Oil pipe joint coating and shielding tool
By designing a coating masking fixture for oil pipe joints, and using a positioning ring and a positioning cap to form a masking sleeve, the problem of thread contamination during the coating process of oil pipe joints was solved, achieving thread protection and sealing assurance, and improving coating efficiency.
Patent Information
- Application Number
- CN202520335081.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-02-28
AI Technical Summary
In the existing technology, during the coating process of oil pipe joints, the threaded part is easily contaminated by the coating, resulting in a loose connection. The traditional manual masking method is inefficient and has poor sealing performance.
A coating masking fixture for oil pipe joints was designed, including a base, a positioning ring, and a positioning cap. The positioning cap and the positioning rod are fixed inside the positioning ring by a threaded connection to form a masking sleeve that covers the threaded part and ensures that the thread is not contaminated by the coating.
It effectively protects the threads of oil pipe joints, avoids paint contamination, ensures the thread's go-go and sealing performance, and improves the efficiency and quality of the coating process.
Smart Images
Figure CN223915856U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of parts surface treatment equipment, and in particular to a coating and masking fixture for oil pipe joints. Background Technology
[0002] In the surface coating process of tubing fittings, ensuring the integrity of the threaded portion is crucial. As a key structural element of tubing connections, the precision and reliability of the threads directly affect the sealing performance and overall operational safety of the tubing system. If the threads become contaminated with coating material during the coating process, it will not only compromise the thread fit accuracy, leading to loosening or poor sealing during connection, but the hardened lumps formed after the coating dries may also damage the threads during subsequent assembly, significantly shortening the service life of the tubing fitting.
[0003] Currently, the traditional masking methods commonly used in the industry mainly rely on manual operation, such as wrapping with tape or sealing with simple plastic sleeves. However, these methods have many insurmountable drawbacks. Manually wrapping tape is not only time-consuming and labor-intensive, resulting in extremely low production efficiency, but also, due to variations in human operation, it is difficult to guarantee the uniformity and sealing of each wrap, allowing some coating to still seep into the threaded area and cause contamination. Similarly, simple plastic sleeves perform poorly in terms of fit, failing to tightly wrap the threads. During the coating process, they are easily displaced due to the impact of the coating or airflow, making it difficult to guarantee a seal and achieve the desired protective effect. Utility Model Content
[0004] The purpose of this utility model is to solve the defects existing in the prior art and to propose a coating and masking tool for oil pipe joints.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A coating and masking fixture for an oil pipe joint includes a base with a plurality of positioning rings on the base. A positioning rod is disposed inside each positioning ring, and a positioning cap is threaded onto each positioning rod. The positioning rings and the positioning rods are coaxially arranged, and the positioning caps are detachably connected to the top of the positioning rods.
[0007] Furthermore, the base is an angle iron base, and hanging rods are fixedly connected to both ends of the angle iron base, with the hanging rods extending beyond the vertical end face of the angle iron base.
[0008] Furthermore, the lower end face of the positioning ring is fixedly connected to the base, and the inner diameter of the positioning ring is adapted to the outer diameter of the lower threaded section of the oil pipe joint.
[0009] Furthermore, a sleeve is provided inside the positioning cap, the sleeve is provided with internal threads, the sleeve is threadedly connected to the positioning rod, and the sleeve is fixedly connected to the lower end face of the top cover of the positioning cap.
[0010] Furthermore, the inner diameter of the positioning cap is adapted to the outer diameter of the threaded section on the oil pipe connector.
[0011] Beneficial effects
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: the oil pipe joint coating masking tooling set by this utility model protects the threaded section of the oil pipe joint during the surface coating process, avoids paint contamination of the threads, and ensures the thread gauge. Attached Figure Description
[0013] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.
[0014] Figure 1 A schematic diagram of the overall structure of the tooling for coating and masking oil pipe joints.
[0015] Figure 2 This is an enlarged structural diagram of part A.
[0016] In the diagram: 1. Hanging rod; 2. Positioning cap; 3. Positioning ring; 4. Positioning rod; 5. Angle iron seat. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0019] Reference Figures 1-2 A coating and masking fixture for an oil pipe joint includes a base, on which a plurality of positioning rings 3 are provided, and a positioning rod 4 is provided inside the positioning ring 3. A positioning cap 2 is threadedly connected to the positioning rod 4. The positioning rings 3 and the positioning rod 4 are coaxially arranged, and the positioning cap 2 is detachably connected to the top of the positioning rod 4.
[0020] In use, first insert the tubing connector into the positioning rod 4, aligning the end of the tubing connector with the positioning ring 3, ensuring the threaded portion of the tubing connector is fully inserted into the positioning ring 3. Then, connect the positioning cap 2 to the top of the positioning rod 4 via threads, and rotate the positioning cap 2 to gradually move it downwards until the positioning cap 2 contacts the end of the tubing connector, covering the threaded portion of the tubing connector, thus securing the tubing connector. The positioning ring 3 and the positioning cap 2 form a shielding sleeve that matches and completely covers the threaded portion of the tubing connector, preventing thread contamination and ensuring thread gauge compliance.
[0021] In other preferred embodiments, the base is an angle iron base 5, with hanging rods 1 fixedly connected to both ends of the angle iron base 5, extending beyond the vertical end face of the angle iron base 5. The hanging rods 1 facilitate the hanging of the coating fixture.
[0022] In other preferred embodiments, the lower end face of the positioning ring 3 is fixedly connected to the base, and the inner diameter of the positioning ring 3 is adapted to the outer diameter of the lower threaded section of the oil pipe joint.
[0023] In other preferred embodiments, a sleeve is provided inside the positioning cap 2, the sleeve is provided with internal threads, the sleeve is threadedly connected to the positioning rod 4, and the sleeve is fixedly connected to the lower end face of the top cover of the positioning cap 2.
[0024] In other preferred embodiments, the inner diameter of the positioning cap 2 is adapted to the outer diameter of the threaded section on the tubing connector.
[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A coating and masking fixture for an oil pipe joint, characterized in that, The device includes a base, on which several positioning rings are provided. A positioning rod is provided inside each positioning ring, and a positioning cap is threaded onto each positioning rod. The positioning rings and positioning rods are coaxially arranged, and the positioning caps are detachably connected to the top of the positioning rods.
2. The oil pipe joint coating and masking fixture according to claim 1, characterized in that, The base is an angle iron base, and hanging rods are fixedly connected to both ends of the angle iron base, with the hanging rods extending beyond the vertical end face of the angle iron base.
3. The oil pipe joint coating and masking fixture according to claim 1, characterized in that, The lower end face of the positioning ring is fixedly connected to the base, and the inner diameter of the positioning ring is adapted to the outer diameter of the lower threaded section of the oil pipe joint.
4. The oil pipe joint coating and masking fixture according to claim 1, characterized in that, The positioning cap has a sleeve with internal threads, which is threaded to the positioning rod and fixedly connected to the lower end face of the top cover of the positioning cap.
5. The oil pipe joint coating and masking fixture according to claim 1, characterized in that, The inner diameter of the positioning cap is adapted to the outer diameter of the threaded section on the oil pipe joint.