A manufacturing process for automobile siren horn filling paint

Abstract

The present application belongs to the field of automobile equipment manufacturing, and provides a kind of automobile siren horn paint filling manufacturing process, which includes screwing siren horn into the threaded end of threaded device pipeline, pouring paint into paint storage container and stirring, automatically opening first pneumatic valve and pneumatic diaphragm pump, slowly pouring paint into siren horn inner cavity through paint pipeline through filter bottom valve, until liquid level sensor controls to corresponding liquid level position, first pneumatic valve is automatically closed, automatically timing 120-180 seconds, second pneumatic valve is automatically opened, allowing paint to automatically flow into paint storage container through paint flow hose, unscrewing siren horn, placing it on temporary storage rack to let paint flow flat, then placing it into baking oven, baking at 100-140 degrees for 30-50 minutes, and the operation is completed; the present application uses paint filling process, uses paint self-gravity combined with photoelectric instrument, pneumatic valve control, to achieve uniform paint on the inner wall of siren horn, thereby improving the appearance of siren horn and ensuring its function.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of automobile equipment manufacturing, in particular to a manufacturing process of automobile siren horn. BACKGROUND

[0002] The automobile horn is a very important component in the vehicle, which can issue a warning to remind other vehicles or pedestrians, and plays a role in ensuring driving safety. The manufacturing process of the automobile horn is also very delicate and complex.

[0003] Firstly, the manufacturing of the automobile horn requires designing a suitable shape and structure. Generally, the shape of the automobile horn can be divided into circular, square, oval and other types, and the structure inside the horn needs to be designed by computer-aided design software. Secondly, the materials required for manufacturing the horn are generally metal or plastic. The metal materials mainly include copper, aluminum, steel, etc., and the plastic materials are mainly ABS, PP, etc. The selection of materials needs to consider the use environment, sound quality and other factors of the horn. Then, the designed horn structure is produced, usually by sheet metal processing, injection molding, etc. During the production process, multiple heat treatment, cooling, cutting and drilling processes need to be carried out to ensure the accuracy of the shape and structure of the horn and meet the design requirements. The finished product is subjected to surface treatment, and the common surface treatment methods are electroplating, spraying and painting. Finally, the voice coil and diaphragm elements of the horn are installed, and the circuit is connected, so that the horn can produce sound. During the entire manufacturing process, multiple tests and adjustments need to be carried out to ensure that the sound quality and volume of the horn meet the specified standards.

[0004] However, the siren horn structure is special, with an elongated horn tube. The inner wall of the horn tube is difficult to deposit a coating during surface treatment. The existing technology usually sprays paint on this part. This process is complex, it is difficult to achieve uniform coating, it is easy to spray on parts that should not be sprayed, and the yield and efficiency are not high, and there is a lot of environmental pollution. SUMMARY

[0005] In order to solve the above technical problems, the present application provides a manufacturing process of automobile siren horn painting to solve the problems in the background art.

[0006] A manufacturing process of automobile siren horn painting, comprising the following steps:

[0007] S1, using a pipe shrinking machine to make a stainless steel pipe into a horn tube, and then using a spinning machine to make a horn mouth, welding the horn tube, the horn mouth and the horn thread to form a siren horn, and then polishing and electroplating the surface of the siren horn;

[0008] S2, pouring paint into a paint storage container and starting a stirring device to continuously stir the paint;

[0009] S3, screw the siren horn into the threaded end of the threaded device pipe;

[0010] S4, open the starting switch, automatically open the first pneumatic valve and pneumatic diaphragm pump, and the paint is slowly filled into the inner cavity of the siren horn through the paint pipeline through the filter bottom valve, until the liquid level sensor controls to the corresponding liquid level position, and the first pneumatic valve is automatically closed;

[0011] S5, automatically open the second pneumatic valve, and let the paint automatically flow into the paint storage container through the paint flow hose;

[0012] S6, unscrew the siren horn, put it into the temporary storage rack, let the paint flow flat for 3-5 minutes, and then put it into the oven, and perform oven 100-140 degree baking for 30-50 minutes, and complete the operation once.

[0013] Preferably, the stainless steel pipe is made of 304 stainless steel material.

[0014] Preferably, the first pneumatic valve is automatically timed for 120-180 seconds after being closed, and the second pneumatic valve is automatically opened.

[0015] Preferably, after 1-2 working days of process production, the paint flow hose and the paint pipeline are put into a special paint cleaning container, and the paint in the inner cavity of the paint flow hose and the paint pipeline is cleaned with a paint cleaning agent.

[0016] Preferably, a baffle is arranged outside the whole paint filling process.

[0017] Preferably, an air extraction pipeline is arranged above the paint filling process of the siren horn, an air extraction fan is arranged inside, and explosion-proof lamps are arranged equidistantly outside, so that the waste gas generated during paint filling is sucked into a waste gas treatment tower through the air extraction pipeline.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] By adopting the paint filling process, the present application uses the gravity of the paint itself combined with photoelectric instruments and pneumatic valve control to achieve uniform paint on the inner wall of the siren horn, thereby improving the appearance of the siren horn and ensuring its function. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the paint filling process flow chart of the present application;

[0021] Figure 2 is an enlarged schematic view of A of the present application.

[0022] In the figure:

[0023] 1. start switch; 2. signal line; 3. pneumatic valve; 4. pneumatic valve; 5. paint flow hose; 6. pipe with internal thread device; 7. liquid level sensor; 8. paint storage container; 9. pneumatic diaphragm pump; 10. paint pipe; 11. paint special cleaning container; 12. siren horn; 13. baffle; 14. filter bottom valve; 15. exhaust fan; 16. explosion-proof lamp; 17. exhaust pipe; 18. stirring device. DETAILED DESCRIPTION

[0024] The embodiments of the present application will be further described in detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0025] As shown in the accompanying Figure 1 to the accompanying Figure 2 :

[0026] Example 1: The present application provides a kind of automobile siren horn 12 paint filling manufacturing process, comprising the following steps:

[0027] 304 stainless steel material is used for stainless steel pipe, and the stainless steel pipe is made into horn pipe by pipe shrinking machine, then the horn pipe is made into horn mouth by spinning machine, the horn pipe and the horn mouth are welded with the horn thread to form the siren horn 12, and the surface is polished and treated by electroplating;

[0028] Paint is filled in the paint storage container 8, and the stirring device is started to continuously stir the paint, so that the relatively thick paint is uniformly mixed;

[0029] The siren horn 12 is screwed into the threaded end of the pipe with internal thread device 6, so that the siren horn 12 is fixed on the pipe with internal thread device 6;

[0030] The start switch 1 is opened, the first pneumatic valve 3 and the pneumatic diaphragm pump 9 are automatically opened, the paint passes through the filter bottom valve 14 and slowly fills into the inner cavity of the siren horn 12 through the paint pipe 10, until the liquid level sensor 7 controls to the corresponding liquid level position, then the first pneumatic valve 3 and the pneumatic diaphragm pump 9 are automatically closed to stop filling; after the first pneumatic valve 3 is closed, it is automatically timed for 120-180 seconds, the second pneumatic valve 4 is automatically opened, and the paint in the inner cavity of the siren horn 12 automatically flows into the paint storage container 8 through the paint flow hose 5;

[0031] The siren horn 12 is unscrewed and placed on the temporary storage rack, the paint is allowed to flow for 3-5 minutes, then it is placed in the oven for oven baking at 100-140 degrees for 30-50 minutes, and one operation is completed.

[0032] After 1-2 working days of process production, the paint flow hose 5 and the paint pipe 10 are placed in the paint special cleaning container 11, and the paint in the inner cavity of the paint flow hose 5 and the paint pipe 10 is cleaned with paint cleaning agent.

[0033] Start switch 1, as described above in the painting process, run 3-5 times, until the pipeline wall residual paint cleaning.

[0034] Example two: set the baffle 13 in the whole painting process periphery; set the exhaust duct above the horn 12 painting process, built-in exhaust fan 15, and set the explosion-proof lamp 16 equidistantly outside, through the exhaust duct to the exhaust gas generated during painting to the exhaust gas treatment tower, thereby reducing environmental pollution.

[0035] In practical application, the process greatly improves the yield, from the conventional painting method of 50%-60% to more than 98%, the production efficiency is improved from 20 per hour to 60 per hour, and the environmental pollution caused by painting is avoided.

[0036] As can be seen from the above, by adopting the painting process, using the gravity of the paint itself combined with photoelectric instruments, pneumatic valve control, the horn inside wall is evenly coated with a layer of uniform paint, thereby improving the appearance of the horn and ensuring its function. It not only solves the problem of uneven coating, low yield and high technical difficulty of painting, but also ensures the uniformity and beauty of the coating, and the manufacturing process is simple, the yield is high, and the environmental pollution is small.

[0037] Importantly, it should be noted that the constructions and arrangements of the present application shown in the various exemplary embodiments are merely illustrative. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of elements or positions can be altered or varied. Accordingly, all such modifications are intended to be included within the scope of the present application. The order or sequence of any process or method steps can be changed or re-sequenced without departing from the scope of the application. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the application. Accordingly, the present application is not limited to particular embodiments described, but extends to various modifications that nevertheless fall within the scope of the appended claims.

[0038] Furthermore, in the interest of providing a concise description of illustrative embodiments, not all features of an actual implementation can be described (that is, not all

[0039] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions can be made. Such development efforts might be complex and time-consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art having the benefit of this disclosure.

[0040] It should be noted that the above-mentioned embodiments are only used to illustrate the technical solutions of the present application, not to limit the present application. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced, without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A process for painting a siren horn of an automobile, characterized by It comprises the following steps: S1, using a pipe shrinking machine to make a stainless steel pipe into a horn pipe, and then using a spinning machine to make a horn mouth, welding the horn pipe and the horn mouth, and the horn thread to form a siren horn, polishing the surface, and then electroplating treatment; S2, filling paint into a paint storage container and starting the stirring device to continuously stir the paint; S3, rotating the siren horn into the threaded end of the in-line threaded device pipeline, thereby fixing the siren horn above the in-line threaded device pipeline, and making the opening of the siren horn upward; S4, opening the starting switch to automatically open the first pneumatic valve and the pneumatic diaphragm pump, and slowly filling the paint into the inner cavity of the siren horn through the paint pipeline through the filter bottom valve until the liquid level sensor controls to the corresponding liquid level position, and the first pneumatic valve is automatically closed; Wherein, the outlet end of the paint pipeline is in communication with the in-line threaded device pipeline; S5, automatically opening the second pneumatic valve to automatically flow the paint into the paint storage container through the paint flow hose; S6, unscrewing the siren horn and placing it on the temporary storage rack, allowing the paint to flow for 3-5 minutes, and then placing it in the oven for 100-140 degree oven baking for 30-50 minutes, completing the operation.

2. A process for manufacturing a lacquered automobile siren horn as claimed in claim 1, wherein The stainless steel pipe is made of 304 stainless steel material.

3. A process for painting of automobile horn as claimed in claim 1 wherein The first pneumatic valve is automatically timed for 120-180 seconds after being closed, and the second pneumatic valve is automatically opened.

4. A process for painting of automobile horn as claimed in claim 1 wherein After 1-2 working days of process production, the paint flow hose and the paint pipeline are placed in a paint special cleaning container, and the paint in the inner cavity of the paint flow hose and the paint pipeline is cleaned with a paint cleaning agent.

5. A process for painting of automobile horn as claimed in claim 1 wherein A baffle is arranged outside the overall paint filling process.

6. A process for painting of automobile horn as claimed in claim 1 wherein An exhaust pipeline is arranged above the paint filling process of the siren horn, an exhaust fan is arranged inside, and explosion-proof lamps are arranged equidistantly outside, and the exhaust pipeline is used to suck the waste gas generated during paint filling into a waste gas treatment tower.

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