A wear-reducing oil coating tool and method for oil pipe hard seal assembly nut

Abstract

The present invention relates to the field of hard seals for oil pipes of automobile engines, and more specifically, to a wear-reducing oil coating tool for assembling nuts for hard seals of oil pipes, comprising an oil pipe positioning device, a wear-reducing oil coating device and an oil dripping device; the oil pipe positioning device and the wear-reducing oil coating device are relatively mounted on a bottom plate. The oil dripping device provides wear-reducing oil to the wear-reducing oil coating device, and the wear-reducing oil coating device coats the wear-reducing oil on the nut at one end of the oil pipe fixed by the oil pipe positioning device, and only coats the wear-reducing oil on the nut. The present invention also includes a method for coating wear-reducing oil during oil pipe assembly using the wear-reducing oil coating tool. The tool design structure of the present invention is simple, low in cost and high in efficiency. The method of the present invention keeps the nut clean, avoids grease contamination in the hard seal area, and completes thread quality inspection during the process of coating the wear-reducing oil.

Description

Technical Field

[0001] The invention relates to the field of automobile engine oil pipe hard seal, in particular to a wear-reducing oil coating tool and method for oil pipe hard seal assembly nuts. Background Art

[0002] The main function of the automobile oil pipe is to connect the high-pressure oil pump and the oil rail, and to deliver the gasoline and diesel pumped into the oil rail. In view of the increasing working pressure of modern engines, the joints between the oil pipe, the oil pump and the oil rail must be hard-sealed to ensure a leak-free function. The hard seals at these two locations need to be achieved by applying a certain amount of torque to cause the material to produce elastic deformation and partial plastic deformation. This torque usually requires special process research based on the materials and designs of the oil pipe, the oil pump joint and the oil rail joint. From the perspective of OEM operating efficiency and product safety, this torque will not be adjusted at will once it is determined.

[0003] The nut is a key part for connecting the oil pipe with the oil pump and the oil rail and realizing hard sealing. It is also the part that is most likely to have microscopic deterioration in the processing technology. When the nut is slightly deteriorated during the processing, the macroscopic dimensions (such as pitch, etc.) are still qualified, but its dynamic friction coefficient may change greatly. The consequence of using such a deteriorated nut is that the axial force of the effective seal will deteriorate after the torque is applied, resulting in the risk of leakage.

[0004] There are two commonly used anti-friction oil coating processes. One is: the nut is immersed in oil and dried before assembly. The disadvantage is that the grease is easily washed away or adsorbed with fine particles during the production of the oil pipe, affecting the cleanliness. The other is: after the production of the oil pipe is completed, the nut and the ball head are immersed in oil and dried as a whole. The disadvantage is that the grease also adheres to the hard seal assembly surface, and the presence of grease easily forms a "false seal". Summary of the invention

[0005] The purpose of the present invention is to provide a wear-reducing oil coating tool and method for oil pipe hard seal assembly nuts, which mainly solves the problems existing in the above-mentioned prior art. It not only avoids the problems of cleanliness deterioration and "false sealing", but also can effectively accommodate the variation of nut thread processing, reduce the friction coefficient and improve the reliability of hard sealing.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide 1. a wear-reducing oil coating tool for a hard seal assembly nut of an oil pipe, characterized in that it includes an oil pipe positioning device, a wear-reducing oil coating device and an oil dripping device;

[0007] The oil pipe positioning device and the anti-friction oil coating device are relatively installed on the bottom plate; the oil dripping device provides anti-friction oil to the anti-friction oil coating device, and the anti-friction oil coating device coats the anti-friction oil on the nut at one end of the oil pipe fixed by the oil pipe positioning device, and only coats the anti-friction oil on the nut.

[0008] Furthermore, the oil pipe positioning device comprises a pipe body fixing device and a nut fixing device; the pipe body fixing device and the nut fixing device are both fixed on a fixing plate, and the fixing plate is fixed to the base plate by bolts.

[0009] Furthermore, the tube body fixing device is one or more oil tube spring pressure blocks; a spring is arranged inside the oil tube spring pressure block, one end of the spring is sleeved on and pressed on a fixed shaft, and the fixed shaft is connected to the fixed plate; the other end of the spring is pressed on the oil tube pressure block, so that the oil tube pressure block presses the oil tube onto the fixed plate from top to bottom.

[0010] Furthermore, the nut fixing device includes a nut pressing block, a nut positioning block and a clamp; the nut positioning block is fixed on the fixing block, and a notch matching the nut is formed on the upper surface of the nut positioning block; the nut pressing block is connected to the clamp, and a notch matching the nut is formed on the lower surface of the nut pressing block; when the clamp is actuated, the nut pressing block fits against the nut positioning block, tightly adheres to and fixes the nut.

[0011] Furthermore, the clamp is a quick clamp, comprising a handle and a transmission lever; one end of the transmission lever is connected to the handle, and the other end is connected to the nut pressing block; the handle drives the nut pressing block to move up and down through the transmission lever to tighten or release the nut.

[0012] Furthermore, the anti-friction oil coating device comprises a handwheel, a transmission screw, a threaded coating head and a threaded seat; the transmission screw passes through the threaded seat and is restricted in radial movement by the threaded seat; the threaded seat is fixed to the base plate; the threaded coating head has a thread pair matching the nut, and is connected to the front end of the transmission screw through an anti-rotation pin and a pitch buffer spring; the handwheel is connected to the rear end of the transmission screw.

[0013] Furthermore, the thread coating head is made of oleophilic material.

[0014] Furthermore, the lipophilic material is a high molecular organic substance containing lipophilic groups.

[0015] Furthermore, support feet are installed below the bottom plate.

[0016] The present invention also provides a method for applying anti-friction oil in oil pipe assembly using an anti-friction oil application tool, which is characterized by comprising the steps of:

[0017] Step S101, using the oil pipe positioning device to position and fix the nut of the oil pipe;

[0018] Step S102: using the oil pipe positioning device to position and fix the oil pipe body;

[0019] Step S103, using the oil dripping device to add the friction reducing oil to the friction reducing oil coating device;

[0020] Step S104, the anti-friction oil coating device is activated, the coating mechanism approaches and contacts the nut, and transfers the anti-friction oil to the thread of the nut;

[0021] Step S105, the anti-friction oil coating device is reset, and the coating mechanism is away from the nut;

[0022] Step S106: Release the oil pipe positioning device and remove the oil pipe.

[0023] In view of the above technical features, the present invention has the following advantages:

[0024] 1. Operate after the tubing forming process is completed to avoid deterioration of cleanliness.

[0025] 2. Avoid grease "contamination" in the hard sealing area to form a "false seal".

[0026] 3. The tooling design has a simple structure, low cost and high efficiency.

[0027] 4. While the screw is being screwed in to transfer the anti-friction oil, the thread quality of the nut thread is also inspected (general gauge), saving a testing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0029] Figure 2 yes Figure 1 A top view of

[0030] Figure 3 It is a structural schematic diagram of an oil pipe spring pressure block of a preferred embodiment of the present invention;

[0031] Figure 4 It is a schematic diagram of the assembly of a thread coating head according to a preferred embodiment of the present invention;

[0032] Figure 5 is a schematic diagram of the oil pipe assembly;

[0033] Figure 6 It is the schematic diagram of the oil pipe nut assembly;

[0034] Figure 7 The present invention is a flowchart of a method for applying friction-reducing oil according to a preferred embodiment of the present invention.

[0035] In the figure: 01-handwheel, 02-transmission screw, 03-quick clamp, 04-nut block, 05-oil pipe spring block, 06-oil pipe, 07-fixed plate, 08-base plate, 09-nut positioning block, 10-nut, 11-thread coating head, 12-thread seat, 13-support foot, 14-thread, 15-oil pipe ball head sealing tape, 16-fixed shaft, 17-spring, 18-oil pipe block, 19-anti-rotation pin, 20-pitch buffer spring. DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0037] See also Figure 5 and Figure 6 The invention discloses a wear-reducing oil coating tool for oil pipe hard seal assembly nuts, which is used for coating wear-reducing oil for nuts 10 at both ends of an oil pipe 06.

[0038] The oil pipe assembly is composed of an oil pipe 06 with upsetting heads at both ends and two nuts 10 sleeved on the pipe body. After the nuts 10 are sleeved on the oil pipe 06, cold upsetting and subsequent processes are performed, and the ball head sealing belt 15 is hard-sealed with the corresponding associated parts through the oiled threads 14. Among them, the threads 14 are nut M14*1.5 internal threads.

[0039] Example

[0040] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The overall structure of a preferred embodiment of a wear-reducing oil coating tool for a hard seal assembly nut of an oil pipe of the present invention comprises an oil pipe positioning device, a wear-reducing oil coating device and an oil dripping device. The oil dripping device provides wear-reducing oil to the wear-reducing oil coating device, and the wear-reducing oil coating device coats the wear-reducing oil on the nut at one end of the oil pipe fixed by the oil pipe positioning device, and only coats the wear-reducing oil on the nut.

[0041] The oil pipe positioning device is fixed on the fixing plate 07, and the fixing plate 07 is fixed on the bottom plate 08 by bolts. The oil pipe positioning device is composed of a pipe body fixing device and a nut fixing device. The pipe body fixing device is composed of one or more oil pipe spring pressing blocks 05.

[0042] A spring 17 is arranged inside the oil pipe spring pressing block 05, one end of the spring 17 is sleeved and pressed on the fixed shaft 16, and the fixed shaft 16 is connected to the fixed plate 07. The other end of the spring 17 is pressed on the oil pipe pressing block 18, so that the oil pipe pressing block 18 presses the oil pipe 06 on the fixed plate 07 from top to bottom. The nut fixing device is composed of a nut pressing block 04, a nut positioning block 09 and a quick clamp 03; the nut positioning block 09 is fixed on the fixed block 07, and a notch is formed on the upper surface of the nut positioning block 09 to match the nut 10. The nut pressing block 04 is connected to the quick clamp 03, and a notch is formed on the lower surface of the nut pressing block 04 to match the nut 10. The quick clamp 03 is composed of a handle and a transmission lever. One end of the transmission lever is connected to the handle, and the other end is connected to the nut pressing block 04. The handle drives the nut pressing block 04 to move up and down through the transmission lever to press or release the nut 10. When the nut pressing block 04 is fitted with the nut positioning block 09 , a space having the same shape as the nut 10 is formed between the two, which closely fits and fixes the nut 10 .

[0043] The anti-friction oil coating device includes a handwheel 01, a transmission screw 02, a thread coating head 11 and a thread seat 12; the transmission screw 02 passes through the thread seat 12 and is restricted from radial movement by the thread seat 12. The thread seat 12 is fixed on the base plate 08. The thread coating head 11 made of oleophilic material has a thread pair matching the nut 10, and is connected to the front end of the transmission screw 02 through an anti-rotation pin 19 and a pitch buffer spring 20. Among them, the oleophilic material is a high molecular organic matter containing oleophilic groups, including plastics, resins, etc. The handwheel 01 is connected to the rear end of the transmission screw 02. Support feet are also installed under the base plate 08.

[0044] See also Figure 7 The present invention also includes a method for assembling an oil pipe using a friction-reducing oil coating tool, comprising the steps of:

[0045] Step S101, using the oil pipe positioning device to position and fix the nut of the oil pipe;

[0046] Step S102: using the oil pipe positioning device to position and fix the oil pipe body;

[0047] Step S103, using the oil dripping device to add the friction reducing oil to the friction reducing oil coating device;

[0048] Step S104, the anti-friction oil coating device is activated, the coating mechanism approaches and contacts the nut, and transfers the anti-friction oil to the thread of the nut;

[0049] Step S105, the anti-friction oil coating device is reset, and the coating mechanism is away from the nut;

[0050] Step S106: Release the oil pipe positioning device and remove the oil pipe.

[0051] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A wear-reducing oil coating tool for oil pipe hard seal assembly nuts, characterized in that: Used to apply anti-friction oil to nuts at both ends of the oil pipe, and to achieve hard sealing connection between the ball head sealing belt and the corresponding associated parts by completing the oiled threads, and the threads are internal threads of the nuts; it includes an oil pipe positioning device, an anti-friction oil coating device and an oil dripping device; The oil pipe positioning device and the anti-friction oil coating device are relatively mounted on the bottom plate; the oil pipe positioning device comprises a pipe body fixing device and a nut fixing device; the pipe body fixing device and the nut fixing device are both fixed on the fixing plate, and the fixing plate is fixed to the bottom plate by bolts; the pipe body fixing device is one or more oil pipe spring pressure blocks; a spring is arranged inside the oil pipe spring pressure block, one end of the spring is sleeved and pressed on the fixing shaft, and the fixing shaft is connected to the fixing plate; the other end of the spring is pressed on the oil pipe pressure block, so that the oil pipe pressure block presses the oil pipe on the fixing plate from top to bottom; the nut fixing device comprises a nut pressure block, a nut positioning block and a clamp; the nut positioning block is fixed on the fixing block, and a notch matching the nut is formed on the upper surface of the nut positioning block; the nut pressure block is connected to the clamp, and a notch matching the nut is formed on the lower surface of the nut pressure block; when the clamp is actuated, the nut pressure block fits with the nut positioning block, tightly adheres to and fixes the nut; The oil dripping device provides the anti-friction oil coating device with anti-friction oil, and the anti-friction oil coating device coats the anti-friction oil on the nut at one end of the oil pipe fixed by the oil pipe positioning device, and only coats the anti-friction oil on the nut; the anti-friction oil coating device comprises a handwheel, a transmission screw, a thread coating head and a thread seat; the transmission screw passes through the thread seat and is restricted in radial movement by the thread seat; the thread seat is fixed on the bottom plate; the thread coating head has a thread pair matching the nut, and is connected to the front end of the transmission screw through an anti-rotation pin and a pitch buffer spring; the handwheel is connected to the rear end of the transmission screw.

2. The anti-friction oil coating tool according to claim 1, characterized in that: The clamp is a quick clamp, comprising a handle and a transmission lever; one end of the transmission lever is connected to the handle, and the other end is connected to the nut pressing block; the handle drives the nut pressing block to move up and down through the transmission lever to tighten or release the nut.

3. The anti-friction oil coating tool according to claim 1, characterized in that: The thread coating head is made of oleophilic material.

4. The anti-friction oil coating tool according to claim 3, characterized in that: The lipophilic material is a high molecular organic substance containing a lipophilic group.

5. The anti-friction oil coating tool according to claim 1, characterized in that: Support feet are also installed below the bottom plate.

6. A method for applying anti-friction oil in oil pipe assembly using the anti-friction oil applying tool as claimed in any one of claims 1 to 5, characterized in that: Contains steps: Step S101, using the oil pipe positioning device to position and fix the nut of the oil pipe; Step S102: using the oil pipe positioning device to position and fix the oil pipe body; Step S103, using the oil dripping device to add the friction reducing oil to the friction reducing oil coating device; Step S104, the anti-friction oil coating device is activated, the coating mechanism approaches and contacts the nut, and transfers the anti-friction oil to the thread of the nut; Step S105, the anti-friction oil coating device is reset, and the coating mechanism is away from the nut; Step S106: Release the oil pipe positioning device and remove the oil pipe.

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