Design and Research of Continuous High鄄speed Supply
Mechanism for Pasteboard of Carton Packaging Machine
ZHANG Youliang
1
,摇 SUN Jianhua
2
,摇 LI Lige
1
,摇 WANG Ligang
1
,摇 HAN Chen
1
,摇 BAI Bingyu
1
(1
. Light Industry Xi
爷
an Mechanical Research Institute
,
Xi
爷
an
710086,
China
;
2
. Horological Research Institute of Light Industry
,
Xi
爷
an
710061,
China
)
Abstract
: The pasteboard supply is one of the bottlenecks for carton packaging machine. To meet the de鄄
mand of pasteboard supply for carton packaging machine to achieve the production of 80 boxes per mi鄄
nute, this study provided a solution combined with vertical and horizontal conveying methods. The verti鄄
cal conveying technology was relatively mature and widely applied. In order to improve the speed of hori鄄
zontal conveying, we puts forward a resolution combined with the short鄄distance horizontal pasteboard
conveying mechanism and the double roller conveying mechanism so as to analyze the working and struc鄄
ture principle of all assembly units. Meanwhile, the rationality and practicality of this resolution were dis鄄
cussed and the speedy conveying was also achieved.
Key words
: carton packing machine; sucking pasteboard mechanism; delivery mechanism; innovative
design; double revolving delivery
(
责任编辑
:
檀彩莲
詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬詬
)
(
上接第
64
页
)
Extraction and Antioxidant Activity of Total Flavonoids
from Tartary Buckwheat Seed
LI Fei,摇 REN Qing
*
,摇 JI Chao,摇 HOU Chang
(
School of Food and Chemical Engineering
,
Beijing Technology and Business University
,
Beijing
100048,
China
)
Abstract
: Response surface methodology was used to optimize the extraction processing of the total fla鄄
vonoids in the seed of tartary buckwheat according to central composite design principle based on the sin鄄
gle factor experimental results. Through the analysis of cross鄄interaction among factors by the Design鄄
Expert software, the optimal extraction conditions were found to be liquid鄄material ratio 20 颐 1, alcohol
concentration 75% , extraction temperature 70 益, and extraction time 4h. The extraction rate of fla鄄
vonoids was 2郾 632% under the optimal extraction conditions. Meanwhile, the antioxidant activity of total
flavonoids was assessed by scavenging hydroxyl radicals and DPPH radical, anti鄄lipid peroxidation, and
reducing power. The results showed that the total flavonoids in the seed of tartary buckwheat presented a
strong antioxidant activity to scavenge DPPH radicals and IC
50
values of anti鄄lipid peroxidation, scavenge
hydroxyl radicals, and DPPH radical were 1郾 115, 0郾 498, and 2郾 235 滋g / mL.
Key words
: seed of tartary buckwheat; flavonoids; response surface methodology; antioxidant activity
(
责任编辑
:
檀彩莲
)
28
食品科学技术学报
摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇 摇
摇 2015
年
11
月
