Utility Model Patent: An Upper-Bagging Mechanism for a Packaging Machine

The “Bag-feeding Mechanism for a Packaging Machine,” independently developed by Hunan Fumaco Food Engineering Technology Co., Ltd. (Utility Model Patent No.: ZL 201620018970.9), was filed on January 8, 2016, and officially authorized by the National Intellectual Property Administration on September 7, 2016. The successful approval of this patent represents authoritative recognition of the company’s strong R&D capabilities in core functional components for packaging machines, highlighting the company’s innovative focus on deepening its expertise in food packaging equipment and perfecting its core supporting system for packaging production lines.

This patent addresses the core pain points of traditional packaging machines, including low bag-loading efficiency, inaccurate bag-positioning, frequent bag jams and leaks, and heavy reliance on manual intervention. It innovatively adopts an integrated structural design featuring “vacuum suction for bag retrieval combined with precise guiding for bag feeding,” thereby achieving an automated and stabilized upgrade of the bag-loading process in packaging machines. The mechanism is equipped with multiple adaptive vacuum nozzle modules, paired with a servo-driven horizontal bag-transfer mechanism. By leveraging photoelectric sensors to precisely locate the position of each packaging bag, this design ensures that the bag-retrieval action is both accurate and highly efficient, effectively preventing bag damage or detachment—a common issue associated with conventional bag-handling methods. Additionally, the bag-feeding channel incorporates adjustable guide side plates and flexible limiting components, allowing for flexible adjustment of spacing according to different bag specifications. This guarantees that bags maintain a neat shape and move smoothly during the feeding process, providing a stable material orientation that ensures smooth subsequent operations such as bag opening and filling.

The parts that come into contact with materials and packaging bags are made of food-grade stainless steel and flexible, wear-resistant materials. The surfaces are polished to eliminate any sanitary dead spots and feature modular disassembly and assembly capabilities, making cleaning and maintenance exceptionally convenient and fully compliant with the clean production requirements of the food industry. Thanks to its parameterized design, the system can quickly adapt to the bagging needs of pre-made bags in various sizes and materials, offering excellent compatibility.

This technological achievement effectively replaces the traditional semi-manual bagging method, significantly reducing labor costs, enhancing bagging efficiency and pass rate, and further strengthening the company’s technological foundation in the core components of packaging machinery. It provides food processing enterprises with a highly efficient, precise, and reliable automated bagging solution, thereby supporting the full-process automation upgrade and market expansion of packaging production lines.