic airbag and is connected to two liquid guide tubes, a second one-way valve is arranged in the liquid guide tube, a weight-increasing chamber is arranged in the counterweight component (4), the first liquid guide tube is connected to the weight-increasing chamber, and the second liquid guide tube is connected to the storage box (501); a mounting protrusion is fixedly connected to the upper end of the mounting frame (1), a side wall of the mounting protrusion is provided with a stop plate (503) matched with the weight-increasing airbag (502), and a position control component (6) for adjusting the position of the stop plate (503) is arranged on the mounting protrusion.

7. A knitting finished product hanging durability testing device according to claim 6, characterized in that: The position control component (6) comprises a position control bolt (601) rotatably connected to the side wall of the abutment plate (503); the position control bolt (601) passes through the mounting protrusion and is threadedly connected thereto.

8. The knitting finished product hanging durability testing device according to claim 1, characterized in that: The driving mechanism (2) comprises a reciprocating screw (201) rotatably connected to a mounting frame (1); an outer shell of the reciprocating screw (201) is provided with a screw sleeve (202) slidably connected to the mounting frame (1); the mounting plate (303) is mounted on the lower end of the screw sleeve (202); a motor (203) is fixedly connected to the side of the mounting frame (1); and a terminal end of an output shaft of the motor (203) is fixedly connected to the screw sleeve (202).

9. A method for testing the hanging durability of knitted finished products, characterized in that: The specific steps include: S1, rotating a plurality of adjusting nuts (3012) to adjust the distance between two corresponding locking blocks (3017) so as to match the knitting product; S2, placing the two sides of the upper end of the knitted product at the corresponding positions of the two locking clamps (3015) of the first mounting component (301), and rotating the locking bolt (3016) to adjust the position of the gasket (3013), thereby completing the clamping and fixing of the upper end of the knitted product; S3, adjusting the length of the self-locking telescopic rod (302) according to the length of the finished knitting product, so that the second installation component (301) corresponds to the lower end position of the finished knitting product, and rotating the self-locking component (3021) to complete the locking of the position of the installation component (301); S4, passing the knitted product through two leveling rollers (703), placing the lower end of the knitted product in the locking clamp (3015) of the second mounting component (301), and moving the two leveling rollers (703) downward to complete the pretreatment and clamping of the knitted product; S5, rotating the self-locking component (3021) so that the self-locking telescopic rod (302) is in a freely telescopic state, starting the motor (203), and controlling the clamping device (3) and the knitting product to move back and forth synchronously; S6, adjusting the position of the abutment plate (503), and after the knitting product moves for a predetermined time, recording the status of the knitting product, and completing the detection process.

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