Violet DQ8C saddle stitching linkage line cutting troubleshooting method
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For the DQ8C saddle stitching line cut out the book appeared the front mouth groove, the middle knife retraction and the convex post and so on, we have carefully studied the cutting part of the DQ8C three-sided knife. It is believed that after the 4 posts and 32 open double books have been ordered by the stapler, the back of the book is arched, and the transfer belt and the brush are pressed on the three-sided knife. , affecting the quality of the finished book. When the book enters the middle cut, there is a lot of space on both sides of the knife. When the middle cuts the book, there is no book press, which makes the back of the book unreal and easy to bow. The back of the book is higher, and the finished book has a retracted and embossed post. After the book is picked up, the phenomenon of retracting and embossing is particularly obvious. After the middle knife and the side knife cut the book, the book is transmitted to the front mouth cutting part through the transmission belt. When the door knife cuts the book, the book is also pressed by the transmission belt and the brush. The book with more than 6 posts is ordered by the stapler. After the nails are passed, the conveyor belt and the brush can not be pressed at all. If the brush is too tight, the book is not in place.
Therefore, we add two sets of book pressers on both sides of the reciprocating lifting cutter holder of the middle knife, to ensure that the knife in the three-sided knife is in the book cutting, the book press on both sides of the middle knife first presses the book, so that it is flat, no bow From the beginning, the book is not loose when the book is cut. The specific method is: the knife seat of the middle knife is removed, and the plane on the planer base is used as a reference, and the two sides of the protruding part (the knife part) are cut out to a vertical plane of 60 mm in width to ensure the pressure. The cutter is perpendicular to the cutter of the middle knife. One side of the middle knife is fixed on one side and fixed by screws. After adjusting the position, the positioning pin hole is put on and the positioning pin is installed to ensure the convenient assembly and disassembly. When the book presser works with the middle knife, the book presser first presses the signature, and then the middle knife cuts the book. After the book press is adjusted and positioned once, there is no need to adjust it. The middle knife presser is composed of a guide bracket, a guide rod, a left and right press block, a spring, a nut and the like.
The door knife presser is mounted on the reciprocating lifting seat of the door knife and protrudes outward from the bow shape. When working, the book presser first presses the back of the book, and then the front part of the book presser presses the book again, so that the book is flat on the back of the book when the three sides are cut, and does not bow, ensuring that the book is not cut before the cut. slope. Then, the concave part on both sides of the door of the door knife is milled on the milling machine with a long groove of 25 mm wide and 8 mm deep, and two supporting plates are installed to ensure that the sides of the book are not recessed when the book press is pressed, thereby causing the groove. When installing, first adjust the book presser in the front part, and then adjust the book presser in the back position. The book presser at the back of the book is lower than the book press of the front mouth part 3 to 4 mm. The back of the warranty is first compacted and then the front part is compacted. The book presser at the back of the book is reciprocated up and down along with the book presser at the front mouth. After one-time adjustment and positioning, there is no need to adjust. The book presser at the back of the book consists of a fixed bar, a short press block, a press block, a guide bar, a guide bracket, a spring, a nut, a pin, a support, a screw, and the like.
More than a month of production practice has proved that after the increase of the book press, the quality problems of the front mouth groove, the middle knife shrinkage and the convex post are solved, the quality of the finished book is improved, and the guarantee for the production of high quality riding books is guaranteed.