Piston Anodizing Tooling

Abstract

The piston anodic oxidation tooling relates to the technical field of piston oxidation, especially an oxidation tooling and its oxidation process for the special-shaped surface and combustion chamber of the piston. The piston clamping and fixing device comprises a base body, on which a base is installed. The base is provided with a main liquid passage hole; a sealing body is installed on the base. The sealing body includes a covering part and an open part. The working surface of the covering part corresponds to the non-oxidized surface of the piston. The open part is a structure that penetrates up and down, and the opening contour corresponds to the oxidized surface of the piston contour; a bracket is also provided on the base body, and a clamping mechanism is installed on the bracket. The end of the clamping structure is connected to a pressing block, and the position of the pressing block is above the sealing body; the electrolytic cell is provided with a liquid spraying pipe, and the position of the liquid spraying pipe corresponds to the main liquid passage hole; the piston clamping and fixing device is connected to an automatic conveying device. The piston anodic oxidation tooling is connected to the automatic conveying device, with simple operation and improved work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of piston oxidation, and in particular belongs to an oxidation tooling for piston special-shaped surfaces and combustion chambers and its oxidation process. Background Art

[0002] With the continuous increase in the output power of diesel engines, the thermal stress and mechanical stress borne by the piston also increase accordingly, resulting in cracking and ablation on the top surface of the piston and the peripheral wall of the combustion chamber. In the prior art, piston anodic oxidation is mostly used to solve this problem. In essence, an oxide film is formed on the surface of the piston. This oxide film has excellent heat insulation properties, forming a thermal barrier at the easily cracked parts and slowing down the intrusion of heat flow. Therefore, after hard anodic oxidation of the piston top, its thermal fatigue strength can be effectively improved, enabling the special-shaped top surface and combustion chamber of the piston to withstand instantaneous high temperatures and playing an adiabatic role, with good heat resistance, insulation and corrosion resistance.

[0003] When oxidizing the special-shaped top surface and combustion chamber part of the piston, there are many problems such as cumbersome oxidation process, uneven oxidation boundary of the piston, and poor appearance quality. Summary of the Invention

[0004] The purpose of the present invention is to provide a piston anodic oxidation tooling to achieve complete sealing of the oxidation part, clear boundary, and simple operation.

[0005] The piston anodic oxidation tooling provided by the present invention is characterized in that it includes a piston clamping and fixing device and an electrolytic cell. The piston clamping and fixing device includes a base body, on which a base is installed. The base is provided with a main liquid passage hole; a sealing body is installed on the base. The sealing body includes a covering part and an open part. The working surface of the covering part corresponds to the non-oxidation surface of the piston. The open part is a vertically through structure, and the opening contour corresponds to the oxidation surface contour of the piston;; a bracket is also provided on the base body, and a clamping mechanism is installed on the bracket. The end of the clamping structure is connected to a pressing block, and the position of the pressing block is above the sealing body; the electrolytic cell is provided with a liquid spraying pipe, and the position of the liquid spraying pipe corresponds to the sealing body; the piston clamping and fixing device is connected to an automated conveying device.

[0006] Further, the clamping mechanism is a cylinder or a manual quick clamp.

[0007] Further, the sealing body is provided with reinforcing ribs, and the reinforcing ribs are provided with secondary liquid passage holes. The material of the sealing body is silica gel.

[0008] When the piston anodic oxidation tooling and its oxidation process provided by the present invention are used, the sealing body cooperates with the special-shaped top surface and combustion chamber of the piston, and has the following positive effects:

[0009] 1. The sealing body cooperates with the piston and the base to be pressed tightly, effectively covering the non-oxidation part. The electrolyte enters the non-oxidation part, the oxidation boundary of the piston is neat, and the appearance quality is good;

[0010] 2. The piston anodic oxidation tooling is connected to an automated conveying device, which is easy to operate and improves work efficiency. Description of the Drawings

[0011] The drawings partially disclose specific embodiments of the present invention, wherein,

[0012] Figure 1 is a schematic structural diagram of the sealing body of the present invention;

[0013] Figure 2 is a schematic structural diagram of the cooperation between the sealing body and the piston of the present invention;

[0014] Figure 3 is a schematic working diagram of the present invention. Detailed Embodiments

[0015] The piston anodic oxidation tooling disclosed by the present invention includes a piston clamping and fixing device and an electrolytic cell 9. The piston clamping and fixing device includes a base body 6. A base 7 is installed on the base body with screws, and the base installs a sealing body 8 in an inlaid manner; the base is provided with a main liquid passage hole 12; the sealing body includes a covering portion 11 and an open portion. The working surface of the covering portion corresponds to the non-oxidation surface of the piston. The open portion is a vertically through structure, and the opening contour corresponds to the oxidation surface contour of the piston. The open portion of the sealing body is further provided with an arc-shaped reinforcing rib 15, and auxiliary liquid passage holes 13 are evenly distributed on the reinforcing rib. The material of the sealing body is silica gel; a support 2 is further connected to the base body, a clamping mechanism 1 is installed on the support, and the end of the clamping structure is connected to a pressing block 4 with bolts. The position of the pressing block is above the sealing body; the electrolytic cell is provided with a liquid spraying pipe 10, and the position of the liquid spraying pipe corresponds to the sealing body; the piston clamping and fixing device is connected to an automated conveying device.

[0016] Obviously, the clamping mechanism can be a cylinder or a manual quick clamp. The automated conveying device is a prior art, and its installation and connection are easy for those skilled in the art to think of and implement, so no further description is made.

[0017] During specific use, place the piston on the sealing body, the end surface of the piston cooperates with the end surface of the sealing body, the clamping mechanism on the support acts, drives the pressing block to press above the piston, and fixes the piston. The automated conveying device acts to place the piston clamping and fixing device at a set position in the electrolytic cell. At this time, the oxidation surface of the piston is lower than the liquid level of the electrolyte, and the liquid spraying pipe is at the position of the main liquid passage hole. The liquid spraying pipe sprays the electrolyte onto the oxidation surface of the piston, powers on and performs anodic oxidation treatment; after the oxidation is completed, the liquid spraying pipe stops spraying the electrolyte, and the automated conveying device moves the piston clamping and fixing device out of the electrolytic cell; the clamping mechanism acts, the pressing block loosens, and the piston is taken out.

Claims

1. A piston anodizing tooling, characterized in that, It includes a piston clamping and fixing device and an electrolytic cell (9). The piston clamping and fixing device includes a base body (6), on which a base (7) is installed. The base is provided with a main liquid passage hole (12); a sealing body (8) is installed on the base. The sealing body includes a covering part (11) and an open part. The working surface of the covering part corresponds to the non-oxidized surface of the piston. The open part is a vertically penetrating structure, and the opening contour corresponds to the oxidized surface of the piston contour; a bracket (2) is also provided on the base body, and a clamping mechanism (1) is installed on the bracket. The end of the clamping structure is connected to a pressure block (4), and the position of the pressure block is above the sealing body; the electrolytic cell is provided with a liquid spraying pipe (10), and the position of the liquid spraying pipe corresponds to the main liquid passage hole; the piston clamping and fixing device is connected to an automatic conveying device.

2. The piston anodizing tooling according to claim 1, further characterized in that The clamping mechanism is a cylinder or a manual quick clamp.

3. The piston anodic oxidation tooling according to claim 1, further characterized in that, The open part of the sealing body is provided with arc-shaped reinforcing ribs (15). The reinforcing ribs are evenly distributed with auxiliary liquid passage holes (13), and the material of the sealing body is silica gel.

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