A fabric flame retardancy testing mechanism

Abstract

The present invention relates to a fabric flame retardancy detection mechanism applied to the field of fabric detection. During detection, the fabric is clamped between two clamping strips, and then a driving motor is started to drive a bidirectional screw to rotate forward, so that the two connecting strips approach each other until the fabric is folded in half. After the fabric is folded in half, an igniter is started and moved to the folded portion of the fabric. The igniter ignites and burns the fabric for 1-2 seconds. After ignition is completed, the igniter is turned off and reset. The driving motor is started to drive the bidirectional screw to rotate in reverse, so that the two connecting strips move away from each other until the fabric is straightened. A parallel light plate is started to illuminate the surface of the fabric. Light emitted by the parallel light plate passes through the position of the fire hole in the fabric and illuminates the corresponding light receiver. The degree of combustion of the fabric is judged based on the number of light receivers that receive the light, and the flame retardant effect of the fabric is obtained. Through the above arrangement, compared with traditional manual measurement, the missing area of ​​the fabric after combustion can be obtained more comprehensively, quickly and accurately, thereby improving the accuracy of the detection result.

Description

Technical Field

[0001] The present invention relates to a fabric flame retardancy detection mechanism, in particular to a fabric flame retardancy detection mechanism applied to the fabric detection field. Background Art

[0002] The fabric flame retardant testing device with publication number CN208780666U clamps the fabric on a testing splint during testing, then uses a nozzle to spray flames at the fabric, and finally observes and measures the burning state of the fabric to obtain the fabric's flame retardant effect; the fabric flame retardant testing tool with publication number CN214503486U improves experimental accuracy. During testing, the fabric is also clamped, then flames are sprayed at the fabric, and finally the burning state of the fabric is checked.

[0003] In the prior art, when detecting the burning state of fabric, a ruler is used to measure the defects caused by the burning of the fabric. Since the combustion of the fabric is irregular, the use of a ruler to measure the defective parts results in poor detection accuracy and cannot directly and accurately determine the flame retardant effect of the fabric. Summary of the Invention

[0004] To solve the above problems, the present invention provides a fabric flame retardancy detection mechanism, comprising a test box and two clamping strips, a door panel is installed on the side wall of one end of the test box, a control panel is fixedly connected to the side wall of the other end of the test box, a card strip is fixedly connected to the bottom end of the clamping strip, and two symmetrically arranged guide rollers are fixedly connected to the inner wall of the test box. Two symmetrically arranged stretching plates are slidably connected between the two guide rollers, and the bottom end of the stretching plate is fixedly connected to a connecting strip matching the card strip. The side wall of the test box is fixedly connected to a drive motor, and the output end of the drive motor is fixedly connected to a bidirectional screw rod, which passes through the two stretching plates and is threadedly connected thereto. A parallel light plate is fixedly connected to the inner wall of the top of the test box, and an electrical board is arranged inside the bottom of the test box. A plurality of evenly distributed light receivers are fixedly connected to the interior of the electrical board, and an igniter is installed on the inner wall of one side of the test box.

[0005] A method for detecting flame retardancy of fabrics comprises the following steps:

[0006] S1. Cut the fabric and clamp it between two clamping strips. Then open the door panel and clamp the two clamping strips onto the two connecting strips respectively.

[0007] S2. Start the drive motor to drive the bidirectional screw to rotate forward, so that the two connecting strips approach each other until the fabric is folded in half. Then start the igniter and move it to the folded part of the fabric. The igniter ignites the fabric for 1-2 seconds, and then the igniter is turned off and reset.

[0008] S3. Start the drive motor to drive the bidirectional screw to reverse, so that the two connecting strips move away from each other until the fabric is straightened. Then start the parallel light plate to illuminate the surface of the fabric. The light emitted by the parallel light plate passes through the fire hole position of the fabric and illuminates the corresponding light receiver.

[0009] S4. Determine the burning degree of the fabric according to the number of light receivers that receive the light and obtain the flame retardant effect of the fabric.

[0010] As a further improvement of the present application, an external push rod is fixedly connected to the inner wall of one side of the test box, one end of the external push rod is fixedly connected to an external pressure sensor, and the external pressure sensor is electrically connected to the drive motor; through the above arrangement, when the two stretching plates move away from each other and one of the stretching plates contacts the external pressure sensor, the drive motor stops rotating, and the fabric is in a straight state at this time.

[0011] As a further improvement of the present application, the side wall of one of the stretching plates is fixedly connected to an inner push rod, one end of the inner push rod is fixedly connected to an internal pressure sensor, and the internal pressure sensor is electrically connected to the drive motor; through the above arrangement, when the two stretching plates approach each other and one of the stretching plates contacts the internal pressure sensor, the drive motor stops rotating, and the fabric is in a folded state at this time.

[0012] As another improvement of the present application, a light screening module is installed inside the control panel, and the light screening module is electrically connected to multiple light receivers; since some fabrics have strong light transmittance, the light emitted by the parallel light plate can penetrate the unburned fabric and be received by the light receiver, resulting in errors in the measurement results. Through the above-mentioned setting, when the light passes through the fabric and shines on the light receiver, the light intensity is bound to decrease. At this time, the light screening module filters out the electrical signals of the light receivers with weak light intensity and retains the electrical signals of the light receivers with high light intensity, thereby avoiding the light transmittance of the fabric affecting the measurement results.

[0013] As another improved supplement to the present application, a percentage calculation module is installed inside the control panel, and the percentage calculation module is electrically connected to the light screening module; the electrical signal of the light receiver screened by the light screening module is transmitted to the percentage calculation module, and based on the number of received electrical signals divided by the total number of light receivers, the number of light receivers receiving strong light can be obtained, and the size of the burning area of ​​the cloth can be obtained.

[0014] As another improved supplement to the present application, a telescopic rod is fixedly connected to the bottom end of the test box, and the output end of the telescopic rod is fixedly connected to the electrical board; through the above arrangement, the light emitted by the parallel light plate can better pass through the fire hole and illuminate the light receiver.

[0015] To summarize, during the test, the fabric is clamped between the two clamping strips, and then the drive motor is started to drive the bidirectional screw to rotate forward, so that the two connecting strips are close to each other until the fabric is folded in half. After the fabric is folded in half, the igniter is started and moved to the folded part of the fabric. The igniter ignites and burns the fabric for 1-2 seconds. After the ignition is completed, the igniter is turned off and reset. The drive motor is started to drive the bidirectional screw to reverse, so that the two connecting strips are moved away from each other until the fabric is straightened. The parallel light plate is started to illuminate the surface of the fabric. The light emitted by the parallel light plate passes through the fire hole position of the fabric and illuminates the corresponding light receiver. The degree of combustion of the fabric is judged according to the number of light receivers that receive the light, and the flame retardant effect of the fabric is obtained. Through the above setting, compared with traditional manual measurement, the missing area of ​​the fabric after combustion can be obtained more comprehensively, quickly and accurately, thereby improving the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of the overall appearance of the first embodiment of the present application;

[0017] Figure 2 This is a cross-sectional perspective view of the test box in the first and second embodiments of the present application;

[0018] Figure 3 This is a three-dimensional diagram of the clamping strip in the first embodiment of the present application;

[0019] Figure 4 This is a top cross-sectional view of the test box in the first embodiment of the present application;

[0020] Figure 5 This is a three-dimensional diagram of the stretching plate in the first and second embodiments of the present application;

[0021] Figure 6 This is a diagram showing the state of the cloth being folded in half in the first and second embodiments of the present application;

[0022] Figure 7 This is a state diagram of the light passing through the fire hole in the first and second embodiments of the present application.

[0023] Description of the numbers in the figure:

[0024] 1. Test box; 101. Door panel; 102. Control panel; 2. Clamping strip; 201. Card strip; 3. Guide roller; 4. Extension plate; 5. Connecting strip; 6. Telescopic rod; 7. Drive motor; 8. Bidirectional screw; 9. Ignition; 10. External pressure sensor; 11. Parallel light plate; 12. External push rod; 13. Electrical board; 14. Light receiver; 15. Internal push rod; 16. Internal pressure sensor. DETAILED DESCRIPTION

[0025] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0026] The first implementation method:

[0027] Figure 1-7 A fabric flame retardancy detection mechanism is shown, comprising a test box 1 and two clamping strips 2. A door panel 101 is installed on the side wall of one end of the test box 1, and a control panel 102 is fixedly connected to the side wall of the other end of the test box 1. The bottom end of the clamping strip 2 is fixedly connected to a card strip 201. The inner wall of the test box 1 is fixedly connected to two symmetrically arranged guide rollers 3. Two symmetrically arranged stretching plates 4 are slidably connected between the two guide rollers 3. The bottom end of the stretching plate 4 is fixedly connected to a connecting strip 5 matching the card strip 201. The side wall of the test box 1 is fixedly connected to a drive motor 7. The output end of the drive motor 7 is fixedly connected to a bidirectional screw rod 8. The bidirectional screw rod 8 passes through the two stretching plates 4 and is threadedly connected thereto. A parallel light plate 11 is fixedly connected to the inner wall of the top of the test box 1. An electrical board 13 is provided inside the bottom end of the test box 1. A plurality of evenly distributed light receivers 14 are fixedly connected to the interior of the electrical board 13. An igniter 9 is installed on the inner wall of one side of the test box 1.

[0028] A method for detecting flame retardancy of fabrics comprises the following steps:

[0029] S1. Cut the fabric and clamp it between two clamping strips 2. Then open the door panel 101 and clamp the two clamping strips 2 onto the two connecting strips 5 respectively.

[0030] S2. Start the drive motor 7 to drive the bidirectional screw 8 to rotate forward, so that the two connecting strips 5 are close to each other until the cloth is folded in half. Then start the igniter 9 and move it to the folded part of the cloth. The igniter 9 ignites the cloth and burns it for 1-2 seconds. Then the igniter 9 is turned off and reset.

[0031] S3. Start the drive motor 7 to drive the bidirectional screw 8 to reverse, so that the two connecting strips 5 move away from each other until the fabric is straightened. Then start the parallel light plate 11 to illuminate the surface of the fabric. The light emitted by the parallel light plate 11 passes through the fire hole position of the fabric and illuminates the corresponding light receiver 14.

[0032] S4. Determine the burning degree of the fabric according to the number of light receivers 14 that receive the light and obtain the flame retardant effect of the fabric.

[0033] Through the above setting, compared with traditional manual measurement, the inconvenience of manual measurement is eliminated, and the missing area of ​​the cloth after burning can be obtained more comprehensively, quickly and accurately, thereby improving the accuracy of the detection results.

[0034] The second implementation method:

[0035] Figure 2 and 5-7 shows a fabric flame retardancy detection mechanism, which is different from the first embodiment in that an outer push rod 12 is fixedly connected to the inner wall of one side of the test box 1, and one end of the outer push rod 12 is fixedly connected to the external pressure sensor 10, and the external pressure sensor 10 is electrically connected to the drive motor 7; through the above arrangement, when the two stretching plates 4 move away from each other and one of the stretching plates 4 contacts the external pressure sensor 10, the drive motor 7 stops rotating, and the fabric is in a stretched state at this time, and an inner push rod 15 is fixedly connected to the side wall of one of the stretching plates 4, and one end of the inner push rod 15 is fixedly connected to the internal pressure sensor 16, and the internal pressure sensor 16 is electrically connected to the drive motor 7; through the above arrangement, when the two stretching plates 4 approach each other and one of the stretching plates 4 contacts the internal pressure sensor 16, the drive motor 7 stops rotating, and the fabric is in a folded state at this time.

[0036] A light screening module is installed within the control panel 102 and is electrically connected to multiple light receivers 14. Due to the high light transmittance of some fabrics, the light emitted by the parallel light plate 11 can penetrate the unburned fabric and be received by the light receivers 14, resulting in errors in the measurement results. With the above arrangement, when light passes through the fabric and illuminates the light receivers 14, the light intensity will inevitably decrease. At this time, the light screening module filters out the electrical signals of the light receivers 14 with weak light intensity and retains the electrical signals of the light receivers 14 with high light intensity, thereby preventing the light transmittance of the fabric from affecting the measurement results. A percentage calculation module is installed within the control panel 102 and is electrically connected to the light screening module. The electrical signals of the light receivers 14 filtered by the light screening module are transmitted to the percentage calculation module. By dividing the number of received electrical signals by the total number of light receivers 14, the number of light receivers 14 receiving strong light can be obtained, thereby determining the size of the burned area of ​​the fabric.

[0037] The bottom end of the test box 1 is fixedly connected to a telescopic rod 6, and the output end of the telescopic rod 6 is fixedly connected to the electrical board 13; after the cloth is burned and before the parallel light plate 11 emits light, the telescopic rod 6 can be started to drive the electrical board 13 to move to the lower side of the cloth, so that the light emitted by the parallel light plate 11 can better pass through the fire hole and illuminate the light receiver 14.

[0038] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A fabric flame retardancy testing mechanism, comprising a test box (1) and two clamping strips (2), characterized in that: The side wall at one end of the test box (1) is installed with a door panel (101), the side wall at the other end of the test box (1) is fixedly connected with a control panel (102), the bottom end of the clamping strip (2) is fixedly connected with a clamping strip (201), the inner wall of the test box (1) is fixedly connected with two symmetrically arranged guide rollers (3), two symmetrically arranged stretching plates (4) are slidably connected between the two guide rollers (3), the bottom end of the stretching plate (4) is fixedly connected with a connecting strip (5) matching the clamping strip (201), the test box (1 ) is fixedly connected to the side wall of the test box (1), the output end of the drive motor (7) is fixedly connected to a bidirectional screw rod (8), the bidirectional screw rod (8) passes through the two stretching plates (4) and is threadedly connected thereto, the inner wall of the top of the test box (1) is fixedly connected to a parallel light plate (11), the bottom of the test box (1) is provided with an electrical board (13), the interior of the electrical board (13) is fixedly connected to a plurality of evenly distributed light receivers (14), and an igniter (9) is installed on the inner wall of one side of the test box (1); A light screening module is installed inside the control panel (102), and the light screening module is electrically connected to a plurality of light receivers (14); A percentage calculation module is installed inside the control panel (102), and the percentage calculation module is electrically connected to the brightness screening module.

2. The fabric flame retardancy detection mechanism according to claim 1, characterized in that: The detection method includes the following steps: S1, cutting the fabric and clamping the fabric between the two clamping strips (2), then opening the door panel (101) and clamping the two clamping strips (2) onto the two connecting strips (5) respectively; S2, start the driving motor (7) to drive the bidirectional screw rod (8) to rotate forward, so that the two connecting strips (5) are close to each other until the cloth is folded in half, and then start the igniter (9) to move to the folded part of the cloth, the igniter (9) ignites the cloth and burns it for 1-2 seconds, and then the igniter (9) is turned off and reset; S3, starting the driving motor (7) to drive the bidirectional screw (8) to reverse, so that the two connecting strips (5) move away from each other until the cloth is straightened, and then starting the parallel light plate (11) to illuminate the surface of the cloth, and the light emitted by the parallel light plate (11) passes through the fire hole position of the cloth and illuminates the corresponding light receiver (14); S4. Judging the burning degree of the fabric based on the number of light receivers (14) that receive the light, and obtaining the flame retardant effect of the fabric.

3. The fabric flame retardancy detection mechanism according to claim 1, characterized in that: An outer push rod (12) is fixedly connected to the inner wall of one side of the test box (1), one end of the outer push rod (12) is fixedly connected to an external pressure sensor (10), and the external pressure sensor (10) is electrically connected to the outer push rod (12).

4. The fabric flame retardancy detection mechanism according to claim 1, characterized in that: An inner push rod (15) is fixedly connected to the side wall of one of the stretching plates (4), and an inner pressure sensor (16) is fixedly connected to one end of the inner push rod (15). The inner pressure sensor (16) is electrically connected to the inner push rod (15).

5. The fabric flame retardancy detection mechanism according to claim 1, characterized in that: The bottom end of the test box (1) is fixedly connected to a telescopic rod (6), and the output end of the telescopic rod (6) is fixedly connected to the electrical panel (13).

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