| 摘要 |
PURPOSE: A vinyl wrapping apparatus is provided to keep an entrance part of a bag in an opened state in order to facilitate wrapping and charging of products in the bag. CONSTITUTION: A vinyl wrapping apparatus comprises a fixed link bracket (120a), a movable link bracket(120b), base brackets(120c), multiple link arms, a pneumatic cylinder(130), a connection gear, a compression grip(140a), a fixing grip(140b), a first suction pad, and a second suction pad. The fixed link bracket is installed on a frame. The movable link bracket is movable arranged opposite to the fixed link bracket. The base brackets are arranged in both sides of a space between the fixed link bracket and the movable link bracket. One end of the link arm is connected to the base bracket by a rotary shaft and the other end is connected to the fixed link bracket or the movable link bracket by the rotary shaft. The pneumatic cylinder allows the movable link bracket to move forth and back. When the link arms connected to the base brackets are rotated by moving the movable link bracket, the connection gear delivers rotary force to the link arms. The compression grip and the fixing grip are installed on the base bracket and are engaged each other to fix one end of a bag. The first and the second suction pads are respectively arranged opposite to the fixed link bracket and the movable link bracket to open an entrance of the bag.
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