Tear line detection jig for air bag wrapping cloth

Abstract

The utility model provides an airbag wrapping cloth tearing line detection jig, which comprises a base, a first induction device and a second induction device, the base is used for positioning airbag wrapping cloth, and the first induction device detects the number of tearing lines according to the light transmission of the airbag wrapping cloth tearing lines; an independent second sensing device is arranged above each tearing line and is used for detecting the size of the tearing line; the number of the tearing lines is detected through the first sensing device, the size of the tearing lines is detected through the second sensing device, the problem that in the prior art, the number of the tearing lines can be counted and the size of the tearing lines can be measured only through manual visual inspection is solved, and the working efficiency of airbag wrapping cloth tearing line inspection can be greatly improved; and moreover, the number and the size of the tearing lines are more effectively controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of detection and inspection tools for automobile safety airbags, in particular to a tear line detection tool for airbag wrapping cloth. Background Art

[0002] As people's consumption level improves, more and more people use cars as a means of transportation, and the potential safety hazards caused by traffic accidents are also increasing significantly. Equipping cars with airbags is an effective way to solve safety problems.

[0003] The working principle of the airbag is to inflate, protect and deflate in sequence. To complete the inflation work, the airbag must first be able to deploy smoothly. The size and number of the tear lines of the airbag wrapping cloth directly affect whether the airbag can be deployed smoothly. Therefore, the size and number of tear lines are usually listed by customers as CC / SC characteristics (critical / important characteristics).

[0004] First, the number of tear lines on the airbag wrapping cloth used in different models varies, and some have more than 20. Due to factors such as human typesetting and machine influence, the number of tear lines on the airbag wrapping cloth may be too many or too few. If you only rely on human visual counting, it is not only easy to count wrong but also easy to cause visual fatigue.

[0005] In addition, in the prior art, the operator uses a steel ruler to manually measure the size of the tear line. This measurement method has the following problems: 1. External factors have a greater impact. For example, if the measurement method is inappropriate, it is easy to cause large dimensional deviations; 2. For example, when the operator is visually fatigued, it is easy to misread the size, and the size control is not very effective; 3. The size of each tear line must be measured with a steel ruler, which also affects the measurement rhythm and thus affects production efficiency; 4. The number of tear lines can only be confirmed visually, which is also easy to cause missed inspections. Utility Model Content

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a tear line detection jig for airbag wrapping cloth to solve the problems mentioned in the above background technology section.

[0007] The utility model is realized by the following technical solutions:

[0008] A tear line detection jig for an airbag wrapping cloth comprises a base, a first sensing device and a second sensing device, wherein the base is used to position the airbag wrapping cloth, the first sensing device detects the number of tear lines of the airbag wrapping cloth according to the light transmittance of the tear lines of the airbag wrapping cloth; a separate second sensing device is arranged above each tear line, and the second sensing device is used to detect the size of the tear line.

[0009] Furthermore, it also includes a lifting device, which is used to control the second sensing device to move up and down in the vertical direction of the tear line; when the first sensing device determines that the number of tear lines of the airbag wrapping cloth is correct, it transmits a signal to the lifting device, and the lifting device controls the second sensing device to rise, so that the second sensing device measures the size of the tear line.

[0010] Furthermore, it also includes an alarm, and when the second sensing device measures the size of the tear line correctly, the alarm sends out a correct alarm signal.

[0011] Furthermore, the first sensing device is a light sensor.

[0012] Furthermore, the second sensing device includes a mounting plate and a distance sensor, and the distance sensor is arranged on both sides of the mounting plate.

[0013] Furthermore, the base includes a plurality of positioning pins for positioning the airbag wrapping cloth.

[0014] Furthermore, the base is a plate-like structure, and the outer contour of the base is a contoured tooling that matches the outer contour of the airbag wrapping cloth.

[0015] The beneficial effects of the utility model are: a tear line detection jig for airbag wrapping cloth, comprising a base, a first sensing device and a second sensing device, the base is used to position the airbag wrapping cloth, the first sensing device detects the number of tear lines according to the light transmittance of the tear lines of the airbag wrapping cloth; a separate second sensing device is arranged above each tear line, the second sensing device is used to detect the size of the tear line; the number of tear lines is detected by the first sensing device, and the size of the tear lines is detected by the second sensing device, which solves the problem in the prior art that the number of tear lines and the size of tear lines can only be counted and measured by human visual observation, which can greatly improve the work efficiency of the tear line inspection of the airbag wrapping cloth, and is also more effective in controlling the number and size of tear lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of the utility model.

[0017] Figure 2 for Figure 1 AA section view.

[0018] Figure 3 It is a top view of the airbag wrapping cloth of the utility model.

[0019] The above drawings include the following reference numerals:

[0020] 1. Base; 11. Positioning pin; 12. Give way groove; 2. First sensing device; 3. Second sensing device; 31. Mounting plate; 32. Distance sensor; 4. Alarm; 5. Start switch; 6. Lifting plate; a. Airbag wrapping cloth; a1. Tear line; a2. Positioning hole. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.

[0022] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0023] Reference Figures 1 to 3 As shown, a tear line detection fixture for airbag wrapping cloth includes a base 1, a first sensing device 2 and a second sensing device 3. The base 1 is used to position the airbag wrapping cloth a, and the first sensing device 2 detects the number of tear lines a1 according to the light transmittance of the tear lines a1; a separate second sensing device 3 is arranged above each tear line a1, and the second sensing device 3 is used to detect the size of the tear line a1.

[0024] Specifically, according to the light transmittance of the tear line a1, the base 1 is provided with a groove 12 for making way for the second sensing device 3. A corresponding first sensing device 2 is installed on the periphery of each groove 12 and inside the base 1. Preferably, the first sensing device 2 is a light sensor, which receives the external light source penetrating from the tear line a1 position into the base 1. Thus, by calculating the number of first sensing devices 2 receiving the light source, the number of tear lines a1 is equal to the number of tear lines a1, so as to judge whether the number of tear lines a1 is correct. The first sensing device 2 can prevent the airbag wrapping cloth a from entering the next process with too much or too little tear line a1 cut when cutting the airbag wrapping cloth a.

[0025] The second sensing device 3 is used to detect the size of the tear line a1. Specifically, the second sensing device 3 includes a mounting plate 31 and a distance sensor 32. The distance sensor 32 is arranged on both sides of the mounting plate 31. The distance sensor 32 is an infrared sensor. The distance of the obstacle is detected by using the principle that the intensity of the reflection of the infrared signal at different distances from the obstacle is also different. According to the above principle, the distance from the tear line a1 to the mounting plate 31 is calculated, and the width of the tear line a1 is equal to the width of the mounting plate 31 plus the distance calculated by the distance sensor 32 on both sides of the mounting plate 31, and the size width of the tear line a1 is finally obtained. For example, when the tear line a1 that meets the standard requirements is 10mm-12mm, the width of the mounting plate 31 is set to be less than the minimum value of the standard width of the tear line a1, which is 9mm. When the mounting plate 31 cannot be inserted into the tear line a1 or the calculated width is greater than 12mm, the size width of the tear line a1 is unqualified. The second sensing device 3 can prevent the airbag wrapping cloth a with unqualified tear line a1 from entering the next process when cutting the airbag wrapping cloth a.

[0026] As an alternative embodiment of the infrared sensor, other sensors that can calculate the size distance belong to the distance sensor 32.

[0027] The first sensing device 2 and the second sensing device 3 solve the problem in the prior art that the number of tear lines a1 and the size of tear lines a1 can only be counted by visual inspection, which can greatly improve the work efficiency of tear line a1 inspection and is more effective in controlling the number and size of tear lines a1.

[0028] It also includes a lifting device, which includes a lifting plate 6. Each second sensing device 3 is installed on the lifting plate 6. The lifting and lowering movement of the lifting plate 6 controls the second sensing device 3 to move up and down along the vertical direction of the tear line a1. When the first sensing device 2 determines that the number of tear lines a1 is correct, it transmits a signal to the lifting device. The lifting device controls the second sensing device 3 to rise, so that the second sensing device 3 penetrates from bottom to top into the give way groove 12 and finally penetrates between the tear lines a1. Then the second sensing device 3 measures the size of the tear line a1. Therefore, when the first sensing device 2 does not meet the requirements for the number of tear lines a1, the second sensing device 3 cannot be raised, and the second sensing device 3 cannot measure the size of the tear line a1; when the first sensing device 2 meets the requirements for the number of tear lines a1, the second sensing device 3 will automatically rise, and the second sensing device 3 can detect whether the size of the tear line a1 is qualified; if the size of the tear line a1 does not meet the requirements, the alarm 4 will send an alarm signal.

[0029] Preferably, the alarm 4 is an alarm light. When the measurement size of the tear line a1 by the second sensing device 3 is consistent with the standard size, the alarm light displays green; when the measurement size of the tear line a1 by the second sensing device 3 is inconsistent with the standard size, the warning light displays red and an alarm sounds.

[0030] The base 1 includes a plurality of positioning pins 11 for positioning the airbag wrapping cloth a. The number of the positioning pins 11 is more than two. According to the above two points, a cyclic error prevention system is set. When using the inspection fixture of the utility model, the original positioning hole a2 of the airbag wrapping cloth a is first inserted into the positioning pin 11 of the base 1. After the airbag wrapping cloth a is laid, the start switch 5 is turned on. At this time, the first sensing device 2 located at the base 1 starts to work and automatically identifies the number of tear lines a1. When the number does not meet the requirements, the second sensing device 3 cannot be raised, and the next operation (i.e., calculating the size of the tear line a1) cannot be performed.

[0031] The base 1 is a plate-like structure, and the outer contour of the base 1 is a contoured tooling that matches the outer contour of the airbag wrapping cloth a, thereby further improving the accuracy of the inspection tool.

[0032] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A tear line detection jig for airbag wrapping cloth, characterized by: The invention comprises a base (1), a first sensing device (2) and a second sensing device (3), wherein the base (1) is used to locate an airbag wrapping cloth (a), the first sensing device (2) detects the number of tear lines (a1) in the airbag wrapping cloth (a) according to the light transmittance of the tear lines (a1); a separate second sensing device (3) is arranged above each tear line (a1), and the second sensing device (3) is used to detect the size of the tear line (a1).

2. The tear line detection jig for airbag wrapping cloth according to claim 1, characterized in that: It also includes a lifting device, which is used to control the second sensing device (3) to move up and down along the vertical direction of the tear line (a1); when the first sensing device (2) determines that the number of tear lines (a1) is correct, it transmits a signal to the lifting device, and the lifting device controls the second sensing device (3) to rise, so that the second sensing device (3) measures the size of the tear line (a1).

3. The tear line detection jig for airbag wrapping cloth according to claim 1, characterized in that: It also comprises an alarm (4), and when the second sensing device (3) measures the size of the tear line (a1) correctly, the alarm (4) sends out a correct alarm signal.

4. The tear line detection jig for airbag wrapping cloth according to claim 1, characterized in that: The first sensing device (2) is a light sensor.

5. The tear line detection jig for airbag wrapping cloth according to claim 1, characterized in that: The second sensing device (3) comprises a mounting plate (31) and a distance sensor (32), wherein the distance sensor (32) is arranged on both sides of the mounting plate (31).

6. A tear line detection jig for airbag wrapping cloth according to any one of claims 1 to 3, characterized in that: The base (1) comprises a plurality of positioning pins (11) for positioning the airbag wrapping cloth (a).

7. A tear line detection jig for airbag wrapping cloth according to any one of claims 1 to 3, characterized in that: The base (1) is a plate-shaped structure, and the outer contour of the base (1) is a contoured tooling that matches the outer contour of the airbag wrapping cloth (a).

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