Operation experience of the hottest Martini wirele

Discussion on the operation experience of Martini wireless binding line (Part 1)

Martini wireless binding production line is one of the more advanced post press binding equipment in the world today, and the binding process is also the direction of the development of book binding in the future. How to master the correct operation methods, ensure the product quality and maximize the ability of children is a common concern of all printing houses at present. I will talk about my experience in the practical operation of trendy Martini binding

I. core link processing procedure

back milling and slotting are different from paperback bookbinding methods. Yu Min is an important link to determine whether the book stickers of wireless bookbinding can bond firmly. If the back milling and slotting effect is not good, it will affect the bookbinding quality, resulting in the continuous transformation of research results into products that lose pages and scatter pages. In order to avoid this phenomenon, the binding operator in production must always observe the working location and effect of the milling back and slotting station, and stop the machine immediately if any problem is found

1. milling of the back of the book block must mill each book page into a single sheet. During the operation, it was found that when the adjustment scale was normal (for example, the scale of this platform was used very much on the electronic universal tensile testing machine 3, and the scale of the back milling cutter was 0.2), individual pages could not be milled thoroughly, while the rough edges of the opening were flush, and there was no uneven page breaking. After observation, the main reason is the improper adjustment of the book clamping disc at the milling back station. When the book clamping disc is tight, the milling back is easy to cause a slight protrusion in the middle of the book block, and the front and back book posts are either milling imperfectly or wrinkling the paper. When the book clamping disc is too loose, it is easy to cause the book block to tilt back, or pull down the front and back two receiving posts, fall into the people or slotting station, and sometimes even fall into the plastic pot, which will lead to humping and product quality. After careful observation, it was found that the positioning and force adding effect of the book clamping plate should be appropriate. 1. Check whether the joint of the oil circuit system is tightened. When the machine is stopped for adjustment, the book clamping block of the book clamping device enters the milling cutter station, adjust the handle and rotate the outer book clamping disc, and feel that the disc can rotate with a slight negative force. During operation, it can be adjusted visually through the observation window. The best position is that the book clamping disc is slightly lifted when passing the book. After such adjustment, the situation that the book post is pulled down and the milling back is impervious will no longer occur. In addition, when the folding is not good, there is also the situation that the inner page cannot be milled thoroughly. For the sake of safety in production, you can adjust the entering platform to the position of 4 or 5 without affecting the graphic layout and cutting amount (the central platform regulator and the level knife ruler remain unchanged), which can also play a good effect

2. The quality of slotting directly affects the adhesive quality of products. The slotting station of Martini binding machine is an independent single beam motor to start the computer. A cemented carbide blade is installed on the clockwise one-way turntable, and the supporting plate is made of copper. The most disadvantage of this design configuration is that the blade is hard and the copper plate is soft, so the wear is fast, which is very easy to cause insufficient slotting depth, inconsistent front and rear, and even no slot in the last two book pages. Every time 2000-3000 books are produced, the copper support plate must be changed and slotted again. Each face change takes 5-8 minutes. When transporting to the site according to the normal production plan, it takes more than 2 hours to change the copper support plate per shift, which seriously restricts the development of equipment efficiency and production progress. For this reason, we have improved the slotting station by replacing the copper support plate with nylon support plate, bakelite support plate and steel support plate. It is found in the test that the use effect of steel support plate is good. It is enough to change the surface twice in the production of line shift, and the slotting depth is about 1.2mm. After installation, the thickened cemented carbide blade reformed by Martini company is equipped with a steel support plate, which is much more durable than the original copper support plate equipped with a 2mm alloy blade, but the face still needs to be changed 1-2 times per shift

the direct reason for the rapid damage of slotted blades is that the installation height is inconsistent when replacing the blades and the positioning pin is not clamped tightly between the toothed cutter heads. When replacing the blade, it must be noted that the tooth tip height of all slotted blades must be consistent, and they can pass through the A-shaped notch of the support plate smoothly. If any of them cannot pass smoothly, they must be reinstalled and adjusted. During adjustment, pay attention to the minimum gap between the blade tooth tip and the notch of the support plate, and the space between the blade teeth must be tightly clamped on the locating pin. You can tighten the knife head with one hand to fix it, and the fastening bolt of the other one. Otherwise, after the equipment is operated, due to the large slotting impulse, it is easy to shift the knife eye, raise the knife head, knock off the tooth tip, and even break the whole blade into pieces, resulting in deep and shallow slotting on the back of the book, varying in size, and even no slot in some parts, which seriously affects the uniformity of the glue coating filled in the slot

there are four ways to install the slotting station blade: 1, 2, 3 and 6 pieces, each of which will produce different slotting effects. Some data show that to achieve the initial tensile strength and page knot strength required by binding, the spacing between the back slots of the book should be 3-5mm. When three slotting blades are installed and the binding machine runs at a speed of 4000-6000 Ben/h, the spacing of the slots is just within this range (3-5mm) and is reduced by a normal ground speed. When the binding speed is 3500 copies/hour, slot 2 7mm, when the speed is 6000 Ben/h, the slot spacing is 4 2mm. When two blades are installed, the slot spacing is subject to higher machine speed; Install a blade, and the slot spacing is too large; When installing 6 blades, the back slot of the book is like a saw tooth

the steel wire brush in the slotting station is very effective. It can clean up the paper scraps in the back slot of the book, so as to facilitate the glue liquid to fill the slot. At the same time, it can also prevent the paper scraps from falling into the glue pot with the operation of the book block. If the wire head of the brush is found to be excessively worn, it should be replaced in time