CN1318149C

CN1318149C - Direction adjustable electric arc inner bore spraying gun

Info

Publication number: CN1318149C
Application number: CNB2004100436479A
Authority: CN
Inventors: 郭面焕
Original assignee: Harbin Institute of Technology
Current assignee: Harbin Institute of Technology
Priority date: 2004-06-23
Filing date: 2004-06-23
Publication date: 2007-05-30
Anticipated expiration: 2024-06-23
Also published as: CN1593783A

Abstract

The present invention belongs to a hot spraying technique in the field of surface engineering, and particularly to discloses an arc spray gun with inner holes. The arc spray gun with inner holes comprises a gun head (1), a gun neck (3) and a gun handle (2) in sequential connection. A compressed air pipe (4) and a wire guide pipe (5) penetrate through the gun handle (2) with a hollow structure and the gun neck (3). The wire guide pipe (5) is a flexible pipe, and copper screen lines are coated on the outer surface of the wire guide pipe (5). The front ends of the compressed air pipe (4) and the wire guide pipe (5) are connected with the gun head (1). The gun neck (3) is a flexible pipe which can be bent and straight. As the gun neck (3) can be bent, the gun head (1) can be optionally adjusted within the range of 0 to 90 degrees according to the requirement for the arc spraying directions, and is suitable to spray in various positions and different directions, which satisfy the requirement of the coating layer preparation. The structure of the gun head adopts the advantage of the arc spray gun with a straight head, and can well guarantee the atomization of molten metal in the spraying process, and thus, the optimum effect of the preparation of inner spraying coating layers is realized. The arc spray gun with inner holes has the advantages of reasonable design, reliable work and easy popularization and implementation.

Description

The electric arc endoporus paint spray gun of adjustable direction

Technical field:

The invention belongs to the plasma spray technology in the Surface Engineering category, be specifically related to a kind of endoporus arc pistol.

Background technology:

Thermal spraying is a significant surfaces modification technology in the Surface Engineering, plasma spray technology is by thermals source such as flame, electric arc, plasma, light, certain wire or dusty material are heated to fusing or semi-molten state, and acceleration sprays to matrix surface formation coating, be applicable to the modification on new product structural member surface, and the reparation of waste product, be widely used in nearly all industrial circles such as space flight, aviation, metallurgy, machinery, papermaking, petrochemical industry.The arc spraying is one of them in the plasma spray technology, and the equipment that is characterized in is simple, and production cost is low, operation at the scene, and operation is convenient, grasps applied range easily.But when the spraying that is used for bore area, because the structural reason of endoporus spray gun own, stretching into the rifle head of the spray gun in the hole can not operate perpendicular to the endoporus hole wall surface, therefore the direction of electric arc and gas atomization can not be perpendicular to the endoporus hole wall surface, make the coating voidage height of preparation, bond strength is low, can not reach the optimum efficiency of electric arc spraying.

Summary of the invention:

Can not be for the shower nozzle that solves existing endoporus spray gun perpendicular to the problem of endoporus hole wall operation, provide a kind of shower nozzle can be perpendicular to the spray gun of endoporus hole wall work.Technical scheme of the present invention is as follows: a kind of electric arc endoporus paint spray gun of adjustable direction, it comprises rifle head 1, rifle neck 3 and the pikestaff 2 that is linked in sequence, be penetrated with compressed air hose 4 and wire leading pipe 5 in the pikestaff 2 of hollow-core construction and the rifle neck 3, wire leading pipe 5 is flexible pipes that outer surface coats the copper mesh line, the front end of compressed air hose 4 and wire leading pipe 5 is connected with rifle head 1, and rifle neck 3 is can be crooked and pull straight flexible metal conduit.Rifle head 1 is made up of pair of conductive mouth 1-1, compressed air cover 1-2, rifle head setscrew nut 1-3, rifle head keeper 1-4 and compressed air mouth 1-5, the angle that two ignition tip 1-1 are mutually for greater than 60 °, smaller or equal to 70 ° and point to the perforate 1-2-1 of compressed air cover 1-2, the rear end of ignition tip 1-1 connects wire leading pipe 5, compressed air cover 1-2 is connected the end of rifle head setscrew nut 1-3, rifle head keeper 1-4 is arranged in the inner chamber of rifle head setscrew nut 1-3 and wire leading pipe 5 and compressed air mouth 1-5 is fixed, and compressed air mouth 1-5 is connected with compressed air hose 4; It comprises that also the described dirt device of discharging fume certainly is made up of collection flue dust cover 7 and negative pressure pipe 8 from discharging fume the dirt device, and collection flue dust cover 7 is arranged on the front portion of rifle head 1, the intracavity inter-connection of negative pressure pipe 8 and smoke evacuation dust hood 7; It also comprises extension bar 10, and extension bar 10 is arranged on the rear end of pikestaff 2, and extension bar 10 is threaded with pikestaff 2 by first articulation 11, and compressed air hose 4 is by second articulation, 13 spreadings, and wire leading pipe 5 is by the 3rd articulation 12 spreadings.

The operation principle of paint spray gun of the present invention is as follows: the rear end of compressed air hose 4 feeds compressed air, spraying wire penetrates from the rear end of wire leading pipe 5, through rifle head 1, after the energising, electric current is gone into rifle head 1 by wire leading pipe 5 outer copper mesh linear flows, form electric arc on rifle head 1, spraying wire melts and is compressed air and is sprayed onto on the surface of desiring processing work.Because rifle neck 3 can be crooked, so rifle head 1 can regulate arbitrarily in 0～90 ° of scope according to the requirement to the electric arc spraying direction, the spraying of suitable all places, different directions, thus satisfy the needs of coating preparation.Before spraying, need penetrate spraying wire in the ignition tip of rifle head by wire leading pipe, because it is very big that the spray gun after the bending is directly worn a resistance, wear the silk difficulty, again because of the adjustable angle of this rifle head, can be with the rifle head elder generation furnishing position parallel with pikestaff, thereby reduce the resistance of wearing silk, then spraying wire is penetrated in the ignition tip of rifle head,, again the rifle head is adjusted to needed angle then according to need of work.So the structure of this spray gun is convenient to wear spraying wire very much.Because rifle head 1 can be adjusted to perpendicular to by sprayed surface, in spraying process, guaranteed that atomizing compressed air flows to and parameters such as Spray Wire fusing position of intersecting point and distance are consistent, the structure of this rifle head has been adopted the advantage of straight peen arc pistol, can guarantee the deposite metal atomizing in the spraying process well, thereby realize the optimum efficiency of endoporus spray-on coating preparation.That the present invention has is reasonable in design, reliable operation and the advantage of promotion and implementation easily.

Description of drawings:

Fig. 1 is a structural representation of the present invention, and Fig. 2 is the structural representation of rifle head 1 in the embodiment of the present invention one, and Fig. 3 is the structural representation of embodiment three, and Fig. 4 to Fig. 6 is to use the present invention to spray the schematic diagram of workpiece endoporus.

The specific embodiment:

The specific embodiment one: specify present embodiment below in conjunction with Fig. 1 and Fig. 2.Present embodiment is made up of the rifle head 1 that is linked in sequence, rifle neck 3 and pikestaff 2, be penetrated with compressed air hose 4 and wire leading pipe 5 in the pikestaff 2 of hollow-core construction and the rifle neck 3, wire leading pipe 5 is flexible pipes that outer surface coats the copper mesh line, the front end of compressed air hose 4 and wire leading pipe 5 is connected with rifle head 1, and rifle neck 3 is can be crooked and pull straight flexible metal conduit.Rifle head 1 is made up of pair of conductive mouth 1-1, compressed air cover 1-2, rifle head setscrew nut 1-3, rifle head keeper 1-4 and compressed air mouth 1-5, two ignition tip 1-1 are mutually 60 °～70 ° and point to the perforate 1-2-1 of compressed air cover 1-2, the rear end of ignition tip 1-1 connects wire leading pipe 5, compressed air cover 1-2 is connected the end of rifle head setscrew nut 1-3, rifle head keeper 1-4 is arranged in the inner chamber of rifle head setscrew nut 1-3 and wire leading pipe 5 and compressed air mouth 1-5 is fixed, and compressed air mouth 1-5 is connected with compressed air hose 4.During work, spraying wire 6 stretches out from two ignition tip 1-1 respectively, draws close the back sparking and forms electric arc, and compressed air sprays to vaporific molten drop by the spraying surface of the work from the perforate 1-2-1 ejection of compressed air cover 1-2.

The specific embodiment two: specify present embodiment below in conjunction with Fig. 1.The difference of present embodiment and embodiment one is that it comprises that also the described dirt device of discharging fume certainly is made up of collection flue dust cover 7 and negative pressure pipe 8, collects the front portion that flue dust cover 7 is arranged on rifle head 1, the intracavity inter-connection of negative pressure pipe 8 and smoke evacuation dust hood 7 from discharging fume the dirt device.In the inwall process of spraying hole, flue dust is not easy to emit, and can be scattered in coating surface or mixed being sprinkling upon in the coating by nature, directly influences the quality of coating.Should in spraying process, flue dust row can be blotted only from the setting of smoke removing device, can avoid the pollution of flue dust effectively, thereby can improve the quality of coating significantly coating.Negative pressure pipe 8 makes in the collection flue dust cover 7 and produces negative pressure, and flue dust sucked and drains.

The specific embodiment three: specify present embodiment below in conjunction with Fig. 3.The difference of present embodiment and embodiment one is, it also comprises extension bar 10, and extension bar 10 is arranged on the rear end of pikestaff 2, and extension bar 10 is threaded with pikestaff 2 by first articulation 11.Compressed air hose 4 is by second articulation, 13 spreadings, and wire leading pipe 5 is by the 3rd articulation 12 spreadings.So be provided with, paint spray gun of the present invention has very strong working ability, can process the inner surface than deep hole.

Claims

1, a kind of electric arc endoporus paint spray gun of adjustable direction, it comprises rifle head (1), rifle neck (3) and the pikestaff (2) that is linked in sequence, be penetrated with compressed air hose (4) and wire leading pipe (5) in pikestaff of hollow-core construction (2) and the rifle neck (3), it is characterized in that wire leading pipe (5) is the flexible pipe that outer surface coats the copper mesh line, the front end of compressed air hose (4) and wire leading pipe (5) is connected with rifle head (1), and rifle neck (3) is can be crooked and pull straight flexible metal conduit; Rifle head (1) is by pair of conductive mouth (1-1), compressed air cover (1-2), rifle head setscrew nut (1-3), rifle head keeper (1-4) and compressed air mouth (1-5) are formed, the angle that two ignition tips (1-1) are mutually is greater than 60 °, smaller or equal to 70 ° and point to the perforate (1-2-1) of compressed air cover (1-2), the rear end of ignition tip (1-1) connects wire leading pipe (5), compressed air cover (1-2) is connected the end of rifle head setscrew nut (1-3), rifle head keeper (1-4) is arranged in the inner chamber of rifle head setscrew nut (1-3) and wire leading pipe (5) and compressed air mouth (1-5) is fixed, and compressed air mouth (1-5) is connected with compressed air hose (4); It comprises that also the described dirt device of discharging fume certainly is made up of collection flue dust cover (7) and negative pressure pipe (8) from discharging fume the dirt device, and collection flue dust cover (7) is arranged on the front portion of rifle head (1), the intracavity inter-connection of negative pressure pipe (8) and smoke evacuation dust hood (7); It also comprises extension bar (10), extension bar (10) is arranged on the rear end of pikestaff (2), extension bar (10) is threaded with pikestaff (2) by first articulation (11), and compressed air hose (4) is by second articulation (13) spreading, and wire leading pipe (5) is by the 3rd articulation (12) spreading.