The square bottom machine is mainly a bag making equipment used to produce valve bags made of kraft paper. It is mostly used to produce a square bottom valve bag, such as packing cement, mortar, grain and other granular live powder materials. It can complete 60-120 valve pocket bottom paste work per minute. Let’s take a detailed look at the production process of the square bottom machine.
1. The structure of the square bottom machine
(1) The steel plate of the main engine head adopts 45# steel plate with a thickness of 40mm;
(2) The structure of the discharging component adopts 12mm thick steel plate, and the surface is treated with 3 layers of paint;
(3) 120# channel steel is used for the intermediate support;
(4) The coil unwinding unit adopts air-expanded shaft core: 4 sets (45# steel; the surface is quenched by this high frequency; the bearing weight is 1.3 tons);
(5) The structure and parts of other mechanical parts are made of 45#, A3, cast iron and so on.
2. Features of square bottom machine
The pressure line and opening can be adjusted online; the valve strip and the internal and external reinforcing strips adopt servo feeding device, which can be adjusted online, and automatically stop feeding when there is no material, saving raw material waste; cutting knife and opening device, no consumables, no need to replace the rubber. With man-machine interface adjustment (touch screen), frequency conversion speed regulation, high-precision servo control system, PLC programming control system, automatic counting, output and so on.
The control system is simple and convenient to operate: automatic stop of the coil machine; automatic color mark tracking function; automatic gluing; forming;
3. The production process of the square bottom machine
The square bottom machine is an integrated linkage production line, which can make the bottom of the bag at both ends and the valve port pasted at one time. It consists of rotary automatic feeding, arranging and positioning system, finishing and imprinting system, bag bottom forming system, bag drum transmission system, opening and shaping station, double-layer valve sheet production and automatic glue application, and bag bottom reinforcing paper strip , bag bottom turning station, large S-shaped walking route into bag compression and clamping output system, intermittent counting and finishing system and electrical control system.
Its technological process includes: unwinding, automatic paper feeding and layered guidance, automatic deviation correction, auxiliary traction, virtual cutting, hot pressing, bag tube forming, traction, piercing and venting, tearing, and separating bag feeding (bag tube conveying, The bottom of the bag is opened), the valve strip is pasted, the glue is automatically applied, the bottom is formed and the bottom is turned, the bottom of the bag is turned over, the counting is grouped, and the stacking is performed.
The above is the introduction of the production process of the square bottom machine. The main function of the square bottom machine is to cooperate with the paper tube machine to produce valve pockets. We Huatian have rich experience in the production of square bottom machine and paper tube machine.