Variable-density square frame beam metallic combination reed

The invention discloses a variable-density square frame beam metallic combination reed, which is characterized in that a plurality of unit reeds in different density specifications are parallelly arranged in a square hollow casing pipe of a reed frame according to the design requirements of warp density; two ends of the casing pipe are screwed to be fixed by a bolt; each unit reed is a short reed which is demountable, and equivalent in height; two ends of the frame beam of each unit reed are flat-top ends; and the adjacent unit reeds are butted by the flat-top end. The variable-density square frame beam metallic combination reed provided by the invention is not only suitable for producing various variable-density textiles, but also suitable for balancing on-loom density textiles and off-loom density textiles; and meanwhile, a structure of the reed is easy to assemble, disassemble and reassemble, and is suitable for low-volume production of the textiles in various varieties. Compared with the traditional reed in fixed density, the variable-density square frame beam metallic combination reed provided by the invention can be well suitable for the requirements of market variations; and the unit-combined variable-density reed is simple in structure, reasonable in assembly, convenient in dismounting, and is also suitable for standardized manufacturing and production of accessories.