Successful trial operation of the semi-automatic sorting system of Nanchang Postal District Central Bureau
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On June 10, the flat letter, flat brush centralized dismantling and flat brush semi-automatic sorting system jointly developed by the Nanchang Postal District Central Bureau and the Shanghai Post Technology Research Institute began trial operation. Since the trial operation for 3 weeks, the system has been operating stably, and the labor intensity of the production personnel has been significantly reduced. “This is great! After standing for so many years, I can finally sit and sort!” At the flat brush mail sorting site, sorter Li Hong told the author, “Now the central bureau divides about 60,000 flat brushes every day. Previously, all mails were handled manually. One person had to bend at least 300 times a day, lift mail 50 times, push and pull mail bucket 100 times, and the labor intensity was relatively high. After the system is running, the equipment can handle flat mail 1 hourly. Ten thousand pieces, the sorting method has also been changed to sitting on a chair, which is much easier than before!”
According to reports, this set of flat brush semi-automatic sorting equipment covers an area of 576 square meters and is distributed in a U shape. It is mainly composed of a transmission system and a sorting system. There are three areas of disassembly, coarse separation and subdivision. The front end of the equipment is composed of two gantry cranes to form a dismantling area. The corner of the total bag is clamped by the climbing belt conveyor and the clamp on the gantry crane to a certain height, and the mail is opened and dismantled. The unpacked mail is conveyed to the coarse partition by a belt conveyor. There are 8 sorting tables in the coarse zone, and 5 sorting turnover boxes for each seat. The turnover boxes are marked with codes 1 to 5, which correspond to the addresses of the subdivision zones. The rear end of the sorting equipment is composed of 5 subdivided seats, 1 rejecting table, 2 layers of buffer storage system, and 2 elevators. After coarse division, the turnover box filled with mail is automatically transferred to the corresponding subdivision table (weighing at the same time) through RFID (Radio Frequency Identification). Each subdivision table is set with 20-30 sorting directions, and the operator will finally sort the mail into the mail bag.
According to the technical staff, the whole set of equipment was originally scheduled to be installed within 30 days, but it actually took 56 days. This was mainly due to the addition of some user-friendly designs during the installation process. For example: add baffles on both sides of the coarse sub-table to prevent workers from being scratched by the machine; change the position of the power control switch for easy operation. (Zhang Xianlan)
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