What is the injection molding process for aluminum door and window pins?

We always subconsciously pay attention to the quality and price of large products such as door and window profiles, hardware accessories, glass types, etc. when choosing doors and windows, but few people pay attention to the splicing method of door and window corners. In fact, the strength (such as wind resistance) and stability of doors and windows themselves are not only related to the door and window profiles, but also closely related to the door and window assembly process.

01

What is the process of door and window corner assembly?

The process of door and window corner assembly, also known as corner connection process, requires a complete door and window to be assembled from frame and leaf structural profiles. The key to connecting profiles lies in the splicing of their corners (i.e. riveting two profiles together at a 90 ° or 45 ° angle using corner brackets). The function of corner assembly is to increase the corner strength of doors and windows, maintain the stability of the basic framework of doors and windows, and enable doors and windows to cope with various impacts such as human activities, strong winds, and temperature changes. Generally speaking, the corner assembly process can be roughly divided into: movable corner code process, collision angle process, and pin injection process.

02

Activity corner code technology

The activity corner code technology is connected to the aluminum material through spring buckles, and then fixed to the doors and windows by tightening them with screws. The advantage of the activity corner code technology lies in its detachable installation, which is convenient, simple, and easy to assemble. The drawback of this process is that its connection is not tight enough and the sealing is average; Water ingress can easily cause the spring to rust, lose its elasticity, or break.

03

Collision technique

Corner collision process: Apply corner glue on the surface of the aluminum alloy profile joint, then insert the corner code into the 45 ° profile, and finally connect and form a whole through precision machine impact and extrusion. The advantage of this splicing process is its seamless connection and resistance to water ingress and cracking; However, due to the need for corner assembly during production, on-site framing is not supported.

04

Pin injection process

The corner code used in the pin injection process is composed of a corner code film made of nail handle material and a pure aluminum corner code with a thickness of 4.0-5.0mm. Therefore, this corner code has stronger toughness and stability. When assembling doors and windows, we often use more weather resistant corner adhesives to apply and seal to increase the overall strength of the doors and windows.