High-pressure oil pipe blanking structure

Abstract

The utility model discloses a high-pressure oil pipe discharging structure, and belongs to the technical field of engines. A high-pressure oil pipe blanking structure comprises a pipe body, the inner diameter of the pipe body is 3.6 mm, the outer diameter of the pipe body is 8 mm, a plating layer is arranged at the end of the pipe body, preferably, the plating layer is a zinc plating layer, the thickness of the plating layer is 0.2 mm, the length of the plating layer is 8-10 mm, a chamfer is arranged at the end of the pipe body, the end of the pipe body is arranged in a flaring shape, a plug is inserted into the pipe body in a sliding mode, and the diameter of the rear portion of the plug is smaller than that of the front portion of the plug. The rear portion of the plug is in clearance fit with the inner wall of the pipe body, a magnet is fixedly installed on the rear portion of the plug, and when the pipe body is used for stamping machining, the risk that a plating layer is too thin, and the rusting risk of a product is increased can be avoided, and meanwhile the problems that a zinc layer is too thick, consequently, the plating layer cracks, and the appearance quality of the product is affected can also be avoided.

Description

Technical Field

[0001] This application relates to the field of engine technology, and more specifically, to a high-pressure oil pipe feeding structure. Background Technology

[0002] With the increasing demands on engine performance from automobiles and industrial equipment, especially the widespread application of high-power, high-speed engines, the pressure of oil flow inside the engine is gradually increasing; high-pressure oil pipes are usually made of high-strength materials such as steel or alloy materials to cope with high-pressure and high-temperature working environments.

[0003] A search revealed that Chinese patent CN2789448Y provides a high-pressure oil pipe. This device uses a welded or threaded structure between the pipe end and a separately processed cone head, avoiding defects such as cracks and hairline cracks, simplifying the manufacturing process, reducing production costs, and improving the quality and reliability of the oil pipe.

[0004] In existing processes, stamping is often used to form a tapered end on the oil pipe, which can effectively improve the processing effect of high-pressure oil pipes. However, during the processing of high-pressure oil pipes, the coating on the outside of the pipe is prone to cracking, affecting the quality of the product. In view of this, we propose a high-pressure oil pipe blanking structure. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The purpose of this application is to provide a high-pressure oil pipe feeding structure to solve the problems mentioned in the background art.

[0007] 2. Technical Solution

[0008] This application is achieved through the following technical solution:

[0009] A high-pressure oil pipe feeding structure includes a pipe body 1 with an inner diameter of 3.6 mm and an outer diameter of 8 mm. The pipe body 1 has a plating layer 2 with a thickness of 0.2 mm at its end. The pipe body 1 has a chamfer at its end and is flared at its end. A plug is slidably inserted inside the pipe body. The diameter of the rear part of the plug is smaller than the diameter of the front part. The rear part of the plug is clearance-fitted with the inner wall of the pipe body. A magnet is fixedly installed at the rear part of the plug.

[0010] As an optional solution to the technical solution of this application, the front end face of the plug is provided with a protective pad, and the middle part of the plug is provided with a through hole that runs from front to back.

[0011] As an optional solution to the technical solution of this application, the coating 2 is a zinc coating, and the length of the coating 2 is 8mm-10mm.

[0012] As an optional solution to the technical solution of this application, the angle between the inner wall of the end of the tube 1 and the central axis of the tube 1 is 30 degrees.

[0013] As an optional solution to the technical solution in this application, the outer diameter of the end of the tube body 1 is 6.5 mm.

[0014] As an optional solution to the technical solution of this application, the end of the coating 2 away from the end of the tube body 1 has a diagonal transition, and the end of the coating 2 near the end of the tube body 1 has a rounded transition.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the beneficial effects of this application are:

[0017] 1) By designing the length and thickness of the zinc coating at the end of the pipe, this application can effectively avoid the risk of product rusting due to the zinc coating being too thin, and can solve the quality problem of zinc coating cracking during the stamping process due to the zinc coating being too thick.

[0018] 2) By setting a plug inside the tube, this application can prevent metal debris from entering the tube during the cold heading process, and the magnet can attract the metal debris, making it convenient to clean the metal debris. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a high-pressure oil pipe feeding structure;

[0020] Figure 2 This is a schematic diagram of a plug structure for a high-pressure oil pipe feeding structure;

[0021] In the diagram: 1. Tube body; 2. Coating; 3. Plug; 301. Magnet; 302. Protective pad; 303. Through hole. Detailed Implementation

[0022] The technical solution of this application will now be clearly and completely described in conjunction with the accompanying drawings.

[0023] Please see Figure 1 and Figure 2 This application provides a high-pressure oil pipe feeding structure, including a pipe body 1 with an inner diameter of 3.6 mm and an outer diameter of 8 mm. The end of the pipe body 1 is provided with a plating layer 2. Preferably, the plating layer 2 is a zinc plating layer with a thickness of 0.2 mm and a length of 8 mm-10 mm. The end of the pipe body 1 is chamfered and flared. The angle between the inner wall of the end of the pipe body 1 and the central axis of the pipe body 1 is 30 degrees, and the outer diameter of the end of the pipe body 1 is 6.5 mm.

[0024] By using the tube body 1 for stamping, it is possible to avoid the plating layer 2 being too thin, which would increase the risk of product rusting, and also to avoid the zinc layer being too thick, which would cause the plating layer 2 to crack and affect the product's appearance quality.

[0025] In addition, the end of the coating 2 away from the end of the tube body 1 has a diagonal transition, and the end of the coating 2 close to the end of the tube body 1 has a rounded transition. By adopting this structural design, the coating 2 can deform synchronously with the tube body 1 during the stamping process, thus avoiding the quality problem of coating 2 cracking.

[0026] Preferably, a plug 3 is slidably inserted inside the tube body 1. The diameter of the rear part of the plug 3 is smaller than the diameter of the front part. The rear part of the plug 3 is in clearance fit with the inner wall of the tube body 1. A magnet 301 is fixedly installed on the rear part of the plug 3. A protective pad 302 is provided on the front end face of the plug 3. A through hole 303 is provided in the middle of the plug 3.

[0027] Before cold heading the tube body 1, the plug 3 is inserted into the tube body 1. The protective pad 302 at the front of the plug 3 can prevent scratches on the inner wall of the tube body 1. At the same time, the through hole 303 in the middle of the plug 3 can balance the air pressure on both sides of the plug 3, making it easy to insert the plug 3 into the tube body 1. During the cold heading process, the metal debris that enters the tube body 1 can be attracted to the outside of the plug 3 by the magnet 301, preventing it from entering the deep inside of the tube body 1. After the processing is completed, the plug 3 and the debris that entered the tube body 1 can be removed together using tools.

Claims

1. A high-pressure oil pipe feeding structure, characterized in that: The tube (1) includes an inner diameter of 3.6 mm and an outer diameter of 8 mm. The tube (1) has a plating layer (2) at its end with a thickness of 0.2 mm. The tube (1) has a chamfer at its end and is flared. A plug (3) is slidably inserted inside the tube (1). The diameter of the rear part of the plug (3) is smaller than the diameter of the front part. The rear part of the plug (3) is clearance-fitted with the inner wall of the tube (1). A magnet (301) is fixedly installed on the rear part of the plug (3).

2. The high-pressure oil pipe feeding structure according to claim 1, characterized in that: The plug (3) has a protective pad (302) on its front end face and a through hole (303) in the middle of the plug (3) that runs through the front and back.

3. The high-pressure oil pipe feeding structure according to claim 1, characterized in that: The coating (2) is a zinc coating, and the length of the coating (2) is 8mm-10mm.

4. The high-pressure oil pipe feeding structure according to claim 1, characterized in that: The angle between the inner wall of the end of the tube (1) and the central axis of the tube (1) is 30 degrees.

5. The high-pressure oil pipe feeding structure according to claim 1, characterized in that: The outer diameter of the end of the tube (1) is 6.5 mm.

6. The high-pressure oil pipe feeding structure according to claim 1, characterized in that: The end of the coating (2) away from the end of the tube body (1) has a diagonal transition, and the end of the coating (2) near the end of the tube body (1) has a rounded transition.

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