In the mass production of woven bags, the core common problems restricting the quality of the bags are skewed opening, uneven size and body width bags. Traditional bagging machine relies on roller to drag feed, which causes uneven fabric stress and uncontrollable tension, which leads to molding errors and makes it difficult for finished products to meet the requirements of automatic filling, neat stacking and standardized transportation. The packaging bags produced by the non-extendable flat bag machine has a flat opening, uniform size and no width error. It is the equipment of choice for the production of high end industrial flat bag, laminated feed bags and color printed packaging bags. Its high precision molding effect is not the result of single component optimization, but the synergy of the whole mechanical structure, control system and molding process.
Tensionless flat structure is the core of eliminating width deviation in the whole feeding process. Traditional bagging equipment is used to transport fabric in a suspended manner, relying on external forces for traction. Woven and laminated fabrics stretch in one direction, causing horizontal shrinkage and vertical elongation, directly causing uneven bag width. The non-stretchable flat-bag maker comes with an integrated panoramic drop platform that fully supports the fabric throughout the process, allowing it to travel at constant speed in natural flat-pull and zero-pull conditions, completely eliminating the tension difference. Fabric warp and weft structure maintains the original regular state, no local shrinkage or stretching deformation, eliminating the problem of uneven width of cloth bag from the source of production, ensuring the uniform width of each packaging bag, regular pattern.
The high-precision multi servo synchronous control system is the key configuration to realize high precision dimensions. The operation speed of ordinary bagging machine is out of sync, there is time difference between feeding, stopping and cutting, it is easy to lead to too much or too little feeding, leading to large error in the length of the finished product. Extensionless bag making machine adopts multiple servo motors to combine and close loop control, which can match and synchronous operation the feed, positioning, stop, cut and seal the whole process. The system can adjust the transmission speed in real time, control feeding length accurately, control the error of batch production in a very small range, and completely solve the problem of non-uniform size in traditional equipment batch production, and meet the strict precision requirements of industrial standardization.
Intelligent positioning correction device to effectively avoid the defects caused by the opening fabric deviation of the cloth bag. In the process of fabric transportation, a slight deviation will lead to bag opening skew, bag edge uneven, affecting the appearance and effectiveness of the finished product. The device is equipped with an automatic correction system, which can dynamically monitor the running trajectory of fabric in real time. Once the material deviation is detected, the guide rail position will be automatically adjusted to correct the conveying trajectory in real time, ensuring that the material is always in the central straight transport state. Complete elimination of the whole process of bias, dislocation, bias and so on, so that the bag mouth horizontal, vertical, smooth edges, no burrs, no tilting defects.
Synchronously follow the hot seal cutting process to ensure that the opening of the bag is smooth and not deformed. Traditional bag makers first stretch and shape, then cut and seal the edges. Stress exists inside the fabric, which can cause rebound and shrinkage after cutting, causing the opening of the cloth bag to bend and size deviation. The non-tensile equipment adopts synchronous cutting and thermal sealing tracking process, and the fabric can be positioned, heated and cut instantaneously without stress, leveling and stretching, with zero delay in connection. The pressure on the sealing end is uniform, the temperature is uniform, and there is no local overheating shrinkage or edge tilt. The formed bag mouth smooth and straight, with smooth lines and even edge width, which greatly improves the regularity of the finished product.
Precision mechanical calibration and reinforcement of the structure, long-term stability of production accuracy. The whole equipment adopts high strength rack structure, no vibration in the process of use, avoiding cutting deviation caused by mechanical vibration. It is also equipped with adjustable, precise limit mechanism that allow workers to lock in precise size parameters according to production specifications. Parameters do not deviate in the operation of the equipment, and the accuracy of long-term batch production is stable. Even if continuous mass production occurs for a long time, there are no problems such as size drift, bag mouth deformation, width deviation, yield rate.
In conclusion, a high-precision forming system is constructed by five core designs of the tensionless flat bag machine, such as tensionless feed, servo synchronous speed control, automatic calibration and positioning, synchronous cutting and sealing, and stable mechanical structure. We will completely solve the pain points of deformation, deviation and dimension error in traditional bag-making process, and steadily produce high-quality woven plain bags with flat bag openings, standard size and uniform width, so as to meet the production needs of high-end feed packaging, brand color printing packaging and industrial precision packaging packaging, so as to provide strong support for enterprises to improve product competitiveness and reduce product losses.
