Preheating equipment for Dacromet coating process of automobile wheel hub bolts

Abstract

The invention relates to the technical field of metal parts surface treatment, and discloses preheating equipment for a Dacromet coating process of automobile wheel hub bolts. The equipment comprises a coating component, a hoisting component and a preheating component, wherein the preheating component is located at the front side of the coating component, and the hoisting component is located at the outside of the preheating component; the heat generated by an electric heating tube can be used by a coating box, a preheating box and a drying box through the preheating component, thereby avoiding heat waste; the air heated by the electric heating tube heats a Dacromet solution in the coating box and is transported to an aeration tube for aeration, and the fluidity of the Dacromet solution can be improved by preheating the Dacromet solution, and at the same time, the bubbles exposed through the aeration tube can promote the flow of the Dacromet solution, thereby improving the coating efficiency of the Dacromet solution on the automobile wheel hub bolts; after the bolts for fixing a box cover are unscrewed, the box cover can be removed, thereby conveniently taking out and replacing an air filter bag placed in the box.

Description

Technical Field

[0001] The invention belongs to the technical field of metal parts surface treatment, in particular to preheating equipment for a Dacromet coating process of automobile wheel hub bolts. Background Art

[0002] In industrial production, heating processes are often used to change the microstructure inside or on the surface of a material, or in the coating process, the coating on the surface of the material is baked to improve the material's corrosion resistance, impact resistance, and friction resistance, so that the product formed by the material has better performance.

[0003] Dacromet is a new type of surface treatment technology. Compared with the traditional electroplating process, Dacromet is a "green electroplating" with the following advantages:

[0004] 1. Super corrosion resistance: The thickness of the Dacromet film layer is only 4-8um, but its anti-rust effect is 7-10 times more than that of traditional electrogalvanizing, hot-dip galvanizing or paint coating methods;

[0005] 2. No hydrogen embrittlement: Dacromet's processing technology determines that Dacromet has no hydrogen embrittlement, so Dacromet is very suitable for coating of stress-bearing parts;

[0006] 3. High heat resistance: Dacromet can resist high temperature corrosion, and the heat resistance temperature can reach above 300℃, while the traditional galvanizing process will peel off when the temperature reaches 100℃;

[0007] 4. Good bonding and re-coating performance: Dacromet coating has good bonding with the metal substrate and strong adhesion with other additional coatings. The treated parts are easy to spray and color, and the bonding strength with organic coatings even exceeds that of phosphating film;

[0008] 5. Good permeability: Due to the electrostatic shielding effect, deep holes, slits, inner walls of pipes and other parts of the workpiece are difficult to be electroplated with zinc. Therefore, the above parts of the workpiece cannot be protected by electroplating. Dacromet can enter these parts of the workpiece to form a Dacromet coating.

[0009] At present, when the Dacromet coating process is used for automobile wheel hub bolts, they need to be immersed in a container filled with Dacromet liquid. In order to improve the contact effect between the Dacromet liquid and the bolt surface, the Dacromet liquid is usually preheated to increase the fluidity of the Dacromet liquid to improve its coating effect. However, during the preheating process, the Dacromet liquid is in a static state, which will reduce the preheating efficiency of the Dacromet liquid. For this reason, we propose a preheating device for the Dacromet coating process of automobile wheel hub bolts. Summary of the invention

[0010] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a preheating device for the Dacromet coating process of automobile wheel hub bolts, which effectively solves the problem that the Dacromet liquid is in a static state during the preheating process, thereby reducing the preheating efficiency of the Dacromet liquid.

[0011] To achieve the above object, the present invention provides the following technical solution: a preheating device for the Dacromet coating process of automobile wheel hub bolts, comprising a coating component, a hoisting component and a preheating component, characterized in that: the preheating component is located at the front side of the coating component, and the hoisting component is located at the outside of the preheating component;

[0012] The coating assembly includes a coating box, a preheating box is arranged on the right side of the coating box, a drying box is arranged on the right side of the preheating box, a first heating chamber is opened in the box wall of the coating box, a second heating chamber is opened in the box wall of the preheating box, a third heating chamber is opened in the box wall of the drying box, electric heating tubes are evenly arranged in the third heating chamber, and an installation port is opened on the front side of the drying box, and the installation port is connected with the interior of the drying box.

[0013] Preferably, the lifting assembly includes a slide rail, a slide groove is provided at the bottom of the slide rail, a screw is arranged in the slide groove, an outer wall of the screw is screwed with an internal thread slider, an electric telescopic rod is arranged at the bottom of the internal thread slider, a motor is arranged on the left side of the slide rail, and the output end of the motor passes through the left side of the slide rail and is connected to the screw.

[0014] Preferably, the preheating assembly includes an air suction hood, a second air duct and a placement box, the front side of the air suction hood is connected to the first exhaust fan, the front side of the first exhaust fan is connected to the first air duct, an air filter bag is placed inside the placement box, the top of the placement box is fixedly connected to a box cover by bolts, the front side of the placement box is connected to the second exhaust fan, the front side of the second exhaust fan is connected to the third air duct, and the air outlet of the third air duct is connected to the aeration pipe.

[0015] Preferably, the air suction hood is arranged on the front side of the drying box and is connected to the installation port on the front side of the drying box, and the air outlet of the first air duct passes through the bottom of the preheating box and is connected to the second heating chamber.

[0016] Preferably, the air inlet of the second air duct passes through the rear side of the preheating box and is connected to the second heating chamber, the air outlet of the second air duct passes through the bottom of the coating box and is connected to the first heating chamber, and the placement box is arranged on the front side of the coating box and is connected to the first heating chamber.

[0017] Preferably, the aeration pipe is arranged at the bottom of the inner wall of the coating box, and the air outlet of the third air duct passes through the front side of the coating box and is connected with the aeration pipe.

[0018] Preferably, support feet are evenly arranged at the bottom of the coating box, preheating box and drying box, and two groups of support columns are evenly arranged at the front and rear sides of the slide rail, and the bottom of the support column is flush with the bottom of the support foot.

[0019] Preferably, the slide rail is located above the coating box, the preheating box and the drying box, and a hanger is provided at the bottom of the telescopic end of the electric telescopic rod.

[0020] Preferably, hooks are evenly hung on the outer side wall of the hanger, and a hanging basket is provided at the bottom of the hook. The hanging basket is located above the coating box and corresponds to the preheating box and the drying box.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The heat generated by the electric heating tube can be used by the coating box, preheating box and drying box through the preheating component to avoid heat waste;

[0023] 2. The air heated by the electric heating tube heats the Dacromet solution in the coating box and is transported to the aeration tube for aeration. The preheating of the Dacromet solution can improve its fluidity. At the same time, the bubbles released through the aeration tube can promote the flow of the Dacromet solution, thereby improving the coating efficiency of the Dacromet solution on the automobile wheel hub bolts.

[0024] 3. After unscrewing the bolts used to fix the box cover, the box cover can be removed, so that the air filter bag placed in the box can be easily taken out and replaced. The air filter bag can make the aeration pipe expose clean gas to avoid contamination of the Dacromet solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0026] In the attached picture:

[0027] Figure 1 It is a structural schematic diagram of the preheating equipment of the Dacromet coating process for automobile wheel hub bolts of the present invention;

[0028] Figure 2 It is a rear side view of the preheating equipment of the Dacromet coating process for automobile wheel hub bolts of the present invention;

[0029] Figure 3 This is a bottom view of the preheating equipment of the Dacromet coating process for automobile wheel hub bolts of the present invention;

[0030] Figure 4 It is a front cross-sectional view of the preheating equipment of the Dacromet coating process for automobile wheel hub bolts of the present invention;

[0031] Figure 5 It is a right side cross-sectional view of the preheating equipment of the Dacromet coating process for automobile wheel hub bolts of the present invention;

[0032] Figure 6 It is a left side cross-sectional view of the preheating equipment of the Dacromet coating process for automobile wheel hub bolts of the present invention.

[0033] In the figure: 100, coating assembly; 200, lifting assembly; 300, preheating assembly; 1, coating box; 11, preheating box; 12, drying box; 13, supporting feet; 14, first heating chamber; 15, second heating chamber; 16, third heating chamber; 17, electric heating tube; 2, supporting column; 21, slide rail; 22, motor; 23, screw; 24, internal thread slider; 25, electric telescopic rod; 26, hanger; 27, hanging basket; 28, hook; 3, suction hood; 31, first exhaust fan; 32, first air duct; 33, second air duct; 34, third air duct; 35, aeration pipe; 36, placement box; 37, box cover; 38, air filter bag; 39, second exhaust fan. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] like Figure 1-Figure 6 As shown, the present invention provides a technical solution: a preheating device for a Dacromet coating process of a wheel hub bolt of an automobile, comprising a coating component 100, a hoisting component 200 and a preheating component 300, wherein the preheating component 300 is located at the front side of the coating component 100, and the hoisting component 200 is located at the outside of the preheating component 300;

[0036] The coating assembly 100 includes a coating box 1, a preheating box 11 is fixedly arranged on the right side of the coating box 1, a drying box 12 is fixedly arranged on the right side of the preheating box 11, a first heating chamber 14 is opened in the box wall of the coating box 1, a second heating chamber 15 is opened in the box wall of the preheating box 11, a third heating chamber 16 is opened in the box wall of the drying box 12, electric heating tubes 17 are evenly and fixedly arranged in the third heating chamber 16, and an installation port is opened on the front side of the drying box 12, and the installation port is connected to the interior of the drying box 12.

[0037] The lifting assembly 200 includes a slide rail 21, a slide groove is provided at the bottom of the slide rail 21, a screw rod 23 is rotatably arranged in the slide groove, an outer wall of the screw rod 23 is screwed with an internal thread slider 24, an electric telescopic rod 25 is fixedly arranged at the bottom of the internal thread slider 24, and a motor 22 is fixedly arranged on the left side of the slide rail 21, and the output end of the motor 22 passes through the left side of the slide rail 21 and is connected to the screw rod 23.

[0038] The preheating component 300 includes an air suction hood 3, a second air duct 33 and a placement box 36. The front side of the air suction hood 3 is connected to the first exhaust fan 31, and the front side of the first exhaust fan 31 is connected to the first air duct 32. An air filter pack 38 is placed inside the placement box 36. The top of the placement box 36 is fixedly connected to a box cover 37 by bolts. After unscrewing the bolts used to fix the box cover 37, the box cover 37 can be removed, so that the air filter pack 38 in the placement box 36 can be easily taken out and replaced. The air filter pack 38 can make the aeration pipe 35 expose clean gas to avoid contamination of the Dacromet solution. The front side of the placement box 36 is connected to the second exhaust fan 39, and the front side of the second exhaust fan 39 is connected to the third air duct 34. The air outlet of the third air duct 34 is connected to the aeration pipe 35.

[0039] The air suction hood 3 is fixedly arranged at the front side of the drying box 12 and is connected to the installation port at the front side of the drying box 12. The air outlet of the first air duct 32 passes through the bottom of the preheating box 11 and is connected to the second heating chamber 15. The air inlet of the second air duct 33 passes through the rear side of the preheating box 11 and is connected to the second heating chamber 15. The air outlet of the second air duct 33 passes through the bottom of the coating box 1 and is connected to the first heating chamber 14. The placement box 36 is fixedly arranged at the front side of the coating box 1 and is connected to the first heating chamber 14. The aeration pipe 35 is fixedly arranged at the bottom of the inner side wall of the coating box 1. The air outlet of the third air duct 34 passes through the front side of the coating box 1 and is connected to the first heating chamber 14. The aeration pipes 35 are connected, and support feet 13 are evenly fixed on the bottom of the coating box 1, the preheating box 11 and the drying box 12 respectively. Two groups of support columns 2 are evenly fixed on the front and rear sides of the slide rail 21 respectively. The bottom of the support column 2 is flush with the bottom of the support foot 13. The slide rail 21 is located above the coating box 1, the preheating box 11 and the drying box 12. A hanger 26 is fixed at the bottom of the telescopic end of the electric telescopic rod 25, and hooks 28 are evenly hung on the outer wall of the hanger 26. A hanging basket 27 is fixed at the bottom of the hook 28. The hanging basket 27 is located above the coating box 1 and corresponds to the preheating box 11 and the drying box 12.

[0040] Method of using the preheating equipment for the Dacromet coating process of automobile wheel hub bolts:

[0041] Step 1: Pour the Dacromet solution into the coating box 1, and heat the inside of the drying box 12 through the electric heating tube 17. At this time, the hot air heated inside the drying box 12 is input into the second heating chamber 15 along the suction hood 3 and the first air duct 32 through the first exhaust fan 31, so as to heat the inside of the preheating box 11. Since the hot air generates heat loss during the transportation process, the temperature in the preheating box 11 is lower than the temperature in the coating box 1, so that the preheating box 11 has a preheating function. At this time, the hot air entering the second heating chamber 15 will be input into the first heating chamber 14 along the second air duct 33 as it flows, so as to preheat the Dacromet solution in the coating box 1, thereby improving the fluidity of the Dacromet solution.

[0042] Step 2: With the operation of the second exhaust fan 39, the hot air in the first heating chamber 14 is input into the placement box 36 and filtered through the air filter bag 38. Then, the filtered clean gas is input into the aeration pipe 35 along the third air duct 34 for aeration. The automobile wheel hub bolts are placed in the hanging basket 27, and the hanging basket 27 is suspended under the hanger 26 by the hook 28. The suspended hanging basket 27 is lowered into the Dacromet solution in the coating box 1 by the electric telescopic rod 25 for coating. The bubbles exposed through the aeration pipe 35 can promote the flow of the Dacromet solution, thereby improving the coating efficiency of the Dacromet solution on the automobile wheel hub bolts.

[0043] Step three: The motor 22 drives the screw rod 23 to rotate, and the screw rod 23 drives the internal threaded slider 24 to move to the right, so that the electric telescopic rod 25 can drive the hanging basket 27 to move into the preheating box 11 and the drying box 12 in turn, and the automobile wheel hub bolts in the hanging basket 27 are preheated by the preheating box 11, and the automobile wheel hub bolts in the hanging basket 27 are dried by the drying box 12.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A preheating device for a Dacromet coating process for automobile wheel hub bolts, comprising a coating component (100), a hoisting component (200) and a preheating component (300), characterized in that: The preheating component (300) is located at the front side of the coating component (100), and the hanging component (200) is located at the outside of the preheating component (300); The coating assembly (100) comprises a coating box (1), a preheating box (11) is arranged on the right side of the coating box (1), a drying box (12) is arranged on the right side of the preheating box (11), a first heating chamber (14) is opened in the box wall of the coating box (1), a second heating chamber (15) is opened in the box wall of the preheating box (11), a third heating chamber (16) is opened in the box wall of the drying box (12), electric heating tubes (17) are evenly arranged in the third heating chamber (16), and an installation opening is opened on the front side of the drying box (12), and the installation opening is communicated with the interior of the drying box (12).

2. The preheating equipment for the Dacromet coating process of automobile wheel hub bolts according to claim 1 is characterized in that: The hoisting assembly (200) comprises a slide rail (21), a slide groove is provided at the bottom of the slide rail (21), a screw rod (23) is arranged in the slide groove, an outer wall of the screw rod (23) is screwed with an internal thread slider (24), an electric telescopic rod (25) is arranged at the bottom of the internal thread slider (24), a motor (22) is arranged on the left side of the slide rail (21), and an output end of the motor (22) passes through the left side of the slide rail (21) and is connected to the screw rod (23).

3. The preheating equipment for the Dacromet coating process of automobile wheel hub bolts according to claim 2 is characterized in that: The preheating component (300) comprises an air suction hood (3), a second air duct (33) and a placement box (36); the front side of the air suction hood (3) is connected to a first exhaust fan (31); the front side of the first exhaust fan (31) is connected to a first air duct (32); an air filter bag (38) is placed inside the placement box (36); the top of the placement box (36) is fixedly connected to a box cover (37) by bolts; the front side of the placement box (36) is connected to a second exhaust fan (39); the front side of the second exhaust fan (39) is connected to a third air duct (34); the air outlet of the third air duct (34) is connected to an aeration pipe (35).

4. The preheating equipment for the Dacromet coating process of automobile wheel hub bolts according to claim 3 is characterized in that: The air suction hood (3) is arranged on the front side of the drying box (12) and is connected to the installation opening on the front side of the drying box (12); the air outlet of the first air duct (32) passes through the bottom of the preheating box (11) and is connected to the second heating chamber (15).

5. The preheating equipment for the Dacromet coating process of automobile wheel hub bolts according to claim 4 is characterized in that: The air inlet of the second air duct (33) passes through the rear side of the preheating box (11) and is connected to the second heating chamber (15); the air outlet of the second air duct (33) passes through the bottom of the coating box (1) and is connected to the first heating chamber (14); the placement box (36) is arranged on the front side of the coating box (1) and is connected to the first heating chamber (14).

6. The preheating equipment for the Dacromet coating process of automobile wheel hub bolts according to claim 5 is characterized in that: The aeration pipe (35) is arranged at the bottom of the inner wall of the coating box (1), and the air outlet of the third air duct (34) passes through the front side of the coating box (1) and is connected to the aeration pipe (35).

7. The preheating equipment for the Dacromet coating process of automobile wheel hub bolts according to claim 6 is characterized in that: Support legs (13) are evenly arranged at the bottom of the coating box (1), the preheating box (11) and the drying box (12), and two groups of support columns (2) are evenly arranged at the front and rear sides of the slide rail (21), and the bottom of the support column (2) is flush with the bottom of the support leg (13).

8. The preheating equipment for the Dacromet coating process of automobile wheel hub bolts according to claim 7 is characterized in that: The slide rail (21) is located above the coating box (1), the preheating box (11) and the drying box (12), and a hanger (26) is provided at the bottom of the telescopic end of the electric telescopic rod (25).

9. The preheating equipment for the Dacromet coating process of automobile wheel hub bolts according to claim 8, characterized in that: Hooks (28) are evenly hung on the outer wall of the hanger (26), and a hanging basket (27) is arranged at the bottom of the hook (28). The hanging basket (27) is located above the coating box (1) and corresponds to the preheating box (11) and the drying box (12).

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