A sixteen-fold knife mechanism of a folding machine

Abstract

The invention discloses a sixteenmo folding knife mechanism of a paper folding machine. The sixteenmo folding knife mechanism comprises two sun gears, two planet carriers, two hollow big gears, two planetary gears, two pinions, a power mechanism, two swing arms and a folding knife. The two sun gears are installed on a driving rotation shaft and a driven rotation shaft through a pair of bearings and are fixed into two through holes of a fixed plate separately. The two planet carriers are fixedly arranged on the driving rotation shaft and the driven rotation shaft. The two hollow big gears are fixedly arranged on the two planet carriers in a sleeved mode and are engaged with the two planet carriers. The two planetary gears are installed on the two planet carriers through a pair of bearings separately and are further engaged with the two gun gears. The two pinions are fixedly arranged on two central spindles in a sleeving mode and are further engaged with the two planetary gears. The power mechanism is connected to the rear end of the driving rotation shaft. The rotation centers of the two swing arms are installed on the central spindles of the two pinions. The folding knife is hinged to the outer ends of the two swing arms. According to the sixteenmo folding knife mechanism of the paper folding machine, fold position accuracy can be guaranteed, and meanwhile noise and vibration can be reduced.

Description

technical field [0001] The invention relates to a book machine, in particular to a sixteen-fold knife mechanism of a folding machine. Background technique [0002] With the development of technology, the printing quality of books and periodicals has been continuously improved, and the market has put forward higher requirements for the accuracy and speed of book folding. In the past, the creases of the sixteen-fold pages of books and periodicals were realized by a machete mechanism. The machete mechanism is controlled by the cantilever to reciprocate the folding knife up and down. The movement track of the folding knife is arc-shaped. When the folding knife touches the stickers, it is at a non-perpendicular angle, which makes the position of the crease deviate greatly and the accuracy is difficult to guarantee. And this machete mechanism, because the cantilever swings back and forth at a high speed, is easy to generate noise and vibration, which also affects the improvement ...

AI Technical Summary

Problems solved by technology

The machete mechanism controls the reciprocating movement of the folding knife up and down by the cantilever. The movement track of the folding knife is arc-shaped, and the contact between the folding knife and the sticker is at a non-perpendicular angle, which makes the position of the crease deviate greatly and the accuracy is difficult to guarantee.

Moreover, this machete mechanism is prone to noise and vibration due to the high-speed swing of the cantilever, which also affects the improvement of folding speed and accuracy.

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