CN217963021U

CN217963021U - Fluid gun needle for electrostatic spray gun

Info

Publication number: CN217963021U
Application number: CN202222011799.7U
Authority: CN
Inventors: 王银; 郭巍; 陈铁军; 肖善文
Original assignee: China Shipbuilding Industry Group Changjiang Technology Co ltd
Current assignee: China Shipbuilding Industry Group Changjiang Technology Co ltd
Priority date: 2022-07-31
Filing date: 2022-07-31
Publication date: 2022-12-06
Anticipated expiration: 2032-07-31

Abstract

The utility model provides a fluid gun needle for electrostatic spray gun, including guide bar, connecting rod and pull rod that set up coaxially from the outside to the inside from the spray gun muzzle along the transverse direction, pull rod front end and connecting rod rear end fixed connection, the coaxial axostylus axostyle that is provided with between guide bar and the connecting rod, the axostylus axostyle both ends are connected fixedly with guide bar and connecting rod respectively; the shaft rod is coaxially provided with a fixing piece used for installing a fluid gun needle in the spray gun and a sealing piece used for preventing fluid from leaking backwards, and the sealing piece is arranged at the front end of the fixing piece. The fluid gun needle can effectively seal the fluid passage of the electrostatic spray gun to realize the control of gun opening and closing; the paint spraying device is safe and reliable in use, and the condition that paint leaks from a spray gun is not easy to happen; meanwhile, the wear-resistant and corrosion-resistant coating is wear-resistant and corrosion-resistant, is convenient and quick to disassemble and assemble, and has a very high application prospect.

Description

Fluid gun needle for electrostatic spray gun

Technical Field

The utility model relates to a gun needle technical field for the spray gun, concretely relates to fluid gun needle for electrostatic spray gun.

Background

Spray guns are devices that use a quick release of liquid or compressed air as a motive force, often used in the industry for the spraying of paint. However, as the requirement for the quality of the coated object is higher and higher, the electrostatic spray gun is widely used as a basic product for the modernization of industrial spraying equipment.

Compared with the traditional spray gun, the electrostatic spray gun has the advantages of uniform and full paint film quality, strong adhesive force and good decoration, thereby being widely applied to surface spraying of various products such as metal parts, furniture, automobiles, airplanes and the like. The fluid gun needle, which is a very important component of the electrostatic spray gun and is also a main element for controlling the on-off gun, is often corroded or abraded in the spraying process, the abraded gun needle cannot effectively close the nozzle or cause paint to leak backwards to the gun body of the electrostatic spray gun, and the electrostatic spray gun cannot work normally if the gun needle is not replaced frequently. Therefore, the structure of the fluid gun needle becomes very important, and the fluid gun needle needs to meet the problems of perfect adaptation to the electrostatic spray gun in structure, convenience and rapidness in disassembly and assembly and safety and durability in use, and becomes the focus of research on the fluid gun needle of the electrostatic spray gun at present.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a fluid gun needle for an electrostatic spray gun, which is designed specifically for the characteristics of the electrostatic spray gun. When the anti-leakage device is used in cooperation with an electrostatic spray gun, the coating can be effectively prevented from being leaked from a fluid channel, and the anti-leakage device has the beneficial effects of safety, reliability, portability, durability and convenience in disassembly and assembly.

The utility model discloses a fluid gun needle for electrostatic spray gun, include guide bar, connecting rod and the pull rod that sets up coaxially from the outside to the inside of spray gun muzzle along the transverse direction, pull rod front end and connecting rod rear end fixed connection, the coaxial axostylus axostyle that is provided with between guide bar and the connecting rod, the axostylus axostyle both ends are connected with guide bar and connecting rod respectively and are fixed; the shaft rod is coaxially provided with a fixing piece used for installing a fluid gun needle in the spray gun and a sealing piece used for preventing fluid from leaking backwards, and the sealing piece is arranged at the front end of the fixing piece.

Furthermore, the guide rod is arranged in a fluid channel at the front end of the spray gun, the connecting rod and the pull rod are arranged in an installation cabin at the rear side of the fluid channel, and the fixing piece is fixedly installed at the rear end of the fluid channel of the spray gun; the guide rod can transversely move in the fluid channel through the internal power of the spray gun; the connecting rod and the pull rod can move transversely in the mounting cabin through the internal power of the spray gun.

Furthermore, a plurality of guide grooves are circumferentially arranged on the guide rod and used for fluid to pass through the guide rod in the fluid channel.

Furthermore, the front end of the guide rod is provided with a valve core which is used for being matched with a fluid valve seat of the spray gun to control a fluid channel to be opened and closed, the front end of the valve core is welded with a steel ball matched with the fluid valve seat, and the rear end of the valve core is provided with an anti-falling groove which is used for being connected with the guide rod in an unreleasable mode.

Furthermore, the front end of the connecting rod is provided with a guide part which is used for extending into a sliding groove arranged at the rear end of the fixing part; the tail end of the guide part is provided with a flat square, and the flat square is used for being clamped into a straight groove arranged in the fixing part sliding groove.

Furthermore, still including the combination set up in the setting element and the retaining member of pull rod rear end, setting element and retaining member are used for horizontal spacing to set up the spray gun trigger on the pull rod.

Furthermore, a straight groove is formed in the tail end of the pull rod, and the straight groove is used for rotating the connecting rod after being fixed with the connecting rod.

Furthermore, the joints at the two ends of the shaft lever are provided with anti-drop grooves for non-detachable connection with the connecting rod and the guide rod.

The beneficial effects of the utility model are that: the utility model provides a fluid gun needle for electrostatic spray gun, which can effectively seal the fluid passage of the electrostatic spray gun to realize the control of gun opening and closing; the paint spraying device is safe and reliable in use, and the paint is not easy to leak out of the spray gun; meanwhile, the wear-resistant and corrosion-resistant coating is wear-resistant and corrosion-resistant, is convenient and quick to disassemble and assemble, and has a very high application prospect.

Drawings

The invention will be further described with reference to the following figures and examples:

fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the spray gun of the present invention;

FIG. 3 is a cross-sectional view taken at A in FIG. 1;

FIG. 4 is a cross-sectional view at B of FIG. 1;

fig. 5 shows the maximum gun-opening state of the present invention.

Wherein the reference numerals are: 1-electrostatic spray gun body; 2-a fluid gun needle; 3-a fluid valve seat; 4-trigger; 21-a connecting rod; 22-a pull rod; 23-a compression screw; 24-a sealing plug; 25-a mandrel; 26-a guide rod; 27-a valve core; 28-a positioning nut; 29-locking nut.

Detailed Description

As shown in the figures, the fluid gun needle for the electrostatic spray gun of the present invention comprises a guide rod 26, a connecting rod 21 and a pull rod 22 coaxially arranged from outside to inside along the transverse direction from the gun muzzle of the spray gun, wherein the front end of the pull rod 22 is fixedly connected with the rear end of the connecting rod 21, a shaft rod is coaxially arranged between the guide rod 26 and the connecting rod 21, and two ends of the shaft rod are respectively connected and fixed with the guide rod 26 and the connecting rod 21; the shaft rod is coaxially provided with a fixing piece used for installing a fluid gun needle in the spray gun and a sealing piece used for preventing fluid from leaking backwards, and the sealing piece is arranged at the front end of the fixing piece.

In the embodiment, the spray gun trigger device also comprises a positioning part and a locking part which are combined and arranged at the rear end of the pull rod 22, wherein the positioning part and the locking part are used for transversely limiting the spray gun trigger 4 arranged on the pull rod; the positioning nut 28 and the locking nut 29 can adjust the moving distance of the fluid gun needle 2 by changing the position of the positioning nut 28 on the pull rod 22, and the fluid gun needle is locked by the locking nut 29 after the adjustment is finished.

Referring to fig. 1 and 2, the fluid gun needle structure mainly includes a guiding rod 26, a connecting rod 21, a pull rod 22, a shaft rod, a fixing member, a sealing member, a positioning member and a locking member, wherein the shaft rod is a mandrel 25, the fixing member is a compression screw 23, the sealing member is a sealing plug 24, the positioning member is a positioning nut 28, and the locking member is a locking nut 29. The mandrel 25 is a steel part, the connecting rod 21 is an industrial plastic part, and one end of the mandrel 25 is placed into the connecting rod 25 and fixed, so that the two parts are integrated; then a compression screw 23 and a sealing plug 24 are arranged on a mandrel 25 to ensure that the mandrel can move and rotate; then the other end of the mandrel 24 is fixed together through a guide rod; finally, the pull rod and the connecting rod are connected together through threads, non-detachable glue is coated on the threads to be fixed into a whole, and then the positioning nut 28 and the locking nut 29 are installed to form a complete fluid gun needle.

In this embodiment, the guide rod 26 is disposed in a fluid passage at the front end of the spray gun body 1, the connecting rod 21 and the pull rod 22 are disposed in an installation chamber at the rear side of the fluid passage, and the compression screw 23 is installed and fixed at the rear end of the spray gun fluid passage; the guide rod 26 is transversely movable in the fluid passage by the internal power of the lance; the connecting rod 21 and the pull rod 22 are laterally movable in the mounting compartment by means of the trigger 4 of the spray gun.

In this embodiment, the guide bar 26 has a plurality of guide grooves arranged along the circumferential direction, and the guide grooves are used for fluid to pass through the guide bar 26 in the fluid channel.

Referring to fig. 1 and 3, the guide rod 26 is made of high-strength corrosion-resistant industrial plastic by injection molding, and fixedly connects the valve core 27 and the spindle 25, and has a cross-sectional shape as shown in fig. 4, and four guide grooves for fluid flow are formed thereon. The compression screw 23 material is high strength industry plastics, and the excircle processing goes out the screw thread for be connected with the electrostatic spray gun rifle body 1, and the inside processing of compression screw 23 has the hole of guiding hole and assembly dabber 25, and the guiding axle and the dabber 25 of connecting rod 21 move in the guiding hole during switch rifle, and compression screw and connecting rod cooperation end face are opened simultaneously and are used for the connecting rod to go up complex word groove. The sealing plug 24 is made of polytetrafluoroethylene material, a conical surface is processed on the outer side of the sealing plug and used for sealing a gap between the compression screw 23 and the spray gun body 1, and a small hole matched with the core shaft 25 is further processed in the sealing plug 24. The mandrel 25 is a thin steel wire, the joints of the two ends of the mandrel are provided with anti-drop grooves, and the two ends of the mandrel are respectively connected with the connecting rod 21 and the guide rod 26 in an unreleasable way.

In this embodiment, the front end of the guide rod 26 is provided with a valve core 27 for cooperating with the fluid valve seat 3 of the spray gun to control the opening and closing of the fluid passage, the valve core is made of stainless steel material, the front end of the valve core 27 is welded with a steel ball cooperating with the fluid valve seat, and the cooperation end of the valve core and the guide rod 26 is provided with an anti-drop groove for non-detachable connection with the guide rod.

In this embodiment, the front end of the connecting rod 21 is provided with a guide portion, and the guide portion is used for extending into a sliding groove arranged at the rear end of the fixing member; the tail end of the guide part is provided with a flat square, and the flat square is used for being clamped into a straight groove arranged in the fixing part sliding groove. The connecting rod 21 is an industrial plastic piece formed by injection molding of high-strength industrial plastic, a guide shaft is arranged at the matching end of the connecting rod and the compression screw 23, the guide shaft can extend into an inner hole of the compression screw 23, a flat square is processed at the tail end of the guide shaft and can be clamped into a straight groove of the compression screw 23, and the structure shown in the figure 3 is formed and used for dismounting the compression screw; the other end of the connecting rod 21 is provided with a threaded hole for connecting the pull rod 22.

In this embodiment, a straight groove is formed at the tail end of the pull rod 22, and the straight groove is used for rotating the connecting rod after being fixed with the connecting rod. The pull rod 22 is made of stainless steel material, and the outer circle of the pull rod is processed with screw threads; the front end of the pull rod 22 is connected and fixed with the connecting rod 21, and the tail end of the pull rod 22 is provided with a straight groove; when the pull rod 22 is fixed with the connecting rod 21, the connecting rod 21 can be rotated through the straight groove.

The working principle of the fluid gun needle of the embodiment is as follows: the fluid gun needle 2 is arranged in the electrostatic spray gun body 1, the compression screw 23 on the fluid gun needle 2 is connected with the electrostatic spray gun body 1 through threads, and the compression screw can compress the sealing plug 24 after being screwed down to form a sealing structure. In the gun closing state, the valve core 27 is tightly pressed against the valve port of the fluid valve seat 3 under the action of the spring force of the fluid gun needle 2, so that the valve port is closed. When the trigger 4 is pulled, the trigger 4 drives the fluid gun needle 2 to move backward, i.e. the valve core 27 moves backward relative to the fluid valve seat 3, and opens the fluid passage, thereby performing the spraying operation. The distance of movement of the fluid gun needle 2 can be adjusted by adjusting the position of the positioning nut 28, and after adjustment, the fluid gun needle is locked by the locking nut 29.

Finally, it is noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. A fluid gun needle for an electrostatic spray gun, comprising: the spray gun comprises a guide rod, a connecting rod and a pull rod which are coaxially arranged from outside to inside along the transverse direction from a gun mouth of the spray gun, wherein the front end of the pull rod is fixedly connected with the rear end of the connecting rod, a shaft rod is coaxially arranged between the guide rod and the connecting rod, and two ends of the shaft rod are respectively connected and fixed with the guide rod and the connecting rod; the shaft rod is coaxially provided with a fixing piece used for installing a fluid gun needle in the spray gun and a sealing piece used for preventing fluid from leaking backwards, and the sealing piece is arranged at the front end of the fixing piece.

2. The fluid gun needle for an electrostatic spray gun of claim 1, wherein: the guide rod is arranged in a fluid channel at the front end of the spray gun, the connecting rod and the pull rod are arranged in an installation cabin at the rear side of the fluid channel, and the fixing piece is installed and fixed at the rear end of the fluid channel of the spray gun; the guide rod can transversely move in the fluid channel through the internal power of the spray gun; the connecting rod and the pull rod can move transversely in the mounting cabin through the internal power of the spray gun.

3. The fluid gun needle for an electrostatic spray gun of claim 2, wherein: the guide rod is circumferentially provided with a plurality of guide grooves, and the guide grooves are used for fluid to pass through the guide rod in the fluid channel.

4. The fluid gun needle for an electrostatic spray gun of claim 3, wherein: the front end of the guide rod is provided with a valve core which is used for being matched with a fluid valve seat of the spray gun to control the opening and closing of a fluid channel, the front end of the valve core is welded with a steel ball matched with the fluid valve seat, and the rear end of the valve core is provided with an anti-falling groove which is used for being connected with the guide rod in an unreleasable mode.

5. The fluid gun needle for an electrostatic spray gun of claim 2, wherein: the front end of the connecting rod is provided with a guide part, and the guide part is used for extending into a sliding groove arranged at the rear end of the fixing part; the tail end of the guide part is provided with a flat square, and the flat square is used for being clamped into a straight groove arranged in the fixing part sliding groove.

6. The fluid gun needle for an electrostatic spray gun of claim 1, wherein: still including the combination set up in setting element and retaining member of pull rod rear end, setting element and retaining member are used for horizontal spacing setting up the spray gun trigger on the pull rod.

7. The fluid gun needle for an electrostatic spray gun of claim 6, wherein: the tail end of the pull rod is provided with a straight groove, and the straight groove is used for rotating the connecting rod after being fixed with the connecting rod.

8. The fluid gun needle for an electrostatic spray gun of claim 1, wherein: and the joints at the two ends of the shaft lever are provided with anti-drop grooves for non-detachable connection with the connecting rod and the guide rod.