Understand the pin glue injection process of system doors and windows
The so-called pin glue injection is actually two different concepts. The pin is an accessory, while the glue injection is a process. To understand these two concepts, we must first popularize the science of the link fastening method of the window, the window frame and The window sash is composed of four sides, and the link fasteners of the four-sided profiles are called corners (some are connected by screws). According to the different craftsmanship of the window, the corners are divided into active corners and overall corners. .
"Activity Corner Code"
The movable corner bracket is composed of two pieces, connected by screws, and has its own locator. It is simple and convenient to use, economical and practical. It is the most common connection method used in the door and window industry. However, the single screw used for the movable corner bracket is fastened. During transportation and during the use of the window, there may be loosening and misalignment, which will cause gaps and deformation of the window frame or sash. Over time, the airtightness, sound insulation, and wind pressure resistance of the window have all decreased. Therefore, on some high-end products, more advanced integral corners have begun to replace the movable corners.
"Overall corner code & pin"
As the name suggests, the overall corner bracket is a whole, without a locator itself, and needs to be fastened and positioned by two pins. The overall corner bracket has a strong structure and the pins are driven in by automated equipment. Compared with the movable corner bracket, the overall corner bracket + The pin connection method perfectly solves the problem of loose corner brackets and greatly improves the performance of the whole window. At this point, do we understand that the pin is actually an accessory for the connection and fastening of the overall corner bracket and the profile. In other words, the pin is actually a combination of a locator and a screw, that is, to locate the diagonal code, and at the same time, it can be connected and fastened like a screw, but the stability performance is far superior to that of the screw and the locator.
"Glue injection"
Glue injection is a special glue used for filling between the corner bracket and the profile. The professional name is group corner glue, just like the traditional mortise and tenon joint structure of Chinese furniture. Before the connection, it is often painted on the contact surface between the tenon and tenon Applying carpentry glue can make the link more solid, even if it is hit by impact, and it can be made more sealed by filling. The glue injection of doors and windows is the same as the carpentry glue of traditional Chinese mortise and tenon structure in terms of function. , It is also to improve the stability and sealing of the windows, but the glue injection process of the doors and windows is more professional.
Theoretically, both movable corners and integral corners can be injected with glue, but in actual production, doors and windows injected with movable corners are rare, and doors and windows with integral corners and pins are generally high-end products, pursuing more excellence Therefore, the overall corner code plus pins are usually injected with glue to improve the service life of the window, and at the same time, the sound insulation, heat insulation, and wind pressure resistance of the window are correspondingly improved.
