Spray Painting Production Line

Painting Production Line for plastic products fully automatic type help you increasing production capacities, save labour, making top quality painting for your plastic products. 

Plastic spraying workshop process:

Production items preparation-------Surface treatment before paint spraying-------Spindle installation------- manual electrostatic dust free------- transfer items-------auto electrostatic dust free ------ base coat spraying------ baking------ screen printing/transfer printing/Laser etching------- top coat spraying------baking------UV curing/PU cuing------loading------full inspection------spray label------packing------IPQC confirmation------finished goods to warehouse.

Production preparation: material to receive, receive paint and deployment, the second rule of processing, the production of consumables and labor insurance supplies receive
 Pre-spray surface treatment: Use white oil (or alcohol) to remove the surface oil, dust and other materials, oil and dust from the material injection mold release agent and in the process of transport and inventory of dust. Some oil, dust, if not removed, will directly affect the quality of sprayed products.
 fixture installation: fixture, including the second fixture (plastic dial) and a fixture (direct contact with the workpiece that part).
Spraying products usually have two sides, one side requires painting, the other side can not be stained with paint, or to determine the bad product. A fixture in addition to playing a fixed role of the workpiece, but also play to prevent the paint sprayed to those parts can not be coated with paint, so a fixture design to consider the specific product shape and requirements of different product requirements are different Governance. Secondary jigs play the role of connecting a fixture and a pipeline hanging column, the main part of which - the center of the turntable remains the same, and the connection part of a fixture designed to be removable, the specific arrangement of the number and Spacing depends on the size of the sprayed product. As the coating process in the coating, the fixture has a certain service life, after several production cycles, are required to scrap the old governance, updating the rule. Fixture installation refers to the workpiece to be sprayed along the corresponding direction with the fixture fixed on the fixture.
This process uses assembly line operation, the rule of installation can not be strong squeeze, to prevent deformation of the workpiece.

 manual electrostatic dust: to be sprayed products due to friction and other effects, may accumulate in the surface of some static charge. These electrostatic charge is the main source of some small dust adsorption. Manual electrostatic dust is the use of electrostatic air gun workers in the neutralization and elimination of static electricity at the same time rely on the role of wind to remove dust, in order to achieve the role of purifying the product surface. This process has a drawer cabinet, so that these removed the dust in time out of the workshop.

Transfer: This process is mainly to play the role of the product to be transferred to the on-line, that is, the product in the different transfer on the conveyor belt to improve efficiency. This process and fixture installation are used in the conveyor belt, which control the operation of the conveyor control panel can be activated to close the transfer operation and adjust its speed at the end of the conveyor belt is equipped with photoelectric sensors used to sense the workpiece in place, so as to achieve automatic control Operation and stop of the conveyor belt.
 upper parts: refers to the transfer conveyor belt has been installed on the work of the fixture removed after the fixed chain in the conveyor chain on the process
 Automatic electrostatic dust removal: In order to ensure the cleanliness of the surface of the workpiece during painting, this process has been added, the workpiece is sensed by photoelectric sensor, and the dust on the workpiece surface is removed again by electrostatic air gun.
• Primer Robot Spraying: The robotic spraying process is one of the core parts of the entire automated spray line. A production line is usually configured with two robots, respectively, with the end of the top coating. Primer robots, topcoat robots, automatic line control cabinet together constitute an automated production control system, through a variety of electrical signals between them for communication and coordination. According to the robotic arm on the number of guns caught, can be divided into single-gun, dual-gun spray and three guns. The robotic automatic painting system also includes an automatic paint sub-system. Baking: In order to speed up the drying of the paint, according to the paint used, set the appropriate oven temperature and baking time.
Silk screen printing
Laser carving: This process is optional process, that is, according to the specific requirements of the product. Mainly used in the surface of the workpiece printing or engraving text and graphics.
• Topcoat Robot Spraying: This procedure works in the same way as a primer robotic spray. Spraying the paint is mainly to improve the mechanical strength of the film, wear resistance, in addition to the film can improve the luster and color of the fullness of the decorative film to a higher, while the silk screen printing laser printing process Or carved text and graphics play a protective role.
Baking: In order to speed up the drying of the paint, according to the paint used, set the appropriate oven temperature and baking time. At the same time paint
In the polymer active groups, can be cross-linked when heated to form a network structure, thus accelerating the curing of the paint film.
 curing: in the spray finish varnish, the commonly used to light-cured coating. Initiation of coating with ultraviolet radiation polymerization film. Effect of film formation
It is directly related to the intensity of UV light and photoinitiator. Can be instantly dry products, saving time and space saving, the use of UV drying process to achieve high hardness, high gloss, abrasion resistance, solvent resistance effect.
 the next: will have a good spray products from the fixture removed, into the plastic disk. And the jig taken from the hanging column into the corresponding plastic box.
 All inspection: According to the product appearance acceptance criteria, the appearance of the off-line products shall be visually inspected, the good and bad products of the batch products shall be distinguished and the defective products shall be identified.
 Penma logo: Penma logo is to achieve product quality can be an effective means of retrospective management. The different products of the same batch can be distinguished by means of inkjet printing. If one day found a batch of product quality defects, we can quickly identify some of the batch of unqualified product recovery.
 Packing: It can be used as a protection means during the process of transferring products or parts between processes and workshops. Between processes and between the workshop is usually used in plastic packaging, pearl cotton, plastic boxes and other materials and tools.
 IPQC confirmed: before the finished product storage, the quality of IPQC sent to the finished product for re-sampling. Sampling after passing qualified label affixed.
 Finished goods warehousing: The material staff is responsible for transporting the finished product confirmed by IPQC to the designated discharge position of the warehouse, and hang up the material card to be identified.