Category: Tutorial

No matter how you compare from various robot solutions, global robot precision speed reducers are basically monopolized by Japan. In recent years, although there are other RV reducers, rarely used by robot companies like us. As a traditional manufacturing powerhouse, reducer products in Germany, Italy, Japan are leading the industry in terms of materials, design level, quality control, accuracy, power density, reliability and service life. In the field of mechanical transmission, reducer is an intermediate device that connects the power source and actuator. Usually, it uses the high-speed power of the motor and internal combustion engine to engage the large gear on the output shaft through small gear on the input shaft to reduce speed And transfer more torque. Driven by the development of aerospace, robotics, and medical equipment, the…

The work principle of electrostatic powder coating is almost the same as liquid electrostatic coatings, except that powder spraying is dispersed not atomized. It is a coating sprayed by an electrostatic powder spray gun. While dispersing, the powder particles are negatively charged. The charged powder particles are processed by air flow (or other forces such as centrifugal) and electrostatic attraction to be coated on workpiece. Then heated to melt and solidify to form a hard film. Electrostatic powder coating is primary choice for lost of hardware coating projects. Electrostatic Powder Coating Advantage Electrostatic powder coating is popularly known as "plastic powder spraying". Electrostatic powder coating is powered by a coating machine with an atomizing nozzle (to atomize the powder) and a discharge level (to generate electricity and current) to atomize…

In plastic painting line system, flame(or flamming) treatment is a popular setup to meet with high end painting requirements over different plastic materials. Especially for PP plastic, flamming is a must process for guaranteed contact to coating film. In this article we will introduce why it's important and how it works. Flame treatment refers to the process of oxidizing plastic surface with a strong oxidizing flame. It is mainly used to improve the painting characteristics and adhesive characteristics of polyolefin plastics. The technique is to increase surface activity and increase the primer adhesion to workpiece surface. Definition In order to facilitate the foaming compounding process, plastic surface tension value must meet the production requirements, surface tension value is generally required to reach about 41 dyne. However, polypropylene material surface tension…

UV painting is the most popular technology in lots of industries for various products surface finishing. Unlike most other type painting line system that can be easily operated, UV painting line has extremely high cleanness requirement. Not only to machine itself but also entire workshop construction. For some high end production requirements, the painting line clean room setup is same as medical grade. In this article we will indepth describe the operation process flow and some crucial parts technical configuration. Above is a typical UVpainting line layout for plastic vacuum metalization paint shop. Following is detailed process description NO. Content Method TEMP,℃ Time  NOTE 1 Load workpiece to fixture Manual RT   Fix product on custom jig 2 Load fixture to conveyor Manual RT     3 Electrostatic dust leaning…

Plastic metalization are often processed through uv painting and vacuum coating for various metal materials. UV painting and vacuum metalizing are two crucial steps to get perfect metal surface on plastic. To deal with different evironment requirements, we often need to apply various tests on plastic surface. That means we must choose a propriate technique to handle with. In this article we'll introduce the used technologies and compare the difference and advantages of the two vacuum coating solutions. UV Painting UV painting includes both base coat and top coat. Before vacuum metalizing, we must apply uv base coat first to get guaranteed contact between plastic and metal layer. Following is a typical chart of uv painting line system configuration. This design is workable with different plastic materials such as ABS,…

UV coating is featured for its low-temperature and rapid curing, thus it's ideal choice for automatic high-speed mass production requirement. UV paint provides extremely high gloss varnishing and widely used for various products including metal, plastic and woodware. Especially for plastic vacuum metalization, uv is always top class choice. In this article, we will briefly introduce UV coating application process and trouble shooting cases. UV painting line process flow The UV painting line process is as follows: Product loading Operators manually put the workpiece on fixture from loading area, chain conveyor passes through each functional part of the production line in turn. Preheat The purpose of preheating is to make sure product is completely dry for next surface treatment. If not, it may result in various finishing issues such as…

The application of automatic spraying system has become an important factor to measure the level of the coating production line. Automatic electrostatic spraying is one of the widely used spraying systems. The setting of process properties directly affects the coating quality. This article takes automatic electrostatic turbo bell coating as an example to find the influence of various process parameters in coating application. 1 - high voltage value of atomizer The principle of electrostatic turbo bell coating is by atomized paint thrown out through the edge and center of bell rotating at high speed, forming a cone-shaped atomized substance under the action of shaping air and high voltage, the workpiece is grounded, and the paint particles are charged with an electrostatic charge. Under the action of the electrostatic field between…

The Air-Operated Diaphragm Pump (AODP) is the most popular and cost-effective paint pump for coating applications. The flexibility of this configuration often creates some confusion when selecting a pneumatic diaphragm. In each application, different pump materials are suitable for a variety of factors such as pH, abrasive, temperature and fluid density. It is important to check the manufacturer's specifications and chemical compatibility guidelines before purchasing or operating. I - control corrosion When configuring a pneumatic diaphragm pump, it is a challenge to specify the pH of the safe handling chemicals and fluctuations in different concentrations, requiring proper selection of the pump components and pump body to ensure compatibility, avoid pump corrosion and reduce maintenance time. In applications where pH changes or when chemical concentrations may vary, plastic pump bodies such…

There are many different processes for plastic painting over different materials such as nylon, PP, PET, etc., In order to reach the best quality, we must apply necessary pretreatment in advance. In this article we'll briefly introduce popular 4 types pretreatment for plastic painting system, that is removal of internal stress, cleaning, de-dust and solving the problem of coating adhesion on plastic material. 1. Removal of internal stress Plastic products are prone to internal stress during molding injection, and stress concentration is very likely to occur during painting process, resulting in cracks in plastic parts. Flamming or full-face treatment can be used to eliminate stress. Flamming treatment is quick and direct fix (popularly used for car parts coating such as bumper). We can also heat the plastic part below the…