Chain for three-dimensional transfer line

A conveyor chain for three-dimensional conveyor line, in which a plurality of chain links each with a top plate provided on a link body thereof is connected endlessly to each other by shaft pins for three-dimensional conveyance of products, wherein:

• the link body includes a projecting head portion projecting forward and having a bearing space defined by a curved inner wall, and a pair of leg portions projecting rearward;
• the leg portions in pair of one chain link have the shaft pin penetrated and fixed across them and the projecting head portion of a next chain link is disposed between the pair of leg portions;
• the projecting head portion is shaped to freely be pivoted vertically about, and horizontally of, the shaft pin;
• the top plate includes a front plate portion and rear plate portion, formed by dividing the top plate along a parting line being a semicircle whose center is laid nearly at the center of the projecting head portion in such a manner that the front plate portion has a generally semicircular shape while the rear plate portion is concave at the front end thereof correspondingly to the semicircular shape of the front plate portion;
• the rear plate portion is integral with the rear upper portion of the link body while the front plate portion has on the lower front side thereof a bearing block projecting downward and which is received in the bearing space of the projecting head portion;
• and
• the bearing block has the shaft pin penetrated through it so that the bearing block is prevented from being disengaged from the bearing space and the rear plate portion can be pivoted to the right and left of the front plate portion.