Pipe inner wall drawing oil automatic spraying device and system

By designing an automatic spraying device, using the mixing of compressed air and pulling oil, the automatic lubrication of the inner wall of aluminum alloy pipes is achieved, solving the problem of time-consuming and labor-intensive traditional manual oil filling, improving production efficiency and reducing costs.

CN222519558UActive Publication Date: 2025-02-25SMC CHINA +3
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Patent Information

Application Number
CN202420318299.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-02-21
Publication Date
2025-02-25
Estimated Expiration
2034-02-21

AI Technical Summary

Technical Problem

In the traditional drawing process, the inner wall lubrication of aluminum alloy pipes mainly relies on manual oil filling, which is time-consuming and labor-intensive, affecting production efficiency and quality stability.

Method used

An automatic spraying device for pulling oil on the inner wall of the pipe is designed. Through the quick plug connector connection sleeve, hollow core rod, threaded connection sleeve, air transmission pipe and oil-gas mixing device, the mixing of compressed air and pulling oil is realized, and the pipe is automatically sprayed onto the pipe. Inner wall.

Benefits of technology

Automatic lubrication of the inner wall of the pipe is achieved, reducing the use of pulling oil, reducing processing costs, and improving production efficiency.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model provides an automatic pipe inner wall drawing oil spraying device and system. The automatic pipe inner wall drawing oil spraying device comprises a quick connector connecting sleeve, a hollow core rod, a threaded connecting sleeve, an air conveying pipe and an oil-gas mixing device. One end of the hollow core rod is connected with the quick-plug connector connecting sleeve, and the other end is connected with the oil-gas mixing device through the threaded connecting sleeve; an oil path channel and a gas path channel are arranged in the oil-gas mixing device; one end of the hollow core rod is sleeved with the quick-plug connector connecting sleeve, the other end of the hollow core rod abuts against the oil-gas mixing device, a cavity is formed among the quick-plug connector connecting sleeve, the hollow core rod and the oil-gas mixing device, and the cavity is connected with an oil way channel in the oil-gas mixing device; the air transmission pipe penetrates through the gas transmission end on the quick-plug connector connecting sleeve, penetrates through the cavity and is communicated with the gas path channel of the oil-gas mixing device; an oil conveying end is further arranged on the quick-plug connector connecting sleeve and used for being connected with an external oil pump. And the pipe processing cost is reduced, and the pipe production efficiency is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of drawing machines, in particular to an automatic drawing oil spraying device and system for the inner wall of a pipe. Background Art

[0002] When the aluminum alloy pipe is being shaped, it needs to be placed between the inner mold and the outer mold for drawing. A large amount of high-viscosity drawing oil needs to be applied to the inner wall for lubrication to prevent the inner wall from being scratched. The inner wall lubrication of the traditional drawing process mainly relies on manual oiling, which is time-consuming and labor-intensive, and affects production efficiency and quality stability. Summary of the invention

[0003] In view of the above problems, the present utility model is proposed to provide a device and system for automatically spraying drawing oil on the inner wall of a pipe, which overcomes the above problems or at least partially solves the above problems.

[0004] In the first aspect, the utility model provides a device for automatically spraying drawing oil on the inner wall of a pipe, comprising:

[0005] Quick-connect fittings, hollow core rods, threaded connectors, air delivery tubes and oil-gas mixing devices;

[0006] One end of the hollow core rod is connected to the quick-connect connector sleeve, and the other end is connected to the oil-gas mixing device through a threaded connector sleeve;

[0007] The oil-gas mixing device is provided with an oil passage and an air passage;

[0008] The quick-connect fitting sleeve is sleeved on one end of the hollow core rod, and the other end of the hollow core rod is in contact with the oil-gas mixing device. A cavity is formed between the quick-connect fitting sleeve, the hollow core rod and the oil-gas mixing device, and the cavity is connected to the oil passage in the oil-gas mixing device.

[0009] The air transmission pipe passes through the air transmission end of the quick-connect connector sleeve, penetrates the cavity, and is connected to the air path of the oil-gas mixing device;

[0010] The quick-connect connector sleeve is also provided with an oil delivery end, and the oil delivery end is used to be connected to the external oil pump.

[0011] In one embodiment, the oil-gas mixing device comprises:

[0012] A plurality of oil passages arranged in the axial direction, at least one gas passage, and an oil-gas mixing passage arranged in the radial direction, wherein the end of the oil-gas mixing passage is an oil injection port communicating with the outside;

[0013] Ends of the plurality of oil passages and at least one gas passage are communicated with the oil-gas mixing passage.

[0014] In one embodiment, the device further comprises: a first quick-connect connector, a second quick-connect connector, and a third quick-connect connector;

[0015] The first quick-connect connector is located at the drawing oil input end of the quick-connect connector sleeve.

[0016] The second quick-connect connector is located at the air input end of the quick-connect connector sleeve;

[0017] The third quick-connect connector connects the air transmission tube and the air passage.

[0018] In one embodiment, the plurality of oil passages are evenly distributed around at least one gas passage.

[0019] In one embodiment, the air is compressed air.

[0020] In a second aspect, the utility model provides a system for automatically spraying drawing oil on the inner wall of a pipe, comprising:

[0021] The pipe shaping device and the automatic spraying device for drawing oil on the inner wall of the pipe;

[0022] The pipe shaping device is sleeved on the outside of the oil-gas mixing device.

[0023] In one embodiment, the system further comprises a support ring;

[0024] The tube shaping device comprises: an inner mold and an outer mold; the outer mold is located inside the inner mold and maintains a preset distance from the inner mold;

[0025] The inner mold is sleeved on the outside of the oil-gas mixing device;

[0026] The support ring is sleeved on the outside of the oil-gas mixing device and has a height higher than the inner mold.

[0027] In one embodiment, the tube shaping device further comprises: a locking nut;

[0028] The locking nut is sleeved on the outer wall of the oil-gas mixing device;

[0029] The outer wall of the oil-gas mixing device is also provided with an annular protrusion;

[0030] In one embodiment, the support ring is disposed between the annular protrusion and the inner mold.

[0031] In one embodiment, the tube is an aluminum alloy tube; and the support ring is made of nylon.

[0032] The beneficial effects of the above technical solution provided by the utility model include at least:

[0033] The utility model provides an automatic spraying device for drawing oil on the inner wall of a pipe, wherein compressed air is transmitted to the air path of an oil-gas mixing device through an air transmission pipe, and an oil pump transmits drawing oil to the oil path of the oil-gas mixing device through a cavity formed between a hollow core rod and the oil-gas mixing device, and the drawing oil is blown out of an oil spray port by the compressed air in the oil-gas mixing channel and sprayed onto the inner wall of the pipe; therefore, the embodiment of the utility model is easy to automatically apply drawing oil to the inner wall of the pipe and spray the drawing oil onto the inner wall of the pipe, thereby reducing the use of drawing oil, thereby reducing the processing cost of the pipe and improving the production efficiency of the pipe.

[0034] Other features and advantages of the utility model will be described in the subsequent description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures specifically pointed out in the written description, claims, and drawings.

[0035] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0037] Figure 1 A structural block diagram of a device for automatically spraying drawing oil on the inner wall of a pipe provided in an embodiment of the utility model;

[0038] Figure 2 A flow chart of a shaping method using an automatic spraying system for drawing oil on the inner wall of a pipe provided in an embodiment of the utility model.

[0039] Figure numerals: 1, oil pump; 2, first quick-connect connector; 3, second quick-connect connector; 4, quick-connect connector sleeve; 5, threaded sleeve; 6, hollow core rod; 61, air transmission pipe; 7, third quick-connect connector; 8, oil-gas mixing device; 81, oil passage; 82, air passage; 83, oil-gas mixing passage; 84, oil injection port; 85, annular protrusion; 9, support ring; 10, inner mold; 11, locking nut; 12, pipe. DETAILED DESCRIPTION

[0040] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0041] In order to solve the problem of time-consuming and labor-intensive process of applying drawing oil to the inner wall of aluminum alloy pipes, the utility model provides an automatic spraying device for drawing oil on the inner wall of pipes, and its structural block diagram is shown as follows: Figure 1 As shown, including:

[0042] A quick-connect connector sleeve 4, a hollow core rod 6, a threaded connector sleeve 5, an air transmission pipe 61 and an oil-gas mixing device 8;

[0043] One end of the hollow core rod 6 is connected to the quick-connection sleeve 4, and the other end is connected to the oil-gas mixing device 8 through the threaded sleeve 5;

[0044] The oil-gas mixing device 8 is provided with an oil passage 81 and an air passage 82;

[0045] The quick-connect fitting sleeve 4 is sleeved on one end of the hollow core rod 6, and the other end of the hollow core rod 6 is in contact with the oil-gas mixing device 8. A cavity is formed between the quick-connect fitting sleeve 4, the hollow core rod 6 and the oil-gas mixing device 8, and the cavity is connected to the oil passage 81 in the oil-gas mixing device 8;

[0046] The air transmission pipe 61 passes through the air delivery end of the quick-connect connector sleeve 4, penetrates the cavity, and communicates with the air passage 82 of the oil-gas mixing device 8;

[0047] The quick-connect connector sleeve 4 is also provided with an oil delivery end for connecting to an external oil pump 1 ; the oil pump 1 may be, for example, a 1.5 MPa high-pressure, low-flow gear pump including a relief valve and a pressure reducing valve.

[0048] In one embodiment, the oil-gas mixing device 8 comprises:

[0049] A plurality of oil passages 81 arranged in the axial direction, at least one gas passage 82 and an oil-gas mixing passage 83 arranged in the radial direction, the end of the oil-gas mixing passage 83 is an oil injection port 84 communicating with the outside;

[0050] Ends of the plurality of oil passages 81 and the at least one gas passage 82 are connected to the oil-gas mixing passage 83 .

[0051] In order to connect the drawing oil input end and the air input end of the aforementioned quick-connect connector sleeve 4 to the hollow core rod 6, the automatic drawing oil spraying device for the inner wall of the pipe further includes: a first quick-connect connector 2 and a second quick-connect connector 3;

[0052] The first quick-connect connector 2 is located at the drawing oil input end of the quick-connect connector sleeve 4

[0053] The second quick-connect connector 3 is located at the air input end of the quick-connect connector sleeve 4 .

[0054] In order to connect the air transmission tube 61 with the air path 82 , the automatic spraying device for drawing oil on the inner wall of the pipe further includes a third quick-connect connector 7 ; that is, the third quick-connect connector 7 connects the air transmission tube 61 with the air path 82 .

[0055] In order to ensure that the drawing oil sprayed by the automatic drawing oil spraying device on the inner wall of the pipe is evenly distributed on the inner wall of the pipe and plays a lubricating role in the subsequent drawing and shaping process, in the above-mentioned oil-gas mixing device 8, the multiple oil channels 81 are evenly distributed around at least one air channel 82; in one embodiment, the air channel 82 is a φ5 air hole, which is surrounded by an oil channel 81 with 8 φ3 air holes.

[0056] Since compressed air has good fluidity, it is convenient to spray out the drawing oil, so the air can be, for example, 0.6 MPa pipeline compressed air in a factory.

[0057] Based on the same inventive concept, Figure 1 As shown, the embodiment of the utility model also provides an automatic spraying system for drawing oil on the inner wall of a pipe, comprising:

[0058] Pipe shaping device and automatic spraying device for drawing oil on the inner wall of pipe;

[0059] The pipe shaping device is sleeved on the outside of the oil-gas mixing device 8 .

[0060] In one embodiment, the system further comprises a support ring 9;

[0061] The pipe shaping device comprises: an inner mold 10 and an outer mold; the outer mold is located inside the inner mold 10 and maintains a preset distance from the inner mold 10. Figure 1 In the figure, the outer mold is not drawn;

[0062] The inner mold 10 is sleeved on the outside of the oil-gas mixing device 8;

[0063] The support ring 9 is sleeved on the outside of the oil-gas mixing device 8 and is higher than the inner mold 10 .

[0064] The pipe shaping device also includes: a locking nut;

[0065] The locking nut 11 is sleeved on the outer wall of the oil-gas mixing device 8;

[0066] The outer wall of the oil-gas mixing device 8 is also provided with an annular protrusion 85;

[0067] The support ring 9 is arranged between the annular protrusion 85 and the inner mold 10, and is used to support the pipe when the automatic spraying device for drawing oil on the inner wall of the pipe is pushed into the pipe to prevent the pipe from being scratched by contact with the inner mold.

[0068] Since the oil injection port 84 is on the left side of the inner die 10, and the automatic drawing oil spraying device on the inner wall of the tube moves to the left relative to the tube 12 during drawing, the inner die 10 and the inner wall of the tube 12 are in complete contact during the drawing process. Therefore, the drawing oil on the inner wall of the tube 12 will be gradually brought out by the inner die 10 during drawing, leaving only a layer of oil film, which is conducive to subsequent cleaning and hazardous waste discharge.

[0069] In one embodiment, the pipe material may be, for example, an aluminum alloy pipe; and the support ring 9 may be, for example, made of nylon.

[0070] The working principle of the above-mentioned automatic spraying system for drawing oil on the inner wall of the pipe can be referred to Figure 2 The flowchart shown in FIG. 1 includes the following steps:

[0071] S21, threaded connection sleeve 5, support ring 9, inner mold 10 and locking nut 11 according to Figure 1 It is installed on the automatic spraying device of drawing oil on the inner wall of the pipe;

[0072] S22, pushing the automatic drawing oil spraying device for the inner wall of the pipe into the pipe to be shaped, turning on the compressed air and the oil pump, and the automatic drawing oil spraying device automatically sprays the drawing oil to the inner wall of the pipe until the automatic drawing oil spraying device reaches a preset position, and then turning off the compressed air and the oil pump;

[0073] S23, the automatic drawing oil spraying device on the inner wall of the pipe is pulled outward, and the outer mold at a certain distance from the pipe is squeezed inward, and the outer mold and the inner mold work together to form the pipe.

[0074] The utility model provides an automatic spraying device for drawing oil on the inner wall of a pipe, wherein compressed air is transmitted to the air path 82 of the oil-gas mixing device 8 through the air transmission pipe 61, and the oil pump 1 transmits drawing oil to the oil path 81 of the oil-gas mixing device 8 through the cavity formed between the hollow core rod 6 and the oil-gas mixing device 8, and the drawing oil is blown out of the oil spray port 84 by the compressed air in the oil-gas mixing channel 83 and sprayed onto the inner wall of the pipe; therefore, the embodiment of the utility model is easy to automatically apply drawing oil on the inner wall of the pipe and spray the drawing oil onto the inner wall of the pipe, thereby reducing the use of drawing oil, thereby reducing the processing cost of the pipe and improving the production efficiency of the pipe.

Claims

1. An automatic spraying device for drawing oil on the inner wall of a pipe, characterized in that: include: Quick-connect fittings, hollow core rods, threaded connectors, air delivery tubes and oil-gas mixing devices; One end of the hollow core rod is connected to the quick-connect connector sleeve, and the other end is connected to the oil-gas mixing device through a threaded connector sleeve; The oil-gas mixing device is provided with an oil passage and an air passage; The quick-connect fitting sleeve is sleeved on one end of the hollow core rod, and the other end of the hollow core rod is in contact with the oil-gas mixing device. A cavity is formed between the quick-connect fitting sleeve, the hollow core rod and the oil-gas mixing device, and the cavity is connected to the oil passage in the oil-gas mixing device. The air transmission pipe passes through the air transmission end of the quick-connect connector sleeve, penetrates the cavity, and is connected to the air path of the oil-gas mixing device; The quick-connect connector sleeve is also provided with an oil delivery end, and the oil delivery end is used to be connected to an external oil pump.

2. The device according to claim 1, characterized in that The oil-gas mixing device comprises: A plurality of oil passages arranged in the axial direction, at least one gas passage, and an oil-gas mixing passage arranged in the radial direction, wherein the end of the oil-gas mixing passage is an oil injection port communicating with the outside; Ends of the plurality of oil passages and at least one gas passage are communicated with the oil-gas mixing passage.

3. The device according to claim 1 or 2, characterized in that The device also includes: a first quick-connect connector, a second quick-connect connector, and a third quick-connect connector; The first quick-connect connector is located at the drawing oil input end of the quick-connect connector sleeve. The second quick-connect connector is located at the air input end of the quick-connect connector sleeve; The third quick-connect connector connects the air transmission tube and the air passage.

4. The device according to claim 3, characterized in that The plurality of oil passages are evenly distributed around at least one gas passage.

5. The device according to any one of claims 1, 2 and 4, characterized in that The air is compressed air.

6. An automatic spraying system for drawing oil on the inner wall of a pipe, characterized in that: include: A pipe shaping device and an automatic spraying device for drawing oil on the inner wall of a pipe as claimed in any one of claims 1 to 3; The pipe shaping device is sleeved on the outside of the oil-gas mixing device.

7. The system according to claim 6, characterized in that The system also includes a support ring; The pipe shaping device comprises: an inner mold and an outer mold; the outer mold is located inside the inner mold and maintains a preset distance from the inner mold; The inner mold is sleeved on the outside of the oil-gas mixing device; The support ring is sleeved on the outside of the oil-gas mixing device and has a height higher than the inner mold.

8. The system according to claim 7, characterized in that The pipe shaping device further comprises: a locking nut; The locking nut is sleeved on the outer wall of the oil-gas mixing device; The outer wall of the oil-gas mixing device is also provided with an annular protrusion; The inner mold is limited by the annular protrusion and the locking nut.

9. The system according to claim 8, characterized in that The support ring is arranged between the annular protrusion and the inner mold.

10. The system according to any one of claims 7 to 9, characterized in that: The pipe is made of aluminum alloy; the support ring is made of nylon.