CN210367966U

CN210367966U - Local hard anodizing die for aluminum piston

Info

Publication number: CN210367966U
Application number: CN201921394679.1U
Authority: CN
Inventors: 董清; 周宗卓; 余其铭; 王辉
Original assignee: Hubei Hantai Intelligent Equipment Co ltd
Current assignee: Hubei Hantai Intelligent Equipment Co ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-04-21
Anticipated expiration: 2029-08-27

Abstract

The utility model relates to an aluminum piston local hard anodizing die, which comprises a shell, a gland, an upper shell, a middle shell and a lower shell, wherein the upper shell is connected with the middle shell through screws, an aluminum piston accommodating cavity is arranged at the middle position of the upper shell and the middle shell, a water inlet channel is upwards introduced into the middle of the bottom of the shell, a water outlet channel is outwards arranged on the side wall of an inner cavity of the shell, a cathode plate is also arranged in the inner cavity of the shell, a residual liquid discharging pipe is also arranged at the bottom of the inner cavity of the shell, a sealing gasket embedded into the middle shell is arranged on the side wall of the aluminum piston accommodating cavity, the bottom of the middle shell is connected with a supporting plate, and a piston bottom local sealing block arranged in the aluminum piston; the symmetrical positions of the two sides of the lower shell are respectively provided with a guide sleeve, each guide sleeve is internally provided with a spring, and the upper end of each spring props against the middle shell; the utility model discloses mould simple structure, anodic oxidation treatment effect has very big improvement, has increased substantially production efficiency, has reduced the rejection rate simultaneously.

Description

Local hard anodizing die for aluminum piston

Technical Field

The utility model belongs to the technical field of aluminium piston processing equipment technique and specifically relates to an aluminium piston local stereoplasm anodic oxidation mould.

Background

When an aluminum piston is processed, anodic oxidation treatment is generally carried out on the end part and the side wall of an aluminum piston head, piston anodic oxidation is a piston surface treatment process which is adopted for solving the problem that a high-power diesel engine, particularly a direct injection diesel engine piston with a combustion chamber directly arranged on the top of the piston is easy to crack, particularly, thermal fatigue cracks are easy to generate on the mouth part of a closed basin type combustion chamber, the service life of the piston is prolonged through anodic oxidation, specific hard anodic oxidation treatment needs to be carried out on the local part of the piston end part in the process of process treatment, the hard anodic oxidation treatment of the aluminum alloy mainly aims at improving various performances of the aluminum and the aluminum alloy, including corrosion resistance, wear resistance, weather resistance, insulativity, adsorbability and the like, and hard anodic oxidation electrolysis methods are many, for example: sulfuric acid, oxalic acid, propylene glycol, sulfosalicylic acid and other inorganic salts, organic acids and the like are used as electrolyte, a used power supply can be divided into a direct current power supply, an alternating current power supply and a direct current power supply, a pulse power supply and a pulse power supply which are superposed, and the like.

Disclosure of Invention

The utility model aims at the above situation, and provides an aluminum piston local hard anodizing mold which has relatively small volume, simple structure and low manufacturing cost.

The utility model has the following concrete scheme: an aluminum piston local hard anodizing mold comprises a shell, a gland, an upper shell, a middle shell and a lower shell, wherein the upper shell is connected with the middle shell through screws, the gland is connected with the shell through screws, the middle shell and the lower shell are embedded into the shell and the gland together and are attached to an inner cavity of the shell, the lower shell is in stepped crimping with the inner part of the shell, an aluminum piston accommodating cavity is arranged at the middle position of the upper shell and the middle shell, a water inlet channel is upwards introduced into the middle of the bottom of the shell and communicated to the bottom of the aluminum piston accommodating cavity, a water outlet channel is outwards arranged on the side wall of the inner cavity of the shell, a cathode plate is further arranged in the inner cavity of the shell, a residual liquid discharge pipe is further arranged at the bottom of the inner cavity of the shell, a sealing gasket embedded into the middle shell is arranged on the side wall of the aluminum piston accommodating cavity, a supporting plate is connected with, the water inlet channel penetrates through the partial sealing block at the bottom of the piston and is communicated with the bottom of the corresponding aluminum piston; the symmetrical positions of the two sides of the lower shell are respectively provided with a guide sleeve, each guide sleeve is internally provided with a spring, and the upper end of each spring props against the middle shell.

Further, in the utility model discloses in the top of epitheca still is equipped with symmetrical arrangement's spacing seat, crosses the spacer pin in the spacing seat, inserts in the horizontal hole of aluminium piston and spacing to it when this spacer pin uses.

Further, the utility model discloses in shell inner chamber lateral wall is equipped with sealing washer an with the lateral wall contact site of mesochite, the aluminium piston holds that the juncture that lies in epitheca and mesochite on the cavity wall is equipped with sealing washer b, and sealing washer a and sealing washer b all are connected with the inflation gas source of peripheral hardware through the pipe connection separately.

Furthermore, in the utility model, O-shaped rings are arranged between the upper shell and the middle shell and between the negative plate and the bottom of the inner cavity of the shell.

The utility model discloses a local stereoplasm anodic oxidation mould is through above-mentioned design after, simple structure, anodic oxidation treatment effect have had very big improvement, have increased substantially production efficiency, have reduced the rejection rate simultaneously, and local stereoplasm anodic oxidation is effectual, through local oxidation's going on improving the local performance of aluminium piston greatly.

Drawings

FIG. 1 is a schematic view of the main section structure of the present invention;

FIG. 2 is a schematic side sectional view of the present invention;

fig. 3 is a schematic view of the top view structure of the present invention.

In the figure: the device comprises a cathode plate 1, a shell 2, a lower shell 3, a sealing ring a, a gland 5, a middle shell 6, an upper shell 7, a sealing ring b8, an aluminum piston 9, a sealing gasket 10, an O-shaped ring 11, a water inlet channel 12, a gas pipe joint 13, a limiting pin 14, a piston bottom local sealing block 15, a supporting plate 16, a spring 17, a guide sleeve 18, a residual liquid discharge pipe 19, a water outlet channel 20 and a limiting seat 21.

Detailed Description

Referring to fig. 1-3, the utility model relates to an aluminum piston local hard anodizing mold, which comprises a shell 2, a gland 5, an upper shell 7, a middle shell 6 and a lower shell 3, wherein the upper shell is connected with the middle shell through screws, the gland is connected with the shell screws, the middle shell and the lower shell are embedded into the shell and the gland together and are attached to the inner cavity of the shell, the lower shell is in stepped crimping with the inner part of the shell, an aluminum piston accommodating cavity is arranged at the middle position of the upper shell and the middle shell, a water inlet channel 12 is upwards introduced into the middle of the bottom of the shell and is communicated to the bottom of the aluminum piston accommodating cavity, a water outlet channel 20 is outwards arranged on the side wall of the inner cavity of the shell, a cathode plate 1 is also arranged in the inner cavity of the shell, a residual liquid discharge pipe 19 is also arranged at the bottom of the inner cavity of the shell, a sealing gasket 10 embedded into the, a piston bottom local sealing block 15 arranged in the aluminum piston accommodating cavity is fixed on the supporting plate, and the water inlet channel passes through the piston bottom local sealing block and is communicated with the bottom of the corresponding aluminum piston; the symmetrical positions of the two sides of the lower shell are respectively provided with a guide sleeve 18, each guide sleeve is internally provided with a spring 17, and the upper end of each spring props against the middle shell.

Furthermore, the top of the upper shell in this embodiment is further provided with symmetrically arranged limiting seats 21, and a limiting pin 14 passes through the limiting seats, and is inserted into the transverse hole of the aluminum piston and limits the aluminum piston when in use.

Furthermore, in this embodiment, a sealing ring a4 is installed at a contact position between the side wall of the inner cavity of the outer shell and the outer side wall of the middle shell, a sealing ring b8 is installed at a junction between the upper shell and the middle shell on the wall of the accommodating cavity of the aluminum piston, and the sealing ring a and the sealing ring b are respectively connected with an external inflation gas source through a gas pipe joint 13.

Furthermore, in this embodiment, the O-rings 11 are respectively installed between the upper casing and the middle casing and between the cathode plate and the bottom of the inner cavity of the outer casing.

When the oxidation mold is used, an aluminum piston 9 workpiece is firstly placed into the mold, the force is applied to the top of the aluminum piston through an external pressing device, the pressing device is generally a force application tool such as an air cylinder or an oil cylinder for applying force and pressing, and thus, a sealing gasket can be attached to the head of the aluminum piston; meanwhile, the middle shell moves downwards and compresses the spring, and the sealing gasket and the local sealing block at the bottom of the piston are tightly attached to the head of the aluminum piston to form local sealing by a lever principle; and then injecting electrolyte into the reactor and switching on current to carry out treatment processes related to electrolytic oxidation.

Some small parts related to the mold in this embodiment are not described in more detail, and may be adjusted appropriately according to the prior art, but do not depart from the essential principle of this patent, and therefore still belong to the protection scope of the present invention.

The utility model discloses a mould cooperates relevant stereoplasm anodic oxidation system equipment to carry out work, is the place that aluminium piston takes place stereoplasm anodic oxidation, the utility model discloses the mould is after above-mentioned design, simple structure, and anodic oxidation treatment has had very big improvement, has increased substantially production efficiency, has reduced the rejection rate simultaneously, and local stereoplasm anodic oxidation is effectual, through local oxidation's going on improving aluminium piston's partial performance greatly.

Claims

1. The utility model provides an aluminium piston local stereoplasm anodic oxidation mould, includes shell, gland, epitheca, mesochite, inferior valve, and wherein the epitheca is connected through the screw with the mesochite, gland and shell screw connection, among mesochite and the inferior valve imbed shell and gland together and with the inner chamber laminating of shell, inferior valve and the inside ladder crimping of shell, the intermediate position of epitheca and mesochite is equipped with the aluminium piston and holds the chamber, upwards let in the middle of the bottom of shell and be equipped with water inlet passageway, water inlet passageway communicates to the bottom that the aluminium piston held the chamber, outwards is equipped with water outlet channel on the inner chamber lateral wall of shell, still is equipped with the negative plate in the inner chamber of shell, and the inner chamber bottom of shell still is equipped with raffinate: the side wall of the aluminum piston accommodating cavity is provided with a sealing gasket embedded in the middle shell, the bottom of the middle shell is connected with a supporting plate, a piston bottom local sealing block arranged in the aluminum piston accommodating cavity is fixed on the supporting plate, and the water inlet channel penetrates through the piston bottom local sealing block to be communicated with the bottom of the corresponding aluminum piston; the symmetrical positions of the two sides of the lower shell are respectively provided with a guide sleeve, each guide sleeve is internally provided with a spring, and the upper end of each spring props against the middle shell.

2. The local hard anodizing mold for the aluminum piston as recited in claim 1, wherein: the top of the upper shell is also provided with symmetrically arranged limiting seats, limiting pins transversely penetrate through the limiting seats, and the limiting pins are inserted into transverse holes of the aluminum piston and limit the aluminum piston when in use.

3. The local hard anodizing mold for the aluminum piston as recited in claim 1, wherein: and a sealing ring a is arranged at the contact part of the side wall of the inner cavity of the shell and the outer side wall of the middle shell, a sealing ring b is arranged at the junction of the upper shell and the middle shell on the wall of the containing cavity of the aluminum piston, and the sealing ring a and the sealing ring b are respectively connected with an external inflation gas source through a gas pipe joint.

4. The local hard anodizing mold for the aluminum piston as recited in claim 1, wherein: o-shaped rings are arranged between the upper shell and the middle shell and between the cathode plate and the bottom of the inner cavity of the shell.