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Process For Manufacturing Coating Gun And Coating Gun

A manufacturing method and coating technology, applied in the direction of spraying device, spraying device, liquid spraying device, etc., can solve problems such as excessive consumption of compressed air, poor geometry of the action area, and reduced effectiveness

Inactive Publication Date: 2017-04-12
EXCEL IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this can lead to an "overspray" phenomenon which causes the spray area to be sprayed beyond the desired area of ​​impact, resulting in poor area geometry and thus making this technology unusable for high viscosity products with viscosities such as greater than 120 centipoise reason
In addition, when the injection air pressure is increased, the effectiveness of the above-mentioned so-called additional "vortex" airflow will also be reduced, resulting in excessive consumption of compressed air in the above-mentioned additional circuit

Method used

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  • Process For Manufacturing Coating Gun And Coating Gun
  • Process For Manufacturing Coating Gun And Coating Gun
  • Process For Manufacturing Coating Gun And Coating Gun

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] Figure 1 ~ Figure 3 Shown is an applicator gun 2 for applying a paint product. In this example, the paint product is paint in powder or liquid form. Alternatively, it may also be a varnish, a solvent, an ink or a lubricant (for example as oil).

[0035] The applicator gun 2 comprises a product supply tube 4, a compressed air supply tube 8, and a power cord 6 for electrostatically charging the product. The coating gun 2 also includes a spray head 10, see the cross-sectional view for details figure 2 with image 3 .

[0036] Such as figure 2 As shown, spray head 10 comprises injectors 12 for spraying a stream of product along spray axis XX'. The injector 12 is formed by two coaxial parts 12a and 12b forming an annular product injection channel between them. Accordingly, the injector 12 is arranged with a circular active area. Depending on the pressure of the product flow, the active area may also be in the shape of a disc or a ring. The injector 12 is thus a "...

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Abstract

The present invention discloses a process for manufacturing a coating gun and the coating gun. This method serves to manufacture the coating gun, and this gun comprises an injector 12 for spraying a round jet along a spray axis and a cap 14 arranged coaxially around the injector, this cap being provided to form an air knife around the jet. This method comprises a step consisting of sizing an axial excess dimension of the injector relative to the cap based on the diameter of the injector. The coating gun comprises the injector 12 for spraying the round jet along the spray axis, the cap 14 arranged coaxially around the injector, provided to form the air knife around the jet. The injector 12 protrudes axially relative to the cap 14 and the axial excess dimension d of the injector relative to the cap can be adjusted between a minimum value and a maximum value that are determined based on the diameter D of the injector 12.

Description

technical field [0001] The invention relates to a coating gun manufacturing method and the coating gun. Background technique [0002] In the art of spraying paint products, it is a known practice to apply the product using an applicator gun. The type of applicator gun can be manual or automatic and includes injectors that inject a stream of product along the spray axis. Depending on the type of injector used, the product flow can be either a flat jet or a round jet. Accordingly, the terms "round jet" or "flat jet" injectors are used hereinafter. Flat jets have the form of action of an extremely stretched ellipse, while round jets have the form of action of a ring or disc, depending on the pressure of the jet. More specifically, the invention applies to the applicator guns described in FR-A-3,009,688 equipped with "round jet" injectors. [0003] In a known manner, a "circular jet" injector comprises a cap arranged coaxially around the injector, and an annular product inje...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05B1/02B05B15/04B05B12/00B05B12/18
CPCB05B12/18B05B1/02B05B7/066B05B7/0815B05B7/0823B05B7/083B05B12/002B05B1/06B05B5/025B05B7/12B05B7/062B05B7/067B05B7/10
Inventor G·戈瓦索L·兰伯特P·普罗瓦内
Owner EXCEL IND INC
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