CN212404327U

CN212404327U - Local oxidation frock of aluminium piston head

Info

Publication number: CN212404327U
Application number: CN202021165955.XU
Authority: CN
Inventors: 董清; 周宗卓; 余其铭; 张立; 李伟
Original assignee: Hubei Hantai Intelligent Equipment Co ltd
Current assignee: Hubei Hantai Intelligent Equipment Co ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-01-26
Anticipated expiration: 2030-06-22

Abstract

The utility model relates to an aluminum piston head partial oxidation frock, including shell, clamp plate, epitheca, mesochite, inferior valve, sealed pad, guide cylinder, spray tube, the angle spacer pin that is used for limiting the piston, big ventilation seal circle and little ventilation seal circle, epitheca, mesochite, inferior valve are linked into an organic whole and the center department of the three forms the oxidation chamber that is used for the partial oxidation of aluminum piston head jointly, still be equipped with feed liquor joint, liquid outlet joint and row's raffinate joint on the shell, sealed pad is settled on the bottom of oxidation chamber and is inlayed on the mesochite inside wall in the ring-shaped, be equipped with sealed pad opening and shutting mechanism corresponding to sealed pad below it, the bottom that sealed pad opening and shutting mechanism is connected with the guide cylinder; the symmetrical parts on the two sides of the lower shell are respectively provided with a spring reset mechanism; the oxidation tool has the advantages of advanced process, accurate positioning, reliable sealing, flexible selection, high efficiency, reliable operation and high automation degree.

Description

Local oxidation frock of aluminium piston head

Technical Field

The utility model belongs to the technical field of anodic oxidation equipment technique and specifically relates to an aluminium piston head partial oxidation frock.

Background

Aluminum is called metal in the 20 th century, and has the greatest advantages of light weight, high mechanical strength, easiness in processing, excellent thermal conductivity and electrical conductivity, no magnetism and the like, so that the aluminum and the aluminum alloy are widely used in the industries of aerospace, daily hardware, instruments and meters, machine manufacturing and the like. An extremely thin oxide film is easily generated on the surface of the aluminum and the aluminum alloy in the atmosphere and has certain corrosion resistance, but the oxide film is amorphous, the film layer is loose and porous, and the corrosion resistance is not strong. In order to improve the corrosion resistance of aluminum parts and increase the wear resistance of parts, aluminum and aluminum alloy products are generally required to be subjected to sulfuric acid anodizing or hard anodizing.

In the automobile and ship industries, most pistons still adopt aluminum alloy materials at present. The piston operates in friction and high temperature environments for long periods of time. In order to improve the performance of pistons, various processes are being used, such as: phosphorization, coating graphite on the surface of a piston friction pair, tinning the surface, embedding a cast iron insert ring on a ring part, adopting a steel piston and the like. In recent years, the anodic oxidation technology is applied to the aluminum piston at home and abroad to carry out the anodic oxidation on the local part of the aluminum piston, for example, the wear resistance and the high temperature resistance of the head part of the piston can be greatly improved by carrying out the local oxidation treatment on a combustion chamber at the top of the piston.

However, the shape of the piston head is complex, and the problem that the piston top combustion chamber is difficult to seal due to local oxidation exists. The traditional scheme adopts the position that the piston does not need the oxidation of artifical parcel, and is inefficient, and the error is big, and the rejection rate is high.

Disclosure of Invention

The utility model aims at the above circumstances, provide an aluminium piston head partial oxidation frock, this oxidation frock technology is advanced, the location is accurate, sealed reliable, select in a flexible way, efficient, the operation is reliable, degree of automation is high simultaneously.

The utility model has the following concrete scheme: a local oxidation tool for the head of an aluminum piston comprises a shell, a pressing plate, an upper shell, a middle shell, a lower shell, a sealing gasket, a guide cylinder, a spray pipe, an angular limit pin for limiting the piston, a large ventilation sealing ring and a small ventilation sealing ring, wherein the upper shell, the middle shell and the lower shell are connected into a whole, the centers of the upper shell, the middle shell and the lower shell form an oxidation cavity for local oxidation of the head of the aluminum piston together, the shell is also provided with a liquid inlet joint, a liquid outlet joint and a residual liquid discharge joint, the sealing gasket is arranged at the bottom of the oxidation cavity and embedded into the inner side wall of the middle shell in an annular manner, a sealing gasket opening and closing mechanism is arranged below the sealing gasket correspondingly, and the; and the symmetrical parts on the two sides of the lower shell are respectively provided with a spring reset mechanism.

Further, in the utility model, sealed pad mechanism that opens and shuts including bilateral symmetry's support bar, all be equipped with articulated seat and ejector pin bolt on every support bar on corresponding the position, the articulated connecting rod that is equipped with on the articulated seat, ejector pin bolt upper end is located the connecting rod under, and the connecting rod upper end articulates there is a L shaped plate, L shaped plate one end has a U-shaped plate through the round pin hub connection, U-shaped plate and inferior valve bottom fixed connection, the other end of L shaped plate insert in the sealed pad inner circle hole that corresponds and be connected with the up end of sealed pad through the connecting plate, control the L shaped plate mutual disposition on both sides.

Further, in the utility model discloses in ejector pin bolt and support bar are through swing joint, are equipped with adjusting nut on the screw thread section on the ejector pin bolt, and this adjusting nut clamps on the support bar up end.

Further, the utility model discloses in spring return mechanism is including reset spring and spring mandrel, and wherein the spring mandrel is fixed on the guide cylinder, the epaxial end of spring mandrel passes inferior valve, reset spring cover are on the spring mandrel, and reset spring's upper end top is on the inferior valve, and reset spring's lower extreme top is in on the up end of guide cylinder.

Furthermore, in the present invention, the housing comprises a housing and a cathode conductive seat, and an O-ring is installed between the cathode conductive seat and the housing.

Further, the utility model discloses in the spray tube comprises spouting box, lock nut, shower nozzle and negative pole current conducting plate, and the negative pole current conducting plate is even as an organic whole with the shower nozzle and settles the inner chamber bottom of shell, lock nut will spout the box and be in the same place with the shower nozzle locking.

Further, the utility model discloses in be equipped with air inlet one and air inlet two above shell and the epitheca respectively, air inlet one is used for aerifing to big ventilation seal circle, and air inlet two is used for aerifing to little ventilation seal circle.

The utility model discloses the technology advances earlier, and piston oxidation position location is accurate, and local oxidation position is sealed reliable, selects in a flexible way, efficient, and a whole set of frock operation is reliable, and degree of automation is high.

Drawings

Fig. 1 is a schematic axial view of the overall structure of the present invention;

FIG. 2 is a schematic view of the main section structure of the present invention;

FIG. 3 is a schematic side sectional view of the present invention;

fig. 4 is another schematic view of the present invention in a cut-away direction;

FIG. 5 is a schematic view of the sectional structure of the middle casing of the present invention;

FIG. 6 is a general schematic view of the sealing gasket opening and closing mechanism of the present invention;

FIG. 7 is a schematic view of the middle sealing gasket opening and closing mechanism of the present invention in the main sectional direction;

FIG. 8 is a schematic side sectional view of the sealing pad opening and closing mechanism of the present invention;

fig. 9 is a schematic top view of the sealing pad opening and closing mechanism of the present invention;

FIG. 10 is a schematic view of a gasket structure according to the present invention;

fig. 11 is a schematic view of the main section structure of the middle nozzle of the present invention.

In the figure: 1-liquid outlet joint, 2-shell, 3-air inlet I, 4-upper shell, 5-air inlet II, 6-angular limit pin, 7-large ventilation sealing ring, 8-pressing plate, 9-aluminum piston, 10-sealing gasket, 11-small ventilation sealing ring, 12-middle shell, 13-lower shell, 14-guide cylinder, 15-raffinate discharging joint, 16-liquid inlet joint, 17-spray pipe, 18-sealing gasket opening and closing mechanism, 19-shell, 20-cathode conducting seat, 21-O-shaped sealing ring, 22-connecting plate, 23-L-shaped plate, 24-U-shaped plate, 25-connecting rod, 26-hinged seat, 27-supporting strip, 28-ejector rod bolt, 29-locking nut, 30-spray box, 31-spray head, 32-cathode conducting plate, 33-reset spring, 34-spring mandrel.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the utility model is used, and are only for convenience of describing the present invention or simplifying the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed or operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-11, the utility model relates to an aluminum piston head partial oxidation frock, including shell 2, clamp plate 8, epitheca 4, mesochite 12, inferior valve 13, sealed pad 10, guide cylinder 14, spray tube 17, angle spacer pin 6 used for limiting the piston, big ventilation seal ring 7 and little ventilation seal ring 11, epitheca, mesochite, inferior valve are connected into an organic whole and the center department of the three forms the oxidation chamber used for the partial oxidation of aluminum piston 9 head jointly, still be equipped with liquid inlet joint 16 on the shell, go out liquid joint 1 and arrange raffinate joint 15, the sealed pad is settled on the bottom of oxidation chamber and is inlayed on the mesochite inside wall circularly, be equipped with sealed pad opening and closing mechanism 18 corresponding to sealed pad below it, the bottom of sealed pad opening and closing mechanism with the guide cylinder is connected; and the symmetrical parts on the two sides of the lower shell are respectively provided with a spring reset mechanism.

Further, in this embodiment the sealed pad mechanism that opens and shuts is equipped with articulated seat 26 and ejector pin bolt 28 including bilateral symmetry's support bar 27 on every support bar all on corresponding the position, and the articulated connecting rod 25 that is equipped with on the articulated seat, ejector pin bolt upper end are located the connecting rod under, and the connecting rod upper end articulates there is a L shaped plate 23, L shaped plate one end has a U-shaped plate 24 through the round pin hub connection, U-shaped plate and inferior valve bottom fixed connection, the other end of L shaped plate insert in the sealed pad inner circle hole that corresponds and be connected with the up end that seals up through connecting plate 22, control the L shaped plate mutual disposition on both sides.

Furthermore, in this embodiment, the ejector pin bolt is movably connected with the support bar in a through manner, and an adjusting nut is mounted on a threaded section of the ejector pin bolt and is clamped on the upper end face of the support bar.

Further, in this embodiment, the spring return mechanism includes a return spring 33 and a spring mandrel 34, wherein the spring mandrel is fixed on the guide cylinder, the upper end of the spring mandrel penetrates through the lower casing, the return spring is sleeved on the spring mandrel, the upper end of the return spring abuts against the lower casing, and the lower end of the return spring abuts against the upper end surface of the guide cylinder.

Further, in this embodiment, the housing is composed of a casing 19 and a cathode conductive seat 20, and an O-ring 21 is installed between the cathode conductive seat and the casing.

Further, the nozzle in this embodiment is composed of a nozzle box 30, a locking nut 29, a nozzle 31 and a cathode conductive plate 32, the cathode conductive plate and the nozzle are connected into a whole and are arranged at the bottom of the inner cavity of the housing, and the locking nut locks the nozzle box and the nozzle together.

Further, in this embodiment, a first air inlet 3 and a second air inlet 5 are respectively disposed on the outer shell and the upper shell, the first air inlet is used for inflating the large-ventilation sealing ring, and the second air inlet is used for inflating the small-ventilation sealing ring.

The utility model discloses a concrete operation process as follows:

the first step is as follows: under the effect of reset spring, sealed pad is originally in the state of opening originally, and manual work or manipulator put into the oxidation chamber in the frock with the aluminium piston and insert the angle spacer pin. The aluminum piston is positioned by one pin on one surface.

The second step is that: the elastic force of the return spring is overcome through external force, so that the aluminum piston, the upper shell, the middle shell and the lower shell move downwards, and the sealing gasket is closed and tightly attached to the aluminum piston under the action of the L-shaped plate, the connecting rod and the hinge seat; above-mentioned in-process, aluminium piston and sealed the pad push down more, the upper end of ejector pin bolt will withstand the connecting rod, impel L shaped plate area sealed pad to extrude to both sides by the centre to make sealed inseparabler laminating aluminium piston of pad.

The third step: compressed air is introduced into the large ventilation sealing ring and the small ventilation sealing ring through the air inlet I and the air inlet II to tightly clamp the aluminum piston, the upper shell, the middle shell and the lower shell, so that a local sealing space is formed and an oxidation area of the aluminum piston is defined.

The fourth step: external electric pump or diaphragm pump activation: and liquid is supplied to the whole tool through the liquid inlet joint, the spray pipe and the liquid outlet joint.

The fifth step: the external oxidation power supply is activated and electricity is passed through the aluminum piston (anode) and the cathode conductive plate, thereby oxidizing the aluminum piston.

And a sixth step: after oxidation, the oxidation liquid is discharged through the residual liquid discharge joint, and the compressed air is discharged through the small ventilation sealing ring and the large ventilation sealing ring.

The seventh step: and under the action of the reset spring, the tool resets, the angular limiting pin is drawn out, and the aluminum piston is taken out, so that the whole local oxidation process is completed.

In the embodiment, the joints of the components are provided with sealing rings to carry out sealing connection of the relevant parts, so as to avoid leakage of the oxidizing liquid, which is also a design consideration.

Claims

1. The utility model provides an aluminium piston head partial oxidation frock, includes shell, clamp plate, epitheca, mesochite, inferior valve, sealed pad, guide cylinder, spray tube, an angle spacer pin, big ventilation seal circle and the little sealing washer of ventilating for restricting the piston, epitheca, mesochite, inferior valve are even integrative and three center department forms the oxidation chamber that is used for aluminium piston head partial oxidation jointly, still are equipped with liquid inlet joint on the shell, go out liquid joint and arrange the raffinate joint, its characterized in that: the sealing gasket is arranged at the bottom of the oxidation cavity and is embedded into the inner side wall of the middle shell in an annular mode, a sealing gasket opening and closing mechanism is arranged below the sealing gasket correspondingly, and the bottom of the sealing gasket opening and closing mechanism is connected with the guide cylinder; and the symmetrical parts on the two sides of the lower shell are respectively provided with a spring reset mechanism.

2. The partial oxidation tool for the head of the aluminum piston as set forth in claim 1, wherein: sealed pad opening and shutting mechanism is equipped with articulated seat and ejector pin bolt including bilateral symmetry's support bar on every support bar all corresponding the position, and the articulated connecting rod that is equipped with on the articulated seat, ejector pin bolt upper end are located the connecting rod under, and the connecting rod upper end articulates there is a L shaped plate, L shaped plate one end has a U-shaped plate through the round pin hub connection, U-shaped plate and inferior valve bottom fixed connection, the other end of L shaped plate insert in the sealed pad inner circle hole that corresponds and be connected with the up end of sealed pad through the connecting plate, control the L shaped plate mutual disposition on both sides.

3. The partial oxidation tool for the head of the aluminum piston as set forth in claim 2, wherein: the ejector rod bolt is in through type movable connection with the supporting bar, and an adjusting nut is arranged on the threaded section of the ejector rod bolt and clamped on the upper end face of the supporting bar.

4. The partial oxidation tool for the head of the aluminum piston as set forth in claim 1, wherein: the spring reset mechanism comprises a reset spring and a spring mandrel, wherein the spring mandrel is fixed on the guide cylinder, the upper end of the spring mandrel penetrates through the lower shell, the reset spring is sleeved on the spring mandrel, the upper end of the reset spring is propped against the lower shell, and the lower end of the reset spring is propped against the upper end face of the guide cylinder.

5. The partial oxidation tool for the head of the aluminum piston as set forth in claim 1, wherein: the shell consists of a shell and a cathode conducting seat, and an O-shaped sealing ring is arranged between the cathode conducting seat and the shell.

6. The partial oxidation tool for the head of the aluminum piston as set forth in claim 1, wherein: the spray pipe is composed of a spray box, a locking nut, a spray head and a cathode conducting plate, the cathode conducting plate and the spray head are connected into a whole and are arranged at the bottom of an inner cavity of the shell, and the spray box and the spray head are locked together by the locking nut.

7. The partial oxidation tool for the head of the aluminum piston as set forth in claim 1, wherein: the shell and the upper shell are respectively provided with a first air inlet and a second air inlet, the first air inlet is used for inflating the large ventilation sealing ring, and the second air inlet is used for inflating the small ventilation sealing ring.