Chemical deburring device and method for automobile parts

Abstract

The invention discloses a chemical deburring device and method for automobile parts, and belongs to the technical field of metal surface treatment. The device comprises a box body, the interior of the box body is divided into a chemical deburring tank, a neutralizing tank and a cleaning tank, nitric acid-hydrofluoric acid etching liquid is arranged in the chemical deburring tank, and the chemical deburring tank is integrated with an electric heating rod and an ultrasonic generator and used for accelerating deburring reaction; the neutralizing tank is filled with an alkaline solution, and the cleaning tank is provided with a spraying pipe. An automatic accessory moving mechanism is arranged at the top of the box body, the goods baskets are controlled to be transferred among the grooves through lead screw transmission and electric telescopic rods, and continuous operation is achieved. The invention further provides a corresponding deburring method which comprises the steps of etching, neutralizing, cleaning and drying, and intermittent ultrasonic vibration (25-40 kHz) and a real-time concentration adjusting technology are adopted, so that the treatment uniformity is ensured. The control system realizes full-process automation through a temperature control module and a pH monitoring and motion control module. The device has the advantages of high efficiency, thorough deburring, simplicity and convenience in operation and the like.

Description

Technical Field

[0001] The present invention relates to the field of mechanical technology, and particularly to a chemical deburring device and method for automotive parts. Background Art

[0002] Automotive metal parts are prone to burrs during machining. Traditional mechanical deburring has problems such as low efficiency and damage to the substrate. Chemical deburring dissolves burrs through etching solution, but the existing technology has the following defects:

[0003] 1. The temperature and concentration of the etching solution are not accurately controlled, resulting in unstable reaction rates;

[0004] 2. The neutralization and cleaning processes are separated, and the process is cumbersome;

[0005] 3. Lack of an automated transfer and real-time monitoring system.

[0006] Therefore, how to provide a chemical deburring device and method for automotive parts to solve the problems existing in the prior art is of great significance for its application. Summary of the Invention

[0007] In view of this, the purpose of this application is to provide a chemical deburring device and method for automotive parts to solve the problems of unstable reaction rates and cumbersome processes.

[0008] To achieve the above purpose, the present invention provides the following technical solutions:

[0009] A chemical deburring device for automotive parts, including a box body, the interior of which is divided into a chemical deburring tank, a neutralization tank, and a cleaning tank from left to right;

[0010] The interior of the chemical deburring tank is provided with a chemical etching solution, and the chemical etching solution is a mixed solution containing nitric acid, hydrofluoric acid, and an inhibitor;

[0011] The neutralization tank is used for neutralizing the parts after deburring;

[0012] The bottom of the box body is integrated with an electric heating rod, and the electric heating rod is used to control the temperature of the etching solution within the range of 30°C - 50°C;

[0013] The interior of the box body is also provided with an ultrasonic generator and an adjustment pump. The ultrasonic generator is used to accelerate the deburring reaction through ultrasonic vibration, and the adjustment pump is used to adjust the concentration of the chemical etching solution inside the box body;

[0014] The interior of the cleaning tank is provided with a spray pipe, and the spray pipe is used for surface cleaning of the parts;

[0015] A fitting moving mechanism is installed at the top of the box body, and the fitting moving mechanism is used to drive the fitting to be transferred between the chemical deburring tank, the neutralization tank and the cleaning tank.

[0016] Preferably, the neutralization tank is filled with an alkaline neutralizing solution, and the neutralizing solution is a sodium hydroxide solution with a mass concentration of 5% - 10%.

[0017] Preferably, the components of the chemical etching solution are: 10% - 15% nitric acid, 3% - 8% hydrofluoric acid, 0.5% - 1.5% corrosion inhibitor, and the balance is deionized water. The corrosion inhibitor is benzotriazole or its derivative.

[0018] Preferably, a hot air drying device is arranged on one side of the top of the box body close to the cleaning tank, and the hot air drying device is used to dry the fitting.

[0019] Preferably, the fitting moving mechanism includes a left side plate and a right side plate. The left side plate and the right side plate are respectively fixedly connected to both sides of the top of the box body. A cross plate is fixedly connected between the right side plate and the left side plate. A sliding block is slidably connected to the top of the cross plate. A connecting plate is fixedly connected to the bottom end of the sliding block, and a support plate is fixedly connected to the bottom end of the connecting plate.

[0020] Preferably, an electric telescopic rod is fixedly connected to the top end of the support plate, and a basket is fixedly connected to the telescopic end of the electric telescopic rod. The basket is used to hold automotive fittings.

[0021] Preferably, a lead screw is rotatably connected between the top ends of the left side plate and the right side plate. The lead screw is threadedly connected to the sliding block. A motor is installed on one side of the top end of the right side plate, and the output end of the motor is in transmission connection with the lead screw.

[0022] A method for chemical deburring of automotive fittings includes the following steps:

[0023] S1: Place the metal fitting in the basket.

[0024] S2: Transfer the fitting to the chemical deburring tank through the fitting moving mechanism, immerse it in the chemical etching solution, turn on the ultrasonic generator motor and control the temperature at 35°C - 45°C, and the treatment time is 5 - 20 minutes.

[0025] S3: Real-time monitor the concentration of the etching solution through a pH sensor, and use an adjustment pump to adjust the concentration of the etching solution in real time to ensure a uniform reaction rate.

[0026] S4: Send the deburred fitting into the neutralization tank, soak it in the alkaline solution for neutralization treatment, and then transfer it to the cleaning tank and rinse it with a spray pipe.

[0027] S5: The rinsed fittings are lifted by the fitting moving mechanism, and the hot air drying device is used to dry the fittings, completing the deburring process.

[0028] Preferably, in step S2, the ultrasonic frequency is 25–40 kHz, and an intermittent vibration mode is adopted, with a working cycle of vibrating for 10 seconds / stopping for 5 seconds.

[0029] A control system, which is used to control the operation of each electrical device in claims 1-9.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0031] 1. The multi-tank integrated design reduces the fitting transfer time, and the efficiency is increased by 30%;

[0032] 2. The synergistic effect of ultrasonic and temperature control makes the uniformity of burr removal reach more than 95%;

[0033] 3. The automatic control system reduces manual intervention, and the qualified rate is increased to 98%.

[0034] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, so as to be implemented in accordance with the content of the specification, and in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the following describes the preferred embodiments of the present application in detail in conjunction with the drawings as follows.

[0035] According to the following detailed description of the specific embodiments of the present application in conjunction with the drawings, those skilled in the art will understand the above and other purposes, advantages and features of the present application more clearly. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. In all the drawings, similar elements or parts are generally marked with similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0037] Figure 1 It is a schematic structural diagram of the device of the present invention;

[0038] Figure 2 It is a side view of the structural structure of the device of the present invention;

[0039] Figure 3 It is a flowchart of the method of the present invention.

[0040] In the figure: 1. Box body; 2. Chemical deburring tank; 3. Neutralization tank; 4. Spray pipe; 5. Cleaning tank; 6. Right side plate; 7. Motor; 8. Basket; 9. Left side plate; 10. Cross plate; 11. Connecting plate; 12. Lead screw; 13. Sliding block; 14. Electric telescopic rod; 15. Support plate; 16. Electric heating rod; 17. Ultrasonic generator; 18. PH sensor; 19. Hot air drying device; 20. Adjusting pump. Detailed implementation manner

[0041] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. In the following description, specific details such as specific configurations and components are provided only to assist in a comprehensive understanding of the embodiments of the present application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of known functions and structures are omitted in the embodiments for clarity and conciseness.

[0042] In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or arrangements discussed.

[0043] The term "and / or" in this article is merely a description of the associated relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article describes another associated object relationship, indicating that two relationships may exist. For example, A / and B may represent: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0044] It should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion.

[0045] Please refer to Figures 1-3 , the present invention provides a technical solution for a chemical deburring device and method for automotive parts:

[0046] Embodiment 1: Device structure

[0047] An automotive parts chemical deburring device, including a box body 1, the interior of the box body 1 is divided into a chemical deburring tank 2, a neutralization tank 3 and a cleaning tank 5 from left to right;

[0048] Inside the chemical deburring tank 2, there is a container for holding a chemical etching solution, and the chemical etching solution contains a mixture of nitric acid, hydrofluoric acid and an inhibitor;

[0049] The neutralization tank 3 is used for neutralizing the deburred parts;

[0050] At the bottom of the box body 1, there is an integrated electric heating rod 16, and the electric heating rod 16 is used to control the temperature of the etching solution within the range of 30°C - 50°C;

[0051] Inside the box body 1, there is also an ultrasonic generator 17 and an adjustment pump 20. The ultrasonic generator 17 is used to accelerate the deburring reaction through ultrasonic vibration, and the adjustment pump 20 is used to adjust the concentration of the chemical etching solution inside the box body 1;

[0052] Inside the cleaning tank 5, there is a spray pipe 4, and the spray pipe 4 is used for surface cleaning of the parts;

[0053] At the top of the box body 1, there is a parts moving mechanism, and the parts moving mechanism is used to drive the parts to be transferred between the chemical deburring tank 2, the neutralization tank 3 and the cleaning tank 5.

[0054] The neutralization tank 3 is filled with an alkaline neutralizing solution, and the neutralizing solution is a sodium hydroxide solution with a mass concentration of 5% - 10%.

[0055] The components of the chemical etching solution are: 10% - 15% nitric acid, 3% - 8% hydrofluoric acid, 0.5% - 1.5% inhibitor, and the balance is deionized water. The inhibitor is benzotriazole or its derivatives.

[0056] On one side of the top of the box body 1 near the cleaning tank 5, there is a hot air drying device 19, and the hot air drying device 19 is used for drying the parts.

[0057] The parts moving mechanism includes a left side plate 9 and a right side plate 6. The left side plate 9 and the right side plate 6 are respectively fixedly connected to both sides of the top of the box body 1. Between the right side plate 6 and the left side plate 9, there is a fixedly connected cross plate 10. On the top of the cross plate 10, there is a sliding block 13 slidingly connected. At the bottom of the sliding block 13, there is a fixedly connected connecting plate 11. At the bottom of the connecting plate 11, there is a fixedly connected support plate 15.

[0058] At the top of the support plate 15, there is a fixedly connected electric telescopic rod 14, and at the telescopic end of the electric telescopic rod 14, there is a basket 8, and the basket 8 is used for holding automotive parts.

[0059] A lead screw 12 is rotatably connected between the tops of the left side plate 9 and the right side plate 6. The lead screw 12 is threadedly connected to a sliding block 13. On one side of the top of the right side plate 6, a motor 7 is installed, and the output end of the motor 7 is drivingly connected to the lead screw 12.

[0060] In this embodiment, for the box body 1, its interior is partitioned into a chemical deburring tank 2, a neutralization tank 3, and a cleaning tank 5. The deburring tank 2 contains a nitric acid-hydrofluoric acid mixed etching solution (12% nitric acid, 5% hydrofluoric acid, 1% benzotriazole, and the balance deionized water). An electric heating rod 16 is integrated at the bottom of the tank, and the temperature control module is used to maintain the solution at 40°C ± 2°C. The neutralization tank 3 is filled with an 8% sodium hydroxide solution, and the cleaning tank 5 is provided with a spray pipe 4 and a deionized water circulation system;

[0061] At the top of the box body 1, a fitting moving mechanism is provided, which includes a sliding block 13 driven by a lead screw 12, an electric telescopic rod 14, and a basket 8. The lead screw 12 is driven by a motor 7 to achieve the horizontal movement of the basket 8; the electric telescopic rod 14 controls the vertical lifting of the basket 8.

[0062] Example 2: Deburring method

[0063] A chemical deburring method for automobile fittings includes the following steps:

[0064] S1: Place the metal fitting in the basket 8;

[0065] S2: Transfer the fitting to the chemical deburring tank 2 through the fitting moving mechanism, immerse it in the chemical etching solution, turn on the ultrasonic generator motor 7 and control the temperature at 35°C–45°C, and the treatment time is 5–20 minutes;

[0066] S3: Real-time monitor the concentration of the etching solution through the pH sensor 22, and use the regulating pump 20 to adjust the concentration of the etching solution in real time to ensure a uniform reaction rate;

[0067] S4: Send the deburred fitting into the neutralization tank 3, soak it in the alkaline solution for neutralization treatment, and then transfer it to the cleaning tank 5 and rinse it with the spray pipe 4;

[0068] S5: Lift the rinsed fitting through the fitting moving mechanism, and use the hot air drying device 19 to dry the fitting to complete the deburring process.

[0069] In step S2, the ultrasonic frequency is 25–40 kHz, and an intermittent vibration mode is adopted, with a working cycle of vibrating for 10 seconds / stopping for 5 seconds.

[0070] Control system, which is used to control the operation of each electrical equipment.

[0071] In this embodiment:

[0072] Etching stage: Place the fittings in the basket 8, move it to the deburring tank 2, immerse it in the etching solution and then start the ultrasonic wave (frequency 30 kHz, working mode: vibrating for 10 seconds / stopping for 5 seconds), and process for 15 minutes;

[0073] Neutralization stage: Transfer it to the neutralization tank 3 and soak for 3 minutes;

[0074] After spray rinsing, dry it with the hot air drying device 19 (80 °C).

[0075] The above are only the preferred embodiments of the present invention, and it does not thereby limit the protection scope of the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any changes, modifications, substitutions, integrations and parameter changes made to these embodiments by means of conventional substitutions or capable of achieving the same functions without departing from the principle and spirit of the present invention fall within the protection scope of the present invention.

Claims

1. A chemical deburring device for automotive parts, characterized in that: The invention comprises a box body (1), wherein the interior of the box body (1) is divided from left to right into a chemical deburring tank (2), a neutralization tank (3) and a cleaning tank (5); The interior of the chemical deburring tank (2) is provided with a liquid for containing a chemical etching solution, wherein the chemical etching solution comprises a mixture of nitric acid, hydrofluoric acid and a corrosion inhibitor; The neutralization tank (3) is used to neutralize the deburred accessories; The bottom of the box (1) is integrated with an electric heating rod (16), and the electric heating rod (16) is used to control the temperature of the etching solution within the range of 30°C-50°C; An ultrasonic generator (17) and a regulating pump (20) are also provided inside the box (1), wherein the ultrasonic generator (17) is used to accelerate the deburring reaction through ultrasonic vibration, and the regulating pump (20) is used to adjust the concentration of the chemical etching solution inside the box (1); A spray pipe (4) is provided inside the cleaning tank (5), and the spray pipe (4) is used to clean the surface of the accessories; An accessory moving mechanism is installed on the top of the box (1), and the accessory moving mechanism is used to drive the accessories to be transferred between the chemical deburring tank (2), the neutralization tank (3) and the cleaning tank (5).

2. The chemical deburring device for automotive parts according to claim 1, wherein: The neutralization tank (3) is filled with an alkaline neutralization solution, which is a sodium hydroxide solution with a mass concentration of 5%-10%.

3. The chemical deburring device for automotive parts according to claim 1, characterized in that: The chemical etching solution comprises the following components: 10%-15% nitric acid, 3%-8% hydrofluoric acid, 0.5%-1.5% corrosion inhibitor, and the balance is deionized water. The corrosion inhibitor is benzotriazole or a derivative thereof.

4. A chemical deburring device for automotive parts according to claim 1, characterized in that: A hot air drying device (19) is provided on one side of the top of the box body (1) close to the cleaning tank (5), and the hot air drying device (19) is used to dry the accessories.

5. The chemical deburring device for automotive parts according to claim 1, characterized in that: The accessory moving mechanism comprises a left side plate (9) and a right side plate (6), the left side plate (9) and the right side plate (6) are respectively fixedly connected to the two sides of the top of the box body (1), a transverse plate (10) is fixedly connected between the right side plate (6) and the left side plate (9), the top end of the transverse plate (10) is slidably connected to a sliding block (13), the bottom end of the sliding block (13) is fixedly connected to a connecting plate (11), and the bottom end of the connecting plate (11) is fixedly connected to a supporting plate (15).

6. The chemical deburring device for automotive parts according to claim 1, wherein: The top end of the support plate (15) is fixedly connected to an electric telescopic rod (14), and the telescopic end of the electric telescopic rod (14) is fixedly connected to a cargo basket (8), and the cargo basket (8) is used to accommodate automobile accessories.

7. The chemical deburring device for automotive parts according to claim 1, characterized in that: A screw rod (12) is rotatably connected between the top ends of the left side plate (9) and the right side plate (6), and the screw rod (12) is threadedly connected to the sliding block (13). A motor (7) is installed on one side of the top end of the right side plate (6), and the output end of the motor (7) is transmission-connected to the screw rod (12).

8. A chemical deburring method for automotive parts based on the device according to any one of claims 1-7, characterized in that: The following steps are involved: S1: placing metal accessories in the basket (8); S2: The accessory is transferred to the chemical deburring tank (2) by the accessory moving mechanism, immersed in the chemical etching solution, the ultrasonic generator motor (7) is turned on and the temperature is controlled at 35°C-45°C, and the processing time is 5-20 minutes; S3: Monitor the concentration of the etching solution in real time through the pH sensor (22), and use the regulating pump (20) to adjust the concentration of the etching solution in real time to ensure a uniform reaction rate; S4: Feed the deburred fittings into the neutralization tank (3), soak them in the alkaline solution for neutralization treatment, and then transfer them to the cleaning tank (5) and rinse them with the spray pipe (4); S5: Lift the rinsed fittings through the fitting moving mechanism, and use the hot air drying device (19) to dry the fittings to complete the deburring process.

9. The method according to claim 8, wherein: In step S2, the ultrasonic frequency is 25–40 kHz, and an intermittent vibration mode is adopted, with a working cycle of vibrating for 10 seconds / stopping for 5 seconds.

10. A control system, characterized in that: The control system is used to control the operation of each electrical device in claims 1-9.

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