A fabric camber detection apparatus

Abstract

The utility model relates to a textile machinery field, concretely relates to a kind of fabric arching detection equipment, it includes servo motor, instrument workbench, control panel, movement swing arm, support shaft, drive rod, transmission rod;Support shaft one end is fixed in workbench other end and is connected with movement swing arm vertically, movement swing arm is divided into upper swing arm and lower swing arm, and the upper end of upper swing arm is provided with fixing device, for fixing fabric;Upper swing arm lower end and lower swing arm upper end are connected by hinge, and the driving end of drive rod is set on the workbench of upper swing arm lower end horizontal position, and drive rod terminal is connected with the lower end of lower swing arm by transmission rod;Servo motor makes drive rod rotate around driving end by driving driving end to drive lower swing arm rotate around upper swing arm lower end, i.

Description

Technical Field

[0001] This utility model relates to textile testing equipment, specifically to a fabric arching testing device. Background Technology

[0002] When a specific area of ​​a fabric is subjected to repeated or sustained forces, a three-dimensional deformation phenomenon of bulging or swelling occurs on the fabric surface. This mainly occurs at the knee of pants, such as during walking or exercise, due to the repeated full movement of the legs, which puts repeated forces on this area; in addition, when a person sits or squats for a long time, this area is also prone to long-term stress, which in turn affects the deformation of the fabric.

[0003] For example, most white-collar workers often sit in front of computers for long periods of time, and their arms are often in a fully extended position. In winter, when wearing long-sleeved or other long-sleeved work clothes, the fabric around the elbows is also prone to prolonged stress.

[0004] Based on publicly available information, Anta Corporation disclosed a fabric in patents numbered 2017100672055 and 201720113020.9 filed in 2017. Arch Simulation device and fabric Arch While there are testing devices available, they are insufficient in simulating actual wear of fabrics and lack well-established testing and rating methods.

[0005] At present, the industry still lacks testing equipment and methods for this type of situation. Utility Model Content

[0006] In view of the above situation, this utility model provides a fabric arching detection device.

[0007] Including servo motors and instrument worktables 、 The control panel consists of a motion swing arm, a support shaft, a drive rod, and a transmission rod. One end of the support shaft is fixed to the worktable, and the other end is vertically connected to the motion swing arm. The motion swing arm is divided into an upper swing arm and a lower swing arm. The upper end of the upper swing arm is equipped with a fixing device for fixing the fabric. The lower end of the upper swing arm is connected to the upper end of the lower swing arm by a hinge. The drive end of the drive rod is set on the worktable at the horizontal position of the lower end of the upper swing arm, and the end of the drive rod is connected to the lower end of the lower swing arm through the transmission rod. The servo motor drives the drive rod to rotate around the drive end on a fixed axis, thereby driving the lower swing arm to rotate around the lower end of the upper swing arm, i.e., the connection point, on a fixed axis.

[0008] Furthermore, the lower swing arm rotates around the lower end of the upper swing arm, i.e., the connection point, at a fixed angle of 0-150°.

[0009] Furthermore, biomimetic materials, such as silicone or artificial skin, are provided on the inner sides of the upper and lower swing arms.

[0010] Furthermore, the upper end of the upper swing arm is fixed by a clamp.

[0011] Furthermore, the upper and lower swing arms are designed to mimic the shape of the human thigh and calf or the shape of the human upper arm and forearm.

[0012] This utility model also provides a method for detecting fabric arching, as follows: 1. Test environment 1.1 Constant temperature and humidity test chamber.

[0013] 1.2 Set up a 3D scanner to observe the arching deformation of the fabric. It can record the sample image in real time, obtain the deformation amount at each point within the observation range, and calculate the arching height and surface area of ​​the deformed area.

[0014] The initial area S0 and height h0 of the connection point between the upper and lower swing arms of the sample were scanned and recorded.

[0015] 2. Sample preparation, 2.1 The sample is fabric. Avoiding the edges of the fabric, cut it according to the direction specified in the garment design, and sew it into a tubular sample according to the pattern of the intended finished product. Depending on the intended use of the fabric, it can be made into trouser legs or sleeves.

[0016] 2.2 If the sample is a garment, the sample is directly mounted on the motion swing arm for testing.

[0017] 3. Experimental process 3.1 With the swing arm in its natural extended state, fix the sample on the swing arm so that it hangs down naturally and remains flat and smooth.

[0018] 3.2 Test methods: Static camber test shall be conducted in accordance with 3.2.1, and dynamic camber test shall be conducted in accordance with 3.2.2.

[0019] 3.2.1 Static method: Set the bending and stretching angle of the moving swing arm to θ0 (for the convenience of the test, define the motion angle θ, that is, the angle of rotation of the lower swing arm, θ=180°-θ0); and hold it for a time t. Then, the moving swing arm returns to its natural straight state. The three-dimensional scanner measures and records the highest point of the sample surface as the arching height h1 and the deformed surface area S1. The arching of the fabric is evaluated by the height difference or area difference before and after.

[0020] 3.2.2 Dynamic method: Set the motion angle θ, and then the motion swing arm returns to the natural straight state, which is one motion. Repeat the motion for a duration t at n times / min. After stopping the motion, the motion swing arm returns to the natural straight state. The three-dimensional scanner measures and records the highest point of the sample surface as the arching height h1 and the deformed surface area S1. The arching of the fabric is evaluated by the height difference or area difference before and after.

[0021] Static methods primarily simulate single movements over extended periods, such as squatting, prolonged sitting, and arm flexion and extension (while working on a computer). Dynamic methods primarily simulate human movement processes, such as long-distance running or other similar exercises.

[0022] The beneficial effects of this utility model through the above technical solutions are as follows: 1. A testing device and method for simulating localized stress on fabrics under repeated or prolonged stress is provided, filling a gap in current laboratory testing.

[0023] 2. By simulating the stress conditions of fabrics under different conditions using static and dynamic methods, the quality of fabrics can be better controlled during the experimental stage before they are launched on the market, thus avoiding negative feedback in the later market.

[0024] 3. The freely designable bending and stretching angles and motion patterns can better simulate the fabric's condition in various environments, providing more convenience for experimental testing. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the present invention.

[0026] Figure 2 This is a front view of the present invention.

[0027] Figure 3 This is a cross-sectional view of the present invention.

[0028] Figure 4 This is experimental example 1 of the present invention.

[0029] Figure 5 This is a rendering of Experimental Example 2 of this utility model.

[0030] In the diagram: 1. Workbench, 2. Control panel, 3. Motion swing arm, 30. Connection point, 31. Upper swing arm, 32. Lower swing arm, 321. End of lower swing arm, 4. Drive rod, 41. Drive rod drive end, 42. Drive rod end, 5. Transmission rod, 6. Support rod, 7. Fixing device, 81. Bending angle θ0, 82. Motion angle θ, 9. Servo motor. Detailed Implementation

[0031] The present invention will be further explained below with reference to the accompanying drawings. Example

[0032] like Figure 1As shown, a fabric arching detection device includes an instrument workbench 1, a control panel 2, a moving swing arm 3, a drive rod 4, a transmission rod 5, a support shaft 6, and a servo motor 9. One end of the support shaft 6 is fixed to the workbench 1, and the other end is vertically connected to the moving swing arm 3. The moving swing arm 3 is divided into an upper swing arm 31 and a lower swing arm 32. The upper end of the upper swing arm 31 is provided with a fixing device 7 for fixing the fabric. The lower end of the upper swing arm 31 is connected to the upper end of the lower swing arm 32 by a hinge, and the connection point is 30. The drive end 41 of the drive rod 4 is set on the workbench at a horizontal position at the lower end of the upper swing arm 31. The end 42 of the drive rod is connected to the end 322 of the lower swing arm through the transmission rod 5. The servo motor 9 drives the drive end 41 of the drive rod to make the drive rod 5 rotate around the drive end 41, thereby driving the lower swing arm 32 to rotate around the connection point 30.

[0033] To further simulate human wear and make the test results more realistically reflect the actual wearing conditions of the fabric, the outer layer of the upper and lower arms is made of biomimetic materials, such as silicone or artificial leather.

[0034] During operation, the control panel simulates a fabric wearing scenario by controlling the operating mode of the servo motors. Here, the flexion-extension angle 8 of the upper swing arm 31 and lower swing arm 32 when naturally extended is set to 180° (e.g., Figure 2 As shown, with connection point 30 as the vertex of the angle. The program setting includes reciprocating motion with a fixed flexion-extension angle. For example, setting the motion angle θ=30° for n reciprocating motions, that is, the motion angle between the upper and lower arms reciprocates n times from 0-30°. This can be used to simulate the situation at the knee when the human body is running, and then detect the arching of the pants at the knee.

[0035] For example, a fixed angle and time can be set for flexion and extension states. For instance, the motion angle θ = 120° can be set and held for a fixed time t. That is, the positions of the upper and lower arms can be fixed so that the angle between them is 120° and held for a time t. This is used to simulate the squatting situation of the human body holding the position for a time t, and then to detect the arching of the pants at the knee.

[0036] The control panel's setting program includes setting the motion trajectory of the drive rod by setting the angle θ of the motion angle 82°, including the motion duration t, and the motion frequency: reciprocating motion n times / min. When n=1, it is the static method of maintaining the same posture for a fixed duration t.

[0037] Based on the fabric arching device provided by this utility model, this utility model also provides a method for detecting fabric arching. 1. Test environment 1.1 Constant temperature and humidity test chamber.

[0038] 1.2 Set up a 3D scanner to observe the arching deformation of the fabric. It can record the sample image in real time, obtain the deformation amount at each point within the observation range, and calculate the arching height and surface area of ​​the deformed area.

[0039] The initial area S0 and height h0 of the connection point between the upper and lower swing arms of the sample were scanned and recorded.

[0040] 2. Sample preparation, 2.1 The sample is fabric. Avoiding the edges of the fabric, cut it according to the direction specified in the garment design, and sew it into a tubular sample according to the pattern of the intended finished product. Depending on the intended use of the fabric, it can be made into trouser legs or sleeves.

[0041] 2.2 If the sample is a garment, the sample is directly mounted on the motion swing arm for testing.

[0042] 2.3 The test sample is mounted on the moving swing arm and fixed by the 7 fixing device.

[0043] 3. Experimental process, 3.1 With the swing arm in its natural extended state, fix the sample on the swing arm so that it hangs down naturally and remains flat and smooth.

[0044] 3.2 Test methods: Static camber test shall be conducted in accordance with 3.2.1, and dynamic camber test shall be conducted in accordance with 3.2.2.

[0045] 3.2.1 Static method: Set θ=120° and hold for t=4h. Then move the swing arm back to its natural straight state. The three-dimensional scanner measures and records the highest point of the sample surface as the arch height h1 and the deformation surface area S1.

[0046] 3.2.2 Dynamic method: Set θ=30°, then move the swing arm back to its natural straight state, which is one movement, and repeat the movement at 40 times / min for 4 hours. After stopping the movement, move the swing arm back to its natural straight state, and use a three-dimensional scanner to measure and record the highest point of the sample surface as the arch height h1 and the deformation surface area S1.

[0047] 4. Test results 4.1 Direct observation method: The arching condition at the connection point is directly observed and rated.

[0048] 4.2 Calculation method: The arch deformation rate is calculated by the change in area or height.

[0049] Arching deformation rate S Rounded to one decimal place in accordance with GB / T 8170.

[0050] …………………………(1) In the formula: S — Arching deformation rate, % S1 — Arching area of ​​the sample after testing, in cm² 2 S0 — Initial area of ​​the sample before testing, in cm² 2 Arching deformation rate h Rounded to one decimal place in accordance with GB / T 8170.

[0051] …………………………(2) In the formula: h — Arching deformation rate, % h1 — The height of the arched area of ​​the sample after testing, in mm h0 — Initial area height of the sample before testing, in mm 5. Test rating The rating is determined by comprehensively considering the results of direct observation and arch deformation rate based on the actual experimental conditions.

[0052] Static method longitudinal testing was used.

[0053] Pants sizes 1-5 were selected for the experiment, simulating prolonged sitting and squatting. The sitting angle was set to 90°, and the squatting angle to 60°. The duration (t) was set to 2 hours and 4 hours for both tests. The experimental diagram is shown below. Figure 4 As shown.

[0054] The test results are as follows: Table 1. Results of the sedentary test:

[0055] Table 2, Results of the squatting test:

[0056] Experimental Example 2 This experimental example uses a dynamic method for testing.

[0057] Samples 6-9 were selected, and the experimental results were set as follows: t=4h, θ=30°, n=20. Figure 5 As shown in the figure, the left and right sides are comparisons before and after the experiment (taking pants as an example, the left side is the pant leg without the experiment, and the right side is the pant leg after the experiment). The arching effect in the figure can be rated by the direct observation method described in 4.1 above; or the arching deformation rate can be calculated by formulas (1) and (2) in 4.2 above. S Conduct a rating.

[0058] The above specific embodiments are provided to give a clearer description of the present invention and are only some embodiments of the present invention, not to limit the scope of protection of the present invention. Any non-creative additions or changes made by those skilled in the art based on these embodiments shall fall within the scope of protection of the present invention.

Claims

1. A fabric arching detection device, comprising a servo motor, an instrument worktable, a control panel, a motion swing arm, a support shaft, a drive rod, and a transmission rod; characterized in that, One end of the support shaft is fixed to the worktable, and the other end is vertically connected to the moving swing arm. The moving swing arm is divided into an upper swing arm and a lower swing arm. The upper end of the upper swing arm is provided with a fixing device for fixing the fabric. The lower end of the upper swing arm is connected to the upper end of the lower swing arm by a hinge. The driving end of the drive rod is set on the worktable at the horizontal position of the lower end of the upper swing arm. The end of the drive rod is connected to the lower end of the lower swing arm through the transmission rod. The servo motor drives the drive end to make the drive rod rotate around the drive end on a fixed axis, thereby driving the lower swing arm to rotate around the lower end of the upper swing arm, i.e., the connection point, on a fixed axis.

2. The fabric arching detection device according to claim 1, characterized in that: The fixing device is a clamp.

3. The fabric arching detection device according to claim 1, characterized in that: The lower swing arm rotates around the lower end of the upper swing arm, i.e., the connection point, at a fixed angle of 0-150°.

4. The fabric arching detection device according to claim 1, characterized in that: The upper and lower swing arms are covered with biomimetic materials.

5. The fabric arching detection device according to claim 4, characterized in that: The biomimetic material is silicone or artificial skin.

6. The fabric arching detection device according to claim 1, characterized in that: The upper swing arm and the lower swing arm respectively simulate the shape of the human thigh and calf or the shape of the human upper arm and forearm.

7. The fabric arching detection device according to claim 1, characterized in that: The control panel can be set with the following parameters: flexion-extension angle θ0, exercise duration t, and exercise frequency: reciprocating motion n times / min.

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