A nonwoven fabric stretching test device

Abstract

The utility model relates to the field of non - woven fabric detection especially, relate to a kind of non - woven fabric tensile testing device, technical solution: a kind of non - woven fabric tensile testing device, including heat preservation box and the rotary cold and hot simulation structure installed on heat preservation box, rotary cold and hot simulation structure includes the small -size cooling fan and small -size air heater installed in two groups of fixed frame, rubber sealing plate is rotationally installed in the edge of heat preservation box inner wall in left-right symmetrical distribution form and servo motor is installed on the upper end of box body carrier, rubber sealing plate is close to the end edge of tensile detection frame and is fixed with rubber clamping block, the utility model is through annular distribution's cooling fan, air heater and sealing structure, accurately control sample surrounding temperature, avoid the interference of temperature fluctuation to test result, solve the problem that existing non - woven fabric tensile detection equipment is difficult to carry out tensile detection under corresponding temperature according to the use environment of different non - woven fabric.

Description

Technical Field

[0001] This utility model belongs to the field of nonwoven fabric testing, specifically relating to a nonwoven fabric tensile testing device. Background Technology

[0002] Nonwoven fabric is a flexible fiber product that can be made without spinning or weaving. It is made by bonding, fusing or weaving fibers together through physical or chemical methods. It has the characteristics of short process flow, wide application and diverse forms, and has penetrated into many fields such as medical, health, industry and agriculture.

[0003] In existing technologies, the tensile strength of different nonwoven fabrics varies significantly at different temperatures. This is determined by the material's molecular structure, thermal stability, and the influence of temperature on its mechanical properties. This temperature difference in tensile strength directly determines the application range and limitations of nonwoven fabrics. Traditional tensile testing devices often struggle to simulate extreme temperature environments when used for tensile testing of nonwoven fabrics, or uneven temperature control can easily lead to data deviations. Furthermore, ordinary insulated boxes are prone to temperature leakage due to gaps, increasing energy consumption and affecting temperature control accuracy. Therefore, this invention proposes a nonwoven fabric tensile testing device to address the problems existing in the prior art. Utility Model Content

[0004] To overcome the problem that existing nonwoven fabric tensile testing equipment cannot perform tensile testing at the appropriate temperature according to the different usage environments of nonwoven fabrics.

[0005] The technical solution of this utility model is as follows: a non-woven fabric tensile testing device, including an insulated box and a rotating cold and heat simulation structure installed on the insulated box. A tensile testing frame is set in the center of the inner wall of the insulated box. The center of the left and right ends of the tensile testing frame is provided with a slot. Two sets of fixed frames are installed through the front and rear ends of the insulated box. A box support frame is fixedly connected to the rear edge of the CNC base. The rotating cold and heat simulation structure includes a small cold air fan and a small hot air fan installed in the two sets of fixed frames, a rubber sealing plate rotatably installed on the edge of the inner wall of the insulated box in a left-right symmetrical distribution, and a servo motor installed on the upper end of the box support frame. A rubber block is fixedly connected to the edge of the rubber sealing plate near the tensile testing frame. The output end of the servo motor passes through the through hole on the box support frame and is fixedly connected to the upper end of the insulated box.

[0006] Preferably, a metal dustproof net is fixed to the inner wall of the two sets of fixed frames near the tensile testing frame. The metal dustproof net is located in the direction of the air outlet of the small air cooler and the small air hoter. The inner wall of the fixed frame and the inner wall of the insulation box are connected to each other.

[0007] Preferably, the outer wall of the left end of the insulated box has an arc-shaped opening, and a left-turning outward-opening arc-shaped door panel is rotatably installed inside the arc-shaped opening. A handle is fixed to the outer edge of the arc-shaped door panel.

[0008] Preferably, a small air cooler, a small hot air cooler, and two sets of rubber sealing plates are arranged in a ring around the tensile testing frame. The rubber blocks are adapted to the slots, one edge of the rubber sealing plate is in contact with the inner wall of the insulation box, and the other end of the rubber sealing plate is in contact with the left and right ends of the tensile testing frame.

[0009] Preferably, the lower end of the tensile testing frame is fixedly connected to a CNC base, and the upper end of the CNC base is provided with a closed groove corresponding to the tensile testing frame. A closed ring is fixedly connected to the center of the lower end of the insulation box, and the closed ring is compatible with the closed groove.

[0010] Preferably, an analysis computer is installed at the upper edge of the CNC base, which is distributed to the left and right of the tensile testing frame, and the box support frame corresponds to the tensile testing frame.

[0011] Preferably, a servo-type tensile testing system is installed inside the tensile testing frame, with an upper movable clamp mounted on the servo tensile testing system and a lower fixed clamp mounted at the bottom of the tensile testing frame, the upper movable clamp and the lower fixed clamp corresponding to each other.

[0012] The beneficial effects of this utility model are:

[0013] 1. The servo motor drives the insulation box to rotate, enabling rapid switching between a small cold air blower and a small hot air blower. Combined with the ring distribution design, it ensures uniform temperature around the sample and meets the testing requirements of multiple temperature ranges.

[0014] 2. By using the snap-fit ​​structure of the rubber sealing plate and the slot, combined with the bottom seal of the sealing ring and the sealing groove, the interior of the heat preservation box is divided into independent working areas, which not only blocks the exchange of airflow between the inside and outside, but also avoids the mixing of hot and cold airflow, thus greatly improving the temperature control efficiency. Attached Figure Description

[0015] Figure 1 The diagram shown is a three-dimensional structural schematic of the nonwoven fabric tensile testing device of this utility model.

[0016] Figure 2 The diagram shown is a three-dimensional disassembled view of the nonwoven fabric tensile testing device of this utility model.

[0017] Figure 3 The diagram shows a three-dimensional structure of the nonwoven fabric tensile testing device of this utility model, including the CNC base, analysis computer, box support frame, tensile testing frame, upper movable clamp, and lower fixed clamp.

[0018] Figure 4The diagram shown is a first three-dimensional structural schematic of the insulated box and servo motor of the nonwoven fabric tensile testing device of this utility model.

[0019] Figure 5 The diagram shown is a second three-dimensional structural schematic of the insulated box and servo motor of the nonwoven fabric tensile testing device of this utility model.

[0020] Figure 6 The diagram shown is a three-dimensional disassembled view of the small cold air blower, small hot air blower, and metal dustproof net of the nonwoven fabric tensile testing device of this utility model.

[0021] Figure 7 The diagram shows a three-dimensional disassembled view of the rubber sealing plate, rubber clip, and arc-shaped door panel of the nonwoven fabric tensile testing device of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1-CNC base, 2-Analysis computer, 3-Insulation box, 4-Box support frame, 5-Tensile testing frame, 6-Upper movable clamp, 7-Lower fixed clamp, 8-Enclosed groove, 9-Slot, 10-Through hole, 11-Fixed frame, 12-Servo motor, 13-Arc-shaped opening, 14-Small air cooler, 15-Metal dustproof mesh, 16-Small hot air cooler, 17-Arc-shaped door panel, 18-Rubber sealing plate, 19-Rubber block, 20-Handle, 21-Enclosed ring. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figures 1-7 This utility model provides an embodiment: a non-woven fabric tensile testing device, including an insulated box 3, and a rotary hot and cold simulation structure installed on the insulated box 3. A tensile testing frame 5 is provided at the center of the inner wall of the insulated box 3. The center of the left and right ends of the tensile testing frame 5 is provided with a slot 9. Two sets of fixed frames 11 are installed through the front and rear ends of the insulated box 3. A box support frame 4 is fixedly connected to the rear edge of the CNC base 1. The rotary hot and cold simulation structure includes a small cold air fan 14 and a small hot air fan 16 installed in the two sets of fixed frames 11, a rubber sealing plate 18 rotatably installed at the edge of the inner wall of the insulated box 3 in a left-right symmetrical distribution, and a servo motor 12 installed on the upper end of the box support frame 4. A rubber block 19 is fixedly connected to the edge of the rubber sealing plate 18 near the tensile testing frame 5. The output end of the servo motor 12 passes through the through hole 10 on the box support frame 4 and is fixedly connected to the upper end of the insulated box 3.

[0025] The servo motor 12 drives the insulation box 3 to rotate, enabling rapid switching between the small cold air blower 14 and the small hot air blower 16. Combined with the ring distribution design, it ensures uniform temperature around the sample, meeting the testing requirements of multiple temperature ranges. With the snap-fit ​​structure of the rubber sealing plate 18 and the slot 9, combined with the bottom seal of the sealing ring 21 and the sealing groove 8, the interior of the insulation box 3 is divided into independent working areas, which not only blocks the exchange of internal and external airflows but also avoids the mixing of hot and cold airflows, greatly improving temperature control efficiency.

[0026] Please see Figures 3-7 In this embodiment, a metal dustproof mesh 15 is fixed to the inner wall of the two sets of fixed frames 11 near the tensile testing frame 5. The metal dustproof mesh 15 is located in the direction of the air outlet of the small air cooler 14 and the small hot air cooler 16. The inner wall of the fixed frame 11 and the inner wall of the insulation box 3 are interconnected. The metal dustproof mesh 15 can filter dust, fiber debris and other impurities in the air, preventing them from entering the interior of the insulation box 3 with the airflow, preventing dust from adhering to the sample surface or tensile testing components, ensuring a clean testing environment, and reducing the interference of impurities on tensile data. An arc-shaped opening 13 is opened through the outer wall of the left end of the insulation box 3. A left-turning outward-opening arc-shaped door panel 17 is rotatably installed in the arc-shaped opening 13. A handle 20 is fixed to the outer edge of the arc-shaped door panel 17. The arc-shaped opening 13 is adapted to the arc-shaped door panel 17, and the opening angle is larger, which makes it easier for operators to quickly pick up and put down samples and adjust the fixtures. It is especially suitable for tensile testing frame 5 with limited space around it. In this scenario, to reduce physical contact during operation, a small cold air blower 14, a small hot air blower 16, and two sets of rubber sealing plates 18 are arranged in a ring around the tensile testing frame 5. The rubber clamp 19 is adapted to the slot 9. One edge of the rubber sealing plate 18 is attached to the inner wall of the insulation box 3, and the other end of the rubber sealing plate 18 is attached to the left and right ends of the tensile testing frame 5. The cold air blower and the hot air blower are arranged in a ring, which can deliver temperature-regulating airflow to the tensile testing frame 5 from multiple directions, avoiding local temperature deviation caused by airflow in one direction, ensuring uniform temperature around the sample, and improving the accuracy of tensile testing at different temperatures. At the same time, the two ends of the rubber sealing plate 18 are attached to the inner wall of the insulation box 3 and the tensile testing frame 5 respectively. With the clamping and fixing of the rubber clamp 19 and the slot 9, the convection between the airflow inside the insulation box 3 and the external environment can be blocked. At the same time, the airflow areas of the cold and hot air blowers are separated to prevent the direct mixing of cold and hot airflows from reducing the temperature control efficiency.

[0027] Please see Figures 3-5In this embodiment, a CNC base 1 is fixedly connected to the lower end of the tensile testing frame 5. A closed groove 8 corresponding to the tensile testing frame 5 is opened on the upper end of the CNC base 1. A closed ring 21 is fixedly connected to the center of the lower end of the insulation box 3. The closed ring 21 is adapted to the closed groove 8. The adapted structure of the closed ring 21 and the closed groove 8 can form a bottom seal when the insulation box 3 is installed, preventing cold and hot air from leaking from the gap between the bottom of the insulation box 3 and the CNC base 1, further improving the heat insulation performance of the insulation box 3 and reducing the load on the temperature control system.

[0028] Please see Figure 3 In this embodiment, an analysis computer 2 is installed on the upper edge of the CNC base 1, which is distributed to the left and right of the tensile testing frame 5. The housing support frame 4 corresponds to the tensile testing frame 5. The analysis computer 2 and the tensile testing frame 5 with built-in servo tensile system are distributed to the left and right, which facilitates the connection of data cables. It can receive tensile force, displacement, temperature and other data in real time, quickly generate test curves and reports, and improve data analysis efficiency. The tensile testing frame 5 is equipped with a servo tensile testing system. An upper movable clamp 6 is installed on the servo tensile testing system, and a lower fixed clamp 7 is installed at the bottom of the tensile testing frame 5. The upper movable clamp 6 and the lower fixed clamp 7 correspond to each other. The servo system is driven by a servo motor 12, which can realize stepless and precise adjustment of tensile speed and has a fast response speed. It can provide real-time feedback and correction of tensile force.

[0029] In use, the operator opens the heat preservation box 3 through the handle 20 of the curved door panel 17, fixes the non-woven fabric to be tested between the upper movable clamp 6 and the lower fixed clamp 7 of the tensile testing frame 5, and closes the curved door panel 17 to form a closed environment 21.

[0030] Next, according to the test requirements, the servo motor 12 drives the insulation box 3 to rotate, so that the small cold air fan 14 or small hot air fan 16 is aligned with the non-woven fabric to be tested. At the same time, the rubber sealing plate 18 rotates with the insulation box 3 and is engaged with the slot 9 through the rubber clip 19, dividing the interior of the insulation box 3 into a working area corresponding to the small cold air fan 14 or small hot air fan 16 and a non-working area. With the sealing structure of the sealing ring 21 and the sealing slot 8, a stable local temperature control space is formed.

[0031] During the tensile test, the CNC base 1 starts the servo-type tensile system in the tensile testing frame 5, and the upper movable clamp 6 moves upward to apply tension to the nonwoven fabric. The tensile force, displacement and other data are collected in real time and transmitted to the analysis computer 2. The analysis computer 2 combines the temperature parameters to generate the tensile curve and test report, and completes the tensile performance test of the nonwoven fabric under different temperature environments.

[0032] Through the above steps, the temperature around the sample is precisely controlled by the ring-shaped distribution of cold and hot air blowers and the sealing structure, avoiding the interference of temperature fluctuations on the test results. This solves the problem that existing nonwoven fabric tensile testing equipment is unable to perform tensile testing at the appropriate temperature according to the different usage environments of nonwoven fabrics.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A nonwoven fabric tensile testing device, comprising an insulated box (3), characterized in that: It also includes a rotating cold and heat simulation structure installed on the heat preservation box (3). A tensile testing frame (5) is set in the center of the inner wall of the heat preservation box (3). The center of the left and right ends of the tensile testing frame (5) is provided with a slot (9). Two sets of fixed frames (11) are installed through the front and rear ends of the heat preservation box (3). A box support frame (4) is fixedly connected to the rear edge of the CNC base (1). The rotating cold and heat simulation structure includes a small cold air fan (14) and a small hot air fan (16) installed in the two sets of fixed frames (11), a rubber sealing plate (18) rotatably installed on the inner wall edge of the heat preservation box (3) in a left-right symmetrical distribution, and a servo motor (12) installed on the upper end of the box support frame (4). A rubber block (19) is fixedly connected to the edge of the rubber sealing plate (18) near the tensile testing frame (5). The output end of the servo motor (12) passes through the through hole (10) on the box support frame (4) and is fixedly connected to the upper end of the heat preservation box (3).

2. The nonwoven fabric tensile testing device according to claim 1, characterized in that: Two sets of fixed frames (11) are fixed with metal dustproof nets (15) on the inner wall of one side near the tensile testing frame (5). The metal dustproof nets (15) are located in the direction of the air outlet of the small air cooler (14) and the small hot air cooler (16). The inner wall of the fixed frame (11) and the inner wall of the heat preservation box (3) are connected to each other.

3. The nonwoven fabric tensile testing device according to claim 1, characterized in that: An arc-shaped opening (13) is provided through the outer wall of the left end of the insulated box (3). A left-turning outward-opening arc-shaped door panel (17) is rotatably installed inside the arc-shaped opening (13). A handle (20) is fixed to the outer edge of the arc-shaped door panel (17).

4. The nonwoven fabric tensile testing device according to claim 1, characterized in that: Small air cooler (14), small hot air cooler (16) and two sets of rubber sealing plates (18) are arranged in a ring around the tensile testing frame (5). The rubber block (19) is adapted to the slot (9). One edge of the rubber sealing plate (18) is in contact with the inner wall of the heat preservation box (3), and the other end of the rubber sealing plate (18) is in contact with the left and right ends of the tensile testing frame (5).

5. The nonwoven fabric tensile testing device according to claim 1, characterized in that: The lower end of the tensile testing frame (5) is fixedly connected to a CNC base (1), and the upper end of the CNC base (1) is provided with a closed groove (8) corresponding to the tensile testing frame (5). The lower center of the insulation box (3) is fixedly connected to a closed ring (21), which is compatible with the closed groove (8).

6. The nonwoven fabric tensile testing device according to claim 1, characterized in that: An analysis computer (2) is installed on the upper edge of the CNC base (1) and is distributed on the left and right sides of the tensile testing frame (5). The box support frame (4) corresponds to the tensile testing frame (5).

7. The nonwoven fabric tensile testing device according to claim 1, characterized in that: The tensile testing frame (5) is equipped with a servo-type tensile testing system. The servo-type tensile testing system is equipped with an upper movable clamp (6), and the bottom of the tensile testing frame (5) is equipped with a lower fixed clamp (7). The upper movable clamp (6) and the lower fixed clamp (7) correspond to each other.

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