Simple patch for bolt anti-loosening identification
The simple bolt anti-loosening marking patch solves the problem of difficult operation of bolt anti-loosening marking in aircraft manufacturing, and achieves a fast, simple and consistent marking effect, which is applicable to bolts of different specifications.
Patent Information
- Application Number
- CN202422904339.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Existing technologies make it difficult to apply anti-loosening markings to bolts in aircraft manufacturing, especially in confined spaces or with small screws. Spraying and painting methods are slow and difficult to meet production standards.
A simple bolt anti-loosening marking patch is used, which includes an adhesive film, a paint line, and an adhesive base layer. The paint line is applied to the surface of the bolt to achieve quick marking. The paint line is left after the adhesive film separates from the adhesive base layer.
It enables quick and easy bolt anti-loosening marking, ensuring consistent marking and product surface quality. It is applicable to bolts of various specifications and reduces operational complexity and cost.
Smart Images

Figure CN223539283U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a simple bolt anti-loosening marking patch, which is particularly suitable for anti-loosening marking after bolt installation is completed during aircraft assembly. Background Technology
[0002] In aircraft manufacturing, bolt anti-loosening markings are used to indicate the final state of bolt installation and to monitor for any loosening during aircraft use. Currently, bolt anti-loosening markings are typically applied after bolt installation using either spraying or tracing. Spraying involves applying a stencil to the area to be marked, painting the marking lines, and then removing the stencil. The disadvantage of this method is the limited space in aircraft, making it difficult to operate in confined spaces or with small screws. In such cases, tracing is usually used, where marking lines are drawn on the desired location using a pen and paint. Tracing is not only slow, but the width and shape of the marking lines are also difficult to meet production standards. Utility Model Content
[0003] The purpose of this invention is to provide a simple anti-loosening label for bolts, which allows for quick and accurate marking of anti-loosening marks on the surface of bolts.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a simple anti-loosening label patch for bolts, comprising an adhesive film, a paint line, and an adhesive base layer; the adhesive film is applied to the adhesive base layer; the paint line is located between the adhesive film and the adhesive base layer; in use, the side with the paint line attached is aligned with the surface of the bolt to be labeled for anti-loosening, and after application, the adhesive base layer is peeled off.
[0005] Preferably, the paint line is attached to the middle of the adhesive film, and its two sides are respectively attached to the bottom layer and the adhesive film.
[0006] Preferably, a notch is provided at the end where the adhesive film connects to the substrate, so that the substrate can be peeled off.
[0007] Preferably, the adhesive film includes polytetrafluoroethylene material and adhesive; the adhesive is applied to a layer of polytetrafluoroethylene material.
[0008] Preferably, an oily release layer is applied between the adhesive film, the paint line, and the substrate.
[0009] Preferably, there are multiple simple patches, each laid flat on the base film.
[0010] In use, the operator removes the adhesive film from the underlying substrate, then aligns the side of the painted line with the surface of the bolt, nut, or structure requiring anti-loosening marking. The position of the painted line relative to the bolt is then adjusted to ensure it aligns with the center of the bolt, nut, and structure. After applying the patch to the bolt surface, the operator manually rubs it to ensure adhesion before peeling it off. The painted line will then be permanently attached to the bolt surface, completing the anti-loosening marking process.
[0011] Compared with the prior art, the present invention has the following advantages:
[0012] 1. It is simple to make, low in cost, and easy to use, making it suitable for mass production.
[0013] 2. It can quickly mark bolt anti-loosening marks, which is not only easy to operate and use, but also will not cause extra paint residue around the bolt. At the same time, it can ensure that the outline size of all bolt anti-loosening marks is consistent, which improves the surface quality and consistency of the product.
[0014] 3. By changing the specifications and dimensions, the requirements for anti-loosening markings on bolts of various sizes can be covered. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;
[0016] Figure 2 This is a diagram showing the usage state of an embodiment of this utility model;
[0017] Figure 1 In the middle, 11. adhesive film; 12. adhering to the substrate; 13. paint line;
[0018] Figure 2 In the middle, 1. Simple patch; 2. Structure; 3. Nut; 4. Bolt. Detailed Implementation
[0019] The following is in conjunction with the appendix Figure 1-2 Further details of this utility model: A simple bolt anti-loosening marking patch, such as... Figure 1 As shown, it includes an adhesive film 11, a paint line 13, and an attachment base layer 12; the first layer is the adhesive film 11, the second layer is the attachment base layer 12, and the paint line 13 is sandwiched between the adhesive film 11 and the attachment base layer 12; specifically, the main structure of the simple patch 1 is: an adhesive film 11 is coated on the attachment base layer 12, a paint line 13 is attached to the adhesive film 11, and another layer of adhesive film 11 is sprayed on the side of the paint line 13 away from the attachment base layer 12; and no adhesive film 11 is sprayed at the joint between the paint line 13 and the attachment base layer 12.
[0020] To facilitate production and storage, in this embodiment, three simple patches 1 are laid flat on the base film in a row, or five columns in a group. Furthermore, different sizes of simple patches 1 are customized according to different bolt models to ensure that the dimensions of the paint line 13 meet the standard requirements for anti-loosening markings.
[0021] Simple patch manufacturing process:
[0022] I. Assembly of adhesive film 11 and paint line 13:
[0023] First, an adhesive film 11 is manufactured by applying an adhesive to a layer of polytetrafluoroethylene material. The adhesive film 11 is formed by applying an adhesive to a layer of polytetrafluoroethylene material. The paint line 13 to be covered in the middle of the adhesive film 11 is coated with a semi-oily release film adhesive layer to coat the semi-oily release film, so that the paint line 13 is finally attached to the middle position of the adhesive film 11.
[0024] 2. After the adhesive film 11 and the painted line 13 are combined, the adhesive film 11 and the painted line 13 are covered on the substrate 12 which has been coated with an oily release layer, thus completing the production of the simple patch.
[0025] like Figure 2 As shown, after the bolts are installed, when anti-loosening marking is required, select a simple anti-loosening marking patch of the corresponding specification, and remove the adhesive film 11 from the substrate 12. At this time, the paint line 13 is attached to the adhesive film 11. Align the paint line 13 with the bolts 4, nuts 3, and structures 2 that need to be marked, ensuring that the paint line 13 is aligned with the center lines of the bolts 4, nuts 3, and structures 2. Press the adhesive film 11 by hand until the paint line 13 adheres to the bolts and structures. Gently peel off the adhesive film 11. After the paint line 13 dries, the bolt anti-loosening marking is complete.
[0026] The 13mm diameter can be manufactured in multiple sizes. When using it, simply select the corresponding size marking patch based on the bolt diameter.
[0027] The above embodiments are merely preferred embodiments of this utility model and do not constitute a limitation thereof. Any extensions, modifications, etc., made by those skilled in the art without departing from the principle of this utility model should be included within the protection scope of this utility model.
Claims
1. A simple bolt anti-loosening marking patch, characterized in that: It includes an adhesive film, a paint line, and an adhesive backing; the adhesive film is applied to the adhesive backing; the paint line is located between the adhesive film and the adhesive backing; when using, align the side with the paint line with the surface of the bolt to be marked for anti-loosening, apply it, and then peel off the adhesive backing; the paint line is attached to the middle of the adhesive film, with the adhesive backing and the adhesive film on its two sides respectively.
2. The simplified bolt anti-loosening marking patch according to claim 1, characterized in that: A notch is provided at the end where the adhesive film connects to the substrate, so that the substrate can be peeled off.
3. The simplified bolt anti-loosening marking patch according to claim 1, characterized in that: The adhesive film includes polytetrafluoroethylene material and adhesive; the adhesive is applied to a layer of polytetrafluoroethylene material.
4. The simplified bolt anti-loosening marking patch according to claim 1, characterized in that: An oily release layer is applied between the adhesive film, the paint line, and the substrate.
5. The simplified bolt anti-loosening marking patch according to claim 1, characterized in that: The number of simple patches is multiple, and they are laid flat on the base film.