CN212943533U

CN212943533U - Coating nozzle structure of spray gun

Info

Publication number: CN212943533U
Application number: CN202021306131.XU
Authority: CN
Inventors: 刘清龙; 李苏诺; 吴航艇
Original assignee: Ningbo Lis Industrial Co ltd
Current assignee: Ningbo Lis Industrial Co ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-04-13
Anticipated expiration: 2030-07-06

Abstract

The utility model provides a coating nozzle structure of spray gun belongs to spray gun accessory technical field, include: the first tray body and the second tray body are of annular tray structures and are uniformly connected to the outer peripheral surface of the tubular base, the outer diameter of the first tray body is larger than that of the second tray body, and a first annular inclined surface facing the outer side of the first tray body is formed on the outer edge surface of the first tray body; the utility model has the advantages that: the nozzle has simple and reliable structure, is convenient to process and produce and is also convenient to assemble.

Description

Coating nozzle structure of spray gun

Technical Field

The utility model belongs to the technical field of the spray gun accessory, a coating nozzle structure of spray gun is related to.

Background

The spray gun generally comprises a gun body, a nozzle, an air cap, a retaining screw and a trigger, wherein the nozzle is installed on an insert in an inner hole at the front end of the gun body, the air cap is sleeved outside the nozzle, the front end of a valve needle penetrates through a valve needle hole I of the insert in the gun body and a valve needle hole II in the nozzle, so that the valve needle is in sealed butt joint in a liquid outlet hole of the nozzle, and the trigger is buckled at the middle part of the valve needle, so that the valve needle is driven to move axially, and then the nozzle is opened or closed.

Wherein the structure of the nozzle is dependent on whether the spray gun is convenient and reliable in use, for example a Chinese patent with application number 201910704447.X discloses a nozzle (24, 50) for a spray gun (1), in particular a paint spray gun, wherein the nozzle has at least one material nozzle (40) and a disc element (32) extending radially from the material nozzle, the material nozzle has a hollow section through which the material to be sprayed is guided and a material outlet (28), and wherein the disc element has at least one through opening (36), wherein the nozzle has at least one first impact disk (30, 31) arranged on a disk element (32), in particular arranged in an undetachable manner, it has an inner periphery and an outer periphery, and the first impact disc (30, 31) is arranged directly, in particular without an interposed sealing element, on the disc element (32).

The spray gun nozzle has a complex structure, is troublesome in production and assembly, and has certain improvement space.

Disclosure of Invention

The utility model aims at the above-mentioned problem that prior art exists, provide a coating nozzle structure of spray gun.

The purpose of the utility model can be realized by the following technical proposal: a coating material nozzle structure for a spray gun, comprising: the outer periphery of the first tray body is larger than that of the second tray body, and a first annular inclined surface facing the outer side of the first tray body is formed on the outer periphery of the first tray body.

Preferably, the airflow cap is sleeved on the tubular base and provided with an annular inner end, a second annular inclined surface facing the inner side of the annular inner end is formed on the end surface of the annular inner end, the annular inner end is in interference connection with the first disc body, and the first annular inclined surface is matched with the second annular inclined surface.

Preferably, an annular protrusion extending in the radial direction is formed on the outer edge surface of the first disk body, and the surface of the annular protrusion is connected with the outer edge of the first annular inclined surface.

Preferably, the first tray body is provided with a through hole.

Preferably, the surface of the second tray body is formed with a guide slope in a ring shape, and the guide slope faces the first tray body.

Preferably, a material hole is formed in the tubular base.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the nozzle has simple and reliable structure, is convenient to process and produce and is also convenient to assemble.

2. Because the outer diameter of the first disc body is larger than that of the second disc body, the first annular inclined plane facing outwards is not blocked or interfered, and the processing and the production of the nozzle are facilitated.

3. The second annular inclined plane is towards the interior of the annular inner end head, and the second annular inclined plane can be conveniently machined at the tail end of the annular inner end head because the interior of the annular inner end head is not blocked.

4. The annular bulge can limit the effect, and in the actual structure, the sealing ring can be sleeved on the annular bulge, and then the first annular inclined plane and the second annular inclined plane are sealed through the sealing ring.

Drawings

Fig. 1 is a schematic structural diagram of the paint nozzle structure of the present invention.

Fig. 2 is an exploded view of the paint nozzle structure of the present invention.

Fig. 3 is a schematic structural diagram of the annular inner end of the present invention.

In the figure, 100, a tubular base; 110. a material hole; 200. a first tray body; 210. a first annular chamfer; 220. an annular projection; 230. a through hole; 300. a second tray body; 310. a guide ramp; 400. an airflow cap; 410. an annular inner end; 420. a second annular chamfer.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2 and 3, a coating material nozzle structure of a spray gun includes: the tubular base 100, the first tray 200 and the second tray 300, it is worth to say here that the first tray 200 is close to the inlet end of the tubular base 100, and the second tray 300 is close to the outlet end of the tubular base 100, wherein the first tray 200 is used for air to pass through, and the second tray 300 is an air guiding tray.

The first tray body 200 and the second tray body 300 are both annular tray-shaped structures and are uniformly connected to the outer circumferential surface of the tubular base 100, preferably, the first tray body 200 and the second tray body 300 are both integrally connected to the annular base, and in terms of actual structure, the first tray body 200 and the second tray body 300 are both radially convex flat structures.

It should be noted here that in the prior art, a disc-shaped element may exist, but the cross section of the disc-shaped element is similar to L shape or U shape, and the disc-shaped element has an annular groove structure, so that the structure in the prior art is complicated and difficult to machine, and the first disc 200 in this embodiment is a flat disc without providing a groove or forming an annular vertical wall structure.

The outer diameter of the first disc 200 is greater than that of the second disc 300, and a first annular slope 210 facing the outside is formed on the outer peripheral surface of the first disc 200.

The first annular inclined surface 210 faces outward, and the first annular inclined surface 210 also faces the second disc 300, which is convenient for machining, it should be noted here that, because the distance between the first disc 200 and the second disc 300 is not large, if an inclined surface arranged inward is adopted, the second disc 300 is located in front of the annular inclined surface and blocks a machining tool, so it is difficult to machine the annular inclined surface, and because the outer diameter of the first disc 200 is larger than that of the second disc 300, the first annular inclined surface 210 facing outward is not obstructed or interfered when being opened, which is convenient for machining and producing the nozzle.

It should be noted here that, in the prior art, since the cross section of the disc-shaped element is similar to an L shape, the conical surface of the disc-shaped element is formed on the inner annular surface of the vertical portion, the conical surface faces inward, and the air guiding disc is arranged in front of the conical surface, the difficulty is relatively high during actual processing, and the processing difficulty can be effectively reduced after the structure in the present embodiment is adopted.

As shown in fig. 1, 2, and 3, on the basis of the above embodiment, the air flow cap 400 is further included, the air flow cap 400 is sleeved on the tubular base 100, an annular inner end 410 is provided on the air flow cap 400, a second annular inclined surface 420 facing the inner side of the annular inner end 410 is formed on an end surface of the annular inner end 410, the annular inner end 410 is in interference connection with the first tray 200, and the first annular inclined surface 210 is matched with the second annular inclined surface 420.

Preferably, the annular inner end 410 of the airflow cap 400 can be connected with the first disk body 200 through the second annular inclined surface 420, and the first annular inclined surface 210 and the second annular inclined surface 420 can achieve a sealing effect through the principle of conical surface fit, and can enable the first disk body 200 to be matched with airflow caps 400 with different sizes.

It should be noted that the second annular inclined surface 420 faces the inside of the annular inner tip 410, and since there is no obstruction inside the annular inner tip 410, the second annular inclined surface 420 can be conveniently machined at the end of the annular inner tip 410.

It should be noted that, although the disk-shaped element is also connected to the air cap by the tapered surface in the prior art, the end of the air cap is generally provided with an outward tapered surface, and the disk-shaped workpiece is provided with an inward tapered surface, which causes great inconvenience in processing.

As shown in fig. 1, 2 and 3, in addition to the above embodiment, an annular protrusion 220 extending in a radial direction is formed on an outer edge surface of the first disk 200, and a surface of the annular protrusion 220 is connected to an outer edge of the first annular inclined surface 210.

Preferably, the annular protrusion 220 is actually connected to the outer circumferential surface of the first disc 200 and is radially connected to the first annular inclined surface 210, so that the annular protrusion 220 can correspond to the bottom surface of the annular inner tip 410, when the annular inner tip 410 is large in size, the annular protrusion 220 can limit the effect, and in an actual structure, a sealing ring can be sleeved on the annular protrusion 220, and then the first annular inclined surface 210 and the second annular inclined surface 420 are sealed by the sealing ring.

As shown in fig. 1, 2 and 3, in addition to the above embodiments, the first tray 200 is provided with a through hole 230, and air can pass through the first tray 200 through the through hole 230.

As shown in fig. 1, 2 and 3, in the above embodiment, a guide slope 310 having a ring shape is formed on a surface of the second tray 300, and the guide slope 310 faces the first tray 200.

Preferably, the second disk 300 is used to guide the air flow flowing out of the through holes 230 of the first disk 200 so that the air flow is more uniform, wherein the guide slope 310 has a circular slope or a conical structure, and the air flow flows out of the through holes 230 and impinges on the guide slope 310, thereby guiding the flow direction of the air flow.

As shown in fig. 1, on the basis of the above embodiment, a material hole 110 is formed in the tubular base, and the material flows in the material hole 110, so that the front end of the tubular base can be sprayed with the material, wherein the material may be paint, lacquer or the like.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A paint nozzle structure for a spray gun, comprising: the outer periphery of the first tray body is larger than that of the second tray body, and a first annular inclined surface facing the outer side of the first tray body is formed on the outer periphery of the first tray body.

2. A paint nozzle structure for a spray gun as claimed in claim 1, wherein: still include the air current cap, the air current cap cover is established on the tubulose base, and be provided with end in the annular on the air current cap, the terminal surface of end is formed with towards its inboard second annular inclined plane in the annular, end in the annular with first disk body is contradicted and is connected, and first annular inclined plane with the cooperation of second annular inclined plane.

3. A paint nozzle structure for a spray gun as claimed in claim 1, wherein: an annular bulge extending towards the radial direction is formed on the outer edge surface of the first disc body, and the surface of the annular bulge is connected with the outer edge of the first annular inclined surface.

4. A coating material nozzle structure of a spray gun as claimed in claim 1 or 3, wherein: a through hole is formed in the first disc body.

5. A paint nozzle structure for a spray gun according to claim 4, wherein: the surface of the second disc body is provided with an annular guide inclined surface, and the guide inclined surface faces the first disc body.

6. A coating material nozzle structure of a spray gun as claimed in claim 1 or 2, wherein: a material hole is formed in the tubular base.