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Ma W.,Shanghai Tobacco Machinery Co. | Shi Z.,Shanghai Tobacco Machinery Co. | Zhang Z.,Shanghai Tobacco Machinery Co. | Wu J.,Shanghai Tobacco Machinery Co.
Tobacco Science and Technology | Year: 2017

YB618 carton overwrapper fails to empty timely at the time of machine failure, the cartons stacked in its carton elevating and film shaping device, which results in cartons with unsatisfied appearance and material waste. Instead of the stacking and elevating means, a"one carton one push"carton elevating device was designed. The new device took an independent servo motor as power source, timing belt and rack-and-pinion mechanism for power transmission. Cigarette cartons were elevated at regular interval under the cooperation of sliding guide and fixed guide. Meanwhile, a sixth side shaper was added. The results of application showed that the frequency of machine shutdown caused by carton elevating device decreased by 3 times/month, the amount of damaged cartons, the amount of defective cartons, and the proportion of cartons with appearance defects reduced by 68 carton/month, 67 carton/month, and 16 percentage points, respectively. The new device effectively promotes the efficiency of packing machines and improves the appearance quality of cigarette cartons. © 2017, Editorial Office of Tobacco Science and Technology. All right reserved.


Liu C.-J.,Shanghai JiaoTong University | Hu T.-Q.,Shanghai JiaoTong University | Wu L.,Shanghai Tobacco Machinery Co. | Shen L.,Shanghai Tobacco Machinery Co.
Shuidonglixue Yanjiu yu Jinzhan/Chinese Journal of Hydrodynamics Ser. A | Year: 2013

The process of the separation of the complicated particles in some industrial fluidized bed was numerical simulated by using the Lagrangian particle tracking multiphase method based on discrete multiphase model. Spherical particles were used to simulate the complicated particles. Rosin-Rammler distribution function and spherical shape factor were introduced to describe the difference of the physical properties of the materials. The inertial and viscous resistance coefficients were determined through comparing with the experiment's results. The particles' tracks and the separating phenomenon were simulated within the range of the given aerodynamic parameters and the influence of aerodynamic and structure's parameters were analyzed. Highly efficient separation was predicted through the optimization of the fluidized bed.


Wang W.,Shanghai Tobacco Group Co. | Bao J.,Shanghai Tobacco Machinery Co.
Tobacco Science and Technology | Year: 2013

For running carton overwrapper YB95A independently, the machine was retrofitted by adding power input device, carton conveying passage, electric control cabinet and control system, air circuit system and encoder. The results of application showed that the overwrapped cartons presented good appearance, the production capacity reached 25 carton/minute; only 2 workers were needed to conduct maintenance per shift, comparing with that only several thousands of cartons could be manually overwrapped in a shift by 36 workers. The working efficiency was effectively increased.


Guo J.,China Tobacco Machinery Technology Center Co. | Jiang W.,Tongji University | Wu X.,China Tobacco Machinery Technology Center Co. | Zhang D.,Shanghai Tobacco Machinery Co. | Huang Z.,Tongji University
Tobacco Science and Technology | Year: 2015

To solve the problems of cigarette jam and staggering falling in discharge channel of cigarette hopper in FOCKE 800 hard packer, the stirring device in cigarette hopper was modified via analyzing the factors, such as hopper shape and cigarette flowing, influencing cigarette falling. The four fixed deflectors were replaced by two round movable stirring parts, which were driven by the driving motor of original stirring rollers via a four-linkage mechanism, to stir cigarettes and split cigarette flow. The cigarette flow in cigarette hopper and the stirring action of stirring parts were simulated with a discrete element simulating model. The results showed that: 1) The established simulation model of virtual cigarette hopper met the actual requirements of cigarette flow, and the simulated results basically agreed with actual values. 2) The amount of distorted cigarettes reduced obviously once the stirring parts in cigarette hopper became movable. When the swing frequency, swing angle and running time of stirring parts were 1.6 Hz, 11.2° and 9.0 seconds respectively, the percentage of distorted cigarettes was minimized and decreased by 2.5%. Cigarettes in hopper move fluently, and the packer runs smoothly. The discrete element simulation model can effectively analyze the splitting status of cigarette flow in hopper and cut the cost and time for product research and development. ©, 2015, Editorial Office of Tobacco Science and Technology. All right reserved.


Liu W.,Shanghai Tobacco Machinery Co.
Tobacco Science and Technology | Year: 2013

Basing on the fact that out of parallel shafts setting will result in deviated running of toothed timing belt, pulley shafts were obliquely set with a pad to eliminate the deviated running of timing belt caused by belt defects in packet input device of FOCKE 750 packet overwrapper. The results of practical application showed that before improvement, the timing belt would deviate from one side of pulley to the other side after pulley ran about 10 revolutions, and the belt was obviously worn after running for 8 hours; while after improvement, the timing belt kept running centrically, its deviated running was effectively solved, and its working life was prolonged.


Yang X.,Shanghai Tobacco Machinery Co.
Tobacco Science and Technology | Year: 2013

For measuring the testing phase of glue applicator engagement during the electrical setting of blank unit in YB47 hard packer, a measuring device was designed according to the work principle and structure of the glue applicator. By finding out a reference benchmark, the device transferred the measurement of testing phase into measurement of the angle between test sensor and the benchmark. By means of infrared ray technology and electronic measuring element, the measurement of angle between two points, which were coaxial but not coplanar, was implemented and the angle value was converted into digital value for calculation and display. The results of practical application showed that the measuring device was simple and convenient in operation, the average time for phase measuring reduced from 14 to 4 minute, the reliability of setting results reached 100%. The device-measured phase could be used to determine whether the position of mechanical engagement point was correct, it ensured the normal running of glue applicator and effectively improved the efficiency of installation and setting.


Wu J.,Shanghai Tobacco Machinery Co. | Shi Z.,Shanghai Tobacco Machinery Co. | Chen Q.,Shanghai Tobacco Machinery Co.
Tobacco Science and Technology | Year: 2014

To improve the lubrication of the second pusher in YB618 carton/overwrap packer and prevent lubricant from leaking, by analyzing the kinetic characteristics of the mechanism, the second pusher was improved with a mechanism of straight reciprocating motion based on epicyclical gear train and a fully sealed lubrication system. According to the transmission ratio of gears and the stroke of the mechanism, the kinematics of the second pusher was analyzed, and the improvement effect was validated by a Pro/E simulation model at an angular velocity of 80 r/min. The results showed that: 1) The straight reciprocating motion of the pushing hand in the second pusher was able to push cigarette packets into packing drum at low production speed. 2) The movement of the mechanism followed a cosine curve, it improved the performance of the equipment. 3) After running for 1200 hours, no lubricant leak was found, the second pusher was effectively lubricated, and the equipment ran well. ©, 2014, Editorial Office of Tobacco Science and Technology. All right reserved.


Shi X.-Y.,Shanghai Tobacco Machinery Co.
Zhuzao/Foundry | Year: 2013

The influences of steel shot size, shooting time, and other factors on the surface roughness of iron castings were studied through orthogonal experiments. The results show that shooting time is the most significant factor for surface roughness, longer shooting time producing a better surface quality; smaller size of steel shot helps to get lower surface roughness, which is the second important factor; the velocity of steel shot contributes little to surface roughness. The shot blasting technology was optimized according to the experimental results.


Wu J.,Shanghai Tobacco Machinery Co. | Shi Z.,Shanghai Tobacco Machinery Co. | Ma W.,Shanghai Tobacco Machinery Co.
Tobacco Science and Technology | Year: 2015

To adapt YB618 carton overwrapper to American carton format and anticlockwise tear tape, the folding steps in YB618 overwrapper were modified after analyzing the existing folding procedures. The cam mechanisms were redesigned and side folders were modified. The movable folders were removed, two fixed folders were reserved to complete the folding of wide long flaps. Movable side folders were designed for folding the narrow side flaps, the rear flag folding action was no longer needed. The modification was tested by a Pro/E simulation model at 80 carton/min (800 packet/min), the results showed that: 1) The movement of two side folders satisfied design requirements, and completed the actions for narrow and wide flaps, and applicable to YB618 carton overwrapper for American carton format. 2) The curvature of center trajectories of Cam 2 and Cam 3 was continuous, which met the requirements of cam movement, and their corresponding minimum inside and outside curvature radii satisfied the structure requirements of cam rollers of 16 mm in radius. 3) The average effective running efficiency of modified overwrapper reached 88.09% with average noise level of 80.6 dB, the packaging quality met the requirements of standards, and the machine ran well. ©, 2015, Editorial Office of Tobacco Science and Technology. All right reserved.

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