Design of small film bag packaging for rice

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Design of thin film small bag packaging for rice Senba company, located in California, USA, is the branch of Japanese food giant Senba Food Co., Ltd. in the United States. The factory was put into operation in 2001. It is engaged in the processing business of its own brand products and specializes in producing Asian food for retail, wholesale, food service and industrial users. The facility of the factory has passed the certification of QAI organization and the certification of Jewish food production. One of the main packaging lines in the factory uses the twb1 vertical forming/filling/sealing machine produced by Tokyo automatic machinery works

this vertical forming/filling/sealing machine is equipped with a double port hopper produced by spee Dee Packaging Machinery Co. (), which combines the spee dee3500 digitronic screw propeller with the volumetric cup hopper, and uses several volumetric cups to distribute the product by a rotary indexing disc. Both devices are controlled by a programmable logic controller and a touch screen located in the electrical enclosure, and both are equipped with an ecodrive digital AC servo system. The system has high-resolution feedback and can accurately control the position and speed of MKD rotary servo motor. These systems are provided by Bosch Rexroth (). With the help of a double port funnel, Senba can simultaneously put two different products into the same small bag. The advantage of this method is that various components can be mixed during filling without delamination during separate filling. The system was originally installed to operate the pastry mixture and chocolate chips. The pastry mixture is distributed by the screw propeller and the chocolate chips are distributed by the cup funnel

before manually packing the bag, it shall pass through the metal detector and the check weight scale

as independent components, the screw propeller and the cup-shaped funnel can be installed by measuring their output voltage respectively, and then integrated with the control equipment of the bagging machine. The synchronization between the two filling systems and the bagging machine is very critical, especially when the running speed is high. Because if two ingredients such as rice and spices fall at different speeds, problems will arise. The product is sent to the hopper by the vibrating conveyor of Eriez ()

during the visit of PD magazine, the production line was processing 2 pounds of bagged fragrant rice for lotus food company. After the bagging machine sends a product request signal to the hopper, it starts a working cycle. This signal triggers the screw propeller and hopper to work, so that the product will fall into the bagging machine through the pipe after distribution. The back of the machine is equipped with a film, which can be pulled out to cover the floating roller for tension control. The film is then pulled down onto the forming ring through the top of the machine and onto the vertical sealing rod by two traction belts. The belt moves inward, and the film is pulled down at the moving part of the working cycle to make the film cling to the filling tube. When the product is filled, it leaves the pipeline during the static period of the cycle

after unloading the product from the hopper, send a confirmation signal to the bagging machine to prove that the request sent by the bagging machine has been received and the product has been unloaded. The funnel is instructed to pull the membrane. The signal exchange between the bagging machine and the screw propeller can make the bagging machine work in the "request action" mode. That is, if the funnel does not distribute the product, the film will not be pulled out and the packaging bag will not be generated

when the film traction is completed, the final sealing mechanism of the bagging machine begins to close. The closing actions of film traction and final sealing mechanism are completed at fixed time, and fault analysis: there is a slight overlap in time. In other words, the sealing claw starts to close when the film moves, but does not reach the closed position until the film has stopped moving. This reduces the completion time of each step, thereby increasing production. After the final sealing is closed, it is necessary to wait for a period of time for heat sealing. When the heat sealing is completed, the cutter starts to move to cut off the newly formed package

the film enters the horizontal forming/filling/sealing machine, folds at the bottom, and then generates each small bag by the vertical sealing rod

(to be continued)


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