TWI659783B - Air-walled anti-stick spray coating structure - Google Patents

Abstract

The invention provides an air wall type anti-sticking spraying structure, which includes: an air wall spray module having a pneumatic flow channel and a gas nozzle; and a paint spray module having a material spray channel and a Spray nozzle; the spray nozzle is formed on one side of the spray nozzle. With the implementation of the present invention, when coating various types of screws, in addition to being able to accurately perform partial coating, it can also control areas that do not need to be coated, and the problem of non-sticky coating during coating. .

Description

Air wall type anti-stick coating structure

The invention is a gas wall type anti-adhesion spraying structure, and particularly relates to a gas wall type anti-adhesion spraying structure for micro-small screw coating.

Screw is a common fastener and is widely used in machinery, electrical appliances and buildings. The general material is metal or plastic, which is cylindrical, and the grooves with embossing on the surface are called threads. The thread is a helical inclined surface that surrounds the side of the screw. The main function of the screw is to join two objects, or to fix the position of an object. Generally, the diameter of the top of the screw is large. Commonly, there are round, square or regular hexagons. If the top is a regular hexagon, you can use a wrench to turn the screw. If the top is round, there will be grooves on the front of the top. Screwdriver to turn the screw.

With the development of modern industry, many screws have special functions, such as anti-loosening, anti-leakage, adjustable, anti-slag, lubrication, anti-locking, and pre-assembly, etc. These functions need to be Special coatings are used to achieve different effects. During the coating process, the screws of some electronic products have a very small volume, sometimes only a few centimeters in length. At this time, how to effectively coat the screws is already The big problem is how to keep the coating from sticking to the surface of the nut when coating.

As shown in Figure 1, it is a screw 30 with a total length of about 2 centimeters (mm). After the coating is applied, the original spray 230 should only be applied to the normal coating area 310 of the screw 30, but Because the volume of the screw 30 is very small and the conventional technology is poor, the spray material 230 is not only coated on the normal coating area 310, but also adheres to the non-coating area 320, such as the surface of the nut. Precision products, such screws with poor adhesion, cannot be used in quality.

The invention is an air-wall anti-stick coating structure, which mainly solves how to accurately apply local coating when various types of screws are being coated, and also avoids areas where coating is not needed. The problem of paint sticking occurred.

The invention provides an air wall type anti-sticking spraying structure, which includes: an air wall spray module having a pneumatic flow channel and a gas nozzle, the gas nozzle is formed at the outlet of the gas pressure channel; and a paint spray mold Group, which has a spray flow channel and a spray nozzle, the spray nozzle is formed at the outlet of the spray flow channel; wherein the airlock or air wall formed by the spray nozzle forms an isolation layer, and the spray layer is used to avoid spraying The paint sprayed from the nozzle is dropped; and the air jet nozzle is formed on the lower side of the spray nozzle and juxtaposed with each other, and the formed air wall is also parallel to the sprayed paint.

By implementing the present invention, at least the following progressive effects can be achieved:

First, the local area can be effectively coated with paint.

Second, it can be precisely controlled to avoid the area that is not needed to be coated by the coating.

100‧‧‧Air-wall anti-stick coating structure

10‧‧‧Air Wall Jet Module

110‧‧‧air pressure runner

111‧‧‧Air inlet

120‧‧‧jet nozzle

130‧‧‧Airlock or air wall

20‧‧‧paint spray module

210‧‧‧ jet runner

211‧‧‧jet angle structure

212‧‧‧ runner floor

213‧‧‧feed side

214‧‧‧ extension

220‧‧‧ Nozzle

230‧‧‧ spray

30‧‧‧Screw

310‧‧‧Normal coating area

320‧‧‧Uncoated area

40‧‧‧Residual material recovery module

[Figure 1] Schematic diagram of poor paint adhesion after screw spraying; [Fig. 2] Fig. 1 is a three-dimensional embodiment of an air wall type anti-adhesive spraying structure according to the present invention; [Fig. 3] is a three-dimensional embodiment of an air wall type anti-adhesive spraying structure according to the present invention Second; [Figure 4] is a sectional view of the embodiment of Figure 2 along the line AA; [Figure 5] is an exploded embodiment of an air wall type anti-stick coating structure of the present invention; FIG. 6A] is a diagram of an application example of an air wall type anti-adhesive spraying structure of the present invention; [FIG. 6B] is a diagram of an embodiment of a screw after being sprayed by a gas wall type anti-adhesion spraying structure; and [ FIG. 7 is a diagram of an embodiment of the present invention further including a surplus material recovery module.

As shown in FIG. 2 to FIG. 5, this embodiment is an air wall type anti-adhesion spraying structure 100, which includes: an air wall spray module 10; and a paint spray module 20.

Air wall jetting module 10, which has a gas pressure flow channel 110 and a gas nozzle 120 formed at the outlet of the gas pressure flow channel 110. The gas pressure flow channel 110 is provided with a gas under pressure by the air inlet nozzle 111. After passing through the air nozzle 120 and ejecting, an airlock or air wall 130 will be formed.

In order to make the gas under pressure provided by the air pressure runner 110 effectively become an air lock or an air wall 130, the air jet nozzle 120 can be designed into a flat structure. In addition, in addition to the flat structure of the air nozzle 120, the air nozzle 120 can also be designed into other shapes, and the direction and range of the air flow can be controlled by the shape of the air nozzle 120. The air lock or air wall 130 thus formed can respond to different Products to achieve different isolation effects.

The paint spraying module 20 has a spraying flow channel 210 and a spraying nozzle 220. The spraying nozzle 220 is formed at an outlet of the spraying flow channel 210, and the spraying flow channel 210 is provided by a feeding end 213. Material 230, and the spray material 230 is obtained by mixing a pressured gas with the coating material to be applied. Therefore, after the spray material 230 passes the spray nozzle 220, it will be sprayed to the screw 30 or other kinds of objects to be sprayed.

The design of the spray nozzle 220 is formed at the outlet of the spray flow channel 210. In order to make the gas under pressure provided by the spray flow channel 210 effectively drive the coating to spray coating, the spray nozzle 220 can be designed It becomes a flat structure. In addition, the spray nozzle 220 can also be designed into other shapes, and the spraying direction and range of the spray material 230 can be controlled by the shape of the spray nozzle 220, so that different spraying effects can be achieved.

In order to enable the spray nozzles 220 to uniformly distribute the spray materials during spraying, the spray flow channel 210 can be connected to the spray nozzles 220 to further form a diffused spray angle structure 211. In addition, in order to make the gas field at the jet angle structure 211 smooth, the bottom of the jet angle structure 211 can be designed as a flow channel bottom plate 212 made of metal, such as stainless steel.

In addition to smoothing the gas field at the jet angle structure 211, the runner bottom plate 212 is also used to separate the pneumatic runner 110 and the jet runner 210, so that the pneumatic runner 110 and the jet runner 210 can Side by side without interfering with each other. In addition, the air wall spray module 10 or the paint spray module 20 of the entire air wall type anti-stick coating structure 100 may be a metal material structure, such as a copper material.

As shown in FIG. 6A and FIG. 6B, when this embodiment is used, this embodiment mainly uses an air lock or air wall 130 formed by the air nozzle 120 to form an isolation layer, and prevents the spray nozzle 220 from ejecting through the isolation layer. The paint falls, and thus the paint is limited to a certain spraying range, so that when it is applied, it is only applied to the normal coating area 310 of the screw teeth, without letting the screw head and seat surface ... and other non-painting The part of the cloth area 320 is adhered by the spray material 230. Therefore, in the design, the spray nozzle 220 is formed on one side of the air spray nozzle 120.

In a more specific embodiment, the air-jet nozzle 120 is disposed at the nozzle 220 The lower side. In addition, because the air nozzle 120 and the nozzle 220 are flat structures and are juxtaposed with each other, the air wall 130 formed thereon also runs in parallel with the sprayed paint.

In order to make the air lock or the air wall 130 have a better effect, the runner bottom plate 212 can be designed to have an extension 214, and the extension 214 protrudes from the air nozzle 120 and the nozzle 220, so that The air jet of the air jet nozzle 120 and the air jet 30 of the air jet nozzle 220 can travel more efficiently.

As shown in Figure 7, in order to effectively recover the remaining material after spraying, and also further enhance the role of the air nozzle 120 and the spray nozzle 220, it can be at a position corresponding to the spray nozzle 220, that is, the screw to be sprayed On the other side of 30, a residual material recovery module 40 can be further provided, and the residual material recovery module 40 can be a suction structure.

However, the above embodiments are used to explain the characteristics of this creation. The purpose is to enable those skilled in the art to understand and implement the content of this creation, rather than to limit the scope of patents for this creation. Equivalent modifications or modifications made by the spirit of disclosure should still be included in the scope of patent application described below.

Claims (9)

An air wall type anti-adhesion spraying structure includes: an air wall spray module having a pneumatic flow channel and a jet nozzle formed at an outlet of the pneumatic flow channel; and a paint spray module It has a spraying flow channel and a spraying nozzle, the spraying nozzle is formed at the outlet of the spraying flow channel; wherein the air lock or air wall formed by the air jet nozzle forms an isolation layer, and the isolation Layer to prevent the paint sprayed by the spray nozzle from falling; and the air spray nozzle is formed on the lower side of the spray nozzle and juxtaposed with each other, and the air wall formed is also parallel to the sprayed paint. The spraying structure described in the first item of the patent application scope, wherein the air jet nozzle or the spray nozzle is a flat structure. The spraying structure according to item 1 of the scope of the patent application, wherein the spraying flow channel has a diffused spraying angle structure at the point where the spraying nozzle is connected. The spraying structure described in item 3 of the scope of the patent application, wherein the bottom of the spray angle structure is a bottom plate of a flow channel made of metal. The spraying structure described in item 1 of the patent application scope, wherein the air wall spray module is a metal structure. The spraying structure according to item 1 of the scope of patent application, wherein the paint spraying module is a metal structure. The spraying structure according to item 1 of the scope of the patent application, wherein the air jet nozzle and the spray nozzle are respectively flat structures and are juxtaposed with each other. The spraying structure according to item 7 of the scope of the patent application, wherein the air jet nozzle has an extension portion, and the extension portion protrudes out of the spray nozzle. The spraying structure described in item 1 of the scope of the patent application, further includes a residual material recovery module, which is provided corresponding to the spray nozzle and is a suction structure.